1157 lines
33 KiB
JavaScript
1157 lines
33 KiB
JavaScript
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/**
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* Sunlight
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* Intelligent syntax highlighting
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*
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* http://sunlightjs.com/
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*
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* by Tommy Montgomery <http://tmont.com>
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* Licensed under WTFPL <http://sam.zoy.org/wtfpl/>
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*/
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(function(window, document, undefined){
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var
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//http://webreflection.blogspot.com/2009/01/32-bytes-to-know-if-your-browser-is-ie.html
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//we have to sniff this because IE requires \r
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isIe = !+"\v1",
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EOL = isIe ? "\r" : "\n",
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EMPTY = function() { return null; },
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HIGHLIGHTED_NODE_COUNT = 0,
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DEFAULT_LANGUAGE = "plaintext",
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DEFAULT_CLASS_PREFIX = "sunlight-",
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//global sunlight variables
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defaultAnalyzer,
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getComputedStyle,
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globalOptions = {
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tabWidth: 4,
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classPrefix: DEFAULT_CLASS_PREFIX,
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showWhitespace: false,
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maxHeight: false
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},
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languages = {},
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languageDefaults = {},
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events = {
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beforeHighlightNode: [],
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beforeHighlight: [],
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beforeTokenize: [],
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afterTokenize: [],
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beforeAnalyze: [],
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afterAnalyze: [],
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afterHighlight: [],
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afterHighlightNode: []
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};
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defaultAnalyzer = (function() {
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function defaultHandleToken(suffix) {
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return function(context) {
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var element = document.createElement("span");
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element.className = context.options.classPrefix + suffix;
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element.appendChild(context.createTextNode(context.tokens[context.index]));
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return context.addNode(element) || true;
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};
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}
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return {
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handleToken: function(context) {
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return defaultHandleToken(context.tokens[context.index].name)(context);
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},
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//just append default content as a text node
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handle_default: function(context) {
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return context.addNode(context.createTextNode(context.tokens[context.index]));
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},
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//this handles the named ident mayhem
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handle_ident: function(context) {
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var evaluate = function(rules, createRule) {
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var i;
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rules = rules || [];
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for (i = 0; i < rules.length; i++) {
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if (typeof(rules[i]) === "function") {
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if (rules[i](context)) {
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return defaultHandleToken("named-ident")(context);
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}
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} else if (createRule && createRule(rules[i])(context.tokens)) {
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return defaultHandleToken("named-ident")(context);
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}
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}
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return false;
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};
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return evaluate(context.language.namedIdentRules.custom)
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|| evaluate(context.language.namedIdentRules.follows, function(ruleData) { return createProceduralRule(context.index - 1, -1, ruleData, context.language.caseInsensitive); })
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|| evaluate(context.language.namedIdentRules.precedes, function(ruleData) { return createProceduralRule(context.index + 1, 1, ruleData, context.language.caseInsensitive); })
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|| evaluate(context.language.namedIdentRules.between, function(ruleData) { return createBetweenRule(context.index, ruleData.opener, ruleData.closer, context.language.caseInsensitive); })
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|| defaultHandleToken("ident")(context);
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}
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};
