912 lines
34 KiB
JavaScript
912 lines
34 KiB
JavaScript
'use strict';
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/*@
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Ox.doc <f> Generates documentation for annotated JavaScript
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(source) -> <[o]> Array of doc objects
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(file, callback) -> <u> undefined
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(files, callback) -> <u> undefined
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source <s> JavaScript source code
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file <s> JavaScript file
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files <[s]> Array of javascript files
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callback <f> Callback function
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doc <[o]> Array of doc objects
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arguments <[o]|u> Arguments (array of doc objects)
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Present if the <code>type</code> of the item is
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<code>"function"</code>.
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description <s|u> Multi-line description with optional markup
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See Ox.sanitizeHTML for details
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events <[o]|u> Events (array of doc objects)
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Present if the item fires any events
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file <s> File name
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line <n> Line number
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name <s> Name of the item
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order <[s]> Order of returns, arguments, properties
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Present if the type of the item is "function"
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properties <[o]|u> Properties (array of doc objects)
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Present if the <code>type</code> of the item is
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<code>"event"</code>, <code>"function"</code>
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or <code>"object"</code>.
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section <s|u> Section in the file
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source <[o]> Source code (array of tokens)
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column <n> Column
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line <n> Line
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type <s> Type (see Ox.tokenize for a list of types)
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value <s> Value
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returns <[o]> Return values (array of doc objects)
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Present if the <code>type</code> of the item is
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<code>"function"</code>.
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summary <s> One-line summary
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tests <[o]> Tests (array of test objects)
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expected <s> Expected result
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statement <s> Statement
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type <s> Type of the item
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<script>
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Ox.test.doc = Ox.doc([
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'//@ My.FOO <n> Magic constant',
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'My.FOO = 23;',
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'',
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'/*@',
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'My.foo <f> Returns an items\'s bar per baz',
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' Bar per baz is a good indicator of an item\'s foo-ness.',
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' (item) -> <n> Bar per baz, or NaN',
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' item <o> Any item',
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' > My.foo({bar: 1, baz: 10})',
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' 0.1',
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' > My.foo({})',
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' NaN',
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'@*' + '/',
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'My.foo = function(item) {',
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' return item.bar / item.baz;',
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'};'
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].join('\n'));
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</script>
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> Ox.test.doc[0].name
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'My.FOO'
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> Ox.test.doc[0].types
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['number']
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> Ox.test.doc[0].summary
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'Magic constant'
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> Ox.test.doc[1].description
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'Bar per baz is a good indicator of an item\'s foo-ness.'
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> Ox.test.doc[1].returns[0].types
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['number']
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> Ox.test.doc[1].returns[0].summary
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'Bar per baz, or NaN'
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> Ox.test.doc[1].tests[1]
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{expected: 'NaN', statement: 'My.foo({})'}
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@*/
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Ox.doc = (function() {
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var re = {
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item: /^(.+?) <(.+?)> (.+?)$/,
