Bump WoofWare.Whippet.Fantomas (#373)

This reverts commit 8d275f0047.

.config/dotnet-tools.json

@@ -3,13 +3,13 @@
   "isRoot": true,
   "tools": {
     "fantomas": {
-      "version": "6.3.15",
+      "version": "7.0.1",
       "commands": [
         "fantomas"
       ]
     },
     "fsharp-analyzers": {
-      "version": "0.27.0",
+      "version": "0.30.0",
       "commands": [
         "fsharp-analyzers"
       ]

.github/workflows/dotnet.yaml

@@ -29,7 +29,7 @@ jobs:
       with:
         fetch-depth: 0 # so that NerdBank.GitVersioning has access to history
     - name: Install Nix
-      uses: cachix/install-nix-action@V28
+      uses: cachix/install-nix-action@v31
       with:
         extra_nix_config: |
           access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}
@@ -50,7 +50,7 @@ jobs:
         with:
           fetch-depth: 0 # so that NerdBank.GitVersioning has access to history
       - name: Install Nix
-        uses: cachix/install-nix-action@V28
+        uses: cachix/install-nix-action@v31
         with:
           extra_nix_config: |
             access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}
@@ -67,7 +67,7 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v4
       - name: Install Nix
-        uses: cachix/install-nix-action@V28
+        uses: cachix/install-nix-action@v31
         with:
           extra_nix_config: |
             access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}
@@ -82,7 +82,7 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v4
       - name: Install Nix
-        uses: cachix/install-nix-action@V28
+        uses: cachix/install-nix-action@v31
         with:
           extra_nix_config: |
             access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}
@@ -97,7 +97,7 @@ jobs:
         with:
           fetch-depth: 0 # so that NerdBank.GitVersioning has access to history
       - name: Install Nix
-        uses: cachix/install-nix-action@V28
+        uses: cachix/install-nix-action@v31
         with:
           extra_nix_config: |
             access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}
@@ -116,7 +116,7 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v4
       - name: Install Nix
-        uses: cachix/install-nix-action@V28
+        uses: cachix/install-nix-action@v31
         with:
           extra_nix_config: |
             access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}
@@ -129,7 +129,7 @@ jobs:
     steps:
       - uses: actions/checkout@master
       - name: Install Nix
-        uses: cachix/install-nix-action@V28
+        uses: cachix/install-nix-action@v31
         with:
           extra_nix_config: |
             access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}
@@ -142,7 +142,7 @@ jobs:
     steps:
       - uses: actions/checkout@master
       - name: Install Nix
-        uses: cachix/install-nix-action@V28
+        uses: cachix/install-nix-action@v31
         with:
           extra_nix_config: |
             access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}
@@ -156,7 +156,7 @@ jobs:
       with:
         fetch-depth: 0 # so that NerdBank.GitVersioning has access to history
     - name: Install Nix
-      uses: cachix/install-nix-action@V28
+      uses: cachix/install-nix-action@v31
       with:
         extra_nix_config: |
           access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}
@@ -198,27 +198,40 @@ jobs:
         # Verify that there is exactly one nupkg in the artifact that would be NuGet published
         run: if [[ $(find packed-attribute -maxdepth 1 -name 'WoofWare.Myriad.Plugins.Attributes.*.nupkg' -printf c | wc -c) -ne "1" ]]; then exit 1; fi
 
-  github-release-plugin-dry-run:
-    needs: [nuget-pack]
+  github-release-dry-run:
+    strategy:
+      matrix:
+        artifact:
+        - nuget-package-plugin
+        - nuget-package-attribute
     runs-on: ubuntu-latest
+    needs: [nuget-pack]
     steps:
       - uses: actions/checkout@v4
-      - name: Download NuGet artifact (plugin)
+      - name: Download NuGet artifact
         uses: actions/download-artifact@v4
         with:
-          name: nuget-package-plugin
-      - name: Download NuGet artifact (attribute)
-        uses: actions/download-artifact@v4
-        with:
-          name: nuget-package-attribute
-      - name: Tag and release plugin
+          name: ${{ matrix.artifact }}
+      - name: Compute package path
+        id: compute-path
+        run: |
+          find . -maxdepth 1 -type f -name 'WoofWare.Myriad.*.nupkg' -exec sh -c 'echo "output=$(basename "$1")" >> $GITHUB_OUTPUT' shell {} \;
+      - name: Compute tag name
+        id: compute-tag
         env:
-          DRY_RUN: 1
-          GITHUB_TOKEN: mock-token
-        run: sh .github/workflows/tag.sh
+          NUPKG_PATH: ${{ steps.compute-path.outputs.output }}
+        run: echo "output=$(basename "$NUPKG_PATH" .nupkg)" >> $GITHUB_OUTPUT
+      - name: Tag and release
+        uses: G-Research/common-actions/github-release@19d7281a0f9f83e13c78f99a610dbc80fc59ba3b
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          target-commitish: ${{ github.sha }}
+          tag: ${{ steps.compute-tag.outputs.output }}
+          binary-contents: ${{ steps.compute-path.outputs.output }}
+          dry-run: true
 
   all-required-checks-complete:
-    needs: [check-dotnet-format, check-nix-format, check-accurate-generations, build, build-nix, linkcheck, flake-check, analyzers, nuget-pack, expected-pack, github-release-plugin-dry-run]
+    needs: [check-dotnet-format, check-nix-format, check-accurate-generations, build, build-nix, linkcheck, flake-check, analyzers, nuget-pack, expected-pack, github-release-dry-run]
     if: ${{ always() }}
     runs-on: ubuntu-latest
     steps:
@@ -241,7 +254,7 @@ jobs:
           name: nuget-package-attribute
           path: packed
       - name: Attest Build Provenance
-        uses: actions/attest-build-provenance@1c608d11d69870c2092266b3f9a6f3abbf17002c # v1.4.3
+        uses: actions/attest-build-provenance@c074443f1aee8d4aeeae555aebba3282517141b2 # v2.2.3
         with:
           subject-path: "packed/*.nupkg"
 
@@ -260,7 +273,7 @@ jobs:
           name: nuget-package-plugin
           path: packed
       - name: Attest Build Provenance
-        uses: actions/attest-build-provenance@1c608d11d69870c2092266b3f9a6f3abbf17002c # v1.4.3
+        uses: actions/attest-build-provenance@c074443f1aee8d4aeeae555aebba3282517141b2 # v2.2.3
         with:
           subject-path: "packed/*.nupkg"
 
@@ -276,7 +289,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - name: Install Nix
-        uses: cachix/install-nix-action@V28
+        uses: cachix/install-nix-action@v31
         with:
           extra_nix_config: |
             access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}
@@ -309,7 +322,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - name: Install Nix
-        uses: cachix/install-nix-action@V28
+        uses: cachix/install-nix-action@v31
         with:
           extra_nix_config: |
             access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}
@@ -330,7 +343,12 @@ jobs:
           nupkg-dir: packed/
           dotnet: ${{ steps.dotnet-identify.outputs.dotnet }}
 
-  github-release-plugin:
+  github-release:
+    strategy:
+      matrix:
+        artifact:
+        - nuget-package-attribute
+        - nuget-package-plugin
     runs-on: ubuntu-latest
     if: ${{ !github.event.repository.fork && github.ref == 'refs/heads/main' }}
     needs: [all-required-checks-complete]
@@ -339,15 +357,23 @@ jobs:
       contents: write
     steps:
       - uses: actions/checkout@v4
-      - name: Download NuGet artifact (plugin)
+      - name: Download NuGet artifact
         uses: actions/download-artifact@v4
         with:
-          name: nuget-package-plugin
-      - name: Download NuGet artifact (attribute)
-        uses: actions/download-artifact@v4
-        with:
-          name: nuget-package-attribute
-      - name: Tag and release plugin
+          name: ${{ matrix.artifact }}
+      - name: Compute package path
+        id: compute-path
+        run: |
+          find . -maxdepth 1 -type f -name 'WoofWare.Myriad.*.nupkg' -exec sh -c 'echo "output=$(basename "$1")" >> $GITHUB_OUTPUT' shell {} \;
+      - name: Compute tag name
+        id: compute-tag
         env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-        run: sh .github/workflows/tag.sh
+          NUPKG_PATH: ${{ steps.compute-path.outputs.output }}
+        run: echo "output=$(basename "$NUPKG_PATH" .nupkg)" >> $GITHUB_OUTPUT
+      - name: Tag and release
+        uses: G-Research/common-actions/github-release@19d7281a0f9f83e13c78f99a610dbc80fc59ba3b
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          target-commitish: ${{ github.sha }}
+          tag: ${{ steps.compute-tag.outputs.output }}
+          binary-contents: ${{ steps.compute-path.outputs.output }}

.github/workflows/flake_update.yaml

@@ -21,21 +21,20 @@ jobs:
       - name: Update Nix flake
         run: 'nix flake update'
 
-      - name: Build passthru
-        run: 'nix build ".#default.passthru.fetch-deps"'
+      - name: Build fetch-deps
+        run: 'nix build ".#default.fetch-deps"'
 
-      - name: Run passthru
+      - name: Run fetch-deps
         run: |
             set -o pipefail
-            ./result | tee /tmp/passthru.txt
-            cp /"$(cat /tmp/passthru.txt | grep " wrote lockfile to " | cut -d / -f 2-)" nix/deps.nix
+            ./result nix/deps.json
 
       - name: Format
         run: 'nix develop --command alejandra .'
 
       - name: Create token
         id: generate-token
-        uses: actions/create-github-app-token@v1
+        uses: actions/create-github-app-token@v2
         with:
           # https://github.com/actions/create-github-app-token/issues/136
           app-id: ${{ secrets.APP_ID }}

.github/workflows/tag.sh

@@ -1,120 +0,0 @@
-#!/bin/bash
-
-echo "Dry-run? $DRY_RUN!"
-
-find . -maxdepth 1 -type f ! -name "$(printf "*\n*")" -name '*.nupkg' | while IFS= read -r file
-do
-    tag=$(basename "$file" .nupkg)
-    git tag "$tag"
-    ${DRY_RUN:+echo} git push origin "$tag"
-done
-
-export TAG
-TAG=$(find . -maxdepth 1 -type f -name 'WoofWare.Myriad.Plugins.*.nupkg' -exec sh -c 'basename "$1" .nupkg' shell {} \; | grep -v Attributes)
-
-case "$TAG" in
-  *"
-"*)
-    echo "Error: TAG contains a newline; multiple plugins found."
-    exit 1
-    ;;
-esac
-
-# target_commitish empty indicates the repo default branch
-curl_body='{"tag_name":"'"$TAG"'","target_commitish":"","name":"'"$TAG"'","draft":false,"prerelease":false,"generate_release_notes":false}'
-
-echo "cURL body: $curl_body"
-
-failed_output=$(cat <<'EOF'
-{
-  "message": "Validation Failed",
-  "errors": [
-    {
-      "resource": "Release",
-      "code": "already_exists",
-      "field": "tag_name"
-    }
-  ],
-  "documentation_url": "https://docs.github.com/rest/releases/releases#create-a-release"
-}
-EOF
-)
-
-success_output=$(cat <<'EOF'
-{
-  "url": "https://api.github.com/repos/Smaug123/WoofWare.Myriad/releases/158152116",
-  "assets_url": "https://api.github.com/repos/Smaug123/WoofWare.Myriad/releases/158152116/assets",
-  "upload_url": "https://uploads.github.com/repos/Smaug123/WoofWare.Myriad/releases/158152116/assets{?name,label}",
-  "html_url": "https://github.com/Smaug123/WoofWare.Myriad/releases/tag/WoofWare.Myriad.Plugins.2.1.30",
-  "id": 158152116,
-  "author": {
-    "login": "github-actions[bot]",
-    "id": 41898282,
-    "node_id": "MDM6Qm90NDE4OTgyODI=",
-    "avatar_url": "https://avatars.githubusercontent.com/in/15368?v=4",
-    "gravatar_id": "",
-    "url": "https://api.github.com/users/github-actions%5Bbot%5D",
-    "html_url": "https://github.com/apps/github-actions",
-    "followers_url": "https://api.github.com/users/github-actions%5Bbot%5D/followers",
-    "following_url": "https://api.github.com/users/github-actions%5Bbot%5D/following{/other_user}",
-    "gists_url": "https://api.github.com/users/github-actions%5Bbot%5D/gists{/gist_id}",
-    "starred_url": "https://api.github.com/users/github-actions%5Bbot%5D/starred{/owner}{/repo}",
-    "subscriptions_url": "https://api.github.com/users/github-actions%5Bbot%5D/subscriptions",
-    "organizations_url": "https://api.github.com/users/github-actions%5Bbot%5D/orgs",
-    "repos_url": "https://api.github.com/users/github-actions%5Bbot%5D/repos",
-    "events_url": "https://api.github.com/users/github-actions%5Bbot%5D/events{/privacy}",
-    "received_events_url": "https://api.github.com/users/github-actions%5Bbot%5D/received_events",
-    "type": "Bot",
-    "site_admin": false
-  },
-  "node_id": "RE_kwDOJfksgc4JbTW0",
-  "tag_name": "WoofWare.Myriad.Plugins.2.1.30",
-  "target_commitish": "main",
-  "name": "WoofWare.Myriad.Plugins.2.1.30",
-  "draft": false,
-  "prerelease": false,
-  "created_at": "2024-05-30T11:00:55Z",
-  "published_at": "2024-05-30T11:03:02Z",
-  "assets": [
-
-  ],
-  "tarball_url": "https://api.github.com/repos/Smaug123/WoofWare.Myriad/tarball/WoofWare.Myriad.Plugins.2.1.30",
-  "zipball_url": "https://api.github.com/repos/Smaug123/WoofWare.Myriad/zipball/WoofWare.Myriad.Plugins.2.1.30",
-  "body": null
-}
-EOF
-)
-
-HANDLE_OUTPUT=''
-handle_error() {
-    ERROR_OUTPUT="$1"
-    exit_message=$(echo "$ERROR_OUTPUT" | jq -r --exit-status 'if .errors | length == 1 then .errors[0].code else null end')
-    if [ "$exit_message" = "already_exists" ] ; then
-        HANDLE_OUTPUT="Did not create GitHub release because it already exists at this version."
-    else
-        echo "Unexpected error output from curl: $(cat curl_output.json)"
-        echo "JQ output: $(exit_message)"
-        exit 2
-    fi
-}
-
-run_tests() {
-    handle_error "$failed_output"
-    if [ "$HANDLE_OUTPUT" != "Did not create GitHub release because it already exists at this version." ]; then
-        echo "Bad output from handler: $HANDLE_OUTPUT"
-        exit 3
-    fi
-    HANDLE_OUTPUT=''
-    echo "Tests passed."
-}
-
-run_tests
-
-if [ "$DRY_RUN" != 1 ] ; then
-    if curl --fail-with-body -L -X POST -H "Accept: application/vnd.github+json" -H "Authorization: Bearer $GITHUB_TOKEN" -H "X-GitHub-Api-Version: 2022-11-28" https://api.github.com/repos/Smaug123/WoofWare.Myriad/releases -d "$curl_body" > curl_output.json; then
-        echo "Curl succeeded."
-    else
-        handle_error "$(cat curl_output.json)"
-        echo "$HANDLE_OUTPUT"
-    fi
-fi

CHANGELOG.md

@@ -1,5 +1,27 @@
 Notable changes are recorded here.
 
+# WoofWare.Myriad.Plugins 7.0.1
+
+All generators should now be compatible with `<Nullable>enable</Nullable>`.
+
+**Please test the results and let me know of unexpected failures.**
+There are a number of heuristics in this code, because:
+
+* `System.Text.Json.Nodes` is an unfathomably weird API which simply requires us to make educated guesses about whether a user-provided type is supposed to be nullable, despite this being irrelevant to the operation of `System.Text.Json`;
+* Some types (like `Uri` and `String`) have `ToString` methods which can't return `null`, but in general `Object.ToString` can of course return `null`, and as far as I can tell there is simply no way to know from the source alone whether a given type will have a nullable `ToString`.
+
+# WoofWare.Myriad.Plugins 6.0.1
+
+The `ArgParser` generator's type signatures have changed.
+The `parse'` method no longer takes `getEnvironmentVariable : string -> string`; it's now `getEnvironmentVariable : string -> string option`.
+This is to permit satisfying the `<Nullable>enable</Nullable>` compiler setting.
+If you're calling `parse'`, give it `Environment.GetEnvironmentVariable >> Option.ofObj` instead.
+
+# WoofWare.Myriad.Plugins 5.0.1
+
+We now enforce non-nullability on more types during JSON parse.
+We have always expected you to consume nullable types wrapped in an `option`, but now we enforce this in more cases by throwing `ArgumentNullException`.
+
 # WoofWare.Myriad.Plugins 3.0.1
 
 Semantics of `HttpClient`'s URI component composition changed:

ConsumePlugin/ConsumePlugin.fsproj

@@ -1,9 +1,10 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>net8.0</TargetFramework>
+    <TargetFramework>net9.0</TargetFramework>
     <IsPackable>false</IsPackable>
     <OtherFlags>--reflectionfree $(OtherFlags)</OtherFlags>
+    <Nullable>enable</Nullable>
   </PropertyGroup>
   <ItemGroup>
     <MyriadSdkGenerator Include="$(MSBuildThisFileDirectory)..\WoofWare.Myriad.Plugins\bin\$(Configuration)\net6.0\WoofWare.Myriad.Plugins.dll"/>
@@ -32,6 +33,20 @@
     <Compile Include="GeneratedMock.fs">
       <MyriadFile>MockExample.fs</MyriadFile>
     </Compile>
+    <Compile Include="MockExampleNoAttributes.fs" />
+    <Compile Include="GeneratedMockNoAttributes.fs">
+      <MyriadFile>MockExampleNoAttributes.fs</MyriadFile>
+      <MyriadParams>
+        <IPublicTypeNoAttr>GenerateMock</IPublicTypeNoAttr>
+        <IPublicTypeInternalFalseNoAttr>GenerateMock(false)</IPublicTypeInternalFalseNoAttr>
+        <InternalTypeNoAttr>GenerateMock</InternalTypeNoAttr>
+        <PrivateTypeNoAttr>GenerateMock</PrivateTypeNoAttr>
+        <PrivateTypeInternalFalseNoAttr>GenerateMock(false)</PrivateTypeInternalFalseNoAttr>
+        <VeryPublicTypeNoAttr>GenerateMock</VeryPublicTypeNoAttr>
+        <CurriedNoAttr>GenerateMock</CurriedNoAttr>
+        <TypeWithInterfaceNoAttr>GenerateMock</TypeWithInterfaceNoAttr>
+      </MyriadParams>
+    </Compile>
     <Compile Include="Vault.fs" />
     <Compile Include="GeneratedVault.fs">
       <MyriadFile>Vault.fs</MyriadFile>

ConsumePlugin/GeneratedArgs.fs

@@ -23,7 +23,7 @@ module BasicNoPositionals =
         /// Waiting to receive a value for the key we've already consumed
         | AwaitingValue of key : string
 
-    let parse' (getEnvironmentVariable : string -> string) (args : string list) : BasicNoPositionals =
+    let parse' (getEnvironmentVariable : string -> string option) (args : string list) : BasicNoPositionals =
         let ArgParser_errors = ResizeArray ()
 
         let helpText () =
@@ -223,7 +223,7 @@ module BasicNoPositionals =
             ArgParser_errors |> String.concat "\n" |> failwithf "Errors during parse!\n%s"
 
     let parse (args : string list) : BasicNoPositionals =
-        parse' System.Environment.GetEnvironmentVariable args
+        parse' (System.Environment.GetEnvironmentVariable >> Option.ofObj) args
 namespace ConsumePlugin
 
 open System
@@ -239,7 +239,7 @@ module Basic =
         /// Waiting to receive a value for the key we've already consumed
         | AwaitingValue of key : string
 
-    let parse' (getEnvironmentVariable : string -> string) (args : string list) : Basic =
+    let parse' (getEnvironmentVariable : string -> string option) (args : string list) : Basic =
         let ArgParser_errors = ResizeArray ()
 
         let helpText () =
@@ -430,7 +430,7 @@ module Basic =
             ArgParser_errors |> String.concat "\n" |> failwithf "Errors during parse!\n%s"
 
     let parse (args : string list) : Basic =
-        parse' System.Environment.GetEnvironmentVariable args
+        parse' (System.Environment.GetEnvironmentVariable >> Option.ofObj) args
 namespace ConsumePlugin
 
 open System
@@ -446,7 +446,7 @@ module BasicWithIntPositionals =
         /// Waiting to receive a value for the key we've already consumed
         | AwaitingValue of key : string
 
-    let parse' (getEnvironmentVariable : string -> string) (args : string list) : BasicWithIntPositionals =
+    let parse' (getEnvironmentVariable : string -> string option) (args : string list) : BasicWithIntPositionals =
         let ArgParser_errors = ResizeArray ()
 
         let helpText () =
@@ -633,7 +633,7 @@ module BasicWithIntPositionals =
             ArgParser_errors |> String.concat "\n" |> failwithf "Errors during parse!\n%s"
 
     let parse (args : string list) : BasicWithIntPositionals =
-        parse' System.Environment.GetEnvironmentVariable args
+        parse' (System.Environment.GetEnvironmentVariable >> Option.ofObj) args
 namespace ConsumePlugin
 
 open System
@@ -649,7 +649,7 @@ module LoadsOfTypes =
         /// Waiting to receive a value for the key we've already consumed
         | AwaitingValue of key : string
 
-    let parse' (getEnvironmentVariable : string -> string) (args : string list) : LoadsOfTypes =
+    let parse' (getEnvironmentVariable : string -> string option) (args : string list) : LoadsOfTypes =
         let ArgParser_errors = ResizeArray ()
 
         let helpText () =
@@ -1038,7 +1038,7 @@ module LoadsOfTypes =
             match arg_10 with
             | None ->
                 match "CONSUMEPLUGIN_THINGS" |> getEnvironmentVariable with
-                | null ->
+                | None ->
                     sprintf
                         "No value was supplied for %s, nor was environment variable %s set"
                         (sprintf "--%s" "yet-another-optional-thing")
@@ -1046,7 +1046,7 @@ module LoadsOfTypes =
                     |> ArgParser_errors.Add
 
                     Unchecked.defaultof<_>
-                | x -> x |> (fun x -> x)
+                | Some x -> x |> (fun x -> x)
                 |> Choice2Of2
             | Some x -> Choice1Of2 x
 
@@ -1068,7 +1068,7 @@ module LoadsOfTypes =
             ArgParser_errors |> String.concat "\n" |> failwithf "Errors during parse!\n%s"
 
     let parse (args : string list) : LoadsOfTypes =
-        parse' System.Environment.GetEnvironmentVariable args
+        parse' (System.Environment.GetEnvironmentVariable >> Option.ofObj) args
 namespace ConsumePlugin
 
 open System
@@ -1084,7 +1084,7 @@ module LoadsOfTypesNoPositionals =
         /// Waiting to receive a value for the key we've already consumed
         | AwaitingValue of key : string
 
-    let parse' (getEnvironmentVariable : string -> string) (args : string list) : LoadsOfTypesNoPositionals =
+    let parse' (getEnvironmentVariable : string -> string option) (args : string list) : LoadsOfTypesNoPositionals =
         let ArgParser_errors = ResizeArray ()
 
         let helpText () =
@@ -1476,7 +1476,7 @@ module LoadsOfTypesNoPositionals =
             match arg_9 with
             | None ->
                 match "CONSUMEPLUGIN_THINGS" |> getEnvironmentVariable with
-                | null ->
+                | None ->
                     sprintf
                         "No value was supplied for %s, nor was environment variable %s set"
                         (sprintf "--%s" "yet-another-optional-thing")
@@ -1484,7 +1484,7 @@ module LoadsOfTypesNoPositionals =
                     |> ArgParser_errors.Add
 
                     Unchecked.defaultof<_>
-                | x -> x |> (fun x -> x)
+                | Some x -> x |> (fun x -> x)
                 |> Choice2Of2
             | Some x -> Choice1Of2 x
 
@@ -1505,7 +1505,7 @@ module LoadsOfTypesNoPositionals =
             ArgParser_errors |> String.concat "\n" |> failwithf "Errors during parse!\n%s"
 
     let parse (args : string list) : LoadsOfTypesNoPositionals =
-        parse' System.Environment.GetEnvironmentVariable args
+        parse' (System.Environment.GetEnvironmentVariable >> Option.ofObj) args
 namespace ConsumePlugin
 
 open System
@@ -1524,7 +1524,7 @@ module DatesAndTimesArgParse =
     /// Extension methods for argument parsing
     type DatesAndTimes with
 
-        static member parse' (getEnvironmentVariable : string -> string) (args : string list) : DatesAndTimes =
+        static member parse' (getEnvironmentVariable : string -> string option) (args : string list) : DatesAndTimes =
             let ArgParser_errors = ResizeArray ()
 
             let helpText () =
@@ -1787,7 +1787,7 @@ module DatesAndTimesArgParse =
                 ArgParser_errors |> String.concat "\n" |> failwithf "Errors during parse!\n%s"
 
         static member parse (args : string list) : DatesAndTimes =
-            DatesAndTimes.parse' System.Environment.GetEnvironmentVariable args
+            DatesAndTimes.parse' (System.Environment.GetEnvironmentVariable >> Option.ofObj) args
 namespace ConsumePlugin
 
 open System
@@ -1806,7 +1806,7 @@ module ParentRecordArgParse =
     /// Extension methods for argument parsing
     type ParentRecord with
 
-        static member parse' (getEnvironmentVariable : string -> string) (args : string list) : ParentRecord =
+        static member parse' (getEnvironmentVariable : string -> string option) (args : string list) : ParentRecord =
             let ArgParser_errors = ResizeArray ()
 
             let helpText () =
@@ -2016,7 +2016,7 @@ module ParentRecordArgParse =
                 ArgParser_errors |> String.concat "\n" |> failwithf "Errors during parse!\n%s"
 
         static member parse (args : string list) : ParentRecord =
-            ParentRecord.parse' System.Environment.GetEnvironmentVariable args
+            ParentRecord.parse' (System.Environment.GetEnvironmentVariable >> Option.ofObj) args
 namespace ConsumePlugin
 
 open System
@@ -2035,7 +2035,11 @@ module ParentRecordChildPosArgParse =
     /// Extension methods for argument parsing
     type ParentRecordChildPos with
 
-        static member parse' (getEnvironmentVariable : string -> string) (args : string list) : ParentRecordChildPos =
+        static member parse'
+            (getEnvironmentVariable : string -> string option)
+            (args : string list)
+            : ParentRecordChildPos
+            =
             let ArgParser_errors = ResizeArray ()
 
             let helpText () =
@@ -2209,7 +2213,7 @@ module ParentRecordChildPosArgParse =
                 ArgParser_errors |> String.concat "\n" |> failwithf "Errors during parse!\n%s"
 
         static member parse (args : string list) : ParentRecordChildPos =
-            ParentRecordChildPos.parse' System.Environment.GetEnvironmentVariable args
+            ParentRecordChildPos.parse' (System.Environment.GetEnvironmentVariable >> Option.ofObj) args
 namespace ConsumePlugin
 
 open System
@@ -2228,7 +2232,11 @@ module ParentRecordSelfPosArgParse =
     /// Extension methods for argument parsing
     type ParentRecordSelfPos with
 
-        static member parse' (getEnvironmentVariable : string -> string) (args : string list) : ParentRecordSelfPos =
+        static member parse'
+            (getEnvironmentVariable : string -> string option)
+            (args : string list)
+            : ParentRecordSelfPos
+            =
             let ArgParser_errors = ResizeArray ()
 
             let helpText () =
@@ -2388,7 +2396,7 @@ module ParentRecordSelfPosArgParse =
                 ArgParser_errors |> String.concat "\n" |> failwithf "Errors during parse!\n%s"
 
         static member parse (args : string list) : ParentRecordSelfPos =
-            ParentRecordSelfPos.parse' System.Environment.GetEnvironmentVariable args
+            ParentRecordSelfPos.parse' (System.Environment.GetEnvironmentVariable >> Option.ofObj) args
 namespace ConsumePlugin
 
 open System
@@ -2407,7 +2415,11 @@ module ChoicePositionalsArgParse =
     /// Extension methods for argument parsing
     type ChoicePositionals with
 
-        static member parse' (getEnvironmentVariable : string -> string) (args : string list) : ChoicePositionals =
+        static member parse'
+            (getEnvironmentVariable : string -> string option)
+            (args : string list)
+            : ChoicePositionals
+            =
             let ArgParser_errors = ResizeArray ()
 
             let helpText () =
@@ -2502,7 +2514,7 @@ module ChoicePositionalsArgParse =
                 ArgParser_errors |> String.concat "\n" |> failwithf "Errors during parse!\n%s"
 
         static member parse (args : string list) : ChoicePositionals =
-            ChoicePositionals.parse' System.Environment.GetEnvironmentVariable args
+            ChoicePositionals.parse' (System.Environment.GetEnvironmentVariable >> Option.ofObj) args
 namespace ConsumePlugin
 
 open System
@@ -2521,7 +2533,11 @@ module ContainsBoolEnvVarArgParse =
     /// Extension methods for argument parsing
     type ContainsBoolEnvVar with
 
-        static member parse' (getEnvironmentVariable : string -> string) (args : string list) : ContainsBoolEnvVar =
+        static member parse'
+            (getEnvironmentVariable : string -> string option)
+            (args : string list)
+            : ContainsBoolEnvVar
+            =
             let ArgParser_errors = ResizeArray ()
 
             let helpText () =
@@ -2653,7 +2669,7 @@ module ContainsBoolEnvVarArgParse =
                 match arg_0 with
                 | None ->
                     match "CONSUMEPLUGIN_THINGS" |> getEnvironmentVariable with
-                    | null ->
+                    | None ->
                         sprintf
                             "No value was supplied for %s, nor was environment variable %s set"
                             (sprintf "--%s" "bool-var")
@@ -2661,7 +2677,7 @@ module ContainsBoolEnvVarArgParse =
                         |> ArgParser_errors.Add
 
                         Unchecked.defaultof<_>
-                    | x ->
+                    | Some x ->
                         if System.String.Equals (x, "1", System.StringComparison.OrdinalIgnoreCase) then
                             true
                         else if System.String.Equals (x, "0", System.StringComparison.OrdinalIgnoreCase) then
@@ -2679,7 +2695,7 @@ module ContainsBoolEnvVarArgParse =
                 ArgParser_errors |> String.concat "\n" |> failwithf "Errors during parse!\n%s"
 
         static member parse (args : string list) : ContainsBoolEnvVar =
-            ContainsBoolEnvVar.parse' System.Environment.GetEnvironmentVariable args
+            ContainsBoolEnvVar.parse' (System.Environment.GetEnvironmentVariable >> Option.ofObj) args
 namespace ConsumePlugin
 
 open System
@@ -2698,7 +2714,7 @@ module WithFlagDuArgParse =
     /// Extension methods for argument parsing
     type WithFlagDu with
 
-        static member parse' (getEnvironmentVariable : string -> string) (args : string list) : WithFlagDu =
+        static member parse' (getEnvironmentVariable : string -> string option) (args : string list) : WithFlagDu =
             let ArgParser_errors = ResizeArray ()
 
             let helpText () =
@@ -2852,7 +2868,7 @@ module WithFlagDuArgParse =
                 ArgParser_errors |> String.concat "\n" |> failwithf "Errors during parse!\n%s"
 
         static member parse (args : string list) : WithFlagDu =
-            WithFlagDu.parse' System.Environment.GetEnvironmentVariable args
+            WithFlagDu.parse' (System.Environment.GetEnvironmentVariable >> Option.ofObj) args
 namespace ConsumePlugin
 
 open System
@@ -2871,7 +2887,11 @@ module ContainsFlagEnvVarArgParse =
     /// Extension methods for argument parsing
     type ContainsFlagEnvVar with
 
-        static member parse' (getEnvironmentVariable : string -> string) (args : string list) : ContainsFlagEnvVar =
+        static member parse'
+            (getEnvironmentVariable : string -> string option)
+            (args : string list)
+            : ContainsFlagEnvVar
+            =
             let ArgParser_errors = ResizeArray ()
 
             let helpText () =
@@ -3018,7 +3038,7 @@ module ContainsFlagEnvVarArgParse =
                 match arg_0 with
                 | None ->
                     match "CONSUMEPLUGIN_THINGS" |> getEnvironmentVariable with
-                    | null ->
+                    | None ->
                         sprintf
                             "No value was supplied for %s, nor was environment variable %s set"
                             (sprintf "--%s" "dry-run")
@@ -3026,7 +3046,7 @@ module ContainsFlagEnvVarArgParse =
                         |> ArgParser_errors.Add
 
                         Unchecked.defaultof<_>
-                    | x ->
+                    | Some x ->
                         if System.String.Equals (x, "1", System.StringComparison.OrdinalIgnoreCase) then
                             if true = Consts.FALSE then
                                 DryRunMode.Wet
@@ -3056,7 +3076,7 @@ module ContainsFlagEnvVarArgParse =
                 ArgParser_errors |> String.concat "\n" |> failwithf "Errors during parse!\n%s"
 
         static member parse (args : string list) : ContainsFlagEnvVar =
-            ContainsFlagEnvVar.parse' System.Environment.GetEnvironmentVariable args
+            ContainsFlagEnvVar.parse' (System.Environment.GetEnvironmentVariable >> Option.ofObj) args
 namespace ConsumePlugin
 
 open System
@@ -3076,7 +3096,7 @@ module ContainsFlagDefaultValueArgParse =
     type ContainsFlagDefaultValue with
 
         static member parse'
-            (getEnvironmentVariable : string -> string)
+            (getEnvironmentVariable : string -> string option)
             (args : string list)
             : ContainsFlagDefaultValue
             =
@@ -3239,7 +3259,7 @@ module ContainsFlagDefaultValueArgParse =
                 ArgParser_errors |> String.concat "\n" |> failwithf "Errors during parse!\n%s"
 
         static member parse (args : string list) : ContainsFlagDefaultValue =
-            ContainsFlagDefaultValue.parse' System.Environment.GetEnvironmentVariable args
+            ContainsFlagDefaultValue.parse' (System.Environment.GetEnvironmentVariable >> Option.ofObj) args
 namespace ConsumePlugin
 
 open System
@@ -3258,7 +3278,7 @@ module ManyLongFormsArgParse =
     /// Extension methods for argument parsing
     type ManyLongForms with
 
-        static member parse' (getEnvironmentVariable : string -> string) (args : string list) : ManyLongForms =
+        static member parse' (getEnvironmentVariable : string -> string option) (args : string list) : ManyLongForms =
             let ArgParser_errors = ResizeArray ()
 
             let helpText () =
@@ -3504,7 +3524,7 @@ module ManyLongFormsArgParse =
                 ArgParser_errors |> String.concat "\n" |> failwithf "Errors during parse!\n%s"
 
         static member parse (args : string list) : ManyLongForms =
-            ManyLongForms.parse' System.Environment.GetEnvironmentVariable args
+            ManyLongForms.parse' (System.Environment.GetEnvironmentVariable >> Option.ofObj) args
 namespace ConsumePlugin
 
 open System
@@ -3524,7 +3544,7 @@ module FlagsIntoPositionalArgsArgParse =
     type FlagsIntoPositionalArgs with
 
         static member parse'
-            (getEnvironmentVariable : string -> string)
+            (getEnvironmentVariable : string -> string option)
             (args : string list)
             : FlagsIntoPositionalArgs
             =
@@ -3668,7 +3688,7 @@ module FlagsIntoPositionalArgsArgParse =
                 ArgParser_errors |> String.concat "\n" |> failwithf "Errors during parse!\n%s"
 
         static member parse (args : string list) : FlagsIntoPositionalArgs =
-            FlagsIntoPositionalArgs.parse' System.Environment.GetEnvironmentVariable args
+            FlagsIntoPositionalArgs.parse' (System.Environment.GetEnvironmentVariable >> Option.ofObj) args
 namespace ConsumePlugin
 
 open System
@@ -3688,7 +3708,7 @@ module FlagsIntoPositionalArgsChoiceArgParse =
     type FlagsIntoPositionalArgsChoice with
 
         static member parse'
-            (getEnvironmentVariable : string -> string)
+            (getEnvironmentVariable : string -> string option)
             (args : string list)
             : FlagsIntoPositionalArgsChoice
             =
@@ -3832,7 +3852,7 @@ module FlagsIntoPositionalArgsChoiceArgParse =
                 ArgParser_errors |> String.concat "\n" |> failwithf "Errors during parse!\n%s"
 
         static member parse (args : string list) : FlagsIntoPositionalArgsChoice =
-            FlagsIntoPositionalArgsChoice.parse' System.Environment.GetEnvironmentVariable args
+            FlagsIntoPositionalArgsChoice.parse' (System.Environment.GetEnvironmentVariable >> Option.ofObj) args
 namespace ConsumePlugin
 
 open System
@@ -3852,7 +3872,7 @@ module FlagsIntoPositionalArgsIntArgParse =
     type FlagsIntoPositionalArgsInt with
 
         static member parse'
-            (getEnvironmentVariable : string -> string)
+            (getEnvironmentVariable : string -> string option)
             (args : string list)
             : FlagsIntoPositionalArgsInt
             =
@@ -3996,7 +4016,7 @@ module FlagsIntoPositionalArgsIntArgParse =
                 ArgParser_errors |> String.concat "\n" |> failwithf "Errors during parse!\n%s"
 
         static member parse (args : string list) : FlagsIntoPositionalArgsInt =
-            FlagsIntoPositionalArgsInt.parse' System.Environment.GetEnvironmentVariable args
+            FlagsIntoPositionalArgsInt.parse' (System.Environment.GetEnvironmentVariable >> Option.ofObj) args
 namespace ConsumePlugin
 
 open System
@@ -4016,7 +4036,7 @@ module FlagsIntoPositionalArgsIntChoiceArgParse =
     type FlagsIntoPositionalArgsIntChoice with
 
         static member parse'
-            (getEnvironmentVariable : string -> string)
+            (getEnvironmentVariable : string -> string option)
             (args : string list)
             : FlagsIntoPositionalArgsIntChoice
             =
@@ -4160,7 +4180,7 @@ module FlagsIntoPositionalArgsIntChoiceArgParse =
                 ArgParser_errors |> String.concat "\n" |> failwithf "Errors during parse!\n%s"
 
         static member parse (args : string list) : FlagsIntoPositionalArgsIntChoice =
-            FlagsIntoPositionalArgsIntChoice.parse' System.Environment.GetEnvironmentVariable args
+            FlagsIntoPositionalArgsIntChoice.parse' (System.Environment.GetEnvironmentVariable >> Option.ofObj) args
 namespace ConsumePlugin
 
 open System
@@ -4180,7 +4200,7 @@ module FlagsIntoPositionalArgs'ArgParse =
     type FlagsIntoPositionalArgs' with
 
         static member parse'
-            (getEnvironmentVariable : string -> string)
+            (getEnvironmentVariable : string -> string option)
             (args : string list)
             : FlagsIntoPositionalArgs'
             =
@@ -4324,4 +4344,4 @@ module FlagsIntoPositionalArgs'ArgParse =
                 ArgParser_errors |> String.concat "\n" |> failwithf "Errors during parse!\n%s"
 
         static member parse (args : string list) : FlagsIntoPositionalArgs' =
-            FlagsIntoPositionalArgs'.parse' System.Environment.GetEnvironmentVariable args
+            FlagsIntoPositionalArgs'.parse' (System.Environment.GetEnvironmentVariable >> Option.ofObj) args

ConsumePlugin/GeneratedFileSystem.fs

@@ -31,7 +31,7 @@ module FileSystemItemCata =
     [<RequireQualifiedAccess>]
     type private Instruction =
         | Process__FileSystemItem of FileSystemItem
-        | FileSystemItem_Directory of string * int * int
+        | FileSystemItem_Directory of name : string * dirSize : int * contents : int
 
     let private loop (cata : FileSystemCata<'FileSystemItem>) (instructions : ResizeArray<Instruction>) =
         let fileSystemItemStack = ResizeArray<'FileSystemItem> ()
@@ -106,7 +106,7 @@ module GiftCata =
         | Process__Gift of Gift
         | Gift_Wrapped of WrappingPaperStyle
         | Gift_Boxed
-        | Gift_WithACard of string
+        | Gift_WithACard of message : string
 
     let private loop (cata : GiftCata<'Gift>) (instructions : ResizeArray<Instruction>) =
         let giftStack = ResizeArray<'Gift> ()

ConsumePlugin/GeneratedJson.fs

@@ -14,7 +14,24 @@ module internal InternalTypeNotExtensionSerial =
     /// Serialize to a JSON node
     let toJsonNode (input : InternalTypeNotExtensionSerial) : System.Text.Json.Nodes.JsonNode =
         let node = System.Text.Json.Nodes.JsonObject ()
-        do node.Add ((Literals.something), (input.InternalThing2 |> System.Text.Json.Nodes.JsonValue.Create<string>))
+
+        do
+            node.Add (
+                (Literals.something),
+                (input.InternalThing2
+                 |> (fun field ->
+                     let field = System.Text.Json.Nodes.JsonValue.Create<string> field
+
+                     (match field with
+                      | null ->
+                          raise (
+                              System.ArgumentNullException
+                                  "Expected type string to be non-null, but received a null value when serialising"
+                          )
+                      | field -> field)
+                 ))
+            )
+
         node :> _
 namespace ConsumePlugin
 
@@ -29,7 +46,24 @@ module internal InternalTypeExtensionJsonSerializeExtension =
         /// Serialize to a JSON node
         static member toJsonNode (input : InternalTypeExtension) : System.Text.Json.Nodes.JsonNode =
             let node = System.Text.Json.Nodes.JsonObject ()
-            do node.Add ((Literals.something), (input.ExternalThing |> System.Text.Json.Nodes.JsonValue.Create<string>))
+
+            do
+                node.Add (
+                    (Literals.something),
+                    (input.ExternalThing
+                     |> (fun field ->
+                         let field = System.Text.Json.Nodes.JsonValue.Create<string> field
+
+                         (match field with
+                          | null ->
+                              raise (
+                                  System.ArgumentNullException
+                                      "Expected type string to be non-null, but received a null value when serialising"
+                              )
+                          | field -> field)
+                     ))
+                )
+
             node :> _
 
 namespace ConsumePlugin
@@ -40,16 +74,14 @@ module InnerType =
     /// Parse from a JSON node.
     let jsonParse (node : System.Text.Json.Nodes.JsonNode) : InnerType =
         let arg_0 =
-            (match node.[(Literals.something)] with
-             | null ->
-                 raise (
-                     System.Collections.Generic.KeyNotFoundException (
-                         sprintf "Required key '%s' not found on JSON object" ((Literals.something))
-                     )
-                 )
-             | v -> v)
-                .AsValue()
-                .GetValue<System.String> ()
+            match node.[(Literals.something)] |> Option.ofObj with
+            | None ->
+                raise (
+                    System.Collections.Generic.KeyNotFoundException (
+                        sprintf "Required key '%s' not found on JSON object" ((Literals.something))
+                    )
+                )
+            | Some node -> node.AsValue().GetValue<System.String> ()
 