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}());
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languageDefaults = {
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analyzer: create(defaultAnalyzer),
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customTokens: [],
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namedIdentRules: {},
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punctuation: /[^\w\s]/,
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numberParser: defaultNumberParser,
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caseInsensitive: false,
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doNotParse: /\s/,
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contextItems: {},
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embeddedLanguages: {}
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};
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//adapted from http://blargh.tommymontgomery.com/2010/04/get-computed-style-in-javascript/
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getComputedStyle = (function() {
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var func = null;
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if (document.defaultView && document.defaultView.getComputedStyle) {
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func = document.defaultView.getComputedStyle;
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} else {
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func = function(element, anything) {
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return element["currentStyle"] || {};
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};
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}
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return function(element, style) {
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return func(element, null)[style];
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}
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}());
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//-----------
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//FUNCTIONS
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//-----------
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function createCodeReader(text) {
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var index = 0,
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line = 1,
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column = 1,
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length,
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EOF = undefined,
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currentChar,
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nextReadBeginsLine;
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text = text.replace(/\r\n/g, "\n").replace(/\r/g, "\n"); //normalize line endings to unix
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length = text.length;
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currentChar = length > 0 ? text.charAt(0) : EOF;
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function getCharacters(count) {
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var value;
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if (count === 0) {
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return "";
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}
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count = count || 1;
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value = text.substring(index + 1, index + count + 1);
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return value === "" ? EOF : value;
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}
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return {
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toString: function() {
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return "length: " + length + ", index: " + index + ", line: " + line + ", column: " + column + ", current: [" + currentChar + "]";
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},
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peek: function(count) {
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return getCharacters(count);
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},
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substring: function() {
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return text.substring(index);
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},
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peekSubstring: function() {
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return text.substring(index + 1);
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},
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read: function(count) {
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var value = getCharacters(count),
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newlineCount,
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lastChar;
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if (value === "") {
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//this is a result of reading/peeking/doing nothing
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return value;
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}
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if (value !== EOF) {
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//advance index
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index += value.length;
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column += value.length;
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//update line count
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if (nextReadBeginsLine) {
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line++;
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column = 1;
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nextReadBeginsLine = false;
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}
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newlineCount = value.substring(0, value.length - 1).replace(/[^\n]/g, "").length;
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if (newlineCount > 0) {
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line += newlineCount;
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column = 1;
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}
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lastChar = last(value);
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if (lastChar === "\n") {
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nextReadBeginsLine = true;
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}
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currentChar = lastChar;