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multiline: /^\/\*\@.*?\n([\w\W]+)\n.*?\@?\*\/$/,
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script: /\n(\s*<script>s*\n[\w\W]+\n\s*<\/script>s*)/g,
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signature: /(\(.*?\)) \->(.*)/,
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singleline: /^\/\/@\s*(.*?)\s*$/,
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test: /\n(\s*> .+\n.+?)/g,
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},
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types = {
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a: 'array', b: 'boolean', d: 'date',
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e: 'element', f: 'function', n: 'number',
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o: 'object', r: 'regexp', s: 'string',
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u: 'undefined', '*': 'value', '!': 'event'
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};
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function decodeLinebreaks(match, submatch) {
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return (submatch || match).replace(/\u21A9/g, '\n');
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}
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function encodeLinebreaks(match, submatch) {
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return '\n' + (submatch || match).replace(/\n/g, '\u21A9');
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}
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function getIndent(string) {
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var indent = -1;
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while (string[++indent] == ' ') {}
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return indent;
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}
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function parseItem(string) {
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var matches = re.item.exec(string);
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// to tell a variable with default value, like
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// name <string|'<a href="...">foo</a>'> summary
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// from a line of description with tags, like
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// some <a href="...">description</a> text
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// we need to check if there is either no forward slash
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// or if the second last char is a single or double quote
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return matches && (
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matches[2].indexOf('/') == -1 ||
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'\'"'.indexOf(matches[2].slice(-2, -1)) > -1
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) ? Ox.extend(
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parseName(matches[1]),
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parseTypes(matches[2]),
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{summary: matches[3].trim()}
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) : null;
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}
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function parseName(string) {
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var matches = re.signature.exec(string);
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return matches
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? {signature: matches[1], name: matches[2].trim()}
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: {name: string};
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}
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function parseNode(node) {
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var item = parseItem(node.line), order = [];
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item.name = item.name.replace(/^\./, '');
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node.nodes && node.nodes.forEach(function(node) {
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var key, line = node.line, subitem;
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if (!/^#/.test(node.line)) {
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if (/^<script>/.test(line)) {
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item.tests = [parseScript(line)];
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} else if (/^>/.test(line)) {
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item.tests = item.tests || [];
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item.tests.push(parseTest(line));
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} else if ((subitem = parseItem(line))) {
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if (subitem.signature) {
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item.returns = item.returns || [];
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item.returns.push(parseNode(node));
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order.push('returns');
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} else if (subitem.types[0] == 'event') {
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item.events = item.events || [];
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item.events.push(parseNode(node));
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order.push('events');
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} else {
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key = item.types[0] == 'function'
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&& !/^\./.test(subitem.name)
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? 'arguments' : 'properties';
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item[key] = item[key] || [];
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item[key].push(parseNode(node));
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order.push(key);
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}
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} else {
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item.description = item.description
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? item.description + ' ' + line : line
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}
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}
