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Diffstat (limited to 'webapp/non_npm_dependencies/katex')
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diff --git a/webapp/non_npm_dependencies/katex/LICENSE.txt b/webapp/non_npm_dependencies/katex/LICENSE.txt deleted file mode 100644 index f7b2d38cd..000000000 --- a/webapp/non_npm_dependencies/katex/LICENSE.txt +++ /dev/null @@ -1,27 +0,0 @@ -The MIT License (MIT) - -Copyright (c) 2015 Khan Academy - -This software also uses portions of the underscore.js project, which is -MIT licensed with the following copyright: - -Copyright (c) 2009-2015 Jeremy Ashkenas, DocumentCloud and Investigative -Reporters & Editors - -Permission is hereby granted, free of charge, to any person obtaining a copy -of this software and associated documentation files (the "Software"), to deal -in the Software without restriction, including without limitation the rights -to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -copies of the Software, and to permit persons to whom the Software is -furnished to do so, subject to the following conditions: - -The above copyright notice and this permission notice shall be included in all -copies or substantial portions of the Software. - -THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE -SOFTWARE. diff --git a/webapp/non_npm_dependencies/katex/README.md b/webapp/non_npm_dependencies/katex/README.md deleted file mode 100644 index 31cf658d8..000000000 --- a/webapp/non_npm_dependencies/katex/README.md +++ /dev/null @@ -1,68 +0,0 @@ -# [<img src="https://khan.github.io/KaTeX/katex-logo.svg" width="130" alt="KaTeX">](https://khan.github.io/KaTeX/) [](https://travis-ci.org/Khan/KaTeX) - -[](https://gitter.im/Khan/KaTeX?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge) - -KaTeX is a fast, easy-to-use JavaScript library for TeX math rendering on the web. - - * **Fast:** KaTeX renders its math synchronously and doesn't need to reflow the page. See how it compares to a competitor in [this speed test](http://jsperf.com/katex-vs-mathjax/). - * **Print quality:** KaTeX’s layout is based on Donald Knuth’s TeX, the gold standard for math typesetting. - * **Self contained:** KaTeX has no dependencies and can easily be bundled with your website resources. - * **Server side rendering:** KaTeX produces the same output regardless of browser or environment, so you can pre-render expressions using Node.js and send them as plain HTML. - -KaTeX supports all major browsers, including Chrome, Safari, Firefox, Opera, and IE 8 - IE 11. A list of supported commands can be on the [wiki](https://github.com/Khan/KaTeX/wiki/Function-Support-in-KaTeX). - -## Usage - -You can [download KaTeX](https://github.com/khan/katex/releases) and host it on your server or include the `katex.min.js` and `katex.min.css` files on your page directly from a CDN: - -```html -<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/katex.min.css"> -<script src="https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/katex.min.js"></script> -``` - -#### In-browser rendering - -Call `katex.render` with a TeX expression and a DOM element to render into: - -```js -katex.render("c = \\pm\\sqrt{a^2 + b^2}", element); -``` - -If KaTeX can't parse the expression, it throws a `katex.ParseError` error. - -#### Server side rendering or rendering to a string - -To generate HTML on the server or to generate an HTML string of the rendered math, you can use `katex.renderToString`: - -```js -var html = katex.renderToString("c = \\pm\\sqrt{a^2 + b^2}"); -// '<span class="katex">...</span>' -``` - -Make sure to include the CSS and font files, but there is no need to include the JavaScript. Like `render`, `renderToString` throws if it can't parse the expression. - -#### Rendering options - -You can provide an object of options as the last argument to `katex.render` and `katex.renderToString`. Available options are: - -- `displayMode`: `boolean`. If `true` the math will be rendered in display mode, which will put the math in display style (so `\int` and `\sum` are large, for example), and will center the math on the page on its own line. If `false` the math will be rendered in inline mode. (default: `false`) -- `throwOnError`: `boolean`. If `true`, KaTeX will throw a `ParseError` when it encounters an unsupported command. If `false`, KaTeX will render the unsupported command as text in the color given by `errorColor`. (default: `true`) -- `errorColor`: `string`. A color string given in the format `"#XXX"` or `"#XXXXXX"`. This option determines the color which unsupported commands are rendered in. (default: `#cc0000`) - -For example: - -```js -katex.render("c = \\pm\\sqrt{a^2 + b^2}", element, { displayMode: true }); -``` - -#### Automatic rendering of math on a page - -Math on the page can be automatically rendered using the auto-render extension. See [the Auto-render README](contrib/auto-render/README.md) for more information. - -## Contributing - -See [CONTRIBUTING.md](CONTRIBUTING.md) - -## License - -KaTeX is licensed under the [MIT License](http://opensource.org/licenses/MIT). diff --git a/webapp/non_npm_dependencies/katex/cli.js b/webapp/non_npm_dependencies/katex/cli.js deleted file mode 100755 index b64de377c..000000000 --- a/webapp/non_npm_dependencies/katex/cli.js +++ /dev/null @@ -1,32 +0,0 @@ -#!/usr/bin/env node -// Simple CLI for KaTeX. -// Reads TeX from stdin, outputs HTML to stdout. -/* eslint no-console:0 */ - -var katex = require("./"); -var input = ""; - -// Skip the first two args, which are just "node" and "cli.js" -var args = process.argv.slice(2); - -if (args.indexOf("--help") !== -1) { - console.log(process.argv[0] + " " + process.argv[1] + - " [ --help ]" + - " [ --display-mode ]"); - - console.log("\n" + - "Options:"); - console.log(" --help Display this help message"); - console.log(" --display-mode Render in display mode (not inline mode)"); - process.exit(); -} - -process.stdin.on("data", function(chunk) { - input += chunk.toString(); -}); - -process.stdin.on("end", function() { - var options = { displayMode: args.indexOf("--display-mode") !== -1 }; - var output = katex.renderToString(input, options); - console.log(output); -}); diff --git a/webapp/non_npm_dependencies/katex/dist/README.md b/webapp/non_npm_dependencies/katex/dist/README.md deleted file mode 100644 index 31cf658d8..000000000 --- a/webapp/non_npm_dependencies/katex/dist/README.md +++ /dev/null @@ -1,68 +0,0 @@ -# [<img src="https://khan.github.io/KaTeX/katex-logo.svg" width="130" alt="KaTeX">](https://khan.github.io/KaTeX/) [](https://travis-ci.org/Khan/KaTeX) - -[](https://gitter.im/Khan/KaTeX?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge) - -KaTeX is a fast, easy-to-use JavaScript library for TeX math rendering on the web. - - * **Fast:** KaTeX renders its math synchronously and doesn't need to reflow the page. See how it compares to a competitor in [this speed test](http://jsperf.com/katex-vs-mathjax/). - * **Print quality:** KaTeX’s layout is based on Donald Knuth’s TeX, the gold standard for math typesetting. - * **Self contained:** KaTeX has no dependencies and can easily be bundled with your website resources. - * **Server side rendering:** KaTeX produces the same output regardless of browser or environment, so you can pre-render expressions using Node.js and send them as plain HTML. - -KaTeX supports all major browsers, including Chrome, Safari, Firefox, Opera, and IE 8 - IE 11. A list of supported commands can be on the [wiki](https://github.com/Khan/KaTeX/wiki/Function-Support-in-KaTeX). - -## Usage - -You can [download KaTeX](https://github.com/khan/katex/releases) and host it on your server or include the `katex.min.js` and `katex.min.css` files on your page directly from a CDN: - -```html -<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/katex.min.css"> -<script src="https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/katex.min.js"></script> -``` - -#### In-browser rendering - -Call `katex.render` with a TeX expression and a DOM element to render into: - -```js -katex.render("c = \\pm\\sqrt{a^2 + b^2}", element); -``` - -If KaTeX can't parse the expression, it throws a `katex.ParseError` error. - -#### Server side rendering or rendering to a string - -To generate HTML on the server or to generate an HTML string of the rendered math, you can use `katex.renderToString`: - -```js -var html = katex.renderToString("c = \\pm\\sqrt{a^2 + b^2}"); -// '<span class="katex">...</span>' -``` - -Make sure to include the CSS and font files, but there is no need to include the JavaScript. Like `render`, `renderToString` throws if it can't parse the expression. - -#### Rendering options - -You can provide an object of options as the last argument to `katex.render` and `katex.renderToString`. Available options are: - -- `displayMode`: `boolean`. If `true` the math will be rendered in display mode, which will put the math in display style (so `\int` and `\sum` are large, for example), and will center the math on the page on its own line. If `false` the math will be rendered in inline mode. (default: `false`) -- `throwOnError`: `boolean`. If `true`, KaTeX will throw a `ParseError` when it encounters an unsupported command. If `false`, KaTeX will render the unsupported command as text in the color given by `errorColor`. (default: `true`) -- `errorColor`: `string`. A color string given in the format `"#XXX"` or `"#XXXXXX"`. This option determines the color which unsupported commands are rendered in. (default: `#cc0000`) - -For example: - -```js -katex.render("c = \\pm\\sqrt{a^2 + b^2}", element, { displayMode: true }); -``` - -#### Automatic rendering of math on a page - -Math on the page can be automatically rendered using the auto-render extension. See [the Auto-render README](contrib/auto-render/README.md) for more information. - -## Contributing - -See [CONTRIBUTING.md](CONTRIBUTING.md) - -## License - -KaTeX is licensed under the [MIT License](http://opensource.org/licenses/MIT). diff --git a/webapp/non_npm_dependencies/katex/dist/contrib/auto-render.min.js b/webapp/non_npm_dependencies/katex/dist/contrib/auto-render.min.js deleted file mode 100644 index 30cc31214..000000000 --- a/webapp/non_npm_dependencies/katex/dist/contrib/auto-render.min.js +++ /dev/null @@ -1 +0,0 @@ -(function(e){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=e()}else if(typeof define==="function"&&define.amd){define([],e)}else{var t;if(typeof window!=="undefined"){t=window}else if(typeof global!=="undefined"){t=global}else if(typeof self!=="undefined"){t=self}else{t=this}t.renderMathInElement=e()}})(function(){var e,t,r;return function n(e,t,r){function a(o,l){if(!t[o]){if(!e[o]){var f=typeof require=="function"&&require;if(!l&&f)return f(o,!0);if(i)return i(o,!0);var d=new Error("Cannot find module '"+o+"'");throw d.code="MODULE_NOT_FOUND",d}var s=t[o]={exports:{}};e[o][0].call(s.exports,function(t){var r=e[o][1][t];return a(r?r:t)},s,s.exports,n,e,t,r)}return t[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)a(r[o]);return a}({1:[function(e,t,r){var n=e("./splitAtDelimiters");var a=function(e,t){var r=[{type:"text",data:e}];for(var a=0;a<t.length;a++){var i=t[a];r=n(r,i.left,i.right,i.display||false)}return r};var i=function(e,t){var r=a(e,t);var n=document.createDocumentFragment();for(var i=0;i<r.length;i++){if(r[i].type==="text"){n.appendChild(document.createTextNode(r[i].data))}else{var o=document.createElement("span");var l=r[i].data;try{katex.render(l,o,{displayMode:r[i].display})}catch(f){if(!(f instanceof katex.ParseError)){throw f}console.error("KaTeX auto-render: Failed to parse `"+r[i].data+"` with 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l=["\\Gamma","\\Delta","\\Theta","\\Lambda","\\Xi","\\Pi","\\Sigma","\\Upsilon","\\Phi","\\Psi","\\Omega"];var o=["\u0131","\u0237"];var u=function(e,t,r,s,l){if(n[r][e]&&n[r][e].replace){e=n[r][e].replace}var o=i.getCharacterMetrics(e,t);var u;if(o){u=new a.symbolNode(e,o.height,o.depth,o.italic,o.skew,l)}else{typeof console!=="undefined"&&console.warn("No character metrics for '"+e+"' in style '"+t+"'");u=new a.symbolNode(e,0,0,0,0,l)}if(s){u.style.color=s}return u};var p=function(e,t,r,a){if(e==="\\"||n[t][e].font==="main"){return u(e,"Main-Regular",t,r,a)}else{return u(e,"AMS-Regular",t,r,a.concat(["amsrm"]))}};var h=function(e,t,r,a,i){if(i==="mathord"){return c(e,t,r,a)}else if(i==="textord"){return u(e,"Main-Regular",t,r,a.concat(["mathrm"]))}else{throw new Error("unexpected type: "+i+" in mathDefault")}};var c=function(e,t,r,a){if(/[0-9]/.test(e.charAt(0))||s.contains(o,e)||s.contains(l,e)){return u(e,"Main-Italic",t,r,a.concat(["mainit"]))}else{return u(e,"Math-Italic",t,r,a.concat(["mathit"]))}};var v=function(e,t,r){var a=e.mode;var l=e.value;if(n[a][l]&&n[a][l].replace){l=n[a][l].replace}var p=["mord"];var v=t.getColor();var m=t.font;if(m){if(m==="mathit"||s.contains(o,l)){return c(l,a,v,p)}else{var f=w[m].fontName;if(i.getCharacterMetrics(l,f)){return u(l,f,a,v,p.concat([m]))}else{return h(l,a,v,p,r)}}}else{return h(l,a,v,p,r)}};var m=function(e){var t=0;var r=0;var a=0;if(e.children){for(var i=0;i<e.children.length;i++){if(e.children[i].height>t){t=e.children[i].height}if(e.children[i].depth>r){r=e.children[i].depth}if(e.children[i].maxFontSize>a){a=e.children[i].maxFontSize}}}e.height=t;e.depth=r;e.maxFontSize=a};var f=function(e,t,r){var i=new a.span(e,t);m(i);if(r){i.style.color=r}return i};var d=function(e){var t=new a.documentFragment(e);m(t);return t};var g=function(e,t){var r=f([],[new a.symbolNode("\u200b")]);r.style.fontSize=t/e.style.sizeMultiplier+"em";var i=f(["fontsize-ensurer","reset-"+e.size,"size5"],[r]);return i};var y=function(e,t,r,i){var n;var s;var l;if(t==="individualShift"){var o=e;e=[o[0]];n=-o[0].shift-o[0].elem.depth;s=n;for(l=1;l<o.length;l++){var u=-o[l].shift-s-o[l].elem.depth;var p=u-(o[l-1].elem.height+o[l-1].elem.depth);s=s+u;e.push({type:"kern",size:p});e.push(o[l])}}else if(t==="top"){var h=r;for(l=0;l<e.length;l++){if(e[l].type==="kern"){h-=e[l].size}else{h-=e[l].elem.height+e[l].elem.depth}}n=h}else if(t==="bottom"){n=-r}else if(t==="shift"){n=-e[0].elem.depth-r}else if(t==="firstBaseline"){n=-e[0].elem.depth}else{n=0}var c=0;for(l=0;l<e.length;l++){if(e[l].type==="elem"){c=Math.max(c,e[l].elem.maxFontSize)}}var v=g(i,c);var m=[];s=n;for(l=0;l<e.length;l++){if(e[l].type==="kern"){s+=e[l].size}else{var d=e[l].elem;var y=-d.depth-s;s+=d.height+d.depth;var b=f([],[v,d]);b.height-=y;b.depth+=y;b.style.top=y+"em";m.push(b)}}var x=f(["baseline-fix"],[v,new a.symbolNode("\u200b")]);m.push(x);var w=f(["vlist"],m);w.height=Math.max(s,w.height);w.depth=Math.max(-n,w.depth);return w};var b={size1:.5,size2:.7,size3:.8,size4:.9,size5:1,size6:1.2,size7:1.44,size8:1.73,size9:2.07,size10:2.49};var x={"\\qquad":{size:"2em",className:"qquad"},"\\quad":{size:"1em",className:"quad"},"\\enspace":{size:"0.5em",className:"enspace"},"\\;":{size:"0.277778em",className:"thickspace"},"\\:":{size:"0.22222em",className:"mediumspace"},"\\,":{size:"0.16667em",className:"thinspace"},"\\!":{size:"-0.16667em",className:"negativethinspace"}};var w={mathbf:{variant:"bold",fontName:"Main-Bold"},mathrm:{variant:"normal",fontName:"Main-Regular"},mathbb:{variant:"double-struck",fontName:"AMS-Regular"},mathcal:{variant:"script",fontName:"Caligraphic-Regular"},mathfrak:{variant:"fraktur",fontName:"Fraktur-Regular"},mathscr:{variant:"script",fontName:"Script-Regular"},mathsf:{variant:"sans-serif",fontName:"SansSerif-Regular"},mathtt:{variant:"monospace",fontName:"Typewriter-Regular"}};t.exports={fontMap:w,makeSymbol:u,mathsym:p,makeSpan:f,makeFragment:d,makeVList:y,makeOrd:v,sizingMultiplier:b,spacingFunctions:x}},{"./domTree":14,"./fontMetrics":16,"./symbols":22,"./utils":23}],10:[function(e,t,r){var a=e("./ParseError");var i=e("./Style");var n=e("./buildCommon");var s=e("./delimiter");var l=e("./domTree");var o=e("./fontMetrics");var u=e("./utils");var p=n.makeSpan;var h=function(e,t,r){var a=[];for(var i=0;i<e.length;i++){var n=e[i];a.push(b(n,t,r));r=n}return a};var c={mathord:"mord",textord:"mord",bin:"mbin",rel:"mrel",text:"mord",open:"mopen",close:"mclose",inner:"minner",genfrac:"mord",array:"mord",spacing:"mord",punct:"mpunct",ordgroup:"mord",op:"mop",katex:"mord",overline:"mord",rule:"mord",leftright:"minner",sqrt:"mord",accent:"mord"};var v=function(e){if(e==null){return c.mathord}else if(e.type==="supsub"){return v(e.value.base)}else if(e.type==="llap"||e.type==="rlap"){return v(e.value)}else if(e.type==="color"){return v(e.value.value)}else if(e.type==="sizing"){return v(e.value.value)}else if(e.type==="styling"){return v(e.value.value)}else if(e.type==="delimsizing"){return c[e.value.delimType]}else{return c[e.type]}};var m=function(e,t){if(!e){return false}else if(e.type==="op"){return e.value.limits&&(t.style.size===i.DISPLAY.size||e.value.alwaysHandleSupSub)}else if(e.type==="accent"){return d(e.value.base)}else{return null}};var f=function(e){if(!e){return false}else if(e.type==="ordgroup"){if(e.value.length===1){return 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n.mathsym(e.value,e.mode,t.getColor(),["mclose"])};y.inner=function(e,t,r){return n.mathsym(e.value,e.mode,t.getColor(),["minner"])};y.punct=function(e,t,r){return n.mathsym(e.value,e.mode,t.getColor(),["mpunct"])};y.ordgroup=function(e,t,r){return p(["mord",t.style.cls()],h(e.value,t.reset()))};y.text=function(e,t,r){return p(["text","mord",t.style.cls()],h(e.value.body,t.reset()))};y.color=function(e,t,r){var a=h(e.value.value,t.withColor(e.value.color),r);return new n.makeFragment(a)};y.supsub=function(e,t,r){if(m(e.value.base,t)){return y[e.value.base.type](e,t,r)}var a=b(e.value.base,t.reset());var s;var u;var h;var c;if(e.value.sup){h=b(e.value.sup,t.withStyle(t.style.sup()));s=p([t.style.reset(),t.style.sup().cls()],[h])}if(e.value.sub){c=b(e.value.sub,t.withStyle(t.style.sub()));u=p([t.style.reset(),t.style.sub().cls()],[c])}var f;var g;if(d(e.value.base)){f=0;g=0}else{f=a.height-o.metrics.supDrop;g=a.depth+o.metrics.subDrop}var x;if(t.style===i.DISPLAY){x=o.metrics.sup1}else 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a=p(["inner"],[b(e.value.body,t.reset())]);var i=p(["fix"],[]);return p(["rlap",t.style.cls()],[a,i])};y.op=function(e,t,r){var a;var s;var l=false;if(e.type==="supsub"){a=e.value.sup;s=e.value.sub;e=e.value.base;l=true}var h=["\\smallint"];var c=false;if(t.style.size===i.DISPLAY.size&&e.value.symbol&&!u.contains(h,e.value.body)){c=true}var v;var m=0;var f=0;if(e.value.symbol){var d=c?"Size2-Regular":"Size1-Regular";v=n.makeSymbol(e.value.body,d,"math",t.getColor(),["op-symbol",c?"large-op":"small-op","mop"]);m=(v.height-v.depth)/2-o.metrics.axisHeight*t.style.sizeMultiplier;f=v.italic}else{var g=[];for(var y=1;y<e.value.body.length;y++){g.push(n.mathsym(e.value.body[y],e.mode))}v=p(["mop"],g,t.getColor())}if(l){v=p([],[v]);var x;var w;var k;var z;if(a){var S=b(a,t.withStyle(t.style.sup()));x=p([t.style.reset(),t.style.sup().cls()],[S]);w=Math.max(o.metrics.bigOpSpacing1,o.metrics.bigOpSpacing3-S.depth)}if(s){var 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n.TextNode(e.value.rightDelim)]);s.setAttribute("fence","true");a.push(s)}var l=new n.MathNode("mrow",a);return l}return r};v.array=function(e,t){return new n.MathNode("mtable",e.value.body.map(function(e){return new n.MathNode("mtr",e.map(function(e){return new n.MathNode("mtd",[f(e,t)])}))}))};v.sqrt=function(e,t){var r;if(e.value.index){r=new n.MathNode("mroot",[f(e.value.body,t),f(e.value.index,t)])}else{r=new n.MathNode("msqrt",[f(e.value.body,t)])}return r};v.leftright=function(e,t){var r=m(e.value.body,t);if(e.value.left!=="."){var a=new n.MathNode("mo",[h(e.value.left,e.mode)]);a.setAttribute("fence","true");r.unshift(a)}if(e.value.right!=="."){var i=new n.MathNode("mo",[h(e.value.right,e.mode)]);i.setAttribute("fence","true");r.push(i)}var s=new n.MathNode("mrow",r);return s};v.accent=function(e,t){var r=new n.MathNode("mo",[h(e.value.accent,e.mode)]);var a=new n.MathNode("mover",[f(e.value.base,t),r]);a.setAttribute("accent","true");return a};v.spacing=function(e){var t;if(e.value==="\\ "||e.value==="\\space"||e.value===" "||e.value==="~"){t=new n.MathNode("mtext",[new n.TextNode("\xa0")])}else{t=new n.MathNode("mspace");t.setAttribute("width",a.spacingFunctions[e.value].size)}return t};v.op=function(e){var t;if(e.value.symbol){t=new n.MathNode("mo",[h(e.value.body,e.mode)])}else{t=new n.MathNode("mi",[new n.TextNode(e.value.body.slice(1))])}return t};v.katex=function(e){var t=new n.MathNode("mtext",[new n.TextNode("KaTeX")]);return t};v.font=function(e,t){var r=e.value.font;return f(e.value.body,t.withFont(r))};v.delimsizing=function(e){var t=[];if(e.value.value!=="."){t.push(h(e.value.value,e.mode))}var r=new n.MathNode("mo",t);if(e.value.delimType==="open"||e.value.delimType==="close"){r.setAttribute("fence","true")}else{r.setAttribute("fence","false")}return r};v.styling=function(e,t){var r=m(e.value.value,t);var a=new n.MathNode("mstyle",r);var i={display:["0","true"],text:["0","false"],script:["1","false"],scriptscript:["2","false"]};var s=i[e.value.style];a.setAttribute("scriptlevel",s[0]);a.setAttribute("displaystyle",s[1]);return a};v.sizing=function(e,t){var r=m(e.value.value,t);var i=new n.MathNode("mstyle",r);i.setAttribute("mathsize",a.sizingMultiplier[e.value.size]+"em");return i};v.overline=function(e,t){var r=new n.MathNode("mo",[new n.TextNode("\u203e")]);r.setAttribute("stretchy","true");var a=new n.MathNode("mover",[f(e.value.body,t),r]);a.setAttribute("accent","true");return a};v.rule=function(e){var t=new n.MathNode("mrow");return t};v.llap=function(e,t){var r=new n.MathNode("mpadded",[f(e.value.body,t)]);r.setAttribute("lspace","-1width");r.setAttribute("width","0px");return r};v.rlap=function(e,t){var r=new n.MathNode("mpadded",[f(e.value.body,t)]);r.setAttribute("width","0px");return r};v.phantom=function(e,t,r){var a=m(e.value.value,t);return new n.MathNode("mphantom",a)};var m=function(e,t){var r=[];for(var a=0;a<e.length;a++){var i=e[a];r.push(f(i,t))}return r};var f=function(e,t){if(!e){return new n.MathNode("mrow")}if(v[e.type]){return v[e.type](e,t)}else{throw new s("Got group of unknown type: '"+e.type+"'")}};var d=function(e,t,r){var a=m(e,r);var i=new n.MathNode("mrow",a);var s=new n.MathNode("annotation",[new n.TextNode(t)]);s.setAttribute("encoding","application/x-tex");var l=new n.MathNode("semantics",[i,s]);var o=new n.MathNode("math",[l]);return u(["katex-mathml"],[o])};t.exports=d},{"./ParseError":5,"./buildCommon":9,"./fontMetrics":16,"./mathMLTree":19,"./symbols":22,"./utils":23}],12:[function(e,t,r){var a=e("./buildHTML");var i=e("./buildMathML");var n=e("./buildCommon");var s=e("./Options");var l=e("./Settings");var o=e("./Style");var u=n.makeSpan;var p=function(e,t,r){r=r||new l({});var n=o.TEXT;if(r.displayMode){n=o.DISPLAY}var p=new s({style:n,size:"size5"});var h=i(e,t,p);var c=a(e,p);var v=u(["katex"],[h,c]);if(r.displayMode){return u(["katex-display"],[v])}else{return v}};t.exports=p},{"./Options":4,"./Settings":7,"./Style":8,"./buildCommon":9,"./buildHTML":10,"./buildMathML":11}],13:[function(e,t,r){var a=e("./ParseError");var i=e("./Style");var n=e("./buildCommon");var s=e("./fontMetrics");var l=e("./symbols");var o=e("./utils");var u=n.makeSpan;var p=function(e,t){if(l.math[e]&&l.math[e].replace){return s.getCharacterMetrics(l.math[e].replace,t)}else{return s.getCharacterMetrics(e,t)}};var h=function(e,t,r){return n.makeSymbol(e,"Size"+t+"-Regular",r)};var c=function(e,t,r){var a=u(["style-wrap",r.style.reset(),t.cls()],[e]);var i=t.sizeMultiplier/r.style.sizeMultiplier;a.height*=i;a.depth*=i;a.maxFontSize=t.sizeMultiplier;return a};var v=function(e,t,r,a,i){var l=n.makeSymbol(e,"Main-Regular",i);var o=c(l,t,a);if(r){var u=(1-a.style.sizeMultiplier/t.sizeMultiplier)*s.metrics.axisHeight;o.style.top=u+"em";o.height-=u;o.depth+=u}return o};var m=function(e,t,r,a,n){var l=h(e,t,n);var o=c(u(["delimsizing","size"+t],[l],a.getColor()),i.TEXT,a);if(r){var p=(1-a.style.sizeMultiplier)*s.metrics.axisHeight;o.style.top=p+"em";o.height-=p;o.depth+=p}return o};var f=function(e,t,r){var a;if(t==="Size1-Regular"){a="delim-size1"}else if(t==="Size4-Regular"){a="delim-size4"}var i=u(["delimsizinginner",a],[u([],[n.makeSymbol(e,t,r)])]);return{type:"elem",elem:i}};var d=function(e,t,r,a,l){var o;var h;var v;var m;o=v=m=e;h=null;var d="Size1-Regular";if(e==="\\uparrow"){v=m="\u23d0"}else if(e==="\\Uparrow"){v=m="\u2016"}else if(e==="\\downarrow"){o=v="\u23d0"}else if(e==="\\Downarrow"){o=v="\u2016"}else if(e==="\\updownarrow"){o="\\uparrow";v="\u23d0";m="\\downarrow"}else if(e==="\\Updownarrow"){o="\\Uparrow";v="\u2016";m="\\Downarrow"}else if(e==="["||e==="\\lbrack"){o="\u23a1";v="\u23a2";m="\u23a3";d="Size4-Regular"}else if(e==="]"||e==="\\rbrack"){o="\u23a4";v="\u23a5";m="\u23a6";d="Size4-Regular"}else if(e==="\\lfloor"){v=o="\u23a2";m="\u23a3";d="Size4-Regular"}else 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k=w.height+w.depth;var z=0;var S=1;if(h!==null){var M=p(h,d);z=M.height+M.depth;S=2}var T=y+k+z;var q=Math.ceil((t-T)/(S*x));var N=T+q*S*x;var A=s.metrics.axisHeight;if(r){A*=a.style.sizeMultiplier}var C=N/2-A;var R=[];R.push(f(m,d,l));var E;if(h===null){for(E=0;E<q;E++){R.push(f(v,d,l))}}else{for(E=0;E<q;E++){R.push(f(v,d,l))}R.push(f(h,d,l));for(E=0;E<q;E++){R.push(f(v,d,l))}}R.push(f(o,d,l));var P=n.makeVList(R,"bottom",C,a);return c(u(["delimsizing","mult"],[P],a.getColor()),i.TEXT,a)};var g=["(",")","[","\\lbrack","]","\\rbrack","\\{","\\lbrace","\\}","\\rbrace","\\lfloor","\\rfloor","\\lceil","\\rceil","\\surd"];var y=["\\uparrow","\\downarrow","\\updownarrow","\\Uparrow","\\Downarrow","\\Updownarrow","|","\\|","\\vert","\\Vert","\\lvert","\\rvert","\\lVert","\\rVert","\\lgroup","\\rgroup","\\lmoustache","\\rmoustache"];var b=["<",">","\\langle","\\rangle","/","\\backslash","\\lt","\\gt"];var x=[0,1.2,1.8,2.4,3];var w=function(e,t,r,i){if(e==="<"||e==="\\lt"){e="\\langle"}else 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Here, we expose functions for - * rendering expressions either to DOM nodes or to markup strings. - * - * We also expose the ParseError class to check if errors thrown from KaTeX are - * errors in the expression, or errors in javascript handling. - */ - -var ParseError = require("./src/ParseError"); -var Settings = require("./src/Settings"); - -var buildTree = require("./src/buildTree"); -var parseTree = require("./src/parseTree"); -var utils = require("./src/utils"); - -/** - * Parse and build an expression, and place that expression in the DOM node - * given. - */ -var render = function(expression, baseNode, options) { - utils.clearNode(baseNode); - - var settings = new Settings(options); - - var tree = parseTree(expression, settings); - var node = buildTree(tree, expression, settings).toNode(); - - baseNode.appendChild(node); -}; - -// KaTeX's styles don't work properly in quirks mode. Print out an error, and -// disable rendering. -if (typeof document !== "undefined") { - if (document.compatMode !== "CSS1Compat") { - typeof console !