         {
             Thing = arg_0
@@ -62,79 +94,97 @@ module JsonRecordType =
     /// Parse from a JSON node.
     let jsonParse (node : System.Text.Json.Nodes.JsonNode) : JsonRecordType =
         let arg_5 =
-            (match node.["f"] with
-             | null ->
-                 raise (
-                     System.Collections.Generic.KeyNotFoundException (
-                         sprintf "Required key '%s' not found on JSON object" ("f")
-                     )
-                 )
-             | v -> v)
-                .AsArray ()
-            |> Seq.map (fun elt -> elt.AsValue().GetValue<System.Int32> ())
-            |> Array.ofSeq
+            match node.["f"] |> Option.ofObj with
+            | None ->
+                raise (
+                    System.Collections.Generic.KeyNotFoundException (
+                        sprintf "Required key '%s' not found on JSON object" ("f")
+                    )
+                )
+            | Some node ->
+                node.AsArray ()
+                |> Seq.map (fun elt ->
+                    (match elt with
+                     | null ->
+                         raise (
+                             System.ArgumentNullException
+                                 "Expected element of array (element type int32) to be non-null, but found a null element"
+                         )
+                     | elt -> elt.AsValue().GetValue<System.Int32> ())
+                )
+                |> Array.ofSeq
 
         let arg_4 =
-            (match node.["e"] with
-             | null ->
-                 raise (
-                     System.Collections.Generic.KeyNotFoundException (
-                         sprintf "Required key '%s' not found on JSON object" ("e")
-                     )
-                 )
-             | v -> v)
-                .AsArray ()
-            |> Seq.map (fun elt -> elt.AsValue().GetValue<System.String> ())
-            |> Array.ofSeq
+            match node.["e"] |> Option.ofObj with
+            | None ->
+                raise (
+                    System.Collections.Generic.KeyNotFoundException (
+                        sprintf "Required key '%s' not found on JSON object" ("e")
+                    )
+                )
+            | Some node ->
+                node.AsArray ()
+                |> Seq.map (fun elt ->
+                    (match elt with
+                     | null ->
+                         raise (
+                             System.ArgumentNullException
+                                 "Expected element of array (element type string) to be non-null, but found a null element"
+                         )
+                     | elt -> elt.AsValue().GetValue<System.String> ())
+                )
+                |> Array.ofSeq
 
         let arg_3 =
-            InnerType.jsonParse (
-                match node.["d"] with
-                | null ->
-                    raise (
-                        System.Collections.Generic.KeyNotFoundException (
-                            sprintf "Required key '%s' not found on JSON object" ("d")
-                        )
+            match node.["d"] |> Option.ofObj with
+            | None ->
+                raise (
+                    System.Collections.Generic.KeyNotFoundException (
+                        sprintf "Required key '%s' not found on JSON object" ("d")
                     )
-                | v -> v
-            )
+                )
+            | Some node -> InnerType.jsonParse node
 
         let arg_2 =
-            (match node.["hi"] with
-             | null ->
-                 raise (
-                     System.Collections.Generic.KeyNotFoundException (
-                         sprintf "Required key '%s' not found on JSON object" ("hi")
-                     )
-                 )
-             | v -> v)
-                .AsArray ()
-            |> Seq.map (fun elt -> elt.AsValue().GetValue<System.Int32> ())
-            |> List.ofSeq
+            match node.["hi"] |> Option.ofObj with
+            | None ->
+                raise (
+                    System.Collections.Generic.KeyNotFoundException (
+                        sprintf "Required key '%s' not found on JSON object" ("hi")
+                    )
+                )
+            | Some node ->
+                node.AsArray ()
+                |> Seq.map (fun elt ->
+                    (match elt with
+                     | null ->
+                         raise (
+                             System.ArgumentNullException
+                                 "Expected element of array (element type int32) to be non-null, but found a null element"
+                         )
+                     | elt -> elt.AsValue().GetValue<System.Int32> ())
+                )
+                |> List.ofSeq
 
         let arg_1 =
-            (match node.["another-thing"] with
-             | null ->
-                 raise (
-                     System.Collections.Generic.KeyNotFoundException (
-                         sprintf "Required key '%s' not found on JSON object" ("another-thing")
-                     )
-                 )
-             | v -> v)
-                .AsValue()
-                .GetValue<System.String> ()
+            match node.["another-thing"] |> Option.ofObj with
+            | None ->
+                raise (
+                    System.Collections.Generic.KeyNotFoundException (
+                        sprintf "Required key '%s' not found on JSON object" ("another-thing")
+                    )
+                )
+            | Some node -> node.AsValue().GetValue<System.String> ()
 
         let arg_0 =
-            (match node.["a"] with
-             | null ->
-                 raise (
-                     System.Collections.Generic.KeyNotFoundException (
-                         sprintf "Required key '%s' not found on JSON object" ("a")
-                     )
-                 )
-             | v -> v)
-                .AsValue()
-                .GetValue<System.Int32> ()
+            match node.["a"] |> Option.ofObj with
+            | None ->
+                raise (
+                    System.Collections.Generic.KeyNotFoundException (
+                        sprintf "Required key '%s' not found on JSON object" ("a")
+                    )
+                )
+            | Some node -> node.AsValue().GetValue<System.Int32> ()
 
         {
             A = arg_0
@@ -152,16 +202,14 @@ module internal InternalTypeNotExtension =
     /// Parse from a JSON node.
     let jsonParse (node : System.Text.Json.Nodes.JsonNode) : InternalTypeNotExtension =
         let arg_0 =
-            (match node.[(Literals.something)] with
-             | null ->
-                 raise (
-                     System.Collections.Generic.KeyNotFoundException (
-                         sprintf "Required key '%s' not found on JSON object" ((Literals.something))
-                     )
-                 )
-             | v -> v)
-                .AsValue()
-                .GetValue<System.String> ()
+            match node.[(Literals.something)] |> Option.ofObj with
+            | None ->
+                raise (
+                    System.Collections.Generic.KeyNotFoundException (
+                        sprintf "Required key '%s' not found on JSON object" ((Literals.something))
+                    )
+                )
+            | Some node -> node.AsValue().GetValue<System.String> ()
 
         {
             InternalThing = arg_0
@@ -177,16 +225,14 @@ module internal InternalTypeExtensionJsonParseExtension =
         /// Parse from a JSON node.
         static member jsonParse (node : System.Text.Json.Nodes.JsonNode) : InternalTypeExtension =
             let arg_0 =
-                (match node.[(Literals.something)] with
-                 | null ->
-                     raise (
-                         System.Collections.Generic.KeyNotFoundException (
-                             sprintf "Required key '%s' not found on JSON object" ((Literals.something))
-                         )
-                     )
-                 | v -> v)
-                    .AsValue()
-                    .GetValue<System.String> ()
+                match node.[(Literals.something)] |> Option.ofObj with
+                | None ->
+                    raise (
+                        System.Collections.Generic.KeyNotFoundException (
+                            sprintf "Required key '%s' not found on JSON object" ((Literals.something))
+                        )
+                    )
+                | Some node -> node.AsValue().GetValue<System.String> ()
 
             {
                 ExternalThing = arg_0
@@ -201,248 +247,215 @@ module ToGetExtensionMethodJsonParseExtension =
 
         /// Parse from a JSON node.
         static member jsonParse (node : System.Text.Json.Nodes.JsonNode) : ToGetExtensionMethod =
-            let arg_20 = System.Numerics.BigInteger.Parse (node.["whiskey"].ToJsonString ())
+            let arg_20 =
+                match node.["whiskey"] |> Option.ofObj with
+                | None ->
+                    raise (
+                        System.Collections.Generic.KeyNotFoundException (
+                            sprintf "Required key '%s' not found on JSON object" ("whiskey")
+                        )
+                    )
+                | Some node -> System.Numerics.BigInteger.Parse (node.ToJsonString ())
 
             let arg_19 =
-                (match node.["victor"] with
-                 | null ->
-                     raise (
-                         System.Collections.Generic.KeyNotFoundException (
-                             sprintf "Required key '%s' not found on JSON object" ("victor")
-                         )
-                     )
-                 | v -> v)
-                    .AsValue()
-                    .GetValue<System.Char> ()
+                match node.["victor"] |> Option.ofObj with
+                | None ->
+                    raise (
+                        System.Collections.Generic.KeyNotFoundException (
+                            sprintf "Required key '%s' not found on JSON object" ("victor")
+                        )
+                    )
+                | Some node -> node.AsValue().GetValue<System.Char> ()
 
             let arg_18 =
-                (match node.["uniform"] with
-                 | null ->
-                     raise (
-                         System.Collections.Generic.KeyNotFoundException (
-                             sprintf "Required key '%s' not found on JSON object" ("uniform")
-                         )
-                     )
-                 | v -> v)
-                    .AsValue()
-                    .GetValue<System.Decimal> ()
+                match node.["uniform"] |> Option.ofObj with
+                | None ->
+                    raise (
+                        System.Collections.Generic.KeyNotFoundException (
+                            sprintf "Required key '%s' not found on JSON object" ("uniform")
+                        )
+                    )
+                | Some node -> node.AsValue().GetValue<System.Decimal> ()
 
             let arg_17 =
-                (match node.["tango"] with
-                 | null ->
-                     raise (
-                         System.Collections.Generic.KeyNotFoundException (
-                             sprintf "Required key '%s' not found on JSON object" ("tango")
-                         )
-                     )
-                 | v -> v)
-                    .AsValue()
-                    .GetValue<System.SByte> ()
+                match node.["tango"] |> Option.ofObj with
+                | None ->
+                    raise (
+                        System.Collections.Generic.KeyNotFoundException (
+                            sprintf "Required key '%s' not found on JSON object" ("tango")
+                        )
+                    )
+                | Some node -> node.AsValue().GetValue<System.SByte> ()
 
             let arg_16 =
-                (match node.["quebec"] with
-                 | null ->
-                     raise (
-                         System.Collections.Generic.KeyNotFoundException (
-                             sprintf "Required key '%s' not found on JSON object" ("quebec")
-                         )
-                     )
-                 | v -> v)
-                    .AsValue()
-                    .GetValue<System.Byte> ()
+                match node.["quebec"] |> Option.ofObj with
+                | None ->
+                    raise (
+                        System.Collections.Generic.KeyNotFoundException (
+                            sprintf "Required key '%s' not found on JSON object" ("quebec")
+                        )
+                    )
+                | Some node -> node.AsValue().GetValue<System.Byte> ()
 
             let arg_15 =
-                (match node.["papa"] with
-                 | null ->
-                     raise (
-                         System.Collections.Generic.KeyNotFoundException (
-                             sprintf "Required key '%s' not found on JSON object" ("papa")
-                         )
-                     )
-                 | v -> v)
-                    .AsValue()
-                    .GetValue<System.Byte> ()
+                match node.["papa"] |> Option.ofObj with
+                | None ->
+                    raise (
+                        System.Collections.Generic.KeyNotFoundException (
+                            sprintf "Required key '%s' not found on JSON object" ("papa")
+                        )
+                    )
+                | Some node -> node.AsValue().GetValue<System.Byte> ()
 
             let arg_14 =
-                (match node.["oscar"] with
-                 | null ->
-                     raise (
-                         System.Collections.Generic.KeyNotFoundException (
-                             sprintf "Required key '%s' not found on JSON object" ("oscar")
-                         )
-                     )
-                 | v -> v)
-                    .AsValue()
-                    .GetValue<System.SByte> ()
+                match node.["oscar"] |> Option.ofObj with
+                | None ->
+                    raise (
+                        System.Collections.Generic.KeyNotFoundException (
+                            sprintf "Required key '%s' not found on JSON object" ("oscar")
+                        )
+                    )
+                | Some node -> node.AsValue().GetValue<System.SByte> ()
 
             let arg_13 =
-                (match node.["november"] with
-                 | null ->
-                     raise (
-                         System.Collections.Generic.KeyNotFoundException (
-                             sprintf "Required key '%s' not found on JSON object" ("november")
-                         )
-                     )
-                 | v -> v)
-                    .AsValue()
-                    .GetValue<System.UInt16> ()
+                match node.["november"] |> Option.ofObj with
+                | None ->
+                    raise (
+                        System.Collections.Generic.KeyNotFoundException (
+                            sprintf "Required key '%s' not found on JSON object" ("november")
+                        )
+                    )
+                | Some node -> node.AsValue().GetValue<System.UInt16> ()
 
             let arg_12 =
-                (match node.["mike"] with
-                 | null ->
-                     raise (
-                         System.Collections.Generic.KeyNotFoundException (
-                             sprintf "Required key '%s' not found on JSON object" ("mike")
-                         )
-                     )
-                 | v -> v)
-                    .AsValue()
-                    .GetValue<System.Int16> ()
+                match node.["mike"] |> Option.ofObj with
+                | None ->
+                    raise (
+                        System.Collections.Generic.KeyNotFoundException (
+                            sprintf "Required key '%s' not found on JSON object" ("mike")
+                        )
+                    )
+                | Some node -> node.AsValue().GetValue<System.Int16> ()
 
             let arg_11 =
-                (match node.["lima"] with
-                 | null ->
-                     raise (
-                         System.Collections.Generic.KeyNotFoundException (
-                             sprintf "Required key '%s' not found on JSON object" ("lima")
-                         )
-                     )
-                 | v -> v)
-                    .AsValue()
-                    .GetValue<System.UInt32> ()
+                match node.["lima"] |> Option.ofObj with
+                | None ->
+                    raise (
+                        System.Collections.Generic.KeyNotFoundException (
+                            sprintf "Required key '%s' not found on JSON object" ("lima")
+                        )
+                    )
+                | Some node -> node.AsValue().GetValue<System.UInt32> ()
 
             let arg_10 =
-                (match node.["kilo"] with
-                 | null ->
-                     raise (
-                         System.Collections.Generic.KeyNotFoundException (
-                             sprintf "Required key '%s' not found on JSON object" ("kilo")
-                         )
-                     )
-                 | v -> v)
-                    .AsValue()
-                    .GetValue<System.Int32> ()
+                match node.["kilo"] |> Option.ofObj with
+                | None ->
+                    raise (
+                        System.Collections.Generic.KeyNotFoundException (
+                            sprintf "Required key '%s' not found on JSON object" ("kilo")
+                        )
+                    )
+                | Some node -> node.AsValue().GetValue<System.Int32> ()
 
             let arg_9 =
-                (match node.["juliette"] with
-                 | null ->
-                     raise (
-                         System.Collections.Generic.KeyNotFoundException (
-                             sprintf "Required key '%s' not found on JSON object" ("juliette")
-                         )
-                     )
-                 | v -> v)
-                    .AsValue()
-                    .GetValue<System.UInt32> ()
+                match node.["juliette"] |> Option.ofObj with
+                | None ->
+                    raise (
+                        System.Collections.Generic.KeyNotFoundException (
+                            sprintf "Required key '%s' not found on JSON object" ("juliette")
+                        )
+                    )
+                | Some node -> node.AsValue().GetValue<System.UInt32> ()
 
             let arg_8 =
-                (match node.["india"] with
-                 | null ->
-                     raise (
-                         System.Collections.Generic.KeyNotFoundException (
-                             sprintf "Required key '%s' not found on JSON object" ("india")
-                         )
-                     )
-                 | v -> v)
-                    .AsValue()
-                    .GetValue<System.Int32> ()
+                match node.["india"] |> Option.ofObj with
+                | None ->
+                    raise (
+                        System.Collections.Generic.KeyNotFoundException (
+                            sprintf "Required key '%s' not found on JSON object" ("india")
+                        )
+                    )
+                | Some node -> node.AsValue().GetValue<System.Int32> ()
 
             let arg_7 =
-                (match node.["hotel"] with
-                 | null ->
-                     raise (
-                         System.Collections.Generic.KeyNotFoundException (
-                             sprintf "Required key '%s' not found on JSON object" ("hotel")
-                         )
-                     )
-                 | v -> v)
-                    .AsValue()
-                    .GetValue<System.UInt64> ()
+                match node.["hotel"] |> Option.ofObj with
+                | None ->
+                    raise (
+                        System.Collections.Generic.KeyNotFoundException (
+                            sprintf "Required key '%s' not found on JSON object" ("hotel")
+                        )
+                    )
+                | Some node -> node.AsValue().GetValue<System.UInt64> ()
 
             let arg_6 =
-                (match node.["golf"] with
-                 | null ->
-                     raise (
-                         System.Collections.Generic.KeyNotFoundException (
-                             sprintf "Required key '%s' not found on JSON object" ("golf")
-                         )
-                     )
-                 | v -> v)
-                    .AsValue()
-                    .GetValue<System.Int64> ()
+                match node.["golf"] |> Option.ofObj with
+                | None ->
+                    raise (
+                        System.Collections.Generic.KeyNotFoundException (
+                            sprintf "Required key '%s' not found on JSON object" ("golf")
+                        )
+                    )
+                | Some node -> node.AsValue().GetValue<System.Int64> ()
 
             let arg_5 =
-                (match node.["foxtrot"] with
-                 | null ->
-                     raise (
-                         System.Collections.Generic.KeyNotFoundException (
-                             sprintf "Required key '%s' not found on JSON object" ("foxtrot")
-                         )
-                     )
-                 | v -> v)
-                    .AsValue()
-                    .GetValue<System.Double> ()
+                match node.["foxtrot"] |> Option.ofObj with
+                | None ->
+                    raise (
+                        System.Collections.Generic.KeyNotFoundException (
+                            sprintf "Required key '%s' not found on JSON object" ("foxtrot")
+                        )
+                    )
+                | Some node -> node.AsValue().GetValue<System.Double> ()
 
             let arg_4 =
-                (match node.["echo"] with
-                 | null ->
-                     raise (
-                         System.Collections.Generic.KeyNotFoundException (
-                             sprintf "Required key '%s' not found on JSON object" ("echo")
-                         )
-                     )
-                 | v -> v)
-                    .AsValue()
-                    .GetValue<System.Single> ()
+                match node.["echo"] |> Option.ofObj with
+                | None ->
+                    raise (
+                        System.Collections.Generic.KeyNotFoundException (
+                            sprintf "Required key '%s' not found on JSON object" ("echo")
+                        )
+                    )
+                | Some node -> node.AsValue().GetValue<System.Single> ()
 
             let arg_3 =
-                (match node.["delta"] with
-                 | null ->
-                     raise (
-                         System.Collections.Generic.KeyNotFoundException (
-                             sprintf "Required key '%s' not found on JSON object" ("delta")
-                         )
-                     )
-                 | v -> v)
-                    .AsValue()
-                    .GetValue<System.Single> ()
+                match node.["delta"] |> Option.ofObj with
+                | None ->
+                    raise (
+                        System.Collections.Generic.KeyNotFoundException (
+                            sprintf "Required key '%s' not found on JSON object" ("delta")
+                        )
+                    )
+                | Some node -> node.AsValue().GetValue<System.Single> ()
 
             let arg_2 =
-                (match node.["charlie"] with
-                 | null ->
-                     raise (
-                         System.Collections.Generic.KeyNotFoundException (
-                             sprintf "Required key '%s' not found on JSON object" ("charlie")
-                         )
-                     )
-                 | v -> v)
-                    .AsValue()
-                    .GetValue<System.Double> ()
+                match node.["charlie"] |> Option.ofObj with
+                | None ->
+                    raise (
+                        System.Collections.Generic.KeyNotFoundException (
+                            sprintf "Required key '%s' not found on JSON object" ("charlie")
+                        )
+                    )
+                | Some node -> node.AsValue().GetValue<System.Double> ()
 
             let arg_1 =
-                (match node.["bravo"] with
-                 | null ->
-                     raise (
-                         System.Collections.Generic.KeyNotFoundException (
-                             sprintf "Required key '%s' not found on JSON object" ("bravo")
-                         )
-                     )
-                 | v -> v)
-                    .AsValue()
-                    .GetValue<string> ()
-                |> System.Uri
+                match node.["bravo"] |> Option.ofObj with
+                | None ->
+                    raise (
+                        System.Collections.Generic.KeyNotFoundException (
+                            sprintf "Required key '%s' not found on JSON object" ("bravo")
+                        )
+                    )
+                | Some node -> node.AsValue().GetValue<string> () |> System.Uri
 
             let arg_0 =
-                (match node.["alpha"] with
-                 | null ->
-                     raise (
-                         System.Collections.Generic.KeyNotFoundException (
-                             sprintf "Required key '%s' not found on JSON object" ("alpha")
-                         )
-                     )
-                 | v -> v)
-                    .AsValue()
-                    .GetValue<System.String> ()
+                match node.["alpha"] |> Option.ofObj with
+                | None ->
+                    raise (
+                        System.Collections.Generic.KeyNotFoundException (
+                            sprintf "Required key '%s' not found on JSON object" ("alpha")
+                        )
+                    )
+                | Some node -> node.AsValue().GetValue<System.String> ()
 
             {
                 Alpha = arg_0

ConsumePlugin/GeneratedMock.fs

@@ -206,3 +206,34 @@ type internal TypeWithInterfaceMock =
 
     interface System.IDisposable with
         member this.Dispose () : unit = this.Dispose ()
+namespace SomeNamespace
+
+open System
+open WoofWare.Myriad.Plugins
+
+/// Mock record type for an interface
+type internal TypeWithPropertiesMock =
+    {
+        /// Implementation of IDisposable.Dispose
+        Dispose : unit -> unit
+        Prop1 : unit -> int
+        Prop2 : unit -> unit Async
+        Mem1 : string option -> string[] Async
+    }
+
+    /// An implementation where every method throws.
+    static member Empty : TypeWithPropertiesMock =
+        {
+            Dispose = (fun () -> ())
+            Prop1 = (fun _ -> raise (System.NotImplementedException "Unimplemented mock function: Prop1"))
+            Prop2 = (fun _ -> raise (System.NotImplementedException "Unimplemented mock function: Prop2"))
+            Mem1 = (fun _ -> raise (System.NotImplementedException "Unimplemented mock function: Mem1"))
+        }
+
+    interface TypeWithProperties with
+        member this.Mem1 arg_0_0 = this.Mem1 (arg_0_0)
+        member this.Prop1 = this.Prop1 ()
+        member this.Prop2 = this.Prop2 ()
+
+    interface System.IDisposable with
+        member this.Dispose () : unit = this.Dispose ()

ConsumePlugin/GeneratedMockNoAttributes.fs

@@ -0,0 +1,200 @@
+//------------------------------------------------------------------------------
+//        This code was generated by myriad.
+//        Changes to this file will be lost when the code is regenerated.
+//------------------------------------------------------------------------------
+
+namespace SomeNamespace
+
+open System
+
+/// Mock record type for an interface
+type internal PublicTypeNoAttrMock =
+    {
+        Mem1 : string * int -> string list
+        Mem2 : string -> int
+        Mem3 : int * option<System.Threading.CancellationToken> -> string
+    }
+
+    /// An implementation where every method throws.
+    static member Empty : PublicTypeNoAttrMock =
+        {
+            Mem1 = (fun _ -> raise (System.NotImplementedException "Unimplemented mock function: Mem1"))
+            Mem2 = (fun _ -> raise (System.NotImplementedException "Unimplemented mock function: Mem2"))
+            Mem3 = (fun _ -> raise (System.NotImplementedException "Unimplemented mock function: Mem3"))
+        }
+
+    interface IPublicTypeNoAttr with
+        member this.Mem1 (arg_0_0, arg_0_1) = this.Mem1 (arg_0_0, arg_0_1)
+        member this.Mem2 arg_0_0 = this.Mem2 (arg_0_0)
+        member this.Mem3 (arg_0_0, arg_0_1) = this.Mem3 (arg_0_0, arg_0_1)
+namespace SomeNamespace
+
+open System
+
+/// Mock record type for an interface
+type public PublicTypeInternalFalseNoAttrMock =
+    {
+        Mem1 : string * int -> string list
+        Mem2 : string -> int
+        Mem3 : int * option<System.Threading.CancellationToken> -> string
+    }
+
+    /// An implementation where every method throws.
+    static member Empty : PublicTypeInternalFalseNoAttrMock =
+        {
+            Mem1 = (fun _ -> raise (System.NotImplementedException "Unimplemented mock function: Mem1"))
+            Mem2 = (fun _ -> raise (System.NotImplementedException "Unimplemented mock function: Mem2"))
+            Mem3 = (fun _ -> raise (System.NotImplementedException "Unimplemented mock function: Mem3"))
+        }
+
+    interface IPublicTypeInternalFalseNoAttr with
+        member this.Mem1 (arg_0_0, arg_0_1) = this.Mem1 (arg_0_0, arg_0_1)
+        member this.Mem2 arg_0_0 = this.Mem2 (arg_0_0)
+        member this.Mem3 (arg_0_0, arg_0_1) = this.Mem3 (arg_0_0, arg_0_1)
+namespace SomeNamespace
+
+open System
+
+/// Mock record type for an interface
+type internal InternalTypeNoAttrMock =
+    {
+        Mem1 : string * int -> unit
+        Mem2 : string -> int
+    }
+
+    /// An implementation where every method throws.
+    static member Empty : InternalTypeNoAttrMock =
+        {
+            Mem1 = (fun _ -> raise (System.NotImplementedException "Unimplemented mock function: Mem1"))
+            Mem2 = (fun _ -> raise (System.NotImplementedException "Unimplemented mock function: Mem2"))
+        }
+
+    interface InternalTypeNoAttr with
+        member this.Mem1 (arg_0_0, arg_0_1) = this.Mem1 (arg_0_0, arg_0_1)
+        member this.Mem2 arg_0_0 = this.Mem2 (arg_0_0)
+namespace SomeNamespace
+
+open System
+
+/// Mock record type for an interface
+type private PrivateTypeNoAttrMock =
+    {
+        Mem1 : string * int -> unit
+        Mem2 : string -> int
+    }
+
+    /// An implementation where every method throws.
+    static member Empty : PrivateTypeNoAttrMock =
+        {
+            Mem1 = (fun _ -> raise (System.NotImplementedException "Unimplemented mock function: Mem1"))
+            Mem2 = (fun _ -> raise (System.NotImplementedException "Unimplemented mock function: Mem2"))
+        }
+
+    interface PrivateTypeNoAttr with
+        member this.Mem1 (arg_0_0, arg_0_1) = this.Mem1 (arg_0_0, arg_0_1)
+        member this.Mem2 arg_0_0 = this.Mem2 (arg_0_0)
+namespace SomeNamespace
+
+open System
+
+/// Mock record type for an interface
+type private PrivateTypeInternalFalseNoAttrMock =
+    {
+        Mem1 : string * int -> unit
+        Mem2 : string -> int
+    }
+
+    /// An implementation where every method throws.
+    static member Empty : PrivateTypeInternalFalseNoAttrMock =
+        {
+            Mem1 = (fun _ -> raise (System.NotImplementedException "Unimplemented mock function: Mem1"))
+            Mem2 = (fun _ -> raise (System.NotImplementedException "Unimplemented mock function: Mem2"))
+        }
+
+    interface PrivateTypeInternalFalseNoAttr with
+        member this.Mem1 (arg_0_0, arg_0_1) = this.Mem1 (arg_0_0, arg_0_1)
+        member this.Mem2 arg_0_0 = this.Mem2 (arg_0_0)
+namespace SomeNamespace
+
+open System
+
+/// Mock record type for an interface
+type internal VeryPublicTypeNoAttrMock<'a, 'b> =
+    {
+        Mem1 : 'a -> 'b
+    }
+
+    /// An implementation where every method throws.
+    static member Empty () : VeryPublicTypeNoAttrMock<'a, 'b> =
+        {
+            Mem1 = (fun _ -> raise (System.NotImplementedException "Unimplemented mock function: Mem1"))
+        }
+
+    interface VeryPublicTypeNoAttr<'a, 'b> with
+        member this.Mem1 arg_0_0 = this.Mem1 (arg_0_0)
+namespace SomeNamespace
+
+open System
+
+/// Mock record type for an interface
+type internal CurriedNoAttrMock<'a> =
+    {
+        Mem1 : int -> 'a -> string
+        Mem2 : int * string -> 'a -> string
+        Mem3 : (int * string) -> 'a -> string
+        Mem4 : (int * string) -> ('a * int) -> string
+        Mem5 : int * string -> ('a * int) -> string
+        Mem6 : int * string -> 'a * int -> string
+    }
+
+    /// An implementation where every method throws.
+    static member Empty () : CurriedNoAttrMock<'a> =
+        {
+            Mem1 = (fun _ -> raise (System.NotImplementedException "Unimplemented mock function: Mem1"))
+            Mem2 = (fun _ -> raise (System.NotImplementedException "Unimplemented mock function: Mem2"))
+            Mem3 = (fun _ -> raise (System.NotImplementedException "Unimplemented mock function: Mem3"))
+            Mem4 = (fun _ -> raise (System.NotImplementedException "Unimplemented mock function: Mem4"))
+            Mem5 = (fun _ -> raise (System.NotImplementedException "Unimplemented mock function: Mem5"))
+            Mem6 = (fun _ -> raise (System.NotImplementedException "Unimplemented mock function: Mem6"))
+        }
+
+    interface CurriedNoAttr<'a> with
+        member this.Mem1 arg_0_0 arg_1_0 = this.Mem1 (arg_0_0) (arg_1_0)
+        member this.Mem2 (arg_0_0, arg_0_1) arg_1_0 = this.Mem2 (arg_0_0, arg_0_1) (arg_1_0)
+        member this.Mem3 ((arg_0_0, arg_0_1)) arg_1_0 = this.Mem3 (arg_0_0, arg_0_1) (arg_1_0)
+
+        member this.Mem4 ((arg_0_0, arg_0_1)) ((arg_1_0, arg_1_1)) =
+            this.Mem4 (arg_0_0, arg_0_1) (arg_1_0, arg_1_1)
+
+        member this.Mem5 (arg_0_0, arg_0_1) ((arg_1_0, arg_1_1)) =
+            this.Mem5 (arg_0_0, arg_0_1) (arg_1_0, arg_1_1)
+
+        member this.Mem6 (arg_0_0, arg_0_1) (arg_1_0, arg_1_1) =
+            this.Mem6 (arg_0_0, arg_0_1) (arg_1_0, arg_1_1)
+namespace SomeNamespace
+
+open System
+
+/// Mock record type for an interface
+type internal TypeWithInterfaceNoAttrMock =
+    {
+        /// Implementation of IDisposable.Dispose
+        Dispose : unit -> unit
+        Mem1 : string option -> string[] Async
+        Mem2 : unit -> string[] Async
+    }
+
+    /// An implementation where every method throws.
+    static member Empty : TypeWithInterfaceNoAttrMock =
+        {
+            Dispose = (fun () -> ())
+            Mem1 = (fun _ -> raise (System.NotImplementedException "Unimplemented mock function: Mem1"))
+            Mem2 = (fun _ -> raise (System.NotImplementedException "Unimplemented mock function: Mem2"))
+        }
+
+    interface TypeWithInterfaceNoAttr with
+        member this.Mem1 arg_0_0 = this.Mem1 (arg_0_0)
+        member this.Mem2 () = this.Mem2 (())
+
+    interface System.IDisposable with
+        member this.Dispose () : unit = this.Dispose ()

ConsumePlugin/GeneratedRestClient.fs

@@ -48,7 +48,27 @@ module PureGymApi =
                         System.Text.Json.Nodes.JsonNode.ParseAsync (responseStream, cancellationToken = ct)
                         |> Async.AwaitTask
 
-                    return jsonNode.AsArray () |> Seq.map (fun elt -> Gym.jsonParse elt) |> List.ofSeq
+                    let jsonNode =
+                        (match jsonNode with
+                         | null ->
+                             raise (
+                                 System.ArgumentNullException
+                                     "Response from server was the JSON null object; expected a non-nullable type Gym list"
+                             )
+                         | jsonNode -> jsonNode)
+
+                    return
+                        jsonNode.AsArray ()
+                        |> Seq.map (fun elt ->
+                            (match elt with
+                             | null ->
+                                 raise (
+                                     System.ArgumentNullException
+                                         "Expected element of array (element type Gym) to be non-null, but found a null element"
+                                 )
+                             | elt -> Gym.jsonParse elt)
+                        )
+                        |> List.ofSeq
                 }
                 |> (fun a -> Async.StartAsTask (a, ?cancellationToken = ct))
 
@@ -63,7 +83,7 @@ module PureGymApi =
                              | v -> v),
                             System.Uri (
                                 "v1/gyms/{gym_id}/attendance"
-                                    .Replace ("{gym_id}", gymId.ToString () |> System.Web.HttpUtility.UrlEncode),
+                                    .Replace ("{gym_id}", gymId.ToString () |> System.Uri.EscapeDataString),
                                 System.UriKind.Relative
                             )
                         )
@@ -82,6 +102,15 @@ module PureGymApi =
                         System.Text.Json.Nodes.JsonNode.ParseAsync (responseStream, cancellationToken = ct)
                         |> Async.AwaitTask
 
+                    let jsonNode =
+                        (match jsonNode with
+                         | null ->
+                             raise (
+                                 System.ArgumentNullException
+                                     "Response from server was the JSON null object; expected a non-nullable type GymAttendance"
+                             )
+                         | jsonNode -> jsonNode)
+
                     return GymAttendance.jsonParse jsonNode
                 }
                 |> (fun a -> Async.StartAsTask (a, ?cancellationToken = ct))
@@ -97,7 +126,7 @@ module PureGymApi =
                              | v -> v),
                             System.Uri (
                                 "v1/gyms/{gym_id}/attendance"
-                                    .Replace ("{gym_id}", gymId.ToString () |> System.Web.HttpUtility.UrlEncode),
+                                    .Replace ("{gym_id}", gymId.ToString () |> System.Uri.EscapeDataString),
                                 System.UriKind.Relative
                             )
                         )
@@ -116,6 +145,15 @@ module PureGymApi =
                         System.Text.Json.Nodes.JsonNode.ParseAsync (responseStream, cancellationToken = ct)
                         |> Async.AwaitTask
 
+                    let jsonNode =
+                        (match jsonNode with
+                         | null ->
+                             raise (
+                                 System.ArgumentNullException
+                                     "Response from server was the JSON null object; expected a non-nullable type GymAttendance"
+                             )
+                         | jsonNode -> jsonNode)
+
                     return GymAttendance.jsonParse jsonNode
                 }
                 |> (fun a -> Async.StartAsTask (a, ?cancellationToken = ct))
@@ -146,6 +184,15 @@ module PureGymApi =
                         System.Text.Json.Nodes.JsonNode.ParseAsync (responseStream, cancellationToken = ct)
                         |> Async.AwaitTask
 
+                    let jsonNode =
+                        (match jsonNode with
+                         | null ->
+                             raise (
+                                 System.ArgumentNullException
+                                     "Response from server was the JSON null object; expected a non-nullable type Member"
+                             )
+                         | jsonNode -> jsonNode)
+
                     return Member.jsonParse jsonNode
                 }
                 |> (fun a -> Async.StartAsTask (a, ?cancellationToken = ct))
@@ -160,8 +207,7 @@ module PureGymApi =
                              | null -> System.Uri "https://whatnot.com/"
                              | v -> v),
                             System.Uri (
-                                "v1/gyms/{gym}"
-                                    .Replace ("{gym}", gym.ToString () |> System.Web.HttpUtility.UrlEncode),
+                                "v1/gyms/{gym}".Replace ("{gym}", gym.ToString () |> System.Uri.EscapeDataString),
                                 System.UriKind.Relative
                             )
                         )
@@ -180,6 +226,15 @@ module PureGymApi =
                         System.Text.Json.Nodes.JsonNode.ParseAsync (responseStream, cancellationToken = ct)
                         |> Async.AwaitTask
 
+                    let jsonNode =
+                        (match jsonNode with
+                         | null ->
+                             raise (
+                                 System.ArgumentNullException
+                                     "Response from server was the JSON null object; expected a non-nullable type Gym"
+                             )
+                         | jsonNode -> jsonNode)
+
                     return Gym.jsonParse jsonNode
                 }
                 |> (fun a -> Async.StartAsTask (a, ?cancellationToken = ct))
@@ -210,6 +265,15 @@ module PureGymApi =
                         System.Text.Json.Nodes.JsonNode.ParseAsync (responseStream, cancellationToken = ct)
                         |> Async.AwaitTask
 
+                    let jsonNode =
+                        (match jsonNode with
+                         | null ->
+                             raise (
+                                 System.ArgumentNullException
+                                     "Response from server was the JSON null object; expected a non-nullable type MemberActivityDto"
+                             )
+                         | jsonNode -> jsonNode)
+
                     return MemberActivityDto.jsonParse jsonNode
                 }
                 |> (fun a -> Async.StartAsTask (a, ?cancellationToken = ct))
@@ -240,6 +304,15 @@ module PureGymApi =
                         System.Text.Json.Nodes.JsonNode.ParseAsync (responseStream, cancellationToken = ct)
                         |> Async.AwaitTask
 
+                    let jsonNode =
+                        (match jsonNode with
+                         | null ->
+                             raise (
+                                 System.ArgumentNullException
+                                     "Response from server was the JSON null object; expected a non-nullable type UriThing"
+                             )
+                         | jsonNode -> jsonNode)
+
                     return UriThing.jsonParse jsonNode
                 }
                 |> (fun a -> Async.StartAsTask (a, ?cancellationToken = ct))
@@ -267,23 +340,42 @@ module PureGymApi =
                             foo
                             |> (fun field ->
                                 match field with
-                                | None -> null :> System.Text.Json.Nodes.JsonNode
+                                | None -> None
                                 | Some field ->
-                                    ((fun field ->
-                                        let ret = System.Text.Json.Nodes.JsonObject ()
+                                    (field
+                                     |> (fun field ->
+                                         let ret = System.Text.Json.Nodes.JsonObject ()
 
-                                        for (KeyValue (key, value)) in field do
-                                            ret.Add (
-                                                key.ToString (),
-                                                System.Text.Json.Nodes.JsonValue.Create<string> value
-                                            )
+                                         for (KeyValue (key, value)) in field do
+                                             let key = key.ToString ()
 
-                                        ret
-                                    )
-                                        field)
+                                             ret.Add (
+                                                 key,
+                                                 (fun field ->
+                                                     let field =
+                                                         System.Text.Json.Nodes.JsonValue.Create<string> field
+
+                                                     (match field with
+                                                      | null ->
+                                                          raise (
+                                                              System.ArgumentNullException
+                                                                  "Expected type string to be non-null, but received a null value when serialising"
+                                                          )
+                                                      | field -> field)
+                                                 )
+                                                     value
+                                             )
+
+                                         ret
+                                     ))
                                     :> System.Text.Json.Nodes.JsonNode
+                                    |> Some
+                            )
+                            |> (fun node ->
+                                match node with
+                                | None -> "null"
+                                | Some node -> node.ToJsonString ()
                             )
-                            |> (fun node -> if isNull node then "null" else node.ToJsonString ())
                         )
 
                     do httpMessage.Content <- queryParams
@@ -295,15 +387,25 @@ module PureGymApi =
                         System.Text.Json.Nodes.JsonNode.ParseAsync (responseStream, cancellationToken = ct)
                         |> Async.AwaitTask
 
+                    let jsonNode = jsonNode |> Option.ofObj
+
                     return
                         match jsonNode with
-                        | null -> None
-                        | v ->
+                        | None -> None
+                        | Some v ->
                             v.AsObject ()
                             |> Seq.map (fun kvp ->
                                 let key = (kvp.Key)
-                                let value = (kvp.Value).AsValue().GetValue<System.String> ()
-                                key, value
+                                let value = kvp.Value
+
+                                key,
+                                (match value with
+                                 | null ->
+                                     raise (
+                                         System.ArgumentNullException
+                                             "Expected dictionary value of type string to be non-null, but it was null"
+                                     )
+                                 | value -> value.AsValue().GetValue<System.String> ())
                             )
                             |> Map.ofSeq
                             |> Some
@@ -326,9 +428,9 @@ module PureGymApi =
                                     else
                                         "?")
                                  + "fromDate="
-                                 + ((fromDate.ToString "yyyy-MM-dd") |> System.Web.HttpUtility.UrlEncode)
+                                 + ((fromDate.ToString "yyyy-MM-dd") |> System.Uri.EscapeDataString)
                                  + "&toDate="
-                                 + ((toDate.ToString "yyyy-MM-dd") |> System.Web.HttpUtility.UrlEncode)),
+                                 + ((toDate.ToString "yyyy-MM-dd") |> System.Uri.EscapeDataString)),
                                 System.UriKind.Relative
                             )
                         )
@@ -347,6 +449,15 @@ module PureGymApi =
                         System.Text.Json.Nodes.JsonNode.ParseAsync (responseStream, cancellationToken = ct)
                         |> Async.AwaitTask
 
+                    let jsonNode =
+                        (match jsonNode with
+                         | null ->
+                             raise (
+                                 System.ArgumentNullException
+                                     "Response from server was the JSON null object; expected a non-nullable type Sessions"
+                             )
+                         | jsonNode -> jsonNode)
+
                     return Sessions.jsonParse jsonNode
                 }
                 |> (fun a -> Async.StartAsTask (a, ?cancellationToken = ct))
@@ -367,9 +478,9 @@ module PureGymApi =
                                     else
                                         "?")
                                  + "fromDate="
-                                 + ((fromDate.ToString "yyyy-MM-dd") |> System.Web.HttpUtility.UrlEncode)
+                                 + ((fromDate.ToString "yyyy-MM-dd") |> System.Uri.EscapeDataString)
                                  + "&toDate="
-                                 + ((toDate.ToString "yyyy-MM-dd") |> System.Web.HttpUtility.UrlEncode)),
+                                 + ((toDate.ToString "yyyy-MM-dd") |> System.Uri.EscapeDataString)),
                                 System.UriKind.Relative
                             )
                         )
@@ -388,6 +499,15 @@ module PureGymApi =
                         System.Text.Json.Nodes.JsonNode.ParseAsync (responseStream, cancellationToken = ct)
                         |> Async.AwaitTask
 
+                    let jsonNode =
+                        (match jsonNode with
+                         | null ->
+                             raise (
+                                 System.ArgumentNullException
+                                     "Response from server was the JSON null object; expected a non-nullable type Sessions"
+                             )
+                         | jsonNode -> jsonNode)
+
                     return Sessions.jsonParse jsonNode
                 }
                 |> (fun a -> Async.StartAsTask (a, ?cancellationToken = ct))
@@ -547,9 +667,7 @@ module PureGymApi =
 
                     let queryParams =
                         new System.Net.Http.StringContent (
-                            user
-                            |> PureGym.Member.toJsonNode
-                            |> (fun node -> if isNull node then "null" else node.ToJsonString ())
+                            user |> PureGym.Member.toJsonNode |> (fun node -> node.ToJsonString ())
                         )
 
                     do httpMessage.Content <- queryParams
@@ -581,8 +699,18 @@ module PureGymApi =
                     let queryParams =
                         new System.Net.Http.StringContent (
                             user
-                            |> System.Text.Json.Nodes.JsonValue.Create<Uri>
-                            |> (fun node -> if isNull node then "null" else node.ToJsonString ())
+                            |> (fun field ->
+                                let field = System.Text.Json.Nodes.JsonValue.Create<Uri> field
+
+                                (match field with
+                                 | null ->
+                                     raise (
+                                         System.ArgumentNullException
+                                             "Expected type URI to be non-null, but received a null value when serialising"
+                                     )
+                                 | field -> field)
+                            )
+                            |> (fun node -> node.ToJsonString ())
                         )
 
                     do httpMessage.Content <- queryParams
@@ -614,8 +742,18 @@ module PureGymApi =
                     let queryParams =
                         new System.Net.Http.StringContent (
                             user
-                            |> System.Text.Json.Nodes.JsonValue.Create<int>
-                            |> (fun node -> if isNull node then "null" else node.ToJsonString ())
+                            |> (fun field ->
+                                let field = System.Text.Json.Nodes.JsonValue.Create<int> field
+
+                                (match field with
+                                 | null ->
+                                     raise (
+                                         System.ArgumentNullException
+                                             "Expected type int32 to be non-null, but received a null value when serialising"
+                                     )
+                                 | field -> field)
+                            )
+                            |> (fun node -> node.ToJsonString ())
                         )
 
                     do httpMessage.Content <- queryParams
@@ -663,7 +801,7 @@ module PureGymApi =
                              | v -> v),
                             System.Uri (
                                 "endpoint/{param}"
-                                    .Replace ("{param}", parameter.ToString () |> System.Web.HttpUtility.UrlEncode),
+                                    .Replace ("{param}", parameter.ToString () |> System.Uri.EscapeDataString),
                                 System.UriKind.Relative
                             )
                         )
@@ -879,6 +1017,15 @@ module PureGymApi =
                         System.Text.Json.Nodes.JsonNode.ParseAsync (responseStream, cancellationToken = ct)
                         |> Async.AwaitTask
 