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});
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item.summary = Ox.parseMarkdown(item.summary);
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if (item.description) {
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item.description = Ox.parseMarkdown(item.description)
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}
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if (item.types[0] == 'function') {
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item.order = Ox.unique(order);
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}
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return item;
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}
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function parseScript(string) {
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// remove script tags and extra indentation
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var lines = decodeLinebreaks(string).split('\n'),
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indent = getIndent(lines[1]);
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return {
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statement: lines.slice(1, -1).map(function(line, i) {
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return line.slice(indent);
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}).join('\n')
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};
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}
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function parseSource(source, file) {
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var blocks = [],
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items = [],
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section = '',
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tokens = [];
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Ox.tokenize(source).forEach(function(token) {
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var match;
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if (token.type == 'comment' && (
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match = re.multiline.exec(token.value)
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|| re.singleline.exec(token.value)
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)) {
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blocks.push(match[1]);
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tokens.push([]);
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} else if (tokens.length) {
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tokens[tokens.length - 1].push(token);
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}
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});
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blocks.forEach(function(block, i) {
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var item, lastItem,
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lines = block
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.replace(re.script, encodeLinebreaks)
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.replace(re.test, encodeLinebreaks)
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.split('\n'),
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parent,
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tree = parseTree(lines);
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if (re.item.test(tree.line)) {
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// parse the tree's root node
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item = parseNode(tree);
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item.file = file || '';
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if (section) {
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item.section = section;
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}
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if (/^[A-Z]/.test(item.name)) {
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// main item
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// include leading whitespace
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item.source = parseTokens(tokens[i]);
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item.line = item.source[0].line;
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items.push(item);
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} else {
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// property of a function item
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lastItem = items[items.length - 1];
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parent = lastItem.types[0] == 'function'
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&& lastItem.returns
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&& lastItem.returns[0].types[0] == 'object'
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? lastItem.returns[0] : lastItem;
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parent.properties = parent.properties || [];
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parent.properties.push(item);
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if (
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parent.order && !Ox.contains(parent.order, 'properties')
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) {
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parent.order.push('properties');
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}
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// include leading linebreaks and whitespace
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lastItem.source = lastItem.source.concat(
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parseTokens(tokens[i], true)
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);
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}
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} else {
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section = tree.line.split(' ')[0]
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}
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});
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return items;
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}
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function parseTest(string) {
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// fixme: we cannot properly handle tests where a string contains '\n '
