Remove more of Myriad.Core (#276)

Co-authored-by: patrick-conscriptus[bot] <175414948+patrick-conscriptus[bot]@users.noreply.github.com>

.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@v29
       with:
         extra_nix_config: |
           access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}
@@ -50,7 +50,7 @@ jobs:
         with:
           fetch-depth: 0 # so that NerdBank.GitVersioning has access to history
       - name: Install Nix
-        uses: cachix/install-nix-action@V28
+        uses: cachix/install-nix-action@v29
         with:
           extra_nix_config: |
             access-tokens = github.com=${{ 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@v29
         with:
           extra_nix_config: |
             access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}
@@ -82,7 +82,7 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v4
       - name: Install Nix
-        uses: cachix/install-nix-action@V28
+        uses: cachix/install-nix-action@v29
         with:
           extra_nix_config: |
             access-tokens = github.com=${{ 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@v29
         with:
           extra_nix_config: |
             access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}
@@ -116,7 +116,7 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v4
       - name: Install Nix
-        uses: cachix/install-nix-action@V28
+        uses: cachix/install-nix-action@v29
         with:
           extra_nix_config: |
             access-tokens = github.com=${{ 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@v29
         with:
           extra_nix_config: |
             access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}
@@ -142,7 +142,7 @@ jobs:
     steps:
       - uses: actions/checkout@master
       - name: Install Nix
-        uses: cachix/install-nix-action@V28
+        uses: cachix/install-nix-action@v29
         with:
           extra_nix_config: |
             access-tokens = github.com=${{ 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@v29
       with:
         extra_nix_config: |
           access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}
@@ -276,7 +276,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - name: Install Nix
-        uses: cachix/install-nix-action@V28
+        uses: cachix/install-nix-action@v29
         with:
           extra_nix_config: |
             access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}
@@ -309,7 +309,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - name: Install Nix
-        uses: cachix/install-nix-action@V28
+        uses: cachix/install-nix-action@v29
         with:
           extra_nix_config: |
             access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}

.github/workflows/flake_update.yaml

@@ -27,8 +27,7 @@ jobs:
       - name: Run passthru
         run: |
             set -o pipefail
-            ./result | tee /tmp/passthru.txt
+            ./result nix/deps.nix
-            cp /"$(cat /tmp/passthru.txt | grep " wrote lockfile to " | cut -d / -f 2-)" nix/deps.nix
 
       - name: Format
         run: 'nix develop --command alejandra .'

ConsumePlugin/ConsumePlugin.fsproj

@@ -32,6 +32,20 @@
     <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/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/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/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/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

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.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

@@ -26,6 +26,7 @@
     <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" />

WoofWare.Myriad.Plugins/ArgParserGenerator.fs

@@ -4,8 +4,6 @@ open System
 open System.Text
 open Fantomas.FCS.Syntax
 open Fantomas.FCS.Text.Range
-open Fantomas.FCS.Xml
-open Myriad.Core
 
 type internal ArgParserOutputSpec =
     {
@@ -1224,7 +1222,7 @@ 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 (
@@ -1643,7 +1641,7 @@ 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 +1664,7 @@ module internal ArgParserGenerator =
                             [
                                 {
                                     Attrs = []
-                                    Ident = Ident.create "key"
+                                    Ident = Some (Ident.create "key")
                                     Type = SynType.string
                                 }
                             ]
@@ -1740,12 +1738,21 @@ 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 =
+open Myriad.Core
+
+/// Myriad generator that provides a catamorphism for an algebraic data type.
+[<MyriadGenerator("arg-parser")>]
+type ArgParserGenerator () =
+
+    interface IMyriadGenerator with
+        member _.ValidInputExtensions = [ ".fs" ]
+
+        member _.Generate (context : GeneratorContext) =
             let ast, _ =
                 Ast.fromFilename context.InputFilename |> Async.RunSynchronously |> Array.head
 