+                    let jsonNode =
+                        (match jsonNode with
+                         | null ->
+                             raise (
+                                 System.ArgumentNullException
+                                     "Response from server was the JSON null object; expected a non-nullable type Response<MemberActivityDto>"
+                             )
+                         | jsonNode -> jsonNode)
+
                     return
                         new RestEase.Response<_> (
                             responseString,
@@ -915,6 +1062,15 @@ module PureGymApi =
                         System.Text.Json.Nodes.JsonNode.ParseAsync (responseStream, cancellationToken = ct)
                         |> Async.AwaitTask
 
+                    let jsonNode =
+                        (match jsonNode with
+                         | null ->
+                             raise (
+                                 System.ArgumentNullException
+                                     "Response from server was the JSON null object; expected a non-nullable type RestEase.Response<MemberActivityDto>"
+                             )
+                         | jsonNode -> jsonNode)
+
                     return
                         new RestEase.Response<_> (
                             responseString,
@@ -951,6 +1107,15 @@ module PureGymApi =
                         System.Text.Json.Nodes.JsonNode.ParseAsync (responseStream, cancellationToken = ct)
                         |> Async.AwaitTask
 
+                    let jsonNode =
+                        (match jsonNode with
+                         | null ->
+                             raise (
+                                 System.ArgumentNullException
+                                     "Response from server was the JSON null object; expected a non-nullable type Response<MemberActivityDto>"
+                             )
+                         | jsonNode -> jsonNode)
+
                     return
                         new RestEase.Response<_> (
                             responseString,
@@ -987,6 +1152,15 @@ module PureGymApi =
                         System.Text.Json.Nodes.JsonNode.ParseAsync (responseStream, cancellationToken = ct)
                         |> Async.AwaitTask
 
+                    let jsonNode =
+                        (match jsonNode with
+                         | null ->
+                             raise (
+                                 System.ArgumentNullException
+                                     "Response from server was the JSON null object; expected a non-nullable type RestEase.Response<MemberActivityDto>"
+                             )
+                         | jsonNode -> jsonNode)
+
                     return
                         new RestEase.Response<_> (
                             responseString,
@@ -1076,7 +1250,7 @@ module internal ApiWithoutBaseAddress =
                              | v -> v),
                             System.Uri (
                                 "endpoint/{param}"
-                                    .Replace ("{param}", parameter.ToString () |> System.Web.HttpUtility.UrlEncode),
+                                    .Replace ("{param}", parameter.ToString () |> System.Uri.EscapeDataString),
                                 System.UriKind.Relative
                             )
                         )
@@ -1130,7 +1304,7 @@ module ApiWithBasePath =
                             ),
                             System.Uri (
                                 "endpoint/{param}"
-                                    .Replace ("{param}", parameter.ToString () |> System.Web.HttpUtility.UrlEncode),
+                                    .Replace ("{param}", parameter.ToString () |> System.Uri.EscapeDataString),
                                 System.UriKind.Relative
                             )
                         )
@@ -1178,7 +1352,7 @@ module ApiWithBasePathAndAddress =
                             ),
                             System.Uri (
                                 "endpoint/{param}"
-                                    .Replace ("{param}", parameter.ToString () |> System.Web.HttpUtility.UrlEncode),
+                                    .Replace ("{param}", parameter.ToString () |> System.Uri.EscapeDataString),
                                 System.UriKind.Relative
                             )
                         )
@@ -1232,7 +1406,7 @@ module ApiWithAbsoluteBasePath =
                             ),
                             System.Uri (
                                 "endpoint/{param}"
-                                    .Replace ("{param}", parameter.ToString () |> System.Web.HttpUtility.UrlEncode),
+                                    .Replace ("{param}", parameter.ToString () |> System.Uri.EscapeDataString),
                                 System.UriKind.Relative
                             )
                         )
@@ -1280,7 +1454,7 @@ module ApiWithAbsoluteBasePathAndAddress =
                             ),
                             System.Uri (
                                 "endpoint/{param}"
-                                    .Replace ("{param}", parameter.ToString () |> System.Web.HttpUtility.UrlEncode),
+                                    .Replace ("{param}", parameter.ToString () |> System.Uri.EscapeDataString),
                                 System.UriKind.Relative
                             )
                         )
@@ -1334,7 +1508,7 @@ module ApiWithBasePathAndAbsoluteEndpoint =
                             ),
                             System.Uri (
                                 "/endpoint/{param}"
-                                    .Replace ("{param}", parameter.ToString () |> System.Web.HttpUtility.UrlEncode),
+                                    .Replace ("{param}", parameter.ToString () |> System.Uri.EscapeDataString),
                                 System.UriKind.Relative
                             )
                         )
@@ -1382,7 +1556,7 @@ module ApiWithBasePathAndAddressAndAbsoluteEndpoint =
                             ),
                             System.Uri (
                                 "/endpoint/{param}"
-                                    .Replace ("{param}", parameter.ToString () |> System.Web.HttpUtility.UrlEncode),
+                                    .Replace ("{param}", parameter.ToString () |> System.Uri.EscapeDataString),
                                 System.UriKind.Relative
                             )
                         )
@@ -1436,7 +1610,7 @@ module ApiWithAbsoluteBasePathAndAbsoluteEndpoint =
                             ),
                             System.Uri (
                                 "/endpoint/{param}"
-                                    .Replace ("{param}", parameter.ToString () |> System.Web.HttpUtility.UrlEncode),
+                                    .Replace ("{param}", parameter.ToString () |> System.Uri.EscapeDataString),
                                 System.UriKind.Relative
                             )
                         )
@@ -1484,7 +1658,7 @@ module ApiWithAbsoluteBasePathAndAddressAndAbsoluteEndpoint =
                             ),
                             System.Uri (
                                 "/endpoint/{param}"
-                                    .Replace ("{param}", parameter.ToString () |> System.Web.HttpUtility.UrlEncode),
+                                    .Replace ("{param}", parameter.ToString () |> System.Uri.EscapeDataString),
                                 System.UriKind.Relative
                             )
                         )
@@ -1543,7 +1717,7 @@ module ApiWithHeaders =
                              | v -> v),
                             System.Uri (
                                 "endpoint/{param}"
-                                    .Replace ("{param}", parameter.ToString () |> System.Web.HttpUtility.UrlEncode),
+                                    .Replace ("{param}", parameter.ToString () |> System.Uri.EscapeDataString),
                                 System.UriKind.Relative
                             )
                         )
@@ -1606,7 +1780,7 @@ module ApiWithHeaders2 =
                              | v -> v),
                             System.Uri (
                                 "endpoint/{param}"
-                                    .Replace ("{param}", parameter.ToString () |> System.Web.HttpUtility.UrlEncode),
+                                    .Replace ("{param}", parameter.ToString () |> System.Uri.EscapeDataString),
                                 System.UriKind.Relative
                             )
                         )

ConsumePlugin/GeneratedVault.fs

@@ -13,139 +13,147 @@ module JwtVaultAuthResponse =
     /// Parse from a JSON node.
     let jsonParse (node : System.Text.Json.Nodes.JsonNode) : JwtVaultAuthResponse =
         let arg_10 =
-            (match node.["num_uses"] with
-             | null ->
-                 raise (
-                     System.Collections.Generic.KeyNotFoundException (
-                         sprintf "Required key '%s' not found on JSON object" ("num_uses")
-                     )
-                 )
-             | v -> v)
-                .AsValue()
-                .GetValue<System.Int32> ()
+            match node.["num_uses"] |> Option.ofObj with
+            | None ->
+                raise (
+                    System.Collections.Generic.KeyNotFoundException (
+                        sprintf "Required key '%s' not found on JSON object" ("num_uses")
+                    )
+                )
+            | Some node -> node.AsValue().GetValue<System.Int32> ()
 
         let arg_9 =
-            (match node.["orphan"] with
-             | null ->
-                 raise (
-                     System.Collections.Generic.KeyNotFoundException (
-                         sprintf "Required key '%s' not found on JSON object" ("orphan")
-                     )
-                 )
-             | v -> v)
-                .AsValue()
-                .GetValue<System.Boolean> ()
+            match node.["orphan"] |> Option.ofObj with
+            | None ->
+                raise (
+                    System.Collections.Generic.KeyNotFoundException (
+                        sprintf "Required key '%s' not found on JSON object" ("orphan")
+                    )
+                )
+            | Some node -> node.AsValue().GetValue<System.Boolean> ()
 
         let arg_8 =
-            (match node.["entity_id"] with
-             | null ->
-                 raise (
-                     System.Collections.Generic.KeyNotFoundException (
-                         sprintf "Required key '%s' not found on JSON object" ("entity_id")
-                     )
-                 )
-             | v -> v)
-                .AsValue()
-                .GetValue<System.String> ()
+            match node.["entity_id"] |> Option.ofObj with
+            | None ->
+                raise (
+                    System.Collections.Generic.KeyNotFoundException (
+                        sprintf "Required key '%s' not found on JSON object" ("entity_id")
+                    )
+                )
+            | Some node -> node.AsValue().GetValue<System.String> ()
 
         let arg_7 =
-            (match node.["token_type"] with
-             | null ->
-                 raise (
-                     System.Collections.Generic.KeyNotFoundException (
-                         sprintf "Required key '%s' not found on JSON object" ("token_type")
-                     )
-                 )
-             | v -> v)
-                .AsValue()
-                .GetValue<System.String> ()
+            match node.["token_type"] |> Option.ofObj with
+            | None ->
+                raise (
+                    System.Collections.Generic.KeyNotFoundException (
+                        sprintf "Required key '%s' not found on JSON object" ("token_type")
+                    )
+                )
+            | Some node -> node.AsValue().GetValue<System.String> ()
 
         let arg_6 =
-            (match node.["renewable"] with
-             | null ->
-                 raise (
-                     System.Collections.Generic.KeyNotFoundException (
-                         sprintf "Required key '%s' not found on JSON object" ("renewable")
-                     )
-                 )
-             | v -> v)
-                .AsValue()
-                .GetValue<System.Boolean> ()
+            match node.["renewable"] |> Option.ofObj with
+            | None ->
+                raise (
+                    System.Collections.Generic.KeyNotFoundException (
+                        sprintf "Required key '%s' not found on JSON object" ("renewable")
+                    )
+                )
+            | Some node -> node.AsValue().GetValue<System.Boolean> ()
 
         let arg_5 =
-            (match node.["lease_duration"] with
-             | null ->
-                 raise (
-                     System.Collections.Generic.KeyNotFoundException (
-                         sprintf "Required key '%s' not found on JSON object" ("lease_duration")
-                     )
-                 )
-             | v -> v)
-                .AsValue()
-                .GetValue<System.Int32> ()
+            match node.["lease_duration"] |> Option.ofObj with
+            | None ->
+                raise (
+                    System.Collections.Generic.KeyNotFoundException (
+                        sprintf "Required key '%s' not found on JSON object" ("lease_duration")
+                    )
+                )
+            | Some node -> node.AsValue().GetValue<System.Int32> ()
 
         let arg_4 =
-            (match node.["identity_policies"] with
-             | null ->
-                 raise (
-                     System.Collections.Generic.KeyNotFoundException (
-                         sprintf "Required key '%s' not found on JSON object" ("identity_policies")
-                     )
-                 )
-             | v -> v)
-                .AsArray ()
-            |> Seq.map (fun elt -> elt.AsValue().GetValue<System.String> ())
-            |> List.ofSeq
+            match node.["identity_policies"] |> Option.ofObj with
+            | None ->
+                raise (
+                    System.Collections.Generic.KeyNotFoundException (
+                        sprintf "Required key '%s' not found on JSON object" ("identity_policies")
+                    )
+                )
+            | Some node ->
+                node.AsArray ()
+                |> Seq.map (fun elt ->
+                    (match elt with
+                     | null ->
+                         raise (
+                             System.ArgumentNullException
+                                 "Expected element of array (element type string) to be non-null, but found a null element"
+                         )
+                     | elt -> elt.AsValue().GetValue<System.String> ())
+                )
+                |> List.ofSeq
 
         let arg_3 =
-            (match node.["token_policies"] with
-             | null ->
-                 raise (
-                     System.Collections.Generic.KeyNotFoundException (
-                         sprintf "Required key '%s' not found on JSON object" ("token_policies")
-                     )
-                 )
-             | v -> v)
-                .AsArray ()
-            |> Seq.map (fun elt -> elt.AsValue().GetValue<System.String> ())
-            |> List.ofSeq
+            match node.["token_policies"] |> Option.ofObj with
+            | None ->
+                raise (
+                    System.Collections.Generic.KeyNotFoundException (
+                        sprintf "Required key '%s' not found on JSON object" ("token_policies")
+                    )
+                )
+            | Some node ->
+                node.AsArray ()
+                |> Seq.map (fun elt ->
+                    (match elt with
+                     | null ->
+                         raise (
+                             System.ArgumentNullException
+                                 "Expected element of array (element type string) to be non-null, but found a null element"
+                         )
+                     | elt -> elt.AsValue().GetValue<System.String> ())
+                )
+                |> List.ofSeq
 
         let arg_2 =
-            (match node.["policies"] with
-             | null ->
-                 raise (
-                     System.Collections.Generic.KeyNotFoundException (
-                         sprintf "Required key '%s' not found on JSON object" ("policies")
-                     )
-                 )
-             | v -> v)
-                .AsArray ()
-            |> Seq.map (fun elt -> elt.AsValue().GetValue<System.String> ())
-            |> List.ofSeq
+            match node.["policies"] |> Option.ofObj with
+            | None ->
+                raise (
+                    System.Collections.Generic.KeyNotFoundException (
+                        sprintf "Required key '%s' not found on JSON object" ("policies")
+                    )
+                )
+            | Some node ->
+                node.AsArray ()
+                |> Seq.map (fun elt ->
+                    (match elt with
+                     | null ->
+                         raise (
+                             System.ArgumentNullException
+                                 "Expected element of array (element type string) to be non-null, but found a null element"
+                         )
+                     | elt -> elt.AsValue().GetValue<System.String> ())
+                )
+                |> List.ofSeq
 
         let arg_1 =
-            (match node.["accessor"] with
-             | null ->
-                 raise (
-                     System.Collections.Generic.KeyNotFoundException (
-                         sprintf "Required key '%s' not found on JSON object" ("accessor")
-                     )
-                 )
-             | v -> v)
-                .AsValue()
-                .GetValue<System.String> ()
+            match node.["accessor"] |> Option.ofObj with
+            | None ->
+                raise (
+                    System.Collections.Generic.KeyNotFoundException (
+                        sprintf "Required key '%s' not found on JSON object" ("accessor")
+                    )
+                )
+            | Some node -> node.AsValue().GetValue<System.String> ()
 
         let arg_0 =
-            (match node.["client_token"] with
-             | null ->
-                 raise (
-                     System.Collections.Generic.KeyNotFoundException (
-                         sprintf "Required key '%s' not found on JSON object" ("client_token")
-                     )
-                 )
-             | v -> v)
-                .AsValue()
-                .GetValue<System.String> ()
+            match node.["client_token"] |> Option.ofObj with
+            | None ->
+                raise (
+                    System.Collections.Generic.KeyNotFoundException (
+                        sprintf "Required key '%s' not found on JSON object" ("client_token")
+                    )
+                )
+            | Some node -> node.AsValue().GetValue<System.String> ()
 
         {
             ClientToken = arg_0
@@ -168,64 +176,54 @@ module JwtVaultResponse =
     /// Parse from a JSON node.
     let jsonParse (node : System.Text.Json.Nodes.JsonNode) : JwtVaultResponse =
         let arg_4 =
-            JwtVaultAuthResponse.jsonParse (
-                match node.["auth"] with
-                | null ->
-                    raise (
-                        System.Collections.Generic.KeyNotFoundException (
-                            sprintf "Required key '%s' not found on JSON object" ("auth")
-                        )
+            match node.["auth"] |> Option.ofObj with
+            | None ->
+                raise (
+                    System.Collections.Generic.KeyNotFoundException (
+                        sprintf "Required key '%s' not found on JSON object" ("auth")
                     )
-                | v -> v
-            )
+                )
+            | Some node -> JwtVaultAuthResponse.jsonParse node
 
         let arg_3 =
-            (match node.["lease_duration"] with
-             | null ->
-                 raise (
-                     System.Collections.Generic.KeyNotFoundException (
-                         sprintf "Required key '%s' not found on JSON object" ("lease_duration")
-                     )
-                 )
-             | v -> v)
-                .AsValue()
-                .GetValue<System.Int32> ()
+            match node.["lease_duration"] |> Option.ofObj with
+            | None ->
+                raise (
+                    System.Collections.Generic.KeyNotFoundException (
+                        sprintf "Required key '%s' not found on JSON object" ("lease_duration")
+                    )
+                )
+            | Some node -> node.AsValue().GetValue<System.Int32> ()
 
         let arg_2 =
-            (match node.["renewable"] with
-             | null ->
-                 raise (
-                     System.Collections.Generic.KeyNotFoundException (
-                         sprintf "Required key '%s' not found on JSON object" ("renewable")
-                     )
-                 )
-             | v -> v)
-                .AsValue()
-                .GetValue<System.Boolean> ()
+            match node.["renewable"] |> Option.ofObj with
+            | None ->
+                raise (
+                    System.Collections.Generic.KeyNotFoundException (
+                        sprintf "Required key '%s' not found on JSON object" ("renewable")
+                    )
+                )
+            | Some node -> node.AsValue().GetValue<System.Boolean> ()
 
         let arg_1 =
-            (match node.["lease_id"] with
-             | null ->
-                 raise (
-                     System.Collections.Generic.KeyNotFoundException (
-                         sprintf "Required key '%s' not found on JSON object" ("lease_id")
-                     )
-                 )
-             | v -> v)
-                .AsValue()
-                .GetValue<System.String> ()
+            match node.["lease_id"] |> Option.ofObj with
+            | None ->
+                raise (
+                    System.Collections.Generic.KeyNotFoundException (
+                        sprintf "Required key '%s' not found on JSON object" ("lease_id")
+                    )
+                )
+            | Some node -> node.AsValue().GetValue<System.String> ()
 
         let arg_0 =
-            (match node.["request_id"] with
-             | null ->
-                 raise (
-                     System.Collections.Generic.KeyNotFoundException (
-                         sprintf "Required key '%s' not found on JSON object" ("request_id")
-                     )
-                 )
-             | v -> v)
-                .AsValue()
-                .GetValue<System.String> ()
+            match node.["request_id"] |> Option.ofObj with
+            | None ->
+                raise (
+                    System.Collections.Generic.KeyNotFoundException (
+                        sprintf "Required key '%s' not found on JSON object" ("request_id")
+                    )
+                )
+            | Some node -> node.AsValue().GetValue<System.String> ()
 
         {
             RequestId = arg_0
@@ -242,190 +240,246 @@ module JwtSecretResponse =
     /// Parse from a JSON node.
     let jsonParse (node : System.Text.Json.Nodes.JsonNode) : JwtSecretResponse =
         let arg_11 =
-            (match node.["data8"] with
-             | null ->
-                 raise (
-                     System.Collections.Generic.KeyNotFoundException (
-                         sprintf "Required key '%s' not found on JSON object" ("data8")
-                     )
-                 )
-             | v -> v)
-                .AsObject ()
-            |> Seq.map (fun kvp ->
-                let key = (kvp.Key)
-                let value = (kvp.Value).AsValue().GetValue<string> () |> System.Uri
-                key, value
-            )
-            |> Seq.map System.Collections.Generic.KeyValuePair
-            |> System.Collections.Generic.Dictionary
+            match node.["data8"] |> Option.ofObj with
+            | None ->
+                raise (
+                    System.Collections.Generic.KeyNotFoundException (
+                        sprintf "Required key '%s' not found on JSON object" ("data8")
+                    )
+                )
+            | Some node ->
+                node.AsObject ()
+                |> Seq.map (fun kvp ->
+                    let key = (kvp.Key)
+                    let value = kvp.Value
+
+                    key,
+                    (match value with
+                     | null ->
+                         raise (
+                             System.ArgumentNullException
+                                 "Expected dictionary value of type URI to be non-null, but it was null"
+                         )
+                     | value -> value.AsValue().GetValue<string> () |> System.Uri)
+                )
+                |> Seq.map System.Collections.Generic.KeyValuePair
+                |> System.Collections.Generic.Dictionary
 
         let arg_10 =
-            (match node.["data7"] with
-             | null ->
-                 raise (
-                     System.Collections.Generic.KeyNotFoundException (
-                         sprintf "Required key '%s' not found on JSON object" ("data7")
-                     )
-                 )
-             | v -> v)
-                .AsObject ()
-            |> Seq.map (fun kvp ->
-                let key = (kvp.Key)
-                let value = (kvp.Value).AsValue().GetValue<System.Int32> ()
-                key, value
-            )
-            |> Map.ofSeq
+            match node.["data7"] |> Option.ofObj with
+            | None ->
+                raise (
+                    System.Collections.Generic.KeyNotFoundException (
+                        sprintf "Required key '%s' not found on JSON object" ("data7")
+                    )
+                )
+            | Some node ->
+                node.AsObject ()
+                |> Seq.map (fun kvp ->
+                    let key = (kvp.Key)
+                    let value = kvp.Value
+
+                    key,
+                    (match value with
+                     | null ->
+                         raise (
+                             System.ArgumentNullException
+                                 "Expected dictionary value of type int32 to be non-null, but it was null"
+                         )
+                     | value -> value.AsValue().GetValue<System.Int32> ())
+                )
+                |> Map.ofSeq
 
         let arg_9 =
-            (match node.["data6"] with
-             | null ->
-                 raise (
-                     System.Collections.Generic.KeyNotFoundException (
-                         sprintf "Required key '%s' not found on JSON object" ("data6")
-                     )
-                 )
-             | v -> v)
-                .AsObject ()
-            |> Seq.map (fun kvp ->
-                let key = (kvp.Key) |> System.Uri
-                let value = (kvp.Value).AsValue().GetValue<System.String> ()
-                key, value
-            )
-            |> dict
+            match node.["data6"] |> Option.ofObj with
+            | None ->
+                raise (
+                    System.Collections.Generic.KeyNotFoundException (
+                        sprintf "Required key '%s' not found on JSON object" ("data6")
+                    )
+                )
+            | Some node ->
+                node.AsObject ()
+                |> Seq.map (fun kvp ->
+                    let key = (kvp.Key) |> System.Uri
+                    let value = kvp.Value
+
+                    key,
+                    (match value with
+                     | null ->
+                         raise (
+                             System.ArgumentNullException
+                                 "Expected dictionary value of type string to be non-null, but it was null"
+                         )
+                     | value -> value.AsValue().GetValue<System.String> ())
+                )
+                |> dict
 
         let arg_8 =
-            (match node.["data5"] with
-             | null ->
-                 raise (
-                     System.Collections.Generic.KeyNotFoundException (
-                         sprintf "Required key '%s' not found on JSON object" ("data5")
-                     )
-                 )
-             | v -> v)
-                .AsObject ()
-            |> Seq.map (fun kvp ->
-                let key = (kvp.Key) |> System.Uri
-                let value = (kvp.Value).AsValue().GetValue<System.String> ()
-                key, value
-            )
-            |> readOnlyDict
+            match node.["data5"] |> Option.ofObj with
+            | None ->
+                raise (
+                    System.Collections.Generic.KeyNotFoundException (
+                        sprintf "Required key '%s' not found on JSON object" ("data5")
+                    )
+                )
+            | Some node ->
+                node.AsObject ()
+                |> Seq.map (fun kvp ->
+                    let key = (kvp.Key) |> System.Uri
+                    let value = kvp.Value
+
+                    key,
+                    (match value with
+                     | null ->
+                         raise (
+                             System.ArgumentNullException
+                                 "Expected dictionary value of type string to be non-null, but it was null"
+                         )
+                     | value -> value.AsValue().GetValue<System.String> ())
+                )
+                |> readOnlyDict
 
         let arg_7 =
-            (match node.["data4"] with
-             | null ->
-                 raise (
-                     System.Collections.Generic.KeyNotFoundException (
-                         sprintf "Required key '%s' not found on JSON object" ("data4")
-                     )
-                 )
-             | v -> v)
-                .AsObject ()
-            |> Seq.map (fun kvp ->
-                let key = (kvp.Key)
-                let value = (kvp.Value).AsValue().GetValue<System.String> ()
-                key, value
-            )
-            |> Map.ofSeq
+            match node.["data4"] |> Option.ofObj with
+            | None ->
+                raise (
+                    System.Collections.Generic.KeyNotFoundException (
+                        sprintf "Required key '%s' not found on JSON object" ("data4")
+                    )
+                )
+            | Some node ->
+                node.AsObject ()
+                |> Seq.map (fun kvp ->
+                    let key = (kvp.Key)
+                    let value = kvp.Value
+
+                    key,
+                    (match value with
+                     | null ->
+                         raise (
+                             System.ArgumentNullException
+                                 "Expected dictionary value of type string to be non-null, but it was null"
+                         )
+                     | value -> value.AsValue().GetValue<System.String> ())
+                )
+                |> Map.ofSeq
 
         let arg_6 =
-            (match node.["data3"] with
-             | null ->
-                 raise (
-                     System.Collections.Generic.KeyNotFoundException (
-                         sprintf "Required key '%s' not found on JSON object" ("data3")
-                     )
-                 )
-             | v -> v)
-                .AsObject ()
-            |> Seq.map (fun kvp ->
-                let key = (kvp.Key)
-                let value = (kvp.Value).AsValue().GetValue<System.String> ()
-                key, value
-            )
-            |> Seq.map System.Collections.Generic.KeyValuePair
-            |> System.Collections.Generic.Dictionary
+            match node.["data3"] |> Option.ofObj with
+            | None ->
+                raise (
+                    System.Collections.Generic.KeyNotFoundException (
+                        sprintf "Required key '%s' not found on JSON object" ("data3")
+                    )
+                )
+            | Some node ->
+                node.AsObject ()
+                |> Seq.map (fun kvp ->
+                    let key = (kvp.Key)
+                    let value = kvp.Value
+
+                    key,
+                    (match value with
+                     | null ->
+                         raise (
+                             System.ArgumentNullException
+                                 "Expected dictionary value of type string to be non-null, but it was null"
+                         )
+                     | value -> value.AsValue().GetValue<System.String> ())
+                )
+                |> Seq.map System.Collections.Generic.KeyValuePair
+                |> System.Collections.Generic.Dictionary
 
         let arg_5 =
-            (match node.["data2"] with
-             | null ->
-                 raise (
-                     System.Collections.Generic.KeyNotFoundException (
-                         sprintf "Required key '%s' not found on JSON object" ("data2")
-                     )
-                 )
-             | v -> v)
-                .AsObject ()
-            |> Seq.map (fun kvp ->
-                let key = (kvp.Key)
-                let value = (kvp.Value).AsValue().GetValue<System.String> ()
-                key, value
-            )
-            |> dict
+            match node.["data2"] |> Option.ofObj with
+            | None ->
+                raise (
+                    System.Collections.Generic.KeyNotFoundException (
+                        sprintf "Required key '%s' not found on JSON object" ("data2")
+                    )
+                )
+            | Some node ->
+                node.AsObject ()
+                |> Seq.map (fun kvp ->
+                    let key = (kvp.Key)
+                    let value = kvp.Value
+
+                    key,
+                    (match value with
+                     | null ->
+                         raise (
+                             System.ArgumentNullException
+                                 "Expected dictionary value of type string to be non-null, but it was null"
+                         )
+                     | value -> value.AsValue().GetValue<System.String> ())
+                )
+                |> dict
 
         let arg_4 =
-            (match node.["data"] with
-             | null ->
-                 raise (
-                     System.Collections.Generic.KeyNotFoundException (
-                         sprintf "Required key '%s' not found on JSON object" ("data")
-                     )
-                 )
-             | v -> v)
-                .AsObject ()
-            |> Seq.map (fun kvp ->
-                let key = (kvp.Key)
-                let value = (kvp.Value).AsValue().GetValue<System.String> ()
-                key, value
-            )
-            |> readOnlyDict
+            match node.["data"] |> Option.ofObj with
+            | None ->
+                raise (
+                    System.Collections.Generic.KeyNotFoundException (
+                        sprintf "Required key '%s' not found on JSON object" ("data")
+                    )
+                )
+            | Some node ->
+                node.AsObject ()
+                |> Seq.map (fun kvp ->
+                    let key = (kvp.Key)
+                    let value = kvp.Value
+
+                    key,
+                    (match value with
+                     | null ->
+                         raise (
+                             System.ArgumentNullException
+                                 "Expected dictionary value of type string to be non-null, but it was null"
+                         )
+                     | value -> value.AsValue().GetValue<System.String> ())
+                )
+                |> readOnlyDict
 
         let arg_3 =
-            (match node.["lease_duration"] with
-             | null ->
-                 raise (
-                     System.Collections.Generic.KeyNotFoundException (
-                         sprintf "Required key '%s' not found on JSON object" ("lease_duration")
-                     )
-                 )
-             | v -> v)
-                .AsValue()
-                .GetValue<System.Int32> ()
+            match node.["lease_duration"] |> Option.ofObj with
+            | None ->
+                raise (
+                    System.Collections.Generic.KeyNotFoundException (
+                        sprintf "Required key '%s' not found on JSON object" ("lease_duration")
+                    )
+                )
+            | Some node -> node.AsValue().GetValue<System.Int32> ()
 
         let arg_2 =
-            (match node.["renewable"] with
-             | null ->
-                 raise (
-                     System.Collections.Generic.KeyNotFoundException (
-                         sprintf "Required key '%s' not found on JSON object" ("renewable")
-                     )
-                 )
-             | v -> v)
-                .AsValue()
-                .GetValue<System.Boolean> ()
+            match node.["renewable"] |> Option.ofObj with
+            | None ->
+                raise (
+                    System.Collections.Generic.KeyNotFoundException (
+                        sprintf "Required key '%s' not found on JSON object" ("renewable")
+                    )
+                )
+            | Some node -> node.AsValue().GetValue<System.Boolean> ()
 
         let arg_1 =
-            (match node.["lease_id"] with
-             | null ->
-                 raise (
-                     System.Collections.Generic.KeyNotFoundException (
-                         sprintf "Required key '%s' not found on JSON object" ("lease_id")
-                     )
-                 )
-             | v -> v)
-                .AsValue()
-                .GetValue<System.String> ()
+            match node.["lease_id"] |> Option.ofObj with
+            | None ->
+                raise (
+                    System.Collections.Generic.KeyNotFoundException (
+                        sprintf "Required key '%s' not found on JSON object" ("lease_id")
+                    )
+                )
+            | Some node -> node.AsValue().GetValue<System.String> ()
 
         let arg_0 =
-            (match node.["request_id"] with
-             | null ->
-                 raise (
-                     System.Collections.Generic.KeyNotFoundException (
-                         sprintf "Required key '%s' not found on JSON object" ("request_id")
-                     )
-                 )
-             | v -> v)
-                .AsValue()
-                .GetValue<System.String> ()
+            match node.["request_id"] |> Option.ofObj with
+            | None ->
+                raise (
+                    System.Collections.Generic.KeyNotFoundException (
+                        sprintf "Required key '%s' not found on JSON object" ("request_id")
+                    )
+                )
+            | Some node -> node.AsValue().GetValue<System.String> ()
 
         {
             RequestId = arg_0
@@ -476,11 +530,8 @@ module VaultClient =
                              | v -> v),
                             System.Uri (
                                 "v1/{mountPoint}/{path}"
-                                    .Replace("{path}", path.ToString () |> System.Web.HttpUtility.UrlEncode)
-                                    .Replace (
-                                        "{mountPoint}",
-                                        mountPoint.ToString () |> System.Web.HttpUtility.UrlEncode
-                                    ),
+                                    .Replace("{path}", path.ToString () |> System.Uri.EscapeDataString)
+                                    .Replace ("{mountPoint}", mountPoint.ToString () |> System.Uri.EscapeDataString),
                                 System.UriKind.Relative
                             )
                         )
@@ -499,6 +550,15 @@ module VaultClient =
                         System.Text.Json.Nodes.JsonNode.ParseAsync (responseStream, cancellationToken = ct)
                         |> Async.AwaitTask
 
+                    let jsonNode =
+                        (match jsonNode with
+                         | null ->
+                             raise (
+                                 System.ArgumentNullException
+                                     "Response from server was the JSON null object; expected a non-nullable type JwtSecretResponse"
+                             )
+                         | jsonNode -> jsonNode)
+
                     return JwtSecretResponse.jsonParse jsonNode
                 }
                 |> (fun a -> Async.StartAsTask (a, ?cancellationToken = ct))
@@ -535,6 +595,15 @@ module VaultClient =
                         System.Text.Json.Nodes.JsonNode.ParseAsync (responseStream, cancellationToken = ct)
                         |> Async.AwaitTask
 
+                    let jsonNode =
+                        (match jsonNode with
+                         | null ->
+                             raise (
+                                 System.ArgumentNullException
+                                     "Response from server was the JSON null object; expected a non-nullable type JwtVaultResponse"
+                             )
+                         | jsonNode -> jsonNode)
+
                     return JwtVaultResponse.jsonParse jsonNode
                 }
                 |> (fun a -> Async.StartAsTask (a, ?cancellationToken = ct))
@@ -573,11 +642,8 @@ module VaultClientNonExtensionMethod =
                              | v -> v),
                             System.Uri (
                                 "v1/{mountPoint}/{path}"
-                                    .Replace("{path}", path.ToString () |> System.Web.HttpUtility.UrlEncode)
-                                    .Replace (
-                                        "{mountPoint}",
-                                        mountPoint.ToString () |> System.Web.HttpUtility.UrlEncode
-                                    ),
+                                    .Replace("{path}", path.ToString () |> System.Uri.EscapeDataString)
+                                    .Replace ("{mountPoint}", mountPoint.ToString () |> System.Uri.EscapeDataString),
                                 System.UriKind.Relative
                             )
                         )
@@ -596,6 +662,15 @@ module VaultClientNonExtensionMethod =
                         System.Text.Json.Nodes.JsonNode.ParseAsync (responseStream, cancellationToken = ct)
                         |> Async.AwaitTask
 
+                    let jsonNode =
+                        (match jsonNode with
+                         | null ->
+                             raise (
+                                 System.ArgumentNullException
+                                     "Response from server was the JSON null object; expected a non-nullable type JwtSecretResponse"
+                             )
+                         | jsonNode -> jsonNode)
+
                     return JwtSecretResponse.jsonParse jsonNode
                 }
                 |> (fun a -> Async.StartAsTask (a, ?cancellationToken = ct))
@@ -632,6 +707,15 @@ module VaultClientNonExtensionMethod =
                         System.Text.Json.Nodes.JsonNode.ParseAsync (responseStream, cancellationToken = ct)
                         |> Async.AwaitTask
 
+                    let jsonNode =
+                        (match jsonNode with
+                         | null ->
+                             raise (
+                                 System.ArgumentNullException
+                                     "Response from server was the JSON null object; expected a non-nullable type JwtVaultResponse"
+                             )
+                         | jsonNode -> jsonNode)
+
                     return JwtVaultResponse.jsonParse jsonNode
                 }
                 |> (fun a -> Async.StartAsTask (a, ?cancellationToken = ct))
@@ -673,11 +757,8 @@ module VaultClientExtensionMethodHttpClientExtension =
                                  | v -> v),
                                 System.Uri (
                                     "v1/{mountPoint}/{path}"
-                                        .Replace("{path}", path.ToString () |> System.Web.HttpUtility.UrlEncode)
-                                        .Replace (
-                                            "{mountPoint}",
-                                            mountPoint.ToString () |> System.Web.HttpUtility.UrlEncode
-                                        ),
+                                        .Replace("{path}", path.ToString () |> System.Uri.EscapeDataString)
+                                        .Replace ("{mountPoint}", mountPoint.ToString () |> System.Uri.EscapeDataString),
                                     System.UriKind.Relative
                                 )
                             )
@@ -696,6 +777,15 @@ module VaultClientExtensionMethodHttpClientExtension =
                             System.Text.Json.Nodes.JsonNode.ParseAsync (responseStream, cancellationToken = ct)
                             |> Async.AwaitTask
 
+                        let jsonNode =
+                            (match jsonNode with
+                             | null ->
+                                 raise (
+                                     System.ArgumentNullException
+                                         "Response from server was the JSON null object; expected a non-nullable type JwtSecretResponse"
+                                 )
+                             | jsonNode -> jsonNode)
+
                         return JwtSecretResponse.jsonParse jsonNode
                     }
                     |> (fun a -> Async.StartAsTask (a, ?cancellationToken = ct))
@@ -732,6 +822,15 @@ module VaultClientExtensionMethodHttpClientExtension =
                             System.Text.Json.Nodes.JsonNode.ParseAsync (responseStream, cancellationToken = ct)
                             |> Async.AwaitTask
 
+                        let jsonNode =
+                            (match jsonNode with
+                             | null ->
+                                 raise (
+                                     System.ArgumentNullException
+                                         "Response from server was the JSON null object; expected a non-nullable type JwtVaultResponse"
+                                 )
+                             | jsonNode -> jsonNode)
+
                         return JwtVaultResponse.jsonParse jsonNode
                     }
                     |> (fun a -> Async.StartAsTask (a, ?cancellationToken = ct))

ConsumePlugin/ListCata.fs

@@ -31,7 +31,7 @@ module MyListCata =
     [<RequireQualifiedAccess>]
     type private Instruction<'a> =
         | Process__MyList of MyList<'a>
-        | MyList_Cons of 'a
+        | MyList_Cons of head : 'a
 
     let private loop (cata : MyListCata<'a, 'MyList>) (instructions : ResizeArray<Instruction<'a>>) =
         let myListStack = ResizeArray<'MyList> ()

ConsumePlugin/MockExample.fs

@@ -48,3 +48,10 @@ type TypeWithInterface =
     inherit IDisposable
     abstract Mem1 : string option -> string[] Async
     abstract Mem2 : unit -> string[] Async
+
+[<GenerateMock>]
+type TypeWithProperties =
+    inherit IDisposable
+    abstract Mem1 : string option -> string[] Async
+    abstract Prop1 : int
+    abstract Prop2 : unit Async

ConsumePlugin/MockExampleNoAttributes.fs

@@ -0,0 +1,41 @@
+namespace SomeNamespace
+
+open System
+
+type IPublicTypeNoAttr =
+    abstract Mem1 : string * int -> string list
+    abstract Mem2 : string -> int
+    abstract Mem3 : x : int * ?ct : System.Threading.CancellationToken -> string
+
+type IPublicTypeInternalFalseNoAttr =
+    abstract Mem1 : string * int -> string list
+    abstract Mem2 : string -> int
+    abstract Mem3 : x : int * ?ct : System.Threading.CancellationToken -> string
+
+type internal InternalTypeNoAttr =
+    abstract Mem1 : string * int -> unit
+    abstract Mem2 : string -> int
+
+type private PrivateTypeNoAttr =
+    abstract Mem1 : string * int -> unit
+    abstract Mem2 : string -> int
+
+type private PrivateTypeInternalFalseNoAttr =
+    abstract Mem1 : string * int -> unit
+    abstract Mem2 : string -> int
+
+type VeryPublicTypeNoAttr<'a, 'b> =
+    abstract Mem1 : 'a -> 'b
+
+type CurriedNoAttr<'a> =
+    abstract Mem1 : int -> 'a -> string
+    abstract Mem2 : int * string -> 'a -> string
+    abstract Mem3 : (int * string) -> 'a -> string
+    abstract Mem4 : (int * string) -> ('a * int) -> string
+    abstract Mem5 : x : int * string -> ('a * int) -> string
+    abstract Mem6 : int * string -> y : 'a * int -> string
+
+type TypeWithInterfaceNoAttr =
+    inherit IDisposable
+    abstract Mem1 : string option -> string[] Async
+    abstract Mem2 : unit -> string[] Async

Directory.Build.props

@@ -10,7 +10,7 @@
     <WarnOn>FS3388,FS3559</WarnOn>
   </PropertyGroup>
   <ItemGroup>
-    <PackageReference Include="Nerdbank.GitVersioning" Version="3.6.143" PrivateAssets="all"/>
+    <PackageReference Include="Nerdbank.GitVersioning" Version="3.8.38-alpha" PrivateAssets="all"/>
     <SourceLinkGitHubHost Include="github.com" ContentUrl="https://raw.githubusercontent.com"/>
   </ItemGroup>
   <PropertyGroup Condition="'$(GITHUB_ACTION)' != ''">