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var lines = decodeLinebreaks(string).split('\n ');
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return {
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statement: lines[0].slice(2),
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expected: lines[1].trim()
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};
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}
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function parseTokens(tokens, includeLeadingLinebreaks) {
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var isLeading = true,
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isTrailing = false,
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tokens_ = [],
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types = ['linebreak', 'whitespace'];
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tokens.forEach(function(token) {
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if (isLeading && types.indexOf(token.type) > -1) {
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if (token.type == 'linebreak') {
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if (includeLeadingLinebreaks) {
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tokens_.push(token);
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} else {
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tokens_ = [];
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}
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} else {
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tokens_.push(token);
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}
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} else {
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tokens_.push(token);
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isLeading = false;
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if (types.indexOf(token.type) == -1) {
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isTrailing = true;
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}
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}
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});
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if (isTrailing) {
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while (types.indexOf(tokens_[tokens_.length - 1].type) > -1) {
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tokens_.pop();
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}
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}
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return tokens_;
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}
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function parseTree(lines) {
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// parses indented lines into a tree structure, like
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// {line: "...", nodes: [{line: "...", nodes: [...]}]}
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var branches = [],
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indent,
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node = {
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// chop the root line
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line: lines.shift().trim()
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};
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if (lines.length) {
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indent = getIndent(lines[0]);
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lines.forEach(function(line) {
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if (getIndent(line) == indent) {
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// line is a child,
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// make it the root line of a new branch
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branches.push([line]);
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} else {
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// line is a descendant of the last child,
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// add it to the last branch
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branches[branches.length - 1].push(line);
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}
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});
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node.nodes = branches.map(function(lines) {
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return parseTree(lines);
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});
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}
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return node;
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}
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function parseTypes(string) {
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// returns {types: [""]}
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// or {types: [""], default: ""}
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// or {types: [""], super: ""}
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var array,
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isArray,
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ret = {types: []},
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type;
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// only split by ':' if there is no default string value
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if ('\'"'.indexOf(string.slice(-2, -1)) == -1) {
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array = string.split(':');
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string = array[0];
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if (array.length == 2) {
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ret['super'] = array[1];
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}
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}
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string.split('|').forEach(function(string) {
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var unwrapped = unwrap(string);
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if (unwrapped in types) {
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ret.types.push(wrap(types[unwrapped]))
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} else if (