@@ -1762,7 +1769,7 @@ module internal ArgParserGenerator =
                     let typeWithAttr =
                         types
                         |> List.choose (fun ty ->
-                        match Ast.getAttribute<ArgParserAttribute> ty with
+                            match SynTypeDefn.getAttribute typeof<ArgParserAttribute>.Name ty with
                             | None -> None
                             | Some attr ->
                                 let arg =
@@ -1806,15 +1813,8 @@ module internal ArgParserGenerator =
 
             let modules =
                 namespaceAndTypes
-            |> List.map (fun (ns, taggedType, unions, records) -> createModule opens ns taggedType unions records)
+                |> List.map (fun (ns, taggedType, unions, records) ->
+                    ArgParserGenerator.createModule opens ns taggedType unions records
+                )
 
             Output.Ast modules
-
-/// Myriad generator that provides a catamorphism for an algebraic data type.
-[<MyriadGenerator("arg-parser")>]
-type ArgParserGenerator () =
-
-    interface IMyriadGenerator with
-        member _.ValidInputExtensions = [ ".fs" ]
-
-        member _.Generate (context : GeneratorContext) = ArgParserGenerator.generate context

WoofWare.Myriad.Plugins/CataGenerator.fs

@@ -3,7 +3,6 @@ namespace WoofWare.Myriad.Plugins
 open Fantomas.FCS.Syntax
 open Fantomas.FCS.SyntaxTrivia
 open Fantomas.FCS.Xml
-open Myriad.Core
 
 [<RequireQualifiedAccess>]
 module internal CataGenerator =
@@ -176,7 +175,7 @@ module internal CataGenerator =
             |> SynExpr.createLet
                 [
                     SynBinding.Let (
-                        valData = SynValData.SynValData (None, SynValInfo.Empty, None),
+                        valData = SynValData.SynValData (None, SynValInfo.empty, None),
                         pattern =
                             SynPat.tupleNoParen (
                                 allArtificialTyparNames
@@ -463,18 +462,39 @@ 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 +559,8 @@ module internal CataGenerator =
             |> List.map (fun case ->
                 let arity =
                     SynValInfo.SynValInfo (
-                        case.Fields |> List.map (fun field -> [ SynArgInfo.Empty ]),
+                        case.Fields |> List.map (fun field -> [ SynArgInfo.empty ]),
-                        SynArgInfo.Empty
+                        SynArgInfo.empty
                     )
 
                 (SynType.var generics.[analysis.GenericName.idText], List.rev case.FlattenedFields)
@@ -852,9 +872,7 @@ module internal CataGenerator =
                     else
                         []
 
-                SynMatchClause.create
+                SynMatchClause.create (SynPat.identWithArgs unionCase.Match (SynArgPats.create matchLhs)) matchBody
-                    (SynPat.CreateLongIdent (SynLongIdent.create unionCase.Match, matchLhs))
-                    matchBody
             )
 
         SynExpr.createMatch (SynExpr.createIdent "x") matchCases
@@ -1059,7 +1077,7 @@ 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 +1121,7 @@ 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 +1168,7 @@ module internal CataGenerator =
 
         [
             for openStatement in opens do
-                yield SynModuleDecl.CreateOpen openStatement
+                yield SynModuleDecl.openAny openStatement
             yield! cataStructures
             yield cataRecord
             yield
@@ -1162,7 +1180,16 @@ module internal CataGenerator =
         ]
         |> SynModuleOrNamespace.createNamespace ns
 
-    let generate (context : GeneratorContext) : Output =
+open Myriad.Core
+
+/// Myriad generator that provides a catamorphism for an algebraic data type.
+[<MyriadGenerator("create-catamorphism")>]
+type CreateCatamorphismGenerator () =
+
+    interface IMyriadGenerator with
+        member _.ValidInputExtensions = [ ".fs" ]
+
+        member _.Generate (context : GeneratorContext) =
             let ast, _ =
                 Ast.fromFilename context.InputFilename |> Async.RunSynchronously |> Array.head
 