README.md

@@ -604,6 +604,36 @@ For example, this specifies that Myriad is to use the contents of `Client.fs` to
 </ItemGroup>
 ```
 
+## Alternative use without the attributes
+
+You can avoid taking a reference on the `WoofWare.Myriad.Plugins.Attributes` assembly, instead putting all the configuration into the project file.
+This is implemented for everything except the SwaggerClientGenerator.
+
+```xml
+<Project>
+  <ItemGroup>
+    <Compile Include="Client.fs" />
+    <Compile Include="GeneratedClient.fs">
+        <MyriadFile>Client.fs</MyriadFile>
+        <MyriadParams>
+          <MyTypeName1>GenerateMock(false)!JsonParse</MyTypeName1>
+          <SomeOtherTypeName>GenerateMock</SomeOtherTypeName>
+        </MyriadParams>
+    </Compile>
+  </ItemGroup>
+  <ItemGroup>
+    <PackageReference Include="WoofWare.Myriad.Plugins" Version="$(WoofWareMyriadPluginVersion)" PrivateAssets="all" />
+    <PackageReference Include="Myriad.Sdk" Version="0.8.3" PrivateAssets="all" />
+  </ItemGroup>
+</Project>
+```
+
+That is, you specify a `!`-delimited list of the attributes you *would* apply to the type.
+Supply "arguments" to the attribute name in the project file as you would to the attribute itself.
+
+(Yes, this is indeed incredibly cumbersome, and you're not interested in the reasons it's all so mad!
+I'm hopefully going to get round to writing a more powerful source generation system which won't have these limitations.)
+
 ### Myriad Gotchas
 
 * MsBuild doesn't always realise that it needs to invoke Myriad during rebuild.

WoofWare.Myriad.Plugins.Attributes/ArgParserAttributes.fs

@@ -26,6 +26,11 @@ type ArgParserAttribute (isExtensionMethod : bool) =
 /// an argument which looks like a flag but which we don't recognise.)
 /// We will still interpret `--help` as requesting help, unless it comes after
 /// a standalone `--` separator.
+///
+/// If the type of the PositionalArgs field is `Choice<'a, 'a>`, then we will
+/// tell you whether each arg came before or after a standalone `--` separator.
+/// For example, `MyApp foo bar -- baz` with PositionalArgs of `Choice<string, string>`
+/// would yield `Choice1Of2 foo, Choice1Of2 bar, Choice2Of2 baz`.
 type PositionalArgsAttribute (includeFlagLike : bool) =
     inherit Attribute ()
 

WoofWare.Myriad.Plugins.Attributes/Test/WoofWare.Myriad.Plugins.Attributes.Test.fsproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
     <PropertyGroup>
-      <TargetFramework>net8.0</TargetFramework>
+      <TargetFramework>net9.0</TargetFramework>
 
       <IsPackable>false</IsPackable>
       <IsTestProject>true</IsTestProject>
@@ -17,10 +17,10 @@
     </ItemGroup>
 
     <ItemGroup>
-        <PackageReference Include="ApiSurface" Version="4.1.5" />
-        <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.11.1"/>
-        <PackageReference Include="NUnit" Version="4.2.2"/>
-        <PackageReference Include="NUnit3TestAdapter" Version="4.6.0"/>
+        <PackageReference Include="ApiSurface" Version="4.1.20" />
+        <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.13.0"/>
+        <PackageReference Include="NUnit" Version="4.3.2"/>
+        <PackageReference Include="NUnit3TestAdapter" Version="5.0.0"/>
     </ItemGroup>
 
     <ItemGroup>

WoofWare.Myriad.Plugins.Test/TestArgParser/TestArgParser.fs

@@ -68,7 +68,7 @@ module TestArgParser =
 
         let getEnvVar (_ : string) =
             Interlocked.Increment envCalls |> ignore<int>
-            ""
+            None
 
         let args = [ "--foo=3" ; "--non-existent" ; "--bar=4" ; "--baz=true" ]
 
@@ -91,7 +91,7 @@ module TestArgParser =
 
         let getEnvVar (_ : string) =
             Interlocked.Increment envCalls |> ignore<int>
-            ""
+            None
 
         let property (args : (int * bool) list) (afterDoubleDash : int list option) =
             let flatArgs =
@@ -127,7 +127,7 @@ module TestArgParser =
 
         let getEnvVar (_ : string) =
             Interlocked.Increment envCalls |> ignore<int>
-            ""
+            None
 
         let args = [ "--foo=3" ; "--rest" ; "7" ; "--bar=4" ; "--baz=true" ; "--rest=8" ]
 
@@ -150,7 +150,7 @@ module TestArgParser =
 
         let getEnvVar (_ : string) =
             Interlocked.Increment envCalls |> ignore<int>
-            ""
+            None
 
         let args = [ "--foo=3" ; "--foo" ; "9" ; "--bar=4" ; "--baz=true" ; "--baz=false" ]
 
@@ -171,7 +171,7 @@ Argument '--baz' was supplied multiple times: True and false"""
 
         let getEnvVar (_ : string) =
             Interlocked.Increment envCalls |> ignore<int>
-            ""
+            None
 
         let args = [ "--" ; "--foo=3" ; "--bar=4" ; "--baz=true" ]
 
@@ -191,7 +191,7 @@ Required argument '--baz' received no value"""
     let ``Help text`` () =
         let getEnvVar (s : string) =
             s |> shouldEqual "CONSUMEPLUGIN_THINGS"
-            "hi!"
+            Some "hi!"
 
         let exc =
             Assert.Throws<exn> (fun () -> Basic.parse' getEnvVar [ "--help" ] |> ignore<Basic>)
@@ -210,7 +210,7 @@ Required argument '--baz' received no value"""
 
         let getEnvVar (_ : string) =
             Interlocked.Increment envVars |> ignore<int>
-            ""
+            None
 
         let exc =
             Assert.Throws<exn> (fun () -> LoadsOfTypes.parse' getEnvVar [ "--help" ] |> ignore<LoadsOfTypes>)
@@ -236,7 +236,7 @@ Required argument '--baz' received no value"""
     let ``Default values`` () =
         let getEnvVar (s : string) =
             s |> shouldEqual "CONSUMEPLUGIN_THINGS"
-            "hi!"
+            Some "hi!"
 
         let args =
             [
@@ -264,7 +264,7 @@ Required argument '--baz' received no value"""
 
         let getEnvVar (_ : string) =
             Interlocked.Increment count |> ignore<int>
-            ""
+            None
 
         let exc =
             Assert.Throws<exn> (fun () -> DatesAndTimes.parse' getEnvVar [ "--help" ] |> ignore<DatesAndTimes>)
@@ -285,7 +285,7 @@ Required argument '--baz' received no value"""
 
         let getEnvVar (_ : string) =
             Interlocked.Increment count |> ignore<int>
-            ""
+            None
 
         let parsed =
             DatesAndTimes.parse'
@@ -448,7 +448,7 @@ Required argument '--exact' received no value"""
     let ``Bool env vars can be populated`` (envValue : string, boolValue : bool) =
         let getEnvVar (s : string) =
             s |> shouldEqual "CONSUMEPLUGIN_THINGS"
-            envValue
+            Some envValue
 
         ContainsBoolEnvVar.parse' getEnvVar []
         |> shouldEqual
@@ -470,7 +470,7 @@ Required argument '--exact' received no value"""
     let ``Flag DUs can be parsed from env var`` (envValue : string, boolValue : bool) =
         let getEnvVar (s : string) =
             s |> shouldEqual "CONSUMEPLUGIN_THINGS"
-            envValue
+            Some envValue
 
         let boolValue = if boolValue then DryRunMode.Dry else DryRunMode.Wet
 

WoofWare.Myriad.Plugins.Test/TestHttpClient/TestPathParam.fs

@@ -33,4 +33,4 @@ module TestPathParam =
         let api = PureGymApi.make client
 
         api.GetPathParam("hello/world?(hi)").Result
-        |> shouldEqual "hello%2fworld%3f(hi)"
+        |> shouldEqual "hello%2Fworld%3F%28hi%29"

WoofWare.Myriad.Plugins.Test/TestJsonSerialize/TestJsonSerde.fs

@@ -3,7 +3,7 @@ namespace WoofWare.Myriad.Plugins.Test
 open System
 open System.Collections.Generic
 open System.Text.Json.Nodes
-open FsCheck.Random
+open FsCheck.FSharp
 open Microsoft.FSharp.Reflection
 open NUnit.Framework
 open FsCheck
@@ -15,21 +15,21 @@ module TestJsonSerde =
 
     let uriGen : Gen<Uri> =
         gen {
-            let! suffix = Arb.generate<int>
+            let! suffix = ArbMap.generate<int> ArbMap.defaults
             return Uri $"https://example.com/%i{suffix}"
         }
 
     let rec innerGen (count : int) : Gen<InnerTypeWithBoth> =
         gen {
-            let! guid = Arb.generate<Guid>
-            let! mapKeys = Gen.listOf Arb.generate<NonNull<string>>
+            let! guid = ArbMap.generate<Guid> ArbMap.defaults
+            let! mapKeys = Gen.listOf (ArbMap.generate<NonNull<string>> ArbMap.defaults)
             let mapKeys = mapKeys |> List.map _.Get |> List.distinct
             let! mapValues = Gen.listOfLength mapKeys.Length uriGen
             let map = List.zip mapKeys mapValues |> Map.ofList
 
             let! concreteDictKeys =
                 if count > 0 then
-                    Gen.listOf Arb.generate<NonNull<string>>
+                    Gen.listOf (ArbMap.generate<NonNull<string>> ArbMap.defaults)
                 else
                     Gen.constant []
 
@@ -50,13 +50,16 @@ module TestJsonSerde =
                 |> List.map KeyValuePair
                 |> Dictionary
 
-            let! readOnlyDictKeys = Gen.listOf Arb.generate<NonNull<string>>
+            let! readOnlyDictKeys = Gen.listOf (ArbMap.generate<NonNull<string>> ArbMap.defaults)
             let readOnlyDictKeys = readOnlyDictKeys |> List.map _.Get |> List.distinct
-            let! readOnlyDictValues = Gen.listOfLength readOnlyDictKeys.Length (Gen.listOf Arb.generate<char>)
+
+            let! readOnlyDictValues =
+                Gen.listOfLength readOnlyDictKeys.Length (Gen.listOf (ArbMap.generate<char> ArbMap.defaults))
+
             let readOnlyDict = List.zip readOnlyDictKeys readOnlyDictValues |> readOnlyDict
 
             let! dictKeys = Gen.listOf uriGen
-            let! dictValues = Gen.listOfLength dictKeys.Length Arb.generate<bool>
+            let! dictValues = Gen.listOfLength dictKeys.Length (ArbMap.generate<bool> ArbMap.defaults)
             let dict = List.zip dictKeys dictValues |> dict
 
             return
@@ -71,28 +74,38 @@ module TestJsonSerde =
 
     let outerGen : Gen<JsonRecordTypeWithBoth> =
         gen {
-            let! a = Arb.generate<int>
-            let! b = Arb.generate<NonNull<string>>
-            let! c = Gen.listOf Arb.generate<int>
+            let! a = ArbMap.generate<int> ArbMap.defaults
+            let! b = ArbMap.generate<NonNull<string>> ArbMap.defaults
+            let! c = Gen.listOf (ArbMap.generate<int> ArbMap.defaults)
             let! depth = Gen.choose (0, 2)
             let! d = innerGen depth
-            let! e = Gen.arrayOf Arb.generate<NonNull<string>>
-            let! arr = Gen.arrayOf Arb.generate<int>
-            let! byte = Arb.generate
-            let! sbyte = Arb.generate
-            let! i = Arb.generate
-            let! i32 = Arb.generate
-            let! i64 = Arb.generate
-            let! u = Arb.generate
-            let! u32 = Arb.generate
-            let! u64 = Arb.generate
-            let! f = Arb.generate |> Gen.filter (fun s -> Double.IsFinite (s / 1.0<measure>))
-            let! f32 = Arb.generate |> Gen.filter (fun s -> Single.IsFinite (s / 1.0f<measure>))
-            let! single = Arb.generate |> Gen.filter (fun s -> Single.IsFinite (s / 1.0f<measure>))
-            let! intMeasureOption = Arb.generate
-            let! intMeasureNullable = Arb.generate
+            let! e = Gen.arrayOf (ArbMap.generate<NonNull<string>> ArbMap.defaults)
+            let! arr = Gen.arrayOf (ArbMap.generate<int> ArbMap.defaults)
+            let! byte = ArbMap.generate ArbMap.defaults
+            let! sbyte = ArbMap.generate ArbMap.defaults
+            let! i = ArbMap.generate ArbMap.defaults
+            let! i32 = ArbMap.generate ArbMap.defaults
+            let! i64 = ArbMap.generate ArbMap.defaults
+            let! u = ArbMap.generate ArbMap.defaults
+            let! u32 = ArbMap.generate ArbMap.defaults
+            let! u64 = ArbMap.generate ArbMap.defaults
+
+            let! f =
+                ArbMap.generate ArbMap.defaults
+                |> Gen.filter (fun s -> Double.IsFinite (s / 1.0<measure>))
+
+            let! f32 =
+                ArbMap.generate ArbMap.defaults
+                |> Gen.filter (fun s -> Single.IsFinite (s / 1.0f<measure>))
+
+            let! single =
+                ArbMap.generate ArbMap.defaults
+                |> Gen.filter (fun s -> Single.IsFinite (s / 1.0f<measure>))
+
+            let! intMeasureOption = ArbMap.generate ArbMap.defaults
+            let! intMeasureNullable = ArbMap.generate ArbMap.defaults
             let! someEnum = Gen.choose (0, 1)
-            let! timestamp = Arb.generate
+            let! timestamp = ArbMap.generate ArbMap.defaults
 
             return
                 {
@@ -270,10 +283,10 @@ module TestJsonSerde =
             match case with
             | 0 -> return FirstDu.EmptyCase
             | 1 ->
-                let! s = Arb.generate<NonNull<string>>
+                let! s = ArbMap.generate<NonNull<string>> ArbMap.defaults
                 return FirstDu.Case1 s.Get
             | 2 ->
-                let! i = Arb.generate<int>
+                let! i = ArbMap.generate<int> ArbMap.defaults
                 let! record = outerGen
                 return FirstDu.Case2 (record, i)
             | _ -> return failwith $"unexpected: %i{case}"
@@ -293,7 +306,6 @@ module TestJsonSerde =
 
     [<Test>]
     let ``DU generator covers all cases`` () =
-        let rand = Random ()
         let cases = FSharpType.GetUnionCases typeof<FirstDu>
         let counts = Array.zeroCreate<int> cases.Length
 
@@ -301,11 +313,13 @@ module TestJsonSerde =
 
         let mutable i = 0
 
-        while i < 10_000 && Array.exists (fun i -> i = 0) counts do
-            let du = Gen.eval 10 (StdGen.StdGen (rand.Next (), rand.Next ())) duGen
+        let property (du : FirstDu) =
             let tag = decompose du
             counts.[tag] <- counts.[tag] + 1
             i <- i + 1
+            true
+
+        Check.One (Config.Quick, Prop.forAll (Arb.fromGen duGen) property)
 
         for i in counts do
             i |> shouldBeGreaterThan 0

WoofWare.Myriad.Plugins.Test/TestMockGenerator/TestMockGenerator.fs

@@ -34,3 +34,16 @@ module TestMockGenerator =
         mock.Mem1 3 'a' |> shouldEqual "aaa"
         mock.Mem2 (3, "hi") 'a' |> shouldEqual "hiahiahi"
         mock.Mem3 (3, "hi") 'a' |> shouldEqual "hiahiahi"
+
+    [<Test>]
+    let ``Example of use: properties`` () =
+        let mock : TypeWithProperties =
+            { TypeWithPropertiesMock.Empty with
+                Mem1 = fun i -> async { return Option.toArray i }
+                Prop1 = fun () -> 44
+            }
+            :> _
+
+        mock.Mem1 (Some "hi") |> Async.RunSynchronously |> shouldEqual [| "hi" |]
+
+        mock.Prop1 |> shouldEqual 44

WoofWare.Myriad.Plugins.Test/TestMockGenerator/TestMockGeneratorNoAttr.fs

@@ -0,0 +1,36 @@
+namespace WoofWare.Myriad.Plugins.Test
+
+open System
+open SomeNamespace
+open NUnit.Framework
+open FsUnitTyped
+
+[<TestFixture>]
+module TestMockGeneratorNoAttr =
+
+    [<Test>]
+    let ``Example of use: IPublicType`` () =
+        let mock : IPublicTypeNoAttr =
+            { PublicTypeNoAttrMock.Empty with
+                Mem1 = fun (s, count) -> List.replicate count s
+            }
+            :> _
+
+        let _ =
+            Assert.Throws<NotImplementedException> (fun () -> mock.Mem2 "hi" |> ignore<int>)
+
+        mock.Mem1 ("hi", 3) |> shouldEqual [ "hi" ; "hi" ; "hi" ]
+
+    [<Test>]
+    let ``Example of use: curried args`` () =
+        let mock : CurriedNoAttr<_> =
+            { CurriedNoAttrMock.Empty () with
+                Mem1 = fun i c -> Array.replicate i c |> String
+                Mem2 = fun (i, s) c -> String.concat $"%c{c}" (List.replicate i s)
+                Mem3 = fun (i, s) c -> String.concat $"%c{c}" (List.replicate i s)
+            }
+            :> _
+
+        mock.Mem1 3 'a' |> shouldEqual "aaa"
+        mock.Mem2 (3, "hi") 'a' |> shouldEqual "hiahiahi"
+        mock.Mem3 (3, "hi") 'a' |> shouldEqual "hiahiahi"

WoofWare.Myriad.Plugins.Test/WoofWare.Myriad.Plugins.Test.fsproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>net8.0</TargetFramework>
+    <TargetFramework>net9.0</TargetFramework>
     <IsPackable>false</IsPackable>
     <IsTestProject>true</IsTestProject>
     <!--
@@ -9,6 +9,7 @@
       I have not yet seen a single instance where I care about this warning
     -->
     <NoWarn>$(NoWarn),NU1903</NoWarn>
+    <TestingPlatformDotnetTestSupport>true</TestingPlatformDotnetTestSupport>
   </PropertyGroup>
 
   <ItemGroup>
@@ -26,6 +27,7 @@
     <Compile Include="TestHttpClient\TestVaultClient.fs" />
     <Compile Include="TestHttpClient\TestVariableHeader.fs" />
     <Compile Include="TestMockGenerator\TestMockGenerator.fs" />
+    <Compile Include="TestMockGenerator\TestMockGeneratorNoAttr.fs" />
     <Compile Include="TestJsonSerialize\TestJsonSerde.fs" />
     <Compile Include="TestCataGenerator\TestCataGenerator.fs" />
     <Compile Include="TestCataGenerator\TestDirectory.fs" />
@@ -40,12 +42,12 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="ApiSurface" Version="4.1.5"/>
-    <PackageReference Include="FsCheck" Version="2.16.6"/>
-    <PackageReference Include="FsUnit" Version="6.0.1"/>
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.11.1"/>
-    <PackageReference Include="NUnit" Version="4.2.2"/>
-    <PackageReference Include="NUnit3TestAdapter" Version="4.6.0"/>
+    <PackageReference Include="ApiSurface" Version="4.1.20"/>
+    <PackageReference Include="FsCheck" Version="3.2.0"/>
+    <PackageReference Include="FsUnit" Version="7.0.1"/>
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.13.0"/>
+    <PackageReference Include="NUnit" Version="4.3.2"/>
+    <PackageReference Include="NUnit3TestAdapter" Version="5.0.0"/>
   </ItemGroup>
 
   <ItemGroup>

WoofWare.Myriad.Plugins/ArgParserGenerator.fs

@@ -4,8 +4,8 @@ open System
 open System.Text
 open Fantomas.FCS.Syntax
 open Fantomas.FCS.Text.Range
-open Fantomas.FCS.Xml
-open Myriad.Core
+open TypeEquality
+open WoofWare.Whippet.Fantomas
 
 type internal ArgParserOutputSpec =
     {
@@ -673,7 +673,7 @@ module internal ArgParserGenerator =
                 args
                 |> Map.toList
                 |> List.map (fun (ident, expr) -> SynLongIdent.create [ Ident.create ident ], expr)
-                |> AstHelper.instantiateRecord
+                |> SynExpr.createRecord None
             )
 
         tree, counter
@@ -1224,7 +1224,7 @@ module internal ArgParserGenerator =
                                     (SynExpr.CreateConst ()))
                         ])
                 SynMatchClause.create
-                    (SynPat.listCons (SynPat.createConst (SynConst.CreateString "--")) (SynPat.named "rest"))
+                    (SynPat.listCons (SynPat.createConst (SynConst.Create "--")) (SynPat.named "rest"))
                     (SynExpr.callMethodArg
                         "AddRange"
                         (SynExpr.paren (
@@ -1396,7 +1396,7 @@ module internal ArgParserGenerator =
 
                             [
                                 SynMatchClause.create
-                                    SynPat.createNull
+                                    (SynPat.named "None")
                                     (SynExpr.sequential
                                         [
                                             errorMessage
@@ -1406,7 +1406,7 @@ module internal ArgParserGenerator =
                                             unchecked
                                         ])
 
-                                SynMatchClause.create (SynPat.named "x") parser
+                                SynMatchClause.create (SynPat.nameWithArgs "Some" [ SynPat.named "x" ]) parser
                             ]
                             |> SynExpr.createMatch result
                         | ArgumentDefaultSpec.FunctionCall name ->
@@ -1643,7 +1643,7 @@ module internal ArgParserGenerator =
         let modInfo =
             SynComponentInfo.create modName
             |> SynComponentInfo.withDocString (
-                PreXmlDoc.Create $" Methods to parse arguments for the type %s{taggedType.Name.idText}"
+                PreXmlDoc.create $"Methods to parse arguments for the type %s{taggedType.Name.idText}"
             )
             |> SynComponentInfo.addAttributes modAttrs
 
@@ -1666,7 +1666,7 @@ module internal ArgParserGenerator =
                             [
                                 {
                                     Attrs = []
-                                    Ident = Ident.create "key"
+                                    Ident = Some (Ident.create "key")
                                     Type = SynType.string
                                 }
                             ]
@@ -1694,7 +1694,7 @@ module internal ArgParserGenerator =
                     [ Ident.create "parse'" ]
                     [
                         SynPat.named "getEnvironmentVariable"
-                        |> SynPat.annotateType (SynType.funFromDomain SynType.string SynType.string)
+                        |> SynPat.annotateType (SynType.funFromDomain SynType.string (SynType.option SynType.string))
                         argsParam
                     ]
                 |> SynBinding.withReturnAnnotation (SynType.createLongIdent [ taggedType.Name ])
@@ -1708,7 +1708,12 @@ module internal ArgParserGenerator =
 
             let parse =
                 SynExpr.createLongIdent' parsePrimeCall
-                |> SynExpr.applyTo (SynExpr.createLongIdent [ "System" ; "Environment" ; "GetEnvironmentVariable" ])
+                |> SynExpr.applyTo (
+                    SynExpr.paren (
+                        SynExpr.createLongIdent [ "System" ; "Environment" ; "GetEnvironmentVariable" ]
+                        |> SynExpr.composeWith (SynExpr.createLongIdent [ "Option" ; "ofObj" ])
+                    )
+                )
                 |> SynExpr.applyTo (SynExpr.createIdent "args")
                 |> SynBinding.basic [ Ident.create "parse" ] [ argsParam ]
                 |> SynBinding.withReturnAnnotation (SynType.createLongIdent [ taggedType.Name ])
@@ -1740,75 +1745,12 @@ module internal ArgParserGenerator =
 
         [
             for openStatement in opens do
-                yield SynModuleDecl.CreateOpen openStatement
+                yield SynModuleDecl.openAny openStatement
             yield taggedMod
         ]
         |> SynModuleOrNamespace.createNamespace ns
 
-    let generate (context : GeneratorContext) : Output =
-        let ast, _ =
-            Ast.fromFilename context.InputFilename |> Async.RunSynchronously |> Array.head
-
-        let types =
-            Ast.extractTypeDefn ast
-            |> List.groupBy (fst >> List.map _.idText >> String.concat ".")
-            |> List.map (fun (_, v) -> fst (List.head v), List.collect snd v)
-
-        let opens = AstHelper.extractOpens ast
-
-        let namespaceAndTypes =
-            types
-            |> List.collect (fun (ns, types) ->
-                let typeWithAttr =
-                    types
-                    |> List.choose (fun ty ->
-                        match Ast.getAttribute<ArgParserAttribute> ty with
-                        | None -> None
-                        | Some attr ->
-                            let arg =
-                                match SynExpr.stripOptionalParen attr.ArgExpr with
-                                | SynExpr.Const (SynConst.Bool value, _) -> value
-                                | SynExpr.Const (SynConst.Unit, _) -> ArgParserAttribute.DefaultIsExtensionMethod
-                                | arg ->
-                                    failwith
-                                        $"Unrecognised argument %+A{arg} to [<%s{nameof ArgParserAttribute}>]. Literals are not supported. Use `true` or `false` (or unit) only."
-
-                            let spec =
-                                {
-                                    ExtensionMethods = arg
-                                }
-
-                            Some (ty, spec)
-                    )
-
-                typeWithAttr
-                |> List.map (fun taggedType ->
-                    let unions, records, others =
-                        (([], [], []), types)
-                        ||> List.fold (fun
-                                           (unions, records, others)
-                                           (SynTypeDefn.SynTypeDefn (sci, repr, smd, _, _, _) as ty) ->
-                            match repr with
-                            | SynTypeDefnRepr.Simple (SynTypeDefnSimpleRepr.Union (access, cases, _), _) ->
-                                UnionType.OfUnion sci smd access cases :: unions, records, others
-                            | SynTypeDefnRepr.Simple (SynTypeDefnSimpleRepr.Record (access, fields, _), _) ->
-                                unions, RecordType.OfRecord sci smd access fields :: records, others
-                            | _ -> unions, records, ty :: others
-                        )
-
-                    if not others.IsEmpty then
-                        failwith
-                            $"Error: all types recursively defined together with an ArgParserGenerator type must be discriminated unions or records. %+A{others}"
-
-                    (ns, taggedType, unions, records)
-                )
-            )
-
-        let modules =
-            namespaceAndTypes
-            |> List.map (fun (ns, taggedType, unions, records) -> createModule opens ns taggedType unions records)
-
-        Output.Ast modules
+open Myriad.Core
 
 /// Myriad generator that provides a catamorphism for an algebraic data type.
 [<MyriadGenerator("arg-parser")>]
@@ -1817,4 +1759,66 @@ type ArgParserGenerator () =
     interface IMyriadGenerator with
         member _.ValidInputExtensions = [ ".fs" ]
 
-        member _.Generate (context : GeneratorContext) = ArgParserGenerator.generate context
+        member _.Generate (context : GeneratorContext) =
+            let ast, _ =
+                Ast.fromFilename context.InputFilename |> Async.RunSynchronously |> Array.head
+
+            let types = Ast.getTypes ast
+
+            let opens = AstHelper.extractOpens ast
+
+            let namespaceAndTypes =
+                types
+                |> List.collect (fun (ns, types) ->
+                    let typeWithAttr =
+                        types
+                        |> List.choose (fun ty ->
+                            match SynTypeDefn.getAttribute typeof<ArgParserAttribute>.Name ty with
+                            | None -> None
+                            | Some attr ->
+                                let arg =
+                                    match SynExpr.stripOptionalParen attr.ArgExpr with
+                                    | SynExpr.Const (SynConst.Bool value, _) -> value
+                                    | SynExpr.Const (SynConst.Unit, _) -> ArgParserAttribute.DefaultIsExtensionMethod
+                                    | arg ->
+                                        failwith
+                                            $"Unrecognised argument %+A{arg} to [<%s{nameof ArgParserAttribute}>]. Literals are not supported. Use `true` or `false` (or unit) only."
+
+                                let spec =
+                                    {
+                                        ExtensionMethods = arg
+                                    }
+
+                                Some (ty, spec)
+                        )
+
+                    typeWithAttr
+                    |> List.map (fun taggedType ->
+                        let unions, records, others =
+                            (([], [], []), types)
+                            ||> List.fold (fun
+                                               (unions, records, others)
+                                               (SynTypeDefn.SynTypeDefn (sci, repr, smd, _, _, _) as ty) ->
+                                match repr with
+                                | SynTypeDefnRepr.Simple (SynTypeDefnSimpleRepr.Union (access, cases, _), _) ->
+                                    UnionType.OfUnion sci smd access cases :: unions, records, others
+                                | SynTypeDefnRepr.Simple (SynTypeDefnSimpleRepr.Record (access, fields, _), _) ->
+                                    unions, RecordType.OfRecord sci smd access fields :: records, others
+                                | _ -> unions, records, ty :: others
+                            )
+
+                        if not others.IsEmpty then
+                            failwith
+                                $"Error: all types recursively defined together with an ArgParserGenerator type must be discriminated unions or records. %+A{others}"
+
+                        (ns, taggedType, unions, records)
+                    )
+                )
+
+            let modules =
+                namespaceAndTypes
+                |> List.map (fun (ns, taggedType, unions, records) ->
+                    ArgParserGenerator.createModule opens ns taggedType unions records
+                )
+
+            Output.Ast modules

WoofWare.Myriad.Plugins/AstHelper.fs

@@ -2,173 +2,7 @@ namespace WoofWare.Myriad.Plugins
 
 open Fantomas.FCS.Syntax
 open Fantomas.FCS.Text.Range
-open Fantomas.FCS.Xml
-
-type internal ParameterInfo =
-    {
-        Attributes : SynAttribute list
-        IsOptional : bool
-        Id : Ident option
-        Type : SynType
-    }
-
-type internal TupledArg =
-    {
-        HasParen : bool
-        Args : ParameterInfo list
-    }
-
-type internal MemberInfo =
-    {
-        ReturnType : SynType
-        Accessibility : SynAccess option
-        /// Each element of this list is a list of args in a tuple, or just one arg if not a tuple.
-        Args : TupledArg list
-        Identifier : Ident
-        Attributes : SynAttribute list
-        XmlDoc : PreXmlDoc option
-        IsInline : bool
-        IsMutable : bool
-    }
-
-[<RequireQualifiedAccess>]
-type internal PropertyAccessors =
-    | Get
-    | Set
-    | GetSet
-
-type internal PropertyInfo =
-    {
-        Type : SynType
-        Accessibility : SynAccess option
-        Attributes : SynAttribute list
-        XmlDoc : PreXmlDoc option
-        Accessors : PropertyAccessors
-        IsInline : bool
-        Identifier : Ident
-    }
-
-type internal InterfaceType =
-    {
-        Attributes : SynAttribute list
-        Name : LongIdent
-        Inherits : SynType list
-        Members : MemberInfo list
-        Properties : PropertyInfo list
-        Generics : SynTyparDecls option
-        Accessibility : SynAccess option
-    }
-
-type internal RecordType =
-    {
-        Name : Ident
-        Fields : SynField list
-        /// Any additional members which are not record fields.
-        Members : SynMemberDefns option
-        XmlDoc : PreXmlDoc option
-        Generics : SynTyparDecls option
-        TypeAccessibility : SynAccess option
-        ImplAccessibility : SynAccess option
-        Attributes : SynAttribute list
-    }
-
-    /// Parse from the AST.
-    static member OfRecord
-        (sci : SynComponentInfo)
-        (smd : SynMemberDefns)
-        (access : SynAccess option)
-        (recordFields : SynField list)
-        : RecordType
-        =
-        match sci with
-        | SynComponentInfo.SynComponentInfo (attrs, typars, _, longId, doc, _, implAccess, _) ->
-            {
-                Name = List.last longId
-                Fields = recordFields
-                Members = if smd.IsEmpty then None else Some smd
-                XmlDoc = if doc.IsEmpty then None else Some doc
-                Generics = typars
-                ImplAccessibility = implAccess
-                TypeAccessibility = access
-                Attributes = attrs |> List.collect (fun l -> l.Attributes)
-            }
-
-/// Methods for manipulating UnionCase.
-[<RequireQualifiedAccess>]
-module UnionCase =
-    /// Construct our structured `UnionCase` from an FCS `SynUnionCase`: extract everything
-    /// we care about from the AST representation.
-    let ofSynUnionCase (case : SynUnionCase) : UnionCase<Ident option> =
-        match case with
-        | SynUnionCase.SynUnionCase (attributes, ident, caseType, xmlDoc, access, _, _) ->
-
-        let ident =
-            match ident with
-            | SynIdent.SynIdent (ident, _) -> ident
-
-        let fields =
-            match caseType with
-            | SynUnionCaseKind.Fields cases -> cases
-            | SynUnionCaseKind.FullType _ -> failwith "unexpected FullType union"
-
-        {
-            Name = ident
-            XmlDoc = if xmlDoc.IsEmpty then None else Some xmlDoc
-            Access = access
-            Attributes = attributes |> List.collect (fun t -> t.Attributes)
-            Fields = fields |> List.map SynField.extract
-        }
-
-    /// Functorial `map`.
-    let mapIdentFields<'a, 'b> (f : 'a -> 'b) (unionCase : UnionCase<'a>) : UnionCase<'b> =
-        {
-            Attributes = unionCase.Attributes
-            Name = unionCase.Name
-            Access = unionCase.Access
-            XmlDoc = unionCase.XmlDoc
-            Fields = unionCase.Fields |> List.map (SynField.mapIdent f)
-        }
-
-/// Everything you need to know about a discriminated union definition.
-type internal UnionType =
-    {
-        /// The name of the DU: for example, `type Foo = | Blah` has this being `Foo`.
-        Name : Ident
-        /// Any additional members which are not union cases.
-        Members : SynMemberDefns option
-        /// Any docstring associated with the DU itself (not its cases).
-        XmlDoc : PreXmlDoc option
-        /// Generic type parameters this DU takes: `type Foo<'a> = | ...`.
-        Generics : SynTyparDecls option
-        /// Attributes of the DU (not its cases): `[<Attr>] type Foo = | ...`
-        Attributes : SynAttribute list
-        /// Accessibility modifier of the DU: `type private Foo = ...`
-        TypeAccessibility : SynAccess option
-        /// Accessibility modifier of the DU's implementation: `type Foo = private | ...`
-        ImplAccessibility : SynAccess option
-        /// The actual DU cases themselves.
-        Cases : UnionCase<Ident option> list
-    }
-
-    static member OfUnion
-        (sci : SynComponentInfo)
-        (smd : SynMemberDefns)
-        (access : SynAccess option)
-        (cases : SynUnionCase list)
-        : UnionType
-        =
-        match sci with
-        | SynComponentInfo.SynComponentInfo (attrs, typars, _, longId, doc, _, implAccess, _) ->
-            {
-                Name = List.last longId
-                Members = if smd.IsEmpty then None else Some smd
-                XmlDoc = if doc.IsEmpty then None else Some doc
-                Generics = typars
-                Attributes = attrs |> List.collect (fun l -> l.Attributes)
-                TypeAccessibility = access
-                ImplAccessibility = implAccess
-                Cases = cases |> List.map UnionCase.ofSynUnionCase
-            }
+open WoofWare.Whippet.Fantomas
 
 /// Anything that is part of an ADT.
 /// A record is a product of stuff; this type represents one of those stuffs.
@@ -202,13 +36,6 @@ module internal AstHelper =
         | SynTypeDefnRepr.Simple (SynTypeDefnSimpleRepr.Enum _, _) -> true
         | _ -> false
 
-    let instantiateRecord (fields : (SynLongIdent * SynExpr) list) : SynExpr =
-        let fields =
-            fields
-            |> List.map (fun (rfn, synExpr) -> SynExprRecordField ((rfn, true), Some range0, Some synExpr, None))
-
-        SynExpr.Record (None, None, fields, range0)
-
     let defineRecordType (record : RecordType) : SynTypeDefn =
         let name =
             SynComponentInfo.create record.Name

WoofWare.Myriad.Plugins/CataGenerator.fs

@@ -3,12 +3,11 @@ namespace WoofWare.Myriad.Plugins
 open Fantomas.FCS.Syntax
 open Fantomas.FCS.SyntaxTrivia
 open Fantomas.FCS.Xml
-open Myriad.Core
+open WoofWare.Whippet.Fantomas
 
 [<RequireQualifiedAccess>]
 module internal CataGenerator =
     open Fantomas.FCS.Text.Range
-    open Myriad.Core.Ast
 
     /// The user-provided DU contains cases, each of which contains fields.
     /// We have a hard-coded set of things we know how to deal with as field contents.
@@ -175,20 +174,14 @@ module internal CataGenerator =
             |> SynExpr.applyFunction (SynExpr.createLongIdent [ "Seq" ; "exactlyOne" ])
             |> SynExpr.createLet
                 [
-                    SynBinding.Let (
-                        valData = SynValData.SynValData (None, SynValInfo.Empty, None),
-                        pattern =
-                            SynPat.tupleNoParen (
-                                allArtificialTyparNames
-                                |> List.map (fun (t : Ident) ->
-                                    SynPat.namedI (Ident.create (t.idText + "Stack") |> Ident.lowerFirstLetter)
-                                )
-                            ),
-                        expr =
-                            SynExpr.applyFunction
-                                (SynExpr.applyFunction (SynExpr.createIdent "loop") (SynExpr.createIdent "cata"))
-                                (SynExpr.createIdent "instructions")
-                    )
+                    SynBinding.basicTuple
+                        (allArtificialTyparNames
+                         |> List.map (fun (t : Ident) ->
+                             SynPat.namedI (Ident.create (t.idText + "Stack") |> Ident.lowerFirstLetter)
+                         ))
+                        (SynExpr.applyFunction
+                            (SynExpr.applyFunction (SynExpr.createIdent "loop") (SynExpr.createIdent "cata"))
+                            (SynExpr.createIdent "instructions"))
                 ]
         ]
         |> SynExpr.sequential
@@ -463,18 +456,39 @@ module internal CataGenerator =
                         {
                             SynFieldData.Type = field.Type
                             Attrs = []
-                            Ident = None
+                            Ident = field.Name
                         }
-                        |> SynField.make
                     )
 
-                SynUnionCase.Create (unionCase.Name, fields)
+                {
+                    Name = unionCase.Name
+                    XmlDoc = None
+                    Access = None
+                    Attributes = []
+                    Fields = fields
+                }
+                |> SynUnionCase.create
             )
 
         let casesFromCases =
             recursiveCases analysis
             |> List.map (fun case ->
-                SynUnionCase.Create (case.Name, case.Fields |> List.map (fun field -> SynField.Create field.Type))
+                {
+                    UnionCase.Name = case.Name
+                    XmlDoc = None
+                    Access = None
+                    Attributes = []
+                    Fields =
+                        case.Fields
+                        |> List.map (fun field ->
+                            {
+                                SynFieldData.Type = field.Type
+                                Attrs = []
+                                Ident = field.Name
+                            }
+                        )
+                }
+                |> SynUnionCase.create
             )
 
         let cases = casesFromProcess @ casesFromCases
@@ -539,8 +553,8 @@ module internal CataGenerator =
             |> List.map (fun case ->
                 let arity =
                     SynValInfo.SynValInfo (
-                        case.Fields |> List.map (fun field -> [ SynArgInfo.Empty ]),
-                        SynArgInfo.Empty
+                        case.Fields |> List.map (fun field -> [ SynArgInfo.empty ]),
+                        SynArgInfo.empty
                     )
 
                 (SynType.var generics.[analysis.GenericName.idText], List.rev case.FlattenedFields)
@@ -852,9 +866,7 @@ module internal CataGenerator =
                     else
                         []
 
-                SynMatchClause.create
-                    (SynPat.CreateLongIdent (SynLongIdent.create unionCase.Match, matchLhs))
-                    matchBody
+                SynMatchClause.create (SynPat.identWithArgs unionCase.Match (SynArgPats.create matchLhs)) matchBody
             )
 
         SynExpr.createMatch (SynExpr.createIdent "x") matchCases
@@ -1059,7 +1071,7 @@ module internal CataGenerator =
                             (SynExpr.CreateConst 0)
                             (SynExpr.createLongIdent [ "instructions" ; "Count" ]))
                         body
-                    SynExpr.CreateTuple (
+                    SynExpr.tupleNoParen (
                         analysis
                         |> List.map (fun unionAnalysis -> [ unionAnalysis.StackName ] |> SynExpr.createLongIdent')
                     )
@@ -1103,7 +1115,7 @@ module internal CataGenerator =
         let modInfo =
             SynComponentInfo.create moduleName
             |> SynComponentInfo.withDocString (
-                PreXmlDoc.Create $" Methods to perform a catamorphism over the type %s{parentName}"
+                PreXmlDoc.create $"Methods to perform a catamorphism over the type %s{parentName}"
             )
             |> SynComponentInfo.addAttributes [ SynAttribute.requireQualifiedAccess ]
 
@@ -1150,7 +1162,7 @@ module internal CataGenerator =
 
         [
             for openStatement in opens do
-                yield SynModuleDecl.CreateOpen openStatement
+                yield SynModuleDecl.openAny openStatement
             yield! cataStructures
             yield cataRecord
             yield
@@ -1162,53 +1174,30 @@ module internal CataGenerator =
         ]
         |> SynModuleOrNamespace.createNamespace ns
 
-    let generate (context : GeneratorContext) : Output =
-        let ast, _ =
-            Ast.fromFilename context.InputFilename |> Async.RunSynchronously |> Array.head
+    /// This function comes from Myriad, and is therefore derived from an Apache 2.0-licenced work.
+    /// https://github.com/MoiraeSoftware/myriad/blob/3c9818faabf9d508c10c28d5ecd26e66fafb48a1/src/Myriad.Core/Ast.fs#L160
+    /// A copy of the Apache 2.0 licence is at ApacheLicence.txt.
+    let groupedTypeDefns (ast : ParsedInput) : (LongIdent * SynTypeDefn list) list =
+        let rec extractTypes (moduleDecls : SynModuleDecl list) (ns : LongIdent) =
+            [
+                for moduleDecl in moduleDecls do
+                    match moduleDecl with
+                    | SynModuleDecl.Types (types, _) -> yield (ns, types)
+                    | SynModuleDecl.NestedModule (SynComponentInfo (_, _, _, longId, _, _, _, _), _, decls, _, _, _) ->
+                        let combined = longId |> List.append ns
+                        yield! (extractTypes decls combined)
+                    | _ -> ()
+            ]
 
-        let types = Ast.extractTypeDefn ast
+        [
+            match ast with
+            | ParsedInput.ImplFile (ParsedImplFileInput (_, _, _, _, _, modules, _, _, _)) ->
+                for SynModuleOrNamespace (namespaceId, _, _, moduleDecls, _, _, _, _, _) in modules do
+                    yield! extractTypes moduleDecls namespaceId
+            | _ -> ()
+        ]
 
-        let opens = AstHelper.extractOpens ast
-
-        let namespaceAndTypes =
-            types
-            |> List.choose (fun (ns, types) ->
-                let typeWithAttr =
-                    types
-                    |> List.tryPick (fun ty ->
-                        match Ast.getAttribute<CreateCatamorphismAttribute> ty with
-                        | None -> None
-                        | Some attr -> Some (attr.ArgExpr, ty)
-                    )
-
-                match typeWithAttr with
-                | Some taggedType ->
-                    let unions, records, others =
-                        (([], [], []), types)
-                        ||> List.fold (fun
-                                           (unions, records, others)
-                                           (SynTypeDefn.SynTypeDefn (_, repr, _, _, _, _) as ty) ->
-                            match repr with
-                            | SynTypeDefnRepr.Simple (SynTypeDefnSimpleRepr.Union _, _) ->
-                                ty :: unions, records, others
-                            | SynTypeDefnRepr.Simple (SynTypeDefnSimpleRepr.Record _, _) ->
-                                unions, ty :: records, others
-                            | _ -> unions, records, ty :: others
-                        )
-
-                    if not others.IsEmpty then
-                        failwith
-                            $"Error: all types recursively defined together with a CreateCatamorphism type must be discriminated unions or records. %+A{others}"