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} else {
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index = length;
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currentChar = EOF;
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}
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return value;
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},
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text: function() { return text; },
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getLine: function() { return line; },
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getColumn: function() { return column; },
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isEof: function() { return index >= length; },
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isSol: function() { return column === 1; },
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isSolWs: function() {
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var temp = index,
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c;
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if (column === 1) {
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return true;
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}
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//look backward until we find a newline or a non-whitespace character
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while ((c = text.charAt(--temp)) !== "") {
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if (c === "\n") {
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return true;
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}
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if (!/\s/.test(c)) {
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return false;
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}
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}
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return true;
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},
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isEol: function() { return nextReadBeginsLine; },
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EOF: EOF,
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current: function() { return currentChar; }
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};
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}
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//http://javascript.crockford.com/prototypal.html
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function create(o) {
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function F() {}
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F.prototype = o;
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return new F();
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}
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function appendAll(parent, children) {
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var i;
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for (i = 0; i < children.length; i++) {
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parent.appendChild(children[i]);
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}
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}
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//gets the last character in a string or the last element in an array
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function last(thing) {
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return thing.charAt ? thing.charAt(thing.length - 1) : thing[thing.length - 1];
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}
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//array.contains()
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function contains(arr, value, caseInsensitive) {
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var i;
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if (arr.indexOf && !caseInsensitive) {
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return arr.indexOf(value) >= 0;
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}
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for (i = 0; i < arr.length; i++) {
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if (arr[i] === value) {
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return true;
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}
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if (caseInsensitive && typeof(arr[i]) === "string" && typeof(value) === "string" && arr[i].toUpperCase() === value.toUpperCase()) {
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return true;
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}
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}
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return false;
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}
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//non-recursively merges one object into the other
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function merge(defaultObject, objectToMerge) {
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var key;
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if (!objectToMerge) {
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return defaultObject;
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}
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for (key in objectToMerge) {
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defaultObject[key] = objectToMerge[key];
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}
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return defaultObject;
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}
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function clone(object) {
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return merge({}, object);
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}
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//http://stackoverflow.com/questions/3561493/is-there-a-regexp-escape-function-in-javascript/3561711#3561711
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function regexEscape(s) {
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return s.replace(/[-\/\\^$*+?.()|[\]{}]/g, "\\$&");
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}
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function createProceduralRule(startIndex, direction, tokenRequirements, caseInsensitive) {
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tokenRequirements = tokenRequirements.slice(0);
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return function(tokens) {
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var tokenIndexStart = startIndex,
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j,