@@ -1176,7 +1203,7 @@ module internal CataGenerator =
                     let typeWithAttr =
                         types
                         |> List.tryPick (fun ty ->
-                        match Ast.getAttribute<CreateCatamorphismAttribute> ty with
+                            match SynTypeDefn.getAttribute typeof<CreateCatamorphismAttribute>.Name ty with
                             | None -> None
                             | Some attr -> Some (attr.ArgExpr, ty)
                         )
@@ -1206,15 +1233,8 @@ module internal CataGenerator =
 
             let modules =
                 namespaceAndTypes
-            |> List.map (fun (ns, taggedType, unions, records) -> createModule opens ns taggedType unions records)
+                |> List.map (fun (ns, taggedType, unions, records) ->
+                    CataGenerator.createModule opens ns taggedType unions records
+                )
 
             Output.Ast modules
-
-/// Myriad generator that provides a catamorphism for an algebraic data type.
-[<MyriadGenerator("create-catamorphism")>]
-type CreateCatamorphismGenerator () =
-
-    interface IMyriadGenerator with
-        member _.ValidInputExtensions = [ ".fs" ]
-
-        member _.Generate (context : GeneratorContext) = CataGenerator.generate context

WoofWare.Myriad.Plugins/HttpClientGenerator.fs

@@ -992,6 +992,10 @@ 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
 
@@ -1004,13 +1008,33 @@ type HttpClientGenerator () =
                 |> List.choose (fun (ns, types) ->
                     types
                     |> List.choose (fun typeDef ->
-                        match Ast.getAttribute<HttpClientAttribute> typeDef with
+                        match SynTypeDefn.getAttribute typeof<HttpClientAttribute>.Name typeDef with
-                        | None -> None
+                        | 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

@@ -283,6 +283,10 @@ 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
 
@@ -294,7 +298,27 @@ type InterfaceMockGenerator () =
                     types
                     |> List.choose (fun typeDef ->
                         match Ast.getAttribute<GenerateMockAttribute> typeDef with
-                        | None -> None
+                        | 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

@@ -702,6 +702,10 @@ 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
 
@@ -723,8 +727,29 @@ type JsonParseGenerator () =
                 |> List.choose (fun (ns, types) ->
                     types
                     |> List.choose (fun typeDef ->
-                        match Ast.getAttribute<JsonParseAttribute> typeDef with
+                        match SynTypeDefn.getAttribute typeof<JsonParseAttribute>.Name typeDef with
-                        | None -> None
+                        | 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

@@ -519,6 +519,10 @@ 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
 
@@ -540,8 +544,29 @@ type JsonSerializeGenerator () =
                 |> List.choose (fun (ns, types) ->
                     types
                     |> List.choose (fun typeDef ->
-                        match Ast.getAttribute<JsonSerializeAttribute> typeDef with
+                        match SynTypeDefn.getAttribute typeof<JsonSerializeAttribute>.Name typeDef with
-                        | None -> None
+                        | 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/MyriadParamParser.fs

@@ -0,0 +1,64 @@
+namespace WoofWare.Myriad.Plugins
+
+open System.Collections.Generic
+
+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}"
+
+[<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/RemoveOptionsGenerator.fs

@@ -150,7 +150,10 @@ type RemoveOptionsGenerator () =
             let namespaceAndRecords =
                 records
                 |> List.choose (fun (ns, types) ->
-                    match types |> List.filter Ast.hasAttribute<RemoveOptionsAttribute> with
+                    match
+                        types
+                        |> List.filter (SynTypeDefn.hasAttribute typeof<RemoveOptionsAttribute>.Name)
+                    with
                     | [] -> None
                     | types ->
                         let types =

WoofWare.Myriad.Plugins/SwaggerClientGenerator.fs

@@ -672,31 +672,16 @@ type SwaggerClientGenerator () =
                 |> Seq.toList
 
             let config =
-                // Bug in Myriad, their arg parsing is borked.
+                let pars = MyriadParamParser.render context.AdditionalParameters
-                let pars =
-                    context.AdditionalParameters
-                    |> Seq.map (fun (KeyValue (k, v)) -> k, v)
-                    |> Seq.toList
 
                 let pars =
-                    match pars with
+                    pars
-                    | [] ->
+                    |> Map.toSeq
+                    |> Seq.map (fun (k, v) -> k.ToUpperInvariant (), v)
+                    |> Map.ofSeq
+
+                if pars.IsEmpty then
                     failwith "No parameters given. You must supply the <ClassName /> parameter in <MyriadParams />."
-                    | [ key, value ] ->
-                        let semicolon = value.IndexOf ';'
-
-                        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
 
                 let createMock =
                     match Map.tryFind "GENERATEMOCKVISIBILITY" pars with