== "undefined" && console.warn( - "Warning: KaTeX doesn't work in quirks mode. Make sure your " + - "website has a suitable doctype."); - - render = function() { - throw new ParseError("KaTeX doesn't work in quirks mode."); - }; - } -} - -/** - * Parse and build an expression, and return the markup for that. - */ -var renderToString = function(expression, options) { - var settings = new Settings(options); - - var tree = parseTree(expression, settings); - return buildTree(tree, expression, settings).toMarkup(); -}; - -/** - * Parse an expression and return the parse tree. - */ -var generateParseTree = function(expression, options) { - var settings = new Settings(options); - return parseTree(expression, settings); -}; - -module.exports = { - render: render, - renderToString: renderToString, - /** - * NOTE: This method is not currently recommended for public use. - * The internal tree representation is unstable and is very likely - * to change. Use at your own risk. - */ - __parse: generateParseTree, - ParseError: ParseError, -}; diff --git a/webapp/non_npm_dependencies/katex/package.json b/webapp/non_npm_dependencies/katex/package.json deleted file mode 100644 index 24b6c6936..000000000 --- a/webapp/non_npm_dependencies/katex/package.json +++ /dev/null @@ -1,41 +0,0 @@ -{ - "name": "katex", - "version": "0.6.0-pre", - "description": "Fast math typesetting for the web.", - "main": "katex.js", - "repository": { - "type": "git", - "url": "git://github.com/Khan/KaTeX.git" - }, - "files": [ - "katex.js", - "cli.js", - "src/", - "dist/" - ], - "license": "MIT", - "devDependencies": { - "browserify": "^10.2.4", - "clean-css": "~2.2.15", - "eslint": "^1.10.2", - "express": "~3.3.3", - "glob": "^5.0.15", - "jasmine": "^2.3.2", - "jasmine-core": "^2.3.4", - "js-yaml": "^3.3.1", - "jspngopt": "^0.1.0", - "less": "~1.7.5", - "nomnom": "^1.8.1", - "pako": "0.2.7", - "selenium-webdriver": "^2.46.1", - "uglify-js": "~2.4.15" - }, - "bin": "cli.js", - "scripts": { - "test": "make lint test", - "prepublish": "make dist" - }, - "dependencies": { - "match-at": "^0.1.0" - } -} diff --git a/webapp/non_npm_dependencies/katex/src/Lexer.js b/webapp/non_npm_dependencies/katex/src/Lexer.js deleted file mode 100644 index 4d6697c6a..000000000 --- a/webapp/non_npm_dependencies/katex/src/Lexer.js +++ /dev/null @@ -1,162 +0,0 @@ -/** - * The Lexer class handles tokenizing the input in various ways. Since our - * parser expects us to be able to backtrack, the lexer allows lexing from any - * given starting point. - * - * Its main exposed function is the `lex` function, which takes a position to - * lex from and a type of token to lex. It defers to the appropriate `_innerLex` - * function. - * - * The various `_innerLex` functions perform the actual lexing of different - * kinds. - */ - -var matchAt = require("match-at"); - -var ParseError = require("./ParseError"); - -// The main lexer class -function Lexer(input) { - this._input = input; -} - -// The resulting token returned from `lex`. -function Token(text, data, position) { - this.text = text; - this.data = data; - this.position = position; -} - -/* The following tokenRegex - * - matches typical whitespace (but not NBSP etc.) using its first group - * - matches symbol combinations which result in a single output character - * - does not match any control character \x00-\x1f except whitespace - * - does not match a bare backslash - * - matches any ASCII character except those just mentioned - * - does not match the BMP private use area \uE000-\uF8FF - * - does not match bare surrogate code units - * - matches any BMP character except for those just described - * - matches any valid Unicode surrogate pair - * - matches a backslash followed by one or more letters - * - matches a backslash followed by any BMP character, including newline - * Just because the Lexer matches something doesn't mean it's valid input: - * If there is no matching function or symbol definition, the Parser will - * still reject the input. - */ -var tokenRegex = new RegExp( - "([ \r\n\t]+)|(" + // whitespace - "---?" + // special combinations - "|[!-\\[\\]-\u2027\u202A-\uD7FF\uF900-\uFFFF]" + // single codepoint - "|[\uD800-\uDBFF][\uDC00-\uDFFF]" + // surrogate pair - "|\\\\(?:[a-zA-Z]+|[^\uD800-\uDFFF])" + // function name - ")" -); - -var whitespaceRegex = /\s*/; - -/** - * This function lexes a single normal token. It takes a position and - * whether it should completely ignore whitespace or not. - */ -Lexer.prototype._innerLex = function(pos, ignoreWhitespace) { - var input = this._input; - if (pos === input.length) { - return new Token("EOF", null, pos); - } - var match = matchAt(tokenRegex, input, pos); - if (match === null) { - throw new ParseError( - "Unexpected character: '" + input[pos] + "'", - this, pos); - } else if (match[2]) { // matched non-whitespace - return new Token(match[2], null, pos + match[2].length); - } else if (ignoreWhitespace) { - return this._innerLex(pos + match[1].length, true); - } else { // concatenate whitespace to a single space - return new Token(" ", null, pos + match[1].length); - } -}; - -// A regex to match a CSS color (like #ffffff or BlueViolet) -var cssColor = /#[a-z0-9]+|[a-z]+/i; - -/** - * This function lexes a CSS color. - */ -Lexer.prototype._innerLexColor = function(pos) { - var input = this._input; - - // Ignore whitespace - var whitespace = matchAt(whitespaceRegex, input, pos)[0]; - pos += whitespace.length; - - var match; - if ((match = matchAt(cssColor, input, pos))) { - // If we look like a color, return a color - return new Token(match[0], null, pos + match[0].length); - } else { - throw new ParseError("Invalid color", this, pos); - } -}; - -// A regex to match a dimension. Dimensions look like -// "1.2em" or ".4pt" or "1 ex" -var sizeRegex = /(-?)\s*(\d+(?:\.\d*)?|\.\d+)\s*([a-z]{2})/; - -/** - * This function lexes a dimension. - */ -Lexer.prototype._innerLexSize = function(pos) { - var input = this._input; - - // Ignore whitespace - var whitespace = matchAt(whitespaceRegex, input, pos)[0]; - pos += whitespace.length; - - var match; - if ((match = matchAt(sizeRegex, input, pos))) { - var unit = match[3]; - // We only currently handle "em" and "ex" units - if (unit !== "em" && unit !== "ex") { - throw new ParseError("Invalid unit: '" + unit + "'", this, pos); - } - return new Token(match[0], { - number: +(match[1] + match[2]), - unit: unit, - }, pos + match[0].length); - } - - throw new ParseError("Invalid size", this, pos); -}; - -/** - * This function lexes a string of whitespace. - */ -Lexer.prototype._innerLexWhitespace = function(pos) { - var input = this._input; - - var whitespace = matchAt(whitespaceRegex, input, pos)[0]; - pos += whitespace.length; - - return new Token(whitespace[0], null, pos); -}; - -/** - * This function lexes a single token starting at `pos` and of the given mode. - * Based on the mode, we defer to one of the `_innerLex` functions. - */ -Lexer.prototype.lex = function(pos, mode) { - if (mode === "math") { - return this._innerLex(pos, true); - } else if (mode === "text") { - return this._innerLex(pos, false); - } else if (mode === "color") { - return this._innerLexColor(pos); - } else if (mode === "size") { - return this._innerLexSize(pos); - } else if (mode === "whitespace") { - return this._innerLexWhitespace(pos); - } -}; - -module.exports = Lexer; diff --git a/webapp/non_npm_dependencies/katex/src/Options.js b/webapp/non_npm_dependencies/katex/src/Options.js deleted file mode 100644 index 39ff37bfc..000000000 --- a/webapp/non_npm_dependencies/katex/src/Options.js +++ /dev/null @@ -1,189 +0,0 @@ -/** - * This file contains information about the options that the Parser carries - * around with it while parsing. Data is held in an `Options` object, and when - * recursing, a new `Options` object can be created with the `.with*` and - * `.reset` functions. - */ - -/** - * This is the main options class. It contains the style, size, color, and font - * of the current parse level. It also contains the style and size of the parent - * parse level, so size changes can be handled efficiently. - * - * Each of the `.with*` and `.reset` functions passes its current style and size - * as the parentStyle and parentSize of the new options class, so parent - * handling is taken care of automatically. - */ -function Options(data) { - this.style = data.style; - this.color = data.color; - this.size = data.size; - this.phantom = data.phantom; - this.font = data.font; - - if (data.parentStyle === undefined) { - this.parentStyle = data.style; - } else { - this.parentStyle = data.parentStyle; - } - - if (data.parentSize === undefined) { - this.parentSize = data.size; - } else { - this.parentSize = data.parentSize; - } -} - -/** - * Returns a new options object with the same properties as "this". Properties - * from "extension" will be copied to the new options object. - */ -Options.prototype.extend = function(extension) { - var data = { - style: this.style, - size: this.size, - color: this.color, - parentStyle: this.style, - parentSize: this.size, - phantom: this.phantom, - font: this.font, - }; - - for (var key in extension) { - if (extension.hasOwnProperty(key)) { - data[key] = extension[key]; - } - } - - return new Options(data); -}; - -/** - * Create a new options object with the given style. - */ -Options.prototype.withStyle = function(style) { - return this.extend({ - style: style, - }); -}; - -/** - * Create a new options object with the given size. - */ -Options.prototype.withSize = function(size) { - return this.extend({ - size: size, - }); -}; - -/** - * Create a new options object with the given color. - */ -Options.prototype.withColor = function(color) { - return this.extend({ - color: color, - }); -}; - -/** - * Create a new options object with "phantom" set to true. - */ -Options.prototype.withPhantom = function() { - return this.extend({ - phantom: true, - }); -}; - -/** - * Create a new options objects with the give font. - */ -Options.prototype.withFont = function(font) { - return this.extend({ - font: font, - }); -}; - -/** - * Create a new options object with the same style, size, and color. This is - * used so that parent style and size changes are handled correctly. - */ -Options.prototype.reset = function() { - return this.extend({}); -}; - -/** - * A map of color names to CSS colors. - * TODO(emily): Remove this when we have real macros - */ -var colorMap = { - "katex-blue": "#6495ed", - "katex-orange": "#ffa500", - "katex-pink": "#ff00af", - "katex-red": "#df0030", - "katex-green": "#28ae7b", - "katex-gray": "gray", - "katex-purple": "#9d38bd", - "katex-blueA": "#c7e9f1", - "katex-blueB": "#9cdceb", - "katex-blueC": "#58c4dd", - "katex-blueD": "#29abca", - "katex-blueE": "#1c758a", - "katex-tealA": "#acead7", - "katex-tealB": "#76ddc0", - "katex-tealC": "#5cd0b3", - "katex-tealD": "#55c1a7", - "katex-tealE": "#49a88f", - "katex-greenA": "#c9e2ae", - "katex-greenB": "#a6cf8c", - "katex-greenC": "#83c167", - "katex-greenD": "#77b05d", - "katex-greenE": "#699c52", - "katex-goldA": "#f7c797", - "katex-goldB": "#f9b775", - "katex-goldC": "#f0ac5f", - "katex-goldD": "#e1a158", - "katex-goldE": "#c78d46", - "katex-redA": "#f7a1a3", - "katex-redB": "#ff8080", - "katex-redC": "#fc6255", - "katex-redD": "#e65a4c", - "katex-redE": "#cf5044", - "katex-maroonA": "#ecabc1", - "katex-maroonB": "#ec92ab", - "katex-maroonC": "#c55f73", - "katex-maroonD": "#a24d61", - "katex-maroonE": "#94424f", - "katex-purpleA": "#caa3e8", - "katex-purpleB": "#b189c6", - "katex-purpleC": "#9a72ac", - "katex-purpleD": "#715582", - "katex-purpleE": "#644172", - "katex-mintA": "#f5f9e8", - "katex-mintB": "#edf2df", - "katex-mintC": "#e0e5cc", - "katex-grayA": "#fdfdfd", - "katex-grayB": "#f7f7f7", - "katex-grayC": "#eeeeee", - "katex-grayD": "#dddddd", - "katex-grayE": "#cccccc", - "katex-grayF": "#aaaaaa", - "katex-grayG": "#999999", - "katex-grayH": "#555555", - "katex-grayI": "#333333", - "katex-kaBlue": "#314453", - "katex-kaGreen": "#639b24", -}; - -/** - * Gets the CSS color of the current options object, accounting for the - * `colorMap`. - */ -Options.prototype.getColor = function() { - if (this.phantom) { - return "transparent"; - } else { - return colorMap[this.color] || this.color; - } -}; - -module.exports = Options; diff --git a/webapp/non_npm_dependencies/katex/src/ParseError.js b/webapp/non_npm_dependencies/katex/src/ParseError.js deleted file mode 100644 index 320f0bd69..000000000 --- a/webapp/non_npm_dependencies/katex/src/ParseError.js +++ /dev/null @@ -1,40 +0,0 @@ -/** - * This is the ParseError class, which is the main error thrown by KaTeX - * functions when something has gone wrong. This is used to distinguish internal - * errors from errors in the expression that the user provided. - */ -function ParseError(message, lexer, position) { - var error = "KaTeX parse error: " + message; - - if (lexer !== undefined && position !== undefined) { - // If we have the input and a position, make the error a bit fancier - - // Prepend some information - error += " at position " + position + ": "; - - // Get the input - var input = lexer._input; - // Insert a combining underscore at the correct position - input = input.slice(0, position) + "\u0332" + - input.slice(position); - - // Extract some context from the input and add it to the error - var begin = Math.max(0, position - 15); - var end = position + 15; - error += input.slice(begin, end); - } - - // Some hackery to make ParseError a prototype of Error - // See http://stackoverflow.com/a/8460753 - var self = new Error(error); - self.name = "ParseError"; - self.__proto__ = ParseError.prototype; - - self.position = position; - return self; -} - -// More hackery -ParseError.prototype.__proto__ = Error.prototype; - -module.exports = ParseError; diff --git a/webapp/non_npm_dependencies/katex/src/Parser.js b/webapp/non_npm_dependencies/katex/src/Parser.js deleted file mode 100644 index 15b808e17..000000000 --- a/webapp/non_npm_dependencies/katex/src/Parser.js +++ /dev/null @@ -1,737 +0,0 @@ -/* eslint no-constant-condition:0 */ -var functions = require("./functions"); -var environments = require("./environments"); -var Lexer = require("./Lexer"); -var symbols = require("./symbols"); -var utils = require("./utils"); - -var parseData = require("./parseData"); -var ParseError = require("./ParseError"); - -/** - * This file contains the parser used to parse out a TeX expression from the - * input. Since TeX isn't context-free, standard parsers don't work particularly - * well. - * - * The strategy of this parser is as such: - * - * The main functions (the `.parse...` ones) take a position in the current - * parse string to parse tokens from. The lexer (found in Lexer.js, stored at - * this.lexer) also supports pulling out tokens at arbitrary places. When - * individual tokens are needed at a position, the lexer is called to pull out a - * token, which is then used. - * - * The parser has a property called "mode" indicating the mode that - * the parser is currently in. Currently it has to be one of "math" or - * "text", which denotes whether the current environment is a math-y - * one or a text-y one (e.g. inside \text). Currently, this serves to - * limit the functions which can be used in text mode. - * - * The main functions then return an object which contains the useful data that - * was parsed at its given point, and a new position at the end of the parsed - * data. The main functions can call each other and continue the parsing by - * using the returned position as a new starting point. - * - * There are also extra `.handle...` functions, which pull out some reused - * functionality into self-contained functions. - * - * The earlier functions return ParseNodes. - * The later functions (which are called deeper in the parse) sometimes return - * ParseFuncOrArgument, which contain a ParseNode as well as some data about - * whether the parsed object is a function which is missing some arguments, or a - * standalone object which can be used as an argument to another function. - */ - -/** - * Main Parser class - */ -function Parser(input, settings) { - // Make a new lexer - this.lexer = new Lexer(input); - // Store the settings for use in parsing - this.settings = settings; -} - -var ParseNode = parseData.ParseNode; - -/** - * An initial function (without its arguments), or an argument to a function. - * The `result` argument should be a ParseNode. - */ -function ParseFuncOrArgument(result, isFunction) { - this.result = result; - // Is this a function (i.e. is it something defined in functions.js)? - this.isFunction = isFunction; -} - -/** - * Checks a result to make sure it has the right type, and throws an - * appropriate error otherwise. - * - * @param {boolean=} consume whether to consume the expected token, - * defaults to true - */ -Parser.prototype.expect = function(text, consume) { - if (this.nextToken.text !== text) { - throw new ParseError( - "Expected '" + text + "', got '" + this.nextToken.text + "'", - this.lexer, this.nextToken.position - ); - } - if (consume !== false) { - this.consume(); - } -}; - -/** - * Considers the current look ahead token as consumed, - * and fetches the one after that as the new look ahead. - */ -Parser.prototype.consume = function() { - this.pos = this.nextToken.position; - this.nextToken = this.lexer.lex(this.pos, this.mode); -}; - -/** - * Main parsing function, which parses an entire input. - * - * @return {?Array.<ParseNode>} - */ -Parser.prototype.parse = function() { - // Try to parse the input - this.mode = "math"; - this.pos = 0; - this.nextToken = this.lexer.lex(this.pos, this.mode); - var parse = this.parseInput(); - return parse; -}; - -/** - * Parses an entire input tree. - */ -Parser.prototype.parseInput = function() { - // Parse an expression - var expression = this.parseExpression(false); - // If we succeeded, make sure there's an EOF at the end - this.expect("EOF", false); - return expression; -}; - -var endOfExpression = ["}", "\\end", "\\right", "&", "\\\\", "\\cr"]; - -/** - * Parses an "expression", which is a list of atoms. - * - * @param {boolean} breakOnInfix Should the parsing stop when we hit infix - * nodes? This happens when functions have higher precendence - * than infix nodes in implicit parses. - * - * @param {?string} breakOnToken The token that the expression should end with, - * or `null` if something else should end the expression. - * - * @return {ParseNode} - */ -Parser.prototype.parseExpression = function(breakOnInfix, breakOnToken) { - var body = []; - // Keep adding atoms to the body until we can't parse any more atoms (either - // we reached the end, a }, or a \right) - while (true) { - var lex = this.nextToken; - var pos = this.pos; - if (endOfExpression.indexOf(lex.text) !== -1) { - break; - } - if (breakOnToken && lex.text === breakOnToken) { - break; - } - var atom = this.parseAtom(); - if (!atom) { - if (!this.settings.throwOnError && lex.text[0] === "\\") { - var errorNode = this.handleUnsupportedCmd(); - body.push(errorNode); - - pos = lex.position; - continue; - } - - break; - } - if (breakOnInfix && atom.type === "infix") { - // rewind so we can parse the infix atom again - this.pos = pos; - this.nextToken = lex; - break; - } - body.push(atom); - } - return this.handleInfixNodes(body); -}; - -/** - * Rewrites infix operators such as \over with corresponding commands such - * as \frac. - * - * There can only be one infix operator per group. If there's more than one - * then the expression is ambiguous. This can be resolved by adding {}. - * - * @returns {Array} - */ -Parser.prototype.handleInfixNodes = function(body) { - var overIndex = -1; - var funcName; - - for (var i = 0; i < body.length; i++) { - var node = body[i]; - if (node.type === "infix") { - if (overIndex !== -1) { - throw new ParseError("only one infix operator per group", - this.lexer, -1); - } - overIndex = i; - funcName = node.value.replaceWith; - } - } - - if (overIndex !== -1) { - var numerNode; - var denomNode; - - var numerBody = body.slice(0, overIndex); - var denomBody = body.slice(overIndex + 1); - - if (numerBody.length === 1 && numerBody[0].type === "ordgroup") { - numerNode = numerBody[0]; - } else { - numerNode = new ParseNode("ordgroup", numerBody, this.mode); - } - - if (denomBody.length === 1 && denomBody[0].type === "ordgroup") { - denomNode = denomBody[0]; - } else { - denomNode = new ParseNode("ordgroup", denomBody, this.mode); - } - - var value = this.callFunction( - funcName, [numerNode, denomNode], null); - return [new ParseNode(value.type, value, this.mode)]; - } else { - return body; - } -}; - -// The greediness of a superscript or subscript -var SUPSUB_GREEDINESS = 1; - -/** - * Handle a subscript or superscript with nice errors. - */ -Parser.prototype.handleSupSubscript = function(name) { - var symbol = this.nextToken.text; - var symPos = this.pos; - this.consume(); - var group = this.parseGroup(); - - if (!group) { - if (!this.settings.throwOnError && this.nextToken.text[0] === "\\") { - return this.handleUnsupportedCmd(); - } else { - throw new ParseError( - "Expected group after '" + symbol + "'", - this.lexer, - symPos + 1 - ); - } - } else if (group.isFunction) { - // ^ and _ have a greediness, so handle interactions with functions' - // greediness - var funcGreediness = functions[group.result].greediness; - if (funcGreediness > SUPSUB_GREEDINESS) { - return this.parseFunction(group); - } else { - throw new ParseError( - "Got function '" + group.result + "' with no arguments " + - "as " + name, - this.lexer, symPos + 1); - } - } else { - return group.result; - } -}; - -/** - * Converts the textual input of an unsupported command into a text node - * contained within a color node whose color is determined by errorColor - */ -Parser.prototype.handleUnsupportedCmd = function() { - var text = this.nextToken.text; - var textordArray = []; - - for (var i = 0; i < text.length; i++) { - textordArray.push(new ParseNode("textord", text[i], "text")); - } - - var textNode = new ParseNode( - "text", - { - body: textordArray, - type: "text", - }, - this.mode); - - var colorNode = new ParseNode( - "color", - { - color: this.settings.errorColor, - value: [textNode], - type: "color", - }, - this.mode); - - this.consume(); - return colorNode; -}; - -/** - * Parses a group with optional super/subscripts. - * - * @return {?ParseNode} - */ -Parser.prototype.parseAtom = function() { - // The body of an atom is an implicit group, so that things like - // \left(x\right)^2 work correctly. - var base = this.parseImplicitGroup(); - - // In text mode, we don't have superscripts or subscripts - if (this.mode === "text") { - return base; - } - - // Note that base may be empty (i.e. null) at this point. - - var superscript; - var subscript; - while (true) { - // Lex the first token - var lex = this.nextToken; - - if (lex.text === "\\limits" || lex.text === "\\nolimits") { - // We got a limit control - if (!base || base.type !== "op") { - throw new ParseError( - "Limit controls must follow a math operator", - this.lexer, this.pos); - } else { - var limits = lex.text === "\\limits"; - base.value.limits = limits; - base.value.alwaysHandleSupSub = true; - } - this.consume(); - } else if (lex.text === "^") { - // We got a superscript start - if (superscript) { - throw new ParseError( - "Double superscript", this.lexer, this.pos); - } - superscript = this.handleSupSubscript("superscript"); - } else if (lex.text === "_") { - // We got a subscript start - if (subscript) { - throw new ParseError( - "Double subscript", this.lexer, this.pos); - } - subscript = this.handleSupSubscript("subscript"); - } else if (lex.text === "'") { - // We got a prime - var prime = new ParseNode("textord", "\\prime", this.mode); - - // Many primes can be grouped together, so we handle this here - var primes = [prime]; - this.consume(); - // Keep lexing tokens until we get something that's not a prime - while (this.nextToken.text === "'") { - // For each one, add another prime to the list - primes.push(prime); - this.consume(); - } - // Put them into an ordgroup as the superscript - superscript = new ParseNode("ordgroup", primes, this.mode); - } else { - // If it wasn't ^, _, or ', stop parsing super/subscripts - break; - } - } - - if (superscript || subscript) { - // If we got either a superscript or subscript, create a supsub - return new ParseNode("supsub", { - base: base, - sup: superscript, - sub: subscript, - }, this.mode); - } else { - // Otherwise return the original body - return base; - } -}; - -// A list of the size-changing functions, for use in parseImplicitGroup -var sizeFuncs = [ - "\\tiny", "\\scriptsize", "\\footnotesize", "\\small", "\\normalsize", - "\\large", "\\Large", "\\LARGE", "\\huge", "\\Huge", -]; - -// A list of the style-changing functions, for use in parseImplicitGroup -var styleFuncs = [ - "\\displaystyle", "\\textstyle", "\\scriptstyle", "\\scriptscriptstyle", -]; - -/** - * Parses an implicit group, which is a group that starts at the end of a - * specified, and ends right before a higher explicit group ends, or at EOL. It - * is used for functions that appear to affect the current style, like \Large or - * \textrm, where instead of keeping a style we just pretend that there is an - * implicit grouping after it until the end of the group. E.g. - * small text {\Large large text} small text again - * It is also used for \left and \right to get the correct grouping. - * - * @return {?ParseNode} - */ -Parser.prototype.parseImplicitGroup = function() { - var start = this.parseSymbol(); - - if (start == null) { - // If we didn't get anything we handle, fall back to parseFunction - return this.parseFunction(); - } - - var func = start.result; - var body; - - if (func === "\\left") { - // If we see a left: - // Parse the entire left function (including the delimiter) - var left = this.parseFunction(start); - // Parse out the implicit body - body = this.parseExpression(false); - // Check the next token - this.expect("\\right", false); - var right = this.parseFunction(); - return new ParseNode("leftright", { - body: body, - left: left.value.value, - right: right.value.value, - }, this.mode); - } else if (func === "\\begin") { - // begin...end is similar to left...right - var begin = this.parseFunction(start); - var envName = begin.value.name; - if (!environments.hasOwnProperty(envName)) { - throw new ParseError( - "No such environment: " + envName, - this.lexer, begin.value.namepos); - } - // Build the environment object. Arguments and other information will - // be made available to the begin and end methods using properties. - var env = environments[envName]; - var args = this.parseArguments("\\begin{" + envName + "}", env); - var context = { - mode: this.mode, - envName: envName, - parser: this, - lexer: this.lexer, - positions: args.pop(), - }; - var result = env.handler(context, args); - this.expect("\\end", false); - var end = this.parseFunction(); - if (end.value.name !== envName) { - throw new ParseError( - "Mismatch: \\begin{" + envName + "} matched " + - "by \\end{" + end.value.name + "}", - this.lexer /* , end.value.namepos */); - // TODO: Add position to the above line and adjust test case, - // requires #385 to get merged first - } - result.position = end.position; - return result; - } else if (utils.contains(sizeFuncs, func)) { - // If we see a sizing function, parse out the implict body - body = this.parseExpression(false); - return new ParseNode("sizing", { - // Figure out what size to use based on the list of functions above - size: "size" + (utils.indexOf(sizeFuncs, func) + 1), - value: body, - }, this.mode); - } else if (utils.contains(styleFuncs, func)) { - // If we see a styling function, parse out the implict body - body = this.parseExpression(true); - return new ParseNode("styling", { - // Figure out what style to use by pulling out the style from - // the function name - style: func.slice(1, func.length - 5), - value: body, - }, this.mode); - } else { - // Defer to parseFunction if it's not a function we handle - return this.parseFunction(start); - } -}; - -/** - * Parses an entire function, including its base and all of its arguments. - * The base might either have been parsed already, in which case - * it is provided as an argument, or it's the next group in the input. - * - * @param {ParseFuncOrArgument=} baseGroup optional as described above - * @return {?ParseNode} - */ -Parser.prototype.parseFunction = function(baseGroup) { - if (!baseGroup) { - baseGroup = this.parseGroup(); - } - - if (baseGroup) { - if (baseGroup.isFunction) { - var func = baseGroup.result; - var funcData = functions[func]; - if (this.mode === "text" && !funcData.allowedInText) { - throw new ParseError( - "Can't use function '" + func + "' in text mode", - this.lexer, baseGroup.position); - } - - var args = this.parseArguments(func, funcData); - var result = this.callFunction(func, args, args.pop()); - return new ParseNode(result.type, result, this.mode); - } else { - return baseGroup.result; - } - } else { - return null; - } -}; - -/** - * Call a function handler with a suitable context and arguments. - */ -Parser.prototype.callFunction = function(name, args, positions) { - var context = { - funcName: name, - parser: this, - lexer: this.lexer, - positions: positions, - }; - return functions[name].handler(context, args); -}; - -/** - * Parses the arguments of a function or environment - * - * @param {string} func "\name" or "\begin{name}" - * @param {{numArgs:number,numOptionalArgs:number|undefined}} funcData - * @return the array of arguments, with the list of positions as last element - */ -Parser.prototype.parseArguments = function(func, funcData) { - var totalArgs = funcData.numArgs + funcData.numOptionalArgs; - if (totalArgs === 0) { - return [[this.pos]]; - } - - var baseGreediness = funcData.greediness; - var positions = [this.pos]; - var args = []; - - for (var i = 0; i < totalArgs; i++) { - var argType = funcData.argTypes && funcData.argTypes[i]; - var arg; - if (i < funcData.numOptionalArgs) { - if (argType) { - arg = this.parseSpecialGroup(argType, true); - } else { - arg = this.parseOptionalGroup(); - } - if (!arg) { - args.push(null); - positions.push(this.pos); - continue; - } - } else { - if (argType) { - arg = this.parseSpecialGroup(argType); - } else { - arg = this.parseGroup(); - } - if (!arg) { - if (!this.settings.throwOnError && - this.nextToken.text[0] === "\\") { - arg = new ParseFuncOrArgument( - this.handleUnsupportedCmd(this.nextToken.text), - false); - } else { - throw new ParseError( - "Expected group after '" + func + "'", - this.lexer, this.pos); - } - } - } - var argNode; - if (arg.isFunction) { - var argGreediness = - functions[arg.result].greediness; - if (argGreediness > baseGreediness) { - argNode = this.parseFunction(arg); - } else { - throw new ParseError( - "Got function '" + arg.result + "' as " + - "argument to '" + func + "'", - this.lexer, this.pos - 1); - } - } else { - argNode = arg.result; - } - args.push(argNode); - positions.push(this.pos); - } - - args.push(positions); - - return args; -}; - - -/** - * Parses a group when the mode is changing. Takes a position, a new mode, and - * an outer mode that is used to parse the outside. - * - * @return {?ParseFuncOrArgument} - */ -Parser.prototype.parseSpecialGroup = function(innerMode, optional) { - var outerMode = this.mode; - // Handle `original` argTypes - if (innerMode === "original") { - innerMode = outerMode; - } - - if (innerMode === "color" || innerMode === "size") { - // color and size modes are special because they should have braces and - // should only lex a single symbol inside - var openBrace = this.nextToken; - if (optional && openBrace.text !