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expected,
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actual;
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if (direction === 1) {
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tokenRequirements.reverse();
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}
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for (j = 0; j < tokenRequirements.length; j++) {
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actual = tokens[tokenIndexStart + (j * direction)];
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expected = tokenRequirements[tokenRequirements.length - 1 - j];
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if (actual === undefined) {
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if (expected["optional"] !== undefined && expected.optional) {
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tokenIndexStart -= direction;
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} else {
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return false;
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}
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} else if (actual.name === expected.token && (expected["values"] === undefined || contains(expected.values, actual.value, caseInsensitive))) {
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//derp
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continue;
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} else if (expected["optional"] !== undefined && expected.optional) {
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tokenIndexStart -= direction; //we need to reevaluate against this token again
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} else {
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return false;
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}
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}
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return true;
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};
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}
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function createBetweenRule(startIndex, opener, closer, caseInsensitive) {
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return function(tokens) {
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var index = startIndex,
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token,
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success = false;
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//check to the left: if we run into a closer or never run into an opener, fail
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while ((token = tokens[--index]) !== undefined) {
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if (token.name === closer.token && contains(closer.values, token.value)) {
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if (token.name === opener.token && contains(opener.values, token.value, caseInsensitive)) {
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//if the closer is the same as the opener that's okay
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success = true;
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break;
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}
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return false;
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}
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if (token.name === opener.token && contains(opener.values, token.value, caseInsensitive)) {
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success = true;
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break;
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}
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}
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if (!success) {
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return false;
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}
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//check to the right for the closer
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index = startIndex;
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while ((token = tokens[++index]) !== undefined) {
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if (token.name === opener.token && contains(opener.values, token.value, caseInsensitive)) {
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if (token.name === closer.token && contains(closer.values, token.value, caseInsensitive)) {
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//if the closer is the same as the opener that's okay
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success = true;
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break;
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}
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return false;
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}
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if (token.name === closer.token && contains(closer.values, token.value, caseInsensitive)) {
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success = true;
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break;
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}
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}
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return success;
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};
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}
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function matchWord(context, wordMap, tokenName, doNotRead) {
|
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var current = context.reader.current(),
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|
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i,
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word,
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peek,
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line = context.reader.getLine(),
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column = context.reader.getColumn();
|
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wordMap = wordMap || [];
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if (context.language.caseInsensitive) {
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current = current.toUpperCase();
|
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}
|
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if (!wordMap[current]) {
|
||
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return null;
|
||
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}
|
||
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wordMap = wordMap[current];
|
||
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for (i = 0; i < wordMap.length; i++) {
|
||