WoofWare.Myriad.Plugins/SynExpr/SynArgInfo.fs

@@ -0,0 +1,7 @@
+namespace WoofWare.Myriad.Plugins
+
+open Fantomas.FCS.Syntax
+
+[<RequireQualifiedAccess>]
+module internal SynArgInfo =
+    let empty = SynArgInfo.SynArgInfo ([], false, None)

WoofWare.Myriad.Plugins/SynExpr/SynConst.fs

@@ -0,0 +1,10 @@
+namespace WoofWare.Myriad.Plugins
+
+open Fantomas.FCS.Syntax
+open Fantomas.FCS.Text.Range
+
+[<AutoOpen>]
+module internal SynConstExt =
+    type SynConst with
+        static member Create (s : string) : SynConst =
+            SynConst.String (s, SynStringKind.Regular, range0)

WoofWare.Myriad.Plugins/SynExpr/SynExpr.fs

@@ -2,14 +2,13 @@ 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)
+            SynExpr.Const (SynConst.Create s, range0)
 
         static member CreateConst () : SynExpr = SynExpr.Const (SynConst.Unit, range0)
 
@@ -17,7 +16,13 @@ module internal SynExprExtensions =
 
         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))
+            SynExpr.App (
+                ExprAtomicFlag.NonAtomic,
+                false,
+                SynExpr.Ident (Ident.create "char"),
+                SynExpr.CreateConst (int c),
+                range0
+            )
             |> fun e -> SynExpr.Paren (e, range0, Some range0, range0)
 
         static member CreateConst (i : int32) : SynExpr =
@@ -27,15 +32,27 @@ module internal SynExprExtensions =
 module internal SynExpr =
 
     /// {f} {x}
-    let applyFunction (f : SynExpr) (x : SynExpr) : SynExpr = SynExpr.CreateApp (f, x)
+    let applyFunction (f : SynExpr) (x : SynExpr) : SynExpr =
+        SynExpr.App (ExprAtomicFlag.NonAtomic, false, f, x, range0)
 
     /// {f} {x}
     let inline applyTo (x : SynExpr) (f : SynExpr) : SynExpr = applyFunction f x
 
+    let inline private createAppInfix (f : SynExpr) (x : SynExpr) =
+        SynExpr.App (ExprAtomicFlag.NonAtomic, true, f, x, range0)
+
+    let inline createLongIdent'' (ident : SynLongIdent) : SynExpr =
+        SynExpr.LongIdent (false, ident, None, range0)
+
+    let inline createLongIdent' (ident : Ident list) : SynExpr =
+        createLongIdent'' (SynLongIdent.create ident)
+
+    let inline createLongIdent (ident : string list) : SynExpr =
+        createLongIdent' (ident |> List.map Ident.create)
+
     /// {expr} |> {func}
     let pipeThroughFunction (func : SynExpr) (expr : SynExpr) : SynExpr =
-        SynExpr.CreateAppInfix (SynExpr.CreateLongIdent SynLongIdent.pipe, expr)
+        createAppInfix (createLongIdent'' SynLongIdent.pipe) expr |> applyTo func
-        |> applyTo func
 
     /// if {cond} then {trueBranch} else {falseBranch}
     /// Note that this function puts the trueBranch last, for pipelining convenience:
@@ -78,45 +95,23 @@ module internal SynExpr =
 
     /// {a} = {b}
     let equals (a : SynExpr) (b : SynExpr) =
-        SynExpr.CreateAppInfix (SynExpr.CreateLongIdent SynLongIdent.eq, a) |> applyTo b
+        createAppInfix (createLongIdent'' SynLongIdent.eq) a |> applyTo b
 
     /// {a} && {b}
     let booleanAnd (a : SynExpr) (b : SynExpr) =
-        SynExpr.CreateAppInfix (SynExpr.CreateLongIdent SynLongIdent.booleanAnd, a)
+        createAppInfix (createLongIdent'' SynLongIdent.booleanAnd) a |> applyTo b
-        |> applyTo b
 
