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Diffstat (limited to 'client/katex/katex.js')
| -rw-r--r-- | client/katex/katex.js | 8246 |
1 files changed, 0 insertions, 8246 deletions
diff --git a/client/katex/katex.js b/client/katex/katex.js deleted file mode 100644 index 7ff56bf..0000000 --- a/client/katex/katex.js +++ /dev/null @@ -1,8246 +0,0 @@ -(function(e){if("function"==typeof bootstrap)bootstrap("katex",e);else if("object"==typeof exports)module.exports=e();else if("function"==typeof define&&define.amd)define(e);else if("undefined"!=typeof ses){if(!ses.ok())return;ses.makeKatex=e}else"undefined"!=typeof window?window.katex=e():global.katex=e()})(function(){var define,ses,bootstrap,module,exports; -return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);throw new Error("Cannot find module '"+o+"'")}var f=n[o]={exports:{}};t[o][0].call(f.exports,function(e){var n=t[o][1][e];return s(n?n:e)},f,f.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){ -/** - * This is the main entry point for KaTeX. 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 -}; - -},{"./src/ParseError":5,"./src/Settings":7,"./src/buildTree":12,"./src/parseTree":20,"./src/utils":22}],2:[function(require,module,exports){ -/** @flow */ - -"use strict"; - -function getRelocatable(re) { - // In the future, this could use a WeakMap instead of an expando. - if (!re.__matchAtRelocatable) { - // Disjunctions are the lowest-precedence operator, so we can make any - // pattern match the empty string by appending `|()` to it: - // https://people.mozilla.org/~jorendorff/es6-draft.html#sec-patterns - var source = re.source + "|()"; - - // We always make the new regex global. - var flags = "g" + (re.ignoreCase ? "i" : "") + (re.multiline ? "m" : "") + (re.unicode ? "u" : "") - // sticky (/.../y) doesn't make sense in conjunction with our relocation - // logic, so we ignore it here. - ; - - re.__matchAtRelocatable = new RegExp(source, flags); - } - return re.__matchAtRelocatable; -} - -function matchAt(re, str, pos) { - if (re.global || re.sticky) { - throw new Error("matchAt(...): Only non-global regexes are supported"); - } - var reloc = getRelocatable(re); - reloc.lastIndex = pos; - var match = reloc.exec(str); - // Last capturing group is our sentinel that indicates whether the regex - // matched at the given location. - if (match[match.length - 1] == null) { - // Original regex matched. - match.length = match.length - 1; - return match; - } else { - return null; - } -} - -module.exports = matchAt; -},{}],3:[function(require,module,exports){ -/** - * 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; -} - -// "normal" types of tokens. These are tokens which can be matched by a simple -// regex -var mathNormals = [ - /[/|@.""`0-9a-zA-Z]/, // ords - /[*+-]/, // bins - /[=<>:]/, // rels - /[,;]/, // punctuation - /['\^_{}]/, // misc - /[(\[]/, // opens - /[)\]?!]/, // closes - /~/, // spacing - /&/, // horizontal alignment - /\\\\/ // line break -]; - -// These are "normal" tokens like above, but should instead be parsed in text -// mode. -var textNormals = [ - /[a-zA-Z0-9`!@*()-=+\[\]'";:?\/.,]/, // ords - /[{}]/, // grouping - /~/, // spacing - /&/, // horizontal alignment - /\\\\/ // line break -]; - -// Regexes for matching whitespace -var whitespaceRegex = /\s*/; -var whitespaceConcatRegex = / +|\\ +/; - -// This regex matches any other TeX function, which is a backslash followed by a -// word or a single symbol -var anyFunc = /\\(?:[a-zA-Z]+|.)/; - -/** - * This function lexes a single normal token. It takes a position, a list of - * "normal" tokens to try, and whether it should completely ignore whitespace or - * not. - */ -Lexer.prototype._innerLex = function(pos, normals, ignoreWhitespace) { - var input = this._input; - var whitespace; - - if (ignoreWhitespace) { - // Get rid of whitespace. - whitespace = matchAt(whitespaceRegex, input, pos)[0]; - pos += whitespace.length; - } else { - // Do the funky concatenation of whitespace that happens in text mode. - whitespace = matchAt(whitespaceConcatRegex, input, pos); - if (whitespace !== null) { - return new Token(" ", null, pos + whitespace[0].length); - } - } - - // If there's no more input to parse, return an EOF token - if (pos === input.length) { - return new Token("EOF", null, pos); - } - - var match; - if ((match = matchAt(anyFunc, input, pos))) { - // If we match a function token, return it - return new Token(match[0], null, pos + match[0].length); - } else { - // Otherwise, we look through the normal token regexes and see if it's - // one of them. - for (var i = 0; i < normals.length; i++) { - var normal = normals[i]; - - if ((match = matchAt(normal, input, pos))) { - // If it is, return it - return new Token( - match[0], null, pos + match[0].length); - } - } - } - - throw new ParseError( - "Unexpected character: '" + input[pos] + "'", - this, pos); -}; - -// 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, mathNormals, true); - } else if (mode === "text") { - return this._innerLex(pos, textNormals, 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; - -},{"./ParseError":5,"match-at":2}],4:[function(require,module,exports){ -/** - * 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; - -},{}],5:[function(require,module,exports){ -/** - * 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; - -},{}],6:[function(require,module,exports){ -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 main functions also take a mode that the parser is currently in - * (currently "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 `ParseResult`s, which contain a ParseNode and a - * new position. - * - * The later functions (which are called deeper in the parse) sometimes return - * ParseFuncOrArgument, which contain a ParseResult 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; -var ParseResult = parseData.ParseResult; - -/** - * An initial function (without its arguments), or an argument to a function. - * The `result` argument should be a ParseResult. - */ -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. - */ -Parser.prototype.expect = function(result, text) { - if (result.text !== text) { - throw new ParseError( - "Expected '" + text + "', got '" + result.text + "'", - this.lexer, result.position - ); - } -}; - -/** - * Main parsing function, which parses an entire input. - * - * @return {?Array.<ParseNode>} - */ -Parser.prototype.parse = function(input) { - // Try to parse the input - var parse = this.parseInput(0, "math"); - return parse.result; -}; - -/** - * Parses an entire input tree. - */ -Parser.prototype.parseInput = function(pos, mode) { - // Parse an expression - var expression = this.parseExpression(pos, mode, false); - // If we succeeded, make sure there's an EOF at the end - this.expect(expression.peek, "EOF"); - 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 {ParseResult} - */ -Parser.prototype.parseExpression = function(pos, mode, breakOnInfix, breakOnToken) { - var body = []; - var lex = null; - // 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) { - lex = this.lexer.lex(pos, mode); - if (endOfExpression.indexOf(lex.text) !== -1) { - break; - } - if (breakOnToken && lex.text === breakOnToken) { - break; - } - var atom = this.parseAtom(pos, mode); - if (!atom) { - break; - } - if (breakOnInfix && atom.result.type === "infix") { - break; - } - body.push(atom.result); - pos = atom.position; - } - var res = new ParseResult(this.handleInfixNodes(body, mode), pos); - res.peek = lex; - return res; -}; - -/** - * 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, mode) { - var overIndex = -1; - var func; - 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; - func = functions.funcs[funcName]; - } - } - - if (overIndex !== -1) { - var numerNode, 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, mode); - } - - if (denomBody.length === 1 && denomBody[0].type === "ordgroup") { - denomNode = denomBody[0]; - } else { - denomNode = new ParseNode("ordgroup", denomBody, mode); - } - - var value = func.handler(funcName, numerNode, denomNode); - return [new ParseNode(value.type, value, 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(pos, mode, symbol, name) { - var group = this.parseGroup(pos, mode); - - if (!group) { - throw new ParseError( - "Expected group after '" + symbol + "'", this.lexer, pos); - } else if (group.isFunction) { - // ^ and _ have a greediness, so handle interactions with functions' - // greediness - var funcGreediness = functions.funcs[group.result.result].greediness; - if (funcGreediness > SUPSUB_GREEDINESS) { - return this.parseFunction(pos, mode); - } else { - throw new ParseError( - "Got function '" + group.result.result + "' with no arguments " + - "as " + name, - this.lexer, pos); - } - } else { - return group.result; - } -}; - -/** - * Parses a group with optional super/subscripts. - * - * @return {?ParseResult} - */ -Parser.prototype.parseAtom = function(pos, mode) { - // The body of an atom is an implicit group, so that things like - // \left(x\right)^2 work correctly. - var base = this.parseImplicitGroup(pos, mode); - - // In text mode, we don't have superscripts or subscripts - if (mode === "text") { - return base; - } - - // Handle an empty base - var currPos; - if (!base) { - currPos = pos; - base = undefined; - } else { - currPos = base.position; - } - - var superscript; - var subscript; - var result; - while (true) { - // Lex the first token - var lex = this.lexer.lex(currPos, mode); - - if (lex.text === "^") { - // We got a superscript start - if (superscript) { - throw new ParseError( - "Double superscript", this.lexer, currPos); - } - result = this.handleSupSubscript( - lex.position, mode, lex.text, "superscript"); - currPos = result.position; - superscript = result.result; - } else if (lex.text === "_") { - // We got a subscript start - if (subscript) { - throw new ParseError( - "Double subscript", this.lexer, currPos); - } - result = this.handleSupSubscript( - lex.position, mode, lex.text, "subscript"); - currPos = result.position; - subscript = result.result; - } else if (lex.text === "'") { - // We got a prime - var prime = new ParseNode("textord", "\\prime", mode); - - // Many primes can be grouped together, so we handle this here - var primes = [prime]; - currPos = lex.position; - // Keep lexing tokens until we get something that's not a prime - while ((lex = this.lexer.lex(currPos, mode)).text === "'") { - // For each one, add another prime to the list - primes.push(prime); - currPos = lex.position; - } - // Put them into an ordgroup as the superscript - superscript = new ParseNode("ordgroup", primes, 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 ParseResult( - new ParseNode("supsub", { - base: base && base.result, - sup: superscript, - sub: subscript - }, mode), - currPos); - } 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 {?ParseResult} - */ -Parser.prototype.parseImplicitGroup = function(pos, mode) { - var start = this.parseSymbol(pos, mode); - - if (!start || !start.result) { - // If we didn't get anything we handle, fall back to parseFunction - return this.parseFunction(pos, mode); - } - - var func = start.result.result; - var body; - - if (func === "\\left") { - // If we see a left: - // Parse the entire left function (including the delimiter) - var left = this.parseFunction(pos, mode); - // Parse out the implicit body - body = this.parseExpression(left.position, mode, false); - // Check the next token - this.expect(body.peek, "\\right"); - var right = this.parseFunction(body.position, mode); - return new ParseResult( - new ParseNode("leftright", { - body: body.result, - left: left.result.value.value, - right: right.result.value.value - }, mode), - right.position); - } else if (func === "\\begin") { - // begin...end is similar to left...right - var begin = this.parseFunction(pos, mode); - var envName = begin.result.value.name; - if (!environments.hasOwnProperty(envName)) { - throw new ParseError( - "No such environment: " + envName, - this.lexer, begin.result.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 = [null, mode, envName]; - var newPos = this.parseArguments( - begin.position, mode, "\\begin{" + envName + "}", env, args); - args[0] = newPos; - var result = env.handler.apply(this, args); - var endLex = this.lexer.lex(result.position, mode); - this.expect(endLex, "\\end"); - var end = this.parseFunction(result.position, mode); - if (end.result.value.name !== envName) { - throw new ParseError( - "Mismatch: \\begin{" + envName + "} matched " + - "by \\end{" + end.result.value.name + "}", - this.lexer, end.namepos); - } - 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(start.result.position, mode, false); - return new ParseResult( - 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.result - }, mode), - body.position); - } else if (utils.contains(styleFuncs, func)) { - // If we see a styling function, parse out the implict body - body = this.parseExpression(start.result.position, mode, true); - return new ParseResult( - 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.result - }, mode), - body.position); - } else { - // Defer to parseFunction if it's not a function we handle - return this.parseFunction(pos, mode); - } -}; - -/** - * Parses an entire function, including its base and all of its arguments - * - * @return {?ParseResult} - */ -Parser.prototype.parseFunction = function(pos, mode) { - var baseGroup = this.parseGroup(pos, mode); - - if (baseGroup) { - if (baseGroup.isFunction) { - var func = baseGroup.result.result; - var funcData = functions.funcs[func]; - if (mode === "text" && !funcData.allowedInText) { - throw new ParseError( - "Can't use function '" + func + "' in text mode", - this.lexer, baseGroup.position); - } - - var args = [func]; - var newPos = this.parseArguments( - baseGroup.result.position, mode, func, funcData, args); - var result = functions.funcs[func].handler.apply(this, args); - return new ParseResult( - new ParseNode(result.type, result, mode), - newPos); - } else { - return baseGroup.result; - } - } else { - return null; - } -}; - - -/** - * Parses the arguments of a function or environment - * - * @param {string} func "\name" or "\begin{name}" - * @param {{numArgs:number,numOptionalArgs:number|undefined}} funcData - * @param {Array} args list of arguments to which new ones will be pushed - * @return the position after all arguments have been parsed - */ -Parser.prototype.parseArguments = function(pos, mode, func, funcData, args) { - var totalArgs = funcData.numArgs + funcData.numOptionalArgs; - if (totalArgs === 0) { - return pos; - } - - var newPos = pos; - var baseGreediness = funcData.greediness; - var positions = [newPos]; - - 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(newPos, argType, mode, true); - } else { - arg = this.parseOptionalGroup(newPos, mode); - } - if (!arg) { - args.push(null); - positions.push(newPos); - continue; - } - } else { - if (argType) { - arg = this.parseSpecialGroup(newPos, argType, mode); - } else { - arg = this.parseGroup(newPos, mode); - } - if (!arg) { - throw new ParseError( - "Expected group after '" + func + "'", - this.lexer, newPos); - } - } - var argNode; - if (arg.isFunction) { - var argGreediness = - functions.funcs[arg.result.result].greediness; - if (argGreediness > baseGreediness) { - argNode = this.parseFunction(newPos, mode); - } else { - throw new ParseError( - "Got function '" + arg.result.result + "' as " + - "argument to '" + func + "'", - this.lexer, arg.result.position - 1); - } - } else { - argNode = arg.result; - } - args.push(argNode.result); - positions.push(argNode.position); - newPos = argNode.position; - } - - args.push(positions); - - return newPos; -}; - - -/** - * 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(pos, mode, outerMode, optional) { - // Handle `original` argTypes - if (mode === "original") { - mode = outerMode; - } - - if (mode === "color" || mode === "size") { - // color and size modes are special because they should have braces and - // should only lex a single symbol inside - var openBrace = this.lexer.lex(pos, outerMode); - if (optional && openBrace.text !== "[") { - // optional arguments should return null if they don't exist - return null; - } - this.expect(openBrace, optional ? "[" : "{"); - var inner = this.lexer.lex(openBrace.position, mode); - var data; - if (mode === "color") { - data = inner.text; - } else { - data = inner.data; - } - var closeBrace = this.lexer.lex(inner.position, outerMode); - this.expect(closeBrace, optional ? "]" : "}"); - return new ParseFuncOrArgument( - new ParseResult( - new ParseNode(mode, data, outerMode), - closeBrace.position), - false); - } else if (mode === "text") { - // text mode is special because it should ignore the whitespace before - // it - var whitespace = this.lexer.lex(pos, "whitespace"); - pos = whitespace.position; - } - - if (optional) { - return this.parseOptionalGroup(pos, mode); - } else { - return this.parseGroup(pos, mode); - } -}; - -/** - * 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(pos, mode) { - var start = this.lexer.lex(pos, mode); - // Try to parse an open brace - if (start.text === "{") { - // If we get a brace, parse an expression - var expression = this.parseExpression(start.position, mode, false); - // Make sure we get a close brace - var closeBrace = this.lexer.lex(expression.position, mode); - this.expect(closeBrace, "}"); - return new ParseFuncOrArgument( - new ParseResult( - new ParseNode("ordgroup", expression.result, mode), - closeBrace.position), - false); - } else { - // Otherwise, just return a nucleus - return this.parseSymbol(pos, mode); - } -}; - -/** - * Parses a group, which is an expression in brackets (like "[x+y]") - * - * @return {?ParseFuncOrArgument} - */ -Parser.prototype.parseOptionalGroup = function(pos, mode) { - var start = this.lexer.lex(pos, mode); - // Try to parse an open bracket - if (start.text === "[") { - // If we get a brace, parse an expression - var expression = this.parseExpression(start.position, mode, false, "]"); - // Make sure we get a close bracket - var closeBracket = this.lexer.lex(expression.position, mode); - this.expect(closeBracket, "]"); - return new ParseFuncOrArgument( - new ParseResult( - new ParseNode("ordgroup", expression.result, mode), - closeBracket.position), - 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(pos, mode) { - var nucleus = this.lexer.lex(pos, mode); - - if (functions.funcs[nucleus.text]) { - // If there exists a function with this name, we return the function and - // say that it is a function. - return new ParseFuncOrArgument( - new ParseResult(nucleus.text, nucleus.position), - true); - } else if (symbols[mode][nucleus.text]) { - // Otherwise if this is a no-argument function, find the type it - // corresponds to in the symbols map - return new ParseFuncOrArgument( - new ParseResult( - new ParseNode(symbols[mode][nucleus.text].group, - nucleus.text, mode), - nucleus.position), - false); - } else { - return null; - } -}; - -Parser.prototype.ParseNode = ParseNode; - -module.exports = Parser; - -},{"./Lexer":3,"./ParseError":5,"./environments":15,"./functions":17,"./parseData":19,"./symbols":21,"./utils":22}],7:[function(require,module,exports){ -/** - * 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); -} - -module.exports = Settings; - -},{}],8:[function(require,module,exports){ -/** - * 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] -}; - -},{}],9:[function(require,module,exports){ -/** - * 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"); - -/** - * 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. - if (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)) || - utils.contains(["\u0131", "\u0237"], 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(["\u0131", "\u0237"], value)) { - return mathit(value, mode, color, classes.concat(["mathit"])); - } 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" - } -}; - -var greekCapitals = [ - "\\Gamma", - "\\Delta", - "\\Theta", - "\\Lambda", - "\\Xi", - "\\Pi", - "\\Sigma", - "\\Upsilon", - "\\Phi", - "\\Psi", - "\\Omega" -]; - -/** - * 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" - }, - - // 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 = { - makeSymbol: makeSymbol, - fontMap: fontMap, - mathsym: mathsym, - makeSpan: makeSpan, - makeFragment: makeFragment, - makeVList: makeVList, - makeOrd: makeOrd, - sizingMultiplier: sizingMultiplier, - spacingFunctions: spacingFunctions -}; - -},{"./domTree":14,"./fontMetrics":16,"./symbols":21,"./utils":22}],10:[function(require,module,exports){ -/** - * 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 Options = require("./Options"); -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 -var groupToType = { - mathord: "mord", - textord: "mord", - bin: "mbin", - rel: "mrel", - text: "mord", - open: "mopen", - close: "mclose", - inner: "minner", - genfrac: "mord", - array: "minner", - 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; - } 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 = { - mathord: function(group, options, prev) { - return buildCommon.makeOrd(group, options, "mathord"); - }, - - textord: function(group, options, prev) { - return buildCommon.makeOrd(group, options, "textord"); - }, - - 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]); - }, - - rel: function(group, options, prev) { - return buildCommon.mathsym( - group.value, group.mode, options.getColor(), ["mrel"]); - }, - - open: function(group, options, prev) { - return buildCommon.mathsym( - group.value, group.mode, options.getColor(), ["mopen"]); - }, - - close: function(group, options, prev) { - return buildCommon.mathsym( - group.value, group.mode, options.getColor(), ["mclose"]); - }, - - inner: function(group, options, prev) { - return buildCommon.mathsym( - group.value, group.mode, options.getColor(), ["minner"]); - }, - - punct: function(group, options, prev) { - return buildCommon.mathsym( - group.value, group.mode, options.getColor(), ["mpunct"]); - }, - - ordgroup: function(group, options, prev) { - return makeSpan( - ["mord", options.style.cls()], - buildExpression(group.value, options.reset()) - ); - }, - - text: function(group, options, prev) { - return makeSpan(["text", "mord", options.style.cls()], - buildExpression(group.value.body, options.reset())); - }, - - 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); - }, - - 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, submid, sup, 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, 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]); - }, - - 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, 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()); - }, - - array: function(group, options, prev) { - var r, 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; - for (c = 0; c < nc; ++c) { - var coldescr = coldescriptions[c] || {}; - 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(["minner"], [body], options.getColor()); - }, - - 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]); - } - }, - - 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]); - }, - - 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]); - }, - - 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, supKern, submid, 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, top, 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; - } - }, - - 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"], [k, a, t, e, x], options.getColor()); - }, - - 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()); - }, - - 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]); - } - }, - - 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; - }, - - 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); - }, - - font: function(group, options, prev) { - var font = group.value.font; - return buildGroup(group.value.body, options.withFont(font), prev); - }, - - 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)]); - }, - - 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()); - }, - - 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; - }, - - 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; - } - }, - - 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, settings) { - // 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)); - - var startStyle = Style.TEXT; - if (settings.displayMode) { - startStyle = Style.DISPLAY; - } - - // Setup the default options - var options = new Options({ - style: startStyle, - size: "size5" - }); - - // 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; - -},{"./Options":4,"./ParseError":5,"./Style":8,"./buildCommon":9,"./delimiter":13,"./domTree":14,"./fontMetrics":16,"./utils":22}],11:[function(require,module,exports){ -/** - * 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 Options = require("./Options"); -var ParseError = require("./ParseError"); -var Settings = require("../src/Settings"); -var Style = require("./Style"); -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 = { - 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; - }, - - 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; - }, - - bin: function(group) { - var node = new mathMLTree.MathNode( - "mo", [makeText(group.value, group.mode)]); - - return node; - }, - - rel: function(group) { - var node = new mathMLTree.MathNode( - "mo", [makeText(group.value, group.mode)]); - - return node; - }, - - open: function(group) { - var node = new mathMLTree.MathNode( - "mo", [makeText(group.value, group.mode)]); - - return node; - }, - - close: function(group) { - var node = new mathMLTree.MathNode( - "mo", [makeText(group.value, group.mode)]); - - return node; - }, - - inner: function(group) { - var node = new mathMLTree.MathNode( - "mo", [makeText(group.value, group.mode)]); - - return node; - }, - - punct: function(group) { - var node = new mathMLTree.MathNode( - "mo", [makeText(group.value, group.mode)]); - - node.setAttribute("separator", "true"); - - return node; - }, - - ordgroup: function(group, options) { - var inner = buildExpression(group.value, options); - - var node = new mathMLTree.MathNode("mrow", inner); - - return node; - }, - - text: function(group, options) { - var inner = buildExpression(group.value.body, options); - - var node = new mathMLTree.MathNode("mtext", inner); - - return node; - }, - - 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; - }, - - 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; - }, - - 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; - }, - - 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)]); - })); - })); - }, - - 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; - }, - - 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; - }, - - 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; - }, - - 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; - }, - - 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; - }, - - katex: function(group) { - var node = new mathMLTree.MathNode( - "mtext", [new mathMLTree.TextNode("KaTeX")]); - - return node; - }, - - font: function(group, options) { - var font = group.value.font; - var node = buildGroup(group.value.body, options.withFont(font)); - return node; - }, - - 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; - }, - - 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; - }, - - 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; - }, - - 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; - }, - - 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; - }, - - 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; - }, - - rlap: function(group, options) { - var node = new mathMLTree.MathNode( - "mpadded", [buildGroup(group.value.body, options)]); - - node.setAttribute("width", "0px"); - - return node; - }, - - 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, 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" - }); - - 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; - -},{"../src/Settings":7,"./Options":4,"./ParseError":5,"./Style":8,"./buildCommon":9,"./fontMetrics":16,"./mathMLTree":18,"./symbols":21,"./utils":22}],12:[function(require,module,exports){ - -var buildHTML = require("./buildHTML"); -var buildMathML = require("./buildMathML"); -var buildCommon = require("./buildCommon"); - -var makeSpan = buildCommon.makeSpan; - -var buildTree = function(tree, expression, settings) { - // `buildHTML` sometimes messes with the parse tree (like turning bins -> - // ords), so we build the MathML version first. - var mathMLNode = buildMathML(tree, expression, settings); - var htmlNode = buildHTML(tree, settings); - - var katexNode = makeSpan(["katex"], [ - mathMLNode, htmlNode - ]); - - if (settings.displayMode) { - return makeSpan(["katex-display"], [katexNode]); - } else { - return katexNode; - } -}; - -module.exports = buildTree; - -},{"./buildCommon":9,"./buildHTML":10,"./buildMathML":11}],13:[function(require,module,exports){ -/** - * 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, middle, repeat, 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 === "\\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" -]; - -// and delimiters that never stack -var stackNeverDelimiters = [ - "<", ">", "\\langle", "\\rangle", "/", "\\backslash" -]; - -// 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 = "\\langle"; - } else if (delim === ">") { - 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 = "\\langle"; - } else if (delim === ">") { - 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 -}; - -},{"./ParseError":5,"./Style":8,"./buildCommon":9,"./fontMetrics":16,"./symbols":21,"./utils":22}],14:[function(require,module,exports){ -/** - * 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 -}; - -},{"./utils":22}],15:[function(require,module,exports){ -var fontMetrics = require("./fontMetrics"); -var parseData = require("./parseData"); -var ParseError = require("./ParseError"); - -var ParseNode = parseData.ParseNode; -var ParseResult = parseData.ParseResult; - -/** - * 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, pos, mode, result) { - var row = [], body = [row], rowGaps = []; - while (true) { - var cell = parser.parseExpression(pos, mode, false, null); - row.push(new ParseNode("ordgroup", cell.result, mode)); - pos = cell.position; - var next = cell.peek.text; - if (next === "&") { - pos = cell.peek.position; - } else if (next === "\\end") { - break; - } else if (next === "\\\\" || next === "\\cr") { - var cr = parser.parseFunction(pos, mode); - rowGaps.push(cr.result.value.size); - pos = cr.position; - row = []; - body.push(row); - } else { - throw new ParseError("Expected & or \\\\ or \\end", - parser.lexer, cell.peek.position); - } - } - result.body = body; - result.rowGaps = rowGaps; - return new ParseResult(new ParseNode(result.type, result, mode), pos); -} - -/* - * An environment definition is very similar to a function definition. - * Each element of the following array may contain - * - names: The names associated with a function. This can be used to - * share one implementation between several similar environments. - * - 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 - * - handler: The function that is called to handle this environment. - * It will receive the following arguments: - * - pos: the current position of the parser. - * - mode: the current parsing mode. - * - envName: the name of the environment, one of the listed names. - * - [args]: the arguments passed to \begin. - * - positions: the positions associated with these arguments. - */ - -var environmentDefinitions = [ - - // Arrays are part of LaTeX, defined in lttab.dtx so its documentation - // is part of the source2e.pdf file of LaTeX2e source documentation. - { - names: ["array"], - numArgs: 1, - handler: function(pos, mode, envName, colalign, positions) { - var parser = this; - // Currently only supports alignment, no separators like | yet. - colalign = colalign.value.map ? colalign.value : [colalign]; - var cols = colalign.map(function(node) { - var ca = node.value; - if ("lcr".indexOf(ca) !