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(type = Ox.filter(Ox.values(types), function(type) {
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return Ox.startsWith(type, unwrapped);
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})).length
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) {
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ret.types.push(wrap(type[0]));
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} else {
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ret['default'] = string;
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}
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});
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function unwrap(string) {
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return (isArray = /^\[.+\]$/.test(string))
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? string.slice(1, -1) : string;
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}
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function wrap(string) {
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return isArray ? '[' + string + 's' + ']' : string;
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}
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return ret;
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}
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return function(argument, callback) {
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var counter = 0, items = [], ret;
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if (arguments.length == 1) {
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ret = parseSource(argument);
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} else {
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argument = Ox.makeArray(argument);
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argument.forEach(function(file) {
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Ox.get(file, function(source) {
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items = items.concat(
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parseSource(source, file.split('?')[0])
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);
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++counter == argument.length && callback(items);
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});
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})
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}
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return ret;
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}
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}());
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/*@
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Ox.identify <f> Returns the type of a JavaScript identifier
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(str) -> <s> Type
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Type can be <code>constant</code>, <code>identifier</code>,
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<code>keyword</code>, <code>method</code>, <code>object</code> or
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<code>property</code>
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@*/
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Ox.identify = (function() {
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// see https://developer.mozilla.org/en/JavaScript/Reference
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var identifiers = {
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constant: [
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// Math
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'E', 'LN2', 'LN10', 'LOG2E', 'LOG10E', 'PI', 'SQRT1_2', 'SQRT2',
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// Number
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'MAX_VALUE', 'MIN_VALUE', 'NEGATIVE_INFINITY', 'POSITIVE_INFINITY'
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],
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method: [
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// Array
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'concat',
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'every',
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'filter', 'forEach',
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'join',
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'lastIndexOf',
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'indexOf', 'isArray',
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'map',
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'pop', 'push',
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'reduce', 'reduceRight', 'reverse',
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'shift', 'slice', 'some', 'sort', 'splice',
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'unshift',
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// Date
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'getDate', 'getDay', 'getFullYear', 'getHours',
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'getMilliseconds', 'getMinutes', 'getMonth', 'getSeconds',
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'getTime', 'getTimezoneOffset',
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'getUTCDate', 'getUTCDay', 'getUTCFullYear', 'getUTCHours',
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'getUTCMilliseconds', 'getUTCMinutes', 'getUTCMonth', 'getUTCSeconds',
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'now',
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'parse',
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'setDate', 'setFullYear', 'setHours', 'setMilliseconds',
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'setMinutes', 'setMonth', 'setSeconds', 'setTime',
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'setUTCDate', 'setUTCFullYear', 'setUTCHours', 'setUTCMilliseconds',
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'setUTCMinutes', 'setUTCMonth', 'setUTCSeconds',
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'toDateString', 'toJSON', 'toLocaleDateString', 'toLocaleString',
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'toLocaleTimeString', 'toTimeString', 'toUTCString',
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'UTC',
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// Function
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'apply', 'bind', 'call', 'isGenerator',
