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Fix our parsing strategy so it is the same as (or very similar to) TeX's

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Summary:
Rewrote the parser to make this work, and added a bunch of tests to make sure
this does work. In the process, refactored all of our functions into a separate
file, functions.js. Added a bunch of comments to Parser.js. Also, update jasmine
so we can make our tests better, and add a lint_blacklist.txt to not lint bad
jasmine stuff.

Fixes #10
Fixes #12

Test Plan:
- Make sure all of the tests still work, and all of the new ones work also
- Make sure huxley screenshots didn't change

Reviewers: alpert

Reviewed By: alpert

Differential Revision: http://phabricator.khanacademy.org/D12989
This commit is contained in:
Emily Eisenberg
2014-09-09 23:18:37 -07:00
parent 5b4fa72299
commit 0c9e9738c3
15 changed files with 4330 additions and 4026 deletions
Download Patch File Download Diff File Expand all files Collapse all files

36
buildTree.js
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@@ -55,7 +55,7 @@ var getTypeOfGroup = function(group) {
} else if (group.type === "sizing") {
return getTypeOfGroup(group.value.value);
} else if (group.type === "delimsizing") {
return groupToType[group.value.type];
return groupToType[group.value.delimType];
} else {
return groupToType[group.type];
}
@@ -125,8 +125,7 @@ var groupTypes = {
text: function(group, options, prev) {
return makeSpan(["text mord", options.style.cls()],
[buildGroup(group.value, options.reset())]
);
buildExpression(group.value.body, options.reset()));
},
supsub: function(group, options, prev) {
@@ -368,7 +367,7 @@ var groupTypes = {
llap: function(group, options, prev) {
var inner = makeSpan(
["inner"], [buildGroup(group.value, options.reset())]);
["inner"], [buildGroup(group.value.body, options.reset())]);
var fix = makeSpan(["fix"], []);
return makeSpan(
["llap", options.style.cls()], [inner, fix]);
@@ -376,7 +375,7 @@ var groupTypes = {
rlap: function(group, options, prev) {
var inner = makeSpan(
["inner"], [buildGroup(group.value, options.reset())]);
["inner"], [buildGroup(group.value.body, options.reset())]);
var fix = makeSpan(["fix"], []);
return makeSpan(
["rlap", options.style.cls()], [inner, fix]);
@@ -399,8 +398,8 @@ var groupTypes = {
namedfn: function(group, options, prev) {
var chars = [];
for (var i = 1; i < group.value.length; i++) {
chars.push(buildCommon.mathrm(group.value[i], group.mode));
for (var i = 1; i < group.value.body.length; i++) {
chars.push(buildCommon.mathrm(group.value.body[i], group.mode));
}
return makeSpan(["mop"], chars, options.getColor());
@@ -431,7 +430,7 @@ var groupTypes = {
},
sqrt: function(group, options, prev) {
var innerGroup = buildGroup(group.value.result,
var innerGroup = buildGroup(group.value.body,
options.withStyle(options.style.cramp()));
var fontSizer = buildCommon.makeFontSizer(
@@ -493,7 +492,7 @@ var groupTypes = {
},
overline: function(group, options, prev) {
var innerGroup = buildGroup(group.value.result,
var innerGroup = buildGroup(group.value.body,
options.withStyle(options.style.cramp()));
var fontSizer = buildCommon.makeFontSizer(options, innerGroup.maxFontSize);
@@ -518,12 +517,13 @@ var groupTypes = {
},
sizing: function(group, options, prev) {
var inner = buildGroup(group.value.value,
var inner = buildExpression(group.value.value,
options.withSize(group.value.size), prev);
var span = makeSpan([getTypeOfGroup(group.value.value)],
[makeSpan(["sizing", "reset-" + options.size, group.value.size],
[inner])]);
var span = makeSpan(["mord"],
[makeSpan(["sizing", "reset-" + options.size, group.value.size,
options.style.cls()],
inner)]);
var sizeToFontSize = {
"size1": 0.5,
@@ -548,11 +548,13 @@ var groupTypes = {
var delim = group.value.value;
if (delim === ".") {
return buildCommon.makeSpan([groupToType[group.value.type]]);
return makeSpan([groupToType[group.value.delimType]]);
}
return delimiter.sizedDelim(
delim, group.value.size, options, group.mode);
return makeSpan(
[groupToType[group.value.delimType]],
[delimiter.sizedDelim(
delim, group.value.size, options, group.mode)]);
},
leftright: function(group, options, prev) {
@@ -594,7 +596,7 @@ var groupTypes = {
rule: function(group, options, prev) {
// Make an empty span for the rule
var rule = makeSpan(["mord", "rule"], []);
var rule = makeSpan(["mord", "rule"], [], options.getColor());
var width = group.value.width.number;
if (group.value.width.unit === "ex") {