== "[") { - // optional arguments should return null if they don't exist - return null; - } - // The call to expect will lex the token after the '{' in inner mode - this.mode = innerMode; - this.expect(optional ? "[" : "{"); - var inner = this.nextToken; - this.mode = outerMode; - var data; - if (innerMode === "color") { - data = inner.text; - } else { - data = inner.data; - } - this.consume(); // consume the token stored in inner - this.expect(optional ? "]" : "}"); - return new ParseFuncOrArgument( - new ParseNode(innerMode, data, outerMode), - false); - } else if (innerMode === "text") { - // text mode is special because it should ignore the whitespace before - // it - var whitespace = this.lexer.lex(this.pos, "whitespace"); - this.pos = whitespace.position; - } - - // By the time we get here, innerMode is one of "text" or "math". - // We switch the mode of the parser, recurse, then restore the old mode. - this.mode = innerMode; - this.nextToken = this.lexer.lex(this.pos, innerMode); - var res; - if (optional) { - res = this.parseOptionalGroup(); - } else { - res = this.parseGroup(); - } - this.mode = outerMode; - this.nextToken = this.lexer.lex(this.pos, outerMode); - return res; -}; - -/** - * Parses a group, which is either a single nucleus (like "x") or an expression - * in braces (like "{x+y}") - * - * @return {?ParseFuncOrArgument} - */ -Parser.prototype.parseGroup = function() { - // Try to parse an open brace - if (this.nextToken.text === "{") { - // If we get a brace, parse an expression - this.consume(); - var expression = this.parseExpression(false); - // Make sure we get a close brace - this.expect("}"); - return new ParseFuncOrArgument( - new ParseNode("ordgroup", expression, this.mode), - false); - } else { - // Otherwise, just return a nucleus - return this.parseSymbol(); - } -}; - -/** - * Parses a group, which is an expression in brackets (like "[x+y]") - * - * @return {?ParseFuncOrArgument} - */ -Parser.prototype.parseOptionalGroup = function() { - // Try to parse an open bracket - if (this.nextToken.text === "[") { - // If we get a brace, parse an expression - this.consume(); - var expression = this.parseExpression(false, "]"); - // Make sure we get a close bracket - this.expect("]"); - return new ParseFuncOrArgument( - new ParseNode("ordgroup", expression, this.mode), - false); - } else { - // Otherwise, return null, - return null; - } -}; - -/** - * Parse a single symbol out of the string. Here, we handle both the functions - * we have defined, as well as the single character symbols - * - * @return {?ParseFuncOrArgument} - */ -Parser.prototype.parseSymbol = function() { - var nucleus = this.nextToken; - - if (functions[nucleus.text]) { - this.consume(); - // If there exists a function with this name, we return the function and - // say that it is a function. - return new ParseFuncOrArgument( - nucleus.text, - true); - } else if (symbols[this.mode][nucleus.text]) { - this.consume(); - // Otherwise if this is a no-argument function, find the type it - // corresponds to in the symbols map - return new ParseFuncOrArgument( - new ParseNode(symbols[this.mode][nucleus.text].group, - nucleus.text, this.mode), - false); - } else { - return null; - } -}; - -Parser.prototype.ParseNode = ParseNode; - -module.exports = Parser; diff --git a/webapp/non_npm_dependencies/katex/src/Settings.js b/webapp/non_npm_dependencies/katex/src/Settings.js deleted file mode 100644 index 644014504..000000000 --- a/webapp/non_npm_dependencies/katex/src/Settings.js +++ /dev/null @@ -1,28 +0,0 @@ -/** - * This is a module for storing settings passed into KaTeX. It correctly handles - * default settings. - */ - -/** - * Helper function for getting a default value if the value is undefined - */ -function get(option, defaultValue) { - return option === undefined ? defaultValue : option; -} - -/** - * The main Settings object - * - * The current options stored are: - * - displayMode: Whether the expression should be typeset by default in - * textstyle or displaystyle (default false) - */ -function Settings(options) { - // allow null options - options = options || {}; - this.displayMode = get(options.displayMode, false); - this.throwOnError = get(options.throwOnError, true); - this.errorColor = get(options.errorColor, "#cc0000"); -} - -module.exports = Settings; diff --git a/webapp/non_npm_dependencies/katex/src/Style.js b/webapp/non_npm_dependencies/katex/src/Style.js deleted file mode 100644 index 10e5ef2cc..000000000 --- a/webapp/non_npm_dependencies/katex/src/Style.js +++ /dev/null @@ -1,126 +0,0 @@ -/** - * This file contains information and classes for the various kinds of styles - * used in TeX. It provides a generic `Style` class, which holds information - * about a specific style. It then provides instances of all the different kinds - * of styles possible, and provides functions to move between them and get - * information about them. - */ - -/** - * The main style class. Contains a unique id for the style, a size (which is - * the same for cramped and uncramped version of a style), a cramped flag, and a - * size multiplier, which gives the size difference between a style and - * textstyle. - */ -function Style(id, size, multiplier, cramped) { - this.id = id; - this.size = size; - this.cramped = cramped; - this.sizeMultiplier = multiplier; -} - -/** - * Get the style of a superscript given a base in the current style. - */ -Style.prototype.sup = function() { - return styles[sup[this.id]]; -}; - -/** - * Get the style of a subscript given a base in the current style. - */ -Style.prototype.sub = function() { - return styles[sub[this.id]]; -}; - -/** - * Get the style of a fraction numerator given the fraction in the current - * style. - */ -Style.prototype.fracNum = function() { - return styles[fracNum[this.id]]; -}; - -/** - * Get the style of a fraction denominator given the fraction in the current - * style. - */ -Style.prototype.fracDen = function() { - return styles[fracDen[this.id]]; -}; - -/** - * Get the cramped version of a style (in particular, cramping a cramped style - * doesn't change the style). - */ -Style.prototype.cramp = function() { - return styles[cramp[this.id]]; -}; - -/** - * HTML class name, like "displaystyle cramped" - */ -Style.prototype.cls = function() { - return sizeNames[this.size] + (this.cramped ? " cramped" : " uncramped"); -}; - -/** - * HTML Reset class name, like "reset-textstyle" - */ -Style.prototype.reset = function() { - return resetNames[this.size]; -}; - -// IDs of the different styles -var D = 0; -var Dc = 1; -var T = 2; -var Tc = 3; -var S = 4; -var Sc = 5; -var SS = 6; -var SSc = 7; - -// String names for the different sizes -var sizeNames = [ - "displaystyle textstyle", - "textstyle", - "scriptstyle", - "scriptscriptstyle", -]; - -// Reset names for the different sizes -var resetNames = [ - "reset-textstyle", - "reset-textstyle", - "reset-scriptstyle", - "reset-scriptscriptstyle", -]; - -// Instances of the different styles -var styles = [ - new Style(D, 0, 1.0, false), - new Style(Dc, 0, 1.0, true), - new Style(T, 1, 1.0, false), - new Style(Tc, 1, 1.0, true), - new Style(S, 2, 0.7, false), - new Style(Sc, 2, 0.7, true), - new Style(SS, 3, 0.5, false), - new Style(SSc, 3, 0.5, true), -]; - -// Lookup tables for switching from one style to another -var sup = [S, Sc, S, Sc, SS, SSc, SS, SSc]; -var sub = [Sc, Sc, Sc, Sc, SSc, SSc, SSc, SSc]; -var fracNum = [T, Tc, S, Sc, SS, SSc, SS, SSc]; -var fracDen = [Tc, Tc, Sc, Sc, SSc, SSc, SSc, SSc]; -var cramp = [Dc, Dc, Tc, Tc, Sc, Sc, SSc, SSc]; - -// We only export some of the styles. Also, we don't export the `Style` class so -// no more styles can be generated. -module.exports = { - DISPLAY: styles[D], - TEXT: styles[T], - SCRIPT: styles[S], - SCRIPTSCRIPT: styles[SS], -}; diff --git a/webapp/non_npm_dependencies/katex/src/buildCommon.js b/webapp/non_npm_dependencies/katex/src/buildCommon.js deleted file mode 100644 index b60e1860a..000000000 --- a/webapp/non_npm_dependencies/katex/src/buildCommon.js +++ /dev/null @@ -1,450 +0,0 @@ -/* eslint no-console:0 */ -/** - * This module contains general functions that can be used for building - * different kinds of domTree nodes in a consistent manner. - */ - -var domTree = require("./domTree"); -var fontMetrics = require("./fontMetrics"); -var symbols = require("./symbols"); -var utils = require("./utils"); - -var greekCapitals = [ - "\\Gamma", - "\\Delta", - "\\Theta", - "\\Lambda", - "\\Xi", - "\\Pi", - "\\Sigma", - "\\Upsilon", - "\\Phi", - "\\Psi", - "\\Omega", -]; - -var dotlessLetters = [ - "\u0131", // dotless i, \imath - "\u0237", // dotless j, \jmath -]; - -/** - * Makes a symbolNode after translation via the list of symbols in symbols.js. - * Correctly pulls out metrics for the character, and optionally takes a list of - * classes to be attached to the node. - */ -var makeSymbol = function(value, style, mode, color, classes) { - // Replace the value with its replaced value from symbol.js - if (symbols[mode][value] && symbols[mode][value].replace) { - value = symbols[mode][value].replace; - } - - var metrics = fontMetrics.getCharacterMetrics(value, style); - - var symbolNode; - if (metrics) { - symbolNode = new domTree.symbolNode( - value, metrics.height, metrics.depth, metrics.italic, metrics.skew, - classes); - } else { - // TODO(emily): Figure out a good way to only print this in development - typeof console !== "undefined" && console.warn( - "No character metrics for '" + value + "' in style '" + - style + "'"); - symbolNode = new domTree.symbolNode(value, 0, 0, 0, 0, classes); - } - - if (color) { - symbolNode.style.color = color; - } - - return symbolNode; -}; - -/** - * Makes a symbol in Main-Regular or AMS-Regular. - * Used for rel, bin, open, close, inner, and punct. - */ -var mathsym = function(value, mode, color, classes) { - // Decide what font to render the symbol in by its entry in the symbols - // table. - // Have a special case for when the value = \ because the \ is used as a - // textord in unsupported command errors but cannot be parsed as a regular - // text ordinal and is therefore not present as a symbol in the symbols - // table for text - if (value === "\\" || symbols[mode][value].font === "main") { - return makeSymbol(value, "Main-Regular", mode, color, classes); - } else { - return makeSymbol( - value, "AMS-Regular", mode, color, classes.concat(["amsrm"])); - } -}; - -/** - * Makes a symbol in the default font for mathords and textords. - */ -var mathDefault = function(value, mode, color, classes, type) { - if (type === "mathord") { - return mathit(value, mode, color, classes); - } else if (type === "textord") { - return makeSymbol( - value, "Main-Regular", mode, color, classes.concat(["mathrm"])); - } else { - throw new Error("unexpected type: " + type + " in mathDefault"); - } -}; - -/** - * Makes a symbol in the italic math font. - */ -var mathit = function(value, mode, color, classes) { - if (/[0-9]/.test(value.charAt(0)) || - // glyphs for \imath and \jmath do not exist in Math-Italic so we - // need to use Main-Italic instead - utils.contains(dotlessLetters, value) || - utils.contains(greekCapitals, value)) { - return makeSymbol( - value, "Main-Italic", mode, color, classes.concat(["mainit"])); - } else { - return makeSymbol( - value, "Math-Italic", mode, color, classes.concat(["mathit"])); - } -}; - -/** - * Makes either a mathord or textord in the correct font and color. - */ -var makeOrd = function(group, options, type) { - var mode = group.mode; - var value = group.value; - if (symbols[mode][value] && symbols[mode][value].replace) { - value = symbols[mode][value].replace; - } - - var classes = ["mord"]; - var color = options.getColor(); - - var font = options.font; - if (font) { - if (font === "mathit" || utils.contains(dotlessLetters, value)) { - return mathit(value, mode, color, classes); - } else { - var fontName = fontMap[font].fontName; - if (fontMetrics.getCharacterMetrics(value, fontName)) { - return makeSymbol( - value, fontName, mode, color, classes.concat([font])); - } else { - return mathDefault(value, mode, color, classes, type); - } - } - } else { - return mathDefault(value, mode, color, classes, type); - } -}; - -/** - * Calculate the height, depth, and maxFontSize of an element based on its - * children. - */ -var sizeElementFromChildren = function(elem) { - var height = 0; - var depth = 0; - var maxFontSize = 0; - - if (elem.children) { - for (var i = 0; i < elem.children.length; i++) { - if (elem.children[i].height > height) { - height = elem.children[i].height; - } - if (elem.children[i].depth > depth) { - depth = elem.children[i].depth; - } - if (elem.children[i].maxFontSize > maxFontSize) { - maxFontSize = elem.children[i].maxFontSize; - } - } - } - - elem.height = height; - elem.depth = depth; - elem.maxFontSize = maxFontSize; -}; - -/** - * Makes a span with the given list of classes, list of children, and color. - */ -var makeSpan = function(classes, children, color) { - var span = new domTree.span(classes, children); - - sizeElementFromChildren(span); - - if (color) { - span.style.color = color; - } - - return span; -}; - -/** - * Makes a document fragment with the given list of children. - */ -var makeFragment = function(children) { - var fragment = new domTree.documentFragment(children); - - sizeElementFromChildren(fragment); - - return fragment; -}; - -/** - * Makes an element placed in each of the vlist elements to ensure that each - * element has the same max font size. To do this, we create a zero-width space - * with the correct font size. - */ -var makeFontSizer = function(options, fontSize) { - var fontSizeInner = makeSpan([], [new domTree.symbolNode("\u200b")]); - fontSizeInner.style.fontSize = - (fontSize / options.style.sizeMultiplier) + "em"; - - var fontSizer = makeSpan( - ["fontsize-ensurer", "reset-" + options.size, "size5"], - [fontSizeInner]); - - return fontSizer; -}; - -/** - * Makes a vertical list by stacking elements and kerns on top of each other. - * Allows for many different ways of specifying the positioning method. - * - * Arguments: - * - children: A list of child or kern nodes to be stacked on top of each other - * (i.e. the first element will be at the bottom, and the last at - * the top). Element nodes are specified as - * {type: "elem", elem: node} - * while kern nodes are specified as - * {type: "kern", size: size} - * - positionType: The method by which the vlist should be positioned. Valid - * values are: - * - "individualShift": The children list only contains elem - * nodes, and each node contains an extra - * "shift" value of how much it should be - * shifted (note that shifting is always - * moving downwards). positionData is - * ignored. - * - "top": The positionData specifies the topmost point of - * the vlist (note this is expected to be a height, - * so positive values move up) - * - "bottom": The positionData specifies the bottommost point - * of the vlist (note this is expected to be a - * depth, so positive values move down - * - "shift": The vlist will be positioned such that its - * baseline is positionData away from the baseline - * of the first child. Positive values move - * downwards. - * - "firstBaseline": The vlist will be positioned such that - * its baseline is aligned with the - * baseline of the first child. - * positionData is ignored. (this is - * equivalent to "shift" with - * positionData=0) - * - positionData: Data used in different ways depending on positionType - * - options: An Options object - * - */ -var makeVList = function(children, positionType, positionData, options) { - var depth; - var currPos; - var i; - if (positionType === "individualShift") { - var oldChildren = children; - children = [oldChildren[0]]; - - // Add in kerns to the list of children to get each element to be - // shifted to the correct specified shift - depth = -oldChildren[0].shift - oldChildren[0].elem.depth; - currPos = depth; - for (i = 1; i < oldChildren.length; i++) { - var diff = -oldChildren[i].shift - currPos - - oldChildren[i].elem.depth; - var size = diff - - (oldChildren[i - 1].elem.height + - oldChildren[i - 1].elem.depth); - - currPos = currPos + diff; - - children.push({type: "kern", size: size}); - children.push(oldChildren[i]); - } - } else if (positionType === "top") { - // We always start at the bottom, so calculate the bottom by adding up - // all the sizes - var bottom = positionData; - for (i = 0; i < children.length; i++) { - if (children[i].type === "kern") { - bottom -= children[i].size; - } else { - bottom -= children[i].elem.height + children[i].elem.depth; - } - } - depth = bottom; - } else if (positionType === "bottom") { - depth = -positionData; - } else if (positionType === "shift") { - depth = -children[0].elem.depth - positionData; - } else if (positionType === "firstBaseline") { - depth = -children[0].elem.depth; - } else { - depth = 0; - } - - // Make the fontSizer - var maxFontSize = 0; - for (i = 0; i < children.length; i++) { - if (children[i].type === "elem") { - maxFontSize = Math.max(maxFontSize, children[i].elem.maxFontSize); - } - } - var fontSizer = makeFontSizer(options, maxFontSize); - - // Create a new list of actual children at the correct offsets - var realChildren = []; - currPos = depth; - for (i = 0; i < children.length; i++) { - if (children[i].type === "kern") { - currPos += children[i].size; - } else { - var child = children[i].elem; - - var shift = -child.depth - currPos; - currPos += child.height + child.depth; - - var childWrap = makeSpan([], [fontSizer, child]); - childWrap.height -= shift; - childWrap.depth += shift; - childWrap.style.top = shift + "em"; - - realChildren.push(childWrap); - } - } - - // Add in an element at the end with no offset to fix the calculation of - // baselines in some browsers (namely IE, sometimes safari) - var baselineFix = makeSpan( - ["baseline-fix"], [fontSizer, new domTree.symbolNode("\u200b")]); - realChildren.push(baselineFix); - - var vlist = makeSpan(["vlist"], realChildren); - // Fix the final height and depth, in case there were kerns at the ends - // since the makeSpan calculation won't take that in to account. - vlist.height = Math.max(currPos, vlist.height); - vlist.depth = Math.max(-depth, vlist.depth); - return vlist; -}; - -// A table of size -> font size for the different sizing functions -var sizingMultiplier = { - size1: 0.5, - size2: 0.7, - size3: 0.8, - size4: 0.9, - size5: 1.0, - size6: 1.2, - size7: 1.44, - size8: 1.73, - size9: 2.07, - size10: 2.49, -}; - -// A map of spacing functions to their attributes, like size and corresponding -// CSS class -var spacingFunctions = { - "\\qquad": { - size: "2em", - className: "qquad", - }, - "\\quad": { - size: "1em", - className: "quad", - }, - "\\enspace": { - size: "0.5em", - className: "enspace", - }, - "\\;": { - size: "0.277778em", - className: "thickspace", - }, - "\\:": { - size: "0.22222em", - className: "mediumspace", - }, - "\\,": { - size: "0.16667em", - className: "thinspace", - }, - "\\!": { - size: "-0.16667em", - className: "negativethinspace", - }, -}; - -/** - * Maps TeX font commands to objects containing: - * - variant: string used for "mathvariant" attribute in buildMathML.js - * - fontName: the "style" parameter to fontMetrics.getCharacterMetrics - */ -// A map between tex font commands an MathML mathvariant attribute values -var fontMap = { - // styles - "mathbf": { - variant: "bold", - fontName: "Main-Bold", - }, - "mathrm": { - variant: "normal", - fontName: "Main-Regular", - }, - - // "mathit" is missing because it requires the use of two fonts: Main-Italic - // and Math-Italic. This is handled by a special case in makeOrd which ends - // up calling mathit. - - // families - "mathbb": { - variant: "double-struck", - fontName: "AMS-Regular", - }, - "mathcal": { - variant: "script", - fontName: "Caligraphic-Regular", - }, - "mathfrak": { - variant: "fraktur", - fontName: "Fraktur-Regular", - }, - "mathscr": { - variant: "script", - fontName: "Script-Regular", - }, - "mathsf": { - variant: "sans-serif", - fontName: "SansSerif-Regular", - }, - "mathtt": { - variant: "monospace", - fontName: "Typewriter-Regular", - }, -}; - -module.exports = { - fontMap: fontMap, - makeSymbol: makeSymbol, - mathsym: mathsym, - makeSpan: makeSpan, - makeFragment: makeFragment, - makeVList: makeVList, - makeOrd: makeOrd, - sizingMultiplier: sizingMultiplier, - spacingFunctions: spacingFunctions, -}; diff --git a/webapp/non_npm_dependencies/katex/src/buildHTML.js b/webapp/non_npm_dependencies/katex/src/buildHTML.js deleted file mode 100644 index dbd33a3fc..000000000 --- a/webapp/non_npm_dependencies/katex/src/buildHTML.js +++ /dev/null @@ -1,1375 +0,0 @@ -/* eslint no-console:0 */ -/** - * This file does the main work of building a domTree structure from a parse - * tree. The entry point is the `buildHTML` function, which takes a parse tree. - * Then, the buildExpression, buildGroup, and various groupTypes functions are - * called, to produce a final HTML tree. - */ - -var ParseError = require("./ParseError"); -var Style = require("./Style"); - -var buildCommon = require("./buildCommon"); -var delimiter = require("./delimiter"); -var domTree = require("./domTree"); -var fontMetrics = require("./fontMetrics"); -var utils = require("./utils"); - -var makeSpan = buildCommon.makeSpan; - -/** - * Take a list of nodes, build them in order, and return a list of the built - * nodes. This function handles the `prev` node correctly, and passes the - * previous element from the list as the prev of the next element. - */ -var buildExpression = function(expression, options, prev) { - var groups = []; - for (var i = 0; i < expression.length; i++) { - var group = expression[i]; - groups.push(buildGroup(group, options, prev)); - prev = group; - } - return groups; -}; - -// List of types used by getTypeOfGroup, -// see https://github.com/Khan/KaTeX/wiki/Examining-TeX#group-types -var groupToType = { - mathord: "mord", - textord: "mord", - bin: "mbin", - rel: "mrel", - text: "mord", - open: "mopen", - close: "mclose", - inner: "minner", - genfrac: "mord", - array: "mord", - spacing: "mord", - punct: "mpunct", - ordgroup: "mord", - op: "mop", - katex: "mord", - overline: "mord", - rule: "mord", - leftright: "minner", - sqrt: "mord", - accent: "mord", -}; - -/** - * Gets the final math type of an expression, given its group type. This type is - * used to determine spacing between elements, and affects bin elements by - * causing them to change depending on what types are around them. This type - * must be attached to the outermost node of an element as a CSS class so that - * spacing with its surrounding elements works correctly. - * - * Some elements can be mapped one-to-one from group type to math type, and - * those are listed in the `groupToType` table. - * - * Others (usually elements that wrap around other elements) often have - * recursive definitions, and thus call `getTypeOfGroup` on their inner - * elements. - */ -var getTypeOfGroup = function(group) { - if (group == null) { - // Like when typesetting $^3$ - return groupToType.mathord; - } else if (group.type === "supsub") { - return getTypeOfGroup(group.value.base); - } else if (group.type === "llap" || group.type === "rlap") { - return getTypeOfGroup(group.value); - } else if (group.type === "color") { - return getTypeOfGroup(group.value.value); - } else if (group.type === "sizing") { - return getTypeOfGroup(group.value.value); - } else if (group.type === "styling") { - return getTypeOfGroup(group.value.value); - } else if (group.type === "delimsizing") { - return groupToType[group.value.delimType]; - } else { - return groupToType[group.type]; - } -}; - -/** - * Sometimes, groups perform special rules when they have superscripts or - * subscripts attached to them. This function lets the `supsub` group know that - * its inner element should handle the superscripts and subscripts instead of - * handling them itself. - */ -var shouldHandleSupSub = function(group, options) { - if (!group) { - return false; - } else if (group.type === "op") { - // Operators handle supsubs differently when they have limits - // (e.g. `\displaystyle\sum_2^3`) - return group.value.limits && - (options.style.size === Style.DISPLAY.size || - group.value.alwaysHandleSupSub); - } else if (group.type === "accent") { - return isCharacterBox(group.value.base); - } else { - return null; - } -}; - -/** - * Sometimes we want to pull out the innermost element of a group. In most - * cases, this will just be the group itself, but when ordgroups and colors have - * a single element, we want to pull that out. - */ -var getBaseElem = function(group) { - if (!group) { - return false; - } else if (group.type === "ordgroup") { - if (group.value.length === 1) { - return getBaseElem(group.value[0]); - } else { - return group; - } - } else if (group.type === "color") { - if (group.value.value.length === 1) { - return getBaseElem(group.value.value[0]); - } else { - return group; - } - } else { - return group; - } -}; - -/** - * TeXbook algorithms often reference "character boxes", which are simply groups - * with a single character in them. To decide if something is a character box, - * we find its innermost group, and see if it is a single character. - */ -var isCharacterBox = function(group) { - var baseElem = getBaseElem(group); - - // These are all they types of groups which hold single characters - return baseElem.type === "mathord" || - baseElem.type === "textord" || - baseElem.type === "bin" || - baseElem.type === "rel" || - baseElem.type === "inner" || - baseElem.type === "open" || - baseElem.type === "close" || - baseElem.type === "punct"; -}; - -var makeNullDelimiter = function(options) { - return makeSpan([ - "sizing", "reset-" + options.size, "size5", - options.style.reset(), Style.TEXT.cls(), - "nulldelimiter", - ]); -}; - -/** - * This is a map of group types to the function used to handle that type. - * Simpler types come at the beginning, while complicated types come afterwards. - */ -var groupTypes = {}; - -groupTypes.mathord = function(group, options, prev) { - return buildCommon.makeOrd(group, options, "mathord"); -}; - -groupTypes.textord = function(group, options, prev) { - return buildCommon.makeOrd(group, options, "textord"); -}; - -groupTypes.bin = function(group, options, prev) { - var className = "mbin"; - // Pull out the most recent element. Do some special handling to find - // things at the end of a \color group. Note that we don't use the same - // logic for ordgroups (which count as ords). - var prevAtom = prev; - while (prevAtom && prevAtom.type === "color") { - var atoms = prevAtom.value.value; - prevAtom = atoms[atoms.length - 1]; - } - // See TeXbook pg. 442-446, Rules 5 and 6, and the text before Rule 19. - // Here, we determine whether the bin should turn into an ord. We - // currently only apply Rule 5. - if (!prev || utils.contains(["mbin", "mopen", "mrel", "mop", "mpunct"], - getTypeOfGroup(prevAtom))) { - group.type = "textord"; - className = "mord"; - } - - return buildCommon.mathsym( - group.value, group.mode, options.getColor(), [className]); -}; - -groupTypes.rel = function(group, options, prev) { - return buildCommon.mathsym( - group.value, group.mode, options.getColor(), ["mrel"]); -}; - -groupTypes.open = function(group, options, prev) { - return buildCommon.mathsym( - group.value, group.mode, options.getColor(), ["mopen"]); -}; - -groupTypes.close = function(group, options, prev) { - return buildCommon.mathsym( - group.value, group.mode, options.getColor(), ["mclose"]); -}; - -groupTypes.inner = function(group, options, prev) { - return buildCommon.mathsym( - group.value, group.mode, options.getColor(), ["minner"]); -}; - -groupTypes.punct = function(group, options, prev) { - return buildCommon.mathsym( - group.value, group.mode, options.getColor(), ["mpunct"]); -}; - -groupTypes.ordgroup = function(group, options, prev) { - return makeSpan( - ["mord", options.style.cls()], - buildExpression(group.value, options.reset()) - ); -}; - -groupTypes.text = function(group, options, prev) { - return makeSpan(["text", "mord", options.style.cls()], - buildExpression(group.value.body, options.reset())); -}; - -groupTypes.color = function(group, options, prev) { - var elements = buildExpression( - group.value.value, - options.withColor(group.value.color), - prev - ); - - // \color isn't supposed to affect the type of the elements it contains. - // To accomplish this, we wrap the results in a fragment, so the inner - // elements will be able to directly interact with their neighbors. For - // example, `\color{red}{2 +} 3` has the same spacing as `2 + 3` - return new buildCommon.makeFragment(elements); -}; - -groupTypes.supsub = function(group, options, prev) { - // Superscript and subscripts are handled in the TeXbook on page - // 445-446, rules 18(a-f). - - // Here is where we defer to the inner group if it should handle - // superscripts and subscripts itself. - if (shouldHandleSupSub(group.value.base, options)) { - return groupTypes[group.value.base.type](group, options, prev); - } - - var base = buildGroup(group.value.base, options.reset()); - var supmid; - var submid; - var sup; - var sub; - - if (group.value.sup) { - sup = buildGroup(group.value.sup, - options.withStyle(options.style.sup())); - supmid = makeSpan( - [options.style.reset(), options.style.sup().cls()], [sup]); - } - - if (group.value.sub) { - sub = buildGroup(group.value.sub, - options.withStyle(options.style.sub())); - submid = makeSpan( - [options.style.reset(), options.style.sub().cls()], [sub]); - } - - // Rule 18a - var supShift; - var subShift; - if (isCharacterBox(group.value.base)) { - supShift = 0; - subShift = 0; - } else { - supShift = base.height - fontMetrics.metrics.supDrop; - subShift = base.depth + fontMetrics.metrics.subDrop; - } - - // Rule 18c - var minSupShift; - if (options.style === Style.DISPLAY) { - minSupShift = fontMetrics.metrics.sup1; - } else if (options.style.cramped) { - minSupShift = fontMetrics.metrics.sup3; - } else { - minSupShift = fontMetrics.metrics.sup2; - } - - // scriptspace is a font-size-independent size, so scale it - // appropriately - var multiplier = Style.TEXT.sizeMultiplier * - options.style.sizeMultiplier; - var scriptspace = - (0.5 / fontMetrics.metrics.ptPerEm) / multiplier + "em"; - - var supsub; - if (!group.value.sup) { - // Rule 18b - subShift = Math.max( - subShift, fontMetrics.metrics.sub1, - sub.height - 0.8 * fontMetrics.metrics.xHeight); - - supsub = buildCommon.makeVList([ - {type: "elem", elem: submid}, - ], "shift", subShift, options); - - supsub.children[0].style.marginRight = scriptspace; - - // Subscripts shouldn't be shifted by the base's italic correction. - // Account for that by shifting the subscript back the appropriate - // amount. Note we only do this when the base is a single symbol. - if (base instanceof domTree.symbolNode) { - supsub.children[0].style.marginLeft = -base.italic + "em"; - } - } else if (!group.value.sub) { - // Rule 18c, d - supShift = Math.max(supShift, minSupShift, - sup.depth + 0.25 * fontMetrics.metrics.xHeight); - - supsub = buildCommon.makeVList([ - {type: "elem", elem: supmid}, - ], "shift", -supShift, options); - - supsub.children[0].style.marginRight = scriptspace; - } else { - supShift = Math.max( - supShift, minSupShift, - sup.depth + 0.25 * fontMetrics.metrics.xHeight); - subShift = Math.max(subShift, fontMetrics.metrics.sub2); - - var ruleWidth = fontMetrics.metrics.defaultRuleThickness; - - // Rule 18e - if ((supShift - sup.depth) - (sub.height - subShift) < - 4 * ruleWidth) { - subShift = 4 * ruleWidth - (supShift - sup.depth) + sub.height; - var psi = 0.8 * fontMetrics.metrics.xHeight - - (supShift - sup.depth); - if (psi > 0) { - supShift += psi; - subShift -= psi; - } - } - - supsub = buildCommon.makeVList([ - {type: "elem", elem: submid, shift: subShift}, - {type: "elem", elem: supmid, shift: -supShift}, - ], "individualShift", null, options); - - // See comment above about subscripts not being shifted - if (base instanceof domTree.symbolNode) { - supsub.children[0].style.marginLeft = -base.italic + "em"; - } - - supsub.children[0].style.marginRight = scriptspace; - supsub.children[1].style.marginRight = scriptspace; - } - - return makeSpan([getTypeOfGroup(group.value.base)], - [base, supsub]); -}; - -groupTypes.genfrac = function(group, options, prev) { - // Fractions are handled in the TeXbook on pages 444-445, rules 15(a-e). - // Figure out what style this fraction should be in based on the - // function used - var fstyle = options.style; - if (group.value.size === "display") { - fstyle = Style.DISPLAY; - } else if (group.value.size === "text") { - fstyle = Style.TEXT; - } - - var nstyle = fstyle.fracNum(); - var dstyle = fstyle.fracDen(); - - var numer = buildGroup(group.value.numer, options.withStyle(nstyle)); - var numerreset = makeSpan([fstyle.reset(), nstyle.cls()], [numer]); - - var denom = buildGroup(group.value.denom, options.withStyle(dstyle)); - var denomreset = makeSpan([fstyle.reset(), dstyle.cls()], [denom]); - - var ruleWidth; - if (group.value.hasBarLine) { - ruleWidth = fontMetrics.metrics.defaultRuleThickness / - options.style.sizeMultiplier; - } else { - ruleWidth = 0; - } - - // Rule 15b - var numShift; - var clearance; - var denomShift; - if (fstyle.size === Style.DISPLAY.size) { - numShift = fontMetrics.metrics.num1; - if (ruleWidth > 0) { - clearance = 3 * ruleWidth; - } else { - clearance = 7 * fontMetrics.metrics.defaultRuleThickness; - } - denomShift = fontMetrics.metrics.denom1; - } else { - if (ruleWidth > 0) { - numShift = fontMetrics.metrics.num2; - clearance = ruleWidth; - } else { - numShift = fontMetrics.metrics.num3; - clearance = 3 * fontMetrics.metrics.defaultRuleThickness; - } - denomShift = fontMetrics.metrics.denom2; - } - - var frac; - if (ruleWidth === 0) { - // Rule 15c - var candiateClearance = - (numShift - numer.depth) - (denom.height - denomShift); - if (candiateClearance < clearance) { - numShift += 0.5 * (clearance - candiateClearance); - denomShift += 0.5 * (clearance - candiateClearance); - } - - frac = buildCommon.makeVList([ - {type: "elem", elem: denomreset, shift: denomShift}, - {type: "elem", elem: numerreset, shift: -numShift}, - ], "individualShift", null, options); - } else { - // Rule 15d - var axisHeight = fontMetrics.metrics.axisHeight; - - if ((numShift - numer.depth) - (axisHeight + 0.5 * ruleWidth) < - clearance) { - numShift += - clearance - ((numShift - numer.depth) - - (axisHeight + 0.5 * ruleWidth)); - } - - if ((axisHeight - 0.5 * ruleWidth) - (denom.height - denomShift) < - clearance) { - denomShift += - clearance - ((axisHeight - 0.5 * ruleWidth) - - (denom.height - denomShift)); - } - - var mid = makeSpan( - [options.style.reset(), Style.TEXT.cls(), "frac-line"]); - // Manually set the height of the line because its height is - // created in CSS - mid.height = ruleWidth; - - var midShift = -(axisHeight - 0.5 * ruleWidth); - - frac = buildCommon.makeVList([ - {type: "elem", elem: denomreset, shift: denomShift}, - {type: "elem", elem: mid, shift: midShift}, - {type: "elem", elem: numerreset, shift: -numShift}, - ], "individualShift", null, options); - } - - // Since we manually change the style sometimes (with \dfrac or \tfrac), - // account for the possible size change here. - frac.height *= fstyle.sizeMultiplier / options.style.sizeMultiplier; - frac.depth *= fstyle.sizeMultiplier / options.style.sizeMultiplier; - - // Rule 15e - var delimSize; - if (fstyle.size === Style.DISPLAY.size) { - delimSize = fontMetrics.metrics.delim1; - } else { - delimSize = fontMetrics.metrics.getDelim2(fstyle); - } - - var leftDelim; - var rightDelim; - if (group.value.leftDelim == null) { - leftDelim = makeNullDelimiter(options); - } else { - leftDelim = delimiter.customSizedDelim( - group.value.leftDelim, delimSize, true, - options.withStyle(fstyle), group.mode); - } - if (group.value.rightDelim == null) { - rightDelim = makeNullDelimiter(options); - } else { - rightDelim = delimiter.customSizedDelim( - group.value.rightDelim, delimSize, true, - options.withStyle(fstyle), group.mode); - } - - return makeSpan( - ["mord", options.style.reset(), fstyle.cls()], - [leftDelim, makeSpan(["mfrac"], [frac]), rightDelim], - options.getColor()); -}; - -groupTypes.array = function(group, options, prev) { - var r; - var c; - var nr = group.value.body.length; - var nc = 0; - var body = new Array(nr); - - // Horizontal spacing - var pt = 1 / fontMetrics.metrics.ptPerEm; - var arraycolsep = 5 * pt; // \arraycolsep in article.cls - - // Vertical spacing - var baselineskip = 12 * pt; // see size10.clo - // Default \arraystretch from lttab.dtx - // TODO(gagern): may get redefined once we have user-defined macros - var arraystretch = utils.deflt(group.value.arraystretch, 1); - var arrayskip = arraystretch * baselineskip; - var arstrutHeight = 0.7 * arrayskip; // \strutbox in ltfsstrc.dtx and - var arstrutDepth = 0.3 * arrayskip; // \@arstrutbox in lttab.dtx - - var totalHeight = 0; - for (r = 0; r < group.value.body.length; ++r) { - var inrow = group.value.body[r]; - var height = arstrutHeight; // \@array adds an \@arstrut - var depth = arstrutDepth; // to each tow (via the template) - - if (nc < inrow.length) { - nc = inrow.length; - } - - var outrow = new Array(inrow.length); - for (c = 0; c < inrow.length; ++c) { - var elt = buildGroup(inrow[c], options); - if (depth < elt.depth) { - depth = elt.depth; - } - if (height < elt.height) { - height = elt.height; - } - outrow[c] = elt; - } - - var gap = 0; - if (group.value.rowGaps[r]) { - gap = group.value.rowGaps[r].value; - switch (gap.unit) { - case "em": - gap = gap.number; - break; - case "ex": - gap = gap.number * fontMetrics.metrics.emPerEx; - break; - default: - console.error("Can't handle unit " + gap.unit); - gap = 0; - } - if (gap > 0) { // \@argarraycr - gap += arstrutDepth; - if (depth < gap) { - depth = gap; // \@xargarraycr - } - gap = 0; - } - } - - outrow.height = height; - outrow.depth = depth; - totalHeight += height; - outrow.pos = totalHeight; - totalHeight += depth + gap; // \@yargarraycr - body[r] = outrow; - } - - var offset = totalHeight / 2 + fontMetrics.metrics.axisHeight; - var colDescriptions = group.value.cols || []; - var cols = []; - var colSep; - var colDescrNum; - for (c = 0, colDescrNum = 0; - // Continue while either there are more columns or more column - // descriptions, so trailing separators don't get lost. - c < nc || colDescrNum < colDescriptions.length; - ++c, ++colDescrNum) { - - var colDescr = colDescriptions[colDescrNum] || {}; - - var firstSeparator = true; - while (colDescr.type === "separator") { - // If there is more than one separator in a row, add a space - // between them. - if (!firstSeparator) { - colSep = makeSpan(["arraycolsep"], []); - colSep.style.width = - fontMetrics.metrics.doubleRuleSep + "em"; - cols.push(colSep); - } - - if (colDescr.separator === "|") { - var separator = makeSpan( - ["vertical-separator"], - []); - separator.style.height = totalHeight + "em"; - separator.style.verticalAlign = - -(totalHeight - offset) + "em"; - - cols.push(separator); - } else { - throw new ParseError( - "Invalid separator type: " + colDescr.separator); - } - - colDescrNum++; - colDescr = colDescriptions[colDescrNum] || {}; - firstSeparator = false; - } - - if (c >= nc) { - continue; - } - - var sepwidth; - if (c > 0 || group.value.hskipBeforeAndAfter) { - sepwidth = utils.deflt(colDescr.pregap, arraycolsep); - if (sepwidth !== 0) { - colSep = makeSpan(["arraycolsep"], []); - colSep.style.width = sepwidth + "em"; - cols.push(colSep); - } - } - - var col = []; - for (r = 0; r < nr; ++r) { - var row = body[r]; - var elem = row[c]; - if (!elem) { - continue; - } - var shift = row.pos - offset; - elem.depth = row.depth; - elem.height = row.height; - col.push({type: "elem", elem: elem, shift: shift}); - } - - col = buildCommon.makeVList(col, "individualShift", null, options); - col = makeSpan( - ["col-align-" + (colDescr.align || "c")], - [col]); - cols.push(col); - - if (c < nc - 1 || group.value.hskipBeforeAndAfter) { - sepwidth = utils.deflt(colDescr.postgap, arraycolsep); - if (sepwidth !== 0) { - colSep = makeSpan(["arraycolsep"], []); - colSep.style.width = sepwidth + "em"; - cols.push(colSep); - } - } - } - body = makeSpan(["mtable"], cols); - return makeSpan(["mord"], [body], options.getColor()); -}; - -groupTypes.spacing = function(group, options, prev) { - if (group.value === "\\ " || group.value === "\\space" || - group.value === " " || group.value === "~") { - // Spaces are generated by adding an actual space. Each of these - // things has an entry in the symbols table, so these will be turned - // into appropriate outputs. - return makeSpan( - ["mord", "mspace"], - [buildCommon.mathsym(group.value, group.mode)] - ); - } else { - // Other kinds of spaces are of arbitrary width. We use CSS to - // generate these. - return makeSpan( - ["mord", "mspace", - buildCommon.spacingFunctions[group.value].className]); - } -}; - -groupTypes.llap = function(group, options, prev) { - var inner = makeSpan( - ["inner"], [buildGroup(group.value.body, options.reset())]); - var fix = makeSpan(["fix"], []); - return makeSpan( - ["llap", options.style.cls()], [inner, fix]); -}; - -groupTypes.rlap = function(group, options, prev) { - var inner = makeSpan( - ["inner"], [buildGroup(group.value.body, options.reset())]); - var fix = makeSpan(["fix"], []); - return makeSpan( - ["rlap", options.style.cls()], [inner, fix]); -}; - -groupTypes.op = function(group, options, prev) { - // Operators are handled in the TeXbook pg. 443-444, rule 13(a). - var supGroup; - var subGroup; - var hasLimits = false; - if (group.type === "supsub" ) { - // If we have limits, supsub will pass us its group to handle. Pull - // out the superscript and subscript and set the group to the op in - // its base. - supGroup = group.value.sup; - subGroup = group.value.sub; - group = group.value.base; - hasLimits = true; - } - - // Most operators have a large successor symbol, but these don't. - var noSuccessor = [ - "\\smallint", - ]; - - var large = false; - if (options.style.size === Style.DISPLAY.size && - group.value.symbol && - !utils.contains(noSuccessor, group.value.body)) { - - // Most symbol operators get larger in displaystyle (rule 13) - large = true; - } - - var base; - var baseShift = 0; - var slant = 0; - if (group.value.symbol) { - // If this is a symbol, create the symbol. - var style = large ? "Size2-Regular" : "Size1-Regular"; - base = buildCommon.makeSymbol( - group.value.body, style, "math", options.getColor(), - ["op-symbol", large ? "large-op" : "small-op", "mop"]); - - // Shift the symbol so its center lies on the axis (rule 13). It - // appears that our fonts have the centers of the symbols already - // almost on the axis, so these numbers are very small. Note we - // don't actually apply this here, but instead it is used either in - // the vlist creation or separately when there are no limits. - baseShift = (base.height - base.depth) / 2 - - fontMetrics.metrics.axisHeight * - options.style.sizeMultiplier; - - // The slant of the symbol is just its italic correction. - slant = base.italic; - } else { - // Otherwise, this is a text operator. Build the text from the - // operator's name. - // TODO(emily): Add a space in the middle of some of these - // operators, like \limsup - var output = []; - for (var i = 1; i < group.value.body.length; i++) { - output.push(buildCommon.mathsym(group.value.body[i], group.mode)); - } - base = makeSpan(["mop"], output, options.getColor()); - } - - if (hasLimits) { - // IE 8 clips \int if it is in a display: inline-block. We wrap it - // in a new span so it is an inline, and works. - base = makeSpan([], [base]); - - var supmid; - var supKern; - var submid; - var subKern; - // We manually have to handle the superscripts and subscripts. This, - // aside from the kern calculations, is copied from supsub. - if (supGroup) { - var sup = buildGroup( - supGroup, options.withStyle(options.style.sup())); - supmid = makeSpan( - [options.style.reset(), options.style.sup().cls()], [sup]); - - supKern = Math.max( - fontMetrics.metrics.bigOpSpacing1, - fontMetrics.metrics.bigOpSpacing3 - sup.depth); - } - - if (subGroup) { - var sub = buildGroup( - subGroup, options.withStyle(options.style.sub())); - submid = makeSpan( - [options.style.reset(), options.style.sub().cls()], - [sub]); - - subKern = Math.max( - fontMetrics.metrics.bigOpSpacing2, - fontMetrics.metrics.bigOpSpacing4 - sub.height); - } - - // Build the final group as a vlist of the possible subscript, base, - // and possible superscript. - var finalGroup; - var top; - var bottom; - if (!supGroup) { - top = base.height - baseShift; - - finalGroup = buildCommon.makeVList([ - {type: "kern", size: fontMetrics.metrics.bigOpSpacing5}, - {type: "elem", elem: submid}, - {type: "kern", size: subKern}, - {type: "elem", elem: base}, - ], "top", top, options); - - // Here, we shift the limits by the slant of the symbol. Note - // that we are supposed to shift the limits by 1/2 of the slant, - // but since we are centering the limits adding a full slant of - // margin will shift by 1/2 that. - finalGroup.children[0].style.marginLeft = -slant + "em"; - } else if (!subGroup) { - bottom = base.depth + baseShift; - - finalGroup = buildCommon.makeVList([ - {type: "elem", elem: base}, - {type: "kern", size: supKern}, - {type: "elem", elem: supmid}, - {type: "kern", size: fontMetrics.metrics.bigOpSpacing5}, - ], "bottom", bottom, options); - - // See comment above about slants - finalGroup.children[1].style.marginLeft = slant + "em"; - } else if (!supGroup && !subGroup) { - // This case probably shouldn't occur (this would mean the - // supsub was sending us a group with no superscript or - // subscript) but be safe. - return base; - } else { - bottom = fontMetrics.metrics.bigOpSpacing5 + - submid.height + submid.depth + - subKern + - base.depth + baseShift; - - finalGroup = buildCommon.makeVList([ - {type: "kern", size: fontMetrics.metrics.bigOpSpacing5}, - {type: "elem", elem: submid}, - {type: "kern", size: subKern}, - {type: "elem", elem: base}, - {type: "kern", size: supKern}, - {type: "elem", elem: supmid}, - {type: "kern", size: fontMetrics.metrics.bigOpSpacing5}, - ], "bottom", bottom, options); - - // See comment above about slants - finalGroup.children[0].style.marginLeft = -slant + "em"; - finalGroup.children[2].style.marginLeft = slant + "em"; - } - - return makeSpan(["mop", "op-limits"], [finalGroup]); - } else { - if (group.value.symbol) { - base.style.top = baseShift + "em"; - } - - return base; - } -}; - -groupTypes.katex = function(group, options, prev) { - // The KaTeX logo. The offsets for the K and a were chosen to look - // good, but the offsets for the T, E, and X were taken from the - // definition of \TeX in TeX (see TeXbook pg. 356) - var k = makeSpan( - ["k"], [buildCommon.mathsym("K", group.mode)]); - var a = makeSpan( - ["a"], [buildCommon.mathsym("A", group.mode)]); - - a.height = (a.height + 0.2) * 0.75; - a.depth = (a.height - 0.2) * 0.75; - - var t = makeSpan( - ["t"], [buildCommon.mathsym("T", group.mode)]); - var e = makeSpan( - ["e"], [buildCommon.mathsym("E", group.mode)]); - - e.height = (e.height - 0.2155); - e.depth = (e.depth + 0.2155); - - var x = makeSpan( - ["x"], [buildCommon.mathsym("X", group.mode)]); - - return makeSpan( - ["katex-logo", "mord"], [k, a, t, e, x], options.getColor()); -}; - -groupTypes.overline = function(group, options, prev) { - // Overlines are handled in the TeXbook pg 443, Rule 9. - - // Build the inner group in the cramped style. - var innerGroup = buildGroup(group.value.body, - options.withStyle(options.style.cramp())); - - var ruleWidth = fontMetrics.metrics.defaultRuleThickness / - options.style.sizeMultiplier; - - // Create the line above the body - var line = makeSpan( - [options.style.reset(), Style.TEXT.cls(), "overline-line"]); - line.height = ruleWidth; - line.maxFontSize = 1.0; - - // Generate the vlist, with the appropriate kerns - var vlist = buildCommon.makeVList([ - {type: "elem", elem: innerGroup}, - {type: "kern", size: 3 * ruleWidth}, - {type: "elem", elem: line}, - {type: "kern", size: ruleWidth}, - ], "firstBaseline", null, options); - - return makeSpan(["overline", "mord"], [vlist], options.getColor()); -}; - -groupTypes.sqrt = function(group, options, prev) { - // Square roots are handled in the TeXbook pg. 443, Rule 11. - - // First, we do the same steps as in overline to build the inner group - // and line - var inner = buildGroup(group.value.body, - options.withStyle(options.style.cramp())); - - var ruleWidth = fontMetrics.metrics.defaultRuleThickness / - options.style.sizeMultiplier; - - var line = makeSpan( - [options.style.reset(), Style.TEXT.cls(), "sqrt-line"], [], - options.getColor()); - line.height = ruleWidth; - line.maxFontSize = 1.0; - - var phi = ruleWidth; - if (options.style.id < Style.TEXT.id) { - phi = fontMetrics.metrics.xHeight; - } - - // Calculate the clearance between the body and line - var lineClearance = ruleWidth + phi / 4; - - var innerHeight = - (inner.height + inner.depth) * options.style.sizeMultiplier; - var minDelimiterHeight = innerHeight + lineClearance + ruleWidth; - - // Create a \surd delimiter of the required minimum size - var delim = makeSpan(["sqrt-sign"], [ - delimiter.customSizedDelim("\\surd", minDelimiterHeight, - false, options, group.mode)], - options.getColor()); - - var delimDepth = (delim.height + delim.depth) - ruleWidth; - - // Adjust the clearance based on the delimiter size - if (delimDepth > inner.height + inner.depth + lineClearance) { - lineClearance = - (lineClearance + delimDepth - inner.height - inner.depth) / 2; - } - - // Shift the delimiter so that its top lines up with the top of the line - var delimShift = -(inner.height + lineClearance + ruleWidth) + delim.height; - delim.style.top = delimShift + "em"; - delim.height -= delimShift; - delim.depth += delimShift; - - // We add a special case here, because even when `inner` is empty, we - // still get a line. So, we use a simple heuristic to decide if we - // should omit the body entirely. (note this doesn't work for something - // like `\sqrt{\rlap{x}}`, but if someone is doing that they deserve for - // it not to work. - var body; - if (inner.height === 0 && inner.depth === 0) { - body = makeSpan(); - } else { - body = buildCommon.makeVList([ - {type: "elem", elem: inner}, - {type: "kern", size: lineClearance}, - {type: "elem", elem: line}, - {type: "kern", size: ruleWidth}, - ], "firstBaseline", null, options); - } - - if (!group.value.index) { - return makeSpan(["sqrt", "mord"], [delim, body]); - } else { - // Handle the optional root index - - // The index is always in scriptscript style - var root = buildGroup( - group.value.index, - options.withStyle(Style.SCRIPTSCRIPT)); - var rootWrap = makeSpan( - [options.style.reset(), Style.SCRIPTSCRIPT.cls()], - [root]); - - // Figure out the height and depth of the inner part - var innerRootHeight = Math.max(delim.height, body.height); - var innerRootDepth = Math.max(delim.depth, body.depth); - - // The amount the index is shifted by. This is taken from the TeX - // source, in the definition of `\r@@t`. - var toShift = 0.6 * (innerRootHeight - innerRootDepth); - - // Build a VList with the superscript shifted up correctly - var rootVList = buildCommon.makeVList( - [{type: "elem", elem: rootWrap}], - "shift", -toShift, options); - // Add a class surrounding it so we can add on the appropriate - // kerning - var rootVListWrap = makeSpan(["root"], [rootVList]); - - return makeSpan(["sqrt", "mord"], [rootVListWrap, delim, body]); - } -}; - -groupTypes.sizing = function(group, options, prev) { - // Handle sizing operators like \Huge. Real TeX doesn't actually allow - // these functions inside of math expressions, so we do some special - // handling. - var inner = buildExpression(group.value.value, - options.withSize(group.value.size), prev); - - var span = makeSpan(["mord"], - [makeSpan(["sizing", "reset-" + options.size, group.value.size, - options.style.cls()], - inner)]); - - // Calculate the correct maxFontSize manually - var fontSize = buildCommon.sizingMultiplier[group.value.size]; - span.maxFontSize = fontSize * options.style.sizeMultiplier; - - return span; -}; - -groupTypes.styling = function(group, options, prev) { - // Style changes are handled in the TeXbook on pg. 442, Rule 3. - - // Figure out what style we're changing to. - var style = { - "display": Style.DISPLAY, - "text": Style.TEXT, - "script": Style.SCRIPT, - "scriptscript": Style.SCRIPTSCRIPT, - }; - - var newStyle = style[group.value.style]; - - // Build the inner expression in the new style. - var inner = buildExpression( - group.value.value, options.withStyle(newStyle), prev); - - return makeSpan([options.style.reset(), newStyle.cls()], inner); -}; - -groupTypes.font = function(group, options, prev) { - var font = group.value.font; - return buildGroup(group.value.body, options.withFont(font), prev); -}; - -groupTypes.delimsizing = function(group, options, prev) { - var delim = group.value.value; - - if (delim === ".") { - // Empty delimiters still count as elements, even though they don't - // show anything. - return makeSpan([groupToType[group.value.delimType]]); - } - - // Use delimiter.sizedDelim to generate the delimiter. - return makeSpan( - [groupToType[group.value.delimType]], - [delimiter.sizedDelim( - delim, group.value.size, options, group.mode)]); -}; - -groupTypes.leftright = function(group, options, prev) { - // Build the inner expression - var inner = buildExpression(group.value.body, options.reset()); - - var innerHeight = 0; - var innerDepth = 0; - - // Calculate its height and depth - for (var i = 0; i < inner.length; i++) { - innerHeight = Math.max(inner[i].height, innerHeight); - innerDepth = Math.max(inner[i].depth, innerDepth); - } - - // The size of delimiters is the same, regardless of what style we are - // in. Thus, to correctly calculate the size of delimiter we need around - // a group, we scale down the inner size based on the size. - innerHeight *= options.style.sizeMultiplier; - innerDepth *= options.style.sizeMultiplier; - - var leftDelim; - if (group.value.left === ".") { - // Empty delimiters in \left and \right make null delimiter spaces. - leftDelim = makeNullDelimiter(options); - } else { - // Otherwise, use leftRightDelim to generate the