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// JSON
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'parse', 'stringify',
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// Math
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'abs', 'acos', 'asin', 'atan', 'atan2',
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'ceil', 'cos',
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'exp',
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'floor',
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'log',
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'max', 'min',
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'pow',
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'random', 'round',
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'sin', 'sqrt',
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'tan',
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// Number
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'toExponential', 'toFixed', 'toLocaleString', 'toPrecision',
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// Object
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'create',
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'defineProperty', 'defineProperties',
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'freeze',
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'getOwnPropertyDescriptor', 'getOwnPropertyNames', 'getPrototypeOf',
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'hasOwnProperty',
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'isExtensible', 'isFrozen', 'isPrototypeOf', 'isSealed',
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'keys',
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'preventExtensions', 'propertyIsEnumerable',
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'seal',
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'toLocaleString', 'toString',
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'valueOf',
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// RegExp
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'exec', 'test',
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// String
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'charAt', 'charCodeAt', 'concat',
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'fromCharCode',
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'indexOf',
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'lastIndexOf', 'localeCompare',
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'match',
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'replace',
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'search', 'slice', 'split', 'substr', 'substring',
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'toLocaleLowerCase', 'toLocaleUpperCase',
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'toLowerCase', 'toUpperCase', 'trim',
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// Window
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'addEventListener', 'alert', 'atob',
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'blur', 'btoa',
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'clearInterval', 'clearTimeout', 'close', 'confirm',
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'dispatchEvent',
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'escape',
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'find', 'focus',
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'getComputedStyle', 'getSelection',
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'moveBy', 'moveTo',
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'open',
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'postMessage', 'print', 'prompt',
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'removeEventListener', 'resizeBy', 'resizeTo',
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'scroll', 'scrollBy', 'scrollTo',
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'setCursor', 'setInterval', 'setTimeout', 'stop',
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'unescape'
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],
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object: [
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'Array',
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'Boolean',
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'Date', 'decodeURI', 'decodeURIComponent',
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'encodeURI', 'encodeURIComponent', 'Error', 'eval', 'EvalError',
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'Function',
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'Infinity', 'isFinite', 'isNaN',
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'JSON',
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'Math',
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'NaN', 'Number',
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'Object',
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'parseFloat', 'parseInt',
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'RangeError', 'ReferenceError', 'RegExp',
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'String', 'SyntaxError',
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'TypeError',
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'undefined', 'URIError',
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'window'
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],
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property: [
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// Function
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'constructor', 'length', 'prototype',
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// RegExp
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'global', 'ignoreCase', 'lastIndex', 'multiline', 'source',
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// Window
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'applicationCache',
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'closed', 'console', 'content', 'crypto',
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'defaultStatus', 'document',
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'frameElement', 'frames',
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'history',
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'innerHeight', 'innerWidth',
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'length', 'location', 'locationbar', 'localStorage',