     /// {a} || {b}
     let booleanOr (a : SynExpr) (b : SynExpr) =
-        SynExpr.CreateAppInfix (SynExpr.CreateLongIdent SynLongIdent.booleanOr, a)
+        createAppInfix (createLongIdent'' SynLongIdent.booleanOr) a |> applyTo b
-        |> applyTo b
 
     /// {a} + {b}
     let plus (a : SynExpr) (b : SynExpr) =
-        SynExpr.CreateAppInfix (
+        createAppInfix (createLongIdent'' SynLongIdent.plus) a |> applyTo b
-            SynExpr.CreateLongIdent (
-                SynLongIdent.SynLongIdent (
-                    Ident.CreateLong "op_Addition",
-                    [],
-                    [ Some (IdentTrivia.OriginalNotation "+") ]
-                )
-            ),
-            a
-        )
-        |> applyTo b
 
     /// {a} * {b}
     let times (a : SynExpr) (b : SynExpr) =
-        SynExpr.CreateAppInfix (
+        createAppInfix (createLongIdent'' SynLongIdent.times) a |> applyTo b
-            SynExpr.CreateLongIdent (
-                SynLongIdent.SynLongIdent (
-                    Ident.CreateLong "op_Multiply",
-                    [],
-                    [ Some (IdentTrivia.OriginalNotation "*") ]
-                )
-            ),
-            a
-        )
-        |> applyTo b
 
     let rec stripOptionalParen (expr : SynExpr) : SynExpr =
         match expr with
@@ -172,7 +167,7 @@ module internal SynExpr =
         SynExpr.Lambda (
             false,
             false,
-            SynSimplePats.Create [ SynSimplePat.CreateId (Ident.Create varName) ],
+            SynSimplePats.create [ SynSimplePat.createId (Ident.create varName) ],
             body,
             Some (parsedDataPat, body),
             range0,
@@ -186,7 +181,7 @@ module internal SynExpr =
         SynExpr.Lambda (
             false,
             false,
-            SynSimplePats.Create [],
+            SynSimplePats.create [],
             body,
             Some ([ SynPat.unit ], body),
             range0,
@@ -200,12 +195,6 @@ module internal SynExpr =
 
     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)
 
@@ -332,7 +321,7 @@ module internal SynExpr =
 
     /// {ident} - {rhs}
     let minus (ident : SynLongIdent) (rhs : SynExpr) : SynExpr =
-        SynExpr.CreateAppInfix (SynExpr.CreateLongIdent SynLongIdent.sub, SynExpr.CreateLongIdent ident)
+        createAppInfix (createLongIdent'' SynLongIdent.sub) (createLongIdent'' ident)
         |> applyTo rhs
 
     /// {ident} - {n}
@@ -340,26 +329,24 @@ module internal SynExpr =
 
     /// {y} > {x}
     let greaterThan (x : SynExpr) (y : SynExpr) : SynExpr =
-        SynExpr.CreateAppInfix (SynExpr.CreateLongIdent SynLongIdent.gt, y) |> applyTo x
+        createAppInfix (createLongIdent'' SynLongIdent.gt) y |> applyTo x
 
     /// {y} < {x}
     let lessThan (x : SynExpr) (y : SynExpr) : SynExpr =
-        SynExpr.CreateAppInfix (SynExpr.CreateLongIdent SynLongIdent.lt, y) |> applyTo x
+        createAppInfix (createLongIdent'' SynLongIdent.lt) y |> applyTo x
 
     /// {y} >= {x}
     let greaterThanOrEqual (x : SynExpr) (y : SynExpr) : SynExpr =
-        SynExpr.CreateAppInfix (SynExpr.CreateLongIdent SynLongIdent.geq, y)
+        createAppInfix (createLongIdent'' SynLongIdent.geq) y |> applyTo x
-        |> applyTo x
 