correct sized - // delimiter. - leftDelim = delimiter.leftRightDelim( - group.value.left, innerHeight, innerDepth, options, - group.mode); - } - // Add it to the beginning of the expression - inner.unshift(leftDelim); - - var rightDelim; - // Same for the right delimiter - if (group.value.right === ".") { - rightDelim = makeNullDelimiter(options); - } else { - rightDelim = delimiter.leftRightDelim( - group.value.right, innerHeight, innerDepth, options, - group.mode); - } - // Add it to the end of the expression. - inner.push(rightDelim); - - return makeSpan( - ["minner", options.style.cls()], inner, options.getColor()); -}; - -groupTypes.rule = function(group, options, prev) { - // Make an empty span for the rule - var rule = makeSpan(["mord", "rule"], [], options.getColor()); - - // Calculate the shift, width, and height of the rule, and account for units - var shift = 0; - if (group.value.shift) { - shift = group.value.shift.number; - if (group.value.shift.unit === "ex") { - shift *= fontMetrics.metrics.xHeight; - } - } - - var width = group.value.width.number; - if (group.value.width.unit === "ex") { - width *= fontMetrics.metrics.xHeight; - } - - var height = group.value.height.number; - if (group.value.height.unit === "ex") { - height *= fontMetrics.metrics.xHeight; - } - - // The sizes of rules are absolute, so make it larger if we are in a - // smaller style. - shift /= options.style.sizeMultiplier; - width /= options.style.sizeMultiplier; - height /= options.style.sizeMultiplier; - - // Style the rule to the right size - rule.style.borderRightWidth = width + "em"; - rule.style.borderTopWidth = height + "em"; - rule.style.bottom = shift + "em"; - - // Record the height and width - rule.width = width; - rule.height = height + shift; - rule.depth = -shift; - - return rule; -}; - -groupTypes.accent = function(group, options, prev) { - // Accents are handled in the TeXbook pg. 443, rule 12. - var base = group.value.base; - - var supsubGroup; - if (group.type === "supsub") { - // If our base is a character box, and we have superscripts and - // subscripts, the supsub will defer to us. In particular, we want - // to attach the superscripts and subscripts to the inner body (so - // that the position of the superscripts and subscripts won't be - // affected by the height of the accent). We accomplish this by - // sticking the base of the accent into the base of the supsub, and - // rendering that, while keeping track of where the accent is. - - // The supsub group is the group that was passed in - var supsub = group; - // The real accent group is the base of the supsub group - group = supsub.value.base; - // The character box is the base of the accent group - base = group.value.base; - // Stick the character box into the base of the supsub group - supsub.value.base = base; - - // Rerender the supsub group with its new base, and store that - // result. - supsubGroup = buildGroup( - supsub, options.reset(), prev); - } - - // Build the base group - var body = buildGroup( - base, options.withStyle(options.style.cramp())); - - // Calculate the skew of the accent. This is based on the line "If the - // nucleus is not a single character, let s = 0; otherwise set s to the - // kern amount for the nucleus followed by the \skewchar of its font." - // Note that our skew metrics are just the kern between each character - // and the skewchar. - var skew; - if (isCharacterBox(base)) { - // If the base is a character box, then we want the skew of the - // innermost character. To do that, we find the innermost character: - var baseChar = getBaseElem(base); - // Then, we render its group to get the symbol inside it - var baseGroup = buildGroup( - baseChar, options.withStyle(options.style.cramp())); - // Finally, we pull the skew off of the symbol. - skew = baseGroup.skew; - // Note that we now throw away baseGroup, because the layers we - // removed with getBaseElem might contain things like \color which - // we can't get rid of. - // TODO(emily): Find a better way to get the skew - } else { - skew = 0; - } - - // calculate the amount of space between the body and the accent - var clearance = Math.min(body.height, fontMetrics.metrics.xHeight); - - // Build the accent - var accent = buildCommon.makeSymbol( - group.value.accent, "Main-Regular", "math", options.getColor()); - // Remove the italic correction of the accent, because it only serves to - // shift the accent over to a place we don't want. - accent.italic = 0; - - // The \vec character that the fonts use is a combining character, and - // thus shows up much too far to the left. To account for this, we add a - // specific class which shifts the accent over to where we want it. - // TODO(emily): Fix this in a better way, like by changing the font - var vecClass = group.value.accent === "\\vec" ? "accent-vec" : null; - - var accentBody = makeSpan(["accent-body", vecClass], [ - makeSpan([], [accent])]); - - accentBody = buildCommon.makeVList([ - {type: "elem", elem: body}, - {type: "kern", size: -clearance}, - {type: "elem", elem: accentBody}, - ], "firstBaseline", null, options); - - // Shift the accent over by the skew. Note we shift by twice the skew - // because we are centering the accent, so by adding 2*skew to the left, - // we shift it to the right by 1*skew. - accentBody.children[1].style.marginLeft = 2 * skew + "em"; - - var accentWrap = makeSpan(["mord", "accent"], [accentBody]); - - if (supsubGroup) { - // Here, we replace the "base" child of the supsub with our newly - // generated accent. - supsubGroup.children[0] = accentWrap; - - // Since we don't rerun the height calculation after replacing the - // accent, we manually recalculate height. - supsubGroup.height = Math.max(accentWrap.height, supsubGroup.height); - - // Accents should always be ords, even when their innards are not. - supsubGroup.classes[0] = "mord"; - - return supsubGroup; - } else { - return accentWrap; - } -}; - -groupTypes.phantom = function(group, options, prev) { - var elements = buildExpression( - group.value.value, - options.withPhantom(), - prev - ); - - // \phantom isn't supposed to affect the elements it contains. - // See "color" for more details. - return new buildCommon.makeFragment(elements); -}; - -/** - * buildGroup is the function that takes a group and calls the correct groupType - * function for it. It also handles the interaction of size and style changes - * between parents and children. - */ -var buildGroup = function(group, options, prev) { - if (!group) { - return makeSpan(); - } - - if (groupTypes[group.type]) { - // Call the groupTypes function - var groupNode = groupTypes[group.type](group, options, prev); - var multiplier; - - // If the style changed between the parent and the current group, - // account for the size difference - if (options.style !== options.parentStyle) { - multiplier = options.style.sizeMultiplier / - options.parentStyle.sizeMultiplier; - - groupNode.height *= multiplier; - groupNode.depth *= multiplier; - } - - // If the size changed between the parent and the current group, account - // for that size difference. - if (options.size !== options.parentSize) { - multiplier = buildCommon.sizingMultiplier[options.size] / - buildCommon.sizingMultiplier[options.parentSize]; - - groupNode.height *= multiplier; - groupNode.depth *= multiplier; - } - - return groupNode; - } else { - throw new ParseError( - "Got group of unknown type: '" + group.type + "'"); - } -}; - -/** - * Take an entire parse tree, and build it into an appropriate set of HTML - * nodes. - */ -var buildHTML = function(tree, options) { - // buildExpression is destructive, so we need to make a clone - // of the incoming tree so that it isn't accidentally changed - tree = JSON.parse(JSON.stringify(tree)); - - // Build the expression contained in the tree - var expression = buildExpression(tree, options); - var body = makeSpan(["base", options.style.cls()], expression); - - // Add struts, which ensure that the top of the HTML element falls at the - // height of the expression, and the bottom of the HTML element falls at the - // depth of the expression. - var topStrut = makeSpan(["strut"]); - var bottomStrut = makeSpan(["strut", "bottom"]); - - topStrut.style.height = body.height + "em"; - bottomStrut.style.height = (body.height + body.depth) + "em"; - // We'd like to use `vertical-align: top` but in IE 9 this lowers the - // baseline of the box to the bottom of this strut (instead staying in the - // normal place) so we use an absolute value for vertical-align instead - bottomStrut.style.verticalAlign = -body.depth + "em"; - - // Wrap the struts and body together - var htmlNode = makeSpan(["katex-html"], [topStrut, bottomStrut, body]); - - htmlNode.setAttribute("aria-hidden", "true"); - - return htmlNode; -}; - -module.exports = buildHTML; diff --git a/webapp/non_npm_dependencies/katex/src/buildMathML.js b/webapp/non_npm_dependencies/katex/src/buildMathML.js deleted file mode 100644 index f3c7c5e1c..000000000 --- a/webapp/non_npm_dependencies/katex/src/buildMathML.js +++ /dev/null @@ -1,519 +0,0 @@ -/** - * This file converts a parse tree into a cooresponding MathML tree. The main - * entry point is the `buildMathML` function, which takes a parse tree from the - * parser. - */ - -var buildCommon = require("./buildCommon"); -var fontMetrics = require("./fontMetrics"); -var mathMLTree = require("./mathMLTree"); -var ParseError = require("./ParseError"); -var symbols = require("./symbols"); -var utils = require("./utils"); - -var makeSpan = buildCommon.makeSpan; -var fontMap = buildCommon.fontMap; - -/** - * Takes a symbol and converts it into a MathML text node after performing - * optional replacement from symbols.js. - */ -var makeText = function(text, mode) { - if (symbols[mode][text] && symbols[mode][text].replace) { - text = symbols[mode][text].replace; - } - - return new mathMLTree.TextNode(text); -}; - -/** - * Returns the math variant as a string or null if none is required. - */ -var getVariant = function(group, options) { - var font = options.font; - if (!font) { - return null; - } - - var mode = group.mode; - if (font === "mathit") { - return "italic"; - } - - var value = group.value; - if (utils.contains(["\\imath", "\\jmath"], value)) { - return null; - } - - if (symbols[mode][value] && symbols[mode][value].replace) { - value = symbols[mode][value].replace; - } - - var fontName = fontMap[font].fontName; - if (fontMetrics.getCharacterMetrics(value, fontName)) { - return fontMap[options.font].variant; - } - - return null; -}; - -/** - * Functions for handling the different types of groups found in the parse - * tree. Each function should take a parse group and return a MathML node. - */ -var groupTypes = {}; - -groupTypes.mathord = function(group, options) { - var node = new mathMLTree.MathNode( - "mi", - [makeText(group.value, group.mode)]); - - var variant = getVariant(group, options); - if (variant) { - node.setAttribute("mathvariant", variant); - } - return node; -}; - -groupTypes.textord = function(group, options) { - var text = makeText(group.value, group.mode); - - var variant = getVariant(group, options) || "normal"; - - var node; - if (/[0-9]/.test(group.value)) { - // TODO(kevinb) merge adjacent <mn> nodes - // do it as a post processing step - node = new mathMLTree.MathNode("mn", [text]); - if (options.font) { - node.setAttribute("mathvariant", variant); - } - } else { - node = new mathMLTree.MathNode("mi", [text]); - node.setAttribute("mathvariant", variant); - } - - return node; -}; - -groupTypes.bin = function(group) { - var node = new mathMLTree.MathNode( - "mo", [makeText(group.value, group.mode)]); - - return node; -}; - -groupTypes.rel = function(group) { - var node = new mathMLTree.MathNode( - "mo", [makeText(group.value, group.mode)]); - - return node; -}; - -groupTypes.open = function(group) { - var node = new mathMLTree.MathNode( - "mo", [makeText(group.value, group.mode)]); - - return node; -}; - -groupTypes.close = function(group) { - var node = new mathMLTree.MathNode( - "mo", [makeText(group.value, group.mode)]); - - return node; -}; - -groupTypes.inner = function(group) { - var node = new mathMLTree.MathNode( - "mo", [makeText(group.value, group.mode)]); - - return node; -}; - -groupTypes.punct = function(group) { - var node = new mathMLTree.MathNode( - "mo", [makeText(group.value, group.mode)]); - - node.setAttribute("separator", "true"); - - return node; -}; - -groupTypes.ordgroup = function(group, options) { - var inner = buildExpression(group.value, options); - - var node = new mathMLTree.MathNode("mrow", inner); - - return node; -}; - -groupTypes.text = function(group, options) { - var inner = buildExpression(group.value.body, options); - - var node = new mathMLTree.MathNode("mtext", inner); - - return node; -}; - -groupTypes.color = function(group, options) { - var inner = buildExpression(group.value.value, options); - - var node = new mathMLTree.MathNode("mstyle", inner); - - node.setAttribute("mathcolor", group.value.color); - - return node; -}; - -groupTypes.supsub = function(group, options) { - var children = [buildGroup(group.value.base, options)]; - - if (group.value.sub) { - children.push(buildGroup(group.value.sub, options)); - } - - if (group.value.sup) { - children.push(buildGroup(group.value.sup, options)); - } - - var nodeType; - if (!group.value.sub) { - nodeType = "msup"; - } else if (!group.value.sup) { - nodeType = "msub"; - } else { - nodeType = "msubsup"; - } - - var node = new mathMLTree.MathNode(nodeType, children); - - return node; -}; - -groupTypes.genfrac = function(group, options) { - var node = new mathMLTree.MathNode( - "mfrac", - [buildGroup(group.value.numer, options), - buildGroup(group.value.denom, options)]); - - if (!group.value.hasBarLine) { - node.setAttribute("linethickness", "0px"); - } - - if (group.value.leftDelim != null || group.value.rightDelim != null) { - var withDelims = []; - - if (group.value.leftDelim != null) { - var leftOp = new mathMLTree.MathNode( - "mo", [new mathMLTree.TextNode(group.value.leftDelim)]); - - leftOp.setAttribute("fence", "true"); - - withDelims.push(leftOp); - } - - withDelims.push(node); - - if (group.value.rightDelim != null) { - var rightOp = new mathMLTree.MathNode( - "mo", [new mathMLTree.TextNode(group.value.rightDelim)]); - - rightOp.setAttribute("fence", "true"); - - withDelims.push(rightOp); - } - - var outerNode = new mathMLTree.MathNode("mrow", withDelims); - - return outerNode; - } - - return node; -}; - -groupTypes.array = function(group, options) { - return new mathMLTree.MathNode( - "mtable", group.value.body.map(function(row) { - return new mathMLTree.MathNode( - "mtr", row.map(function(cell) { - return new mathMLTree.MathNode( - "mtd", [buildGroup(cell, options)]); - })); - })); -}; - -groupTypes.sqrt = function(group, options) { - var node; - if (group.value.index) { - node = new mathMLTree.MathNode( - "mroot", [ - buildGroup(group.value.body, options), - buildGroup(group.value.index, options), - ]); - } else { - node = new mathMLTree.MathNode( - "msqrt", [buildGroup(group.value.body, options)]); - } - - return node; -}; - -groupTypes.leftright = function(group, options) { - var inner = buildExpression(group.value.body, options); - - if (group.value.left !== ".") { - var leftNode = new mathMLTree.MathNode( - "mo", [makeText(group.value.left, group.mode)]); - - leftNode.setAttribute("fence", "true"); - - inner.unshift(leftNode); - } - - if (group.value.right !== ".") { - var rightNode = new mathMLTree.MathNode( - "mo", [makeText(group.value.right, group.mode)]); - - rightNode.setAttribute("fence", "true"); - - inner.push(rightNode); - } - - var outerNode = new mathMLTree.MathNode("mrow", inner); - - return outerNode; -}; - -groupTypes.accent = function(group, options) { - var accentNode = new mathMLTree.MathNode( - "mo", [makeText(group.value.accent, group.mode)]); - - var node = new mathMLTree.MathNode( - "mover", - [buildGroup(group.value.base, options), - accentNode]); - - node.setAttribute("accent", "true"); - - return node; -}; - -groupTypes.spacing = function(group) { - var node; - - if (group.value === "\\ " || group.value === "\\space" || - group.value === " " || group.value === "~") { - node = new mathMLTree.MathNode( - "mtext", [new mathMLTree.TextNode("\u00a0")]); - } else { - node = new mathMLTree.MathNode("mspace"); - - node.setAttribute( - "width", buildCommon.spacingFunctions[group.value].size); - } - - return node; -}; - -groupTypes.op = function(group) { - var node; - - // TODO(emily): handle big operators using the `largeop` attribute - - if (group.value.symbol) { - // This is a symbol. Just add the symbol. - node = new mathMLTree.MathNode( - "mo", [makeText(group.value.body, group.mode)]); - } else { - // This is a text operator. Add all of the characters from the - // operator's name. - // TODO(emily): Add a space in the middle of some of these - // operators, like \limsup. - node = new mathMLTree.MathNode( - "mi", [new mathMLTree.TextNode(group.value.body.slice(1))]); - } - - return node; -}; - -groupTypes.katex = function(group) { - var node = new mathMLTree.MathNode( - "mtext", [new mathMLTree.TextNode("KaTeX")]); - - return node; -}; - -groupTypes.font = function(group, options) { - var font = group.value.font; - return buildGroup(group.value.body, options.withFont(font)); -}; - -groupTypes.delimsizing = function(group) { - var children = []; - - if (group.value.value !== ".") { - children.push(makeText(group.value.value, group.mode)); - } - - var node = new mathMLTree.MathNode("mo", children); - - if (group.value.delimType === "open" || - group.value.delimType === "close") { - // Only some of the delimsizing functions act as fences, and they - // return "open" or "close" delimTypes. - node.setAttribute("fence", "true"); - } else { - // Explicitly disable fencing if it's not a fence, to override the - // defaults. - node.setAttribute("fence", "false"); - } - - return node; -}; - -groupTypes.styling = function(group, options) { - var inner = buildExpression(group.value.value, options); - - var node = new mathMLTree.MathNode("mstyle", inner); - - var styleAttributes = { - "display": ["0", "true"], - "text": ["0", "false"], - "script": ["1", "false"], - "scriptscript": ["2", "false"], - }; - - var attr = styleAttributes[group.value.style]; - - node.setAttribute("scriptlevel", attr[0]); - node.setAttribute("displaystyle", attr[1]); - - return node; -}; - -groupTypes.sizing = function(group, options) { - var inner = buildExpression(group.value.value, options); - - var node = new mathMLTree.MathNode("mstyle", inner); - - // TODO(emily): This doesn't produce the correct size for nested size - // changes, because we don't keep state of what style we're currently - // in, so we can't reset the size to normal before changing it. Now - // that we're passing an options parameter we should be able to fix - // this. - node.setAttribute( - "mathsize", buildCommon.sizingMultiplier[group.value.size] + "em"); - - return node; -}; - -groupTypes.overline = function(group, options) { - var operator = new mathMLTree.MathNode( - "mo", [new mathMLTree.TextNode("\u203e")]); - operator.setAttribute("stretchy", "true"); - - var node = new mathMLTree.MathNode( - "mover", - [buildGroup(group.value.body, options), - operator]); - node.setAttribute("accent", "true"); - - return node; -}; - -groupTypes.rule = function(group) { - // TODO(emily): Figure out if there's an actual way to draw black boxes - // in MathML. - var node = new mathMLTree.MathNode("mrow"); - - return node; -}; - -groupTypes.llap = function(group, options) { - var node = new mathMLTree.MathNode( - "mpadded", [buildGroup(group.value.body, options)]); - - node.setAttribute("lspace", "-1width"); - node.setAttribute("width", "0px"); - - return node; -}; - -groupTypes.rlap = function(group, options) { - var node = new mathMLTree.MathNode( - "mpadded", [buildGroup(group.value.body, options)]); - - node.setAttribute("width", "0px"); - - return node; -}; - -groupTypes.phantom = function(group, options, prev) { - var inner = buildExpression(group.value.value, options); - return new mathMLTree.MathNode("mphantom", inner); -}; - -/** - * Takes a list of nodes, builds them, and returns a list of the generated - * MathML nodes. A little simpler than the HTML version because we don't do any - * previous-node handling. - */ -var buildExpression = function(expression, options) { - var groups = []; - for (var i = 0; i < expression.length; i++) { - var group = expression[i]; - groups.push(buildGroup(group, options)); - } - return groups; -}; - -/** - * Takes a group from the parser and calls the appropriate groupTypes function - * on it to produce a MathML node. - */ -var buildGroup = function(group, options) { - if (!group) { - return new mathMLTree.MathNode("mrow"); - } - - if (groupTypes[group.type]) { - // Call the groupTypes function - return groupTypes[group.type](group, options); - } else { - throw new ParseError( - "Got group of unknown type: '" + group.type + "'"); - } -}; - -/** - * Takes a full parse tree and settings and builds a MathML representation of - * it. In particular, we put the elements from building the parse tree into a - * <semantics> tag so we can also include that TeX source as an annotation. - * - * Note that we actually return a domTree element with a `<math>` inside it so - * we can do appropriate styling. - */ -var buildMathML = function(tree, texExpression, options) { - var expression = buildExpression(tree, options); - - // Wrap up the expression in an mrow so it is presented in the semantics - // tag correctly. - var wrapper = new mathMLTree.MathNode("mrow", expression); - - // Build a TeX annotation of the source - var annotation = new mathMLTree.MathNode( - "annotation", [new mathMLTree.TextNode(texExpression)]); - - annotation.setAttribute("encoding", "application/x-tex"); - - var semantics = new mathMLTree.MathNode( - "semantics", [wrapper, annotation]); - - var math = new mathMLTree.MathNode("math", [semantics]); - - // You can't style <math> nodes, so we wrap the node in a span. - return makeSpan(["katex-mathml"], [math]); -}; - -module.exports = buildMathML; diff --git a/webapp/non_npm_dependencies/katex/src/buildTree.js b/webapp/non_npm_dependencies/katex/src/buildTree.js deleted file mode 100644 index 4a8c2aeda..000000000 --- a/webapp/non_npm_dependencies/katex/src/buildTree.js +++ /dev/null @@ -1,40 +0,0 @@ -var buildHTML = require("./buildHTML"); -var buildMathML = require("./buildMathML"); -var buildCommon = require("./buildCommon"); -var Options = require("./Options"); -var Settings = require("./Settings"); -var Style = require("./Style"); - -var makeSpan = buildCommon.makeSpan; - -var buildTree = function(tree, expression, settings) { - settings = settings || new Settings({}); - - var startStyle = Style.TEXT; - if (settings.displayMode) { - startStyle = Style.DISPLAY; - } - - // Setup the default options - var options = new Options({ - style: startStyle, - size: "size5", - }); - - // `buildHTML` sometimes messes with the parse tree (like turning bins -> - // ords), so we build the MathML version first. - var mathMLNode = buildMathML(tree, expression, options); - var htmlNode = buildHTML(tree, options); - - var katexNode = makeSpan(["katex"], [ - mathMLNode, htmlNode, - ]); - - if (settings.displayMode) { - return makeSpan(["katex-display"], [katexNode]); - } else { - return katexNode; - } -}; - -module.exports = buildTree; diff --git a/webapp/non_npm_dependencies/katex/src/delimiter.js b/webapp/non_npm_dependencies/katex/src/delimiter.js deleted file mode 100644 index 168319d41..000000000 --- a/webapp/non_npm_dependencies/katex/src/delimiter.js +++ /dev/null @@ -1,542 +0,0 @@ -/** - * This file deals with creating delimiters of various sizes. The TeXbook - * discusses these routines on page 441-442, in the "Another subroutine sets box - * x to a specified variable delimiter" paragraph. - * - * There are three main routines here. `makeSmallDelim` makes a delimiter in the - * normal font, but in either text, script, or scriptscript style. - * `makeLargeDelim` makes a delimiter in textstyle, but in one of the Size1, - * Size2, Size3, or Size4 fonts. `makeStackedDelim` makes a delimiter out of - * smaller pieces that are stacked on top of one another. - * - * The functions take a parameter `center`, which determines if the delimiter - * should be centered around the axis. - * - * Then, there are three exposed functions. `sizedDelim` makes a delimiter in - * one of the given sizes. This is used for things like `\bigl`. - * `customSizedDelim` makes a delimiter with a given total height+depth. It is - * called in places like `\sqrt`. `leftRightDelim` makes an appropriate - * delimiter which surrounds an expression of a given height an depth. It is - * used in `\left` and `\right`. - */ - -var ParseError = require("./ParseError"); -var Style = require("./Style"); - -var buildCommon = require("./buildCommon"); -var fontMetrics = require("./fontMetrics"); -var symbols = require("./symbols"); -var utils = require("./utils"); - -var makeSpan = buildCommon.makeSpan; - -/** - * Get the metrics for a given symbol and font, after transformation (i.e. - * after following replacement from symbols.js) - */ -var getMetrics = function(symbol, font) { - if (symbols.math[symbol] && symbols.math[symbol].replace) { - return fontMetrics.getCharacterMetrics( - symbols.math[symbol].replace, font); - } else { - return fontMetrics.getCharacterMetrics( - symbol, font); - } -}; - -/** - * Builds a symbol in the given font size (note size is an integer) - */ -var mathrmSize = function(value, size, mode) { - return buildCommon.makeSymbol(value, "Size" + size + "-Regular", mode); -}; - -/** - * Puts a delimiter span in a given style, and adds appropriate height, depth, - * and maxFontSizes. - */ -var styleWrap = function(delim, toStyle, options) { - var span = makeSpan( - ["style-wrap", options.style.reset(), toStyle.cls()], [delim]); - - var multiplier = toStyle.sizeMultiplier / options.style.sizeMultiplier; - - span.height *= multiplier; - span.depth *= multiplier; - span.maxFontSize = toStyle.sizeMultiplier; - - return span; -}; - -/** - * Makes a small delimiter. This is a delimiter that comes in the Main-Regular - * font, but is restyled to either be in textstyle, scriptstyle, or - * scriptscriptstyle. - */ -var makeSmallDelim = function(delim, style, center, options, mode) { - var text = buildCommon.makeSymbol(delim, "Main-Regular", mode); - - var span = styleWrap(text, style, options); - - if (center) { - var shift = - (1 - options.style.sizeMultiplier / style.sizeMultiplier) * - fontMetrics.metrics.axisHeight; - - span.style.top = shift + "em"; - span.height -= shift; - span.depth += shift; - } - - return span; -}; - -/** - * Makes a large delimiter. This is a delimiter that comes in the Size1, Size2, - * Size3, or Size4 fonts. It is always rendered in textstyle. - */ -var makeLargeDelim = function(delim, size, center, options, mode) { - var inner = mathrmSize(delim, size, mode); - - var span = styleWrap( - makeSpan(["delimsizing", "size" + size], - [inner], options.getColor()), - Style.TEXT, options); - - if (center) { - var shift = (1 - options.style.sizeMultiplier) * - fontMetrics.metrics.axisHeight; - - span.style.top = shift + "em"; - span.height -= shift; - span.depth += shift; - } - - return span; -}; - -/** - * Make an inner span with the given offset and in the given font. This is used - * in `makeStackedDelim` to make the stacking pieces for the delimiter. - */ -var makeInner = function(symbol, font, mode) { - var sizeClass; - // Apply the correct CSS class to choose the right font. - if (font === "Size1-Regular") { - sizeClass = "delim-size1"; - } else if (font === "Size4-Regular") { - sizeClass = "delim-size4"; - } - - var inner = makeSpan( - ["delimsizinginner", sizeClass], - [makeSpan([], [buildCommon.makeSymbol(symbol, font, mode)])]); - - // Since this will be passed into `makeVList` in the end, wrap the element - // in the appropriate tag that VList uses. - return {type: "elem", elem: inner}; -}; - -/** - * Make a stacked delimiter out of a given delimiter, with the total height at - * least `heightTotal`. This routine is mentioned on page 442 of the TeXbook. - */ -var makeStackedDelim = function(delim, heightTotal, center, options, mode) { - // There are four parts, the top, an optional middle, a repeated part, and a - // bottom. - var top; - var middle; - var repeat; - var bottom; - top = repeat = bottom = delim; - middle = null; - // Also keep track of what font the delimiters are in - var font = "Size1-Regular"; - - // We set the parts and font based on the symbol. Note that we use - // '\u23d0' instead of '|' and '\u2016' instead of '\\|' for the - // repeats of the arrows - if (delim === "\\uparrow") { - repeat = bottom = "\u23d0"; - } else if (delim === "\\Uparrow") { - repeat = bottom = "\u2016"; - } else if (delim === "\\downarrow") { - top = repeat = "\u23d0"; - } else if (delim === "\\Downarrow") { - top = repeat = "\u2016"; - } else if (delim === "\\updownarrow") { - top = "\\uparrow"; - repeat = "\u23d0"; - bottom = "\\downarrow"; - } else if (delim === "\\Updownarrow") { - top = "\\Uparrow"; - repeat = "\u2016"; - bottom = "\\Downarrow"; - } else if (delim === "[" || delim === "\\lbrack") { - top = "\u23a1"; - repeat = "\u23a2"; - bottom = "\u23a3"; - font = "Size4-Regular"; - } else if (delim === "]" || delim === "\\rbrack") { - top = "\u23a4"; - repeat = "\u23a5"; - bottom = "\u23a6"; - font = "Size4-Regular"; - } else if (delim === "\\lfloor") { - repeat = top = "\u23a2"; - bottom = "\u23a3"; - font = "Size4-Regular"; - } else if (delim === "\\lceil") { - top = "\u23a1"; - repeat = bottom = "\u23a2"; - font = "Size4-Regular"; - } else if (delim === "\\rfloor") { - repeat = top = "\u23a5"; - bottom = "\u23a6"; - font = "Size4-Regular"; - } else if (delim === "\\rceil") { - top = "\u23a4"; - repeat = bottom = "\u23a5"; - font = "Size4-Regular"; - } else if (delim === "(") { - top = "\u239b"; - repeat = "\u239c"; - bottom = "\u239d"; - font = "Size4-Regular"; - } else if (delim === ")") { - top = "\u239e"; - repeat = "\u239f"; - bottom = "\u23a0"; - font = "Size4-Regular"; - } else if (delim === "\\{" || delim === "\\lbrace") { - top = "\u23a7"; - middle = "\u23a8"; - bottom = "\u23a9"; - repeat = "\u23aa"; - font = "Size4-Regular"; - } else if (delim === "\\}" || delim === "\\rbrace") { - top = "\u23ab"; - middle = "\u23ac"; - bottom = "\u23ad"; - repeat = "\u23aa"; - font = "Size4-Regular"; - } else if (delim === "\\lgroup") { - top = "\u23a7"; - bottom = "\u23a9"; - repeat = "\u23aa"; - font = "Size4-Regular"; - } else if (delim === "\\rgroup") { - top = "\u23ab"; - bottom = "\u23ad"; - repeat = "\u23aa"; - font = "Size4-Regular"; - } else if (delim === "\\lmoustache") { - top = "\u23a7"; - bottom = "\u23ad"; - repeat = "\u23aa"; - font = "Size4-Regular"; - } else if (delim === "\\rmoustache") { - top = "\u23ab"; - bottom = "\u23a9"; - repeat = "\u23aa"; - font = "Size4-Regular"; - } else if (delim === "\\surd") { - top = "\ue001"; - bottom = "\u23b7"; - repeat = "\ue000"; - font = "Size4-Regular"; - } - - // Get the metrics of the four sections - var topMetrics = getMetrics(top, font); - var topHeightTotal = topMetrics.height + topMetrics.depth; - var repeatMetrics = getMetrics(repeat, font); - var repeatHeightTotal = repeatMetrics.height + repeatMetrics.depth; - var bottomMetrics = getMetrics(bottom, font); - var bottomHeightTotal = bottomMetrics.height + bottomMetrics.depth; - var middleHeightTotal = 0; - var middleFactor = 1; - if (middle !