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word = wordMap[i].value;
|
||
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|
|
||
|
|
peek = current + context.reader.peek(word.length);
|
||
|
|
if (word === peek || wordMap[i].regex.test(peek)) {
|
||
|
|
return context.createToken(
|
||
|
|
tokenName,
|
||
|
|
context.reader.current() + context.reader[doNotRead ? "peek" : "read"](word.length - 1),
|
||
|
|
line,
|
||
|
|
column
|
||
|
|
);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return null;
|
||
|
|
}
|
||
|
|
|
||
|
|
//gets the next token in the specified direction while matcher matches the current token
|
||
|
|
function getNextWhile(tokens, index, direction, matcher) {
|
||
|
|
var count = 1,
|
||
|
|
token;
|
||
|
|
|
||
|
|
direction = direction || 1;
|
||
|
|
while (token = tokens[index + (direction * count++)]) {
|
||
|
|
if (!matcher(token)) {
|
||
|
|
return token;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return undefined;
|
||
|
|
}
|
||
|
|
|
||
|
|
//this is crucial for performance
|
||
|
|
function createHashMap(wordMap, boundary, caseInsensitive) {
|
||
|
|
//creates a hash table where the hash is the first character of the word
|
||
|
|
var newMap = { },
|
||
|
|
i,
|
||
|
|
word,
|
||
|
|
firstChar;
|
||
|
|
|
||
|
|
for (i = 0; i < wordMap.length; i++) {
|
||
|
|
word = caseInsensitive ? wordMap[i].toUpperCase() : wordMap[i];
|
||
|
|
firstChar = word.charAt(0);
|
||
|
|
if (!newMap[firstChar]) {
|
||
|
|
newMap[firstChar] = [];
|
||
|
|
}
|
||
|
|
|
||
|
|
newMap[firstChar].push({ value: word, regex: new RegExp("^" + regexEscape(word) + boundary, caseInsensitive ? "i" : "") });
|
||
|
|
}
|
||
|
|
|
||
|
|
return newMap;
|
||
|
|
}
|
||
|
|
|
||
|
|
function defaultNumberParser(context) {
|
||
|
|
var current = context.reader.current(),
|
||
|
|
number,
|
||
|
|
line = context.reader.getLine(),
|
||
|
|
column = context.reader.getColumn(),
|
||
|
|
allowDecimal = true,
|
||
|
|
peek;
|
||
|
|
|
||
|
|
if (!/\d/.test(current)) {
|
||
|
|
//is it a decimal followed by a number?
|
||
|
|
if (current !== "." || !/\d/.test(context.reader.peek())) {
|
||
|
|
return null;
|
||
|
|
}
|
||
|
|
|
||
|
|
//decimal without leading zero
|
||
|
|
number = current + context.reader.read();
|
||
|
|
allowDecimal = false;
|
||
|
|
} else {
|
||
|
|
number = current;
|
||
|
|
if (current === "0" && context.reader.peek() !== ".") {
|
||
|
|
//hex or octal
|
||
|
|
allowDecimal = false;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
//easy way out: read until it's not a number or letter
|
||
|
|
//this will work for hex (0xef), octal (012), decimal and scientific notation (1e3)
|
||
|
|
//anything else and you're on your own
|
||
|
|
|
||
|
|
while ((peek = context.reader.peek()) !== context.reader.EOF) {
|
||
|
|
if (!/[A-Za-z0-9]/.test(peek)) {
|
||
|
|
if (peek === "." && allowDecimal && /\d$/.test(context.reader.peek(2))) {
|
||
|
|
number += context.reader.read();
|
||
|
|
allowDecimal = false;
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
number += context.reader.read();
|
||
|
|
}
|
||
|
|
|
||
|
|
return context.createToken("number", number, line, column);
|
||
|
|
}
|
||
|
|
|
||
|
|
function fireEvent(eventName, highlighter, eventContext) {
|
||
|
|
var delegates = events[eventName] || [],
|
||
|
|
i;
|
||
|
|
|
||
|
|
for (i = 0; i < delegates.length; i++) {
|
||
|
|
delegates[i].call(highlighter, eventContext);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
function Highlighter(options) {
|
||
|
|
this.options = merge(clone(globalOptions), options);
|
||
|
|
}
|
||
|
|
|
||
|
|
Highlighter.prototype = (function() {
|
||
|
|
var parseNextToken = (function() {
|
||
|
|
function isIdentMatch(context) {
|
||
|
|
return context.language.identFirstLetter && context.language.identFirstLetter.test(context.reader.current());
|
||
|
|
}
|
||
|
|
|
||
|
|
//token parsing functions
|
||
|
|
function parseKeyword(context) {
|
||
|
|
return matchWord(context, context.language.keywords, "keyword");
|
||
|
|
}
|
||
|
|
|
||
|
|
function parseCustomTokens(context) {
|
||
|
|
var tokenName,
|
||
|
|
token;
|
||
|
|
if (context.language.customTokens === undefined) {
|
||
|
|
return null;
|
||
|
|
}
|
||
|
|
|
||
|
|
for (tokenName in context.language.customTokens) {
|
||
|
|
token = matchWord(context, context.language.customTokens[tokenName], tokenName);
|
||
|
|
if (token !== null) {
|
||
|
|
return token;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return null;
|
||
|
|
}
|
||
|
|
|
||
|
|
function parseOperator(context) {
|
||
|
|
return matchWord(context, context.language.operators, "operator");
|
||
|
|
}
|
||
|
|
|
||
|
|
function parsePunctuation(context) {
|
||
|
|
var current = context.reader.current();
|
||
|
|
if (context.language.punctuation.test(regexEscape(current))) {
|
||
|
|
return context.createToken("punctuation", current, context.reader.getLine(), context.reader.getColumn());
|
||
|
|
}
|
||
|
|
|
||
|
|
return null;
|
||
|
|
}
|
||
|
|
|
||
|
|
function parseIdent(context) {
|
||
|
|
var ident,
|
||
|
|
peek,
|
||
|
|
line = context.reader.getLine(),
|
||
|
|
column = context.reader.getColumn();
|
||
|
|
|
||
|
|
if (!isIdentMatch(context)) {
|
||
|
|
return null;
|
||
|
|
}
|
||
|
|
|
||
|
|
ident = context.reader.current();
|
||
|
|
while ((peek = context.reader.peek()) !== context.reader.EOF) {
|
||
|
|
if (!context.language.identAfterFirstLetter.test(peek)) {
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
ident += context.reader.read();
|
||
|
|
}
|
||
|
|
|
||
|
|
return context.createToken("ident", ident, line, column);
|
||
|
|
}
|
||
|
|
|
||
|
|
function parseDefault(context) {
|
||
|
|
if (context.defaultData.text === "") {
|
||
|
|
//new default token
|
||
|
|
context.defaultData.line = context.reader.getLine();
|
||
|
|
context.defaultData.column = context.reader.getColumn();
|
||
|
|
}
|
||
|
|
|
||
|
|
context.defaultData.text += context.reader.current();
|
||
|
|
return null;
|
||
|
|
}
|
||
|
|
|
||
|
|
function parseScopes(context) {
|
||
|
|
var current = context.reader.current(),
|
||
|
|
tokenName,
|
||
|
|
specificScopes,
|
||
|
|
j,
|
||
|
|
opener,
|
||
|
|
line,
|
||
|
|
column,
|
||
|
|
continuation,
|
||
|
|
value;
|
||
|
|
|
||
|
|
for (tokenName in context.language.scopes) {
|
||
|
|
specificScopes = context.language.scopes[tokenName];
|
||
|
|
for (j = 0; j < specificScopes.length; j++) {
|
||
|
|
opener = specificScopes[j][0];
|
||
|
|
|
||
|
|
value = current + context.reader.peek(opener.length - 1);
|
||
|
|
|
||
|
|
if (opener !== value && (!context.language.caseInsensitive || value.toUpperCase() !== opener.toUpperCase())) {
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
|
||
|
|
line = context.reader.getLine(), column = context.reader.getColumn();
|
||
|
|
context.reader.read(opener.length - 1);
|
||
|
|