     /// {y} <= {x}
     let lessThanOrEqual (x : SynExpr) (y : SynExpr) : SynExpr =
-        SynExpr.CreateAppInfix (SynExpr.CreateLongIdent SynLongIdent.leq, y)
+        createAppInfix (createLongIdent'' SynLongIdent.leq) y |> applyTo x
-        |> applyTo x
 
     /// {x} :: {y}
     let listCons (x : SynExpr) (y : SynExpr) : SynExpr =
-        SynExpr.CreateAppInfix (
+        createAppInfix
-            SynExpr.LongIdent (
+            (SynExpr.LongIdent (
                 false,
                 SynLongIdent.SynLongIdent (
                     [ Ident.create "op_ColonColon" ],
@@ -368,9 +355,8 @@ module internal SynExpr =
                 ),
                 None,
                 range0
-            ),
+            ))
-            tupleNoParen [ x ; y ]
+            (tupleNoParen [ x ; y ])
-        )
         |> paren
 
     let assign (lhs : SynLongIdent) (rhs : SynExpr) : SynExpr = SynExpr.LongIdentSet (lhs, rhs, range0)

WoofWare.Myriad.Plugins/SynExpr/SynLongIdent.fs

@@ -39,6 +39,12 @@ module internal SynLongIdent =
     let booleanOr =
         SynLongIdent.SynLongIdent ([ Ident.create "op_BooleanOr" ], [], [ Some (IdentTrivia.OriginalNotation "||") ])
 
+    let plus =
+        SynLongIdent.SynLongIdent ([ Ident.create "op_Addition" ], [], [ Some (IdentTrivia.OriginalNotation "+") ])
+
+    let times =
+        SynLongIdent.SynLongIdent ([ Ident.create "op_Multiply" ], [], [ Some (IdentTrivia.OriginalNotation "*") ])
+
     let pipe =
         SynLongIdent.SynLongIdent ([ Ident.create "op_PipeRight" ], [], [ Some (IdentTrivia.OriginalNotation "|>") ])
 

WoofWare.Myriad.Plugins/SynExpr/SynSimplePat.fs

@@ -0,0 +1,10 @@
+namespace WoofWare.Myriad.Plugins
+
+open Fantomas.FCS.Syntax
+open Fantomas.FCS.Text.Range
+
+[<RequireQualifiedAccess>]
+module internal SynSimplePat =
+
+    let createId (id : Ident) : SynSimplePat =
+        SynSimplePat.Id (id, None, false, false, false, range0)

WoofWare.Myriad.Plugins/SynExpr/SynSimplePats.fs

@@ -0,0 +1,12 @@
+namespace WoofWare.Myriad.Plugins
+
+open Fantomas.FCS.Syntax
+open Fantomas.FCS.Text.Range
+
+[<RequireQualifiedAccess>]
+module internal SynSimplePats =
+
+    let create (pats : SynSimplePat list) : SynSimplePats =
+        match pats with
+        | [] -> SynSimplePats.SimplePats ([], [], range0)
+        | pats -> SynSimplePats.SimplePats (pats, List.replicate (pats.Length - 1) range0, range0)

WoofWare.Myriad.Plugins/SynExpr/SynTypeDefn.fs

@@ -25,3 +25,22 @@ module internal SynTypeDefn =
         match r with
         | SynTypeDefn (typeInfo, typeRepr, _, ctor, range, trivia) ->
             SynTypeDefn.SynTypeDefn (typeInfo, typeRepr, members, ctor, range, trivia)
+
+    let getName (defn : SynTypeDefn) : LongIdent =
+        match defn with
+        | SynTypeDefn (SynComponentInfo.SynComponentInfo (_, _, _, id, _, _, _, _), _, _, _, _, _) -> id
+
+    let getAttribute (attrName : string) (defn : SynTypeDefn) : SynAttribute option =
+        match defn with
+        | SynTypeDefn (SynComponentInfo.SynComponentInfo (attrs, _, _, _, _, _, _, _), _, _, _, _, _) ->
+            attrs
+            |> List.collect (fun a -> a.Attributes)
+            |> List.tryFind (fun i ->
+                match i.TypeName with
+                | SynLongIdent.SynLongIdent (id, _, _) ->
+                    let name = List.last(id).idText
+                    name = attrName || name + "Attribute" = attrName
+            )
+
+    let hasAttribute (attrName : string) (defn : SynTypeDefn) : bool =
+        getAttribute attrName defn |> Option.isSome