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'menubar',
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'name', 'navigator',
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'opener', 'outerHeight', 'outerWidth',
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'pageXOffset', 'pageYOffset', 'parent', 'personalbar',
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'screen', 'screenX', 'screenY', 'scrollbars', 'scrollX', 'scrollY',
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'self', 'sessionStorage', 'status', 'statusbar',
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'toolbar', 'top'
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]
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|
};
|
|
return function(identifier) {
|
|
var ret;
|
|
if (Ox.KEYWORDS.indexOf(identifier) > -1) {
|
|
ret = 'keyword'
|
|
} else {
|
|
ret = 'identifier'
|
|
Ox.forEach(identifiers, function(words, type) {
|
|
if (words.indexOf(identifier) > -1) {
|
|
ret = type;
|
|
Ox.Break();
|
|
}
|
|
});
|
|
}
|
|
return ret;
|
|
};
|
|
}());
|
|
|
|
/*@
|
|
Ox.minify <f> Minifies JavaScript
|
|
(source) -> <s> Minified JavaScript
|
|
(file, callback) -> <u> undefined
|
|
source <s> JavaScript source
|
|
file <s> JavaScript file
|
|
callback <f> Callback function
|
|
> Ox.minify('for (a in b)\n{\t\tc = void 0;\n}')
|
|
'for(a in b)\n{c=void 0;}'
|
|
> Ox.minify('return a; return 0; return "";')
|
|
'return a;return 0;return"";'
|
|
> Ox.minify('return\na;\nreturn\n0;\nreturn\n"";')
|
|
'return\na;return\n0;return\n"";'
|
|
@*/
|
|
Ox.minify = function() {
|
|
// see https://github.com/douglascrockford/JSMin/blob/master/README
|
|
// and http://inimino.org/~inimino/blog/javascript_semicolons
|
|
if (arguments.length == 1) {
|
|
return minify(arguments[0]);
|
|
} else {
|
|
Ox.get(arguments[0], function(source) {
|
|
arguments[1](minify(source));
|
|
});
|
|
}
|
|
function minify(source) {
|
|
var tokens = Ox.tokenize(source),
|
|
length = tokens.length,
|
|
ret = '';
|
|
tokens.forEach(function(token, i) {
|
|
var next, nextToken, prevToken;
|
|
if (['linebreak', 'whitespace'].indexOf(token.type) > -1) {
|
|
prevToken = i == 0 ? null : tokens[i - 1];
|
|
next = i + 1;
|
|
while (
|
|
next < length && ['comment', 'linebreak', 'whitespace']
|
|
.indexOf(tokens[next].type) > -1
|
|
) {
|
|
next++;
|
|
}
|
|
nextToken = next == length ? null : tokens[next];
|
|
}
|
|
if (token.type == 'linebreak') {
|
|
// replace a linebreak between two tokens that are identifiers
|
|
// or numbers or strings or unary operators or grouping
|
|
// operators with a single newline, otherwise remove it
|
|
if (
|
|
prevToken && nextToken && (
|
|
['identifier', 'number', 'string'].indexOf(prevToken.type) > -1
|
|
|| ['++', '--', ')', ']', '}'].indexOf(prevToken.value) > -1
|
|
) && (
|
|
['identifier', 'number', 'string'].indexOf(nextToken.type) > -1
|
|
|| ['+', '-', '++', '--', '~', '!', '(', '[', '{'].indexOf(nextToken.value) > -1
|
|
)
|
|
) {
|
|
ret += '\n';
|
|
}
|
|
} else if (token.type == 'whitespace') {
|
|
// replace whitespace between two tokens that are identifiers or
|
|
// numbers, or between a token that ends with "+" or "-" and one
|
|
// that begins with "+" or "-", with a single space, otherwise
|
|
// remove it
|
|
if (
|
|
prevToken && nextToken && ((
|
|
['identifier', 'number'].indexOf(prevToken.type) > -1
|
|
&& ['identifier', 'number'].indexOf(nextToken.type) > -1
|
|
) || (
|
|
['+', '-', '++', '--'].indexOf(prevToken.value) > -1
|
|
&& ['+', '-', '++', '--'].indexOf(nextToken.value) > -1
|
|
))
|
|
) {
|
|
ret += ' ';
|
|
}
|
|
} else if (token.type != 'comment') {
|
|
// remove comments and leave all other tokens untouched
|
|
ret += token.value;
|
|
}
|
|
});
|
|
return ret;
|
|
}
|
|
};
|
|
|
|
/*@
|
|
Ox.test <f> Takes JavaScript, runs inline tests, returns results
|
|
(source, callback) -> <[o]> Array of results
|
|
(file, callback) -> <u> undefined
|
|
(files, callback) -> <u> undefined
|
|
(doc, callback) -> <u> undefined
|
|
(docs, callback) -> <u> undefined
|
|
source <s> JavaScript source
|
|
file <s> JavaScript file
|
|
files <[s]> Array of JavaScript files
|
|
doc <o> Documentation object (as returned by Ox.doc)
|
|
docs <[o]> Array of documentation objects (as returned by Ox.doc)
|
|
callback <f> Callback function
|
|
results <[o]> Array of results
|
|
actual <s> Actual result
|
|
expected <s> Expected result
|
|
name <s> Item name
|
|
section <s|u> Section in the file
|
|
statement <s> Test statement
|
|
passed <b> True if actual result and expected result are equal
|
|
.data <o> undocumented
|
|
<script>
|
|
Ox.test.foo = function(item) {
|
|
return item.bar / item.baz;
|
|
};
|
|
Ox.test.source = [
|
|
'/*@',
|
|
'Ox.test.foo <f> Returns an items\'s bar per baz',
|
|
' Bar per baz is a good indicator of an item\'s foo-ness.',
|
|
' (item) -> <n> Bar per baz, or NaN',
|
|
' item <o> Any item',
|
|
' > Ox.test.foo({bar: 1, baz: 10})',
|
|
' 0.1',
|
|
' > Ox.test.foo({})',
|
|
' NaN',
|
|
'@*' + '/',
|
|
'Ox.test.foo = function(item) {',
|
|
' return item.bar / item.baz;',
|
|
'};'
|
|
].join('\n');
|
|
</script>
|
|
> Ox.test(Ox.test.source, function(r) { Ox.test(r[0].passed, true); })
|
|
undefined
|
|
@*/
|
|
Ox.test = function(argument, callback) {
|
|
// Ansynchronous functions can be tested by calling Ox.test(actual,
|
|
// expected) in the callback. If Ox.test is called inside a test statement
|
|
// (unless at the beginning of the statement, which is a test for Ox.test),
|
|
// the call to Ox.test is patched by inserting the test statement string as
|
|
// the first argument of the Ox.test call, and Ox.test will branch when
|
|
// called with three arguments.
|
|
function runTests(items) {
|
|
var id = Ox.uid(), regexp = /(.+Ox\.test\()/, results = [];
|
|
// We have to create a globally accessible object so that synchronous
|
|
// and asynchronous tests can read, write and return the same data.
|
|
Ox.test.data[id] = {
|
|
callback: callback,
|
|
done: false,
|
|
results: results,
|
|
tests: {}
|
|
};
|
|
items.forEach(function(item) {
|
|
item.tests && item.tests.some(function(test) {
|
|
return test.expected;
|
|
}) && item.tests.forEach(function(test) {
|
|
var actual, isAsync = regexp.test(test.statement);
|
|
if (isAsync) {
|
|
// Add a pending test
|
|
Ox.test.data[id].tests[test.statement] = {
|
|
name: item.name,
|
|
section: item.section
|
|
};
|
|
// Patch the test statement
|
|
test.statement = test.statement.replace(
|
|
regexp,
|
|