continuation = getScopeReaderFunction(specificScopes[j], tokenName);
|
||
|
|
return continuation(context, continuation, value, line, column);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return null;
|
||
|
|
}
|
||
|
|
|
||
|
|
function parseNumber(context) {
|
||
|
|
return context.language.numberParser(context);
|
||
|
|
}
|
||
|
|
|
||
|
|
function parseCustomRules(context) {
|
||
|
|
var customRules = context.language.customParseRules,
|
||
|
|
i,
|
||
|
|
token;
|
||
|
|
|
||
|
|
if (customRules === undefined) {
|
||
|
|
return null;
|
||
|
|
}
|
||
|
|
|
||
|
|
for (i = 0; i < customRules.length; i++) {
|
||
|
|
token = customRules[i](context);
|
||
|
|
if (token) {
|
||
|
|
return token;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return null;
|
||
|
|
}
|
||
|
|
|
||
|
|
return function(context) {
|
||
|
|
if (context.language.doNotParse.test(context.reader.current())) {
|
||
|
|
return parseDefault(context);
|
||
|
|
}
|
||
|
|
|
||
|
|
return parseCustomRules(context)
|
||
|
|
|| parseCustomTokens(context)
|
||
|
|
|| parseKeyword(context)
|
||
|
|
|| parseScopes(context)
|
||
|
|
|| parseIdent(context)
|
||
|
|
|| parseNumber(context)
|
||
|
|
|| parseOperator(context)
|
||
|
|
|| parsePunctuation(context)
|
||
|
|
|| parseDefault(context);
|
||
|
|
}
|
||
|
|
}());
|
||
|
|
|
||
|
|
function getScopeReaderFunction(scope, tokenName) {
|
||
|
|
var escapeSequences = scope[2] || [],
|
||
|
|
closerLength = scope[1].length,
|
||
|
|
closer = typeof(scope[1]) === "string" ? new RegExp(regexEscape(scope[1])) : scope[1].regex,
|
||
|
|
zeroWidth = scope[3] || false;
|
||
|
|
|
||
|
|
//processCurrent indicates that this is being called from a continuation
|
||
|
|
//which means that we need to process the current char, rather than peeking at the next
|
||
|
|
return function(context, continuation, buffer, line, column, processCurrent) {
|
||
|
|
var foundCloser = false;
|
||
|
|
buffer = buffer || "";
|
||
|
|
|
||
|
|
processCurrent = processCurrent ? 1 : 0;
|
||
|
|
|
||
|
|
function process(processCurrent) {
|
||
|
|
//check for escape sequences
|
||
|
|
var peekValue,
|
||
|
|
current = context.reader.current(),
|
||
|
|
i;
|
||
|
|
|
||
|
|
for (i = 0; i < escapeSequences.length; i++) {
|
||
|
|
peekValue = (processCurrent ? current : "") + context.reader.peek(escapeSequences[i].length - processCurrent);
|
||
|
|
if (peekValue === escapeSequences[i]) {
|
||
|
|
buffer += context.reader.read(peekValue.length - processCurrent);
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
peekValue = (processCurrent ? current : "") + context.reader.peek(closerLength - processCurrent);
|
||
|
|
if (closer.test(peekValue)) {
|
||
|
|
foundCloser = true;
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
buffer += processCurrent ? current : context.reader.read();
|
||
|
|
return true;
|
||
|
|
};
|
||
|
|
|
||
|
|
if (!processCurrent || process(true)) {
|
||
|
|
while (context.reader.peek() !== context.reader.EOF && process(false)) { }
|
||
|
|
}
|
||
|
|
|
||
|
|
if (processCurrent) {
|
||
|
|
buffer += context.reader.current();
|
||
|
|
context.reader.read();
|
||
|
|
} else {
|
||
|
|
buffer += zeroWidth || context.reader.peek() === context.reader.EOF ? "" : context.reader.read(closerLength);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (!foundCloser) {
|
||
|
|
//we need to signal to the context that this scope was never properly closed
|
||
|
|
//this has significance for partial parses (e.g. for nested languages)
|
||
|
|
context.continuation = continuation;
|
||
|
|
}
|
||
|
|
|
||
|
|
return context.createToken(tokenName, buffer, line, column);
|
||
|
|
};
|
||
|
|
}
|
||
|
|
|
||
|
|
//called before processing the current
|
||
|
|
function switchToEmbeddedLanguageIfNecessary(context) {
|
||
|
|
var i,
|
||
|
|
embeddedLanguage;
|
||
|
|
|
||
|
|
for (i = 0; i < context.language.embeddedLanguages.length; i++) {
|
||
|
|
if (!languages[context.language.embeddedLanguages[i].language]) {
|
||
|
|
//unregistered language
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
|
||
|
|
embeddedLanguage = clone(context.language.embeddedLanguages[i]);
|
||
|
|
|
||
|
|
if (embeddedLanguage.switchTo(context)) {
|
||
|
|
embeddedLanguage.oldItems = clone(context.items);
|
||
|
|
context.embeddedLanguageStack.push(embeddedLanguage);
|
||
|
|
context.language = languages[embeddedLanguage.language];
|
||
|
|
context.items = merge(context.items, clone(context.language.contextItems));
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
//called after processing the current
|
||
|
|
function switchBackFromEmbeddedLanguageIfNecessary(context) {
|
||
|
|
var current = last(context.embeddedLanguageStack),
|
||
|
|
lang;
|
||
|
|
|
||
|
|
if (current && current.switchBack(context)) {
|
||
|
|
context.language = languages[current.parentLanguage];
|
||
|
|
lang = context.embeddedLanguageStack.pop();
|
||
|
|
|
||
|
|
//restore old items
|
||
|
|
context.items = clone(lang.oldItems);
|
||
|
|
lang.oldItems = {};
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
function tokenize(unhighlightedCode, language, partialContext, options) {
|
||
|
|
var tokens = [],
|
||
|
|
context,
|
||
|
|
continuation,
|
||
|
|
token;
|
||
|
|
|
||
|
|
fireEvent("beforeTokenize", this, { code: unhighlightedCode, language: language });
|
||
|
|
context = {
|
||
|
|
reader: createCodeReader(unhighlightedCode),
|
||
|
|
language: language,
|
||
|
|
items: clone(language.contextItems),
|
||
|
|
token: function(index) { return tokens[index]; },
|
||
|
|
getAllTokens: function() { return tokens.slice(0); },
|
||
|
|
count: function() { return tokens.length; },
|
||
|
|
options: options,
|
||
|
|
embeddedLanguageStack: [],
|
||
|
|
|
||
|
|
defaultData: {
|
||
|
|
text: "",
|
||
|
|
line: 1,
|
||
|
|
column: 1
|
||
|
|
},
|
||
|
|
createToken: function(name, value, line, column) {
|
||
|
|
return {
|
||
|
|
name: name,
|
||
|
|
line: line,
|
||
|
|
value: isIe ? value.replace(/\n/g, "\r") : value,
|
||
|
|
column: column,
|
||
|
|
language: this.language.name
|
||
|
|
};
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
//if continuation is given, then we need to pick up where we left off from a previous parse
|
||
|
|
//basically it indicates that a scope was never closed, so we need to continue that scope
|
||
|
|
if (partialContext.continuation) {
|
||
|
|
continuation = partialContext.continuation;
|
||
|
|
partialContext.continuation = null;
|
||
|
|
tokens.push(continuation(context, continuation, "", context.reader.getLine(), context.reader.getColumn(), true));
|
||
|
|
}
|
||
|
|
|
||
|
|
while (!context.reader.isEof()) {
|
||
|
|
switchToEmbeddedLanguageIfNecessary(context);
|
||
|
|
token = parseNextToken(context);
|
||
|
|
|
||
|
|
//flush default data if needed (in pretty much all languages this is just whitespace)
|
||
|
|
if (token !== null) {
|
||
|
|