== -1) { - return { - align: ca - }; - } - throw new ParseError( - "Unknown column alignment: " + node.value, - parser.lexer, positions[1]); - }); - var res = { - type: "array", - cols: cols, - hskipBeforeAndAfter: true // \@preamble in lttab.dtx - }; - res = parseArray(parser, pos, mode, res); - return res; - } - }, - - // The matrix environments of amsmath builds on the array environment - // of LaTeX, which is discussed above. - { - names: [ - "matrix", - "pmatrix", - "bmatrix", - "Bmatrix", - "vmatrix", - "Vmatrix" - ], - handler: function(pos, mode, envName) { - var delimiters = { - "matrix": null, - "pmatrix": ["(", ")"], - "bmatrix": ["[", "]"], - "Bmatrix": ["\\{", "\\}"], - "vmatrix": ["|", "|"], - "Vmatrix": ["\\Vert", "\\Vert"] - }[envName]; - var res = { - type: "array", - hskipBeforeAndAfter: false // \hskip -\arraycolsep in amsmath - }; - res = parseArray(this, pos, mode, res); - if (delimiters) { - res.result = new ParseNode("leftright", { - body: [res.result], - left: delimiters[0], - right: delimiters[1] - }, 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. - { - names: ["cases"], - handler: function(pos, mode, envName) { - var res = { - type: "array", - arraystretch: 1.2, - cols: [{ - align: "l", - pregap: 0, - postgap: fontMetrics.metrics.quad - }, { - align: "l", - pregap: 0, - postgap: 0 - }] - }; - res = parseArray(this, pos, mode, res); - res.result = new ParseNode("leftright", { - body: [res.result], - left: "\\{", - right: "." - }, mode); - return res; - } - } -]; - -module.exports = (function() { - // nested function so we don't leak i and j into the module scope - var exports = {}; - for (var i = 0; i < environmentDefinitions.length; ++i) { - var def = environmentDefinitions[i]; - def.greediness = 1; - def.allowedInText = !!def.allowedInText; - def.numArgs = def.numArgs || 0; - def.numOptionalArgs = def.numOptionalArgs || 0; - for (var j = 0; j < def.names.length; ++j) { - exports[def.names[j]] = def; - } - } - return exports; -})(); - -},{"./ParseError":5,"./fontMetrics":16,"./parseData":19}],16:[function(require,module,exports){ -/* jshint unused:false */ - -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; - -/** - * 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, - - // 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`. 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- -/** - * This function is a convience function for looking up information in the - * metricMap table. It takes a character as a string, and a style - */ -var getCharacterMetrics = function(character, style) { - return metricMap[style][character.charCodeAt(0)]; -}; - -module.exports = { - metrics: metrics, - getCharacterMetrics: getCharacterMetrics -}; - -},{"./Style":8}],17:[function(require,module,exports){ -var utils = require("./utils"); -var ParseError = require("./ParseError"); - -// This file contains a list of functions that we parse. The functions map -// contains the following data: - -/* - * Keys are the name of the functions to parse - * The data contains the following keys: - * - numArgs: The number of arguments the function takes. - * - 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) - * - handler: The function that is called to handle this function and its - * arguments. The arguments are: - * - func: the text of the function - * - [args]: the next arguments are the arguments to the function, - * of which there are numArgs of them - * - positions: the positions in the overall string of the function - * and the arguments. 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`. - */ - -var functions = { - // A normal square root - "\\sqrt": { - numArgs: 1, - numOptionalArgs: 1, - handler: function(func, index, body, positions) { - return { - type: "sqrt", - body: body, - index: index - }; - } - }, - - // Some non-mathy text - "\\text": { - numArgs: 1, - argTypes: ["text"], - greediness: 2, - handler: function(func, body) { - // 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 - "\\color": { - numArgs: 2, - allowedInText: true, - greediness: 3, - argTypes: ["color", "original"], - handler: function(func, color, body) { - // 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 - "\\overline": { - numArgs: 1, - handler: function(func, body) { - return { - type: "overline", - body: body - }; - } - }, - - // A box of the width and height - "\\rule": { - numArgs: 2, - numOptionalArgs: 1, - argTypes: ["size", "size", "size"], - handler: function(func, shift, width, height) { - return { - type: "rule", - shift: shift && shift.value, - width: width.value, - height: height.value - }; - } - }, - - // A KaTeX logo - "\\KaTeX": { - numArgs: 0, - handler: function(func) { - return { - type: "katex" - }; - } - }, - - "\\phantom": { - numArgs: 1, - handler: function(func, body) { - 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", - "/", "\\backslash", - "|", "\\vert", "\\|", "\\Vert", - "\\uparrow", "\\Uparrow", - "\\downarrow", "\\Downarrow", - "\\updownarrow", "\\Updownarrow", - "." -]; - -var fontAliases = { - // amstex.sty - "\\frak": "\\mathfrak", - "\\Bbb": "\\mathbb", - "\\bold": "\\mathbf", - // article.cls - "\\rm": "\\mathrm", - "\\sf": "\\mathsf", - "\\tt": "\\mathtt", - "\\bf": "\\mathbf", - "\\it": "\\mathit", - "\\cal": "\\mathcal" -}; - -/* - * This is a list of functions which each have the same function but have - * different names so that we don't have to duplicate the data a bunch of times. - * Each element in the list is an object with the following keys: - * - funcs: A list of function names to be associated with the data - * - data: An objecty with the same data as in each value of the `function` - * table above - */ -var duplicatedFunctions = [ - // Single-argument color functions - { - funcs: [ - "\\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" - ], - data: { - numArgs: 1, - allowedInText: true, - greediness: 3, - handler: function(func, body) { - var atoms; - if (body.type === "ordgroup") { - atoms = body.value; - } else { - atoms = [body]; - } - - return { - type: "color", - color: "katex-" + func.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 - { - funcs: [ - "\\arcsin", "\\arccos", "\\arctan", "\\arg", "\\cos", "\\cosh", - "\\cot", "\\coth", "\\csc", "\\deg", "\\dim", "\\exp", "\\hom", - "\\ker", "\\lg", "\\ln", "\\log", "\\sec", "\\sin", "\\sinh", - "\\tan","\\tanh" - ], - data: { - numArgs: 0, - handler: function(func) { - return { - type: "op", - limits: false, - symbol: false, - body: func - }; - } - } - }, - - // Limits, not symbols - { - funcs: [ - "\\det", "\\gcd", "\\inf", "\\lim", "\\liminf", "\\limsup", "\\max", - "\\min", "\\Pr", "\\sup" - ], - data: { - numArgs: 0, - handler: function(func) { - return { - type: "op", - limits: true, - symbol: false, - body: func - }; - } - } - }, - - // No limits, symbols - { - funcs: [ - "\\int", "\\iint", "\\iiint", "\\oint" - ], - data: { - numArgs: 0, - handler: function(func) { - return { - type: "op", - limits: false, - symbol: true, - body: func - }; - } - } - }, - - // Limits, symbols - { - funcs: [ - "\\coprod", "\\bigvee", "\\bigwedge", "\\biguplus", "\\bigcap", - "\\bigcup", "\\intop", "\\prod", "\\sum", "\\bigotimes", - "\\bigoplus", "\\bigodot", "\\bigsqcup", "\\smallint" - ], - data: { - numArgs: 0, - handler: function(func) { - return { - type: "op", - limits: true, - symbol: true, - body: func - }; - } - } - }, - - // Fractions - { - funcs: [ - "\\dfrac", "\\frac", "\\tfrac", - "\\dbinom", "\\binom", "\\tbinom" - ], - data: { - numArgs: 2, - greediness: 2, - handler: function(func, numer, denom) { - var hasBarLine; - var leftDelim = null; - var rightDelim = null; - var size = "auto"; - - switch (func) { - 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 (func) { - 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 - { - funcs: ["\\llap", "\\rlap"], - data: { - numArgs: 1, - allowedInText: true, - handler: function(func, body) { - return { - type: func.slice(1), - body: body - }; - } - } - }, - - // Delimiter functions - { - funcs: [ - "\\bigl", "\\Bigl", "\\biggl", "\\Biggl", - "\\bigr", "\\Bigr", "\\biggr", "\\Biggr", - "\\bigm", "\\Bigm", "\\biggm", "\\Biggm", - "\\big", "\\Big", "\\bigg", "\\Bigg", - "\\left", "\\right" - ], - data: { - numArgs: 1, - handler: function(func, delim, positions) { - if (!utils.contains(delimiters, delim.value)) { - throw new ParseError( - "Invalid delimiter: '" + delim.value + "' after '" + - func + "'", - this.lexer, positions[1]); - } - - // \left and \right are caught somewhere in Parser.js, which is - // why this data doesn't match what is in buildHTML. - if (func === "\\left" || func === "\\right") { - return { - type: "leftright", - value: delim.value - }; - } else { - return { - type: "delimsizing", - size: delimiterSizes[func].size, - delimType: delimiterSizes[func].type, - value: delim.value - }; - } - } - } - }, - - // Sizing functions (handled in Parser.js explicitly, hence no handler) - { - funcs: [ - "\\tiny", "\\scriptsize", "\\footnotesize", "\\small", - "\\normalsize", "\\large", "\\Large", "\\LARGE", "\\huge", "\\Huge" - ], - data: { - numArgs: 0 - } - }, - - // Style changing functions (handled in Parser.js explicitly, hence no - // handler) - { - funcs: [ - "\\displaystyle", "\\textstyle", "\\scriptstyle", - "\\scriptscriptstyle" - ], - data: { - numArgs: 0 - } - }, - - { - funcs: [ - // styles - "\\mathrm", "\\mathit", "\\mathbf", - - // families - "\\mathbb", "\\mathcal", "\\mathfrak", "\\mathscr", "\\mathsf", - "\\mathtt" - ], - data: { - numArgs: 1, - handler: function (func, body) { - if (func in fontAliases) { - func = fontAliases[func]; - } - return { - type: "font", - font: func.slice(1), - body: body - }; - } - } - }, - - // Accents - { - funcs: [ - "\\acute", "\\grave", "\\ddot", "\\tilde", "\\bar", "\\breve", - "\\check", "\\hat", "\\vec", "\\dot" - // We don't support expanding accents yet - // "\\widetilde", "\\widehat" - ], - data: { - numArgs: 1, - handler: function(func, base) { - return { - type: "accent", - accent: func, - base: base - }; - } - } - }, - - // Infix generalized fractions - { - funcs: ["\\over", "\\choose"], - data: { - numArgs: 0, - handler: function (func) { - var replaceWith; - switch (func) { - 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 - { - funcs: ["\\\\", "\\cr"], - data: { - numArgs: 0, - numOptionalArgs: 1, - argTypes: ["size"], - handler: function(func, size) { - return { - type: "cr", - size: size - }; - } - } - }, - - // Environment delimiters - { - funcs: ["\\begin", "\\end"], - data: { - numArgs: 1, - argTypes: ["text"], - handler: function(func, nameGroup, positions) { - if (nameGroup.type !