== null) { - var middleMetrics = getMetrics(middle, font); - middleHeightTotal = middleMetrics.height + middleMetrics.depth; - middleFactor = 2; // repeat symmetrically above and below middle - } - - // Calcuate the minimal height that the delimiter can have. - // It is at least the size of the top, bottom, and optional middle combined. - var minHeight = topHeightTotal + bottomHeightTotal + middleHeightTotal; - - // Compute the number of copies of the repeat symbol we will need - var repeatCount = Math.ceil( - (heightTotal - minHeight) / (middleFactor * repeatHeightTotal)); - - // Compute the total height of the delimiter including all the symbols - var realHeightTotal = - minHeight + repeatCount * middleFactor * repeatHeightTotal; - - // The center of the delimiter is placed at the center of the axis. Note - // that in this context, "center" means that the delimiter should be - // centered around the axis in the current style, while normally it is - // centered around the axis in textstyle. - var axisHeight = fontMetrics.metrics.axisHeight; - if (center) { - axisHeight *= options.style.sizeMultiplier; - } - // Calculate the depth - var depth = realHeightTotal / 2 - axisHeight; - - // Now, we start building the pieces that will go into the vlist - - // Keep a list of the inner pieces - var inners = []; - - // Add the bottom symbol - inners.push(makeInner(bottom, font, mode)); - - var i; - if (middle === null) { - // Add that many symbols - for (i = 0; i < repeatCount; i++) { - inners.push(makeInner(repeat, font, mode)); - } - } else { - // When there is a middle bit, we need the middle part and two repeated - // sections - for (i = 0; i < repeatCount; i++) { - inners.push(makeInner(repeat, font, mode)); - } - inners.push(makeInner(middle, font, mode)); - for (i = 0; i < repeatCount; i++) { - inners.push(makeInner(repeat, font, mode)); - } - } - - // Add the top symbol - inners.push(makeInner(top, font, mode)); - - // Finally, build the vlist - var inner = buildCommon.makeVList(inners, "bottom", depth, options); - - return styleWrap( - makeSpan(["delimsizing", "mult"], [inner], options.getColor()), - Style.TEXT, options); -}; - -// There are three kinds of delimiters, delimiters that stack when they become -// too large -var stackLargeDelimiters = [ - "(", ")", "[", "\\lbrack", "]", "\\rbrack", - "\\{", "\\lbrace", "\\}", "\\rbrace", - "\\lfloor", "\\rfloor", "\\lceil", "\\rceil", - "\\surd", -]; - -// delimiters that always stack -var stackAlwaysDelimiters = [ - "\\uparrow", "\\downarrow", "\\updownarrow", - "\\Uparrow", "\\Downarrow", "\\Updownarrow", - "|", "\\|", "\\vert", "\\Vert", - "\\lvert", "\\rvert", "\\lVert", "\\rVert", - "\\lgroup", "\\rgroup", "\\lmoustache", "\\rmoustache", -]; - -// and delimiters that never stack -var stackNeverDelimiters = [ - "<", ">", "\\langle", "\\rangle", "/", "\\backslash", "\\lt", "\\gt", -]; - -// Metrics of the different sizes. Found by looking at TeX's output of -// $\bigl| // \Bigl| \biggl| \Biggl| \showlists$ -// Used to create stacked delimiters of appropriate sizes in makeSizedDelim. -var sizeToMaxHeight = [0, 1.2, 1.8, 2.4, 3.0]; - -/** - * Used to create a delimiter of a specific size, where `size` is 1, 2, 3, or 4. - */ -var makeSizedDelim = function(delim, size, options, mode) { - // < and > turn into \langle and \rangle in delimiters - if (delim === "<" || delim === "\\lt") { - delim = "\\langle"; - } else if (delim === ">" || delim === "\\gt") { - delim = "\\rangle"; - } - - // Sized delimiters are never centered. - if (utils.contains(stackLargeDelimiters, delim) || - utils.contains(stackNeverDelimiters, delim)) { - return makeLargeDelim(delim, size, false, options, mode); - } else if (utils.contains(stackAlwaysDelimiters, delim)) { - return makeStackedDelim( - delim, sizeToMaxHeight[size], false, options, mode); - } else { - throw new ParseError("Illegal delimiter: '" + delim + "'"); - } -}; - -/** - * There are three different sequences of delimiter sizes that the delimiters - * follow depending on the kind of delimiter. This is used when creating custom - * sized delimiters to decide whether to create a small, large, or stacked - * delimiter. - * - * In real TeX, these sequences aren't explicitly defined, but are instead - * defined inside the font metrics. Since there are only three sequences that - * are possible for the delimiters that TeX defines, it is easier to just encode - * them explicitly here. - */ - -// Delimiters that never stack try small delimiters and large delimiters only -var stackNeverDelimiterSequence = [ - {type: "small", style: Style.SCRIPTSCRIPT}, - {type: "small", style: Style.SCRIPT}, - {type: "small", style: Style.TEXT}, - {type: "large", size: 1}, - {type: "large", size: 2}, - {type: "large", size: 3}, - {type: "large", size: 4}, -]; - -// Delimiters that always stack try the small delimiters first, then stack -var stackAlwaysDelimiterSequence = [ - {type: "small", style: Style.SCRIPTSCRIPT}, - {type: "small", style: Style.SCRIPT}, - {type: "small", style: Style.TEXT}, - {type: "stack"}, -]; - -// Delimiters that stack when large try the small and then large delimiters, and -// stack afterwards -var stackLargeDelimiterSequence = [ - {type: "small", style: Style.SCRIPTSCRIPT}, - {type: "small", style: Style.SCRIPT}, - {type: "small", style: Style.TEXT}, - {type: "large", size: 1}, - {type: "large", size: 2}, - {type: "large", size: 3}, - {type: "large", size: 4}, - {type: "stack"}, -]; - -/** - * Get the font used in a delimiter based on what kind of delimiter it is. - */ -var delimTypeToFont = function(type) { - if (type.type === "small") { - return "Main-Regular"; - } else if (type.type === "large") { - return "Size" + type.size + "-Regular"; - } else if (type.type === "stack") { - return "Size4-Regular"; - } -}; - -/** - * Traverse a sequence of types of delimiters to decide what kind of delimiter - * should be used to create a delimiter of the given height+depth. - */ -var traverseSequence = function(delim, height, sequence, options) { - // Here, we choose the index we should start at in the sequences. In smaller - // sizes (which correspond to larger numbers in style.size) we start earlier - // in the sequence. Thus, scriptscript starts at index 3-3=0, script starts - // at index 3-2=1, text starts at 3-1=2, and display starts at min(2,3-0)=2 - var start = Math.min(2, 3 - options.style.size); - for (var i = start; i < sequence.length; i++) { - if (sequence[i].type === "stack") { - // This is always the last delimiter, so we just break the loop now. - break; - } - - var metrics = getMetrics(delim, delimTypeToFont(sequence[i])); - var heightDepth = metrics.height + metrics.depth; - - // Small delimiters are scaled down versions of the same font, so we - // account for the style change size. - - if (sequence[i].type === "small") { - heightDepth *= sequence[i].style.sizeMultiplier; - } - - // Check if the delimiter at this size works for the given height. - if (heightDepth > height) { - return sequence[i]; - } - } - - // If we reached the end of the sequence, return the last sequence element. - return sequence[sequence.length - 1]; -}; - -/** - * Make a delimiter of a given height+depth, with optional centering. Here, we - * traverse the sequences, and create a delimiter that the sequence tells us to. - */ -var makeCustomSizedDelim = function(delim, height, center, options, mode) { - if (delim === "<" || delim === "\\lt") { - delim = "\\langle"; - } else if (delim === ">" || delim === "\\gt") { - delim = "\\rangle"; - } - - // Decide what sequence to use - var sequence; - if (utils.contains(stackNeverDelimiters, delim)) { - sequence = stackNeverDelimiterSequence; - } else if (utils.contains(stackLargeDelimiters, delim)) { - sequence = stackLargeDelimiterSequence; - } else { - sequence = stackAlwaysDelimiterSequence; - } - - // Look through the sequence - var delimType = traverseSequence(delim, height, sequence, options); - - // Depending on the sequence element we decided on, call the appropriate - // function. - if (delimType.type === "small") { - return makeSmallDelim(delim, delimType.style, center, options, mode); - } else if (delimType.type === "large") { - return makeLargeDelim(delim, delimType.size, center, options, mode); - } else if (delimType.type === "stack") { - return makeStackedDelim(delim, height, center, options, mode); - } -}; - -/** - * Make a delimiter for use with `\left` and `\right`, given a height and depth - * of an expression that the delimiters surround. - */ -var makeLeftRightDelim = function(delim, height, depth, options, mode) { - // We always center \left/\right delimiters, so the axis is always shifted - var axisHeight = - fontMetrics.metrics.axisHeight * options.style.sizeMultiplier; - - // Taken from TeX source, tex.web, function make_left_right - var delimiterFactor = 901; - var delimiterExtend = 5.0 / fontMetrics.metrics.ptPerEm; - - var maxDistFromAxis = Math.max( - height - axisHeight, depth + axisHeight); - - var totalHeight = Math.max( - // In real TeX, calculations are done using integral values which are - // 65536 per pt, or 655360 per em. So, the division here truncates in - // TeX but doesn't here, producing different results. If we wanted to - // exactly match TeX's calculation, we could do - // Math.floor(655360 * maxDistFromAxis / 500) * - // delimiterFactor / 655360 - // (To see the difference, compare - // x^{x^{\left(\rule{0.1em}{0.68em}\right)}} - // in TeX and KaTeX) - maxDistFromAxis / 500 * delimiterFactor, - 2 * maxDistFromAxis - delimiterExtend); - - // Finally, we defer to `makeCustomSizedDelim` with our calculated total - // height - return makeCustomSizedDelim(delim, totalHeight, true, options, mode); -}; - -module.exports = { - sizedDelim: makeSizedDelim, - customSizedDelim: makeCustomSizedDelim, - leftRightDelim: makeLeftRightDelim, -}; diff --git a/webapp/non_npm_dependencies/katex/src/domTree.js b/webapp/non_npm_dependencies/katex/src/domTree.js deleted file mode 100644 index e0d8e925a..000000000 --- a/webapp/non_npm_dependencies/katex/src/domTree.js +++ /dev/null @@ -1,269 +0,0 @@ -/** - * These objects store the data about the DOM nodes we create, as well as some - * extra data. They can then be transformed into real DOM nodes with the - * `toNode` function or HTML markup using `toMarkup`. They are useful for both - * storing extra properties on the nodes, as well as providing a way to easily - * work with the DOM. - * - * Similar functions for working with MathML nodes exist in mathMLTree.js. - */ - -var utils = require("./utils"); - -/** - * Create an HTML className based on a list of classes. In addition to joining - * with spaces, we also remove null or empty classes. - */ -var createClass = function(classes) { - classes = classes.slice(); - for (var i = classes.length - 1; i >= 0; i--) { - if (!classes[i]) { - classes.splice(i, 1); - } - } - - return classes.join(" "); -}; - -/** - * This node represents a span node, with a className, a list of children, and - * an inline style. It also contains information about its height, depth, and - * maxFontSize. - */ -function span(classes, children, height, depth, maxFontSize, style) { - this.classes = classes || []; - this.children = children || []; - this.height = height || 0; - this.depth = depth || 0; - this.maxFontSize = maxFontSize || 0; - this.style = style || {}; - this.attributes = {}; -} - -/** - * Sets an arbitrary attribute on the span. Warning: use this wisely. Not all - * browsers support attributes the same, and having too many custom attributes - * is probably bad. - */ -span.prototype.setAttribute = function(attribute, value) { - this.attributes[attribute] = value; -}; - -/** - * Convert the span into an HTML node - */ -span.prototype.toNode = function() { - var span = document.createElement("span"); - - // Apply the class - span.className = createClass(this.classes); - - // Apply inline styles - for (var style in this.style) { - if (Object.prototype.hasOwnProperty.call(this.style, style)) { - span.style[style] = this.style[style]; - } - } - - // Apply attributes - for (var attr in this.attributes) { - if (Object.prototype.hasOwnProperty.call(this.attributes, attr)) { - span.setAttribute(attr, this.attributes[attr]); - } - } - - // Append the children, also as HTML nodes - for (var i = 0; i < this.children.length; i++) { - span.appendChild(this.children[i].toNode()); - } - - return span; -}; - -/** - * Convert the span into an HTML markup string - */ -span.prototype.toMarkup = function() { - var markup = "<span"; - - // Add the class - if (this.classes.length) { - markup += " class=\""; - markup += utils.escape(createClass(this.classes)); - markup += "\""; - } - - var styles = ""; - - // Add the styles, after hyphenation - for (var style in this.style) { - if (this.style.hasOwnProperty(style)) { - styles += utils.hyphenate(style) + ":" + this.style[style] + ";"; - } - } - - if (styles) { - markup += " style=\"" + utils.escape(styles) + "\""; - } - - // Add the attributes - for (var attr in this.attributes) { - if (Object.prototype.hasOwnProperty.call(this.attributes, attr)) { - markup += " " + attr + "=\""; - markup += utils.escape(this.attributes[attr]); - markup += "\""; - } - } - - markup += ">"; - - // Add the markup of the children, also as markup - for (var i = 0; i < this.children.length; i++) { - markup += this.children[i].toMarkup(); - } - - markup += "</span>"; - - return markup; -}; - -/** - * This node represents a document fragment, which contains elements, but when - * placed into the DOM doesn't have any representation itself. Thus, it only - * contains children and doesn't have any HTML properties. It also keeps track - * of a height, depth, and maxFontSize. - */ -function documentFragment(children, height, depth, maxFontSize) { - this.children = children || []; - this.height = height || 0; - this.depth = depth || 0; - this.maxFontSize = maxFontSize || 0; -} - -/** - * Convert the fragment into a node - */ -documentFragment.prototype.toNode = function() { - // Create a fragment - var frag = document.createDocumentFragment(); - - // Append the children - for (var i = 0; i < this.children.length; i++) { - frag.appendChild(this.children[i].toNode()); - } - - return frag; -}; - -/** - * Convert the fragment into HTML markup - */ -documentFragment.prototype.toMarkup = function() { - var markup = ""; - - // Simply concatenate the markup for the children together - for (var i = 0; i < this.children.length; i++) { - markup += this.children[i].toMarkup(); - } - - return markup; -}; - -/** - * A symbol node contains information about a single symbol. It either renders - * to a single text node, or a span with a single text node in it, depending on - * whether it has CSS classes, styles, or needs italic correction. - */ -function symbolNode(value, height, depth, italic, skew, classes, style) { - this.value = value || ""; - this.height = height || 0; - this.depth = depth || 0; - this.italic = italic || 0; - this.skew = skew || 0; - this.classes = classes || []; - this.style = style || {}; - this.maxFontSize = 0; -} - -/** - * Creates a text node or span from a symbol node. Note that a span is only - * created if it is needed. - */ -symbolNode.prototype.toNode = function() { - var node = document.createTextNode(this.value); - var span = null; - - if (this.italic > 0) { - span = document.createElement("span"); - span.style.marginRight = this.italic + "em"; - } - - if (this.classes.length > 0) { - span = span || document.createElement("span"); - span.className = createClass(this.classes); - } - - for (var style in this.style) { - if (this.style.hasOwnProperty(style)) { - span = span || document.createElement("span"); - span.style[style] = this.style[style]; - } - } - - if (span) { - span.appendChild(node); - return span; - } else { - return node; - } -}; - -/** - * Creates markup for a symbol node. - */ -symbolNode.prototype.toMarkup = function() { - // TODO(alpert): More duplication than I'd like from - // span.prototype.toMarkup and symbolNode.prototype.toNode... - var needsSpan = false; - - var markup = "<span"; - - if (this.classes.length) { - needsSpan = true; - markup += " class=\""; - markup += utils.escape(createClass(this.classes)); - markup += "\""; - } - - var styles = ""; - - if (this.italic > 0) { - styles += "margin-right:" + this.italic + "em;"; - } - for (var style in this.style) { - if (this.style.hasOwnProperty(style)) { - styles += utils.hyphenate(style) + ":" + this.style[style] + ";"; - } - } - - if (styles) { - needsSpan = true; - markup += " style=\"" + utils.escape(styles) + "\""; - } - - var escaped = utils.escape(this.value); - if (needsSpan) { - markup += ">"; - markup += escaped; - markup += "</span>"; - return markup; - } else { - return escaped; - } -}; - -module.exports = { - span: span, - documentFragment: documentFragment, - symbolNode: symbolNode, -}; diff --git a/webapp/non_npm_dependencies/katex/src/environments.js b/webapp/non_npm_dependencies/katex/src/environments.js deleted file mode 100644 index f0fff42a5..000000000 --- a/webapp/non_npm_dependencies/katex/src/environments.js +++ /dev/null @@ -1,221 +0,0 @@ -/* eslint no-constant-condition:0 */ -var fontMetrics = require("./fontMetrics"); -var parseData = require("./parseData"); -var ParseError = require("./ParseError"); - -var ParseNode = parseData.ParseNode; - -/** - * Parse the body of the environment, with rows delimited by \\ and - * columns delimited by &, and create a nested list in row-major order - * with one group per cell. - */ -function parseArray(parser, result) { - var row = []; - var body = [row]; - var rowGaps = []; - while (true) { - var cell = parser.parseExpression(false, null); - row.push(new ParseNode("ordgroup", cell, parser.mode)); - var next = parser.nextToken.text; - if (next === "&") { - parser.consume(); - } else if (next === "\\end") { - break; - } else if (next === "\\\\" || next === "\\cr") { - var cr = parser.parseFunction(); - rowGaps.push(cr.value.size); - row = []; - body.push(row); - } else { - // TODO: Clean up the following hack once #385 got merged - var pos = Math.min(parser.pos + 1, parser.lexer._input.length); - throw new ParseError("Expected & or \\\\ or \\end", - parser.lexer, pos); - } - } - result.body = body; - result.rowGaps = rowGaps; - return new ParseNode(result.type, result, parser.mode); -} - -/* - * An environment definition is very similar to a function definition: - * it is declared with a name or a list of names, a set of properties - * and a handler containing the actual implementation. - * - * The properties include: - * - numArgs: The number of arguments after the \begin{name} function. - * - argTypes: (optional) Just like for a function - * - allowedInText: (optional) Whether or not the environment is allowed inside - * text mode (default false) (not enforced yet) - * - numOptionalArgs: (optional) Just like for a function - * A bare number instead of that object indicates the numArgs value. - * - * The handler function will receive two arguments - * - context: information and references provided by the parser - * - args: an array of arguments passed to \begin{name} - * The context contains the following properties: - * - envName: the name of the environment, one of the listed names. - * - parser: the parser object - * - lexer: the lexer object - * - positions: the positions associated with these arguments from args. - * The handler must return a ParseResult. - */ - -function defineEnvironment(names, props, handler) { - if (typeof names === "string") { - names = [names]; - } - if (typeof props === "number") { - props = { numArgs: props }; - } - // Set default values of environments - var data = { - numArgs: props.numArgs || 0, - argTypes: props.argTypes, - greediness: 1, - allowedInText: !!props.allowedInText, - numOptionalArgs: props.numOptionalArgs || 0, - handler: handler, - }; - for (var i = 0; i < names.length; ++i) { - module.exports[names[i]] = data; - } -} - -// Arrays are part of LaTeX, defined in lttab.dtx so its documentation -// is part of the source2e.pdf file of LaTeX2e source documentation. -defineEnvironment("array", { - numArgs: 1, -}, function(context, args) { - var colalign = args[0]; - colalign = colalign.value.map ? colalign.value : [colalign]; - var cols = colalign.map(function(node) { - var ca = node.value; - if ("lcr".indexOf(ca) !== -1) { - return { - type: "align", - align: ca, - }; - } else if (ca === "|") { - return { - type: "separator", - separator: "|", - }; - } - throw new ParseError( - "Unknown column alignment: " + node.value, - context.lexer, context.positions[1]); - }); - var res = { - type: "array", - cols: cols, - hskipBeforeAndAfter: true, // \@preamble in lttab.dtx - }; - res = parseArray(context.parser, res); - return res; -}); - -// The matrix environments of amsmath builds on the array environment -// of LaTeX, which is discussed above. -defineEnvironment([ - "matrix", - "pmatrix", - "bmatrix", - "Bmatrix", - "vmatrix", - "Vmatrix", -], { -}, function(context) { - var delimiters = { - "matrix": null, - "pmatrix": ["(", ")"], - "bmatrix": ["[", "]"], - "Bmatrix": ["\\{", "\\}"], - "vmatrix": ["|", "|"], - "Vmatrix": ["\\Vert", "\\Vert"], - }[context.envName]; - var res = { - type: "array", - hskipBeforeAndAfter: false, // \hskip -\arraycolsep in amsmath - }; - res = parseArray(context.parser, res); - if (delimiters) { - res = new ParseNode("leftright", { - body: [res], - left: delimiters[0], - right: delimiters[1], - }, context.mode); - } - return res; -}); - -// A cases environment (in amsmath.sty) is almost equivalent to -// \def\arraystretch{1.2}% -// \left\{\begin{array}{@{}l@{\quad}l@{}} … \end{array}\right. -defineEnvironment("cases", { -}, function(context) { - var res = { - type: "array", - arraystretch: 1.2, - cols: [{ - type: "align", - align: "l", - pregap: 0, - postgap: fontMetrics.metrics.quad, - }, { - type: "align", - align: "l", - pregap: 0, - postgap: 0, - }], - }; - res = parseArray(context.parser, res); - res = new ParseNode("leftright", { - body: [res], - left: "\\{", - right: ".", - }, context.mode); - return res; -}); - -// An aligned environment is like the align* environment -// except it operates within math mode. -// Note that we assume \nomallineskiplimit to be zero, -// so that \strut@ is the same as \strut. -defineEnvironment("aligned", { -}, function(context) { - var res = { - type: "array", - cols: [], - }; - res = parseArray(context.parser, res); - var emptyGroup = new ParseNode("ordgroup", [], context.mode); - var numCols = 0; - res.value.body.forEach(function(row) { - var i; - for (i = 1; i < row.length; i += 2) { - row[i].value.unshift(emptyGroup); - } - if (numCols < row.length) { - numCols = row.length; - } - }); - for (var i = 0; i < numCols; ++i) { - var align = "r"; - var pregap = 0; - if (i % 2 === 1) { - align = "l"; - } else if (i > 0) { - pregap = 2; // one \qquad between columns - } - res.value.cols[i] = { - type: "align", - align: align, - pregap: pregap, - postgap: 0, - }; - } - return res; -}); diff --git a/webapp/non_npm_dependencies/katex/src/fontMetrics.js b/webapp/non_npm_dependencies/katex/src/fontMetrics.js deleted file mode 100644 index db9e44bfa..000000000 --- a/webapp/non_npm_dependencies/katex/src/fontMetrics.js +++ /dev/null @@ -1,147 +0,0 @@ -/* eslint no-unused-vars:0 */ - -var Style = require("./Style"); - -/** - * This file contains metrics regarding fonts and individual symbols. The sigma - * and xi variables, as well as the metricMap map contain data extracted from - * TeX, TeX font metrics, and the TTF files. These data are then exposed via the - * `metrics` variable and the getCharacterMetrics function. - */ - -// These font metrics are extracted from TeX by using -// \font\a=cmmi10 -// \showthe\fontdimenX\a -// where X is the corresponding variable number. These correspond to the font -// parameters of the symbol fonts. In TeX, there are actually three sets of -// dimensions, one for each of textstyle, scriptstyle, and scriptscriptstyle, -// but we only use the textstyle ones, and scale certain dimensions accordingly. -// See the TeXbook, page 441. -var sigma1 = 0.025; -var sigma2 = 0; -var sigma3 = 0; -var sigma4 = 0; -var sigma5 = 0.431; -var sigma6 = 1; -var sigma7 = 0; -var sigma8 = 0.677; -var sigma9 = 0.394; -var sigma10 = 0.444; -var sigma11 = 0.686; -var sigma12 = 0.345; -var sigma13 = 0.413; -var sigma14 = 0.363; -var sigma15 = 0.289; -var sigma16 = 0.150; -var sigma17 = 0.247; -var sigma18 = 0.386; -var sigma19 = 0.050; -var sigma20 = 2.390; -var sigma21 = 1.01; -var sigma21Script = 0.81; -var sigma21ScriptScript = 0.71; -var sigma22 = 0.250; - -// These font metrics are extracted from TeX by using -// \font\a=cmex10 -// \showthe\fontdimenX\a -// where X is the corresponding variable number. These correspond to the font -// parameters of the extension fonts (family 3). See the TeXbook, page 441. -var xi1 = 0; -var xi2 = 0; -var xi3 = 0; -var xi4 = 0; -var xi5 = 0.431; -var xi6 = 1; -var xi7 = 0; -var xi8 = 0.04; -var xi9 = 0.111; -var xi10 = 0.166; -var xi11 = 0.2; -var xi12 = 0.6; -var xi13 = 0.1; - -// This value determines how large a pt is, for metrics which are defined in -// terms of pts. -// This value is also used in katex.less; if you change it make sure the values -// match. -var ptPerEm = 10.0; - -// The space between adjacent `|` columns in an array definition. From -// `\showthe\doublerulesep` in LaTeX. -var doubleRuleSep = 2.0 / ptPerEm; - -/** - * This is just a mapping from common names to real metrics - */ -var metrics = { - xHeight: sigma5, - quad: sigma6, - num1: sigma8, - num2: sigma9, - num3: sigma10, - denom1: sigma11, - denom2: sigma12, - sup1: sigma13, - sup2: sigma14, - sup3: sigma15, - sub1: sigma16, - sub2: sigma17, - supDrop: sigma18, - subDrop: sigma19, - axisHeight: sigma22, - defaultRuleThickness: xi8, - bigOpSpacing1: xi9, - bigOpSpacing2: xi10, - bigOpSpacing3: xi11, - bigOpSpacing4: xi12, - bigOpSpacing5: xi13, - ptPerEm: ptPerEm, - emPerEx: sigma5 / sigma6, - doubleRuleSep: doubleRuleSep, - - // TODO(alpert): Missing parallel structure here. We should probably add - // style-specific metrics for all of these. - delim1: sigma20, - getDelim2: function(style) { - if (style.size === Style.TEXT.size) { - return sigma21; - } else if (style.size === Style.SCRIPT.size) { - return sigma21Script; - } else if (style.size === Style.SCRIPTSCRIPT.size) { - return sigma21ScriptScript; - } - throw new Error("Unexpected style size: " + style.size); - }, -}; - -// This map contains a mapping from font name and character code to character -// metrics, including height, depth, italic correction, and skew (kern from the -// character to the corresponding \skewchar) -// This map is generated via `make metrics`. It should not be changed manually. -var metricMap = require("./fontMetricsData"); - -/** - * This function is a convenience function for looking up information in the - * metricMap table. It takes a character as a string, and a style. - * - * Note: the `width` property may be undefined if fontMetricsData.js wasn't - * built using `Make extended_metrics`. - */ -var getCharacterMetrics = function(character, style) { - var metrics = metricMap[style][character.charCodeAt(0)]; - if (metrics) { - return { - depth: metrics[0], - height: metrics[1], - italic: metrics[2], - skew: metrics[3], - width: metrics[4], - }; - } -}; - -module.exports = { - metrics: metrics, - getCharacterMetrics: getCharacterMetrics, -}; diff --git a/webapp/non_npm_dependencies/katex/src/fontMetricsData.js b/webapp/non_npm_dependencies/katex/src/fontMetricsData.js deleted file mode 100644 index 957f55b87..000000000 --- a/webapp/non_npm_dependencies/katex/src/fontMetricsData.js +++ /dev/null @@ -1,1752 +0,0 @@ -module.exports = { - "AMS-Regular": { - "65": [0, 0.68889, 0, 0], - "66": [0, 0.68889, 0, 0], - "67": [0, 0.68889, 0, 0], - "68": [0, 0.68889, 0, 0], - "69": [0, 0.68889, 0, 0], - "70": [0, 0.68889, 0, 0], - "71": [0, 0.68889, 0, 0], - "72": [0, 0.68889, 0, 0], - "73": [0, 0.68889, 0, 0], - "74": [0.16667, 0.68889, 0, 0], - "75": [0, 0.68889, 0, 0], - "76": [0, 0.68889, 0, 0], - "77": [0, 0.68889, 0, 0], - "78": [0, 0.68889, 0, 0], - "79": [0.16667, 0.68889, 0, 0], - "80": [0, 0.68889, 0, 0], - "81": [0.16667, 0.68889, 0, 0], - "82": [0, 0.68889, 0, 0], - "83": [0, 0.68889, 0, 0], - "84": [0, 0.68889, 0, 0], - "85": [0, 0.68889, 0, 0], - "86": [0, 0.68889, 0, 0], - "87": [0, 0.68889, 0, 0], - "88": [0, 0.68889, 0, 0], - "89": [0, 0.68889, 0, 0], - "90": [0, 0.68889, 0, 0], - "107": [0, 0.68889, 0, 0], - "165": [0, 0.675, 0.025, 0], - "174": [0.15559, 0.69224, 0, 0], - "240": [0, 0.68889, 0, 0], - "295": [0, 0.68889, 0, 0], - "710": [0, 0.825, 0, 0], - "732": [0, 0.9, 0, 0], - "770": [0, 0.825, 0, 0], - "771": [0, 0.9, 0, 0], - "989": [0.08167, 0.58167, 0, 0], - "1008": [0, 0.43056, 0.04028, 0], - "8245": [0, 0.54986, 0, 0], - "8463": [0, 0.68889, 0, 0], - "8487": [0, 0.68889, 0, 0], - "8498": [0, 0.68889, 0, 0], - 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"8829": [0.13667, 0.63667, 0, 0], - "8830": [0.22958, 0.72958, 0, 0], - "8831": [0.22958, 0.72958, 0, 0], - "8832": [0.20576, 0.70576, 0, 0], - "8833": [0.20576, 0.70576, 0, 0], - "8840": [0.30274, 0.79383, 0, 0], - "8841": [0.30274, 0.79383, 0, 0], - "8842": [0.13597, 0.63597, 0, 0], - "8843": [0.13597, 0.63597, 0, 0], - "8847": [0.03517, 0.54986, 0, 0], - "8848": [0.03517, 0.54986, 0, 0], - "8858": [0.08198, 0.58198, 0, 0], - "8859": [0.08198, 0.58198, 0, 0], - "8861": [0.08198, 0.58198, 0, 0], - "8862": [0, 0.675, 0, 0], - "8863": [0, 0.675, 0, 0], - "8864": [0, 0.675, 0, 0], - "8865": [0, 0.675, 0, 0], - "8872": [0, 0.69224, 0, 0], - "8873": [0, 0.69224, 0, 0], - "8874": [0, 0.69224, 0, 0], - "8876": [0, 0.68889, 0, 0], - "8877": [0, 0.68889, 0, 0], - "8878": [0, 0.68889, 0, 0], - "8879": [0, 0.68889, 0, 0], - "8882": [0.03517, 0.54986, 0, 0], - "8883": [0.03517, 0.54986, 0, 0], - "8884": [0.13667, 0.63667, 0, 0], - "8885": [0.13667, 0.63667, 0, 0], - "8888": [0, 0.54986, 0, 0], - 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-/* This file contains a list of functions that we parse, identified by - * the calls to defineFunction. - * - * The first argument to defineFunction is a single name or a list of names. - * All functions named in such a list will share a single implementation. - * - * Each declared function can have associated properties, which - * include the following: - * - * - numArgs: The number of arguments the function takes. - * If this is the only property, it can be passed as a number - * instead of an element of a properties object. - * - argTypes: (optional) An array corresponding to each argument of the - * function, giving the type of argument that should be parsed. Its - * length should be equal to `numArgs + numOptionalArgs`. Valid - * types: - * - "size": A size-like thing, such as "1em" or "5ex" - * - "color": An html color, like "#abc" or "blue" - * - "original": The same type as the environment that the - * function being parsed is in (e.g. used for the - * bodies of functions like \color where the first - * argument is special and the second argument is - * parsed normally) - * Other possible types (probably shouldn't be used) - * - "text": Text-like (e.g. \text) - * - "math": Normal math - * If undefined, this will be treated as an appropriate length - * array of "original" strings - * - greediness: (optional) The greediness of the function to use ungrouped - * arguments. - * - * E.g. if you have an expression - * \sqrt \frac 1 2 - * since \frac has greediness=2 vs \sqrt's greediness=1, \frac - * will use the two arguments '1' and '2' as its two arguments, - * then that whole function will be used as the argument to - * \sqrt. On the other hand, the expressions - * \frac \frac 1 2 3 - * and - * \frac \sqrt 1 2 - * will fail because \frac and \frac have equal greediness - * and \sqrt has a lower greediness than \frac respectively. To - * make these parse, we would have to change them to: - * \frac {\frac 1 2} 3 - * and - * \frac {\sqrt 1} 2 - * - * The default value is `1` - * - allowedInText: (optional) Whether or not the function is allowed inside - * text mode (default false) - * - numOptionalArgs: (optional) The number of optional arguments the function - * should parse. If the optional arguments aren't found, - * `null` will be passed to the handler in their place. - * (default 0) - * - * The last argument is that implementation, the handler for the function(s). - * It is called to handle these functions and their arguments. - * It receives two arguments: - * - context contains information and references provided by the parser - * - args is an array of arguments obtained from TeX input - * The context contains the following properties: - * - funcName: the text (i.e. name) of the function, including \ - * - parser: the parser object - * - lexer: the lexer object - * - positions: the positions in the overall string of the function - * and the arguments. - * The latter three should only be used to produce error messages. - * - * The function should return an object with the following keys: - * - type: The type of element that this is. This is then used in - * buildHTML/buildMathML to determine which function - * should be called to build this node into a DOM node - * Any other data can be added to the object, which will be passed - * in to the function in buildHTML/buildMathML as `group.value`. - */ - -function defineFunction(names, props, handler) { - if (typeof names === "string") { - names = [names]; - } - if (typeof props === "number") { - props = { numArgs: props }; - } - // Set default values of functions - var data = { - numArgs: props.numArgs, - argTypes: props.argTypes, - greediness: (props.greediness === undefined) ? 1 : props.greediness, - allowedInText: !!props.allowedInText, - numOptionalArgs: props.numOptionalArgs || 0, - handler: handler, - }; - for (var i = 0; i < names.length; ++i) { - module.exports[names[i]] = data; - } -} - -// A normal square root -defineFunction("\\sqrt", { - numArgs: 1, - numOptionalArgs: 1, -}, function(context, args) { - var index = args[0]; - var body = args[1]; - return { - type: "sqrt", - body: body, - index: index, - }; -}); - -// Some non-mathy text -defineFunction("\\text", { - numArgs: 1, - argTypes: ["text"], - greediness: 2, -}, function(context, args) { - var body = args[0]; - // Since the corresponding buildHTML/buildMathML function expects a - // list of elements, we normalize for different kinds of arguments - // TODO(emily): maybe this should be done somewhere else - var inner; - if (body.type === "ordgroup") { - inner = body.value; - } else { - inner = [body]; - } - - return { - type: "text", - body: inner, - }; -}); - -// A two-argument custom color -defineFunction("\\color", { - numArgs: 2, - allowedInText: true, - greediness: 3, - argTypes: ["color", "original"], -}, function(context, args) { - var color = args[0]; - var body = args[1]; - // Normalize the different kinds of bodies (see \text above) - var inner; - if (body.type === "ordgroup") { - inner = body.value; - } else { - inner = [body]; - } - - return { - type: "color", - color: color.value, - value: inner, - }; -}); - -// An overline -defineFunction("\\overline", { - numArgs: 1, -}, function(context, args) { - var body = args[0]; - return { - type: "overline", - body: body, - }; -}); - -// A box of the width and height -defineFunction("\\rule", { - numArgs: 2, - numOptionalArgs: 1, - argTypes: ["size", "size", "size"], -}, function(context, args) { - var shift = args[0]; - var width = args[1]; - var height = args[2]; - return { - type: "rule", - shift: shift && shift.value, - width: width.value, - height: height.value, - }; -}); - -// A KaTeX logo -defineFunction("\\KaTeX", { - numArgs: 0, -}, function(context) { - return { - type: "katex", - }; -}); - -defineFunction("\\phantom", { - numArgs: 1, -}, function(context, args) { - var body = args[0]; - var inner; - if (body.type === "ordgroup") { - inner = body.value; - } else { - inner = [body]; - } - - return { - type: "phantom", - value: inner, - }; -}); - -// Extra data needed for the delimiter handler down below -var delimiterSizes = { - "\\bigl" : {type: "open", size: 1}, - "\\Bigl" : {type: "open", size: 2}, - "\\biggl": {type: "open", size: 3}, - "\\Biggl": {type: "open", size: 4}, - "\\bigr" : {type: "close", size: 1}, - "\\Bigr" : {type: "close", size: 2}, - "\\biggr": {type: "close", size: 3}, - "\\Biggr": {type: "close", size: 4}, - "\\bigm" : {type: "rel", size: 1}, - "\\Bigm" : {type: "rel", size: 2}, - "\\biggm": {type: "rel", size: 3}, - "\\Biggm": {type: "rel", size: 4}, - "\\big" : {type: "textord", size: 1}, - "\\Big" : {type: "textord", size: 2}, - "\\bigg" : {type: "textord", size: 3}, - "\\Bigg" : {type: "textord", size: 4}, -}; - -var delimiters = [ - "(", ")", "[", "\\lbrack", "]", "\\rbrack", - "\\{", "\\lbrace", "\\}", "\\rbrace", - "\\lfloor", "\\rfloor", "\\lceil", "\\rceil", - "<", ">", "\\langle", "\\rangle", "\\lt", "\\gt", - "\\lvert", "\\rvert", "\\lVert", "\\rVert", - "\\lgroup", "\\rgroup", "\\lmoustache", "\\rmoustache", - "/", "\\backslash", - "|", "\\vert", "\\|", "\\Vert", - "\\uparrow", "\\Uparrow", - "\\downarrow", "\\Downarrow", - "\\updownarrow", "\\Updownarrow", - ".", -]; - -var fontAliases = { - "\\Bbb": "\\mathbb", - "\\bold": "\\mathbf", - "\\frak": "\\mathfrak", -}; - -// Single-argument color functions -defineFunction([ - "\\blue", "\\orange", "\\pink", "\\red", - "\\green", "\\gray", "\\purple", - "\\blueA", "\\blueB", "\\blueC", "\\blueD", "\\blueE", - "\\tealA", "\\tealB", "\\tealC", "\\tealD", "\\tealE", - "\\greenA", "\\greenB", "\\greenC", "\\greenD", "\\greenE", - "\\goldA", "\\goldB", "\\goldC", "\\goldD", "\\goldE", - "\\redA", "\\redB", "\\redC", "\\redD", "\\redE", - "\\maroonA", "\\maroonB", "\\maroonC", "\\maroonD", "\\maroonE", - "\\purpleA", "\\purpleB", "\\purpleC", "\\purpleD", "\\purpleE", - "\\mintA", "\\mintB", "\\mintC", - "\\grayA", "\\grayB", "\\grayC", "\\grayD", "\\grayE", - "\\grayF", "\\grayG", "\\grayH", "\\grayI", - "\\kaBlue", "\\kaGreen", -], { - numArgs: 1, - allowedInText: true, - greediness: 3, -}, function(context, args) { - var body = args[0]; - var atoms; - if (body.type === "ordgroup") { - atoms = body.value; - } else { - atoms = [body]; - } - - return { - type: "color", - color: "katex-" + context.funcName.slice(1), - value: atoms, - }; -}); - -// There are 2 flags for operators; whether they produce limits in -// displaystyle, and whether they are symbols and should grow in -// displaystyle. These four groups cover the four possible choices. - -// No limits, not symbols -defineFunction([ - "\\arcsin", "\\arccos", "\\arctan", "\\arg", "\\cos", "\\cosh", - "\\cot", "\\coth", "\\csc", "\\deg", "\\dim", "\\exp", "\\hom", - "\\ker", "\\lg", "\\ln", "\\log", "\\sec", "\\sin", "\\sinh", - "\\tan", "\\tanh", -], { - numArgs: 0, -}, function(context) { - return { - type: "op", - limits: false, - symbol: false, - body: context.funcName, - }; -}); - -// Limits, not symbols -defineFunction([ - "\\det", "\\gcd", "\\inf", "\\lim", "\\liminf", "\\limsup", "\\max", - "\\min", "\\Pr", "\\sup", -], { - numArgs: 0, -}, function(context) { - return { - type: "op", - limits: true, - symbol: false, - body: context.funcName, - }; -}); - -// No limits, symbols -defineFunction([ - "\\int", "\\iint", "\\iiint", "\\oint", -], { - numArgs: 0, -}, function(context) { - return { - type: "op", - limits: false, - symbol: true, - body: context.funcName, - }; -}); - -// Limits, symbols -defineFunction([ - "\\coprod", "\\bigvee", "\\bigwedge", "\\biguplus", "\\bigcap", - "\\bigcup", "\\intop", "\\prod", "\\sum", "\\bigotimes", - "\\bigoplus", "\\bigodot", "\\bigsqcup", "\\smallint", -], { - numArgs: 0, -}, function(context) { - return { - type: "op", - limits: true, - symbol: true, - body: context.funcName, - }; -}); - -// Fractions -defineFunction([ - "\\dfrac", "\\frac", "\\tfrac", - "\\dbinom", "\\binom", "\\tbinom", -], { - numArgs: 2, - greediness: 2, -}, function(context, args) { - var numer = args[0]; - var denom = args[1]; - var hasBarLine; - var leftDelim = null; - var rightDelim = null; - var size = "auto"; - - switch (context.funcName) { - case "\\dfrac": - case "\\frac": - case "\\tfrac": - hasBarLine = true; - break; - case "\\dbinom": - case "\\binom": - case "\\tbinom": - hasBarLine = false; - leftDelim = "("; - rightDelim = ")"; - break; - default: - throw new Error("Unrecognized genfrac command"); - } - - switch (context.funcName) { - case "\\dfrac": - case "\\dbinom": - size = "display"; - break; - case "\\tfrac": - case "\\tbinom": - size = "text"; - break; - } - - return { - type: "genfrac", - numer: numer, - denom: denom, - hasBarLine: hasBarLine, - leftDelim: leftDelim, - rightDelim: rightDelim, - size: size, - }; -}); - -// Left and right overlap functions -defineFunction(["\\llap", "\\rlap"], { - numArgs: 1, - allowedInText: true, -}, function(context, args) { - var body = args[0]; - return { - type: context.funcName.slice(1), - body: body, - }; -}); - -// Delimiter functions -defineFunction([ - "\\bigl", "\\Bigl", "\\biggl", "\\Biggl", - "\\bigr", "\\Bigr", "\\biggr", "\\Biggr", - "\\bigm", "\\Bigm", "\\biggm", "\\Biggm", - "\\big", "\\Big", "\\bigg", "\\Bigg", - "\\left", "\\right", -], { - numArgs: 1, -}, function(context, args) { - var delim = args[0]; - if (!utils.contains(delimiters, delim.value)) { - throw new ParseError( - "Invalid delimiter: '" + delim.value + "' after '" + - context.funcName + "'", - context.lexer, context.positions[1]); - } - - // \left and \right are caught somewhere in Parser.js, which is - // why this data doesn't match what is in buildHTML. - if (context.funcName === "\\left" || context.funcName === "\\right") { - return { - type: "leftright", - value: delim.value, - }; - } else { - return { - type: "delimsizing", - size: delimiterSizes[context.funcName].size, - delimType: delimiterSizes[context.funcName].type, - value: delim.value, - }; - } -}); - -// Sizing functions (handled in Parser.js explicitly, hence no handler) -defineFunction([ - "\\tiny", "\\scriptsize", "\\footnotesize", "\\small", - "\\normalsize", "\\large", "\\Large", "\\LARGE", "\\huge", "\\Huge", -], 0, null); - -// Style changing functions (handled in Parser.js explicitly, hence no -// handler) -defineFunction([ - "\\displaystyle", "\\textstyle", "\\scriptstyle", - "\\scriptscriptstyle", -], 0, null); - -defineFunction([ - // styles - "\\mathrm", "\\mathit", "\\mathbf", - - // families - "\\mathbb", "\\mathcal", "\\mathfrak", "\\mathscr", "\\mathsf", - "\\mathtt", - - // aliases - "\\Bbb", "\\bold", "\\frak", -], { - numArgs: 1, - greediness: 2, -}, function(context, args) { - var body = args[0]; - var func = context.funcName; - if (func in fontAliases) { - func = fontAliases[func]; - } - return { - type: "font", - font: func.slice(1), - body: body, - }; -}); - -// Accents -defineFunction([ - "\\acute", "\\grave", "\\ddot", "\\tilde", "\\bar", "\\breve", - "\\check", "\\hat", "\\vec", "\\dot", - // We don't support expanding accents yet - // "\\widetilde", "\\widehat" -], { - numArgs: 1, -}, function(context, args) { - var base = args[0]; - return { - type: "accent", - accent: context.funcName, - base: base, - }; -}); - -// Infix generalized fractions -defineFunction(["\\over", "\\choose"], { - numArgs: 0, -}, function(context) { - var replaceWith; - switch (context.funcName) { - case "\\over": - replaceWith = "\\frac"; - break; - case "\\choose": - replaceWith = "\\binom"; - break; - default: - throw new Error("Unrecognized infix genfrac command"); - } - return { - type: "infix", - replaceWith: replaceWith, - }; -}); - -// Row breaks for aligned data -defineFunction(["\\\\", "\\cr"], { - numArgs: 0, - numOptionalArgs: 1, - argTypes: ["size"], -}, function(context, args) { - var size = args[0]; - return { - type: "cr", - size: size, - }; -}); - -// Environment delimiters -defineFunction(["\\begin", "\\end"], { - numArgs: 1, - argTypes: ["text"], -}, function(context, args) { - var nameGroup = args[0]; - if (nameGroup.type !== "ordgroup") { - throw new ParseError( - "Invalid environment name", - context.lexer, context.positions[1]); - } - var name = ""; - for (var i = 0; i < nameGroup.value.length; ++i) { - name += nameGroup.value[i].value; - } - return { - type: "environment", - name: name, - namepos: context.positions[1], - }; -}); diff --git a/webapp/non_npm_dependencies/katex/src/mathMLTree.js b/webapp/non_npm_dependencies/katex/src/mathMLTree.js deleted file mode 100644 index 86e63562c..000000000 --- a/webapp/non_npm_dependencies/katex/src/mathMLTree.js +++ /dev/null @@ -1,102 +0,0 @@ -/** - * These objects store data about MathML nodes. This is the MathML equivalent - * of the types in domTree.js. Since MathML handles its own rendering, and - * since we're mainly using MathML to improve accessibility, we don't manage - * any of the styling state that the plain DOM nodes do. - * - * The `toNode` and `toMarkup` functions work simlarly to how they do in - * domTree.js, creating namespaced DOM nodes and HTML text markup respectively. - */ - -var utils = require("./utils"); - -/** - * This node represents a general purpose MathML node of any type. The - * constructor requires the type of node to create (for example, `"mo"` or - * `"mspace"`, corresponding to `<mo>` and `<mspace>` tags). - */ -function MathNode(type, children) { - this.type = type; - this.attributes = {}; - this.children = children || []; -} - -/** - * Sets an attribute on a MathML node. MathML depends on attributes to convey a - * semantic content, so this is used heavily. - */ -MathNode.prototype.setAttribute = function(name, value) { - this.attributes[name] = value; -}; - -/** - * Converts the math node into a MathML-namespaced DOM element. - */ -MathNode.prototype.toNode = function() { - var node = document.createElementNS( - "http://www.w3.org/1998/Math/MathML", this.type); - - for (var attr in this.attributes) { - if (Object.prototype.hasOwnProperty.call(this.attributes, attr)) { - node.setAttribute(attr, this.attributes[attr]); - } - } - - for (var i = 0; i < this.children.length; i++) { - node.appendChild(this.children[i].toNode()); - } - - return node; -}; - -/** - * Converts the math node into an HTML markup string. - */ -MathNode.prototype.toMarkup = function() { - var markup = "<" + this.type; - - // Add the attributes - for (var attr in this.attributes) { - if (Object.prototype.hasOwnProperty.call(this.attributes, attr)) { - markup += " " + attr + "=\""; - markup += utils.escape(this.attributes[attr]); - markup += "\""; - } - } - - markup += ">"; - - for (var i = 0; i < this.children.length; i++) { - markup += this.children[i].toMarkup(); - } - - markup += "</" + this.type + ">"; - - return markup; -}; - -/** - * This node represents a piece of text. - */ -function TextNode(text) { - this.text = text; -} - -/** - * Converts the text node into a DOM text node. - */ -TextNode.prototype.toNode = function() { - return document.createTextNode(this.text); -}; - -/** - * Converts the text node into HTML markup (which is just the text itself). - */ -TextNode.prototype.toMarkup = function() { - return utils.escape(this.text); -}; - -module.exports = { - MathNode: MathNode, - TextNode: TextNode, -}; diff --git a/webapp/non_npm_dependencies/katex/src/parseData.js b/webapp/non_npm_dependencies/katex/src/parseData.js deleted file mode 100644 index be8dd67f4..000000000 --- a/webapp/non_npm_dependencies/katex/src/parseData.js +++ /dev/null @@ -1,13 +0,0 @@ -/** - * The resulting parse tree nodes of the parse tree. - */ -function ParseNode(type, value, mode) { - this.type = type; - this.value = value; - this.mode = mode; -} - -module.exports = { - ParseNode: ParseNode, -}; - diff --git a/webapp/non_npm_dependencies/katex/src/parseTree.js b/webapp/non_npm_dependencies/katex/src/parseTree.js deleted file mode 100644 index 3adba8248..000000000 --- a/webapp/non_npm_dependencies/katex/src/parseTree.js +++ /dev/null @@ -1,17 +0,0 @@ -/** - * Provides a single function for parsing an expression using a Parser - * TODO(emily): Remove this - */ - -var Parser = require("./Parser"); - -/** - * Parses an expression using a Parser, then returns the parsed result. - */ -var parseTree = function(toParse, settings) { - var parser = new Parser(toParse, settings); - - return parser.parse(); -}; - -module.exports = parseTree; diff --git a/webapp/non_npm_dependencies/katex/src/symbols.js b/webapp/non_npm_dependencies/katex/src/symbols.js deleted file mode 100644 index 6170cb5e7..000000000 --- a/webapp/non_npm_dependencies/katex/src/symbols.js +++ /dev/null @@ -1,620 +0,0 @@ -/** - * This file holds a list of all no-argument functions and single-character - * symbols (like 'a' or ';'). - * - * For each of the symbols, there are three properties they can have: - * - font (required): the font to be used for this symbol. Either "main" (the - normal font), or "ams" (the ams fonts). - * - group (required): the ParseNode group type the symbol should have (i.e. - "textord", "mathord", etc). - See https://github.com/Khan/KaTeX/wiki/Examining-TeX#group-types - * - replace: the character that this symbol or function should be - * replaced with (i.e. "\phi" has a replace value of "\u03d5", the phi - * character in the main font). - * - * The outermost map in the table indicates what mode the symbols should be - * accepted in (e.g. "math" or "text"). - */ - -module.exports = { - math: {}, - text: {}, -}; - -function defineSymbol(mode, font, group, replace, name) { - module.exports[mode][name] = { - font: font, - group: group, - replace: replace, - }; -} - -// Some abbreviations for commonly used strings. -// This helps minify the code, and also spotting typos using jshint. - -// modes: -var math = "math"; -var text = "text"; - -// fonts: -var main = "main"; -var ams = "ams"; - -// groups: -var accent = "accent"; -var bin = "bin"; -var close = "close"; -var inner = "inner"; -var mathord = "mathord"; -var op = "op"; -var open = "open"; -var punct = "punct"; -var rel = "rel"; -var spacing = "spacing"; -var textord = "textord"; - -// Now comes the symbol table - -// Relation Symbols -defineSymbol(math, main, rel, "\u2261", "\\equiv"); -defineSymbol(math, main, rel, "\u227a", "\\prec"); -defineSymbol(math, main, rel, "\u227b", "\\succ"); -defineSymbol(math, main, rel, "\u223c", "\\sim"); -defineSymbol(math, main, rel, "\u22a5", "\\perp"); -defineSymbol(math, main, rel, "\u2aaf", "\\preceq"); -defineSymbol(math, main, rel, "\u2ab0", "\\succeq"); -defineSymbol(math, main, rel, "\u2243", "\\simeq"); -defineSymbol(math, main, rel, "\u2223", "\\mid"); -defineSymbol(math, main, rel, "\u226a", "\\ll"); -defineSymbol(math, main, rel, "\u226b", "\\gg"); -defineSymbol(math, main, rel, "\u224d", "\\asymp"); -defineSymbol(math, main, rel, "\u2225", "\\parallel"); -defineSymbol(math, main, rel, "\u22c8", "\\bowtie"); -defineSymbol(math, main, rel, "\u2323", "\\smile"); -defineSymbol(math, main, rel, "\u2291", "\\sqsubseteq"); -defineSymbol(math, main, rel, "\u2292", "\\sqsupseteq"); -defineSymbol(math, main, rel, "\u2250", "\\doteq"); -defineSymbol(math, main, rel, "\u2322", "\\frown"); -defineSymbol(math, main, rel, "\u220b", "\\ni"); -defineSymbol(math, main, rel, "\u221d", "\\propto"); -defineSymbol(math, main, rel, "\u22a2", "\\vdash"); -defineSymbol(math, main, rel, "\u22a3", "\\dashv"); -defineSymbol(math, main, rel, "\u220b", "\\owns"); - -// Punctuation -defineSymbol(math, main, punct, "\u002e", "\\ldotp"); -defineSymbol(math, main, punct, "\u22c5", "\\cdotp"); - -// Misc Symbols -defineSymbol(math, main, textord, "\u0023", "\\#"); -defineSymbol(math, main, textord, "\u0026", "\\&"); -defineSymbol(math, main, textord, "\u2135", "\\aleph"); -defineSymbol(math, main, textord, "\u2200", "\\forall"); -defineSymbol(math, main, textord, "\u210f", "\\hbar"); -defineSymbol(math, main, textord, "\u2203", "\\exists"); -defineSymbol(math, main, textord, "\u2207", "\\nabla"); -defineSymbol(math, main, textord, "\u266d", "\\flat"); -defineSymbol(math, main, textord, "\u2113", "\\ell"); -defineSymbol(math, main, textord, "\u266e", "\\natural"); -defineSymbol(math, main, textord, "\u2663", "\\clubsuit"); -defineSymbol(math, main, textord, "\u2118", "\\wp"); -defineSymbol(math, main, textord, "\u266f", "\\sharp"); -defineSymbol(math, main, textord, "\u2662", "\\diamondsuit"); -defineSymbol(math, main, textord, "\u211c", "\\Re"); -defineSymbol(math, main, textord, "\u2661", "\\heartsuit"); -defineSymbol(math, main, textord, "\u2111", "\\Im"); -defineSymbol(math, main, textord, "\u2660", "\\spadesuit"); - -// Math and Text -defineSymbol(math, main, textord, "\u2020", "\\dag"); -defineSymbol(math, main, textord, "\u2021", "\\ddag"); - -// Large Delimiters -defineSymbol(math, main, close, "\u23b1", "\\rmoustache"); -defineSymbol(math, main, open, "\u23b0", "\\lmoustache"); -defineSymbol(math, main, close, "\u27ef", "\\rgroup"); -defineSymbol(math, main, open, "\u27ee", "\\lgroup"); - -// Binary Operators -defineSymbol(math, main, bin, "\u2213", "\\mp"); -defineSymbol(math, main, bin, "\u2296", "\\ominus"); -defineSymbol(math, main, bin, "\u228e", "\\uplus"); -defineSymbol(math, main, bin, "\u2293", "\\sqcap"); -defineSymbol(math, main, bin, "\u2217", "\\ast"); -defineSymbol(math, main, bin, "\u2294", "\\sqcup"); -defineSymbol(math, main, bin, "\u25ef", "\\bigcirc"); -defineSymbol(math, main, bin, "\u2219", "\\bullet"); -defineSymbol(math, main, bin, "\u2021", "\\ddagger"); -defineSymbol(math, main, bin, "\u2240", "\\wr"); -defineSymbol(math, main, bin, "\u2a3f", "\\amalg"); - -// Arrow