"$1'" + test.statement.replace(/'/g, "\\'") + "', "
|
|
);
|
|
}
|
|
if (test.expected || test.statement.match(/Ox\.test\./)) {
|
|
// Eval the statement, unless it's a script tag that doesn't
|
|
// add a property to Ox.test
|
|
Ox.Log('TEST', test.statement);
|
|
actual = eval(test.statement);
|
|
}
|
|
if (!isAsync && test.expected) {
|
|
Ox.test.data[id].results.push({
|
|
actual: JSON.stringify(actual),
|
|
expected: test.expected,
|
|
name: item.name,
|
|
section: item.section,
|
|
statement: test.statement,
|
|
passed: Ox.isEqual(
|
|
actual, eval('(' + test.expected + ')')
|
|
)
|
|
});
|
|
}
|
|
});
|
|
});
|
|
Ox.test.data[id].done = true;
|
|
if (Ox.isEmpty(Ox.test.data[id].tests)) {
|
|
callback(Ox.test.data[id].results);
|
|
}
|
|
}
|
|
if (arguments.length == 2) {
|
|
if (Ox.typeOf(argument) == 'string' && Ox.contains(argument, '\n')) {
|
|
// source code
|
|
runTests(Ox.doc(argument))
|
|
} else {
|
|
argument = Ox.makeArray(argument);
|
|
if (Ox.typeOf(argument[0]) == 'string') {
|
|
// files
|
|
Ox.doc(argument, runTests);
|
|
} else {
|
|
// doc objects
|
|
runTests(argument);
|
|
}
|
|
}
|
|
} else {
|
|
var statement = arguments[0],
|
|
result = arguments[1],
|
|
expected = arguments[2],
|
|
id, test;
|
|
Ox.forEach(Ox.test.data, function(v, k) {
|
|
if (v.tests[statement]) {
|
|
id = k;
|
|
test = v.tests[statement];
|
|
Ox.Break();
|
|
}
|
|
});
|
|
Ox.test.data[id].results.push(Ox.extend(test, {
|
|
actual: result,
|
|
expected: expected,
|
|
statement: statement,
|
|
passed: Ox.isEqual(result, expected)
|
|
}));
|
|
delete Ox.test.data[id].tests[statement];
|
|
if (Ox.test.data[id].done && Ox.isEmpty(Ox.test.data[id].tests)) {
|
|
Ox.test.data[id].callback(Ox.test.data[id].results);
|
|
}
|
|
}
|
|
};
|
|
Ox.test.data = {};
|
|
|
|
/*@
|
|
Ox.tokenize <f> Tokenizes JavaScript
|
|
(source) -> <[o]> Array of tokens
|
|
column <n> Column of the token
|
|
line <n> Line of the token
|
|
type <s> Type of the token
|
|
Type can be <code>"comment"</code>, <code>"error"</code>,
|
|
<code>"identifier"</code>, <code>"linebreak"</code>,
|
|
<code>"number"</code>, <code>"operator"</code>,
|
|
<code>"regexp"</code>, <code>"string"</code> or
|
|
<code>"whitespace"</code>
|
|
value <s> Value of the token
|
|
source <s> JavaScript source code
|
|
> Ox.tokenize('// comment\nvar foo = bar / baz;').length
|
|
14
|
|
> Ox.tokenize('return /foo/g;')[2].value.length
|
|
6
|
|
@*/
|
|
// FIXME: numbers (hex, exp, etc.)
|
|
Ox.tokenize = (function() {
|
|
|
|
// see https://github.com/mozilla/narcissus/blob/master/lib/lexer.js
|
|
|
|
var comment = ['//', '/*'],
|
|
identifier = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ$_',
|
|
linebreak = '\n\r',
|
|
number = '0123456789',
|
|
operator = [
|
|
// arithmetic
|
|
'+', '-', '*', '/', '%', '++', '--',
|
|
// assignment
|
|
'=', '+=', '-=', '*=', '/=', '%=',
|
|
'&=', '|=', '^=', '<<=', '>>=', '>>>=',
|
|
// bitwise
|
|
'&', '|', '^', '~', '<<', '>>', '>>>',
|
|
// comparison
|
|
'==', '!=', '===', '!==', '>', '>=', '<', '<=',
|
|
// conditional
|
|
'?', ':',
|
|
// grouping
|
|
'(', ')', '[', ']', '{', '}',
|
|
// logical
|
|
'&&', '||', '!',
|
|
// other
|
|
'.', ',', ';'
|
|
],
|
|
regexp = 'abcdefghijklmnopqrstuvwxyz',
|
|
string = '\'"',
|
|
whitespace = ' \t';
|
|
|
|
function isRegExp(tokens) {
|
|
// Returns true if the current token is the beginning of a RegExp, as
|
|
// opposed to the beginning of an operator
|
|
var i = tokens.length - 1, isRegExp, token
|
|
// Scan back to the previous significant token, or to the beginning of
|
|
// the source
|
|
while (i >= 0 && [
|
|
'comment', 'linebreak', 'whitespace'
|
|
].indexOf(tokens[i].type) > -1) {
|
|
i--;
|
|
}
|
|
if (i == -1) {
|
|
// Source begins with a forward slash
|
|
isRegExp = true;
|
|
} else {
|
|
token = tokens[i];
|
|
isRegExp = (
|
|
token.type == 'identifier'
|
|
&& Ox.identify(token.value) == 'keyword'
|
|
&& ['false', 'null', 'true'].indexOf(token.value) == -1
|
|
) || (
|
|
token.type == 'operator'
|
|
&& ['++', '--', ')', ']', '}'].indexOf(token.value) == -1
|
|
)
|
|
}
|
|
return isRegExp;
|
|
}
|
|
|
|
return function(source) {
|
|
var char,
|
|
column = 1,
|
|
cursor = 0,
|
|
delimiter,
|
|
length = source.length,
|
|
line = 1,
|
|
lines,
|
|
next,
|
|
tokens = [],
|
|
start,
|
|
type,
|
|
value;
|
|
source = source.replace(/\r\n/g, '\n').replace(/\r/g, '\n');
|
|
while (cursor < length) {
|
|
start = cursor;
|
|
char = source[cursor];
|
|
if (comment.indexOf(delimiter = char + source[cursor + 1]) > -1) {
|
|
type = 'comment';
|
|
++cursor;
|
|
while (char = source[++cursor]) {
|
|
if (delimiter == '//' && char == '\n') {
|
|
break;
|
|
} else if (delimiter == '/*' && char + source[cursor + 1] == '*/') {
|
|
cursor += 2;
|
|
break;
|
|
}
|
|
}
|
|
} else if (identifier.indexOf(char) > -1) {
|
|
type = 'identifier';
|
|
while ((identifier + number).indexOf(source[++cursor]) > -1) {}
|
|
} else if (linebreak.indexOf(char) > -1) {
|
|
type = 'linebreak';
|
|
while (linebreak.indexOf(source[++cursor]) > -1) {}
|
|
} else if (number.indexOf(char) > -1) {
|
|
type = 'number';
|
|
while ((number + '.').indexOf(source[++cursor]) > -1) {}
|
|
} else if (char == '/' && isRegExp(tokens)) {
|
|
type = 'regexp';
|
|
while ((char = source[++cursor]) != '/' && cursor < length) {
|
|
char == '\\' && ++cursor;
|
|
}
|
|
while (regexp.indexOf(source[++cursor]) > -1) {}
|
|
} else if (operator.indexOf(char) > -1) {
|
|
type = 'operator';
|
|
while (operator.indexOf(char += source[++cursor]) > -1 && cursor < length) {}
|
|
} else if (string.indexOf(delimiter = char) > -1) {
|
|
type = 'string';
|
|
while ((char = source[++cursor]) != delimiter && cursor < length) {
|
|
char == '\\' && ++cursor;
|
|
}
|
|
++cursor;
|
|
} else if (whitespace.indexOf(char) > -1) {
|
|
type = 'whitespace';
|
|
while (whitespace.indexOf(source[++cursor]) > -1) {}
|
|
} else {
|
|
type = 'error';
|
|
++cursor;
|
|
}
|
|
value = source.slice(start, cursor);
|
|
if (
|
|
type == 'error' && tokens.length
|
|
&& tokens[tokens.length - 1].type == 'error'
|
|
) {
|
|
tokens[tokens.length - 1].value += value;
|
|
} else {
|
|
tokens.push(
|
|
{column: column, line: line, type: type, value: value}
|
|
);
|
|
}
|
|
if (type == 'comment') {
|
|
lines = value.split('\n');
|
|
column = lines[lines.length - 1].length;
|
|
line += lines.length - 1;
|
|
} else if (type == 'linebreak') {
|
|
column = 1;
|
|
line += value.length;
|
|
} else {
|
|
column += value.length;
|
|
}
|
|
}
|
|
return tokens;
|
|
};
|
|
|
|
}());
|