-
-                    Some (ns, taggedType, unions, records)
-                | _ -> None
-            )
-
-        let modules =
-            namespaceAndTypes
-            |> List.map (fun (ns, taggedType, unions, records) -> createModule opens ns taggedType unions records)
-
-        Output.Ast modules
+open Myriad.Core
 
 /// Myriad generator that provides a catamorphism for an algebraic data type.
 [<MyriadGenerator("create-catamorphism")>]
@@ -1217,4 +1206,52 @@ type CreateCatamorphismGenerator () =
     interface IMyriadGenerator with
         member _.ValidInputExtensions = [ ".fs" ]
 
-        member _.Generate (context : GeneratorContext) = CataGenerator.generate context
+        member _.Generate (context : GeneratorContext) =
+            let ast, _ =
+                Ast.fromFilename context.InputFilename |> Async.RunSynchronously |> Array.head
+
+            let types = CataGenerator.groupedTypeDefns ast
+
+            let opens = AstHelper.extractOpens ast
+
+            let namespaceAndTypes =
+                types
+                |> List.choose (fun (ns, types) ->
+                    let typeWithAttr =
+                        types
+                        |> List.tryPick (fun ty ->
+                            match SynTypeDefn.getAttribute typeof<CreateCatamorphismAttribute>.Name ty with
+                            | None -> None
+                            | Some attr -> Some (attr.ArgExpr, ty)
+                        )
+
+                    match typeWithAttr with
+                    | Some taggedType ->
+                        let unions, records, others =
+                            (([], [], []), types)
+                            ||> List.fold (fun
+                                               (unions, records, others)
+                                               (SynTypeDefn.SynTypeDefn (_, repr, _, _, _, _) as ty) ->
+                                match repr with
+                                | SynTypeDefnRepr.Simple (SynTypeDefnSimpleRepr.Union _, _) ->
+                                    ty :: unions, records, others
+                                | SynTypeDefnRepr.Simple (SynTypeDefnSimpleRepr.Record _, _) ->
+                                    unions, ty :: records, others
+                                | _ -> unions, records, ty :: others
+                            )
+
+                        if not others.IsEmpty then
+                            failwith
+                                $"Error: all types recursively defined together with a CreateCatamorphism type must be discriminated unions or records. %+A{others}"
+
+                        Some (ns, taggedType, unions, records)
+                    | _ -> None
+                )
+
+            let modules =
+                namespaceAndTypes
+                |> List.map (fun (ns, taggedType, unions, records) ->
+                    CataGenerator.createModule opens ns taggedType unions records
+                )
+
+            Output.Ast modules

WoofWare.Myriad.Plugins/HttpClientGenerator.fs

@@ -1,8 +1,8 @@
 namespace WoofWare.Myriad.Plugins
 
-open System.IO
 open System.Net.Http
 open Fantomas.FCS.Syntax
+open WoofWare.Whippet.Fantomas
 
 type internal HttpClientGeneratorOutputSpec =
     {
@@ -13,17 +13,6 @@ type internal HttpClientGeneratorOutputSpec =
 module internal HttpClientGenerator =
     open Fantomas.FCS.Text.Range
 
-    let outputFile = FileInfo "/tmp/output.txt"
-
-    // do
-    //     use _ = File.Create outputFile.FullName
-    //     ()
-
-    let log (line : string) =
-        // use w = outputFile.AppendText ()
-        // w.WriteLine line
-        ()
-
     [<RequireQualifiedAccess>]
     type PathSpec =
         | Verbatim of string
@@ -234,7 +223,7 @@ module internal HttpClientGenerator =
                                     SynExpr.CreateConst ("{" + substituteId + "}")
                                     SynExpr.callMethod "ToString" (SynExpr.createIdent' varName)
                                     |> SynExpr.pipeThroughFunction (
-                                        SynExpr.createLongIdent [ "System" ; "Web" ; "HttpUtility" ; "UrlEncode" ]
+                                        SynExpr.createLongIdent [ "System" ; "Uri" ; "EscapeDataString" ]
                                     )
                                 ])
                     | _ -> template
@@ -286,9 +275,7 @@ module internal HttpClientGenerator =
                     SynExpr.createIdent' firstValueId
                     |> SynExpr.toString firstValue.Type
                     |> SynExpr.paren
-                    |> SynExpr.pipeThroughFunction (
-                        SynExpr.createLongIdent [ "System" ; "Web" ; "HttpUtility" ; "UrlEncode" ]
-                    )
+                    |> SynExpr.pipeThroughFunction (SynExpr.createLongIdent [ "System" ; "Uri" ; "EscapeDataString" ])
                     |> SynExpr.paren
                     |> SynExpr.plus (SynExpr.plus urlSeparator (SynExpr.CreateConst (firstKey + "=")))
 
@@ -301,9 +288,7 @@ module internal HttpClientGenerator =
 
                     SynExpr.toString paramValue.Type (SynExpr.createIdent' paramValueId)
                     |> SynExpr.paren
-                    |> SynExpr.pipeThroughFunction (
-                        SynExpr.createLongIdent [ "System" ; "Web" ; "HttpUtility" ; "UrlEncode" ]
-                    )
+                    |> SynExpr.pipeThroughFunction (SynExpr.createLongIdent [ "System" ; "Uri" ; "EscapeDataString" ])
                     |> SynExpr.paren
                     |> SynExpr.plus (SynExpr.plus uri (SynExpr.CreateConst ("&" + paramKey + "=")))
                 )
@@ -412,30 +397,59 @@ module internal HttpClientGenerator =
             | String -> SynExpr.createIdent "responseString"
             | Stream -> SynExpr.createIdent "responseStream"
             | RestEaseResponseType contents ->
-                let deserialiser =
-                    JsonParseGenerator.parseNode
+                match JsonNodeWithNullability.Identify contents with
+                | CannotBeNull ->
+                    let deserialiser =
+                        JsonParseGenerator.parseNonNullableNode
+                            None
+                            JsonParseGenerator.JsonParseOption.None
+                            contents
+                            (SynExpr.createIdent "jsonNode")
+                        |> SynExpr.paren
+                        |> SynExpr.createThunk
+
+                    // new RestEase.Response (content : string, response : HttpResponseMessage, deserialiser : unit -> 'T)
+                    SynExpr.createNew
+                        (SynType.app' (SynType.createLongIdent' [ "RestEase" ; "Response" ]) [ SynType.Anon range0 ])
+                        (SynExpr.tupleNoParen
+                            [
+                                SynExpr.createIdent "responseString"
+                                SynExpr.createIdent "response"
+                                deserialiser
+                            ])
+                | Nullable ->
+                    let deserialiser =
+                        JsonParseGenerator.parseNullableNode
+                            None
+                            JsonParseGenerator.JsonParseOption.None
+                            contents
+                            (SynExpr.createIdent "jsonNode")
+                        |> SynExpr.paren
+                        |> SynExpr.createThunk
+
+                    // new RestEase.Response (content : string, response : HttpResponseMessage, deserialiser : unit -> 'T)
+                    SynExpr.createNew
+                        (SynType.app' (SynType.createLongIdent' [ "RestEase" ; "Response" ]) [ SynType.Anon range0 ])
+                        (SynExpr.tupleNoParen
+                            [
+                                SynExpr.createIdent "responseString"
+                                SynExpr.createIdent "response"
+                                deserialiser
+                            ])
+            | retType ->
+                match JsonNodeWithNullability.Identify retType with
+                | Nullable ->
+                    JsonParseGenerator.parseNullableNode
                         None
                         JsonParseGenerator.JsonParseOption.None
-                        contents
+                        retType
+                        (SynExpr.createIdent "jsonNode")
+                | CannotBeNull ->
+                    JsonParseGenerator.parseNonNullableNode
+                        None
+                        JsonParseGenerator.JsonParseOption.None
+                        retType
                         (SynExpr.createIdent "jsonNode")
-                    |> SynExpr.paren
-                    |> SynExpr.createThunk
-
-                // new RestEase.Response (content : string, response : HttpResponseMessage, deserialiser : unit -> 'T)
-                SynExpr.createNew
-                    (SynType.app' (SynType.createLongIdent' [ "RestEase" ; "Response" ]) [ SynType.Anon range0 ])
-                    (SynExpr.tupleNoParen
-                        [
-                            SynExpr.createIdent "responseString"
-                            SynExpr.createIdent "response"
-                            deserialiser
-                        ])
-            | retType ->
-                JsonParseGenerator.parseNode
-                    None
-                    JsonParseGenerator.JsonParseOption.None
-                    retType
-                    (SynExpr.createIdent "jsonNode")
 
         let contentTypeHeader, memberHeaders =
             info.Headers
@@ -508,23 +522,45 @@ module internal HttpClientGenerator =
                         )
                     ]
                 | BodyParamMethods.Serialise ty ->
+                    let isNullable =
+                        match JsonNodeWithNullability.Identify ty with
+                        | CannotBeNull -> false
+                        | Nullable -> true
+
                     [
                         Let (
                             "queryParams",
                             createStringContent (
                                 SynExpr.createIdent' bodyParamName
-                                |> SynExpr.pipeThroughFunction (fst (JsonSerializeGenerator.serializeNode ty))
+                                |> SynExpr.pipeThroughFunction (
+                                    fst (
+                                        (if isNullable then
+                                             JsonSerializeGenerator.serializeNodeNullable
+                                         else
+                                             JsonSerializeGenerator.serializeNodeNonNullable)
+                                            ty
+                                    )
+                                )
                                 |> SynExpr.pipeThroughFunction (
                                     SynExpr.createLambda
                                         "node"
-                                        (SynExpr.ifThenElse
-                                            (SynExpr.applyFunction
-                                                (SynExpr.createIdent "isNull")
-                                                (SynExpr.createIdent "node"))
-                                            (SynExpr.applyFunction
-                                                (SynExpr.createLongIdent [ "node" ; "ToJsonString" ])
-                                                (SynExpr.CreateConst ()))
-                                            (SynExpr.CreateConst "null"))
+                                        (if isNullable then
+                                             SynExpr.createMatch
+                                                 (SynExpr.createIdent "node")
+                                                 [
+                                                     SynMatchClause.create
+                                                         (SynPat.named "None")
+                                                         (SynExpr.CreateConst "null")
+                                                     SynMatchClause.create
+                                                         (SynPat.nameWithArgs "Some" [ SynPat.named "node" ])
+                                                         (SynExpr.applyFunction
+                                                             (SynExpr.createLongIdent [ "node" ; "ToJsonString" ])
+                                                             (SynExpr.CreateConst ()))
+                                                 ]
+                                         else
+                                             (SynExpr.applyFunction
+                                                 (SynExpr.createLongIdent [ "node" ; "ToJsonString" ])
+                                                 (SynExpr.CreateConst ())))
                                 )
                             )
                         )
@@ -571,6 +607,24 @@ module internal HttpClientGenerator =
                     )
                 )
 
+            let jsonNodeWithoutNull =
+                match JsonNodeWithNullability.Identify info.TaskReturnType with
+                | Nullable ->
+                    Let (
+                        "jsonNode",
+                        SynExpr.createIdent "jsonNode"
+                        |> SynExpr.pipeThroughFunction (SynExpr.createLongIdent [ "Option" ; "ofObj" ])
+                    )
+                | CannotBeNull ->
+                    Let (
+                        "jsonNode",
+                        JsonSerializeGenerator.assertNotNull
+                            (Ident.create "jsonNode")
+                            (SynExpr.CreateConst
+                                $"Response from server was the JSON null object; expected a non-nullable type %s{SynType.toHumanReadableString info.TaskReturnType}")
+                            (SynExpr.createIdent "jsonNode")
+                    )
+
             let setVariableHeaders =
                 variableHeaders
                 |> List.map (fun (headerName, callToGetValue) ->
@@ -645,14 +699,16 @@ module internal HttpClientGenerator =
                     yield responseString
                     yield responseStream
                     yield jsonNode
+                    yield jsonNodeWithoutNull
                 | String -> yield responseString
                 | Stream -> yield responseStream
-                | Unit ->
+                | UnitType ->
                     // What we're returning doesn't depend on the content, so don't bother!
                     ()
                 | _ ->
                     yield responseStream
                     yield jsonNode
+                    yield jsonNodeWithoutNull
             ]
             |> SynExpr.createCompExpr "async" returnExpr
             |> SynExpr.startAsTask cancellationTokenArg
@@ -992,10 +1048,14 @@ type HttpClientGenerator () =
         member _.ValidInputExtensions = [ ".fs" ]
 
         member _.Generate (context : GeneratorContext) =
+            let targetedTypes =
+                MyriadParamParser.render context.AdditionalParameters
+                |> Map.map (fun _ v -> v.Split '!' |> Array.toList |> List.map DesiredGenerator.Parse)
+
             let ast, _ =
                 Ast.fromFilename context.InputFilename |> Async.RunSynchronously |> Array.head
 
-            let types = Ast.extractTypeDefn ast
+            let types = Ast.getTypes ast
 
             let opens = AstHelper.extractOpens ast
 
@@ -1004,13 +1064,33 @@ type HttpClientGenerator () =
                 |> List.choose (fun (ns, types) ->
                     types
                     |> List.choose (fun typeDef ->
-                        match Ast.getAttribute<HttpClientAttribute> typeDef with
-                        | None -> None
+                        match SynTypeDefn.getAttribute typeof<HttpClientAttribute>.Name typeDef with
+                        | None ->
+                            let name = SynTypeDefn.getName typeDef |> List.map _.idText |> String.concat "."
+
+                            match Map.tryFind name targetedTypes with
+                            | Some desired ->
+                                desired
+                                |> List.tryPick (fun generator ->
+                                    match generator with
+                                    | DesiredGenerator.HttpClient arg ->
+                                        let spec =
+                                            {
+                                                ExtensionMethods =
+                                                    arg
+                                                    |> Option.defaultValue
+                                                        HttpClientAttribute.DefaultIsExtensionMethod
+                                            }
+
+                                        Some (typeDef, spec)
+                                    | _ -> None
+                                )
+                            | _ -> None
                         | Some attr ->
                             let arg =
                                 match SynExpr.stripOptionalParen attr.ArgExpr with
                                 | SynExpr.Const (SynConst.Bool value, _) -> value
-                                | SynExpr.Const (SynConst.Unit, _) -> JsonParseAttribute.DefaultIsExtensionMethod
+                                | SynExpr.Const (SynConst.Unit, _) -> HttpClientAttribute.DefaultIsExtensionMethod
                                 | arg ->
                                     failwith
                                         $"Unrecognised argument %+A{arg} to [<%s{nameof HttpClientAttribute}>]. Literals are not supported. Use `true` or `false` (or unit) only."

WoofWare.Myriad.Plugins/InterfaceMockGenerator.fs

@@ -3,6 +3,7 @@ namespace WoofWare.Myriad.Plugins
 open System
 open Fantomas.FCS.Syntax
 open Fantomas.FCS.Xml
+open WoofWare.Whippet.Fantomas
 
 type internal GenerateMockOutputSpec =
     {
@@ -88,7 +89,7 @@ module internal InterfaceMockGenerator =
                      []
                  else
                      [ SynPat.unit ])
-                (AstHelper.instantiateRecord constructorFields)
+                (SynExpr.createRecord None constructorFields)
             |> SynBinding.withXmlDoc (PreXmlDoc.create "An implementation where every method throws.")
             |> SynBinding.withReturnAnnotation constructorReturnType
             |> SynMemberDefn.staticMember
@@ -158,6 +159,15 @@ module internal InterfaceMockGenerator =
                     |> SynMemberDefn.memberImplementation
                 )
 
+            let properties =
+                interfaceType.Properties
+                |> List.map (fun pi ->
+                    SynExpr.createLongIdent' [ Ident.create "this" ; pi.Identifier ]
+                    |> SynExpr.applyTo (SynExpr.CreateConst ())
+                    |> SynBinding.basic [ Ident.create "this" ; pi.Identifier ] []
+                    |> SynMemberDefn.memberImplementation
+                )
+
             let interfaceName =
                 let baseName = SynType.createLongIdent interfaceType.Name
 
@@ -173,7 +183,7 @@ module internal InterfaceMockGenerator =
 
                     SynType.app' baseName generics
 
-            SynMemberDefn.Interface (interfaceName, Some range0, Some members, range0)
+            SynMemberDefn.Interface (interfaceName, Some range0, Some (members @ properties), range0)
 
         let access =
             match interfaceType.Accessibility, spec.IsInternal with
@@ -247,6 +257,15 @@ module internal InterfaceMockGenerator =
         |> SynField.make
         |> SynField.withDocString (mem.XmlDoc |> Option.defaultValue PreXmlDoc.Empty)
 
+    let constructProperty (prop : PropertyInfo) : SynField =
+        {
+            Attrs = []
+            Ident = Some prop.Identifier
+            Type = SynType.toFun [ SynType.unit ] prop.Type
+        }
+        |> SynField.make
+        |> SynField.withDocString (prop.XmlDoc |> Option.defaultValue PreXmlDoc.Empty)
+
     let createRecord
         (namespaceId : LongIdent)
         (opens : SynOpenDeclTarget list)
@@ -254,7 +273,12 @@ module internal InterfaceMockGenerator =
         : SynModuleOrNamespace
         =
         let interfaceType = AstHelper.parseInterface interfaceType
-        let fields = interfaceType.Members |> List.map constructMember
+
+        let fields =
+            interfaceType.Members
+            |> List.map constructMember
+            |> List.append (interfaceType.Properties |> List.map constructProperty)
+
         let docString = PreXmlDoc.create "Mock record type for an interface"
 
         let name =
@@ -283,18 +307,42 @@ type InterfaceMockGenerator () =
         member _.ValidInputExtensions = [ ".fs" ]
 
         member _.Generate (context : GeneratorContext) =
+            let targetedTypes =
+                MyriadParamParser.render context.AdditionalParameters
+                |> Map.map (fun _ v -> v.Split '!' |> Array.toList |> List.map DesiredGenerator.Parse)
+
             let ast, _ =
                 Ast.fromFilename context.InputFilename |> Async.RunSynchronously |> Array.head
 
-            let types = Ast.extractTypeDefn ast
+            let types = Ast.getTypes ast
 
             let namespaceAndInterfaces =
                 types
                 |> List.choose (fun (ns, types) ->
                     types
                     |> List.choose (fun typeDef ->
-                        match Ast.getAttribute<GenerateMockAttribute> typeDef with
-                        | None -> None
+                        match SynTypeDefn.getAttribute typeof<GenerateMockAttribute>.Name typeDef with
+                        | None ->
+                            let name = SynTypeDefn.getName typeDef |> List.map _.idText |> String.concat "."
+
+                            match Map.tryFind name targetedTypes with
+                            | Some desired ->
+                                desired
+                                |> List.tryPick (fun generator ->
+                                    match generator with
+                                    | DesiredGenerator.InterfaceMock arg ->
+                                        let spec =
+                                            {
+                                                IsInternal =
+                                                    arg
+                                                    |> Option.defaultValue GenerateMockAttribute.DefaultIsInternal
+                                            }
+
+                                        Some (typeDef, spec)
+                                    | _ -> None
+                                )
+                            | _ -> None
+
                         | Some attr ->
                             let arg =
                                 match SynExpr.stripOptionalParen attr.ArgExpr with

WoofWare.Myriad.Plugins/JsonParseGenerator.fs

@@ -4,6 +4,7 @@ open System
 open System.Text
 open Fantomas.FCS.Syntax
 open Fantomas.FCS.SyntaxTrivia
+open WoofWare.Whippet.Fantomas
 
 type internal JsonParseOutputSpec =
     {
@@ -25,7 +26,7 @@ module internal JsonParseGenerator =
             }
 
     /// (match {indexed} with | null -> raise (System.Collections.Generic.KeyNotFoundException ({propertyName} not found)) | v -> v)
-    let assertNotNull (propertyName : SynExpr) (indexed : SynExpr) =
+    let assertPropertyExists (propertyName : SynExpr) (indexed : SynExpr) =
         let raiseExpr =
             SynExpr.applyFunction
                 (SynExpr.createIdent "sprintf")
@@ -39,34 +40,34 @@ module internal JsonParseGenerator =
             |> SynExpr.applyFunction (SynExpr.createIdent "raise")
 
         [
-            SynMatchClause.create SynPat.createNull raiseExpr
-            SynMatchClause.create (SynPat.named "v") (SynExpr.createIdent "v")
+            SynMatchClause.create (SynPat.named "None") raiseExpr
+            SynMatchClause.create (SynPat.nameWithArgs "Some" [ SynPat.named "v" ]) (SynExpr.createIdent "v")
         ]
         |> SynExpr.createMatch indexed
         |> SynExpr.paren
 
     /// {node}.AsValue().GetValue<{typeName}> ()
-    /// If `propertyName` is Some, uses `assertNotNull {node}` instead of `{node}`.
+    /// If `propertyName` is Some, uses `assertPropertyExists {node}` instead of `{node}`.
     let asValueGetValue (propertyName : SynExpr option) (typeName : string) (node : SynExpr) : SynExpr =
         match propertyName with
         | None -> node
-        | Some propertyName -> assertNotNull propertyName node
+        | Some propertyName -> assertPropertyExists propertyName node
         |> SynExpr.callMethod "AsValue"
         |> SynExpr.callGenericMethod' "GetValue" typeName
 
     let asValueGetValueIdent (propertyName : SynExpr option) (typeName : LongIdent) (node : SynExpr) : SynExpr =
         match propertyName with
         | None -> node
-        | Some propertyName -> assertNotNull propertyName node
+        | Some propertyName -> assertPropertyExists propertyName node
         |> SynExpr.callMethod "AsValue"
         |> SynExpr.callGenericMethod (SynLongIdent.createS "GetValue") [ SynType.createLongIdent typeName ]
 
     /// {node}.AsObject()
-    /// If `propertyName` is Some, uses `assertNotNull {node}` instead of `{node}`.
+    /// If `propertyName` is Some, uses `assertPropertyExists {node}` instead of `{node}`.
     let asObject (propertyName : SynExpr option) (node : SynExpr) : SynExpr =
         match propertyName with
         | None -> node
-        | Some propertyName -> assertNotNull propertyName node
+        | Some propertyName -> assertPropertyExists propertyName node
         |> SynExpr.callMethod "AsObject"
 
     /// {type}.jsonParse {node}
@@ -76,11 +77,12 @@ module internal JsonParseGenerator =
 
     /// collectionType is e.g. "List"; we'll be calling `ofSeq` on it.
     /// body is the body of a lambda which takes a parameter `elt`.
-    /// {assertNotNull node}.AsArray()
-    /// |> Seq.map (fun elt -> {body})
+    /// {assertPropertyExists node}.AsArray()
+    /// |> Seq.map (fun elt -> {assertNotNull} {body})
     /// |> {collectionType}.ofSeq
     let asArrayMapped
         (propertyName : SynExpr option)
+        (elementType : SynType)
         (collectionType : string)
         (node : SynExpr)
         (body : SynExpr)
@@ -88,10 +90,23 @@ module internal JsonParseGenerator =
         =
         match propertyName with
         | None -> node
-        | Some propertyName -> assertNotNull propertyName node
+        | Some propertyName -> assertPropertyExists propertyName node
         |> SynExpr.callMethod "AsArray"
         |> SynExpr.pipeThroughFunction (
-            SynExpr.applyFunction (SynExpr.createLongIdent [ "Seq" ; "map" ]) (SynExpr.createLambda "elt" body)
+            body
+            |> JsonSerializeGenerator.assertNotNull
+                (Ident.create "elt")
+                (match propertyName with
+                 | None ->
+                     SynExpr.CreateConst
+                         $"Expected element of array (element type %s{SynType.toHumanReadableString elementType}) to be non-null, but found a null element"
+                 | Some propertyName ->
+                     SynExpr.CreateConst
+                         $"Expected element of array (element type %s{SynType.toHumanReadableString elementType}) to be non-null, but found a null element, at %%s"
+                     |> SynExpr.applyFunction (SynExpr.createIdent "sprintf")
+                     |> SynExpr.applyTo propertyName)
+            |> SynExpr.createLambda "elt"
+            |> SynExpr.applyFunction (SynExpr.createLongIdent [ "Seq" ; "map" ])
         )
         |> SynExpr.pipeThroughFunction (SynExpr.createLongIdent [ collectionType ; "ofSeq" ])
 
@@ -100,14 +115,41 @@ module internal JsonParseGenerator =
 
     /// fun kvp -> let key = {key(kvp)} in let value = {value(kvp)} in (key, value))
     /// The inputs will be fed with appropriate SynExprs to apply them to the `kvp.Key` and `kvp.Value` args.
-    let dictionaryMapper (key : SynExpr -> SynExpr) (value : SynExpr -> SynExpr) : SynExpr =
+    let dictionaryMapper
+        (propertyName : SynExpr option)
+        (valueTypeIsNullable : bool)
+        (key : SynExpr -> SynExpr)
+        (valueType : SynType)
+        (value : SynExpr -> SynExpr)
+        : SynExpr
+        =
         let keyArg = SynExpr.createLongIdent [ "kvp" ; "Key" ] |> SynExpr.paren
 
-        let valueArg = SynExpr.createLongIdent [ "kvp" ; "Value" ] |> SynExpr.paren
+        let valueArg = SynExpr.createLongIdent [ "kvp" ; "Value" ]
+
+        let value =
+            if valueTypeIsNullable then
+                (value (SynExpr.createIdent "value"))
+            else
+                let errorMessage =
+                    match propertyName with
+                    | None ->
+                        SynExpr.CreateConst
+                            $"Expected dictionary value of type %s{SynType.toHumanReadableString valueType} to be non-null, but it was null"
+                    | Some propertyName ->
+                        SynExpr.CreateConst
+                            $"Expected dictionary value of type %s{SynType.toHumanReadableString valueType} to be non-null, but it was null, at key %%s"
+                        |> SynExpr.applyFunction (SynExpr.createIdent "sprintf")
+                        |> SynExpr.applyTo propertyName
+
+                JsonSerializeGenerator.assertNotNull
+                    (Ident.create "value")
+                    errorMessage
+                    (value (SynExpr.createIdent "value"))
 
         // No need to paren here, we're on the LHS of a `let`
-        SynExpr.tupleNoParen [ SynExpr.createIdent "key" ; SynExpr.createIdent "value" ]
-        |> SynExpr.createLet [ SynBinding.basic [ Ident.create "value" ] [] (value valueArg) ]
+        SynExpr.tupleNoParen [ SynExpr.createIdent "key" ; value ]
+        |> SynExpr.createLet [ SynBinding.basic [ Ident.create "value" ] [] valueArg ]
         |> SynExpr.createLet [ SynBinding.basic [ Ident.create "key" ] [] (key keyArg) ]
         |> SynExpr.createLambda "kvp"
 
@@ -164,10 +206,61 @@ module internal JsonParseGenerator =
                 ))
                 handler
 
+    let rec parseNullableNode
+        // TODO: unused?!
+        (propertyName : SynExpr option)
+        (options : JsonParseOption)
+        (fieldType : SynType)
+        (node : SynExpr)
+        : SynExpr
+        =
+        match fieldType with
+        | OptionType ty ->
+            match ty with
+            | OptionType _
+            | NullableType _ ->
+                failwith
+                    $"Nested nullable types are not supported, because we can't distinguish between None and Some None. %s{SynType.toHumanReadableString ty}"
+            | _ ->
+
+            let someClause =
+                parseNonNullableNode None options ty (SynExpr.createIdent "v")
+                |> SynExpr.pipeThroughFunction (SynExpr.createIdent "Some")
+                |> SynMatchClause.create (SynPat.nameWithArgs "Some" [ SynPat.named "v" ])
+
+            [
+                SynMatchClause.create (SynPat.named "None") (SynExpr.createIdent "None")
+                someClause
+            ]
+            |> SynExpr.createMatch node
+        | NullableType ty ->
+            match ty with
+            | OptionType _
+            | NullableType _ ->
+                failwith
+                    $"Nested nullable types are not supported, because we can't distinguish between None and Some None. %s{SynType.toHumanReadableString ty}"
+            | _ ->
+
+            let someClause =
+                parseNonNullableNode None options ty (SynExpr.createIdent "v")
+                |> SynExpr.pipeThroughFunction (SynExpr.createLongIdent [ "System" ; "Nullable" ])
+                |> SynMatchClause.create (SynPat.nameWithArgs "Some" [ SynPat.named "v" ])
+
+            [
+                SynMatchClause.create
+                    (SynPat.named "None")
+                    (SynExpr.applyFunction (SynExpr.createLongIdent [ "System" ; "Nullable" ]) (SynExpr.CreateConst ()))
+                someClause
+            ]
+            |> SynExpr.createMatch node
+        | _ ->
+            failwith
+                $"Encountered type %s{SynType.toHumanReadableString fieldType} which is expected to be nullable, but couldn't identify it"
+
     /// Given `node.["town"]`, for example, choose how to obtain a JSON value from it.
     /// The property name is used in error messages at runtime to show where a JSON
     /// parse error occurred; supply `None` to indicate "don't validate".
-    let rec parseNode
+    and parseNonNullableNode
         (propertyName : SynExpr option)
         (options : JsonParseOption)
         (fieldType : SynType)
@@ -176,101 +269,184 @@ module internal JsonParseGenerator =
         =
         // TODO: parsing format for DateTime etc
         match fieldType with
+        | OptionType _
+        | NullableType _ ->
+            failwith
+                $"Unexpectedly parsing nullable type %s{SynType.toHumanReadableString fieldType} as if it were non-nullable."
+        // Struct types
         | DateOnly ->
             node
             |> asValueGetValue propertyName "string"
             |> SynExpr.pipeThroughFunction (SynExpr.createLongIdent [ "System" ; "DateOnly" ; "Parse" ])
-        | Uri ->
-            node
-            |> asValueGetValue propertyName "string"
-            |> SynExpr.pipeThroughFunction (SynExpr.createLongIdent [ "System" ; "Uri" ])
-        | Guid ->
-            node
-            |> asValueGetValue propertyName "string"
-            |> SynExpr.pipeThroughFunction (SynExpr.createLongIdent [ "System" ; "Guid" ; "Parse" ])
         | DateTime ->
             node
             |> asValueGetValue propertyName "string"
             |> SynExpr.pipeThroughFunction (SynExpr.createLongIdent [ "System" ; "DateTime" ; "Parse" ])
+        | NumberType typeName -> parseNumberType options propertyName node typeName
+        | Guid ->
+            node
+            |> asValueGetValue propertyName "string"
+            |> SynExpr.pipeThroughFunction (SynExpr.createLongIdent [ "System" ; "Guid" ; "Parse" ])
+        // Reference types
+        | Uri ->
+            node
+            |> asValueGetValue propertyName "string"
+            |> SynExpr.pipeThroughFunction (SynExpr.createLongIdent [ "System" ; "Uri" ])
         | DateTimeOffset ->
             node
             |> asValueGetValue propertyName "string"
             |> SynExpr.pipeThroughFunction (SynExpr.createLongIdent [ "System" ; "DateTimeOffset" ; "Parse" ])
-        | NumberType typeName -> parseNumberType options propertyName node typeName
         | PrimitiveType typeName -> asValueGetValueIdent propertyName typeName node
-        | OptionType ty ->
-            let someClause =
-                parseNode None options ty (SynExpr.createIdent "v")
-                |> SynExpr.pipeThroughFunction (SynExpr.createIdent "Some")
-                |> SynMatchClause.create (SynPat.named "v")
-
-            [
-                SynMatchClause.create SynPat.createNull (SynExpr.createIdent "None")
-                someClause
-            ]
-            |> SynExpr.createMatch node
-        | NullableType ty ->
-            let someClause =
-                parseNode None options ty (SynExpr.createIdent "v")
-                |> SynExpr.pipeThroughFunction (SynExpr.createLongIdent [ "System" ; "Nullable" ])
-                |> SynMatchClause.create (SynPat.named "v")
-
-            [
-                SynMatchClause.create
-                    SynPat.createNull
-                    (SynExpr.applyFunction (SynExpr.createLongIdent [ "System" ; "Nullable" ]) (SynExpr.CreateConst ()))
-                someClause
-            ]
-            |> SynExpr.createMatch node
         | ListType ty ->
-            parseNode None options ty (SynExpr.createIdent "elt")
-            |> asArrayMapped propertyName "List" node
+            match JsonNodeWithNullability.Identify ty with
+            | CannotBeNull ->
+                parseNonNullableNode None options ty (SynExpr.createIdent "elt")
+                |> asArrayMapped propertyName ty "List" node
+            | Nullable ->
+                parseNullableNode None options ty (SynExpr.createIdent "elt")
+                |> asArrayMapped propertyName ty "List" node
         | ArrayType ty ->
-            parseNode None options ty (SynExpr.createIdent "elt")
-            |> asArrayMapped propertyName "Array" node
+            match JsonNodeWithNullability.Identify ty with
+            | CannotBeNull ->
+                parseNonNullableNode None options ty (SynExpr.createIdent "elt")
+                |> asArrayMapped propertyName ty "Array" node
+            | Nullable ->
+                parseNullableNode None options ty (SynExpr.createIdent "elt")
+                |> asArrayMapped propertyName ty "Array" node
         | IDictionaryType (keyType, valueType) ->
-            node
-            |> asObject propertyName
-            |> SynExpr.pipeThroughFunction (
-                SynExpr.applyFunction
-                    (SynExpr.createLongIdent [ "Seq" ; "map" ])
-                    (dictionaryMapper (parseKeyString keyType) (parseNode None options valueType))
-            )
-            |> SynExpr.pipeThroughFunction (SynExpr.createIdent "dict")
+            match JsonNodeWithNullability.Identify valueType with
+            | CannotBeNull ->
+                node
+                |> asObject propertyName
+                |> SynExpr.pipeThroughFunction (
+                    SynExpr.applyFunction
+                        (SynExpr.createLongIdent [ "Seq" ; "map" ])
+                        (dictionaryMapper
+                            propertyName
+                            false
+                            (parseKeyString keyType)
+                            valueType
+                            (parseNonNullableNode None options valueType))
+                )
+                |> SynExpr.pipeThroughFunction (SynExpr.createIdent "dict")
+            | Nullable ->
+                node
+                |> asObject propertyName
+                |> SynExpr.pipeThroughFunction (
+                    SynExpr.applyFunction
+                        (SynExpr.createLongIdent [ "Seq" ; "map" ])
+                        (dictionaryMapper
+                            propertyName
+                            true
+                            (parseKeyString keyType)
+                            valueType
+                            (parseNullableNode None options valueType))
+                )
+                |> SynExpr.pipeThroughFunction (SynExpr.createIdent "dict")
         | DictionaryType (keyType, valueType) ->
-            node
-            |> asObject propertyName
-            |> SynExpr.pipeThroughFunction (
-                SynExpr.applyFunction
-                    (SynExpr.createLongIdent [ "Seq" ; "map" ])
-                    (dictionaryMapper (parseKeyString keyType) (parseNode None options valueType))
-            )
-            |> SynExpr.pipeThroughFunction (
-                SynExpr.applyFunction
-                    (SynExpr.createLongIdent [ "Seq" ; "map" ])
-                    (SynExpr.createLongIdent [ "System" ; "Collections" ; "Generic" ; "KeyValuePair" ])
-            )
-            |> SynExpr.pipeThroughFunction (
-                SynExpr.createLongIdent [ "System" ; "Collections" ; "Generic" ; "Dictionary" ]
-            )
+            match JsonNodeWithNullability.Identify valueType with
+            | CannotBeNull ->
+                node
+                |> asObject propertyName
+                |> SynExpr.pipeThroughFunction (
+                    SynExpr.applyFunction
+                        (SynExpr.createLongIdent [ "Seq" ; "map" ])
+                        (dictionaryMapper
+                            propertyName
+                            false
+                            (parseKeyString keyType)
+                            valueType
+                            (parseNonNullableNode None options valueType))
+                )
+                |> SynExpr.pipeThroughFunction (
+                    SynExpr.applyFunction
+                        (SynExpr.createLongIdent [ "Seq" ; "map" ])
+                        (SynExpr.createLongIdent [ "System" ; "Collections" ; "Generic" ; "KeyValuePair" ])
+                )
+                |> SynExpr.pipeThroughFunction (
+                    SynExpr.createLongIdent [ "System" ; "Collections" ; "Generic" ; "Dictionary" ]
+                )
+            | Nullable ->
+                node
+                |> asObject propertyName
+                |> SynExpr.pipeThroughFunction (
+                    SynExpr.applyFunction
+                        (SynExpr.createLongIdent [ "Seq" ; "map" ])
+                        (dictionaryMapper
+                            propertyName
+                            true
+                            (parseKeyString keyType)
+                            valueType
+                            (parseNullableNode None options valueType))
+                )
+                |> SynExpr.pipeThroughFunction (
+                    SynExpr.applyFunction
+                        (SynExpr.createLongIdent [ "Seq" ; "map" ])
+                        (SynExpr.createLongIdent [ "System" ; "Collections" ; "Generic" ; "KeyValuePair" ])
+                )
+                |> SynExpr.pipeThroughFunction (
+                    SynExpr.createLongIdent [ "System" ; "Collections" ; "Generic" ; "Dictionary" ]
+                )
         | IReadOnlyDictionaryType (keyType, valueType) ->
-            node
-            |> asObject propertyName
-            |> SynExpr.pipeThroughFunction (
-                SynExpr.applyFunction
-                    (SynExpr.createLongIdent [ "Seq" ; "map" ])
-                    (dictionaryMapper (parseKeyString keyType) (parseNode None options valueType))
-            )
-            |> SynExpr.pipeThroughFunction (SynExpr.createIdent "readOnlyDict")
+            match JsonNodeWithNullability.Identify valueType with
+            | CannotBeNull ->
+                node
+                |> asObject propertyName
+                |> SynExpr.pipeThroughFunction (
+                    SynExpr.applyFunction
+                        (SynExpr.createLongIdent [ "Seq" ; "map" ])
+                        (dictionaryMapper
+                            propertyName
+                            false
+                            (parseKeyString keyType)
+                            valueType
+                            (parseNonNullableNode None options valueType))
+                )
+                |> SynExpr.pipeThroughFunction (SynExpr.createIdent "readOnlyDict")
+            | Nullable ->
+                node
+                |> asObject propertyName
+                |> SynExpr.pipeThroughFunction (
+                    SynExpr.applyFunction
+                        (SynExpr.createLongIdent [ "Seq" ; "map" ])
+                        (dictionaryMapper
+                            propertyName
+                            true
+                            (parseKeyString keyType)
+                            valueType
+                            (parseNullableNode None options valueType))
+                )
+                |> SynExpr.pipeThroughFunction (SynExpr.createIdent "readOnlyDict")
         | MapType (keyType, valueType) ->
-            node
-            |> asObject propertyName
-            |> SynExpr.pipeThroughFunction (
-                SynExpr.applyFunction
-                    (SynExpr.createLongIdent [ "Seq" ; "map" ])
-                    (dictionaryMapper (parseKeyString keyType) (parseNode None options valueType))
-            )
-            |> SynExpr.pipeThroughFunction (SynExpr.createLongIdent [ "Map" ; "ofSeq" ])
+            match JsonNodeWithNullability.Identify valueType with
+            | CannotBeNull ->
+                node
+                |> asObject propertyName
+                |> SynExpr.pipeThroughFunction (
+                    SynExpr.applyFunction
+                        (SynExpr.createLongIdent [ "Seq" ; "map" ])
+                        (dictionaryMapper
+                            propertyName
+                            false
+                            (parseKeyString keyType)
+                            valueType
+                            (parseNonNullableNode None options valueType))