if (context.defaultData.text !== "") {
|
||
|
|
tokens.push(context.createToken("default", context.defaultData.text, context.defaultData.line, context.defaultData.column));
|
||
|
|
context.defaultData.text = "";
|
||
|
|
}
|
||
|
|
|
||
|
|
if (token[0] !== undefined) {
|
||
|
|
//multiple tokens
|
||
|
|
tokens = tokens.concat(token);
|
||
|
|
} else {
|
||
|
|
//single token
|
||
|
|
tokens.push(token);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
switchBackFromEmbeddedLanguageIfNecessary(context);
|
||
|
|
context.reader.read();
|
||
|
|
}
|
||
|
|
|
||
|
|
//append the last default token, if necessary
|
||
|
|
if (context.defaultData.text !== "") {
|
||
|
|
tokens.push(context.createToken("default", context.defaultData.text, context.defaultData.line, context.defaultData.column));
|
||
|
|
}
|
||
|
|
|
||
|
|
fireEvent("afterTokenize", this, { code: unhighlightedCode, parserContext: context });
|
||
|
|
return context;
|
||
|
|
}
|
||
|
|
|
||
|
|
function createAnalyzerContext(parserContext, partialContext, options) {
|
||
|
|
var nodes = [],
|
||
|
|
prepareText = function() {
|
||
|
|
var nbsp, tab;
|
||
|
|
if (options.showWhitespace) {
|
||
|
|
nbsp = String.fromCharCode(0xB7);
|
||
|
|
tab = new Array(options.tabWidth).join(String.fromCharCode(0x2014)) + String.fromCharCode(0x2192);
|
||
|
|
} else {
|
||
|
|
nbsp = String.fromCharCode(0xA0);
|
||
|
|
tab = new Array(options.tabWidth + 1).join(nbsp);
|
||
|
|
}
|
||
|
|
|
||
|
|
return function(token) {
|
||
|
|
var value = token.value.split(" ").join(nbsp),
|
||
|
|
tabIndex,
|
||
|
|
lastNewlineColumn,
|
||
|
|
actualColumn,
|
||
|
|
tabLength;
|
||
|
|
|
||
|
|
//tabstop madness: replace \t with the appropriate number of characters, depending on the tabWidth option and its relative position in the line
|
||
|
|
while ((tabIndex = value.indexOf("\t")) >= 0) {
|
||
|
|
lastNewlineColumn = value.lastIndexOf(EOL, tabIndex);
|
||
|
|
actualColumn = lastNewlineColumn === -1 ? tabIndex : tabIndex - lastNewlineColumn - 1;
|
||
|
|
tabLength = options.tabWidth - (actualColumn % options.tabWidth); //actual length of the TAB character
|
||
|
|
|
||
|
|
value = value.substring(0, tabIndex) + tab.substring(options.tabWidth - tabLength) + value.substring(tabIndex + 1);
|
||
|
|
}
|
||
|
|
|
||
|
|
return value;
|
||
|
|
};
|
||
|
|
}();
|
||
|
|
|
||
|
|
return {
|
||
|
|
tokens: (partialContext.tokens || []).concat(parserContext.getAllTokens()),
|
||
|
|
index: partialContext.index ? partialContext.index + 1 : 0,
|
||
|
|
language: null,
|
||
|
|
getAnalyzer: EMPTY,
|
||
|
|
options: options,
|
||
|
|
continuation: parserContext.continuation,
|
||
|
|
addNode: function(node) { nodes.push(node); },
|
||
|
|
createTextNode: function(token) { return document.createTextNode(prepareText(token)); },
|
||
|
|
getNodes: function() { return nodes; },
|
||
|
|
resetNodes: function() { nodes = []; },
|
||
|
|
items: parserContext.items
|
||
|
|
};
|
||
|
|
}
|
||
|
|
|
||
|
|
//partialContext allows us to perform a partial parse, and then pick up where we left off at a later time
|
||
|
|
//this functionality enables nested highlights (language within a language, e.g. PHP within HTML followed by more PHP)
|
||
|
|
function highlightText(unhighlightedCode, languageId, partialContext) {
|
||
|
|
var language = languages[languageId],
|
||
|
|
analyzerContext;
|
||
|
|
|
||
|
|
partialContext = partialContext || { };
|
||
|
|
if (language === undefined) {
|
||
|
|
//use default language if one wasn't specified or hasn't been registered
|
||
|
|
language = languages[DEFAULT_LANGUAGE];
|
||
|
|
}
|
||
|
|
|
||
|
|
fireEvent("beforeHighlight", this, { code: unhighlightedCode, language: language, previousContext: partialContext });
|
||
|
|
|
||
|
|
analyzerContext = createAnalyzerContext(
|
||
|
|
tokenize.call(this, unhighlightedCode, language, partialContext, this.options),
|
||
|
|
partialContext,
|
||
|
|
this.options
|
||
|
|
);
|
||
|
|
|
||
|
|
analyze.call(this, analyzerContext, partialContext.index ? partialContext.index + 1 : 0);
|
||
|
|
|
||
|
|
fireEvent("afterHighlight", this, { analyzerContext: analyzerContext });
|
||
|
|
|
||
|
|
return analyzerContext;
|
||
|
|
}
|
||
|
|
|
||
|
|
function createContainer(ctx) {
|
||
|
|
var container = document.createElement("span");
|
||
|
|
container.className = ctx.options.classPrefix + ctx.language.name;
|
||
|
|
return container;
|
||
|
|
}
|
||
|
|
|
||
|
|
function analyze(analyzerContext, startIndex) {
|
||
|
|
var nodes,
|
||
|
|
lastIndex,
|
||
|
|
container,
|
||
|
|
i,
|
||
|
|
tokenName,
|
||
|
|
func,
|
||
|
|
language,
|
||
|
|
analyzer;
|
||
|
|
|
||
|
|
fireEvent("beforeAnalyze", this, { analyzerContext: analyzerContext });
|
||
|
|
|
||
|
|
if (analyzerContext.tokens.length > 0) {
|
||
|
|
analyzerContext.language = languages[analyzerContext.tokens[0].language] || languages[DEFAULT_LANGUAGE];;
|
||
|
|
nodes = [];
|
||
|
|
lastIndex = 0;
|
||
|
|
container = createContainer(analyzerContext);
|
||
|
|
|
||
|
|
for (i = startIndex; i < analyzerContext.tokens.length; i++) {
|
||
|
|
language = languages[analyzerContext.tokens[i].language] || languages[DEFAULT_LANGUAGE];
|
||
|
|
if (language.name !== analyzerContext.language.name) {
|
||
|
|
appendAll(container, analyzerContext.getNodes());
|
||
|
|
analyzerContext.resetNodes();
|
||
|
|
|
||
|
|
nodes.push(container);
|
||
|
|
analyzerContext.language = language;
|
||
|
|
container = createContainer(analyzerContext);
|
||
|
|
}
|
||
|
|
|
||
|
|
analyzerContext.index = i;
|
||
|
|
tokenName = analyzerContext.tokens[i].name;
|
||
|
|
func = "handle_" + tokenName;
|
||
|
|
|
||
|
|
analyzer = analyzerContext.getAnalyzer.call(analyzerContext) || analyzerContext.language.analyzer;
|
||
|
|
analyzer[func] ? analyzer[func](analyzerContext) : analyzer.handleToken(analyzerContext);
|
||
|
|
}
|
||
|
|
|
||
|
|
//append the last nodes, and add the final nodes to the context
|
||
|
|
appendAll(container, analyzerContext.getNodes());
|
||
|
|
nodes.push(container);
|
||
|
|
analyzerContext.resetNodes();
|
||
|
|
for (i = 0; i < nodes.length; i++) {
|
||
|
|
analyzerContext.addNode(nodes[i]);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
fireEvent("afterAnalyze", this, { analyzerContext: analyzerContext });
|
||
|
|
}
|
||
|
|
|
||
|
|
return {
|
||
|
|
//matches the language of the node to highlight
|
||
|
|
matchSunlightNode: function() {
|
||
|
|
var regex;
|
||
|
|
|
||
|
|
return function(node) {
|
||
|
|
if (!regex) {
|
||
|
|
regex = new RegExp("(?:\\s|^)" + this.options.classPrefix + "highlight-(\\S+)(?:\\s|$)");
|
||
|
|
}
|
||
|
|
|
||
|
|
return regex.exec(node.className);
|
||
|
|
};
|
||
|
|
}(),
|
||
|
|
|
||
|
|
//determines if the node has already been highlighted
|
||
|
|
isAlreadyHighlighted: function() {
|
||
|
|
var regex;
|
||
|
|
return function(node) {
|
||
|
|
if (!regex) {
|
||
|
|