WoofWare.Myriad.Plugins/SynExpr/SynUnionCase.fs

@@ -23,14 +23,14 @@ type UnionCase<'ident> =
 
 [<RequireQualifiedAccess>]
 module internal SynUnionCase =
-    let create (case : UnionCase<Ident>) : SynUnionCase =
+    let create (case : UnionCase<Ident option>) : SynUnionCase =
         let fields =
             case.Fields
             |> List.map (fun field ->
                 SynField.SynField (
                     SynAttributes.ofAttrs field.Attrs,
                     false,
-                    Some field.Ident,
+                    field.Ident,
                     field.Type,
                     false,
                     PreXmlDoc.Empty,

WoofWare.Myriad.Plugins/SynExpr/SynValInfo.fs

@@ -0,0 +1,7 @@
+namespace WoofWare.Myriad.Plugins
+
+open Fantomas.FCS.Syntax
+
+[<RequireQualifiedAccess>]
+module internal SynValInfo =
+    let empty = SynValInfo.SynValInfo ([], SynArgInfo.empty)

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

@@ -29,8 +29,13 @@
     <Compile Include="Teq.fs" />
     <Compile Include="Primitives.fs" />
     <Compile Include="SynExpr\SynAttributes.fs" />
+    <Compile Include="SynExpr\SynConst.fs" />
+    <Compile Include="SynExpr\SynArgInfo.fs" />
+    <Compile Include="SynExpr\SynValInfo.fs" />
     <Compile Include="SynExpr\PreXmlDoc.fs" />
     <Compile Include="SynExpr\Ident.fs" />
+    <Compile Include="SynExpr\SynSimplePat.fs" />
+    <Compile Include="SynExpr\SynSimplePats.fs" />
     <Compile Include="SynExpr\SynIdent.fs" />
     <Compile Include="SynExpr\SynLongIdent.fs" />
     <Compile Include="SynExpr\SynExprLetOrUseTrivia.fs" />
@@ -53,6 +58,7 @@
     <Compile Include="Measure.fs" />
     <Compile Include="AstHelper.fs" />
     <Compile Include="RemoveOptionsGenerator.fs"/>
+    <Compile Include="MyriadParamParser.fs" />
     <Compile Include="InterfaceMockGenerator.fs"/>
     <Compile Include="JsonSerializeGenerator.fs"/>
     <Compile Include="JsonParseGenerator.fs"/>

flake.lock

@@ -5,11 +5,11 @@
         "systems": "systems"
       },
       "locked": {
-        "lastModified": 1710146030,
+        "lastModified": 1726560853,
-        "narHash": "sha256-SZ5L6eA7HJ/nmkzGG7/ISclqe6oZdOZTNoesiInkXPQ=",
+        "narHash": "sha256-X6rJYSESBVr3hBoH0WbKE5KvhPU5bloyZ2L4K60/fPQ=",
         "owner": "numtide",
         "repo": "flake-utils",
-        "rev": "b1d9ab70662946ef0850d488da1c9019f3a9752a",
+        "rev": "c1dfcf08411b08f6b8615f7d8971a2bfa81d5e8a",
         "type": "github"
       },
       "original": {
@@ -20,11 +20,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1725534445,
+        "lastModified": 1727524699,
-        "narHash": "sha256-Yd0FK9SkWy+ZPuNqUgmVPXokxDgMJoGuNpMEtkfcf84=",
+        "narHash": "sha256-k6YxGj08voz9NvuKExojiGXAVd69M8COtqWSKr6sQS4=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "9bb1e7571aadf31ddb4af77fc64b2d59580f9a39",
+        "rev": "b5b2fecd0cadd82ef107c9583018f381ae70f222",
         "type": "github"
       },
       "original": {

flake.nix

@@ -52,7 +52,7 @@
           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.nix; # `nix build .#default.passthru.fetch-deps && ./result nix/deps.nix`
           doCheck = true;
         };
       };