+                )
+                |> SynExpr.pipeThroughFunction (SynExpr.createLongIdent [ "Map" ; "ofSeq" ])
+            | Nullable ->
+                node
+                |> asObject propertyName
+                |> SynExpr.pipeThroughFunction (
+                    SynExpr.applyFunction
+                        (SynExpr.createLongIdent [ "Seq" ; "map" ])
+                        (dictionaryMapper
+                            propertyName
+                            true
+                            (parseKeyString keyType)
+                            valueType
+                            (parseNullableNode None options valueType))
+                )
+                |> SynExpr.pipeThroughFunction (SynExpr.createLongIdent [ "Map" ; "ofSeq" ])
         | BigInt ->
             node
             |> SynExpr.callMethod "ToJsonString"
@@ -280,8 +456,8 @@ module internal JsonParseGenerator =
             parseNumberType options propertyName node primType
             |> SynExpr.pipeThroughFunction (Measure.getLanguagePrimitivesMeasure primType)
         | JsonNode -> node
-        | Unit -> SynExpr.CreateConst ()
-        | _ ->
+        | UnitType -> SynExpr.CreateConst ()
+        | fieldType ->
             // Let's just hope that we've also got our own type annotation!
             let typeName =
                 match fieldType with
@@ -290,14 +466,45 @@ module internal JsonParseGenerator =
 
             match propertyName with
             | None -> node
-            | Some propertyName -> assertNotNull propertyName node
+            | Some propertyName -> assertPropertyExists propertyName node
             |> typeJsonParse typeName
 
     /// propertyName is probably a string literal, but it could be a [<Literal>] variable
     /// The result of this function is the body of a let-binding (not including the LHS of that let-binding).
     let createParseRhs (options : JsonParseOption) (propertyName : SynExpr) (fieldType : SynType) : SynExpr =
-        let objectToParse = SynExpr.createIdent "node" |> SynExpr.index propertyName
-        parseNode (Some propertyName) options fieldType objectToParse
+        match JsonNodeWithNullability.Identify fieldType with
+        | Nullable ->
+            let objectToParse =
+                SynExpr.createIdent "node"
+                |> SynExpr.index propertyName
+                |> SynExpr.pipeThroughFunction (SynExpr.createLongIdent [ "Option" ; "ofObj" ])
+
+            parseNullableNode (Some propertyName) options fieldType objectToParse
+        | CannotBeNull ->
+            [
+                SynMatchClause.create
+                    (SynPat.named "None")
+                    (SynExpr.applyFunction
+                        (SynExpr.createIdent "raise")
+                        (SynExpr.paren (
+                            SynExpr.applyFunction
+                                (SynExpr.createLongIdent
+                                    [ "System" ; "Collections" ; "Generic" ; "KeyNotFoundException" ])
+                                (SynExpr.applyFunction
+                                    (SynExpr.createIdent "sprintf")
+                                    (SynExpr.CreateConst "Required key '%s' not found on JSON object")
+                                 |> SynExpr.applyTo (SynExpr.paren propertyName)
+                                 |> SynExpr.paren)
+                        )))
+                SynMatchClause.create
+                    (SynPat.nameWithArgs "Some" [ SynPat.named "node" ])
+                    (parseNonNullableNode None options fieldType (SynExpr.createIdent "node"))
+            ]
+            |> SynExpr.createMatch (
+                SynExpr.createIdent "node"
+                |> SynExpr.index propertyName
+                |> SynExpr.pipeThroughFunction (SynExpr.createLongIdent [ "Option" ; "ofObj" ])
+            )
 
     let isJsonNumberHandling (literal : LongIdent) : bool =
         match List.rev literal |> List.map (fun ident -> ident.idText) with
@@ -350,10 +557,7 @@ module internal JsonParseGenerator =
     let getParseOptions (fieldAttrs : SynAttribute list) =
         (JsonParseOption.None, fieldAttrs)
         ||> List.fold (fun options attr ->
-            if
-                (SynLongIdent.toString attr.TypeName)
-                    .EndsWith ("JsonNumberHandling", StringComparison.Ordinal)
-            then
+            if (SynLongIdent.toString attr.TypeName).EndsWith ("JsonNumberHandling", StringComparison.Ordinal) then
                 let qualifiedEnumValue =
                     match SynExpr.stripOptionalParen attr.ArgExpr with
                     | SynExpr.LongIdent (_, SynLongIdent (ident, _, _), _, _) when isJsonNumberHandling ident ->
@@ -383,15 +587,13 @@ module internal JsonParseGenerator =
                 let propertyNameAttr =
                     fieldData.Attrs
                     |> List.tryFind (fun attr ->
-                        (SynLongIdent.toString attr.TypeName)
-                            .EndsWith ("JsonPropertyName", StringComparison.Ordinal)
+                        (SynLongIdent.toString attr.TypeName).EndsWith ("JsonPropertyName", StringComparison.Ordinal)
                     )
 
                 let extensionDataAttr =
                     fieldData.Attrs
                     |> List.tryFind (fun attr ->
-                        (SynLongIdent.toString attr.TypeName)
-                            .EndsWith ("JsonExtensionData", StringComparison.Ordinal)
+                        (SynLongIdent.toString attr.TypeName).EndsWith ("JsonExtensionData", StringComparison.Ordinal)
                     )
 
                 let propertyName =
@@ -484,7 +686,7 @@ module internal JsonParseGenerator =
         let finalConstruction =
             fields
             |> List.mapi (fun i fieldData -> SynLongIdent.createI fieldData.Ident, SynExpr.createIdent $"arg_%i{i}")
-            |> AstHelper.instantiateRecord
+            |> SynExpr.createRecord None
 
         (finalConstruction, assignments)
         ||> List.fold (fun final assignment -> SynExpr.createLet [ assignment ] final)
@@ -509,7 +711,8 @@ module internal JsonParseGenerator =
                     |> SynExpr.createLet
                         [
                             SynExpr.index (SynExpr.CreateConst "data") (SynExpr.createIdent "node")
-                            |> assertNotNull (SynExpr.CreateConst "data")
+                            |> SynExpr.pipeThroughFunction (SynExpr.createLongIdent [ "Option" ; "ofObj" ])
+                            |> assertPropertyExists (SynExpr.CreateConst "data")
                             |> SynBinding.basic [ Ident.create "node" ] []
                         ]
 
@@ -557,7 +760,8 @@ module internal JsonParseGenerator =
 
                 SynExpr.createIdent "node"
                 |> SynExpr.index property
-                |> assertNotNull property
+                |> SynExpr.pipeThroughFunction (SynExpr.createLongIdent [ "Option" ; "ofObj" ])
+                |> assertPropertyExists property
                 |> SynExpr.pipeThroughFunction (
                     SynExpr.createLambda "v" (SynExpr.callGenericMethod' "GetValue" "string" (SynExpr.createIdent "v"))
                 )
@@ -702,17 +906,21 @@ type JsonParseGenerator () =
         member _.ValidInputExtensions = [ ".fs" ]
 
         member _.Generate (context : GeneratorContext) =
+            let targetedTypes =
+                MyriadParamParser.render context.AdditionalParameters
+                |> Map.map (fun _ v -> v.Split '!' |> Array.toList |> List.map DesiredGenerator.Parse)
+
             let ast, _ =
                 Ast.fromFilename context.InputFilename |> Async.RunSynchronously |> Array.head
 
             let relevantTypes =
-                Ast.extractTypeDefn ast
+                Ast.getTypes ast
                 |> List.map (fun (name, defns) ->
                     defns
                     |> List.choose (fun defn ->
-                        if Ast.isRecord defn then Some defn
-                        elif Ast.isDu defn then Some defn
-                        elif AstHelper.isEnum defn then Some defn
+                        if SynTypeDefn.isRecord defn then Some defn
+                        elif SynTypeDefn.isDu defn then Some defn
+                        elif SynTypeDefn.isEnum defn then Some defn
                         else None
                     )
                     |> fun defns -> name, defns
@@ -723,8 +931,29 @@ type JsonParseGenerator () =
                 |> List.choose (fun (ns, types) ->
                     types
                     |> List.choose (fun typeDef ->
-                        match Ast.getAttribute<JsonParseAttribute> typeDef with
-                        | None -> None
+                        match SynTypeDefn.getAttribute typeof<JsonParseAttribute>.Name typeDef with
+                        | None ->
+                            let name = SynTypeDefn.getName typeDef |> List.map _.idText |> String.concat "."
+
+                            match Map.tryFind name targetedTypes with
+                            | Some desired ->
+                                desired
+                                |> List.tryPick (fun generator ->
+                                    match generator with
+                                    | DesiredGenerator.JsonParse arg ->
+                                        let spec =
+                                            {
+                                                ExtensionMethods =
+                                                    arg
+                                                    |> Option.defaultValue
+                                                        JsonParseAttribute.DefaultIsExtensionMethod
+                                            }
+
+                                        Some (typeDef, spec)
+                                    | _ -> None
+                                )
+                            | _ -> None
+
                         | Some attr ->
                             let arg =
                                 match SynExpr.stripOptionalParen attr.ArgExpr with

WoofWare.Myriad.Plugins/JsonSerializeGenerator.fs

@@ -3,30 +3,107 @@ namespace WoofWare.Myriad.Plugins
 open System
 open System.Text
 open Fantomas.FCS.Syntax
+open WoofWare.Whippet.Fantomas
 
 type internal JsonSerializeOutputSpec =
     {
         ExtensionMethods : bool
     }
 
+/// https://github.com/Smaug123/WoofWare.Myriad/issues/364
+/// The insane design of System.Text.Json is finally causing us to
+/// do vast amounts of coding rather than merely being very annoying.
+type internal JsonNodeWithNullability =
+    | CannotBeNull
+    | Nullable
+
+    static member Identify (ty : SynType) : JsonNodeWithNullability =
+        match ty with
+        | OptionType _
+        | NullableType _ -> JsonNodeWithNullability.Nullable
+        | _ -> JsonNodeWithNullability.CannotBeNull
+
 [<RequireQualifiedAccess>]
 module internal JsonSerializeGenerator =
     open Fantomas.FCS.Text.Range
 
 
     // The absolutely galaxy-brained implementation of JsonValue has `JsonValue.Parse "null"`
-    // identically equal to null. We have to work around this later, but we might as well just
-    // be efficient here and whip up the null directly.
-    let private jsonNull () =
-        SynExpr.createNull ()
-        |> SynExpr.upcast' (SynType.createLongIdent' [ "System" ; "Text" ; "Json" ; "Nodes" ; "JsonNode" ])
+    // identically equal to null, so it's hard to use that type. We use `None` instead to represent
+    // the JSON null value.
+    let private jsonNull () = SynExpr.createIdent "None"
+
+    let assertNotNull (boundIdent : Ident) (message : SynExpr) (body : SynExpr) : SynExpr =
+        let raiseExpr =
+            message
+            |> SynExpr.applyFunction (SynExpr.createLongIdent [ "System" ; "ArgumentNullException" ])
+            |> SynExpr.paren
+            |> SynExpr.applyFunction (SynExpr.createIdent "raise")
+
+        [
+            SynMatchClause.create SynPat.createNull raiseExpr
+            SynMatchClause.create (SynPat.namedI boundIdent) body
+        ]
+        |> SynExpr.createMatch (SynExpr.createIdent' boundIdent)
+        |> SynExpr.paren
+
+    /// The output of this will be an *optional* JsonNode.
+    let rec serializeNodeNullable (fieldType : SynType) : SynExpr * bool =
+        match fieldType with
+        | NullableType ty ->
+            // fun field -> if field.HasValue then {serializeNode ty} field.Value else JsonValue.Create null
+            match JsonNodeWithNullability.Identify ty with
+            | JsonNodeWithNullability.Nullable ->
+                failwith
+                    $"We don't support nested nullable types, because we can't tell the difference between None and Some None: %s{SynType.toHumanReadableString ty}"
+            | JsonNodeWithNullability.CannotBeNull ->
+
+            let inner, innerIsJsonNode = serializeNodeNonNullable ty
+
+            SynExpr.applyFunction inner (SynExpr.createLongIdent [ "field" ; "Value" ])
+            |> SynExpr.upcast' (SynType.createLongIdent' [ "System" ; "Text" ; "Json" ; "Nodes" ; "JsonNode" ])
+            |> SynExpr.pipeThroughFunction (SynExpr.createIdent "Some")
+            |> SynExpr.ifThenElse (SynExpr.createLongIdent [ "field" ; "HasValue" ]) (jsonNull ())
+            |> SynExpr.createLambda "field"
+            |> fun e -> e, innerIsJsonNode
+        | OptionType ty ->
+            // fun field -> match field with | None -> None | Some v -> {serializeNode ty} field |> Some
+            match JsonNodeWithNullability.Identify ty with
+            | JsonNodeWithNullability.Nullable ->
+                failwith
+                    $"We don't support nested nullable types, because we can't tell the difference between None and Some None: %s{SynType.toHumanReadableString ty}"
+            | JsonNodeWithNullability.CannotBeNull ->
+
+            let noneClause = jsonNull () |> SynMatchClause.create (SynPat.named "None")
+
+            let someClause =
+                let inner, innerIsJsonNode = serializeNodeNonNullable ty
+                let target = SynExpr.pipeThroughFunction inner (SynExpr.createIdent "field")
+
+                if innerIsJsonNode then
+                    target
+                else
+                    target
+                    |> SynExpr.paren
+                    |> SynExpr.upcast' (SynType.createLongIdent' [ "System" ; "Text" ; "Json" ; "Nodes" ; "JsonNode" ])
+                |> SynExpr.pipeThroughFunction (SynExpr.createIdent "Some")
+                |> SynMatchClause.create (SynPat.nameWithArgs "Some" [ SynPat.named "field" ])
+
+            [ noneClause ; someClause ]
+            |> SynExpr.createMatch (SynExpr.createIdent "field")
+            |> SynExpr.createLambda "field"
+            |> fun e -> e, true
+        | _ -> failwith $"Did not recognise type %s{SynType.toHumanReadableString fieldType} as nullable"
 
     /// Given `input.Ident`, for example, choose how to add it to the ambient `node`.
     /// The result is a line like `(fun ident -> InnerType.toJsonNode ident)` or `(fun ident -> JsonValue.Create ident)`.
     /// Returns also a bool which is true if the resulting SynExpr represents something of type JsonNode.
-    let rec serializeNode (fieldType : SynType) : SynExpr * bool =
+    and serializeNodeNonNullable (fieldType : SynType) : SynExpr * bool =
         // TODO: serialization format for DateTime etc
         match fieldType with
+        | OptionType _
+        | NullableType _ ->
+            failwith $"Tried to treat the type %s{SynType.toHumanReadableString fieldType} as non-nullable"
         | DateOnly
         | DateTime
         | NumberType _
@@ -35,8 +112,21 @@ module internal JsonSerializeGenerator =
         | Guid
         | Uri ->
             // JsonValue.Create<type>
-            SynExpr.createLongIdent [ "System" ; "Text" ; "Json" ; "Nodes" ; "JsonValue" ; "Create" ]
-            |> SynExpr.typeApp [ fieldType ]
+            (SynExpr.createIdent "field")
+            |> assertNotNull
+                (Ident.create "field")
+                (SynExpr.CreateConst
+                    $"Expected type %s{SynType.toHumanReadableString fieldType} to be non-null, but received a null value when serialising")
+            |> SynExpr.createLet
+                [
+                    SynBinding.basic
+                        [ Ident.create "field" ]
+                        []
+                        (SynExpr.createLongIdent [ "System" ; "Text" ; "Json" ; "Nodes" ; "JsonValue" ; "Create" ]
+                         |> SynExpr.typeApp [ fieldType ]
+                         |> SynExpr.applyTo (SynExpr.createIdent "field"))
+                ]
+            |> SynExpr.createLambda "field"
             |> fun e -> e, false
         | DateTimeOffset ->
             // fun field -> field.ToString("o") |> JsonValue.Create<string>
@@ -49,41 +139,17 @@ module internal JsonSerializeGenerator =
             |> SynExpr.pipeThroughFunction create
             |> SynExpr.createLambda "field"
             |> fun e -> e, false
-        | NullableType ty ->
-            // fun field -> if field.HasValue then {serializeNode ty} field.Value else JsonValue.Create null
-            let inner, innerIsJsonNode = serializeNode ty
-
-            SynExpr.applyFunction inner (SynExpr.createLongIdent [ "field" ; "Value" ])
-            |> SynExpr.upcast' (SynType.createLongIdent' [ "System" ; "Text" ; "Json" ; "Nodes" ; "JsonNode" ])
-            |> SynExpr.ifThenElse (SynExpr.createLongIdent [ "field" ; "HasValue" ]) (jsonNull ())
-            |> SynExpr.createLambda "field"
-            |> fun e -> e, innerIsJsonNode
-        | OptionType ty ->
-            // fun field -> match field with | None -> JsonValue.Create null | Some v -> {serializeNode ty} field
-            let noneClause = jsonNull () |> SynMatchClause.create (SynPat.named "None")
-
-            let someClause =
-                let inner, innerIsJsonNode = serializeNode ty
-                let target = SynExpr.applyFunction inner (SynExpr.createIdent "field")
-
-                if innerIsJsonNode then
-                    target
-                else
-                    target
-                    |> SynExpr.paren
-                    |> SynExpr.upcast' (SynType.createLongIdent' [ "System" ; "Text" ; "Json" ; "Nodes" ; "JsonNode" ])
-                |> SynMatchClause.create (SynPat.nameWithArgs "Some" [ SynPat.named "field" ])
-
-            [ noneClause ; someClause ]
-            |> SynExpr.createMatch (SynExpr.createIdent "field")
-            |> SynExpr.createLambda "field"
-            |> fun e -> e, true
         | ArrayType ty
         | ListType ty ->
             // fun field ->
             //     let arr = JsonArray ()
             //     for mem in field do arr.Add ({serializeNode} mem)
             //     arr
+            let isNullableChild =
+                match JsonNodeWithNullability.Identify ty with
+                | CannotBeNull -> false
+                | Nullable -> true
+
             [
                 SynExpr.ForEach (
                     DebugPointAtFor.Yes range0,
@@ -94,7 +160,17 @@ module internal JsonSerializeGenerator =
                     SynExpr.createIdent "field",
                     SynExpr.applyFunction
                         (SynExpr.createLongIdent [ "arr" ; "Add" ])
-                        (SynExpr.paren (SynExpr.applyFunction (fst (serializeNode ty)) (SynExpr.createIdent "mem"))),
+                        (SynExpr.paren (
+                            SynExpr.applyFunction
+                                (fst (
+                                    (if isNullableChild then
+                                         serializeNodeNullable
+                                     else
+                                         serializeNodeNonNullable)
+                                        ty
+                                ))
+                                (SynExpr.createIdent "mem")
+                        )),
                     range0
                 )
                 SynExpr.createIdent "arr"
@@ -108,15 +184,28 @@ module internal JsonSerializeGenerator =
                 ]
             |> SynExpr.createLambda "field"
             |> fun e -> e, false
-        | IDictionaryType (_keyType, valueType)
-        | DictionaryType (_keyType, valueType)
-        | IReadOnlyDictionaryType (_keyType, valueType)
-        | MapType (_keyType, valueType) ->
+        | IDictionaryType (keyType, valueType)
+        | DictionaryType (keyType, valueType)
+        | IReadOnlyDictionaryType (keyType, valueType)
+        | MapType (keyType, valueType) ->
             // fun field ->
             //    let ret = JsonObject ()
             //    for (KeyValue(key, value)) in field do
             //        ret.Add (key.ToString (), {serializeNode} value)
             //    ret
+            let isNullableValueField =
+                match JsonNodeWithNullability.Identify valueType with
+                | CannotBeNull -> false
+                | Nullable -> true
+
+            // TODO: this is a bit dubious, because user-defined types will
+            // by default have non-null ToString
+            let keyTypeHasNonNullToString =
+                match keyType with
+                | String
+                | Uri -> true
+                | _ -> false
+
             [
                 SynExpr.ForEach (
                     DebugPointAtFor.Yes range0,
@@ -129,10 +218,33 @@ module internal JsonSerializeGenerator =
                         (SynExpr.createLongIdent [ "ret" ; "Add" ])
                         (SynExpr.tuple
                             [
-                                SynExpr.createLongIdent [ "key" ; "ToString" ]
-                                |> SynExpr.applyTo (SynExpr.CreateConst ())
-                                SynExpr.applyFunction (fst (serializeNode valueType)) (SynExpr.createIdent "value")
-                            ]),
+                                SynExpr.createIdent "key"
+                                |> if keyTypeHasNonNullToString then
+                                       id
+                                   else
+                                       assertNotNull
+                                           (Ident.create "key")
+                                           (SynExpr.CreateConst
+                                               "A map key unexpectedly yielded null when we `ToString`'ed it. Map keys must yield non-null strings on `ToString`.")
+
+                                SynExpr.applyFunction
+                                    (fst (
+                                        (if isNullableValueField then
+                                             serializeNodeNullable
+                                         else
+                                             serializeNodeNonNullable)
+                                            valueType
+                                    ))
+                                    (SynExpr.createIdent "value")
+                            ])
+                    |> SynExpr.createLet
+                        [
+                            SynBinding.basic
+                                [ Ident.create "key" ]
+                                []
+                                (SynExpr.createLongIdent [ "key" ; "ToString" ]
+                                 |> SynExpr.applyTo (SynExpr.CreateConst ()))
+                        ],
                     range0
                 )
                 SynExpr.createIdent "ret"
@@ -147,7 +259,7 @@ module internal JsonSerializeGenerator =
             |> SynExpr.createLambda "field"
             |> fun e -> e, false
         | JsonNode -> SynExpr.createIdent "id", true
-        | Unit ->
+        | UnitType ->
             SynExpr.createLambda
                 "value"
                 (SynExpr.createLongIdent [ "System" ; "Text" ; "Json" ; "Nodes" ; "JsonObject" ]
@@ -165,13 +277,24 @@ module internal JsonSerializeGenerator =
     /// propertyName is probably a string literal, but it could be a [<Literal>] variable
     /// `node.Add ({propertyName}, {toJsonNode})`
     let createSerializeRhsRecord (propertyName : SynExpr) (fieldId : Ident) (fieldType : SynType) : SynExpr =
-        [
-            propertyName
-            SynExpr.pipeThroughFunction
-                (fst (serializeNode fieldType))
-                (SynExpr.createLongIdent' [ Ident.create "input" ; fieldId ])
-            |> SynExpr.paren
-        ]
+        let isNullableField =
+            match JsonNodeWithNullability.Identify fieldType with
+            | CannotBeNull -> false
+            | Nullable -> true
+
+        let serialised =
+            if isNullableField then
+                let value =
+                    serializeNodeNullable fieldType
+                    |> fst
+                    |> SynExpr.pipeThroughFunction (SynExpr.createLongIdent [ "Option" ; "toObj" ])
+
+                SynExpr.pipeThroughFunction value (SynExpr.createLongIdent' [ Ident.create "input" ; fieldId ])
+            else
+                let value = serializeNodeNonNullable fieldType |> fst
+                SynExpr.pipeThroughFunction value (SynExpr.createLongIdent' [ Ident.create "input" ; fieldId ])
+
+        [ propertyName ; SynExpr.paren serialised ]
         |> SynExpr.tuple
         |> SynExpr.applyFunction (SynExpr.createLongIdent [ "node" ; "Add" ])
 
@@ -179,8 +302,7 @@ module internal JsonSerializeGenerator =
         let propertyNameAttr =
             attrs
             |> List.tryFind (fun attr ->
-                (SynLongIdent.toString attr.TypeName)
-                    .EndsWith ("JsonPropertyName", StringComparison.Ordinal)
+                (SynLongIdent.toString attr.TypeName).EndsWith ("JsonPropertyName", StringComparison.Ordinal)
             )
 
         match propertyNameAttr with
@@ -197,8 +319,7 @@ module internal JsonSerializeGenerator =
     let getIsJsonExtension (attrs : SynAttribute list) : bool =
         attrs
         |> List.tryFind (fun attr ->
-            (SynLongIdent.toString attr.TypeName)
-                .EndsWith ("JsonExtensionData", StringComparison.Ordinal)
+            (SynLongIdent.toString attr.TypeName).EndsWith ("JsonExtensionData", StringComparison.Ordinal)
         )
         |> Option.isSome
 
@@ -279,7 +400,10 @@ module internal JsonSerializeGenerator =
                     | DictionaryType (String, v) -> v
                     | _ -> failwith "Expected JsonExtensionData to be a Dictionary<string, something>"
 
-                let serialise = fst (serializeNode valType)
+                let serialise =
+                    match JsonNodeWithNullability.Identify valType with
+                    | CannotBeNull -> fst (serializeNodeNonNullable valType)
+                    | Nullable -> fst (serializeNodeNullable valType)
 
                 SynExpr.createIdent "node"
                 |> SynExpr.callMethodArg
@@ -344,7 +468,15 @@ module internal JsonSerializeGenerator =
                     let propertyName = getPropertyName (Option.get fieldData.Ident) fieldData.Attrs
 
                     let node =
-                        SynExpr.applyFunction (fst (serializeNode fieldData.Type)) (SynExpr.createIdent caseName)
+                        match JsonNodeWithNullability.Identify fieldData.Type with
+                        | CannotBeNull ->
+                            SynExpr.applyFunction
+                                (fst (serializeNodeNonNullable fieldData.Type))
+                                (SynExpr.createIdent caseName)
+                        | Nullable ->
+                            SynExpr.applyFunction
+                                (fst (serializeNodeNullable fieldData.Type))
+                                (SynExpr.createIdent caseName)
 
                     [ propertyName ; node ]
                     |> SynExpr.tuple
@@ -519,17 +651,21 @@ type JsonSerializeGenerator () =
         member _.ValidInputExtensions = [ ".fs" ]
 
         member _.Generate (context : GeneratorContext) =
+            let targetedTypes =
+                MyriadParamParser.render context.AdditionalParameters
+                |> Map.map (fun _ v -> v.Split '!' |> Array.toList |> List.map DesiredGenerator.Parse)
+
             let ast, _ =
                 Ast.fromFilename context.InputFilename |> Async.RunSynchronously |> Array.head
 
             let relevantTypes =
-                Ast.extractTypeDefn ast
+                Ast.getTypes ast
                 |> List.map (fun (name, defns) ->
                     defns
                     |> List.choose (fun defn ->
-                        if Ast.isRecord defn then Some defn
-                        elif Ast.isDu defn then Some defn
-                        elif AstHelper.isEnum defn then Some defn
+                        if SynTypeDefn.isRecord defn then Some defn
+                        elif SynTypeDefn.isDu defn then Some defn
+                        elif SynTypeDefn.isEnum defn then Some defn
                         else None
                     )
                     |> fun defns -> name, defns
@@ -540,8 +676,29 @@ type JsonSerializeGenerator () =
                 |> List.choose (fun (ns, types) ->
                     types
                     |> List.choose (fun typeDef ->
-                        match Ast.getAttribute<JsonSerializeAttribute> typeDef with
-                        | None -> None
+                        match SynTypeDefn.getAttribute typeof<JsonSerializeAttribute>.Name typeDef with
+                        | None ->
+                            let name = SynTypeDefn.getName typeDef |> List.map _.idText |> String.concat "."
+
+                            match Map.tryFind name targetedTypes with
+                            | Some desired ->
+                                desired
+                                |> List.tryPick (fun generator ->
+                                    match generator with
+                                    | DesiredGenerator.JsonSerialize arg ->
+                                        let spec =
+                                            {
+                                                ExtensionMethods =
+                                                    arg
+                                                    |> Option.defaultValue
+                                                        JsonSerializeAttribute.DefaultIsExtensionMethod
+                                            }
+
+                                        Some (typeDef, spec)
+                                    | _ -> None
+                                )
+                            | _ -> None
+
                         | Some attr ->
                             let arg =
                                 match SynExpr.stripOptionalParen attr.ArgExpr with

WoofWare.Myriad.Plugins/Measure.fs

@@ -1,6 +1,7 @@
 namespace WoofWare.Myriad.Plugins
 
 open Fantomas.FCS.Syntax
+open WoofWare.Whippet.Fantomas
 
 [<RequireQualifiedAccess>]
 module internal Measure =
@@ -20,5 +21,4 @@ module internal Measure =
         | l ->
             let l = String.concat "." l
             failwith $"unrecognised type for measure: %s{l}"
-
         |> SynExpr.createLongIdent

WoofWare.Myriad.Plugins/MyriadParamParser.fs

@@ -0,0 +1,42 @@
+namespace WoofWare.Myriad.Plugins
+
+open System.Collections.Generic
+
+[<RequireQualifiedAccess>]
+module internal MyriadParamParser =
+    (*
+      An apparent bug in Myriad's argument parsing means that this:
+
+        <MyriadParams>
+            <Foo>bar</Foo>
+            <Baz>quux</Baz>
+        </MyriadParams>
+
+      leads to this:
+
+        Foo = "bar;Baz=quux"
+
+      I'm not going to put effort into fixing Myriad, though, because I want
+      to build something much more powerful instead.
+    *)
+
+    /// Call this with `context.AdditionalParameters`.
+    let render (pars : IDictionary<string, string>) : Map<string, string> =
+        match pars.Count with
+        | 0 -> Map.empty
+        | 1 ->
+            let (KeyValue (key, value)) = pars |> Seq.exactlyOne
+
+            match value.Split ';' |> Seq.toList with
+            | [] -> failwith "LOGIC ERROR"
+            | value :: rest ->
+                rest
+                |> Seq.map (fun v ->
+                    let split = v.Split '='
+                    split.[0], String.concat "=" split.[1..]
+                )
+                |> Seq.append (Seq.singleton (key, value))
+                |> Map.ofSeq
+        | _ ->
+            // assume the Myriad bug is fixed!
+            pars |> Seq.map (fun (KeyValue (k, v)) -> k, v) |> Map.ofSeq

WoofWare.Myriad.Plugins/Parameters.fs

@@ -0,0 +1,23 @@
+namespace WoofWare.Myriad.Plugins
+
+type internal DesiredGenerator =
+    | InterfaceMock of isInternal : bool option
+    | JsonParse of extensionMethod : bool option
+    | JsonSerialize of extensionMethod : bool option
+    | HttpClient of extensionMethod : bool option
+
+    static member Parse (s : string) =
+        match s with
+        | "GenerateMock" -> DesiredGenerator.InterfaceMock None
+        | "GenerateMock(true)" -> DesiredGenerator.InterfaceMock (Some true)
+        | "GenerateMock(false)" -> DesiredGenerator.InterfaceMock (Some false)
+        | "JsonParse" -> DesiredGenerator.JsonParse None
+        | "JsonParse(true)" -> DesiredGenerator.JsonParse (Some true)
+        | "JsonParse(false)" -> DesiredGenerator.JsonParse (Some false)
+        | "JsonSerialize" -> DesiredGenerator.JsonSerialize None
+        | "JsonSerialize(true)" -> DesiredGenerator.JsonSerialize (Some true)
+        | "JsonSerialize(false)" -> DesiredGenerator.JsonSerialize (Some false)
+        | "HttpClient" -> DesiredGenerator.HttpClient None
+        | "HttpClient(true)" -> DesiredGenerator.HttpClient (Some true)
+        | "HttpClient(false)" -> DesiredGenerator.HttpClient (Some false)
+        | _ -> failwith $"Failed to parse as a generator specification: %s{s}"

WoofWare.Myriad.Plugins/Primitives.fs

@@ -1,32 +0,0 @@
-namespace WoofWare.Myriad.Plugins
-
-open Fantomas.FCS.Syntax
-open Fantomas.FCS.Text.Range
-
-[<RequireQualifiedAccess>]
-module internal Primitives =
-    /// Given e.g. "byte", returns "System.Byte".
-    let qualifyType (typeName : string) : LongIdent option =
-        match typeName with
-        | "float32"
-        | "single" -> [ "System" ; "Single" ] |> Some
-        | "float"
-        | "double" -> [ "System" ; "Double" ] |> Some
-        | "byte"
-        | "uint8" -> [ "System" ; "Byte" ] |> Some
-        | "sbyte"
-        | "int8" -> [ "System" ; "SByte" ] |> Some
-        | "int16" -> [ "System" ; "Int16" ] |> Some
-        | "int"
-        | "int32" -> [ "System" ; "Int32" ] |> Some
-        | "int64" -> [ "System" ; "Int64" ] |> Some
-        | "uint16" -> [ "System" ; "UInt16" ] |> Some
-        | "uint"
-        | "uint32" -> [ "System" ; "UInt32" ] |> Some
-        | "uint64" -> [ "System" ; "UInt64" ] |> Some
-        | "char" -> [ "System" ; "Char" ] |> Some
-        | "decimal" -> [ "System" ; "Decimal" ] |> Some
-        | "string" -> [ "System" ; "String" ] |> Some
-        | "bool" -> [ "System" ; "Boolean" ] |> Some
-        | _ -> None
-        |> Option.map (List.map (fun i -> (Ident (i, range0))))

WoofWare.Myriad.Plugins/RemoveOptionsGenerator.fs

@@ -1,7 +1,9 @@
 namespace WoofWare.Myriad.Plugins
 
+open System
 open Fantomas.FCS.Syntax
 open Fantomas.FCS.Xml
+open WoofWare.Whippet.Fantomas
 
 [<RequireQualifiedAccess>]
 module internal RemoveOptionsGenerator =
@@ -58,7 +60,7 @@ module internal RemoveOptionsGenerator =
                 Attributes = []
             }
 
-        let typeDecl = AstHelper.defineRecordType record
+        let typeDecl = RecordType.ToAst record
 
         SynModuleDecl.Types ([ typeDecl ], range0)
 
@@ -95,7 +97,7 @@ module internal RemoveOptionsGenerator =
 
                 SynLongIdent.createI fieldData.Ident, body
             )
-            |> AstHelper.instantiateRecord
+            |> SynExpr.createRecord None
 
         SynBinding.basic
             [ functionName ]
@@ -145,41 +147,31 @@ type RemoveOptionsGenerator () =
             let ast, _ =
                 Ast.fromFilename context.InputFilename |> Async.RunSynchronously |> Array.head
 
-            let records = Ast.extractRecords ast
+            let records = Ast.getRecords ast
 
             let namespaceAndRecords =
                 records
-                |> List.choose (fun (ns, types) ->
-                    match types |> List.filter Ast.hasAttribute<RemoveOptionsAttribute> with
-                    | [] -> None
-                    | types ->
-                        let types =
-                            types
-                            |> List.map (fun ty ->
-                                match ty with
-                                | SynTypeDefn.SynTypeDefn (sci,
-                                                           SynTypeDefnRepr.Simple (SynTypeDefnSimpleRepr.Record (access,
-                                                                                                                 fields,
-                                                                                                                 _),
-                                                                                   _),
-                                                           smd,
-                                                           smdo,
-                                                           _,
-                                                           _) -> RecordType.OfRecord sci smd access fields
-                                | _ -> failwith "unexpectedly not a record"
-                            )
-
-                        Some (ns, types)
+                |> List.collect (fun (ns, ty) ->
+                    ty
+                    |> List.filter (fun record ->
+                        record.Attributes
+                        |> List.exists (fun attr ->
+                            attr.TypeName.LongIdent
+                            |> List.last
+                            |> _.idText
+                            |> fun s ->
+                                if s.EndsWith ("Attribute", StringComparison.Ordinal) then
+                                    s
+                                else
+                                    $"%s{s}Attribute"
+                            |> (=) typeof<RemoveOptionsAttribute>.Name
+                        )
+                    )
+                    |> List.map (fun ty -> ns, ty)
                 )
 
             let modules =
                 namespaceAndRecords
-                |> List.collect (fun (ns, records) ->
-                    records
-                    |> List.map (fun record ->
-                        let recordModule = RemoveOptionsGenerator.createRecordModule ns record
-                        recordModule
-                    )
-                )
+                |> List.map (fun (ns, record) -> RemoveOptionsGenerator.createRecordModule ns record)
 
             Output.Ast modules

WoofWare.Myriad.Plugins/SurfaceBaseline.txt

@@ -292,27 +292,4 @@ WoofWare.Myriad.Plugins.SwaggerParameter.In [property]: [read-only] WoofWare.Myr
 WoofWare.Myriad.Plugins.SwaggerParameter.Name [property]: [read-only] string
 WoofWare.Myriad.Plugins.SwaggerParameter.Parse [static method]: System.Text.Json.Nodes.JsonObject -> WoofWare.Myriad.Plugins.SwaggerParameter
 WoofWare.Myriad.Plugins.SwaggerParameter.Required [property]: [read-only] bool option
-WoofWare.Myriad.Plugins.SwaggerParameter.Type [property]: [read-only] WoofWare.Myriad.Plugins.Definition
-WoofWare.Myriad.Plugins.SynFieldData`1 inherit obj
-WoofWare.Myriad.Plugins.SynFieldData`1..ctor [constructor]: (Fantomas.FCS.Syntax.SynAttribute list, 'Ident, Fantomas.FCS.Syntax.SynType)
-WoofWare.Myriad.Plugins.SynFieldData`1.Attrs [property]: [read-only] Fantomas.FCS.Syntax.SynAttribute list
-WoofWare.Myriad.Plugins.SynFieldData`1.get_Attrs [method]: unit -> Fantomas.FCS.Syntax.SynAttribute list
-WoofWare.Myriad.Plugins.SynFieldData`1.get_Ident [method]: unit -> 'Ident
-WoofWare.Myriad.Plugins.SynFieldData`1.get_Type [method]: unit -> Fantomas.FCS.Syntax.SynType
-WoofWare.Myriad.Plugins.SynFieldData`1.Ident [property]: [read-only] 'Ident
-WoofWare.Myriad.Plugins.SynFieldData`1.Type [property]: [read-only] Fantomas.FCS.Syntax.SynType
-WoofWare.Myriad.Plugins.UnionCase inherit obj
-WoofWare.Myriad.Plugins.UnionCase.mapIdentFields [static method]: ('a -> 'b) -> 'a WoofWare.Myriad.Plugins.UnionCase -> 'b WoofWare.Myriad.Plugins.UnionCase
-WoofWare.Myriad.Plugins.UnionCase.ofSynUnionCase [static method]: Fantomas.FCS.Syntax.SynUnionCase -> Fantomas.FCS.Syntax.Ident option WoofWare.Myriad.Plugins.UnionCase
-WoofWare.Myriad.Plugins.UnionCase`1 inherit obj
-WoofWare.Myriad.Plugins.UnionCase`1..ctor [constructor]: (Fantomas.FCS.Syntax.Ident, Fantomas.FCS.Xml.PreXmlDoc option, Fantomas.FCS.Syntax.SynAccess option, Fantomas.FCS.Syntax.SynAttribute list, 'ident WoofWare.Myriad.Plugins.SynFieldData list)
-WoofWare.Myriad.Plugins.UnionCase`1.Access [property]: [read-only] Fantomas.FCS.Syntax.SynAccess option
-WoofWare.Myriad.Plugins.UnionCase`1.Attributes [property]: [read-only] Fantomas.FCS.Syntax.SynAttribute list
-WoofWare.Myriad.Plugins.UnionCase`1.Fields [property]: [read-only] 'ident WoofWare.Myriad.Plugins.SynFieldData list
-WoofWare.Myriad.Plugins.UnionCase`1.get_Access [method]: unit -> Fantomas.FCS.Syntax.SynAccess option
-WoofWare.Myriad.Plugins.UnionCase`1.get_Attributes [method]: unit -> Fantomas.FCS.Syntax.SynAttribute list
-WoofWare.Myriad.Plugins.UnionCase`1.get_Fields [method]: unit -> 'ident WoofWare.Myriad.Plugins.SynFieldData list
-WoofWare.Myriad.Plugins.UnionCase`1.get_Name [method]: unit -> Fantomas.FCS.Syntax.Ident
-WoofWare.Myriad.Plugins.UnionCase`1.get_XmlDoc [method]: unit -> Fantomas.FCS.Xml.PreXmlDoc option
-WoofWare.Myriad.Plugins.UnionCase`1.Name [property]: [read-only] Fantomas.FCS.Syntax.Ident
-WoofWare.Myriad.Plugins.UnionCase`1.XmlDoc [property]: [read-only] Fantomas.FCS.Xml.PreXmlDoc option
+WoofWare.Myriad.Plugins.SwaggerParameter.Type [property]: [read-only] WoofWare.Myriad.Plugins.Definition

WoofWare.Myriad.Plugins/Swagger.fs

@@ -198,7 +198,14 @@ and ObjectTypeDefinition =
                 |> Map.ofSeq
                 |> Some
 
-        let example = asObjOpt node "example"
+        let example =
+            match node.["example"] with
+            | null -> None
+            | :? JsonObject as o -> Some o
+            | _ ->
+                // Gitea returns a stringified and malformed JSON object here.
+                // Don't throw; just omit.
+                None
 
         let required = asArrOpt'<string> node "required"
 

WoofWare.Myriad.Plugins/SwaggerClientGenerator.fs

@@ -1,11 +1,11 @@
 namespace WoofWare.Myriad.Plugins
 
 open System.Collections.Generic
-open System.IO
 open System.Threading
 open Fantomas.FCS.Syntax
 open Fantomas.FCS.Xml
 open Fantomas.FCS.Text.Range
+open WoofWare.Whippet.Fantomas
 
 type internal SwaggerClientConfig =
     {
@@ -18,6 +18,7 @@ type internal SwaggerClientConfig =
 type internal Produces =
     // TODO: this will cope with decoding JSON, plain text, etc
     | Produces of string
+    | OctetStream
 
 type internal Endpoint =
     {
@@ -46,16 +47,8 @@ type internal Types =
 
 [<RequireQualifiedAccess>]
 module internal SwaggerClientGenerator =
-    let outputFile = FileInfo "/tmp/output.txt"
 
-    // do
-    //     use _ = File.Create outputFile.FullName
-    //     ()
-
-    let log (line : string) =
-        // use w = outputFile.AppendText ()
-        // w.WriteLine line
-        ()
+    let internal log (_ : string) = ()
 
     let renderType (types : Types) (defn : Definition) : SynType option =
         match types.ByDefinition.TryGetValue defn with
@@ -476,6 +469,15 @@ module internal SwaggerClientGenerator =
                             (SynLongIdent.createS' [ "RestEase" ; "Header" ])
                             // Gitea, at least, starts with a `/`, which `Uri` then takes to indicate an absolute path.
                             (SynExpr.tuple [ SynExpr.CreateConst "Content-Type" ; SynExpr.CreateConst contentType ])
+                    | Produces.OctetStream ->
+                        SynAttribute.create
+                            (SynLongIdent.createS' [ "RestEase" ; "Header" ])
+                            // Gitea, at least, starts with a `/`, which `Uri` then takes to indicate an absolute path.
+                            (SynExpr.tuple
+                                [
+                                    SynExpr.CreateConst "Content-Type"