regex = new RegExp("(?:\\s|^)" + this.options.classPrefix + "highlighted(?:\\s|$)");
|
||
|
|
}
|
||
|
|
|
||
|
|
return regex.test(node.className);
|
||
|
|
};
|
||
|
|
}(),
|
||
|
|
|
||
|
|
//highlights a block of text
|
||
|
|
highlight: function(code, languageId) { return highlightText.call(this, code, languageId); },
|
||
|
|
|
||
|
|
//recursively highlights a DOM node
|
||
|
|
highlightNode: function highlightRecursive(node) {
|
||
|
|
var match,
|
||
|
|
languageId,
|
||
|
|
currentNodeCount,
|
||
|
|
j,
|
||
|
|
nodes,
|
||
|
|
k,
|
||
|
|
partialContext,
|
||
|
|
container,
|
||
|
|
codeContainer;
|
||
|
|
|
||
|
|
if (this.isAlreadyHighlighted(node) || (match = this.matchSunlightNode(node)) === null) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
languageId = match[1];
|
||
|
|
currentNodeCount = 0;
|
||
|
|
fireEvent("beforeHighlightNode", this, { node: node });
|
||
|
|
for (j = 0; j < node.childNodes.length; j++) {
|
||
|
|
if (node.childNodes[j].nodeType === 3) {
|
||
|
|
//text nodes
|
||
|
|
partialContext = highlightText.call(this, node.childNodes[j].nodeValue, languageId, partialContext);
|
||
|
|
HIGHLIGHTED_NODE_COUNT++;
|
||
|
|
currentNodeCount = currentNodeCount || HIGHLIGHTED_NODE_COUNT;
|
||
|
|
nodes = partialContext.getNodes();
|
||
|
|
|
||
|
|
node.replaceChild(nodes[0], node.childNodes[j]);
|
||
|
|
for (k = 1; k < nodes.length; k++) {
|
||
|
|
node.insertBefore(nodes[k], nodes[k - 1].nextSibling);
|
||
|
|
}
|
||
|
|
} else if (node.childNodes[j].nodeType === 1) {
|
||
|
|
//element nodes
|
||
|
|
highlightRecursive.call(this, node.childNodes[j]);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
//indicate that this node has been highlighted
|
||
|
|
node.className += " " + this.options.classPrefix + "highlighted";
|
||
|
|
|
||
|
|
//if the node is block level, we put it in a container, otherwise we just leave it alone
|
||
|
|
if (getComputedStyle(node, "display") === "block") {
|
||
|
|
container = document.createElement("div");
|
||
|
|
container.className = this.options.classPrefix + "container";
|
||
|
|
|
||
|
|
codeContainer = document.createElement("div");
|
||
|
|
codeContainer.className = this.options.classPrefix + "code-container";
|
||
|
|
|
||
|
|
//apply max height if specified in options
|
||
|
|
if (this.options.maxHeight !== false) {
|
||
|
|
codeContainer.style.overflowY = "auto";
|
||
|
|
codeContainer.style.maxHeight = this.options.maxHeight + (/^\d+$/.test(this.options.maxHeight) ? "px" : "");
|
||
|
|
}
|
||
|
|
|
||
|
|
container.appendChild(codeContainer);
|
||
|
|
|
||
|
|
node.parentNode.insertBefore(codeContainer, node);
|
||
|
|
node.parentNode.removeChild(node);
|
||
|
|
codeContainer.appendChild(node);
|
||
|
|
|
||
|
|
codeContainer.parentNode.insertBefore(container, codeContainer);
|
||
|
|
codeContainer.parentNode.removeChild(codeContainer);
|
||
|
|
container.appendChild(codeContainer);
|
||
|
|
}
|
||
|
|
|
||
|
|
fireEvent("afterHighlightNode", this, {
|
||
|
|
container: container,
|
||
|
|
codeContainer: codeContainer,
|
||
|
|
node: node,
|
||
|
|
count: currentNodeCount
|
||
|
|
});
|
||
|
|
}
|
||
|
|
};
|
||
|
|
}());
|
||
|
|
|
||
|
|
//public facing object
|
||
|
|
window.Sunlight = {
|
||
|
|
version: "1.18",
|
||
|
|
Highlighter: Highlighter,
|
||
|
|
createAnalyzer: function() { return create(defaultAnalyzer); },
|
||
|
|
globalOptions: globalOptions,
|
||
|
|
|
||
|
|
highlightAll: function(options) {
|
||
|
|
var highlighter = new Highlighter(options),
|
||
|
|
tags = document.getElementsByTagName("*"),
|
||
|
|
i;
|
||
|
|
|
||
|
|
for (i = 0; i < tags.length; i++) {
|
||
|
|
highlighter.highlightNode(tags[i]);
|
||
|
|
}
|
||
|
|
},
|
||
|
|
|
||
|
|
registerLanguage: function(languageId, languageData) {
|
||
|
|
var tokenName,
|
||
|
|
embeddedLanguages,
|
||
|
|
languageName;
|
||
|
|
|
||
|
|
if (!languageId) {
|
||
|
|
throw "Languages must be registered with an identifier, e.g. \"php\" for PHP";
|
||
|
|
}
|
||
|
|
|
||
|
|
languageData = merge(merge({}, languageDefaults), languageData);
|
||
|
|
languageData.name = languageId;
|
||
|
|
|
||
|
|
//transform keywords, operators and custom tokens into a hash map
|
||
|
|
languageData.keywords = createHashMap(languageData.keywords || [], "\\b", languageData.caseInsensitive);
|
||
|
|
languageData.operators = createHashMap(languageData.operators || [], "", languageData.caseInsensitive);
|
||
|
|
for (tokenName in languageData.customTokens) {
|
||
|
|
languageData.customTokens[tokenName] = createHashMap(
|
||
|
|
languageData.customTokens[tokenName].values,
|
||
|
|
languageData.customTokens[tokenName].boundary,
|
||
|
|
languageData.caseInsensitive
|
||
|
|
);
|
||
|
|
}
|
||
|
|
|
||
|
|
//convert the embedded language object to an easier-to-use array
|
||
|
|
embeddedLanguages = [];
|
||
|
|
for (languageName in languageData.embeddedLanguages) {
|
||
|
|
embeddedLanguages.push({
|
||
|
|
parentLanguage: languageData.name,
|
||
|
|
language: languageName,
|
||
|
|
switchTo: languageData.embeddedLanguages[languageName].switchTo,
|
||
|
|
switchBack: languageData.embeddedLanguages[languageName].switchBack
|
||
|
|
});
|
||
|
|
}
|
||
|
|
|
||
|
|
languageData.embeddedLanguages = embeddedLanguages;
|
||
|
|
|
||
|
|
languages[languageData.name] = languageData;
|
||
|
|
},
|
||
|
|
|
||
|
|
isRegistered: function(languageId) { return languages[languageId] !== undefined; },
|
||
|
|
|
||
|
|
bind: function(event, callback) {
|
||
|
|
if (!events[event]) {
|
||
|
|
throw "Unknown event \"" + event + "\"";
|
||
|
|
}
|
||
|
|
|
||
|
|
events[event].push(callback);
|
||
|
|
},
|
||
|
|
|
||
|
|
util: {
|
||
|
|
last: last,
|
||
|
|
regexEscape: regexEscape,
|
||
|
|
eol: EOL,
|
||
|
|
clone: clone,
|
||
|
|
escapeSequences: ["\\n", "\\t", "\\r", "\\\\", "\\v", "\\f"],
|
||
|
|
contains: contains,
|
||
|
|
matchWord: matchWord,
|
||
|
|
createHashMap: createHashMap,
|
||
|
|
createBetweenRule: createBetweenRule,
|
||
|
|
createProceduralRule: createProceduralRule,
|
||
|
|
getNextNonWsToken: function(tokens, index) { return getNextWhile(tokens, index, 1, function(token) { return token.name === "default"; }); },
|
||
|
|
getPreviousNonWsToken: function(tokens, index) { return getNextWhile(tokens, index, -1, function(token) { return token.name === "default"; }); },
|
||
|
|
getNextWhile: function(tokens, index, matcher) { return getNextWhile(tokens, index, 1, matcher); },
|
||
|
|
getPreviousWhile: function(tokens, index, matcher) { return getNextWhile(tokens, index, -1, matcher); },
|
||
|
|
whitespace: { token: "default", optional: true },
|
||
|
|
getComputedStyle: getComputedStyle
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
//register the default language
|
||
|
|
window.Sunlight.registerLanguage(DEFAULT_LANGUAGE, { punctuation: /(?!x)x/, numberParser: EMPTY });
|
||
|
|
|
||
|
|
}(this, document));
|