== "ordgroup") { - throw new ParseError( - "Invalid environment name", - this.lexer, positions[1]); - } - var name = ""; - for (var i = 0; i < nameGroup.value.length; ++i) { - name += nameGroup.value[i].value; - } - return { - type: "environment", - name: name, - namepos: positions[1] - }; - } - } - } -]; - -var addFuncsWithData = function(funcs, data) { - for (var i = 0; i < funcs.length; i++) { - functions[funcs[i]] = data; - } -}; - -// Add all of the functions in duplicatedFunctions to the functions map -for (var i = 0; i < duplicatedFunctions.length; i++) { - addFuncsWithData(duplicatedFunctions[i].funcs, duplicatedFunctions[i].data); -} - -// Set default values of functions -for (var f in functions) { - if (functions.hasOwnProperty(f)) { - var func = functions[f]; - - functions[f] = { - numArgs: func.numArgs, - argTypes: func.argTypes, - greediness: (func.greediness === undefined) ? 1 : func.greediness, - allowedInText: func.allowedInText ? func.allowedInText : false, - numOptionalArgs: (func.numOptionalArgs === undefined) ? 0 : - func.numOptionalArgs, - handler: func.handler - }; - } -} - -module.exports = { - funcs: functions -}; - -},{"./ParseError":5,"./utils":22}],18:[function(require,module,exports){ -/** - * 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 -}; - -},{"./utils":22}],19:[function(require,module,exports){ -/** - * The resulting parse tree nodes of the parse tree. - */ -function ParseNode(type, value, mode) { - this.type = type; - this.value = value; - this.mode = mode; -} - -/** - * A result and final position returned by the `.parse...` functions. - * - */ -function ParseResult(result, newPosition, peek) { - this.result = result; - this.position = newPosition; -} - -module.exports = { - ParseNode: ParseNode, - ParseResult: ParseResult -}; - - -},{}],20:[function(require,module,exports){ -/** - * 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; - -},{"./Parser":6}],21:[function(require,module,exports){ -/** - * 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). - * - replace (optional): 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"). - */ - -var symbols = { - "math": { - // Relation Symbols - "\\equiv": { - font: "main", - group: "rel", - replace: "\u2261" - }, - "\\prec": { - font: "main", - group: "rel", - replace: "\u227a" - }, - "\\succ": { - font: "main", - group: "rel", - replace: "\u227b" - }, - "\\sim": { - font: "main", - group: "rel", - replace: "\u223c" - }, - "\\perp": { - font: "main", - group: "rel", - replace: "\u22a5" - }, - "\\preceq": { - font: "main", - group: "rel", - replace: "\u2aaf" - }, - "\\succeq": { - font: "main", - group: "rel", - replace: "\u2ab0" - }, - "\\simeq": { - font: "main", - group: "rel", - replace: "\u2243" - }, - "\\mid": { - font: "main", - group: "rel", - replace: "\u2223" - }, - "\\ll": { - font: "main", - group: "rel", - replace: "\u226a" - }, - "\\gg": { - font: "main", - group: "rel", - replace: "\u226b" - }, - "\\asymp": { - font: "main", - group: "rel", - replace: "\u224d" - }, - "\\parallel": { - font: "main", - group: "rel", - replace: "\u2225" - }, - "\\bowtie": { - font: "main", - group: "rel", - replace: "\u22c8" - }, - "\\smile": { - font: "main", - group: "rel", - replace: "\u2323" - }, - "\\sqsubseteq": { - font: "main", - group: "rel", - replace: "\u2291" - }, - "\\sqsupseteq": { - font: "main", - group: "rel", - replace: "\u2292" - }, - "\\doteq": { - font: "main", - group: "rel", - replace: "\u2250" - }, - "\\frown": { - font: "main", - group: "rel", - replace: "\u2322" - }, - "\\ni": { - font: "main", - group: "rel", - replace: "\u220b" - }, - "\\propto": { - font: "main", - group: "rel", - replace: "\u221d" - }, - "\\vdash": { - font: "main", - group: "rel", - replace: "\u22a2" - }, - "\\dashv": { - font: "main", - group: "rel", - replace: "\u22a3" - }, - "\\owns": { - font: "main", - group: "rel", - replace: "\u220b" - }, - - // Punctuation - "\\ldotp": { - font: "main", - group: "punct", - replace: "\u002e" - }, - "\\cdotp": { - font: "main", - group: "punct", - replace: "\u22c5" - }, - - // Misc Symbols - "\\#": { - font: "main", - group: "textord", - replace: "\u0023" - }, - "\\&": { - font: "main", - group: "textord", - replace: "\u0026" - }, - "\\aleph": { - font: "main", - group: "textord", - replace: "\u2135" - }, - "\\forall": { - font: "main", - group: "textord", - replace: "\u2200" - }, - "\\hbar": { - font: "main", - group: "textord", - replace: "\u210f" - }, - "\\exists": { - font: "main", - group: "textord", - replace: "\u2203" - }, - "\\nabla": { - font: "main", - group: "textord", - replace: "\u2207" - }, - "\\flat": { - font: "main", - group: "textord", - replace: "\u266d" - }, - "\\ell": { - font: "main", - group: "textord", - replace: "\u2113" - }, - "\\natural": { - font: "main", - group: "textord", - replace: "\u266e" - }, - "\\clubsuit": { - font: "main", - group: "textord", - replace: "\u2663" - }, - "\\wp": { - font: "main", - group: "textord", - replace: "\u2118" - }, - "\\sharp": { - font: "main", - group: "textord", - replace: "\u266f" - }, - "\\diamondsuit": { - font: "main", - group: "textord", - replace: "\u2662" - }, - "\\Re": { - font: "main", - group: "textord", - replace: "\u211c" - }, - "\\heartsuit": { - font: "main", - group: "textord", - replace: "\u2661" - }, - "\\Im": { - font: "main", - group: "textord", - replace: "\u2111" - }, - "\\spadesuit": { - font: "main", - group: "textord", - replace: "\u2660" - }, - - // Math and Text - "\\dag": { - font: "main", - group: "textord", - replace: "\u2020" - }, - "\\ddag": { - font: "main", - group: "textord", - replace: "\u2021" - }, - - // Large Delimiters - "\\rmoustache": { - font: "main", - group: "close", - replace: "\u23b1" - }, - "\\lmoustache": { - font: "main", - group: "open", - replace: "\u23b0" - }, - "\\rgroup": { - font: "main", - group: "close", - replace: "\u27ef" - }, - "\\lgroup": { - font: "main", - group: "open", - replace: "\u27ee" - }, - - // Binary Operators - "\\mp": { - font: "main", - group: "bin", - replace: "\u2213" - }, - "\\ominus": { - font: "main", - group: "bin", - replace: "\u2296" - }, - "\\uplus": { - font: "main", - group: "bin", - replace: "\u228e" - }, - "\\sqcap": { - font: "main", - group: "bin", - replace: "\u2293" - }, - "\\ast": { - font: "main", - group: "bin", - replace: "\u2217" - }, - "\\sqcup": { - font: "main", - group: "bin", - replace: "\u2294" - }, - "\\bigcirc": { - font: "main", - group: "bin", - replace: "\u25ef" - }, - "\\bullet": { - font: "main", - group: "bin", - replace: "\u2219" - }, - "\\ddagger": { - font: "main", - group: "bin", - replace: "\u2021" - }, - "\\wr": { - font: "main", - group: "bin", - replace: "\u2240" - }, - "\\amalg": { - font: "main", - group: "bin", - replace: "\u2a3f" - }, - - // Arrow Symbols - "\\longleftarrow": { - font: "main", - group: "rel", - replace: "\u27f5" - }, - "\\Leftarrow": { - font: "main", - group: "rel", - replace: "\u21d0" - }, - "\\Longleftarrow": { - font: "main", - group: "rel", - replace: "\u27f8" - }, - "\\longrightarrow": { - font: "main", - group: "rel", - replace: "\u27f6" - }, - "\\Rightarrow": { - font: "main", - group: "rel", - replace: "\u21d2" - }, - "\\Longrightarrow": { - font: "main", - group: "rel", - replace: "\u27f9" - }, - "\\leftrightarrow": { - font: "main", - group: "rel", - replace: "\u2194" - }, - "\\longleftrightarrow": { - font: "main", - group: "rel", - replace: "\u27f7" - }, - "\\Leftrightarrow": { - font: "main", - group: "rel", - replace: "\u21d4" - }, - "\\Longleftrightarrow": { - font: "main", - group: "rel", - replace: "\u27fa" - }, - "\\mapsto": { - font: "main", - group: "rel", - replace: "\u21a6" - }, - "\\longmapsto": { - font: "main", - group: "rel", - replace: "\u27fc" - }, - "\\nearrow": { - font: "main", - group: "rel", - replace: "\u2197" - }, - "\\hookleftarrow": { - font: "main", - group: "rel", - replace: "\u21a9" - }, - "\\hookrightarrow": { - font: "main", - group: "rel", - replace: "\u21aa" - }, - "\\searrow": { - font: "main", - group: "rel", - replace: "\u2198" - }, - "\\leftharpoonup": { - font: "main", - group: "rel", - replace: "\u21bc" - }, - "\\rightharpoonup": { - font: "main", - group: "rel", - replace: "\u21c0" - }, - "\\swarrow": { - font: "main", - group: "rel", - replace: "\u2199" - }, - "\\leftharpoondown": { - font: "main", - group: "rel", - replace: "\u21bd" - }, - "\\rightharpoondown": { - font: "main", - group: "rel", - replace: "\u21c1" - }, - "\\nwarrow": { - font: "main", - group: "rel", - replace: "\u2196" - }, - "\\rightleftharpoons": { - font: "main", - group: "rel", - replace: "\u21cc" - }, - - // AMS Negated Binary Relations - "\\nless": { - font: "ams", - group: "rel", - replace: "\u226e" - }, - "\\nleqslant": { - font: "ams", - group: "rel", - replace: "\ue010" - }, - "\\nleqq": { - font: "ams", - group: "rel", - replace: "\ue011" - }, - "\\lneq": { - font: "ams", - group: "rel", - replace: "\u2a87" - }, - "\\lneqq": { - font: "ams", - group: "rel", - replace: "\u2268" - }, - "\\lvertneqq": { - font: "ams", - group: "rel", - replace: "\ue00c" - }, - "\\lnsim": { - font: "ams", - group: "rel", - replace: "\u22e6" - }, - "\\lnapprox": { - font: "ams", - group: "rel", - replace: "\u2a89" - }, - "\\nprec": { - font: "ams", - group: "rel", - replace: "\u2280" - }, - "\\npreceq": { - font: "ams", - group: "rel", - replace: "\u22e0" - }, - "\\precnsim": { - font: "ams", - group: "rel", - replace: "\u22e8" - }, - "\\precnapprox": { - font: "ams", - group: "rel", - replace: "\u2ab9" - }, - "\\nsim": { - font: "ams", - group: "rel", - replace: "\u2241" - }, - "\\nshortmid": { - font: "ams", - group: "rel", - replace: "\ue006" - }, - "\\nmid": { - font: "ams", - group: "rel", - replace: "\u2224" - }, - "\\nvdash": { - font: "ams", - group: "rel", - replace: "\u22ac" - }, - "\\nvDash": { - font: "ams", - group: "rel", - replace: "\u22ad" - }, - "\\ntriangleleft": { - font: "ams", - group: "rel", - replace: "\u22ea" - }, - "\\ntrianglelefteq": { - font: "ams", - group: "rel", - replace: "\u22ec" - }, - "\\subsetneq": { - font: "ams", - group: "rel", - replace: "\u228a" - }, - "\\varsubsetneq": { - font: "ams", - group: "rel", - replace: "\ue01a" - }, - "\\subsetneqq": { - font: "ams", - group: "rel", - replace: "\u2acb" - }, - "\\varsubsetneqq": { - font: "ams", - group: "rel", - replace: "\ue017" - }, - "\\ngtr": { - font: "ams", - group: "rel", - replace: "\u226f" - }, - "\\ngeqslant": { - font: "ams", - group: "rel", - replace: "\ue00f" - }, - "\\ngeqq": { - font: "ams", - group: "rel", - replace: "\ue00e" - }, - "\\gneq": { - font: "ams", - group: "rel", - replace: "\u2a88" - }, - "\\gneqq": { - font: "ams", - group: "rel", - replace: "\u2269" - }, - "\\gvertneqq": { - font: "ams", - group: "rel", - replace: "\ue00d" - }, - "\\gnsim": { - font: "ams", - group: "rel", - replace: "\u22e7" - }, - "\\gnapprox": { - font: "ams", - group: "rel", - replace: "\u2a8a" - }, - "\\nsucc": { - font: "ams", - group: "rel", - replace: "\u2281" - }, - "\\nsucceq": { - font: "ams", - group: "rel", - replace: "\u22e1" - }, - "\\succnsim": { - font: "ams", - group: "rel", - replace: "\u22e9" - }, - "\\succnapprox": { - font: "ams", - group: "rel", - replace: "\u2aba" - }, - "\\ncong": { - font: "ams", - group: "rel", - replace: "\u2246" - }, - "\\nshortparallel": { - font: "ams", - group: "rel", - replace: "\ue007" - }, - "\\nparallel": { - font: "ams", - group: "rel", - replace: "\u2226" - }, - "\\nVDash": { - font: "ams", - group: "rel", - replace: "\u22af" - }, - "\\ntriangleright": { - font: "ams", - group: "rel", - replace: "\u22eb" - }, - "\\ntrianglerighteq": { - font: "ams", - group: "rel", - replace: "\u22ed" - }, - "\\nsupseteqq": { - font: "ams", - group: "rel", - replace: "\ue018" - }, - "\\supsetneq": { - font: "ams", - group: "rel", - replace: "\u228b" - }, - "\\varsupsetneq": { - font: "ams", - group: "rel", - replace: "\ue01b" - }, - "\\supsetneqq": { - font: "ams", - group: "rel", - replace: "\u2acc" - }, - "\\varsupsetneqq": { - font: "ams", - group: "rel", - replace: "\ue019" - }, - "\\nVdash": { - font: "ams", - group: "rel", - replace: "\u22ae" - }, - "\\precneqq": { - font: "ams", - group: "rel", - replace: "\u2ab5" - }, - "\\succneqq": { - font: "ams", - group: "rel", - replace: "\u2ab6" - }, - "\\nsubseteqq": { - font: "ams", - group: "rel", - replace: "\ue016" - }, - "\\unlhd": { - font: "ams", - group: "bin", - replace: "\u22b4" - }, - "\\unrhd": { - font: "ams", - group: "bin", - replace: "\u22b5" - }, - - // AMS Negated Arrows - "\\nleftarrow": { - font: "ams", - group: "rel", - replace: "\u219a" - }, - "\\nrightarrow": { - font: "ams", - group: "rel", - replace: "\u219b" - }, - "\\nLeftarrow": { - font: "ams", - group: "rel", - replace: "\u21cd" - }, - "\\nRightarrow": { - font: "ams", - group: "rel", - replace: "\u21cf" - }, - "\\nleftrightarrow": { - font: "ams", - group: "rel", - replace: "\u21ae" - }, - "\\nLeftrightarrow": { - font: "ams", - group: "rel", - replace: "\u21ce" - }, - - // AMS Misc - "\\vartriangle": { - font: "ams", - group: "rel", - replace: "\u25b3" - }, - "\\hslash": { - font: "ams", - group: "textord", - replace: "\u210f" - }, - "\\triangledown": { - font: "ams", - group: "textord", - replace: "\u25bd" - }, - "\\lozenge": { - font: "ams", - group: "textord", - replace: "\u25ca" - }, - "\\circledS": { - font: "ams", - group: "textord", - replace: "\u24c8" - }, - "\\circledR": { - font: "ams", - group: "textord", - replace: "\u00ae" - }, - "\\measuredangle": { - font: "ams", - group: "textord", - replace: "\u2221" - }, - "\\nexists": { - font: "ams", - group: "textord", - replace: "\u2204" - }, - "\\mho": { - font: "ams", - group: "textord", - replace: "\u2127" - }, - "\\Finv": { - font: "ams", - group: "textord", - replace: "\u2132" - }, - "\\Game": { - font: "ams", - group: "textord", - replace: "\u2141" - }, - "\\Bbbk": { - font: "ams", - group: "textord", - replace: "\u006b" - }, - "\\backprime": { - font: "ams", - group: "textord", - replace: "\u2035" - }, - "\\blacktriangle": { - font: "ams", - group: "textord", - replace: "\u25b2" - }, - "\\blacktriangledown": { - font: "ams", - group: "textord", - replace: "\u25bc" - }, - "\\blacksquare": { - font: "ams", - group: "textord", - replace: "\u25a0" - }, - "\\blacklozenge": { - font: "ams", - group: "textord", - replace: "\u29eb" - }, - "\\bigstar": { - font: "ams", - group: "textord", - replace: "\u2605" - }, - "\\sphericalangle": { - font: "ams", - group: "textord", - replace: "\u2222" - }, - "\\complement": { - font: "ams", - group: "textord", - replace: "\u2201" - }, - "\\eth": { - font: "ams", - group: "textord", - replace: "\u00f0" - }, - "\\diagup": { - font: "ams", - group: "textord", - replace: "\u2571" - }, - "\\diagdown": { - font: "ams", - group: "textord", - replace: "\u2572" - }, - "\\square": { - font: "ams", - group: "textord", - replace: "\u25a1" - }, - "\\Box": { - font: "ams", - group: "textord", - replace: "\u25a1" - }, - "\\Diamond": { - font: "ams", - group: "textord", - replace: "\u25ca" - }, - "\\yen": { - font: "ams", - group: "textord", - replace: "\u00a5" - }, - "\\checkmark": { - font: "ams", - group: "textord", - replace: "\u2713" - }, - - // AMS Hebrew - "\\beth": { - font: "ams", - group: "textord", - replace: "\u2136" - }, - "\\daleth": { - font: "ams", - group: "textord", - replace: "\u2138" - }, - "\\gimel": { - font: "ams", - group: "textord", - replace: "\u2137" - }, - - // AMS Greek - "\\digamma": { - font: "ams", - group: "textord", - replace: "\u03dd" - }, - "\\varkappa": { - font: "ams", - group: "textord", - replace: "\u03f0" - }, - - // AMS Delimiters - "\\ulcorner": { - font: "ams", - group: "textord", - replace: "\u250c" - }, - "\\urcorner": { - font: "ams", - group: "textord", - replace: "\u2510" - }, - "\\llcorner": { - font: "ams", - group: "textord", - replace: "\u2514" - }, - "\\lrcorner": { - font: "ams", - group: "textord", - replace: "\u2518" - }, - - // AMS Binary Relations - "\\leqq": { - font: "ams", - group: "rel", - replace: "\u2266" - }, - "\\leqslant": { - font: "ams", - group: "rel", - replace: "\u2a7d" - }, - "\\eqslantless": { - font: "ams", - group: "rel", - replace: "\u2a95" - }, - "\\lesssim": { - font: "ams", - group: "rel", - replace: "\u2272" - }, - "\\lessapprox": { - font: "ams", - group: "rel", - replace: "\u2a85" - }, - "\\approxeq": { - font: "ams", - group: "rel", - replace: "\u224a" - }, - "\\lessdot": { - font: "ams", - group: "bin", - replace: "\u22d6" - }, - "\\lll": { - font: "ams", - group: "rel", - replace: "\u22d8" - }, - "\\lessgtr": { - font: "ams", - group: "rel", - replace: "\u2276" - }, - "\\lesseqgtr": { - font: "ams", - group: "rel", - replace: "\u22da" - }, - "\\lesseqqgtr": { - font: "ams", - group: "rel", - replace: "\u2a8b" - }, - "\\doteqdot": { - font: "ams", - group: "rel", - replace: "\u2251" - }, - "\\risingdotseq": { - font: "ams", - group: "rel", - replace: "\u2253" - }, - "\\fallingdotseq": { - font: "ams", - group: "rel", - replace: "\u2252" - }, - "\\backsim": { - font: "ams", - group: "rel", - replace: "\u223d" - }, - "\\backsimeq": { - font: "ams", - group: "rel", - replace: "\u22cd" - }, - "\\subseteqq": { - font: "ams", - group: "rel", - replace: "\u2ac5" - }, - "\\Subset": { - font: "ams", - group: "rel", - replace: "\u22d0" - }, - "\\sqsubset": { - font: "ams", - group: "rel", - replace: "\u228f" - }, - "\\preccurlyeq": { - font: "ams", - group: "rel", - replace: "\u227c" - }, - "\\curlyeqprec": { - font: "ams", - group: "rel", - replace: "\u22de" - }, - "\\precsim": { - font: "ams", - group: "rel", - replace: "\u227e" - }, - "\\precapprox": { - font: "ams", - group: "rel", - replace: "\u2ab7" - }, - "\\vartriangleleft": { - font: "ams", - group: "rel", - replace: "\u22b2" - }, - "\\trianglelefteq": { - font: "ams", - group: "rel", - replace: "\u22b4" - }, - "\\vDash": { - font: "ams", - group: "rel", - replace: "\u22a8" - }, - "\\Vvdash": { - font: "ams", - group: "rel", - replace: "\u22aa" - }, - "\\smallsmile": { - font: "ams", - group: "rel", - replace: "\u2323" - }, - "\\smallfrown": { - font: "ams", - group: "rel", - replace: "\u2322" - }, - "\\bumpeq": { - font: "ams", - group: "rel", - replace: "\u224f" - }, - "\\Bumpeq": { - font: "ams", - group: "rel", - replace: "\u224e" - }, - "\\geqq": { - font: "ams", - group: "rel", - replace: "\u2267" - }, - "\\geqslant": { - font: "ams", - group: "rel", - replace: "\u2a7e" - }, - "\\eqslantgtr": { - font: "ams", - group: "rel", - replace: "\u2a96" - }, - "\\gtrsim": { - font: "ams", - group: "rel", - replace: "\u2273" - }, - "\\gtrapprox": { - font: "ams", - group: "rel", - replace: "\u2a86" - }, - "\\gtrdot": { - font: "ams", - group: "bin", - replace: "\u22d7" - }, - "\\ggg": { - font: "ams", - group: "rel", - replace: "\u22d9" - }, - "\\gtrless": { - font: "ams", - group: "rel", - replace: "\u2277" - }, - "\\gtreqless": { - font: "ams", - group: "rel", - replace: "\u22db" - }, - "\\gtreqqless": { - font: "ams", - group: "rel", - replace: "\u2a8c" - }, - "\\eqcirc": { - font: "ams", - group: "rel", - replace: "\u2256" - }, - "\\circeq": { - font: "ams", - group: "rel", - replace: "\u2257" - }, - "\\triangleq": { - font: "ams", - group: "rel", - replace: "\u225c" - }, - "\\thicksim": { - font: "ams", - group: "rel", - replace: "\u223c" - }, - "\\thickapprox": { - font: "ams", - group: "rel", - replace: "\u2248" - }, - "\\supseteqq": { - font: "ams", - group: "rel", - replace: "\u2ac6" - }, - "\\Supset": { - font: "ams", - group: "rel", - replace: "\u22d1" - }, - "\\sqsupset": { - font: "ams", - group: "rel", - replace: "\u2290" - }, - "\\succcurlyeq": { - font: "ams", - group: "rel", - replace: "\u227d" - }, - "\\curlyeqsucc": { - font: "ams", - group: "rel", - replace: "\u22df" - }, - "\\succsim": { - font: "ams", - group: "rel", - replace: "\u227f" - }, - "\\succapprox": { - font: "ams", - group: "rel", - replace: "\u2ab8" - }, - "\\vartriangleright": { - font: "ams", - group: "rel", - replace: "\u22b3" - }, - "\\trianglerighteq": { - font: "ams", - group: "rel", - replace: "\u22b5" - }, - "\\Vdash": { - font: "ams", - group: "rel", - replace: "\u22a9" - }, - "\\shortmid": { - font: "ams", - group: "rel", - replace: "\u2223" - }, - "\\shortparallel": { - font: "ams", - group: "rel", - replace: "\u2225" - }, - "\\between": { - font: "ams", - group: "rel", - replace: "\u226c" - }, - "\\pitchfork": { - font: "ams", - group: "rel", - replace: "\u22d4" - }, - "\\varpropto": { - font: "ams", - group: "rel", - replace: "\u221d" - }, - "\\blacktriangleleft": { - font: "ams", - group: "rel", - replace: "\u25c0" - }, - "\\therefore": { - font: "ams", - group: "rel", - replace: "\u2234" - }, - "\\backepsilon": { - font: "ams", - group: "rel", - replace: "\u220d" - }, - "\\blacktriangleright": { - font: "ams", - group: "rel", - replace: "\u25b6" - }, - "\\because": { - font: "ams", - group: "rel", - replace: "\u2235" - }, - "\\llless": { - font: "ams", - group: "rel", - replace: "\u22d8" - }, - "\\gggtr": { - font: "ams", - group: "rel", - replace: "\u22d9" - }, - "\\lhd": { - font: "ams", - group: "bin", - replace: "\u22b2" - }, - "\\rhd": { - font: "ams", - group: "bin", - replace: "\u22b3" - }, - "\\eqsim": { - font: "ams", - group: "rel", - replace: "\u2242" - }, - "\\Join": { - font: "main", - group: "rel", - replace: "\u22c8" - }, - "\\Doteq": { - font: "ams", - group: "rel", - replace: "\u2251" - }, - - // AMS Binary Operators - "\\dotplus": { - font: "ams", - group: "bin", - replace: "\u2214" - }, - "\\smallsetminus": { - font: "ams", - group: "bin", - replace: "\u2216" - }, - "\\Cap": { - font: "ams", - group: "bin", - replace: "\u22d2" - }, - "\\Cup": { - font: "ams", - group: "bin", - replace: "\u22d3" - }, - "\\doublebarwedge": { - font: "ams", - group: "bin", - replace: "\u2a5e" - }, - "\\boxminus": { - font: "ams", - group: "bin", - replace: "\u229f" - }, - "\\boxplus": { - font: "ams", - group: "bin", - replace: "\u229e" - }, - "\\divideontimes": { - font: "ams", - group: "bin", - replace: "\u22c7" - }, - "\\ltimes": { - font: "ams", - group: "bin", - replace: "\u22c9" - }, - "\\rtimes": { - font: "ams", - group: "bin", - replace: "\u22ca" - }, - "\\leftthreetimes": { - font: "ams", - group: "bin", - replace: "\u22cb" - }, - "\\rightthreetimes": { - font: "ams", - group: "bin", - replace: "\u22cc" - }, - "\\curlywedge": { - font: "ams", - group: "bin", - replace: "\u22cf" - }, - "\\curlyvee": { - font: "ams", - group: "bin", - replace: "\u22ce" - }, - "\\circleddash": { - font: "ams", - group: "bin", - replace: "\u229d" - }, - "\\circledast": { - font: "ams", - group: "bin", - replace: "\u229b" - }, - "\\centerdot": { - font: "ams", - group: "bin", - replace: "\u22c5" - }, - "\\intercal": { - font: "ams", - group: "bin", - replace: "\u22ba" - }, - "\\doublecap": { - font: "ams", - group: "bin", - replace: "\u22d2" - }, - "\\doublecup": { - font: "ams", - group: "bin", - replace: "\u22d3" - }, - "\\boxtimes": { - font: "ams", - group: "bin", - replace: "\u22a0" - }, - - // AMS Arrows - "\\dashrightarrow": { - font: "ams", - group: "rel", - replace: "\u21e2" - }, - "\\dashleftarrow": { - font: "ams", - group: "rel", - replace: "\u21e0" - }, - "\\leftleftarrows": { - font: "ams", - group: "rel", - replace: "\u21c7" - }, - "\\leftrightarrows": { - font: "ams", - group: "rel", - replace: "\u21c6" - }, - "\\Lleftarrow": { - font: "ams", - group: "rel", - replace: "\u21da" - }, - "\\twoheadleftarrow": { - font: "ams", - group: "rel", - replace: "\u219e" - }, - "\\leftarrowtail": { - font: "ams", - group: "rel", - replace: "\u21a2" - }, - "\\looparrowleft": { - font: "ams", - group: "rel", - replace: "\u21ab" - }, - "\\leftrightharpoons": { - font: "ams", - group: "rel", - replace: "\u21cb" - }, - "\\curvearrowleft": { - font: "ams", - group: "rel", - replace: "\u21b6" - }, - "\\circlearrowleft": { - font: "ams", - group: "rel", - replace: "\u21ba" - }, - "\\Lsh": { - font: "ams", - group: "rel", - replace: "\u21b0" - }, - "\\upuparrows": { - font: "ams", - group: "rel", - replace: "\u21c8" - }, - "\\upharpoonleft": { - font: "ams", - group: "rel", - replace: "\u21bf" - }, - "\\downharpoonleft": { - font: "ams", - group: "rel", - replace: "\u21c3" - }, - "\\multimap": { - font: "ams", - group: "rel", - replace: "\u22b8" - }, - "\\leftrightsquigarrow": { - font: "ams", - group: "rel", - replace: "\u21ad" - }, - "\\rightrightarrows": { - font: "ams", - group: "rel", - replace: "\u21c9" - }, - "\\rightleftarrows": { - font: "ams", - group: "rel", - replace: "\u21c4" - }, - "\\twoheadrightarrow": { - font: "ams", - group: "rel", - replace: "\u21a0" - }, - "\\rightarrowtail": { - font: "ams", - group: "rel", - replace: "\u21a3" - }, - "\\looparrowright": { - font: "ams", - group: "rel", - replace: "\u21ac" - }, - "\\curvearrowright": { - font: "ams", - group: "rel", - replace: "\u21b7" - }, - "\\circlearrowright": { - font: "ams", - group: "rel", - replace: "\u21bb" - }, - "\\Rsh": { - font: "ams", - group: "rel", - replace: "\u21b1" - }, - "\\downdownarrows": { - font: "ams", - group: "rel", - replace: "\u21ca" - }, - "\\upharpoonright": { - font: "ams", - group: "rel", - replace: "\u21be" - }, - "\\downharpoonright": { - font: "ams", - group: "rel", - replace: "\u21c2" - }, - "\\rightsquigarrow": { - font: "ams", - group: "rel", - replace: "\u21dd" - }, - "\\leadsto": { - font: "ams", - group: "rel", - replace: "\u21dd" - }, - "\\Rrightarrow": { - font: "ams", - group: "rel", - replace: "\u21db" - }, - "\\restriction": { - font: "ams", - group: "rel", - replace: "\u21be" - }, - - "`": { - font: "main", - group: "textord", - replace: "\u2018" - }, - "\\$": { - font: "main", - group: "textord", - replace: "$" - }, - "\\%": { - font: "main", - group: "textord", - replace: "%" - }, - "\\_": { - font: "main", - group: "textord", - replace: "_" - }, - "\\angle": { - font: "main", - group: "textord", - replace: "\u2220" - }, - "\\infty": { - font: "main", - group: "textord", - replace: "\u221e" - }, - "\\prime": { - font: "main", - group: "textord", - replace: "\u2032" - }, - "\\triangle": { - font: "main", - group: "textord", - replace: "\u25b3" - }, - "\\Gamma": { - font: "main", - group: "textord", - replace: "\u0393" - }, - "\\Delta": { - font: "main", - group: "textord", - replace: "\u0394" - }, - "\\Theta": { - font: "main", - group: "textord", - replace: "\u0398" - }, - "\\Lambda": { - font: "main", - group: "textord", - replace: "\u039b" - }, - "\\Xi": { - font: "main", - group: "textord", - replace: "\u039e" - }, - "\\Pi": { - font: "main", - group: "textord", - replace: "\u03a0" - }, - "\\Sigma": { - font: "main", - group: "textord", - replace: "\u03a3" - }, - "\\Upsilon": { - font: "main", - group: "textord", - replace: "\u03a5" - }, - "\\Phi": { - font: "main", - group: "textord", - replace: "\u03a6" - }, - "\\Psi": { - font: "main", - group: "textord", - replace: "\u03a8" - }, - "\\Omega": { - font: "main", - group: "textord", - replace: "\u03a9" - }, - "\\neg": { - font: "main", - group: "textord", - replace: "\u00ac" - }, - "\\lnot": { - font: "main", - group: "textord", - replace: "\u00ac" - }, - "\\top": { - font: "main", - group: "textord", - replace: "\u22a4" - }, - "\\bot": { - font: "main", - group: "textord", - replace: "\u22a5" - }, - "\\emptyset": { - font: "main", - group: "textord", - replace: "\u2205" - }, - "\\varnothing": { - font: "ams", - group: "textord", - replace: "\u2205" - }, - "\\alpha": { - font: "main", - group: "mathord", - replace: "\u03b1" - }, - "\\beta": { - font: "main", - group: "mathord", - replace: "\u03b2" - }, - "\\gamma": { - font: "main", - group: "mathord", - replace: "\u03b3" - }, - "\\delta": { - font: "main", - group: "mathord", - replace: "\u03b4" - }, - "\\epsilon": { - font: "main", - group: "mathord", - replace: "\u03f5" - }, - "\\zeta": { - font: "main", - group: "mathord", - replace: "\u03b6" - }, - "\\eta": { - font: "main", - group: "mathord", - replace: "\u03b7" - }, - "\\theta": { - font: "main", - group: "mathord", - replace: "\u03b8" - }, - "\\iota": { - font: "main", - group: "mathord", - replace: "\u03b9" - }, - "\\kappa": { - font: "main", - group: "mathord", - replace: "\u03ba" - }, - "\\lambda": { - font: "main", - group: "mathord", - replace: "\u03bb" - }, - "\\mu": { - font: "main", - group: "mathord", - replace: "\u03bc" - }, - "\\nu": { - font: "main", - group: "mathord", - replace: "\u03bd" - }, - "\\xi": { - font: "main", - group: "mathord", - replace: "\u03be" - }, - "\\omicron": { - font: "main", - group: "mathord", - replace: "o" - }, - "\\pi": { - font: "main", - group: "mathord", - replace: "\u03c0" - }, - "\\rho": { - font: "main", - group: "mathord", - replace: "\u03c1" - }, - "\\sigma": { - font: "main", - group: "mathord", - replace: "\u03c3" - }, - "\\tau": { - font: "main", - group: "mathord", - replace: "\u03c4" - }, - "\\upsilon": { - font: "main", - group: "mathord", - replace: "\u03c5" - }, - "\\phi": { - font: "main", - group: "mathord", - replace: "\u03d5" - }, - "\\chi": { - font: "main", - group: "mathord", - replace: "\u03c7" - }, - "\\psi": { - font: "main", - group: "mathord", - replace: "\u03c8" - }, - "\\omega": { - font: "main", - group: "mathord", - replace: "\u03c9" - }, - "\\varepsilon": { - font: "main", - group: "mathord", - replace: "\u03b5" - }, - "\\vartheta": { - font: "main", - group: "mathord", - replace: "\u03d1" - }, - "\\varpi": { - font: "main", - group: "mathord", - replace: "\u03d6" - }, - "\\varrho": { - font: "main", - group: "mathord", - replace: "\u03f1" - }, - "\\varsigma": { - font: "main", - group: "mathord", - replace: "\u03c2" - }, - "\\varphi": { - font: "main", - group: "mathord", - replace: "\u03c6" - }, - "*": { - font: "main", - group: "bin", - replace: "\u2217" - }, - "+": { - font: "main", - group: "bin" - }, - "-": { - font: "main", - group: "bin", - replace: "\u2212" - }, - "\\cdot": { - font: "main", - group: "bin", - replace: "\u22c5" - }, - "\\circ": { - font: "main", - group: "bin", - replace: "\u2218" - }, - "\\div": { - font: "main", - group: "bin", - replace: "\u00f7" - }, - "\\pm": { - font: "main", - group: "bin", - replace: "\u00b1" - }, - "\\times": { - font: "main", - group: "bin", - replace: "\u00d7" - }, - "\\cap": { - font: "main", - group: "bin", - replace: "\u2229" - }, - "\\cup": { - font: "main", - group: "bin", - replace: "\u222a" - }, - "\\setminus": { - font: "main", - group: "bin", - replace: "\u2216" - }, - "\\land": { - font: "main", - group: "bin", - replace: "\u2227" - }, - "\\lor": { - font: "main", - group: "bin", - replace: "\u2228" - }, - "\\wedge": { - font: "main", - group: "bin", - replace: "\u2227" - }, - "\\vee": { - font: "main", - group: "bin", - replace: "\u2228" - }, - "\\surd": { - font: "main", - group: "textord", - replace: "\u221a" - }, - "(": { - font: "main", - group: "open" - }, - "[": { - font: "main", - group: "open" - }, - "\\langle": { - font: "main", - group: "open", - replace: "\u27e8" - }, - "\\lvert": { - font: "main", - group: "open", - replace: "\u2223" - }, - ")": { - font: "main", - group: "close" - }, - "]": { - font: "main", - group: "close" - }, - "?": { - font: "main", - group: "close" - }, - "!": { - font: "main", - group: "close" - }, - "\\rangle": { - font: "main", - group: "close", - replace: "\u27e9" - }, - "\\rvert": { - font: "main", - group: "close", - replace: "\u2223" - }, - "=": { - font: "main", - group: "rel" - }, - "<": { - font: "main", - group: "rel" - }, - ">": { - font: "main", - group: "rel" - }, - ":": { - font: "main", - group: "rel" - }, - "\\approx": { - font: "main", - group: "rel", - replace: "\u2248" - }, - "\\cong": { - font: "main", - group: "rel", - replace: "\u2245" - }, - "\\ge": { - font: "main", - group: "rel", - replace: "\u2265" - }, - "\\geq": { - font: "main", - group: "rel", - replace: "\u2265" - }, - "\\gets": { - font: "main", - group: "rel", - replace: "\u2190" - }, - "\\in": { - font: "main", - group: "rel", - replace: "\u2208" - }, - "\\notin": { - font: "main", - group: "rel", - replace: "\u2209" - }, - "\\subset": { - font: "main", - group: "rel", - replace: "\u2282" - }, - "\\supset": { - font: "main", - group: "rel", - replace: "\u2283" - }, - "\\subseteq": { - font: "main", - group: "rel", - replace: "\u2286" - }, - "\\supseteq": { - font: "main", - group: "rel", - replace: "\u2287" - }, - "\\nsubseteq": { - font: "ams", - group: "rel", - replace: "\u2288" - }, - "\\nsupseteq": { - font: "ams", - group: "rel", - replace: "\u2289" - }, - "\\models": { - font: "main", - group: "rel", - replace: "\u22a8" - }, - "\\leftarrow": { - font: "main", - group: "rel", - replace: "\u2190" - }, - "\\le": { - font: "main", - group: "rel", - replace: "\u2264" - }, - "\\leq": { - font: "main", - group: "rel", - replace: "\u2264" - }, - "\\ne": { - font: "main", - group: "rel", - replace: "\u2260" - }, - "\\neq": { - font: "main", - group: "rel", - replace: "\u2260" - }, - "\\rightarrow": { - font: "main", - group: "rel", - replace: "\u2192" - }, - "\\to": { - font: "main", - group: "rel", - replace: "\u2192" - }, - "\\ngeq": { - font: "ams", - group: "rel", - replace: "\u2271" - }, - "\\nleq": { - font: "ams", - group: "rel", - replace: "\u2270" - }, - "\\!": { - font: "main", - group: "spacing" - }, - "\\ ": { - font: "main", - group: "spacing", - replace: "\u00a0" - }, - "~": { - font: "main", - group: "spacing", - replace: "\u00a0" - }, - "\\,": { - font: "main", - group: "spacing" - }, - "\\:": { - font: "main", - group: "spacing" - }, - "\\;": { - font: "main", - group: "spacing" - }, - "\\enspace": { - font: "main", - group: "spacing" - }, - "\\qquad": { - font: "main", - group: "spacing" - }, - "\\quad": { - font: "main", - group: "spacing" - }, - "\\space": { - font: "main", - group: "spacing", - replace: "\u00a0" - }, - ",": { - font: "main", - group: "punct" - }, - ";": { - font: "main", - group: "punct" - }, - "\\colon": { - font: "main", - group: "punct", - replace: ":" - }, - "\\barwedge": { - font: "ams", - group: "textord", - replace: "\u22bc" - }, - "\\veebar": { - font: "ams", - group: "textord", - replace: "\u22bb" - }, - "\\odot": { - font: "main", - group: "bin", - replace: "\u2299" - }, - "\\oplus": { - font: "main", - group: "bin", - replace: "\u2295" - }, - "\\otimes": { - font: "main", - group: "bin", - replace: "\u2297" - }, - "\\partial":{ - font: "main", - group: "textord", - replace: "\u2202" - }, - "\\oslash": { - font: "main", - group: "bin", - replace: "\u2298" - }, - "\\circledcirc": { - font: "ams", - group: "textord", - replace: "\u229a" - }, - "\\boxdot": { - font: "ams", - group: "textord", - replace: "\u22a1" - }, - "\\bigtriangleup": { - font: "main", - group: "bin", - replace: "\u25b3" - }, - "\\bigtriangledown": { - font: "main", - group: "bin", - replace: "\u25bd" - }, - "\\dagger": { - font: "main", - group: "bin", - replace: "\u2020" - }, - "\\diamond": { - font: "main", - group: "bin", - replace: "\u22c4" - }, - "\\star": { - font: "main", - group: "bin", - replace: "\u22c6" - }, - "\\triangleleft": { - font: "main", - group: "bin", - replace: "\u25c3" - }, - "\\triangleright": { - font: "main", - group: "bin", - replace: "\u25b9" - }, - "\\{": { - font: "main", - group: "open", - replace: "{" - }, - "\\}": { - font: "main", - group: "close", - replace: "}" - }, - "\\lbrace": { - font: "main", - group: "open", - replace: "{" - }, - "\\rbrace": { - font: "main", - group: "close", - replace: "}" - }, - "\\lbrack": { - font: "main", - group: "open", - replace: "[" - }, - "\\rbrack": { - font: "main", - group: "close", - replace: "]" - }, - "\\lfloor": { - font: "main", - group: "open", - replace: "\u230a" - }, - "\\rfloor": { - font: "main", - group: "close", - replace: "\u230b" - }, - "\\lceil": { - font: "main", - group: "open", - replace: "\u2308" - }, - "\\rceil": { - font: "main", - group: "close", - replace: "\u2309" - }, - "\\backslash": { - font: "main", - group: "textord", - replace: "\\" - }, - "|": { - font: "main", - group: "textord", - replace: "\u2223" - }, - "\\vert": { - font: "main", - group: "textord", - replace: "\u2223" - }, - "\\|": { - font: "main", - group: "textord", - replace: "\u2225" - }, - "\\Vert": { - font: "main", - group: "textord", - replace: "\u2225" - }, - "\\uparrow": { - font: "main", - group: "textord", - replace: "\u2191" - }, - "\\Uparrow": { - font: "main", - group: "textord", - replace: "\u21d1" - }, - "\\downarrow": { - font: "main", - group: "textord", - replace: "\u2193" - }, - "\\Downarrow": { - font: "main", - group: "textord", - replace: "\u21d3" - }, - "\\updownarrow": { - font: "main", - group: "textord", - replace: "\u2195" - }, - "\\Updownarrow": { - font: "main", - group: "textord", - replace: "\u21d5" - }, - "\\coprod": { - font: "math", - group: "op", - replace: "\u2210" - }, - "\\bigvee": { - font: "math", - group: "op", - replace: "\u22c1" - }, - "\\bigwedge": { - font: "math", - group: "op", - replace: "\u22c0" - }, - "\\biguplus": { - font: "math", - group: "op", - replace: "\u2a04" - }, - "\\bigcap": { - font: "math", - group: "op", - replace: "\u22c2" - }, - "\\bigcup": { - font: "math", - group: "op", - replace: "\u22c3" - }, - "\\int": { - font: "math", - group: "op", - replace: "\u222b" - }, - "\\intop": { - font: "math", - group: "op", - replace: "\u222b" - }, - "\\iint": { - font: "math", - group: "op", - replace: "\u222c" - }, - "\\iiint": { - font: "math", - group: "op", - replace: "\u222d" - }, - "\\prod": { - font: "math", - group: "op", - replace: "\u220f" - }, - "\\sum": { - font: "math", - group: "op", - replace: "\u2211" - }, - "\\bigotimes": { - font: "math", - group: "op", - replace: "\u2a02" - }, - "\\bigoplus": { - font: "math", - group: "op", - replace: "\u2a01" - }, - "\\bigodot": { - font: "math", - group: "op", - replace: "\u2a00" - }, - "\\oint": { - font: "math", - group: "op", - replace: "\u222e" - }, - "\\bigsqcup": { - font: "math", - group: "op", - replace: "\u2a06" - }, - "\\smallint": { - font: "math", - group: "op", - replace: "\u222b" - }, - "\\ldots": { - font: "main", - group: "punct", - replace: "\u2026" - }, - "\\cdots": { - font: "main", - group: "inner", - replace: "\u22ef" - }, - "\\ddots": { - font: "main", - group: "inner", - replace: "\u22f1" - }, - "\\vdots": { - font: "main", - group: "textord", - replace: "\u22ee" - }, - "\\acute": { - font: "main", - group: "accent", - replace: "\u00b4" - }, - "\\grave": { - font: "main", - group: "accent", - replace: "\u0060" - }, - "\\ddot": { - font: "main", - group: "accent", - replace: "\u00a8" - }, - "\\tilde": { - font: "main", - group: "accent", - replace: "\u007e" - }, - "\\bar": { - font: "main", - group: "accent", - replace: "\u00af" - }, - "\\breve": { - font: "main", - group: "accent", - replace: "\u02d8" - }, - "\\check": { - font: "main", - group: "accent", - replace: "\u02c7" - }, - "\\hat": { - font: "main", - group: "accent", - replace: "\u005e" - }, - "\\vec": { - font: "main", - group: "accent", - replace: "\u20d7" - }, - "\\dot": { - font: "main", - group: "accent", - replace: "\u02d9" - }, - - "\\imath": { - font: "main", - group: "mathord", - replace: "\u0131" - }, - "\\jmath": { - font: "main", - group: "mathord", - replace: "\u0237" - } - }, - "text": { - "\\ ": { - font: "main", - group: "spacing", - replace: "\u00a0" - }, - " ": { - font: "main", - group: "spacing", - replace: "\u00a0" - }, - "~": { - font: "main", - group: "spacing", - replace: "\u00a0" - } - } -}; - -// There are lots of symbols which are the same, so we add them in afterwards. - -// All of these are textords in math mode -var mathTextSymbols = "0123456789/@.\""; -for (var i = 0; i < mathTextSymbols.length; i++) { - var ch = mathTextSymbols.charAt(i); - symbols.math[ch] = { - font: "main", - group: "textord" - }; -} - -// All of these are textords in text mode -var textSymbols = "0123456789`!@*()-=+[]'\";:?/.,"; -for (var i = 0; i < textSymbols.length; i++) { - var ch = textSymbols.charAt(i); - symbols.text[ch] = { - font: "main", - group: "textord" - }; -} - -// All of these are textords in text mode, and mathords in math mode -var letters = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"; -for (var i = 0; i < letters.length; i++) { - var ch = letters.charAt(i); - symbols.math[ch] = { - font: "main", - group: "mathord" - }; - symbols.text[ch] = { - font: "main", - group: "textord" - }; -} - -module.exports = symbols; - -},{}],22:[function(require,module,exports){ -/** - * 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, 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 -}; - -},{}]},{},[1]) -(1) -}); -;
\ No newline at end of file |