+                                    SynExpr.CreateConst "application/octet-stream"
+                                ])
                 ]
 
             returnType
@@ -511,6 +513,7 @@ module internal SwaggerClientGenerator =
         |> List.singleton
 
 open Myriad.Core
+open System.IO
 
 /// Myriad generator that stamps out an interface and class to access a Swagger-specified API.
 [<MyriadGenerator("swagger-client")>]
@@ -621,10 +624,11 @@ type SwaggerClientGenerator () =
 
                         let produces =
                             match endpoint.Produces with
-                            | None -> Produces "json"
+                            | None -> Produces.Produces "json"
                             | Some [] -> failwith $"API specified empty Produces: %s{path} (%O{method})"
-                            | Some [ MimeType "application/json" ] -> Produces "json"
-                            | Some [ MimeType (StartsWith "text/" t) ] -> Produces t
+                            | Some [ MimeType "application/octet-stream" ] -> Produces.OctetStream
+                            | Some [ MimeType "application/json" ] -> Produces.Produces "json"
+                            | Some [ MimeType (StartsWith "text/" t) ] -> Produces.Produces t
                             | Some [ MimeType s ] ->
                                 failwithf
                                     $"we don't support non-JSON Produces right now, got: %s{s} (%s{path} %O{method})"
@@ -672,31 +676,16 @@ type SwaggerClientGenerator () =
                 |> Seq.toList
 
             let config =
-                // Bug in Myriad, their arg parsing is borked.
-                let pars =
-                    context.AdditionalParameters
-                    |> Seq.map (fun (KeyValue (k, v)) -> k, v)
-                    |> Seq.toList
+                let pars = MyriadParamParser.render context.AdditionalParameters
 
                 let pars =
-                    match pars with
-                    | [] ->
-                        failwith "No parameters given. You must supply the <ClassName /> parameter in <MyriadParams />."
-                    | [ key, value ] ->
-                        let semicolon = value.IndexOf ';'
+                    pars
+                    |> Map.toSeq
+                    |> Seq.map (fun (k, v) -> k.ToUpperInvariant (), v)
+                    |> Map.ofSeq
 
-                        if semicolon >= 0 then
-                            let equals = value.IndexOf ('=', semicolon)
-
-                            [
-                                key, value.Substring (0, semicolon)
-                                value.Substring (semicolon + 1, equals - semicolon - 1), value.Substring (equals + 1)
-                            ]
-                        else
-                            [ key, value ]
-                    | rest -> rest
-                    |> List.map (fun (key, value) -> key.ToUpperInvariant (), value)
-                    |> Map.ofList
+                if pars.IsEmpty then
+                    failwith "No parameters given. You must supply the <ClassName /> parameter in <MyriadParams />."
 
                 let createMock =
                     match Map.tryFind "GENERATEMOCKVISIBILITY" pars with

WoofWare.Myriad.Plugins/SynExpr/CompExpr.fs

@@ -1,49 +0,0 @@
-namespace WoofWare.Myriad.Plugins
-
-open Fantomas.FCS.Syntax
-
-type internal CompExprBinding =
-    | LetBang of varName : string * rhs : SynExpr
-    | Let of varName : string * rhs : SynExpr
-    | Use of varName : string * rhs : SynExpr
-    | Do of body : SynExpr
-
-(*
-Potential API!
-type internal CompExprBindings =
-    private
-        {
-            /// These are stored in reverse.
-            Bindings : CompExprBinding list
-            CompExprName : string
-        }
-
-[<RequireQualifiedAccess>]
-module internal CompExprBindings =
-    let make (name : string) : CompExprBindings =
-        {
-            Bindings = []
-            CompExprName = name
-        }
-
-    let thenDo (body : SynExpr) (bindings : CompExprBindings) =
-        { bindings with
-            Bindings = (Do body :: bindings.Bindings)
-        }
-
-    let thenLet (varName : string) (value : SynExpr) (bindings : CompExprBindings) =
-        { bindings with
-            Bindings = (Let (varName, value) :: bindings.Bindings)
-        }
-
-    let thenLetBang (varName : string) (value : SynExpr) (bindings : CompExprBindings) =
-        { bindings with
-            Bindings = (LetBang (varName, value) :: bindings.Bindings)
-        }
-
-
-    let thenUse (varName : string) (value : SynExpr) (bindings : CompExprBindings) =
-        { bindings with
-            Bindings = (LetBang (varName, value) :: bindings.Bindings)
-        }
-*)

WoofWare.Myriad.Plugins/SynExpr/Ident.fs

@@ -1,65 +0,0 @@
-namespace WoofWare.Myriad.Plugins
-
-open System
-open System.Text
-open System.Text.RegularExpressions
-open Fantomas.FCS.Syntax
-open Fantomas.FCS.Text.Range
-
-[<RequireQualifiedAccess>]
-module internal Ident =
-    let inline create (s : string) = Ident (s, range0)
-
-    /// Fantomas bug, perhaps? "type" is not rendered as ``type``, although the ASTs are identical
-    /// apart from the ranges?
-    /// Awful hack: here is a function that does this sort of thing.
-    let createSanitisedParamName (s : string) =
-        match s with
-        | "type" -> create "type'"
-        | "private" -> create "private'"
-        | _ ->
-
-        let result = StringBuilder ()
-
-        for i = 0 to s.Length - 1 do
-            if Char.IsLetter s.[i] then
-                result.Append s.[i] |> ignore<StringBuilder>
-            elif Char.IsNumber s.[i] then
-                if result.Length > 0 then
-                    result.Append s.[i] |> ignore<StringBuilder>
-            elif s.[i] = '_' || s.[i] = '-' then
-                result.Append '_' |> ignore<StringBuilder>
-            else
-                failwith $"could not convert to ident: %s{s}"
-
-        create (result.ToString ())
-
-    let private alnum = Regex @"^[a-zA-Z][a-zA-Z0-9]*$"
-
-    let createSanitisedTypeName (s : string) =
-        let result = StringBuilder ()
-        let mutable capitalize = true
-
-        for i = 0 to s.Length - 1 do
-            if Char.IsLetter s.[i] then
-                if capitalize then
-                    result.Append (Char.ToUpperInvariant s.[i]) |> ignore<StringBuilder>
-                    capitalize <- false
-                else
-                    result.Append s.[i] |> ignore<StringBuilder>
-            elif Char.IsNumber s.[i] then
-                if result.Length > 0 then
-                    result.Append s.[i] |> ignore<StringBuilder>
-            elif s.[i] = '_' then
-                capitalize <- true
-
-        if result.Length = 0 then
-            failwith $"String %s{s} was not suitable as a type identifier"
-
-        Ident (result.ToString (), range0)
-
-    let lowerFirstLetter (x : Ident) : Ident =
-        let result = StringBuilder x.idText.Length
-        result.Append (Char.ToLowerInvariant x.idText.[0]) |> ignore
-        result.Append x.idText.[1..] |> ignore
-        create ((result : StringBuilder).ToString ())

WoofWare.Myriad.Plugins/SynExpr/PreXmlDoc.fs

@@ -1,17 +0,0 @@
-namespace WoofWare.Myriad.Plugins
-
-open Fantomas.FCS.Xml
-open Fantomas.FCS.Text.Range
-
-[<RequireQualifiedAccess>]
-module internal PreXmlDoc =
-    let create (s : string) : PreXmlDoc =
-        let s = s.Split "\n"
-
-        for i = 0 to s.Length - 1 do
-            s.[i] <- " " + s.[i]
-
-        PreXmlDoc.Create (s, range0)
-
-    let create' (s : string seq) : PreXmlDoc =
-        PreXmlDoc.Create (Array.ofSeq s, range0)

WoofWare.Myriad.Plugins/SynExpr/SynArgPats.fs

@@ -1,30 +0,0 @@
-namespace WoofWare.Myriad.Plugins
-
-open Fantomas.FCS.Syntax
-open Fantomas.FCS.Text.Range
-
-[<RequireQualifiedAccess>]
-module internal SynArgPats =
-    let createNamed (caseNames : string list) : SynArgPats =
-        match caseNames.Length with
-        | 0 -> SynArgPats.Pats []
-        | 1 ->
-            SynPat.Named (SynIdent.createS caseNames.[0], false, None, range0)
-            |> List.singleton
-            |> SynArgPats.Pats
-        | len ->
-            caseNames
-            |> List.map (fun name -> SynPat.Named (SynIdent.createS name, false, None, range0))
-            |> fun t -> SynPat.Tuple (false, t, List.replicate (len - 1) range0, range0)
-            |> fun t -> SynPat.Paren (t, range0)
-            |> List.singleton
-            |> SynArgPats.Pats
-
-    let create (pats : SynPat list) : SynArgPats =
-        match pats.Length with
-        | 0 -> SynArgPats.Pats []
-        | 1 -> [ pats.[0] ] |> SynArgPats.Pats
-        | len ->
-            SynPat.Paren (SynPat.Tuple (false, pats, List.replicate (len - 1) range0, range0), range0)
-            |> List.singleton
-            |> SynArgPats.Pats

WoofWare.Myriad.Plugins/SynExpr/SynAttribute.fs

@@ -1,27 +0,0 @@
-namespace WoofWare.Myriad.Plugins
-
-open Fantomas.FCS.Syntax
-open Fantomas.FCS.Text.Range
-
-[<RequireQualifiedAccess>]
-module internal SynAttribute =
-    let inline create (typeName : SynLongIdent) (arg : SynExpr) : SynAttribute =
-        {
-            TypeName = typeName
-            ArgExpr = arg
-            Target = None
-            AppliesToGetterAndSetter = false
-            Range = range0
-        }
-
-    let internal compilationRepresentation : SynAttribute =
-        [ "CompilationRepresentationFlags" ; "ModuleSuffix" ]
-        |> SynExpr.createLongIdent
-        |> SynExpr.paren
-        |> create (SynLongIdent.createS "CompilationRepresentation")
-
-    let internal requireQualifiedAccess : SynAttribute =
-        create (SynLongIdent.createS "RequireQualifiedAccess") (SynExpr.CreateConst ())
-
-    let internal autoOpen : SynAttribute =
-        create (SynLongIdent.createS "AutoOpen") (SynExpr.CreateConst ())

WoofWare.Myriad.Plugins/SynExpr/SynAttributes.fs

@@ -1,15 +0,0 @@
-namespace WoofWare.Myriad.Plugins
-
-open Fantomas.FCS.Syntax
-open Fantomas.FCS.Text.Range
-
-[<RequireQualifiedAccess>]
-module internal SynAttributes =
-    let ofAttrs (attrs : SynAttribute list) : SynAttributes =
-        attrs
-        |> List.map (fun a ->
-            {
-                Attributes = [ a ]
-                Range = range0
-            }
-        )

WoofWare.Myriad.Plugins/SynExpr/SynBinding.fs

@@ -1,233 +0,0 @@
-namespace WoofWare.Myriad.Plugins
-
-open Fantomas.FCS.Syntax
-open Fantomas.FCS.SyntaxTrivia
-open Fantomas.FCS.Xml
-open Fantomas.FCS.Text.Range
-
-[<RequireQualifiedAccess>]
-module internal SynBinding =
-
-    let rec private stripParen (pat : SynPat) =
-        match pat with
-        | SynPat.Paren (p, _) -> stripParen p
-        | _ -> pat
-
-    let rec private getName (pat : SynPat) : Ident option =
-        match stripParen pat with
-        | SynPat.Named (SynIdent.SynIdent (name, _), _, _, _) -> Some name
-        | SynPat.Typed (pat, _, _) -> getName pat
-        | SynPat.LongIdent (SynLongIdent.SynLongIdent (longIdent, _, _), _, _, _, _, _) ->
-            match longIdent with
-            | [ x ] -> Some x
-            | _ -> failwithf "got long ident %O ; can only get the name of a long ident with one component" longIdent
-        | _ -> None
-
-    let private getArgInfo (pat : SynPat) : SynArgInfo list =
-        // TODO: this only copes with one layer of tupling
-        match stripParen pat with
-        | SynPat.Tuple (_, pats, _, _) -> pats |> List.map (fun pat -> SynArgInfo.SynArgInfo ([], false, getName pat))
-        | pat -> [ SynArgInfo.SynArgInfo (SynAttributes.Empty, false, getName pat) ]
-
-    let triviaZero (isMember : bool) =
-        {
-            SynBindingTrivia.EqualsRange = Some range0
-            InlineKeyword = None
-            LeadingKeyword =
-                if isMember then
-                    SynLeadingKeyword.Member range0
-                else
-                    SynLeadingKeyword.Let range0
-        }
-
-    let basic (name : LongIdent) (args : SynPat list) (body : SynExpr) : SynBinding =
-        let valInfo : SynValInfo =
-            args
-            |> List.map getArgInfo
-            |> fun x -> SynValInfo.SynValInfo (x, SynArgInfo.SynArgInfo ([], false, None))
-
-        SynBinding.SynBinding (
-            None,
-            SynBindingKind.Normal,
-            false,
-            false,
-            [],
-            PreXmlDoc.Empty,
-            SynValData.SynValData (None, valInfo, None),
-            SynPat.identWithArgs name (SynArgPats.Pats args),
-            None,
-            body,
-            range0,
-            DebugPointAtBinding.Yes range0,
-            triviaZero false
-        )
-
-    let withMutability (mut : bool) (binding : SynBinding) : SynBinding =
-        match binding with
-        | SynBinding (pat, kind, inl, _, attrs, xml, valData, headPat, returnInfo, expr, range, debugPoint, trivia) ->
-            SynBinding (pat, kind, inl, mut, attrs, xml, valData, headPat, returnInfo, expr, range, debugPoint, trivia)
-
-    let withRecursion (isRec : bool) (binding : SynBinding) : SynBinding =
-        match binding with
-        | SynBinding (pat, kind, inl, mut, attrs, xml, valData, headPat, returnInfo, expr, range, debugPoint, trivia) ->
-            let trivia =
-                { trivia with
-                    LeadingKeyword =
-                        match trivia.LeadingKeyword with
-                        | SynLeadingKeyword.Let _ ->
-                            if isRec then
-                                SynLeadingKeyword.LetRec (range0, range0)
-                            else
-                                trivia.LeadingKeyword
-                        | SynLeadingKeyword.LetRec _ ->
-                            if isRec then
-                                trivia.LeadingKeyword
-                            else
-                                trivia.LeadingKeyword
-                        | existing ->
-                            failwith
-                                $"WoofWare.Myriad doesn't yet let you adjust the recursion modifier on a binding with modifier %O{existing}"
-                }
-
-            SynBinding (pat, kind, inl, mut, attrs, xml, valData, headPat, returnInfo, expr, range, debugPoint, trivia)
-
-    let withAccessibility (acc : SynAccess option) (binding : SynBinding) : SynBinding =
-        match binding with
-        | SynBinding (_, kind, inl, mut, attrs, xml, valData, headPat, returnInfo, expr, range, debugPoint, trivia) ->
-            let headPat =
-                match headPat with
-                | SynPat.LongIdent (ident, extra, options, argPats, _, range) ->
-                    SynPat.LongIdent (ident, extra, options, argPats, acc, range)
-                | _ -> failwithf "unrecognised head pattern: %O" headPat
-
-            SynBinding (acc, kind, inl, mut, attrs, xml, valData, headPat, returnInfo, expr, range, debugPoint, trivia)
-
-    let withXmlDoc (doc : PreXmlDoc) (binding : SynBinding) : SynBinding =
-        match binding with
-        | SynBinding (acc, kind, inl, mut, attrs, _, valData, headPat, returnInfo, expr, range, debugPoint, trivia) ->
-            SynBinding (acc, kind, inl, mut, attrs, doc, valData, headPat, returnInfo, expr, range, debugPoint, trivia)
-
-    let withReturnAnnotation (ty : SynType) (binding : SynBinding) : SynBinding =
-        match binding with
-        | SynBinding (acc, kind, inl, mut, attrs, doc, valData, headPat, _, expr, range, debugPoint, trivia) ->
-            let retInfo =
-                SynBindingReturnInfo.SynBindingReturnInfo (
-                    ty,
-                    range0,
-                    [],
-                    {
-                        ColonRange = Some range0
-                    }
-                )
-
-            SynBinding (
-                acc,
-                kind,
-                inl,
-                mut,
-                attrs,
-                doc,
-                valData,
-                headPat,
-                Some retInfo,
-                expr,
-                range,
-                debugPoint,
-                trivia
-            )
-
-    let inline makeInline (binding : SynBinding) : SynBinding =
-        match binding with
-        | SynBinding (acc, kind, _, mut, attrs, doc, valData, headPat, ret, expr, range, debugPoint, trivia) ->
-            SynBinding (
-                acc,
-                kind,
-                true,
-                mut,
-                attrs,
-                doc,
-                valData,
-                headPat,
-                ret,
-                expr,
-                range,
-                debugPoint,
-                { trivia with
-                    InlineKeyword = Some range0
-                }
-            )
-
-    let inline makeNotInline (binding : SynBinding) : SynBinding =
-        match binding with
-        | SynBinding (acc, kind, _, mut, attrs, doc, valData, headPat, ret, expr, range, debugPoint, trivia) ->
-            SynBinding (
-                acc,
-                kind,
-                false,
-                mut,
-                attrs,
-                doc,
-                valData,
-                headPat,
-                ret,
-                expr,
-                range,
-                debugPoint,
-                { trivia with
-                    InlineKeyword = None
-                }
-            )
-
-    let inline setInline (isInline : bool) (binding : SynBinding) : SynBinding =
-        if isInline then
-            makeInline binding
-        else
-            makeNotInline binding
-
-    let makeStaticMember (binding : SynBinding) : SynBinding =
-        let memberFlags =
-            {
-                SynMemberFlags.IsInstance = false
-                SynMemberFlags.IsDispatchSlot = false
-                SynMemberFlags.IsOverrideOrExplicitImpl = false
-                SynMemberFlags.IsFinal = false
-                SynMemberFlags.GetterOrSetterIsCompilerGenerated = false
-                SynMemberFlags.MemberKind = SynMemberKind.Member
-            }
-
-        match binding with
-        | SynBinding (acc, kind, inl, mut, attrs, doc, valData, headPat, ret, expr, range, debugPoint, trivia) ->
-            let valData =
-                match valData with
-                | SynValData.SynValData (_, valInfo, _) -> SynValData.SynValData (Some memberFlags, valInfo, None)
-
-            let trivia =
-                { trivia with
-                    LeadingKeyword = SynLeadingKeyword.StaticMember (range0, range0)
-                }
-
-            SynBinding (acc, kind, inl, mut, attrs, doc, valData, headPat, ret, expr, range, debugPoint, trivia)
-
-    let makeInstanceMember (binding : SynBinding) : SynBinding =
-        let memberFlags =
-            {
-                SynMemberFlags.IsInstance = true
-                SynMemberFlags.IsDispatchSlot = false
-                SynMemberFlags.IsOverrideOrExplicitImpl = true
-                SynMemberFlags.IsFinal = false
-                SynMemberFlags.GetterOrSetterIsCompilerGenerated = false
-                SynMemberFlags.MemberKind = SynMemberKind.Member
-            }
-
-        match binding with
-        | SynBinding (acc, kind, inl, mut, attrs, doc, valData, headPat, ret, expr, range, debugPoint, trivia) ->
-            let valData =
-                match valData with
-                | SynValData.SynValData (_, valInfo, _) -> SynValData.SynValData (Some memberFlags, valInfo, None)
-
-            let trivia =
-                { trivia with
-                    LeadingKeyword = SynLeadingKeyword.Member range0
-                }
-
-            SynBinding (acc, kind, inl, mut, attrs, doc, valData, headPat, ret, expr, range, debugPoint, trivia)

WoofWare.Myriad.Plugins/SynExpr/SynComponentInfo.fs

@@ -1,50 +0,0 @@
-namespace WoofWare.Myriad.Plugins
-
-open Fantomas.FCS.Syntax
-open Fantomas.FCS.Xml
-open Fantomas.FCS.Text.Range
-
-[<RequireQualifiedAccess>]
-module internal SynComponentInfo =
-    let inline createLong (name : LongIdent) =
-        SynComponentInfo.SynComponentInfo ([], None, [], name, PreXmlDoc.Empty, false, None, range0)
-
-    let inline create (name : Ident) = createLong [ name ]
-
-    let inline withDocString (doc : PreXmlDoc) (i : SynComponentInfo) : SynComponentInfo =
-        match i with
-        | SynComponentInfo.SynComponentInfo (attrs, typars, constraints, name, _, postfix, access, range) ->
-            SynComponentInfo (attrs, typars, constraints, name, doc, postfix, access, range)
-
-    let inline setGenerics (typars : SynTyparDecls option) (i : SynComponentInfo) : SynComponentInfo =
-        match i with
-        | SynComponentInfo.SynComponentInfo (attrs, _, constraints, name, doc, postfix, access, range) ->
-            SynComponentInfo (attrs, typars, constraints, name, doc, postfix, access, range)
-
-    let inline withGenerics (typars : SynTyparDecl list) (i : SynComponentInfo) : SynComponentInfo =
-        let inner =
-            if typars.IsEmpty then
-                None
-            else
-                Some (SynTyparDecls.PostfixList (typars, [], range0))
-
-        setGenerics inner i
-
-    let inline setAccessibility (acc : SynAccess option) (i : SynComponentInfo) : SynComponentInfo =
-        match i with
-        | SynComponentInfo.SynComponentInfo (attrs, typars, constraints, name, doc, postfix, _, range) ->
-            SynComponentInfo.SynComponentInfo (attrs, typars, constraints, name, doc, postfix, acc, range)
-
-    let inline withAccessibility (acc : SynAccess) (i : SynComponentInfo) : SynComponentInfo =
-        setAccessibility (Some acc) i
-
-    let inline addAttributes (attrs : SynAttribute list) (i : SynComponentInfo) : SynComponentInfo =
-        match i with
-        | SynComponentInfo.SynComponentInfo (oldAttrs, typars, constraints, name, doc, postfix, acc, range) ->
-            let attrs =
-                {
-                    SynAttributeList.Attributes = attrs
-                    SynAttributeList.Range = range0
-                }
-
-            SynComponentInfo.SynComponentInfo ((attrs :: oldAttrs), typars, constraints, name, doc, postfix, acc, range)

WoofWare.Myriad.Plugins/SynExpr/SynExpr.fs

@@ -1,379 +0,0 @@
-namespace WoofWare.Myriad.Plugins
-
-open Fantomas.FCS.Syntax
-open Fantomas.FCS.SyntaxTrivia
-open Myriad.Core
-open Fantomas.FCS.Text.Range
-
-[<AutoOpen>]
-module internal SynExprExtensions =
-    type SynExpr with
-        static member CreateConst (s : string) : SynExpr =
-            SynExpr.Const (SynConst.String (s, SynStringKind.Regular, range0), range0)
-
-        static member CreateConst () : SynExpr = SynExpr.Const (SynConst.Unit, range0)
-
-        static member CreateConst (b : bool) : SynExpr = SynExpr.Const (SynConst.Bool b, range0)
-
-        static member CreateConst (c : char) : SynExpr =
-            // apparent Myriad bug: `IndexOf '?'` gets formatted as `IndexOf ?` which is clearly wrong
-            SynExpr.CreateApp (SynExpr.Ident (Ident.Create "char"), SynExpr.CreateConst (int c))
-            |> fun e -> SynExpr.Paren (e, range0, Some range0, range0)
-
-        static member CreateConst (i : int32) : SynExpr =
-            SynExpr.Const (SynConst.Int32 i, range0)
-
-[<RequireQualifiedAccess>]
-module internal SynExpr =
-
-    /// {f} {x}
-    let applyFunction (f : SynExpr) (x : SynExpr) : SynExpr = SynExpr.CreateApp (f, x)
-
-    /// {f} {x}
-    let inline applyTo (x : SynExpr) (f : SynExpr) : SynExpr = applyFunction f x
-
-    /// {expr} |> {func}
-    let pipeThroughFunction (func : SynExpr) (expr : SynExpr) : SynExpr =
-        SynExpr.CreateAppInfix (SynExpr.CreateLongIdent SynLongIdent.pipe, expr)
-        |> applyTo func
-
-    /// if {cond} then {trueBranch} else {falseBranch}
-    /// Note that this function puts the trueBranch last, for pipelining convenience:
-    /// we assume that the `else` branch is more like an error case and is less interesting.
-    let ifThenElse (cond : SynExpr) (falseBranch : SynExpr) (trueBranch : SynExpr) : SynExpr =
-        SynExpr.IfThenElse (
-            cond,
-            trueBranch,
-            Some falseBranch,
-            DebugPointAtBinding.Yes range0,
-            false,
-            range0,
-            {
-                IfKeyword = range0
-                IsElif = false
-                ThenKeyword = range0
-                ElseKeyword = Some range0
-                IfToThenRange = range0
-            }
-        )
-
-    /// try {body} with | {exc} as exc -> {handler}
-    let pipeThroughTryWith (exc : SynPat) (handler : SynExpr) (body : SynExpr) : SynExpr =
-        let clause =
-            SynMatchClause.create (SynPat.As (exc, SynPat.named "exc", range0)) handler
-
-        SynExpr.TryWith (
-            body,
-            [ clause ],
-            range0,
-            DebugPointAtTry.Yes range0,
-            DebugPointAtWith.Yes range0,
-            {
-                TryKeyword = range0
-                TryToWithRange = range0
-                WithKeyword = range0
-                WithToEndRange = range0
-            }
-        )
-
-    /// {a} = {b}
-    let equals (a : SynExpr) (b : SynExpr) =
-        SynExpr.CreateAppInfix (SynExpr.CreateLongIdent SynLongIdent.eq, a) |> applyTo b
-
-    /// {a} && {b}
-    let booleanAnd (a : SynExpr) (b : SynExpr) =
-        SynExpr.CreateAppInfix (SynExpr.CreateLongIdent SynLongIdent.booleanAnd, a)
-        |> applyTo b
-
-    /// {a} || {b}
-    let booleanOr (a : SynExpr) (b : SynExpr) =
-        SynExpr.CreateAppInfix (SynExpr.CreateLongIdent SynLongIdent.booleanOr, a)
-        |> applyTo b
-
-    /// {a} + {b}
-    let plus (a : SynExpr) (b : SynExpr) =
-        SynExpr.CreateAppInfix (
-            SynExpr.CreateLongIdent (
-                SynLongIdent.SynLongIdent (
-                    Ident.CreateLong "op_Addition",
-                    [],
-                    [ Some (IdentTrivia.OriginalNotation "+") ]
-                )
-            ),
-            a
-        )
-        |> applyTo b
-
-    /// {a} * {b}
-    let times (a : SynExpr) (b : SynExpr) =
-        SynExpr.CreateAppInfix (
-            SynExpr.CreateLongIdent (
-                SynLongIdent.SynLongIdent (
-                    Ident.CreateLong "op_Multiply",
-                    [],
-                    [ Some (IdentTrivia.OriginalNotation "*") ]
-                )
-            ),
-            a
-        )
-        |> applyTo b
-
-    let rec stripOptionalParen (expr : SynExpr) : SynExpr =
-        match expr with
-        | SynExpr.Paren (expr, _, _, _) -> stripOptionalParen expr
-        | expr -> expr
-
-    let dotGet (field : string) (obj : SynExpr) : SynExpr =
-        SynExpr.DotGet (
-            obj,
-            range0,
-            SynLongIdent.SynLongIdent (id = [ Ident.create field ], dotRanges = [], trivia = [ None ]),
-            range0
-        )
-
-    /// {obj}.{meth} {arg}
-    let callMethodArg (meth : string) (arg : SynExpr) (obj : SynExpr) : SynExpr = dotGet meth obj |> applyTo arg
-
-    /// {obj}.{meth}()
-    let callMethod (meth : string) (obj : SynExpr) : SynExpr =
-        callMethodArg meth (SynExpr.CreateConst ()) obj
-
-    let typeApp (types : SynType list) (operand : SynExpr) =
-        SynExpr.TypeApp (operand, range0, types, List.replicate (types.Length - 1) range0, Some range0, range0, range0)
-
-    /// {obj}.{meth}<types,...>()
-    let callGenericMethod (meth : SynLongIdent) (types : SynType list) (obj : SynExpr) : SynExpr =
-        SynExpr.DotGet (obj, range0, meth, range0)
-        |> typeApp types
-        |> applyTo (SynExpr.CreateConst ())
-
-    /// {obj}.{meth}<ty>()
-    let callGenericMethod' (meth : string) (ty : string) (obj : SynExpr) : SynExpr =
-        callGenericMethod (SynLongIdent.createS meth) [ SynType.createLongIdent' [ ty ] ] obj
-
-    let inline index (property : SynExpr) (obj : SynExpr) : SynExpr =
-        SynExpr.DotIndexedGet (obj, property, range0, range0)
-
-    let inline arrayIndexRange (start : SynExpr option) (endRange : SynExpr option) (arr : SynExpr) : SynExpr =
-        SynExpr.DotIndexedGet (
-            arr,
-            (SynExpr.IndexRange (start, range0, endRange, range0, range0, range0)),
-            range0,
-            range0
-        )
-
-    let inline paren (e : SynExpr) : SynExpr =
-        SynExpr.Paren (e, range0, Some range0, range0)
-
-    /// (fun {varName} -> {body})
-    let createLambda (varName : string) (body : SynExpr) : SynExpr =
-        let parsedDataPat = [ SynPat.named varName ]
-
-        SynExpr.Lambda (
-            false,
-            false,
-            SynSimplePats.Create [ SynSimplePat.CreateId (Ident.Create varName) ],
-            body,
-            Some (parsedDataPat, body),
-            range0,
-            {
-                ArrowRange = Some range0
-            }
-        )
-        |> paren
-
-    let createThunk (body : SynExpr) : SynExpr =
-        SynExpr.Lambda (
-            false,
-            false,
-            SynSimplePats.Create [],
-            body,
-            Some ([ SynPat.unit ], body),
-            range0,
-            {
-                ArrowRange = Some range0
-            }
-        )
-        |> paren
-
-    let inline createIdent (s : string) : SynExpr = SynExpr.Ident (Ident (s, range0))
-
-    let inline createIdent' (i : Ident) : SynExpr = SynExpr.Ident i
-
-    let inline createLongIdent' (ident : Ident list) : SynExpr =
-        SynExpr.LongIdent (false, SynLongIdent.create ident, None, range0)
-
-    let inline createLongIdent (ident : string list) : SynExpr =
-        createLongIdent' (ident |> List.map Ident.create)
-
-    let tupleNoParen (args : SynExpr list) : SynExpr =
-        SynExpr.Tuple (false, args, List.replicate (args.Length - 1) range0, range0)
-
-    let inline tuple (args : SynExpr list) = args |> tupleNoParen |> paren
-
-    /// {body} |> fun a -> Async.StartAsTask (a, ?cancellationToken=ct)
-    let startAsTask (ct : Ident) (body : SynExpr) =
-        let lambda =
-            [
-                createIdent "a"
-                equals
-                    (SynExpr.LongIdent (true, SynLongIdent.createS "cancellationToken", None, range0))
-                    (createIdent' ct)
-            ]
-            |> tuple
-            |> applyFunction (createLongIdent [ "Async" ; "StartAsTask" ])
-            |> createLambda "a"
-
-        pipeThroughFunction lambda body
-
-    let inline createForEach (pat : SynPat) (enumExpr : SynExpr) (body : SynExpr) : SynExpr =
-        SynExpr.ForEach (
-            DebugPointAtFor.No,
-            DebugPointAtInOrTo.No,
-            SeqExprOnly.SeqExprOnly false,
-            true,
-            pat,
-            enumExpr,
-            body,
-            range0
-        )
-
-    let inline createLet (bindings : SynBinding list) (body : SynExpr) : SynExpr =
-        SynExpr.LetOrUse (false, false, bindings, body, range0, SynExprLetOrUseTrivia.empty)
-
-    let inline createDo (body : SynExpr) : SynExpr = SynExpr.Do (body, range0)
-
-    let inline createMatch (matchOn : SynExpr) (cases : SynMatchClause list) : SynExpr =
-        SynExpr.Match (
-            DebugPointAtBinding.Yes range0,
-            matchOn,
-            cases,
-            range0,
-            {
-                MatchKeyword = range0
-                WithKeyword = range0
-            }
-        )
-
-    let typeAnnotate (ty : SynType) (expr : SynExpr) : SynExpr = SynExpr.Typed (expr, ty, range0)
-
-    let inline createNew (ty : SynType) (args : SynExpr) : SynExpr =
-        SynExpr.New (false, ty, paren args, range0)
-
-    let inline createWhile (cond : SynExpr) (body : SynExpr) : SynExpr =
-        SynExpr.While (DebugPointAtWhile.Yes range0, cond, body, range0)
-
-    let inline createNull () : SynExpr = SynExpr.Null range0
-
-    let reraise : SynExpr = createIdent "reraise" |> applyTo (SynExpr.CreateConst ())
-
-    let sequential (exprs : SynExpr list) : SynExpr =
-        exprs
-        |> List.reduce (fun a b -> SynExpr.Sequential (DebugPointAtSequential.SuppressNeither, false, a, b, range0))
-
-    let listLiteral (elts : SynExpr list) : SynExpr =
-        SynExpr.ArrayOrListComputed (false, sequential elts, range0)
-
-    let arrayLiteral (elts : SynExpr list) : SynExpr =
-        SynExpr.ArrayOrListComputed (true, sequential elts, range0)
-
-    /// {compExpr} { {lets} ; return {ret} }
-    let createCompExpr (compExpr : string) (retBody : SynExpr) (lets : CompExprBinding list) : SynExpr =
-        let retStatement = SynExpr.YieldOrReturn ((false, true), retBody, range0)
-
-        let contents : SynExpr =
-            (retStatement, List.rev lets)
-            ||> List.fold (fun state binding ->
-                match binding with
-                | LetBang (lhs, rhs) ->
-                    SynExpr.LetOrUseBang (
-                        DebugPointAtBinding.Yes range0,
-                        false,
-                        true,
-                        SynPat.named lhs,
-                        rhs,
-                        [],
-                        state,
-                        range0,
-                        {
-                            EqualsRange = Some range0
-                        }
-                    )
-                | Let (lhs, rhs) -> createLet [ SynBinding.basic [ Ident.create lhs ] [] rhs ] state
-                | Use (lhs, rhs) ->
-                    SynExpr.LetOrUse (
-                        false,
-                        true,
-                        [ SynBinding.basic [ Ident.create lhs ] [] rhs ],
-                        state,
-                        range0,
-                        {
-                            SynExprLetOrUseTrivia.InKeyword = None
-                        }
-                    )
-                | Do body -> sequential [ SynExpr.Do (body, range0) ; state ]
-            )
-
-        applyFunction (createIdent compExpr) (SynExpr.ComputationExpr (false, contents, range0))
-
-    /// {expr} |> Async.AwaitTask
-    let awaitTask (expr : SynExpr) : SynExpr =
-        expr |> pipeThroughFunction (createLongIdent [ "Async" ; "AwaitTask" ])
-
-    /// {ident}.ToString ()
-    /// with special casing for some types like DateTime
-    let toString (ty : SynType) (ident : SynExpr) =
-        match ty with
-        | DateOnly -> ident |> callMethodArg "ToString" (SynExpr.CreateConst "yyyy-MM-dd")
-        | DateTime -> ident |> callMethodArg "ToString" (SynExpr.CreateConst "yyyy-MM-ddTHH:mm:ss")
-        | _ -> callMethod "ToString" ident
-
-    let upcast' (ty : SynType) (e : SynExpr) = SynExpr.Upcast (e, ty, range0)
-
-    /// {ident} - {rhs}
-    let minus (ident : SynLongIdent) (rhs : SynExpr) : SynExpr =
-        SynExpr.CreateAppInfix (SynExpr.CreateLongIdent SynLongIdent.sub, SynExpr.CreateLongIdent ident)
-        |> applyTo rhs
-
-    /// {ident} - {n}
-    let minusN (ident : SynLongIdent) (n : int) : SynExpr = minus ident (SynExpr.CreateConst n)
-
-    /// {y} > {x}
-    let greaterThan (x : SynExpr) (y : SynExpr) : SynExpr =
-        SynExpr.CreateAppInfix (SynExpr.CreateLongIdent SynLongIdent.gt, y) |> applyTo x
-
-    /// {y} < {x}
-    let lessThan (x : SynExpr) (y : SynExpr) : SynExpr =
-        SynExpr.CreateAppInfix (SynExpr.CreateLongIdent SynLongIdent.lt, y) |> applyTo x
-
-    /// {y} >= {x}
-    let greaterThanOrEqual (x : SynExpr) (y : SynExpr) : SynExpr =
-        SynExpr.CreateAppInfix (SynExpr.CreateLongIdent SynLongIdent.geq, y)
-        |> applyTo x
-
-    /// {y} <= {x}
-    let lessThanOrEqual (x : SynExpr) (y : SynExpr) : SynExpr =
-        SynExpr.CreateAppInfix (SynExpr.CreateLongIdent SynLongIdent.leq, y)
-        |> applyTo x
-
-    /// {x} :: {y}
-    let listCons (x : SynExpr) (y : SynExpr) : SynExpr =
-        SynExpr.CreateAppInfix (
-            SynExpr.LongIdent (
-                false,
-                SynLongIdent.SynLongIdent (
-                    [ Ident.create "op_ColonColon" ],
-                    [],
-                    [ Some (IdentTrivia.OriginalNotation "::") ]
-                ),
-                None,
-                range0
-            ),
-            tupleNoParen [ x ; y ]
-        )
-        |> paren
-
-    let assign (lhs : SynLongIdent) (rhs : SynExpr) : SynExpr = SynExpr.LongIdentSet (lhs, rhs, range0)
-
-    let assignIndex (lhs : SynExpr) (index : SynExpr) (rhs : SynExpr) : SynExpr =
-        SynExpr.DotIndexedSet (lhs, index, rhs, range0, range0, range0)

WoofWare.Myriad.Plugins/SynExpr/SynExprLetOrUseTrivia.fs

@@ -1,10 +0,0 @@
-namespace WoofWare.Myriad.Plugins
-
-open Fantomas.FCS.SyntaxTrivia
-
-[<RequireQualifiedAccess>]
-module internal SynExprLetOrUseTrivia =
-    let empty : SynExprLetOrUseTrivia =
-        {
-            InKeyword = None
-        }

WoofWare.Myriad.Plugins/SynExpr/SynField.fs

@@ -1,76 +0,0 @@
-namespace WoofWare.Myriad.Plugins
-
-open Fantomas.FCS.Text.Range
-open Fantomas.FCS.Syntax
-open Fantomas.FCS.SyntaxTrivia
-open Fantomas.FCS.Xml
-
-/// The data needed to reconstitute a single piece of data within a union field, or a single record field.
-/// This is generic on whether the field is identified. For example, in `type Foo = Blah of int`, the `int`
-/// field is not identified; whereas in `type Foo = Blah of baz : int`, it is identified.
-type SynFieldData<'Ident> =
-    {
-        /// Attributes on this field. I think you can only get these if this is a *record* field.
-        Attrs : SynAttribute list
-        /// The identifier of this field (see docstring for SynFieldData).
-        Ident : 'Ident
-        /// The type of the data contained in this field. For example, `type Foo = { Blah : int }`
-        /// has this being `int`.
-        Type : SynType
-    }
-
-[<RequireQualifiedAccess>]
-module internal SynField =
-    /// Get the useful information out of a SynField.
-    let extract (SynField (attrs, _, id, fieldType, _, _, _, _, _)) : SynFieldData<Ident option> =
-        {
-            Attrs = attrs |> List.collect (fun l -> l.Attributes)
-            Ident = id
-            Type = fieldType
-        }
-
-    let mapIdent<'a, 'b> (f : 'a -> 'b) (x : SynFieldData<'a>) : SynFieldData<'b> =
-        let ident = f x.Ident
-
-        {
-            Attrs = x.Attrs
-            Ident = ident
-            Type = x.Type
-        }
-
-    /// Throws if the field has no identifier.
-    let extractWithIdent (f : SynField) : SynFieldData<Ident> =
-        f
-        |> extract
-        |> mapIdent (fun ident ->
-            match ident with
-            | None -> failwith "expected field identifier to have a value, but it did not"
-            | Some i -> i
-        )
-
-    let make (data : SynFieldData<Ident option>) : SynField =
-        let attrs : SynAttributeList list =
-            data.Attrs
-            |> List.map (fun l ->
-                {
-                    Attributes = [ l ]
-                    Range = range0
-                }
-            )
-
-        SynField.SynField (
-            attrs,
-            false,
-            data.Ident,
-            data.Type,
-            false,
-            PreXmlDoc.Empty,
-            None,
-            range0,
-            SynFieldTrivia.Zero
-        )
-
-    let withDocString (doc : PreXmlDoc) (f : SynField) : SynField =
-        match f with
-        | SynField (attributes, isStatic, idOpt, fieldType, isMutable, _, accessibility, range, trivia) ->
-            SynField (attributes, isStatic, idOpt, fieldType, isMutable, doc, accessibility, range, trivia)

WoofWare.Myriad.Plugins/SynExpr/SynIdent.fs

@@ -1,10 +0,0 @@
-namespace WoofWare.Myriad.Plugins
-
-open Fantomas.FCS.Syntax
-
-[<RequireQualifiedAccess>]
-module internal SynIdent =
-    let inline createI (i : Ident) : SynIdent = SynIdent.SynIdent (i, None)
-
-    let inline createS (i : string) : SynIdent =
-        SynIdent.SynIdent (Ident.create i, None)

WoofWare.Myriad.Plugins/SynExpr/SynLongIdent.fs

@@ -1,134 +0,0 @@
-namespace WoofWare.Myriad.Plugins
-
-open Fantomas.FCS.SyntaxTrivia
-open Fantomas.FCS.Text.Range
-open Fantomas.FCS.Syntax
-
-[<RequireQualifiedAccess>]
-module internal SynLongIdent =
-
-    let geq =
-        SynLongIdent.SynLongIdent (
-            [ Ident.create "op_GreaterThanOrEqual" ],
-            [],
-            [ Some (IdentTrivia.OriginalNotation ">=") ]
-        )
-
-    let leq =
-        SynLongIdent.SynLongIdent (
-            [ Ident.create "op_LessThanOrEqual" ],
-            [],
-            [ Some (IdentTrivia.OriginalNotation "<=") ]
-        )
-
-    let gt =
-        SynLongIdent.SynLongIdent ([ Ident.create "op_GreaterThan" ], [], [ Some (IdentTrivia.OriginalNotation ">") ])
-
-    let lt =
-        SynLongIdent.SynLongIdent ([ Ident.create "op_LessThan" ], [], [ Some (IdentTrivia.OriginalNotation "<") ])
-
-    let sub =
-        SynLongIdent.SynLongIdent ([ Ident.create "op_Subtraction" ], [], [ Some (IdentTrivia.OriginalNotation "-") ])
-
-    let eq =
-        SynLongIdent.SynLongIdent ([ Ident.create "op_Equality" ], [], [ Some (IdentTrivia.OriginalNotation "=") ])
-
-    let booleanAnd =
-        SynLongIdent.SynLongIdent ([ Ident.create "op_BooleanAnd" ], [], [ Some (IdentTrivia.OriginalNotation "&&") ])
-
-    let booleanOr =
-        SynLongIdent.SynLongIdent ([ Ident.create "op_BooleanOr" ], [], [ Some (IdentTrivia.OriginalNotation "||") ])
-
-    let pipe =
-        SynLongIdent.SynLongIdent ([ Ident.create "op_PipeRight" ], [], [ Some (IdentTrivia.OriginalNotation "|>") ])
-
-    let toString (sli : SynLongIdent) : string =
-        sli.LongIdent |> List.map _.idText |> String.concat "."
-
-    let create (ident : LongIdent) : SynLongIdent =
-        let commas =
-            match ident with
-            | [] -> []
-            | _ :: commas -> commas |> List.map (fun _ -> range0)
-
-        SynLongIdent.SynLongIdent (ident, commas, List.replicate ident.Length None)
-
-    let inline createI (i : Ident) : SynLongIdent = create [ i ]
-
-    let inline createS (s : string) : SynLongIdent = createI (Ident (s, range0))
-
-    let inline createS' (s : string list) : SynLongIdent =
-        create (s |> List.map (fun i -> Ident (i, range0)))
-
-    let isUnit (ident : SynLongIdent) : bool =
-        match ident.LongIdent with
-        | [ i ] when System.String.Equals (i.idText, "unit", System.StringComparison.OrdinalIgnoreCase) -> true
-        | _ -> false
-
-    let isList (ident : SynLongIdent) : bool =
-        match ident.LongIdent with
-        | [ i ] when System.String.Equals (i.idText, "list", System.StringComparison.OrdinalIgnoreCase) -> true
-        // TODO: consider FSharpList or whatever it is
-        | _ -> false
-
-    let isArray (ident : SynLongIdent) : bool =
-        match ident.LongIdent with
-        | [ i ] when
-            System.String.Equals (i.idText, "array", System.StringComparison.OrdinalIgnoreCase)
-            || System.String.Equals (i.idText, "[]", System.StringComparison.Ordinal)
-            ->
-            true
-        | _ -> false
-
-    let isOption (ident : SynLongIdent) : bool =
-        match ident.LongIdent with
-        | [ i ] when System.String.Equals (i.idText, "option", System.StringComparison.OrdinalIgnoreCase) -> true
-        // TODO: consider Microsoft.FSharp.Option or whatever it is
-        | _ -> false
-
-    let isChoice (ident : SynLongIdent) : bool =
-        match ident.LongIdent with
-        | [ i ] when System.String.Equals (i.idText, "Choice", System.StringComparison.Ordinal) -> true
-        // TODO: consider Microsoft.FSharp.Choice or whatever it is
-        | _ -> false
-
-    let isNullable (ident : SynLongIdent) : bool =
-        match ident.LongIdent |> List.map _.idText with
-        | [ "System" ; "Nullable" ]
-        | [ "Nullable" ] -> true
-        | _ -> false
-
-    let isResponse (ident : SynLongIdent) : bool =
-        match ident.LongIdent |> List.map _.idText with
-        | [ "Response" ]
-        | [ "RestEase" ; "Response" ] -> true
-        | _ -> false
-
-    let isMap (ident : SynLongIdent) : bool =
-        match ident.LongIdent |> List.map _.idText with
-        | [ "Map" ] -> true
-        | _ -> false
-
-    let isReadOnlyDictionary (ident : SynLongIdent) : bool =
-        match ident.LongIdent |> List.map _.idText with
-        | [ "IReadOnlyDictionary" ]
-        | [ "Generic" ; "IReadOnlyDictionary" ]
-        | [ "Collections" ; "Generic" ; "IReadOnlyDictionary" ]
-        | [ "System" ; "Collections" ; "Generic" ; "IReadOnlyDictionary" ] -> true
-        | _ -> false
-
-    let isDictionary (ident : SynLongIdent) : bool =
-        match ident.LongIdent |> List.map _.idText with
-        | [ "Dictionary" ]
-        | [ "Generic" ; "Dictionary" ]
-        | [ "Collections" ; "Generic" ; "Dictionary" ]
-        | [ "System" ; "Collections" ; "Generic" ; "Dictionary" ] -> true