Symbols -defineSymbol(math, main, rel, "\u27f5", "\\longleftarrow"); -defineSymbol(math, main, rel, "\u21d0", "\\Leftarrow"); -defineSymbol(math, main, rel, "\u27f8", "\\Longleftarrow"); -defineSymbol(math, main, rel, "\u27f6", "\\longrightarrow"); -defineSymbol(math, main, rel, "\u21d2", "\\Rightarrow"); -defineSymbol(math, main, rel, "\u27f9", "\\Longrightarrow"); -defineSymbol(math, main, rel, "\u2194", "\\leftrightarrow"); -defineSymbol(math, main, rel, "\u27f7", "\\longleftrightarrow"); -defineSymbol(math, main, rel, "\u21d4", "\\Leftrightarrow"); -defineSymbol(math, main, rel, "\u27fa", "\\Longleftrightarrow"); -defineSymbol(math, main, rel, "\u21a6", "\\mapsto"); -defineSymbol(math, main, rel, "\u27fc", "\\longmapsto"); -defineSymbol(math, main, rel, "\u2197", "\\nearrow"); -defineSymbol(math, main, rel, "\u21a9", "\\hookleftarrow"); -defineSymbol(math, main, rel, "\u21aa", "\\hookrightarrow"); -defineSymbol(math, main, rel, "\u2198", "\\searrow"); -defineSymbol(math, main, rel, "\u21bc", "\\leftharpoonup"); -defineSymbol(math, main, rel, "\u21c0", "\\rightharpoonup"); -defineSymbol(math, main, rel, "\u2199", "\\swarrow"); -defineSymbol(math, main, rel, "\u21bd", "\\leftharpoondown"); -defineSymbol(math, main, rel, "\u21c1", "\\rightharpoondown"); -defineSymbol(math, main, rel, "\u2196", "\\nwarrow"); -defineSymbol(math, main, rel, "\u21cc", "\\rightleftharpoons"); - -// AMS Negated Binary Relations -defineSymbol(math, ams, rel, "\u226e", "\\nless"); -defineSymbol(math, ams, rel, "\ue010", "\\nleqslant"); -defineSymbol(math, ams, rel, "\ue011", "\\nleqq"); -defineSymbol(math, ams, rel, "\u2a87", "\\lneq"); -defineSymbol(math, ams, rel, "\u2268", "\\lneqq"); -defineSymbol(math, ams, rel, "\ue00c", "\\lvertneqq"); -defineSymbol(math, ams, rel, "\u22e6", "\\lnsim"); -defineSymbol(math, ams, rel, "\u2a89", "\\lnapprox"); -defineSymbol(math, ams, rel, "\u2280", "\\nprec"); -defineSymbol(math, ams, rel, "\u22e0", "\\npreceq"); -defineSymbol(math, ams, rel, "\u22e8", "\\precnsim"); -defineSymbol(math, ams, rel, "\u2ab9", "\\precnapprox"); -defineSymbol(math, ams, rel, "\u2241", "\\nsim"); -defineSymbol(math, ams, rel, "\ue006", "\\nshortmid"); -defineSymbol(math, ams, rel, "\u2224", "\\nmid"); -defineSymbol(math, ams, rel, "\u22ac", "\\nvdash"); -defineSymbol(math, ams, rel, "\u22ad", "\\nvDash"); -defineSymbol(math, ams, rel, "\u22ea", "\\ntriangleleft"); -defineSymbol(math, ams, rel, "\u22ec", "\\ntrianglelefteq"); -defineSymbol(math, ams, rel, "\u228a", "\\subsetneq"); -defineSymbol(math, ams, rel, "\ue01a", "\\varsubsetneq"); -defineSymbol(math, ams, rel, "\u2acb", "\\subsetneqq"); -defineSymbol(math, ams, rel, "\ue017", "\\varsubsetneqq"); -defineSymbol(math, ams, rel, "\u226f", "\\ngtr"); -defineSymbol(math, ams, rel, "\ue00f", "\\ngeqslant"); -defineSymbol(math, ams, rel, "\ue00e", "\\ngeqq"); -defineSymbol(math, ams, rel, "\u2a88", "\\gneq"); -defineSymbol(math, ams, rel, "\u2269", "\\gneqq"); -defineSymbol(math, ams, rel, "\ue00d", "\\gvertneqq"); -defineSymbol(math, ams, rel, "\u22e7", "\\gnsim"); -defineSymbol(math, ams, rel, "\u2a8a", "\\gnapprox"); -defineSymbol(math, ams, rel, "\u2281", "\\nsucc"); -defineSymbol(math, ams, rel, "\u22e1", "\\nsucceq"); -defineSymbol(math, ams, rel, "\u22e9", "\\succnsim"); -defineSymbol(math, ams, rel, "\u2aba", "\\succnapprox"); -defineSymbol(math, ams, rel, "\u2246", "\\ncong"); -defineSymbol(math, ams, rel, "\ue007", "\\nshortparallel"); -defineSymbol(math, ams, rel, "\u2226", "\\nparallel"); -defineSymbol(math, ams, rel, "\u22af", "\\nVDash"); -defineSymbol(math, ams, rel, "\u22eb", "\\ntriangleright"); -defineSymbol(math, ams, rel, "\u22ed", "\\ntrianglerighteq"); -defineSymbol(math, ams, rel, "\ue018", "\\nsupseteqq"); -defineSymbol(math, ams, rel, "\u228b", "\\supsetneq"); -defineSymbol(math, ams, rel, "\ue01b", "\\varsupsetneq"); -defineSymbol(math, ams, rel, "\u2acc", "\\supsetneqq"); -defineSymbol(math, ams, rel, "\ue019", "\\varsupsetneqq"); -defineSymbol(math, ams, rel, "\u22ae", "\\nVdash"); -defineSymbol(math, ams, rel, "\u2ab5", "\\precneqq"); -defineSymbol(math, ams, rel, "\u2ab6", "\\succneqq"); -defineSymbol(math, ams, rel, "\ue016", "\\nsubseteqq"); -defineSymbol(math, ams, bin, "\u22b4", "\\unlhd"); -defineSymbol(math, ams, bin, "\u22b5", "\\unrhd"); - -// AMS Negated Arrows -defineSymbol(math, ams, rel, "\u219a", "\\nleftarrow"); -defineSymbol(math, ams, rel, "\u219b", "\\nrightarrow"); -defineSymbol(math, ams, rel, "\u21cd", "\\nLeftarrow"); -defineSymbol(math, ams, rel, "\u21cf", "\\nRightarrow"); -defineSymbol(math, ams, rel, "\u21ae", "\\nleftrightarrow"); -defineSymbol(math, ams, rel, "\u21ce", "\\nLeftrightarrow"); - -// AMS Misc -defineSymbol(math, ams, rel, "\u25b3", "\\vartriangle"); -defineSymbol(math, ams, textord, "\u210f", "\\hslash"); -defineSymbol(math, ams, textord, "\u25bd", "\\triangledown"); -defineSymbol(math, ams, textord, "\u25ca", "\\lozenge"); -defineSymbol(math, ams, textord, "\u24c8", "\\circledS"); -defineSymbol(math, ams, textord, "\u00ae", "\\circledR"); -defineSymbol(math, ams, textord, "\u2221", "\\measuredangle"); -defineSymbol(math, ams, textord, "\u2204", "\\nexists"); -defineSymbol(math, ams, textord, "\u2127", "\\mho"); -defineSymbol(math, ams, textord, "\u2132", "\\Finv"); -defineSymbol(math, ams, textord, "\u2141", "\\Game"); -defineSymbol(math, ams, textord, "\u006b", "\\Bbbk"); -defineSymbol(math, ams, textord, "\u2035", "\\backprime"); -defineSymbol(math, ams, textord, "\u25b2", "\\blacktriangle"); -defineSymbol(math, ams, textord, "\u25bc", "\\blacktriangledown"); -defineSymbol(math, ams, textord, "\u25a0", "\\blacksquare"); -defineSymbol(math, ams, textord, "\u29eb", "\\blacklozenge"); -defineSymbol(math, ams, textord, "\u2605", "\\bigstar"); -defineSymbol(math, ams, textord, "\u2222", "\\sphericalangle"); -defineSymbol(math, ams, textord, "\u2201", "\\complement"); -defineSymbol(math, ams, textord, "\u00f0", "\\eth"); -defineSymbol(math, ams, textord, "\u2571", "\\diagup"); -defineSymbol(math, ams, textord, "\u2572", "\\diagdown"); -defineSymbol(math, ams, textord, "\u25a1", "\\square"); -defineSymbol(math, ams, textord, "\u25a1", "\\Box"); -defineSymbol(math, ams, textord, "\u25ca", "\\Diamond"); -defineSymbol(math, ams, textord, "\u00a5", "\\yen"); -defineSymbol(math, ams, textord, "\u2713", "\\checkmark"); - -// AMS Hebrew -defineSymbol(math, ams, textord, "\u2136", "\\beth"); -defineSymbol(math, ams, textord, "\u2138", "\\daleth"); -defineSymbol(math, ams, textord, "\u2137", "\\gimel"); - -// AMS Greek -defineSymbol(math, ams, textord, "\u03dd", "\\digamma"); -defineSymbol(math, ams, textord, "\u03f0", "\\varkappa"); - -// AMS Delimiters -defineSymbol(math, ams, open, "\u250c", "\\ulcorner"); -defineSymbol(math, ams, close, "\u2510", "\\urcorner"); -defineSymbol(math, ams, open, "\u2514", "\\llcorner"); -defineSymbol(math, ams, close, "\u2518", "\\lrcorner"); - -// AMS Binary Relations -defineSymbol(math, ams, rel, "\u2266", "\\leqq"); -defineSymbol(math, ams, rel, "\u2a7d", "\\leqslant"); -defineSymbol(math, ams, rel, "\u2a95", "\\eqslantless"); -defineSymbol(math, ams, rel, "\u2272", "\\lesssim"); -defineSymbol(math, ams, rel, "\u2a85", "\\lessapprox"); -defineSymbol(math, ams, rel, "\u224a", "\\approxeq"); -defineSymbol(math, ams, bin, "\u22d6", "\\lessdot"); -defineSymbol(math, ams, rel, "\u22d8", "\\lll"); -defineSymbol(math, ams, rel, "\u2276", "\\lessgtr"); -defineSymbol(math, ams, rel, "\u22da", "\\lesseqgtr"); -defineSymbol(math, ams, rel, "\u2a8b", "\\lesseqqgtr"); -defineSymbol(math, ams, rel, "\u2251", "\\doteqdot"); -defineSymbol(math, ams, rel, "\u2253", "\\risingdotseq"); -defineSymbol(math, ams, rel, "\u2252", "\\fallingdotseq"); -defineSymbol(math, ams, rel, "\u223d", "\\backsim"); -defineSymbol(math, ams, rel, "\u22cd", "\\backsimeq"); -defineSymbol(math, ams, rel, "\u2ac5", "\\subseteqq"); -defineSymbol(math, ams, rel, "\u22d0", "\\Subset"); -defineSymbol(math, ams, rel, "\u228f", "\\sqsubset"); -defineSymbol(math, ams, rel, "\u227c", "\\preccurlyeq"); -defineSymbol(math, ams, rel, "\u22de", "\\curlyeqprec"); -defineSymbol(math, ams, rel, "\u227e", "\\precsim"); -defineSymbol(math, ams, rel, "\u2ab7", "\\precapprox"); -defineSymbol(math, ams, rel, "\u22b2", "\\vartriangleleft"); -defineSymbol(math, ams, rel, "\u22b4", "\\trianglelefteq"); -defineSymbol(math, ams, rel, "\u22a8", "\\vDash"); -defineSymbol(math, ams, rel, "\u22aa", "\\Vvdash"); -defineSymbol(math, ams, rel, "\u2323", "\\smallsmile"); -defineSymbol(math, ams, rel, "\u2322", "\\smallfrown"); -defineSymbol(math, ams, rel, "\u224f", "\\bumpeq"); -defineSymbol(math, ams, rel, "\u224e", "\\Bumpeq"); -defineSymbol(math, ams, rel, "\u2267", "\\geqq"); -defineSymbol(math, ams, rel, "\u2a7e", "\\geqslant"); -defineSymbol(math, ams, rel, "\u2a96", "\\eqslantgtr"); -defineSymbol(math, ams, rel, "\u2273", "\\gtrsim"); -defineSymbol(math, ams, rel, "\u2a86", "\\gtrapprox"); -defineSymbol(math, ams, bin, "\u22d7", "\\gtrdot"); -defineSymbol(math, ams, rel, "\u22d9", "\\ggg"); -defineSymbol(math, ams, rel, "\u2277", "\\gtrless"); -defineSymbol(math, ams, rel, "\u22db", "\\gtreqless"); -defineSymbol(math, ams, rel, "\u2a8c", "\\gtreqqless"); -defineSymbol(math, ams, rel, "\u2256", "\\eqcirc"); -defineSymbol(math, ams, rel, "\u2257", "\\circeq"); -defineSymbol(math, ams, rel, "\u225c", "\\triangleq"); -defineSymbol(math, ams, rel, "\u223c", "\\thicksim"); -defineSymbol(math, ams, rel, "\u2248", "\\thickapprox"); -defineSymbol(math, ams, rel, "\u2ac6", "\\supseteqq"); -defineSymbol(math, ams, rel, "\u22d1", "\\Supset"); -defineSymbol(math, ams, rel, "\u2290", "\\sqsupset"); -defineSymbol(math, ams, rel, "\u227d", "\\succcurlyeq"); -defineSymbol(math, ams, rel, "\u22df", "\\curlyeqsucc"); -defineSymbol(math, ams, rel, "\u227f", "\\succsim"); -defineSymbol(math, ams, rel, "\u2ab8", "\\succapprox"); -defineSymbol(math, ams, rel, "\u22b3", "\\vartriangleright"); -defineSymbol(math, ams, rel, "\u22b5", "\\trianglerighteq"); -defineSymbol(math, ams, rel, "\u22a9", "\\Vdash"); -defineSymbol(math, ams, rel, "\u2223", "\\shortmid"); -defineSymbol(math, ams, rel, "\u2225", "\\shortparallel"); -defineSymbol(math, ams, rel, "\u226c", "\\between"); -defineSymbol(math, ams, rel, "\u22d4", "\\pitchfork"); -defineSymbol(math, ams, rel, "\u221d", "\\varpropto"); -defineSymbol(math, ams, rel, "\u25c0", "\\blacktriangleleft"); -defineSymbol(math, ams, rel, "\u2234", "\\therefore"); -defineSymbol(math, ams, rel, "\u220d", "\\backepsilon"); -defineSymbol(math, ams, rel, "\u25b6", "\\blacktriangleright"); -defineSymbol(math, ams, rel, "\u2235", "\\because"); -defineSymbol(math, ams, rel, "\u22d8", "\\llless"); -defineSymbol(math, ams, rel, "\u22d9", "\\gggtr"); -defineSymbol(math, ams, bin, "\u22b2", "\\lhd"); -defineSymbol(math, ams, bin, "\u22b3", "\\rhd"); -defineSymbol(math, ams, rel, "\u2242", "\\eqsim"); -defineSymbol(math, main, rel, "\u22c8", "\\Join"); -defineSymbol(math, ams, rel, "\u2251", "\\Doteq"); - -// AMS Binary Operators -defineSymbol(math, ams, bin, "\u2214", "\\dotplus"); -defineSymbol(math, ams, bin, "\u2216", "\\smallsetminus"); -defineSymbol(math, ams, bin, "\u22d2", "\\Cap"); -defineSymbol(math, ams, bin, "\u22d3", "\\Cup"); -defineSymbol(math, ams, bin, "\u2a5e", "\\doublebarwedge"); -defineSymbol(math, ams, bin, "\u229f", "\\boxminus"); -defineSymbol(math, ams, bin, "\u229e", "\\boxplus"); -defineSymbol(math, ams, bin, "\u22c7", "\\divideontimes"); -defineSymbol(math, ams, bin, "\u22c9", "\\ltimes"); -defineSymbol(math, ams, bin, "\u22ca", "\\rtimes"); -defineSymbol(math, ams, bin, "\u22cb", "\\leftthreetimes"); -defineSymbol(math, ams, bin, "\u22cc", "\\rightthreetimes"); -defineSymbol(math, ams, bin, "\u22cf", "\\curlywedge"); -defineSymbol(math, ams, bin, "\u22ce", "\\curlyvee"); -defineSymbol(math, ams, bin, "\u229d", "\\circleddash"); -defineSymbol(math, ams, bin, "\u229b", "\\circledast"); -defineSymbol(math, ams, bin, "\u22c5", "\\centerdot"); -defineSymbol(math, ams, bin, "\u22ba", "\\intercal"); -defineSymbol(math, ams, bin, "\u22d2", "\\doublecap"); -defineSymbol(math, ams, bin, "\u22d3", "\\doublecup"); -defineSymbol(math, ams, bin, "\u22a0", "\\boxtimes"); - -// AMS Arrows -defineSymbol(math, ams, rel, "\u21e2", "\\dashrightarrow"); -defineSymbol(math, ams, rel, "\u21e0", "\\dashleftarrow"); -defineSymbol(math, ams, rel, "\u21c7", "\\leftleftarrows"); -defineSymbol(math, ams, rel, "\u21c6", "\\leftrightarrows"); -defineSymbol(math, ams, rel, "\u21da", "\\Lleftarrow"); -defineSymbol(math, ams, rel, "\u219e", "\\twoheadleftarrow"); -defineSymbol(math, ams, rel, "\u21a2", "\\leftarrowtail"); -defineSymbol(math, ams, rel, "\u21ab", "\\looparrowleft"); -defineSymbol(math, ams, rel, "\u21cb", "\\leftrightharpoons"); -defineSymbol(math, ams, rel, "\u21b6", "\\curvearrowleft"); -defineSymbol(math, ams, rel, "\u21ba", "\\circlearrowleft"); -defineSymbol(math, ams, rel, "\u21b0", "\\Lsh"); -defineSymbol(math, ams, rel, "\u21c8", "\\upuparrows"); -defineSymbol(math, ams, rel, "\u21bf", "\\upharpoonleft"); -defineSymbol(math, ams, rel, "\u21c3", "\\downharpoonleft"); -defineSymbol(math, ams, rel, "\u22b8", "\\multimap"); -defineSymbol(math, ams, rel, "\u21ad", "\\leftrightsquigarrow"); -defineSymbol(math, ams, rel, "\u21c9", "\\rightrightarrows"); -defineSymbol(math, ams, rel, "\u21c4", "\\rightleftarrows"); -defineSymbol(math, ams, rel, "\u21a0", "\\twoheadrightarrow"); -defineSymbol(math, ams, rel, "\u21a3", "\\rightarrowtail"); -defineSymbol(math, ams, rel, "\u21ac", "\\looparrowright"); -defineSymbol(math, ams, rel, "\u21b7", "\\curvearrowright"); -defineSymbol(math, ams, rel, "\u21bb", "\\circlearrowright"); -defineSymbol(math, ams, rel, "\u21b1", "\\Rsh"); -defineSymbol(math, ams, rel, "\u21ca", "\\downdownarrows"); -defineSymbol(math, ams, rel, "\u21be", "\\upharpoonright"); -defineSymbol(math, ams, rel, "\u21c2", "\\downharpoonright"); -defineSymbol(math, ams, rel, "\u21dd", "\\rightsquigarrow"); -defineSymbol(math, ams, rel, "\u21dd", "\\leadsto"); -defineSymbol(math, ams, rel, "\u21db", "\\Rrightarrow"); -defineSymbol(math, ams, rel, "\u21be", "\\restriction"); - -defineSymbol(math, main, textord, "\u2018", "`"); -defineSymbol(math, main, textord, "$", "\\$"); -defineSymbol(math, main, textord, "%", "\\%"); -defineSymbol(math, main, textord, "_", "\\_"); -defineSymbol(math, main, textord, "\u2220", "\\angle"); -defineSymbol(math, main, textord, "\u221e", "\\infty"); -defineSymbol(math, main, textord, "\u2032", "\\prime"); -defineSymbol(math, main, textord, "\u25b3", "\\triangle"); -defineSymbol(math, main, textord, "\u0393", "\\Gamma"); -defineSymbol(math, main, textord, "\u0394", "\\Delta"); -defineSymbol(math, main, textord, "\u0398", "\\Theta"); -defineSymbol(math, main, textord, "\u039b", "\\Lambda"); -defineSymbol(math, main, textord, "\u039e", "\\Xi"); -defineSymbol(math, main, textord, "\u03a0", "\\Pi"); -defineSymbol(math, main, textord, "\u03a3", "\\Sigma"); -defineSymbol(math, main, textord, "\u03a5", "\\Upsilon"); -defineSymbol(math, main, textord, "\u03a6", "\\Phi"); -defineSymbol(math, main, textord, "\u03a8", "\\Psi"); -defineSymbol(math, main, textord, "\u03a9", "\\Omega"); -defineSymbol(math, main, textord, "\u00ac", "\\neg"); -defineSymbol(math, main, textord, "\u00ac", "\\lnot"); -defineSymbol(math, main, textord, "\u22a4", "\\top"); -defineSymbol(math, main, textord, "\u22a5", "\\bot"); -defineSymbol(math, main, textord, "\u2205", "\\emptyset"); -defineSymbol(math, ams, textord, "\u2205", "\\varnothing"); -defineSymbol(math, main, mathord, "\u03b1", "\\alpha"); -defineSymbol(math, main, mathord, "\u03b2", "\\beta"); -defineSymbol(math, main, mathord, "\u03b3", "\\gamma"); -defineSymbol(math, main, mathord, "\u03b4", "\\delta"); -defineSymbol(math, main, mathord, "\u03f5", "\\epsilon"); -defineSymbol(math, main, mathord, "\u03b6", "\\zeta"); -defineSymbol(math, main, mathord, "\u03b7", "\\eta"); -defineSymbol(math, main, mathord, "\u03b8", "\\theta"); -defineSymbol(math, main, mathord, "\u03b9", "\\iota"); -defineSymbol(math, main, mathord, "\u03ba", "\\kappa"); -defineSymbol(math, main, mathord, "\u03bb", "\\lambda"); -defineSymbol(math, main, mathord, "\u03bc", "\\mu"); -defineSymbol(math, main, mathord, "\u03bd", "\\nu"); -defineSymbol(math, main, mathord, "\u03be", "\\xi"); -defineSymbol(math, main, mathord, "o", "\\omicron"); -defineSymbol(math, main, mathord, "\u03c0", "\\pi"); -defineSymbol(math, main, mathord, "\u03c1", "\\rho"); -defineSymbol(math, main, mathord, "\u03c3", "\\sigma"); -defineSymbol(math, main, mathord, "\u03c4", "\\tau"); -defineSymbol(math, main, mathord, "\u03c5", "\\upsilon"); -defineSymbol(math, main, mathord, "\u03d5", "\\phi"); -defineSymbol(math, main, mathord, "\u03c7", "\\chi"); -defineSymbol(math, main, mathord, "\u03c8", "\\psi"); -defineSymbol(math, main, mathord, "\u03c9", "\\omega"); -defineSymbol(math, main, mathord, "\u03b5", "\\varepsilon"); -defineSymbol(math, main, mathord, "\u03d1", "\\vartheta"); -defineSymbol(math, main, mathord, "\u03d6", "\\varpi"); -defineSymbol(math, main, mathord, "\u03f1", "\\varrho"); -defineSymbol(math, main, mathord, "\u03c2", "\\varsigma"); -defineSymbol(math, main, mathord, "\u03c6", "\\varphi"); -defineSymbol(math, main, bin, "\u2217", "*"); -defineSymbol(math, main, bin, "+", "+"); -defineSymbol(math, main, bin, "\u2212", "-"); -defineSymbol(math, main, bin, "\u22c5", "\\cdot"); -defineSymbol(math, main, bin, "\u2218", "\\circ"); -defineSymbol(math, main, bin, "\u00f7", "\\div"); -defineSymbol(math, main, bin, "\u00b1", "\\pm"); -defineSymbol(math, main, bin, "\u00d7", "\\times"); -defineSymbol(math, main, bin, "\u2229", "\\cap"); -defineSymbol(math, main, bin, "\u222a", "\\cup"); -defineSymbol(math, main, bin, "\u2216", "\\setminus"); -defineSymbol(math, main, bin, "\u2227", "\\land"); -defineSymbol(math, main, bin, "\u2228", "\\lor"); -defineSymbol(math, main, bin, "\u2227", "\\wedge"); -defineSymbol(math, main, bin, "\u2228", "\\vee"); -defineSymbol(math, main, textord, "\u221a", "\\surd"); -defineSymbol(math, main, open, "(", "("); -defineSymbol(math, main, open, "[", "["); -defineSymbol(math, main, open, "\u27e8", "\\langle"); -defineSymbol(math, main, open, "\u2223", "\\lvert"); -defineSymbol(math, main, open, "\u2225", "\\lVert"); -defineSymbol(math, main, close, ")", ")"); -defineSymbol(math, main, close, "]", "]"); -defineSymbol(math, main, close, "?", "?"); -defineSymbol(math, main, close, "!", "!"); -defineSymbol(math, main, close, "\u27e9", "\\rangle"); -defineSymbol(math, main, close, "\u2223", "\\rvert"); -defineSymbol(math, main, close, "\u2225", "\\rVert"); -defineSymbol(math, main, rel, "=", "="); -defineSymbol(math, main, rel, "<", "<"); -defineSymbol(math, main, rel, ">", ">"); -defineSymbol(math, main, rel, ":", ":"); -defineSymbol(math, main, rel, "\u2248", "\\approx"); -defineSymbol(math, main, rel, "\u2245", "\\cong"); -defineSymbol(math, main, rel, "\u2265", "\\ge"); -defineSymbol(math, main, rel, "\u2265", "\\geq"); -defineSymbol(math, main, rel, "\u2190", "\\gets"); -defineSymbol(math, main, rel, ">", "\\gt"); -defineSymbol(math, main, rel, "\u2208", "\\in"); -defineSymbol(math, main, rel, "\u2209", "\\notin"); -defineSymbol(math, main, rel, "\u2282", "\\subset"); -defineSymbol(math, main, rel, "\u2283", "\\supset"); -defineSymbol(math, main, rel, "\u2286", "\\subseteq"); -defineSymbol(math, main, rel, "\u2287", "\\supseteq"); -defineSymbol(math, ams, rel, "\u2288", "\\nsubseteq"); -defineSymbol(math, ams, rel, "\u2289", "\\nsupseteq"); -defineSymbol(math, main, rel, "\u22a8", "\\models"); -defineSymbol(math, main, rel, "\u2190", "\\leftarrow"); -defineSymbol(math, main, rel, "\u2264", "\\le"); -defineSymbol(math, main, rel, "\u2264", "\\leq"); -defineSymbol(math, main, rel, "<", "\\lt"); -defineSymbol(math, main, rel, "\u2260", "\\ne"); -defineSymbol(math, main, rel, "\u2260", "\\neq"); -defineSymbol(math, main, rel, "\u2192", "\\rightarrow"); -defineSymbol(math, main, rel, "\u2192", "\\to"); -defineSymbol(math, ams, rel, "\u2271", "\\ngeq"); -defineSymbol(math, ams, rel, "\u2270", "\\nleq"); -defineSymbol(math, main, spacing, null, "\\!"); -defineSymbol(math, main, spacing, "\u00a0", "\\ "); -defineSymbol(math, main, spacing, "\u00a0", "~"); -defineSymbol(math, main, spacing, null, "\\,"); -defineSymbol(math, main, spacing, null, "\\:"); -defineSymbol(math, main, spacing, null, "\\;"); -defineSymbol(math, main, spacing, null, "\\enspace"); -defineSymbol(math, main, spacing, null, "\\qquad"); -defineSymbol(math, main, spacing, null, "\\quad"); -defineSymbol(math, main, spacing, "\u00a0", "\\space"); -defineSymbol(math, main, punct, ",", ","); -defineSymbol(math, main, punct, ";", ";"); -defineSymbol(math, main, punct, ":", "\\colon"); -defineSymbol(math, ams, bin, "\u22bc", "\\barwedge"); -defineSymbol(math, ams, bin, "\u22bb", "\\veebar"); -defineSymbol(math, main, bin, "\u2299", "\\odot"); -defineSymbol(math, main, bin, "\u2295", "\\oplus"); -defineSymbol(math, main, bin, "\u2297", "\\otimes"); -defineSymbol(math, main, textord, "\u2202", "\\partial"); -defineSymbol(math, main, bin, "\u2298", "\\oslash"); -defineSymbol(math, ams, bin, "\u229a", "\\circledcirc"); -defineSymbol(math, ams, bin, "\u22a1", "\\boxdot"); -defineSymbol(math, main, bin, "\u25b3", "\\bigtriangleup"); -defineSymbol(math, main, bin, "\u25bd", "\\bigtriangledown"); -defineSymbol(math, main, bin, "\u2020", "\\dagger"); -defineSymbol(math, main, bin, "\u22c4", "\\diamond"); -defineSymbol(math, main, bin, "\u22c6", "\\star"); -defineSymbol(math, main, bin, "\u25c3", "\\triangleleft"); -defineSymbol(math, main, bin, "\u25b9", "\\triangleright"); -defineSymbol(math, main, open, "{", "\\{"); -defineSymbol(math, main, close, "}", "\\}"); -defineSymbol(math, main, open, "{", "\\lbrace"); -defineSymbol(math, main, close, "}", "\\rbrace"); -defineSymbol(math, main, open, "[", "\\lbrack"); -defineSymbol(math, main, close, "]", "\\rbrack"); -defineSymbol(math, main, open, "\u230a", "\\lfloor"); -defineSymbol(math, main, close, "\u230b", "\\rfloor"); -defineSymbol(math, main, open, "\u2308", "\\lceil"); -defineSymbol(math, main, close, "\u2309", "\\rceil"); -defineSymbol(math, main, textord, "\\", "\\backslash"); -defineSymbol(math, main, textord, "\u2223", "|"); -defineSymbol(math, main, textord, "\u2223", "\\vert"); -defineSymbol(math, main, textord, "\u2225", "\\|"); -defineSymbol(math, main, textord, "\u2225", "\\Vert"); -defineSymbol(math, main, rel, "\u2191", "\\uparrow"); -defineSymbol(math, main, rel, "\u21d1", "\\Uparrow"); -defineSymbol(math, main, rel, "\u2193", "\\downarrow"); -defineSymbol(math, main, rel, "\u21d3", "\\Downarrow"); -defineSymbol(math, main, rel, "\u2195", "\\updownarrow"); -defineSymbol(math, main, rel, "\u21d5", "\\Updownarrow"); -defineSymbol(math, math, op, "\u2210", "\\coprod"); -defineSymbol(math, math, op, "\u22c1", "\\bigvee"); -defineSymbol(math, math, op, "\u22c0", "\\bigwedge"); -defineSymbol(math, math, op, "\u2a04", "\\biguplus"); -defineSymbol(math, math, op, "\u22c2", "\\bigcap"); -defineSymbol(math, math, op, "\u22c3", "\\bigcup"); -defineSymbol(math, math, op, "\u222b", "\\int"); -defineSymbol(math, math, op, "\u222b", "\\intop"); -defineSymbol(math, math, op, "\u222c", "\\iint"); -defineSymbol(math, math, op, "\u222d", "\\iiint"); -defineSymbol(math, math, op, "\u220f", "\\prod"); -defineSymbol(math, math, op, "\u2211", "\\sum"); -defineSymbol(math, math, op, "\u2a02", "\\bigotimes"); -defineSymbol(math, math, op, "\u2a01", "\\bigoplus"); -defineSymbol(math, math, op, "\u2a00", "\\bigodot"); -defineSymbol(math, math, op, "\u222e", "\\oint"); -defineSymbol(math, math, op, "\u2a06", "\\bigsqcup"); -defineSymbol(math, math, op, "\u222b", "\\smallint"); -defineSymbol(math, main, inner, "\u2026", "\\ldots"); -defineSymbol(math, main, inner, "\u22ef", "\\cdots"); -defineSymbol(math, main, inner, "\u22f1", "\\ddots"); -defineSymbol(math, main, textord, "\u22ee", "\\vdots"); -defineSymbol(math, main, accent, "\u00b4", "\\acute"); -defineSymbol(math, main, accent, "\u0060", "\\grave"); -defineSymbol(math, main, accent, "\u00a8", "\\ddot"); -defineSymbol(math, main, accent, "\u007e", "\\tilde"); -defineSymbol(math, main, accent, "\u00af", "\\bar"); -defineSymbol(math, main, accent, "\u02d8", "\\breve"); -defineSymbol(math, main, accent, "\u02c7", "\\check"); -defineSymbol(math, main, accent, "\u005e", "\\hat"); -defineSymbol(math, main, accent, "\u20d7", "\\vec"); -defineSymbol(math, main, accent, "\u02d9", "\\dot"); -defineSymbol(math, main, mathord, "\u0131", "\\imath"); -defineSymbol(math, main, mathord, "\u0237", "\\jmath"); - -defineSymbol(text, main, spacing, "\u00a0", "\\ "); -defineSymbol(text, main, spacing, "\u00a0", " "); -defineSymbol(text, main, spacing, "\u00a0", "~"); - -// There are lots of symbols which are the same, so we add them in afterwards. -var i; -var ch; - -// All of these are textords in math mode -var mathTextSymbols = "0123456789/@.\""; -for (i = 0; i < mathTextSymbols.length; i++) { - ch = mathTextSymbols.charAt(i); - defineSymbol(math, main, textord, ch, ch); -} - -// All of these are textords in text mode -var textSymbols = "0123456789`!@*()-=+[]'\";:?/.,"; -for (i = 0; i < textSymbols.length; i++) { - ch = textSymbols.charAt(i); - defineSymbol(text, main, textord, ch, ch); -} - -// All of these are textords in text mode, and mathords in math mode -var letters = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"; -for (i = 0; i < letters.length; i++) { - ch = letters.charAt(i); - defineSymbol(math, main, mathord, ch, ch); - defineSymbol(text, main, textord, ch, ch); -} diff --git a/webapp/non_npm_dependencies/katex/src/utils.js b/webapp/non_npm_dependencies/katex/src/utils.js deleted file mode 100644 index f9e57cc65..000000000 --- a/webapp/non_npm_dependencies/katex/src/utils.js +++ /dev/null @@ -1,106 +0,0 @@ -/** - * This file contains a list of utility functions which are useful in other - * files. - */ - -/** - * Provide an `indexOf` function which works in IE8, but defers to native if - * possible. - */ -var nativeIndexOf = Array.prototype.indexOf; -var indexOf = function(list, elem) { - if (list == null) { - return -1; - } - if (nativeIndexOf && list.indexOf === nativeIndexOf) { - return list.indexOf(elem); - } - var i = 0; - var l = list.length; - for (; i < l; i++) { - if (list[i] === elem) { - return i; - } - } - return -1; -}; - -/** - * Return whether an element is contained in a list - */ -var contains = function(list, elem) { - return indexOf(list, elem) !== -1; -}; - -/** - * Provide a default value if a setting is undefined - */ -var deflt = function(setting, defaultIfUndefined) { - return setting === undefined ? defaultIfUndefined : setting; -}; - -// hyphenate and escape adapted from Facebook's React under Apache 2 license - -var uppercase = /([A-Z])/g; -var hyphenate = function(str) { - return str.replace(uppercase, "-$1").toLowerCase(); -}; - -var ESCAPE_LOOKUP = { - "&": "&", - ">": ">", - "<": "<", - "\"": """, - "'": "'", -}; - -var ESCAPE_REGEX = /[&><"']/g; - -function escaper(match) { - return ESCAPE_LOOKUP[match]; -} - -/** - * Escapes text to prevent scripting attacks. - * - * @param {*} text Text value to escape. - * @return {string} An escaped string. - */ -function escape(text) { - return ("" + text).replace(ESCAPE_REGEX, escaper); -} - -/** - * A function to set the text content of a DOM element in all supported - * browsers. Note that we don't define this if there is no document. - */ -var setTextContent; -if (typeof document !== "undefined") { - var testNode = document.createElement("span"); - if ("textContent" in testNode) { - setTextContent = function(node, text) { - node.textContent = text; - }; - } else { - setTextContent = function(node, text) { - node.innerText = text; - }; - } -} - -/** - * A function to clear a node. - */ -function clearNode(node) { - setTextContent(node, ""); -} - -module.exports = { - contains: contains, - deflt: deflt, - escape: escape, - hyphenate: hyphenate, - indexOf: indexOf, - setTextContent: setTextContent, - clearNode: clearNode, -}; |