-        | _ -> false
-
-    let isIDictionary (ident : SynLongIdent) : bool =
-        match ident.LongIdent |> List.map _.idText with
-        | [ "IDictionary" ]
-        | [ "Generic" ; "IDictionary" ]
-        | [ "Collections" ; "Generic" ; "IDictionary" ]
-        | [ "System" ; "Collections" ; "Generic" ; "IDictionary" ] -> true
-        | _ -> false

WoofWare.Myriad.Plugins/SynExpr/SynMatchClause.fs

@@ -1,24 +0,0 @@
-namespace WoofWare.Myriad.Plugins
-
-open Fantomas.FCS.Syntax
-open Fantomas.FCS.Text.Range
-
-[<RequireQualifiedAccess>]
-module internal SynMatchClause =
-    let create (lhs : SynPat) (rhs : SynExpr) : SynMatchClause =
-        SynMatchClause.SynMatchClause (
-            lhs,
-            None,
-            rhs,
-            range0,
-            DebugPointAtTarget.Yes,
-            {
-                ArrowRange = Some range0
-                BarRange = Some range0
-            }
-        )
-
-    let withWhere (where : SynExpr) (m : SynMatchClause) : SynMatchClause =
-        match m with
-        | SynMatchClause (synPat, _, resultExpr, range, debugPointAtTarget, synMatchClauseTrivia) ->
-            SynMatchClause (synPat, Some where, resultExpr, range, debugPointAtTarget, synMatchClauseTrivia)

WoofWare.Myriad.Plugins/SynExpr/SynMemberDefn.fs

@@ -1,71 +0,0 @@
-namespace WoofWare.Myriad.Plugins
-
-open Fantomas.FCS.Syntax
-open Fantomas.FCS.SyntaxTrivia
-open Fantomas.FCS.Text.Range
-open Fantomas.FCS.Xml
-
-[<RequireQualifiedAccess>]
-module internal SynMemberDefn =
-    let private interfaceMemberSlotFlags =
-        {
-            SynMemberFlags.IsInstance = true
-            SynMemberFlags.IsDispatchSlot = true
-            SynMemberFlags.IsOverrideOrExplicitImpl = false
-            SynMemberFlags.IsFinal = false
-            SynMemberFlags.GetterOrSetterIsCompilerGenerated = false
-            SynMemberFlags.MemberKind = SynMemberKind.Member
-        }
-
-    let abstractMember
-        (attrs : SynAttribute list)
-        (ident : SynIdent)
-        (typars : SynTyparDecls option)
-        (arity : SynValInfo)
-        (xmlDoc : PreXmlDoc)
-        (returnType : SynType)
-        : SynMemberDefn
-        =
-        let slot =
-            SynValSig.SynValSig (
-                attrs
-                |> List.map (fun attr ->
-                    {
-                        Attributes = [ attr ]
-                        Range = range0
-                    }
-                ),
-                ident,
-                SynValTyparDecls.SynValTyparDecls (typars, true),
-                returnType,
-                arity,
-                false,
-                false,
-                xmlDoc,
-                None,
-                None,
-                range0,
-                {
-                    EqualsRange = None
-                    WithKeyword = None
-                    InlineKeyword = None
-                    LeadingKeyword = SynLeadingKeyword.Abstract range0
-                }
-            )
-
-        SynMemberDefn.AbstractSlot (
-            slot,
-            interfaceMemberSlotFlags,
-            range0,
-            {
-                GetSetKeywords = None
-            }
-        )
-
-    let staticMember (binding : SynBinding) : SynMemberDefn =
-        let binding = SynBinding.makeStaticMember binding
-        SynMemberDefn.Member (binding, range0)
-
-    let memberImplementation (binding : SynBinding) : SynMemberDefn =
-        let binding = SynBinding.makeInstanceMember binding
-        SynMemberDefn.Member (binding, range0)

WoofWare.Myriad.Plugins/SynExpr/SynModuleDecl.fs

@@ -1,30 +0,0 @@
-namespace WoofWare.Myriad.Plugins
-
-open Fantomas.FCS.Syntax
-open Fantomas.FCS.SyntaxTrivia
-open Fantomas.FCS.Text.Range
-
-[<RequireQualifiedAccess>]
-module internal SynModuleDecl =
-
-    let inline openAny (ident : SynOpenDeclTarget) : SynModuleDecl = SynModuleDecl.Open (ident, range0)
-
-    let inline createLets (bindings : SynBinding list) : SynModuleDecl =
-        SynModuleDecl.Let (false, bindings, range0)
-
-    let inline createLet (binding : SynBinding) : SynModuleDecl = createLets [ binding ]
-
-    let inline createTypes (tys : SynTypeDefn list) : SynModuleDecl = SynModuleDecl.Types (tys, range0)
-
-    let nestedModule (info : SynComponentInfo) (decls : SynModuleDecl list) : SynModuleDecl =
-        SynModuleDecl.NestedModule (
-            info,
-            false,
-            decls,
-            false,
-            range0,
-            {
-                ModuleKeyword = Some range0
-                EqualsRange = Some range0
-            }
-        )

WoofWare.Myriad.Plugins/SynExpr/SynModuleOrNamespace.fs

@@ -1,24 +0,0 @@
-namespace WoofWare.Myriad.Plugins
-
-open Fantomas.FCS.Syntax
-open Fantomas.FCS.SyntaxTrivia
-open Fantomas.FCS.Xml
-open Fantomas.FCS.Text.Range
-
-[<RequireQualifiedAccess>]
-module internal SynModuleOrNamespace =
-
-    let createNamespace (name : LongIdent) (decls : SynModuleDecl list) =
-        SynModuleOrNamespace.SynModuleOrNamespace (
-            name,
-            false,
-            SynModuleOrNamespaceKind.DeclaredNamespace,
-            decls,
-            PreXmlDoc.Empty,
-            [],
-            None,
-            range0,
-            {
-                LeadingKeyword = SynModuleOrNamespaceLeadingKeyword.Namespace range0
-            }
-        )

WoofWare.Myriad.Plugins/SynExpr/SynPat.fs

@@ -1,54 +0,0 @@
-namespace WoofWare.Myriad.Plugins
-
-open Fantomas.FCS.Syntax
-open Fantomas.FCS.Text.Range
-
-[<RequireQualifiedAccess>]
-module internal SynPat =
-    let inline paren (pat : SynPat) : SynPat = SynPat.Paren (pat, range0)
-
-    let anon : SynPat = SynPat.Wild range0
-
-    let inline annotateTypeNoParen (ty : SynType) (pat : SynPat) = SynPat.Typed (pat, ty, range0)
-
-    let inline annotateType (ty : SynType) (pat : SynPat) = paren (annotateTypeNoParen ty pat)
-
-    let inline named (s : string) : SynPat =
-        SynPat.Named (SynIdent.SynIdent (Ident (s, range0), None), false, None, range0)
-
-    let inline namedI (i : Ident) : SynPat =
-        SynPat.Named (SynIdent.SynIdent (i, None), false, None, range0)
-
-    let inline identWithArgs (i : LongIdent) (args : SynArgPats) : SynPat =
-        SynPat.LongIdent (SynLongIdent.create i, None, None, args, None, range0)
-
-    let inline nameWithArgs (i : string) (args : SynPat list) : SynPat =
-        identWithArgs [ Ident.create i ] (SynArgPats.create args)
-
-    let inline tupleNoParen (elements : SynPat list) : SynPat =
-        match elements with
-        | [] -> failwith "Can't tuple no elements in a pattern"
-        | [ p ] -> p
-        | elements -> SynPat.Tuple (false, elements, List.replicate (elements.Length - 1) range0, range0)
-
-    let inline tuple (elements : SynPat list) : SynPat = tupleNoParen elements |> paren
-
-    let inline createConst (c : SynConst) = SynPat.Const (c, range0)
-
-    let unit = createConst SynConst.Unit
-
-    let createNull = SynPat.Null range0
-
-    let emptyList = SynPat.ArrayOrList (false, [], range0)
-
-    let listCons (lhs : SynPat) (rhs : SynPat) =
-        SynPat.ListCons (
-            lhs,
-            rhs,
-            range0,
-            {
-                ColonColonRange = range0
-            }
-        )
-
-    let emptyArray = SynPat.ArrayOrList (true, [], range0)

WoofWare.Myriad.Plugins/SynExpr/SynType.fs

@@ -1,539 +0,0 @@
-namespace WoofWare.Myriad.Plugins
-
-open System
-open Fantomas.FCS.Syntax
-open Fantomas.FCS.Text.Range
-
-[<AutoOpen>]
-module internal SynTypePatterns =
-    let (|OptionType|_|) (fieldType : SynType) =
-        match fieldType with
-        | SynType.App (SynType.LongIdent ident, _, [ innerType ], _, _, _, _) when SynLongIdent.isOption ident ->
-            Some innerType
-        | _ -> None
-
-    let (|ChoiceType|_|) (fieldType : SynType) =
-        match fieldType with
-        | SynType.App (SynType.LongIdent ident, _, inner, _, _, _, _) when SynLongIdent.isChoice ident -> Some inner
-        | _ -> None
-
-    let (|NullableType|_|) (fieldType : SynType) =
-        match fieldType with
-        | SynType.App (SynType.LongIdent ident, _, [ innerType ], _, _, _, _) when SynLongIdent.isNullable ident ->
-            Some innerType
-        | _ -> None
-
-    let (|UnitType|_|) (fieldType : SynType) : unit option =
-        match fieldType with
-        | SynType.LongIdent ident when SynLongIdent.isUnit ident -> Some ()
-        | _ -> None
-
-    let (|ListType|_|) (fieldType : SynType) =
-        match fieldType with
-        | SynType.App (SynType.LongIdent ident, _, [ innerType ], _, _, _, _) when SynLongIdent.isList ident ->
-            Some innerType
-        | _ -> None
-
-    let (|ArrayType|_|) (fieldType : SynType) =
-        match fieldType with
-        | SynType.App (SynType.LongIdent ident, _, [ innerType ], _, _, _, _) when SynLongIdent.isArray ident ->
-            Some innerType
-        | SynType.Array (1, innerType, _) -> Some innerType
-        | _ -> None
-
-    let (|RestEaseResponseType|_|) (fieldType : SynType) =
-        match fieldType with
-        | SynType.App (SynType.LongIdent ident, _, [ innerType ], _, _, _, _) when SynLongIdent.isResponse ident ->
-            Some innerType
-        | _ -> None
-
-    let (|DictionaryType|_|) (fieldType : SynType) =
-        match fieldType with
-        | SynType.App (SynType.LongIdent ident, _, [ key ; value ], _, _, _, _) when SynLongIdent.isDictionary ident ->
-            Some (key, value)
-        | _ -> None
-
-    let (|IDictionaryType|_|) (fieldType : SynType) =
-        match fieldType with
-        | SynType.App (SynType.LongIdent ident, _, [ key ; value ], _, _, _, _) when SynLongIdent.isIDictionary ident ->
-            Some (key, value)
-        | _ -> None
-
-    let (|IReadOnlyDictionaryType|_|) (fieldType : SynType) =
-        match fieldType with
-        | SynType.App (SynType.LongIdent ident, _, [ key ; value ], _, _, _, _) when
-            SynLongIdent.isReadOnlyDictionary ident
-            ->
-            Some (key, value)
-        | _ -> None
-
-    let (|MapType|_|) (fieldType : SynType) =
-        match fieldType with
-        | SynType.App (SynType.LongIdent ident, _, [ key ; value ], _, _, _, _) when SynLongIdent.isMap ident ->
-            Some (key, value)
-        | _ -> None
-
-    let (|BigInt|_|) (fieldType : SynType) : unit option =
-        match fieldType with
-        | SynType.LongIdent ident ->
-            match ident.LongIdent |> List.map _.idText with
-            | [ "bigint" ]
-            | [ "BigInteger" ]
-            | [ "Numerics" ; "BigInteger" ]
-            | [ "System" ; "Numerics" ; "BigInteger" ] -> Some ()
-            | _ -> None
-        | _ -> None
-
-    /// Returns the type, qualified as in e.g. `System.Boolean`.
-    let (|PrimitiveType|_|) (fieldType : SynType) : LongIdent option =
-        match fieldType with
-        | SynType.LongIdent ident ->
-            match ident.LongIdent with
-            | [ i ] -> Primitives.qualifyType i.idText
-            | _ -> None
-        | _ -> None
-
-    let (|String|_|) (fieldType : SynType) : unit option =
-        match fieldType with
-        | SynType.LongIdent ident ->
-            match ident.LongIdent with
-            | [ i ] ->
-                [ "string" ]
-                |> List.tryFind (fun s -> s = i.idText)
-                |> Option.map ignore<string>
-            | _ -> None
-        | _ -> None
-
-    let (|Byte|_|) (fieldType : SynType) : unit option =
-        match fieldType with
-        | SynType.LongIdent ident ->
-            match ident.LongIdent with
-            | [ i ] -> [ "byte" ] |> List.tryFind (fun s -> s = i.idText) |> Option.map ignore<string>
-            | _ -> None
-        | _ -> None
-
-    let (|Guid|_|) (fieldType : SynType) : unit option =
-        match fieldType with
-        | SynType.LongIdent ident ->
-            match ident.LongIdent |> List.map (fun i -> i.idText) with
-            | [ "System" ; "Guid" ]
-            | [ "Guid" ] -> Some ()
-            | _ -> None
-        | _ -> None
-
-    let (|HttpResponseMessage|_|) (fieldType : SynType) : unit option =
-        match fieldType with
-        | SynType.LongIdent ident ->
-            match ident.LongIdent |> List.map (fun i -> i.idText) with
-            | [ "System" ; "Net" ; "Http" ; "HttpResponseMessage" ]
-            | [ "Net" ; "Http" ; "HttpResponseMessage" ]
-            | [ "Http" ; "HttpResponseMessage" ]
-            | [ "HttpResponseMessage" ] -> Some ()
-            | _ -> None
-        | _ -> None
-
-    let (|HttpContent|_|) (fieldType : SynType) : unit option =
-        match fieldType with
-        | SynType.LongIdent ident ->
-            match ident.LongIdent |> List.map (fun i -> i.idText) with
-            | [ "System" ; "Net" ; "Http" ; "HttpContent" ]
-            | [ "Net" ; "Http" ; "HttpContent" ]
-            | [ "Http" ; "HttpContent" ]
-            | [ "HttpContent" ] -> Some ()
-            | _ -> None
-        | _ -> None
-
-    let (|Stream|_|) (fieldType : SynType) : unit option =
-        match fieldType with
-        | SynType.LongIdent ident ->
-            match ident.LongIdent |> List.map (fun i -> i.idText) with
-            | [ "System" ; "IO" ; "Stream" ]
-            | [ "IO" ; "Stream" ]
-            | [ "Stream" ] -> Some ()
-            | _ -> None
-        | _ -> None
-
-    let (|NumberType|_|) (fieldType : SynType) =
-        match fieldType with
-        | SynType.LongIdent ident ->
-            match ident.LongIdent with
-            | [ i ] ->
-                // We won't bother with the case that the user has done e.g. `Single` (relying on `System` being open).
-                match Primitives.qualifyType i.idText with
-                | Some qualified ->
-                    match i.idText with
-                    | "char"
-                    | "string" -> None
-                    | _ -> Some qualified
-                | None -> None
-            | _ -> None
-        | _ -> None
-
-    /// Returns the name of the measure, and the outer type.
-    let (|Measure|_|) (fieldType : SynType) : (Ident * LongIdent) option =
-        match fieldType with
-        | SynType.App (NumberType outer,
-                       _,
-                       [ SynType.LongIdent (SynLongIdent.SynLongIdent ([ ident ], _, _)) ],
-                       _,
-                       _,
-                       _,
-                       _) -> Some (ident, outer)
-        | _ -> None
-
-    let (|JsonNode|_|) (fieldType : SynType) : unit option =
-        match fieldType with
-        | SynType.LongIdent (SynLongIdent.SynLongIdent (ident, _, _)) ->
-            match ident |> List.map (fun i -> i.idText) with
-            | [ "System" ; "Text" ; "Json" ; "Nodes" ; "JsonNode" ]
-            | [ "Text" ; "Json" ; "Nodes" ; "JsonNode" ]
-            | [ "Json" ; "Nodes" ; "JsonNode" ]
-            | [ "Nodes" ; "JsonNode" ]
-            | [ "JsonNode" ] -> Some ()
-            | _ -> None
-        | _ -> None
-
-    let (|Unit|_|) (fieldType : SynType) : unit option =
-        match fieldType with
-        | SynType.LongIdent (SynLongIdent.SynLongIdent (ident, _, _)) ->
-            match ident |> List.map (fun i -> i.idText.ToLowerInvariant ()) with
-            | [ "microsoft" ; "fsharp" ; "core" ; "unit" ]
-            | [ "fsharp" ; "core" ; "unit" ]
-            | [ "core" ; "unit" ]
-            | [ "unit" ] -> Some ()
-            | _ -> None
-        | _ -> None
-
-    let (|DateOnly|_|) (fieldType : SynType) =
-        match fieldType with
-        | SynType.LongIdent (SynLongIdent.SynLongIdent (ident, _, _)) ->
-            match ident |> List.map (fun i -> i.idText) with
-            | [ "System" ; "DateOnly" ]
-            | [ "DateOnly" ] -> Some ()
-            | _ -> None
-        | _ -> None
-
-    let (|DateTime|_|) (fieldType : SynType) =
-        match fieldType with
-        | SynType.LongIdent (SynLongIdent.SynLongIdent (ident, _, _)) ->
-            match ident |> List.map (fun i -> i.idText) with
-            | [ "System" ; "DateTime" ]
-            | [ "DateTime" ] -> Some ()
-            | _ -> None
-        | _ -> None
-
-    let (|DateTimeOffset|_|) (fieldType : SynType) =
-        match fieldType with
-        | SynType.LongIdent (SynLongIdent.SynLongIdent (ident, _, _)) ->
-            match ident |> List.map (fun i -> i.idText) with
-            | [ "System" ; "DateTimeOffset" ]
-            | [ "DateTimeOffset" ] -> Some ()
-            | _ -> None
-        | _ -> None
-
-    let (|Uri|_|) (fieldType : SynType) =
-        match fieldType with
-        | SynType.LongIdent (SynLongIdent.SynLongIdent (ident, _, _)) ->
-            match ident |> List.map (fun i -> i.idText) with
-            | [ "System" ; "Uri" ]
-            | [ "Uri" ] -> Some ()
-            | _ -> None
-        | _ -> None
-
-    let (|Task|_|) (fieldType : SynType) : SynType option =
-        match fieldType with
-        | SynType.App (SynType.LongIdent (SynLongIdent.SynLongIdent (ident, _, _)), _, args, _, _, _, _) ->
-            match ident |> List.map (fun i -> i.idText) with
-            | [ "Task" ]
-            | [ "Tasks" ; "Task" ]
-            | [ "Threading" ; "Tasks" ; "Task" ]
-            | [ "System" ; "Threading" ; "Tasks" ; "Task" ] ->
-                match args with
-                | [ arg ] -> Some arg
-                | _ -> failwithf "Expected Task to be applied to exactly one arg, but got: %+A" args
-            | _ -> None
-        | _ -> None
-
-    let (|DirectoryInfo|_|) (fieldType : SynType) =
-        match fieldType with
-        | SynType.LongIdent (SynLongIdent.SynLongIdent (ident, _, _)) ->
-            match ident |> List.map (fun i -> i.idText) with
-            | [ "System" ; "IO" ; "DirectoryInfo" ]
-            | [ "IO" ; "DirectoryInfo" ]
-            | [ "DirectoryInfo" ] -> Some ()
-            | _ -> None
-        | _ -> None
-
-    let (|FileInfo|_|) (fieldType : SynType) =
-        match fieldType with
-        | SynType.LongIdent (SynLongIdent.SynLongIdent (ident, _, _)) ->
-            match ident |> List.map (fun i -> i.idText) with
-            | [ "System" ; "IO" ; "FileInfo" ]
-            | [ "IO" ; "FileInfo" ]
-            | [ "FileInfo" ] -> Some ()
-            | _ -> None
-        | _ -> None
-
-    let (|TimeSpan|_|) (fieldType : SynType) =
-        match fieldType with
-        | SynType.LongIdent (SynLongIdent.SynLongIdent (ident, _, _)) ->
-            match ident |> List.map (fun i -> i.idText) with
-            | [ "System" ; "TimeSpan" ]
-            | [ "TimeSpan" ] -> Some ()
-            | _ -> None
-        | _ -> None
-
-[<RequireQualifiedAccess>]
-module internal SynType =
-    let rec stripOptionalParen (ty : SynType) : SynType =
-        match ty with
-        | SynType.Paren (ty, _) -> stripOptionalParen ty
-        | ty -> ty
-
-    let inline paren (ty : SynType) : SynType = SynType.Paren (ty, range0)
-
-    let inline createLongIdent (ident : LongIdent) : SynType =
-        SynType.LongIdent (SynLongIdent.create ident)
-
-    let inline createLongIdent' (ident : string list) : SynType =
-        SynType.LongIdent (SynLongIdent.createS' ident)
-
-    let inline named (name : string) = createLongIdent' [ name ]
-
-    let inline app' (name : SynType) (args : SynType list) : SynType =
-        if args.IsEmpty then
-            failwith "Type cannot be applied to no arguments"
-
-        SynType.App (name, Some range0, args, List.replicate (args.Length - 1) range0, Some range0, false, range0)
-
-    let inline app (name : string) (args : SynType list) : SynType = app' (named name) args
-
-    /// Returns None if the input list was empty.
-    let inline tupleNoParen (ty : SynType list) : SynType option =
-        match List.rev ty with
-        | [] -> None
-        | [ t ] -> Some t
-        | t :: rest ->
-            ([ SynTupleTypeSegment.Type t ], rest)
-            ||> List.fold (fun ty nextArg -> SynTupleTypeSegment.Type nextArg :: SynTupleTypeSegment.Star range0 :: ty)
-            |> fun segs -> SynType.Tuple (false, segs, range0)
-            |> Some
-
-    let inline appPostfix (name : string) (arg : SynType) : SynType =
-        SynType.App (named name, None, [ arg ], [], None, true, range0)
-
-    let inline appPostfix' (name : string list) (arg : SynType) : SynType =
-        SynType.App (createLongIdent' name, None, [ arg ], [], None, true, range0)
-
-    let inline funFromDomain (domain : SynType) (range : SynType) : SynType =
-        SynType.Fun (
-            domain,
-            range,
-            range0,
-            {
-                ArrowRange = range0
-            }
-        )
-
-    let inline signatureParamOfType
-        (attrs : SynAttribute list)
-        (ty : SynType)
-        (optional : bool)
-        (name : Ident option)
-        : SynType
-        =
-        SynType.SignatureParameter (
-            attrs
-            |> List.map (fun attr ->
-                {
-                    Attributes = [ attr ]
-                    Range = range0
-                }
-            ),
-            optional,
-            name,
-            ty,
-            range0
-        )
-
-    let inline var (ty : SynTypar) : SynType = SynType.Var (ty, range0)
-
-    let unit : SynType = named "unit"
-    let obj : SynType = named "obj"
-    let bool : SynType = named "bool"
-    let int : SynType = named "int"
-    let array (elt : SynType) : SynType = SynType.Array (1, elt, range0)
-
-    let list (elt : SynType) : SynType =
-        SynType.App (named "list", None, [ elt ], [], None, true, range0)
-
-    let option (elt : SynType) : SynType =
-        SynType.App (named "option", None, [ elt ], [], None, true, range0)
-
-    let anon : SynType = SynType.Anon range0
-
-    let task (elt : SynType) : SynType =
-        SynType.App (
-            createLongIdent' [ "System" ; "Threading" ; "Tasks" ; "Task" ],
-            None,
-            [ elt ],
-            [],
-            None,
-            true,
-            range0
-        )
-
-    let string : SynType = named "string"
-
-    /// Given ['a1, 'a2] and 'ret, returns 'a1 -> 'a2 -> 'ret.
-    let toFun (inputs : SynType list) (ret : SynType) : SynType =
-        (ret, List.rev inputs) ||> List.fold (fun ty input -> funFromDomain input ty)
-
-    let primitiveToHumanReadableString (name : LongIdent) : string =
-        match name |> List.map _.idText with
-        | [ "System" ; "Single" ] -> "single"
-        | [ "System" ; "Double" ] -> "double"
-        | [ "System" ; "Byte" ] -> "byte"
-        | [ "System" ; "SByte" ] -> "signed byte"
-        | [ "System" ; "Int16" ] -> "int16"
-        | [ "System" ; "Int32" ] -> "int32"
-        | [ "System" ; "Int64" ] -> "int64"
-        | [ "System" ; "UInt16" ] -> "uint16"
-        | [ "System" ; "UInt32" ] -> "uint32"
-        | [ "System" ; "UInt64" ] -> "uint64"
-        | [ "System" ; "Char" ] -> "char"
-        | [ "System" ; "Decimal" ] -> "decimal"
-        | [ "System" ; "String" ] -> "string"
-        | [ "System" ; "Boolean" ] -> "bool"
-        | ty ->
-            ty
-            |> String.concat "."
-            |> failwithf "could not create human-readable string for primitive type %s"
-
-    let rec toHumanReadableString (ty : SynType) : string =
-        match ty with
-        | PrimitiveType t1 -> primitiveToHumanReadableString t1
-        | OptionType t1 -> toHumanReadableString t1 + " option"
-        | NullableType t1 -> toHumanReadableString t1 + " Nullable"
-        | ChoiceType ts ->
-            ts
-            |> List.map toHumanReadableString
-            |> String.concat ", "
-            |> sprintf "Choice<%s>"
-        | MapType (k, v)
-        | DictionaryType (k, v)
-        | IDictionaryType (k, v)
-        | IReadOnlyDictionaryType (k, v) -> sprintf "map<%s, %s>" (toHumanReadableString k) (toHumanReadableString v)
-        | ListType t1 -> toHumanReadableString t1 + " list"
-        | ArrayType t1 -> toHumanReadableString t1 + " array"
-        | Task t1 -> toHumanReadableString t1 + " Task"
-        | UnitType -> "unit"
-        | FileInfo -> "FileInfo"
-        | DirectoryInfo -> "DirectoryInfo"
-        | Uri -> "URI"
-        | Stream -> "Stream"
-        | Guid -> "GUID"
-        | BigInt -> "bigint"
-        | DateTimeOffset -> "DateTimeOffset"
-        | DateOnly -> "DateOnly"
-        | TimeSpan -> "TimeSpan"
-        | SynType.LongIdent (SynLongIdent.SynLongIdent (ident, _, _)) -> ident |> List.map _.idText |> String.concat "."
-        | ty -> failwithf "could not compute human-readable string for type: %O" ty
-
-    /// Guess whether the types are equal. We err on the side of saying "no, they're different".
-    let rec provablyEqual (ty1 : SynType) (ty2 : SynType) : bool =
-        if Object.ReferenceEquals (ty1, ty2) then
-            true
-        else
-
-        match ty1 with
-        | PrimitiveType t1 ->
-            match ty2 with
-            | PrimitiveType t2 -> (t1 |> List.map _.idText) = (t2 |> List.map _.idText)
-            | _ -> false
-        | OptionType t1 ->
-            match ty2 with
-            | OptionType t2 -> provablyEqual t1 t2
-            | _ -> false
-        | NullableType t1 ->
-            match ty2 with
-            | NullableType t2 -> provablyEqual t1 t2
-            | _ -> false
-        | ChoiceType t1 ->
-            match ty2 with
-            | ChoiceType t2 ->
-                t1.Length = t2.Length
-                && List.forall (fun (a, b) -> provablyEqual a b) (List.zip t1 t2)
-            | _ -> false
-        | DictionaryType (k1, v1) ->
-            match ty2 with
-            | DictionaryType (k2, v2) -> provablyEqual k1 k2 && provablyEqual v1 v2
-            | _ -> false
-        | IDictionaryType (k1, v1) ->
-            match ty2 with
-            | IDictionaryType (k2, v2) -> provablyEqual k1 k2 && provablyEqual v1 v2
-            | _ -> false
-        | IReadOnlyDictionaryType (k1, v1) ->
-            match ty2 with
-            | IReadOnlyDictionaryType (k2, v2) -> provablyEqual k1 k2 && provablyEqual v1 v2
-            | _ -> false
-        | MapType (k1, v1) ->
-            match ty2 with
-            | MapType (k2, v2) -> provablyEqual k1 k2 && provablyEqual v1 v2
-            | _ -> false
-        | ListType t1 ->
-            match ty2 with
-            | ListType t2 -> provablyEqual t1 t2
-            | _ -> false
-        | ArrayType t1 ->
-            match ty2 with
-            | ArrayType t2 -> provablyEqual t1 t2
-            | _ -> false
-        | Task t1 ->
-            match ty2 with
-            | Task t2 -> provablyEqual t1 t2
-            | _ -> false
-        | UnitType ->
-            match ty2 with
-            | UnitType -> true
-            | _ -> false
-        | FileInfo ->
-            match ty2 with
-            | FileInfo -> true
-            | _ -> false
-        | DirectoryInfo ->
-            match ty2 with
-            | DirectoryInfo -> true
-            | _ -> false
-        | Uri ->
-            match ty2 with
-            | Uri -> true
-            | _ -> false
-        | Stream ->
-            match ty2 with
-            | Stream -> true
-            | _ -> false
-        | Guid ->
-            match ty2 with
-            | Guid -> true
-            | _ -> false
-        | BigInt ->
-            match ty2 with
-            | BigInt -> true
-            | _ -> false
-        | DateTimeOffset ->
-            match ty2 with
-            | DateTimeOffset -> true
-            | _ -> false
-        | DateOnly ->
-            match ty2 with
-            | DateOnly -> true
-            | _ -> false
-        | _ ->
-
-        match ty1, ty2 with
-        | SynType.LongIdent (SynLongIdent (ident1, _, _)), SynType.LongIdent (SynLongIdent (ident2, _, _)) ->
-            let ident1 = ident1 |> List.map _.idText
-            let ident2 = ident2 |> List.map _.idText
-            ident1 = ident2
-        | _, _ -> false

WoofWare.Myriad.Plugins/SynExpr/SynTypeDefn.fs

@@ -1,27 +0,0 @@
-namespace WoofWare.Myriad.Plugins
-
-open Fantomas.FCS.Syntax
-open Fantomas.FCS.SyntaxTrivia
-open Fantomas.FCS.Text.Range
-
-[<RequireQualifiedAccess>]
-module internal SynTypeDefn =
-
-    let inline create (componentInfo : SynComponentInfo) (repr : SynTypeDefnRepr) : SynTypeDefn =
-        SynTypeDefn.SynTypeDefn (
-            componentInfo,
-            repr,
-            [],
-            None,
-            range0,
-            {
-                LeadingKeyword = SynTypeDefnLeadingKeyword.Type range0
-                EqualsRange = Some range0
-                WithKeyword = None
-            }
-        )
-
-    let inline withMemberDefns (members : SynMemberDefn list) (r : SynTypeDefn) : SynTypeDefn =
-        match r with
-        | SynTypeDefn (typeInfo, typeRepr, _, ctor, range, trivia) ->
-            SynTypeDefn.SynTypeDefn (typeInfo, typeRepr, members, ctor, range, trivia)

WoofWare.Myriad.Plugins/SynExpr/SynTypeDefnRepr.fs

@@ -1,24 +0,0 @@
-namespace WoofWare.Myriad.Plugins
-
-open Fantomas.FCS.Syntax
-open Fantomas.FCS.Text.Range
-
-[<RequireQualifiedAccess>]
-module internal SynTypeDefnRepr =
-
-    let inline interfaceType (mems : SynMemberDefns) : SynTypeDefnRepr =
-        SynTypeDefnRepr.ObjectModel (SynTypeDefnKind.Unspecified, mems, range0)
-
-    /// Indicates the body of a `type Foo with {body}` extension type declaration.
-    let inline augmentation () : SynTypeDefnRepr =
-        SynTypeDefnRepr.ObjectModel (SynTypeDefnKind.Augmentation range0, [], range0)
-
-    let inline unionWithAccess (implAccess : SynAccess option) (cases : SynUnionCase list) : SynTypeDefnRepr =
-        SynTypeDefnRepr.Simple (SynTypeDefnSimpleRepr.Union (implAccess, cases, range0), range0)
-
-    let inline union (cases : SynUnionCase list) : SynTypeDefnRepr = unionWithAccess None cases
-
-    let inline recordWithAccess (implAccess : SynAccess option) (fields : SynField list) : SynTypeDefnRepr =
-        SynTypeDefnRepr.Simple (SynTypeDefnSimpleRepr.Record (implAccess, fields, range0), range0)
-
-    let inline record (fields : SynField list) : SynTypeDefnRepr = recordWithAccess None fields

WoofWare.Myriad.Plugins/SynExpr/SynUnionCase.fs

@@ -1,55 +0,0 @@
-namespace WoofWare.Myriad.Plugins
-
-open Fantomas.FCS.Syntax
-open Fantomas.FCS.Text.Range
-open Fantomas.FCS.Xml
-open Fantomas.FCS.SyntaxTrivia
-
-/// Represents everything you need to know about a union case.
-/// This is generic on whether each field of this case must be named.
-type UnionCase<'ident> =
-    {
-        /// The name of the case: e.g. `| Foo of blah` has this being `Foo`.
-        Name : Ident
-        /// Any docstring associated with this case.
-        XmlDoc : PreXmlDoc option
-        /// Any accessibility modifier: e.g. `type Foo = private | Blah`.
-        Access : SynAccess option
-        /// Attributes on the case: for example, `| [<Attr>] Foo of blah`.
-        Attributes : SynAttribute list
-        /// The data contained within the case: for example, `[blah]` in `| Foo of blah`.
-        Fields : SynFieldData<'ident> list
-    }
-
-[<RequireQualifiedAccess>]
-module internal SynUnionCase =
-    let create (case : UnionCase<Ident>) : SynUnionCase =
-        let fields =
-            case.Fields
-            |> List.map (fun field ->
-                SynField.SynField (
-                    SynAttributes.ofAttrs field.Attrs,
-                    false,
-                    Some field.Ident,
-                    field.Type,
-                    false,
-                    PreXmlDoc.Empty,
-                    None,
-                    range0,
-                    {
-                        LeadingKeyword = None
-                    }
-                )
-            )
-
-        SynUnionCase.SynUnionCase (
-            SynAttributes.ofAttrs case.Attributes,
-            SynIdent.createI case.Name,
-            SynUnionCaseKind.Fields fields,
-            case.XmlDoc |> Option.defaultValue PreXmlDoc.Empty,
-            case.Access,
-            range0,
-            {
-                BarRange = Some range0
-            }
-        )

WoofWare.Myriad.Plugins/Teq.fs

@@ -1,18 +0,0 @@
-namespace WoofWare.Myriad.Plugins
-
-// Extracted from https://github.com/G-Research/TypeEquality
-// which is Apache-2.0 licenced. See `TeqLicence.txt`.
-// We inline this code because Myriad doesn't seem to reliably load package references in the generator.
-// I have reformatted a little, and stripped out all the code I don't use.
-
-type internal Teq<'a, 'b> = private | Teq of ('a -> 'b) * ('b -> 'a)
-
-[<RequireQualifiedAccess>]
-module internal Teq =
-
-    let refl<'a> : Teq<'a, 'a> = Teq (id, id)
-    let cast (Teq (f, _)) a = f a
-
-    [<RequireQualifiedAccess>]
-    module Cong =
-        let believeMe<'a, 'b, 'a2, 'b2> (_ : Teq<'a, 'b>) : Teq<'a2, 'b2> = unbox <| (refl : Teq<'a2, 'a2>)

WoofWare.Myriad.Plugins/WoofWare.Myriad.Plugins.fsproj

@@ -15,10 +15,14 @@
     <WarnOn>FS3559</WarnOn>
     <PackageId>WoofWare.Myriad.Plugins</PackageId>
     <PackageIcon>logo.png</PackageIcon>
+    <NoWarn>NU5118</NoWarn>
+    <CopyLocalLockFileAssemblies>true</CopyLocalLockFileAssemblies>
   </PropertyGroup>
 
   <ItemGroup>
     <PackageReference Include="Myriad.Core" Version="0.8.3" />
+    <PackageReference Include="TypeEquality" Version="0.3.0" />
+    <PackageReference Include="WoofWare.Whippet.Fantomas" Version="0.6.3" />
     <!-- the lowest version allowed by Myriad.Core -->
     <PackageReference Update="FSharp.Core" Version="6.0.1" PrivateAssets="all"/>
   </ItemGroup>
@@ -26,33 +30,11 @@
   <ItemGroup>
     <Compile Include="List.fs"/>
     <Compile Include="Text.fs" />
-    <Compile Include="Teq.fs" />
-    <Compile Include="Primitives.fs" />
-    <Compile Include="SynExpr\SynAttributes.fs" />
-    <Compile Include="SynExpr\PreXmlDoc.fs" />
-    <Compile Include="SynExpr\Ident.fs" />
-    <Compile Include="SynExpr\SynIdent.fs" />
-    <Compile Include="SynExpr\SynLongIdent.fs" />
-    <Compile Include="SynExpr\SynExprLetOrUseTrivia.fs" />
-    <Compile Include="SynExpr\SynArgPats.fs" />
-    <Compile Include="SynExpr\SynPat.fs" />
-    <Compile Include="SynExpr\SynBinding.fs" />
-    <Compile Include="SynExpr\SynType.fs" />
-    <Compile Include="SynExpr\SynMatchClause.fs" />
-    <Compile Include="SynExpr\CompExpr.fs" />
-    <Compile Include="SynExpr\SynExpr.fs" />
-    <Compile Include="SynExpr\SynField.fs" />
-    <Compile Include="SynExpr\SynUnionCase.fs" />
-    <Compile Include="SynExpr\SynTypeDefnRepr.fs" />
-    <Compile Include="SynExpr\SynTypeDefn.fs" />
-    <Compile Include="SynExpr\SynComponentInfo.fs" />
-    <Compile Include="SynExpr\SynMemberDefn.fs" />
-    <Compile Include="SynExpr\SynAttribute.fs" />
-    <Compile Include="SynExpr\SynModuleDecl.fs" />
-    <Compile Include="SynExpr\SynModuleOrNamespace.fs" />
     <Compile Include="Measure.fs" />
     <Compile Include="AstHelper.fs" />
+    <Compile Include="Parameters.fs" />
     <Compile Include="RemoveOptionsGenerator.fs"/>
+    <Compile Include="MyriadParamParser.fs" />
     <Compile Include="InterfaceMockGenerator.fs"/>
     <Compile Include="JsonSerializeGenerator.fs"/>
     <Compile Include="JsonParseGenerator.fs"/>
@@ -61,7 +43,7 @@
     <Compile Include="ArgParserGenerator.fs" />
     <Compile Include="Swagger.fs" />
     <Compile Include="SwaggerClientGenerator.fs" />
-    <None Include="TeqLicence.txt" />
+    <None Include="ApacheLicence.txt" />
     <EmbeddedResource Include="version.json"/>
     <EmbeddedResource Include="SurfaceBaseline.txt"/>
     <None Include="..\README.md">
@@ -78,7 +60,7 @@
     <ProjectReference Include="..\WoofWare.Myriad.Plugins.Attributes\WoofWare.Myriad.Plugins.Attributes.fsproj"/>
     <!-- NuGet is such a clown package manager! Get the DLLs into the Nupkg artefact, I have no idea why this is needed,
          but without this line, we don't get any dependency at all packaged into the resulting artefact. -->
-    <None Include="$(OutputPath)\WoofWare.Myriad.Plugins.Attributes.dll" Pack="true" PackagePath="lib\$(TargetFramework)"/>
+    <None Include="$(OutputPath)\*.dll" Pack="true" PackagePath="lib\$(TargetFramework)"/>
   </ItemGroup>
 
 </Project>

WoofWare.Myriad.Plugins/version.json

@@ -1,5 +1,5 @@
 {
-  "version": "3.1",
+  "version": "7.0",
   "publicReleaseRefSpec": [
     "^refs/heads/main$"
   ],
@@ -11,4 +11,4 @@
     ":/README.md",
     ":/Directory.Build.props"
   ]
-}
+}

analyzers/analyzers.fsproj

@@ -10,7 +10,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageDownload Include="G-Research.FSharp.Analyzers" Version="[0.11.0]" />
+    <PackageDownload Include="G-Research.FSharp.Analyzers" Version="[0.14.0]" />
   </ItemGroup>
 
 </Project>

flake.lock

@@ -5,11 +5,11 @@
         "systems": "systems"
       },
       "locked": {
-        "lastModified": 1710146030,
-        "narHash": "sha256-SZ5L6eA7HJ/nmkzGG7/ISclqe6oZdOZTNoesiInkXPQ=",
+        "lastModified": 1731533236,
+        "narHash": "sha256-l0KFg5HjrsfsO/JpG+r7fRrqm12kzFHyUHqHCVpMMbI=",
         "owner": "numtide",
         "repo": "flake-utils",
-        "rev": "b1d9ab70662946ef0850d488da1c9019f3a9752a",
+        "rev": "11707dc2f618dd54ca8739b309ec4fc024de578b",
         "type": "github"
       },
       "original": {
@@ -20,11 +20,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1725534445,
-        "narHash": "sha256-Yd0FK9SkWy+ZPuNqUgmVPXokxDgMJoGuNpMEtkfcf84=",
+        "lastModified": 1744868846,
+        "narHash": "sha256-5RJTdUHDmj12Qsv7XOhuospjAjATNiTMElplWnJE9Hs=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "9bb1e7571aadf31ddb4af77fc64b2d59580f9a39",
+        "rev": "ebe4301cbd8f81c4f8d3244b3632338bbeb6d49c",
         "type": "github"
       },
       "original": {

flake.nix

@@ -14,8 +14,8 @@
     flake-utils.lib.eachDefaultSystem (system: let
       pkgs = nixpkgs.legacyPackages.${system};
       pname = "WoofWare.Myriad.Plugins";
-      dotnet-sdk = pkgs.dotnet-sdk_8;
-      dotnet-runtime = pkgs.dotnetCorePackages.runtime_8_0;
+      dotnet-sdk = pkgs.dotnetCorePackages.sdk_9_0;
+      dotnet-runtime = pkgs.dotnetCorePackages.runtime_9_0;
       version = "0.1";
       dotnetTool = dllOverride: toolName: toolVersion: hash:
         pkgs.stdenvNoCC.mkDerivation rec {
@@ -26,25 +26,29 @@
             pname = name;
             version = version;
             hash = hash;
-            installPhase = ''mkdir -p $out/bin && cp -r tools/net6.0/any/* $out/bin'';
+            installPhase = ''mkdir -p $out/bin && cp -r tools/net*/any/* $out/bin'';
           };
           installPhase = let
             dll =
               if isNull dllOverride
               then name
               else dllOverride;
-          in ''
-            runHook preInstall
-            mkdir -p "$out/lib"
-            cp -r ./bin/* "$out/lib"
-            makeWrapper "${dotnet-runtime}/bin/dotnet" "$out/bin/${name}" --add-flags "$out/lib/${dll}.dll"
-            runHook postInstall
-          '';
+          in
+            # fsharp-analyzers requires the .NET SDK at runtime, so we use that instead of dotnet-runtime.
+            ''
+              runHook preInstall
+              mkdir -p "$out/lib"
+              cp -r ./bin/* "$out/lib"
+              makeWrapper "${dotnet-sdk}/bin/dotnet" "$out/bin/${name}" --set DOTNET_HOST_PATH "${dotnet-sdk}/bin/dotnet" --add-flags "$out/lib/${dll}.dll"
+              runHook postInstall
+            '';
         };
     in {
-      packages = {
-        fantomas = dotnetTool null "fantomas" (builtins.fromJSON (builtins.readFile ./.config/dotnet-tools.json)).tools.fantomas.version (builtins.head (builtins.filter (elem: elem.pname == "fantomas") ((import ./nix/deps.nix) {fetchNuGet = x: x;}))).hash;
-        fsharp-analyzers = dotnetTool "FSharp.Analyzers.Cli" "fsharp-analyzers" (builtins.fromJSON (builtins.readFile ./.config/dotnet-tools.json)).tools.fsharp-analyzers.version (builtins.head (builtins.filter (elem: elem.pname == "fsharp-analyzers") ((import ./nix/deps.nix) {fetchNuGet = x: x;}))).hash;
+      packages = let
+        deps = builtins.fromJSON (builtins.readFile ./nix/deps.json);
+      in {
+        fantomas = dotnetTool null "fantomas" (builtins.fromJSON (builtins.readFile ./.config/dotnet-tools.json)).tools.fantomas.version (builtins.head (builtins.filter (elem: elem.pname == "fantomas") deps)).hash;
+        fsharp-analyzers = dotnetTool "FSharp.Analyzers.Cli" "fsharp-analyzers" (builtins.fromJSON (builtins.readFile ./.config/dotnet-tools.json)).tools.fsharp-analyzers.version (builtins.head (builtins.filter (elem: elem.pname == "fsharp-analyzers") deps)).hash;
         default = pkgs.buildDotnetModule {
           inherit pname version dotnet-sdk dotnet-runtime;
           name = "WoofWare.Myriad.Plugins";
@@ -52,7 +56,7 @@
           projectFile = "./WoofWare.Myriad.Plugins/WoofWare.Myriad.Plugins.fsproj";
           testProjectFile = "./WoofWare.Myriad.Plugins.Test/WoofWare.Myriad.Plugins.Test.fsproj";
           disabledTests = ["WoofWare.Myriad.Plugins.Test.TestSurface.CheckVersionAgainstRemote"];
-          nugetDeps = ./nix/deps.nix; # `nix build .#default.passthru.fetch-deps && ./result` and put the result here
+          nugetDeps = ./nix/deps.json; # `nix build .#default.fetch-deps && ./result nix/deps.json`
           doCheck = true;
         };
       };

global.json

@@ -1,6 +1,6 @@
-{
-  "sdk": {
-    "version": "8.0.100",
-    "rollForward": "latestMajor"
-  }
-}
+{
+  "sdk": {
+    "version": "9.0.100",
+    "rollForward": "latestMajor"
+  }
+}

nix/deps.json

@@ -0,0 +1,387 @@
+[
+  {
+    "pname": "ApiSurface",
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+    "hash": "sha256-gPMrVbjOZxXoofczF/pn6eVkLhjVSJIyQrLO2oljrDc="
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+  }
+]

nix/deps.nix

@@ -1,329 +0,0 @@
-# This file was automatically generated by passthru.fetch-deps.
-# Please dont edit it manually, your changes might get overwritten!
-{fetchNuGet}: [
-  (fetchNuGet {
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-    version = "4.1.5";
-    hash = "sha256-Kbt18XLk1gvZfzGca885HaXZB119APay85KzI546PYM=";
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-  (fetchNuGet {
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-  (fetchNuGet {
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-    version = "6.1.1";
-    hash = "sha256-FcTLHQFvKkQY/kV08jhhy/St/+FmXpp3epp/R3zUXMA=";
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-  (fetchNuGet {
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-    version = "6.1.1";
-    hash = "sha256-NuZ8msPEHYA8T3EYREB28F1RcNgUU8V54eg2+UttYxw=";
-  })
-  (fetchNuGet {
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-    hash = "sha256-1hR2SaJTkqBzU3D955MvLNVzkQHkx0Z/QzOXZfzk2Zw=";
-  })
-  (fetchNuGet {
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-    version = "0.27.0";
-    hash = "sha256-QhLi2veTY1wZlQKJLTyVPgx/ImkaZugQNjSN5VJCNEA=";
-  })
-  (fetchNuGet {
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-    version = "4.3.4";
-    hash = "sha256-styyo+6mJy+yxE0NZG/b1hxkAjPOnJfMgd9zWzCJ5uk=";
-  })
-  (fetchNuGet {
-    pname = "FSharp.Core";
-    version = "6.0.1";
-    hash = "sha256-Ehsgt3nCJijpaVuJguC1TPVEKSkJd6PSc07D2ZQSemI=";
-  })
-  (fetchNuGet {
-    pname = "FSharp.Core";
-    version = "8.0.400";
-    hash = "sha256-wlrcAjjvI5YtnHR7kFH8uRUA4GomJYmqr41K5LYjCGs=";
-  })
-  (fetchNuGet {
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-    version = "6.0.1";
-    hash = "sha256-vka/aAgWhDCl5tu+kgO7GtSaHOOvlSaWxG+tExwGXpI=";
-  })
-  (fetchNuGet {
-    pname = "Microsoft.AspNetCore.App.Ref";
-    version = "6.0.33";
-    hash = "sha256-GcPiO+iI0JsHYlqURAmzWjOnDX2jDCUY4jYaIwr8ojs=";
-  })
-  (fetchNuGet {
-    pname = "Microsoft.AspNetCore.App.Runtime.linux-arm64";
-    version = "6.0.33";
-    hash = "sha256-g5zbB1DnCSKuCOWtF09GEqGn1uJLdlTN6kqdnSCzRjQ=";
-  })
-  (fetchNuGet {
-    pname = "Microsoft.AspNetCore.App.Runtime.linux-x64";
-    version = "6.0.33";
-    hash = "sha256-ToaiqVy5qonomAVBg5PO1GgrPKL4Cc1BZTJ0z/2LquA=";
-  })
-  (fetchNuGet {
-    pname = "Microsoft.AspNetCore.App.Runtime.osx-arm64";
-    version = "6.0.33";
-    hash = "sha256-OY/vdqAzZ99I4lEZbOOQw12TE0AIb5pXxKTvDxO2M2Q=";
-  })
-  (fetchNuGet {
-    pname = "Microsoft.AspNetCore.App.Runtime.osx-x64";
-    version = "6.0.33";
-    hash = "sha256-53MAV3RO1kXzy5IpdZDZIOhoUzFqWHn7+A3aWwdTONQ=";
-  })
-  (fetchNuGet {
-    pname = "Microsoft.CodeCoverage";
-    version = "17.11.1";
-    hash = "sha256-1dLlK3NGh88PuFYZiYpT+izA96etxhU3BSgixDgdtGA=";
-  })
-  (fetchNuGet {
-    pname = "Microsoft.NET.Test.Sdk";
-    version = "17.11.1";
-    hash = "sha256-0JUEucQ2lzaPgkrjm/NFLBTbqU1dfhvhN3Tl3moE6mI=";
-  })
-  (fetchNuGet {
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