'use strict';
/*@
Ox.doc <f> Generates documentation for annotated JavaScript
(source) -> <[o]> Array of doc objects
arguments <[o]|u> Arguments (array of doc objects)
Present if the <code>type</code> of the item is
<code>"function"</code>.
description <s|u> Multi-line description with optional markup
See Ox.parseHTML for details
events <[o]|u> Events (array of doc objects)
Present if the item fires any events
file <s> File name
line <n> Line number
name <s> Name of the item
properties <[o]|u> Properties (array of doc objects)
Present if the <code>type</code> of the item is
<code>"event"</code>, <code>"function"</code>
or <code>"object"</code>.
section <s|u> Section in the file
source <[o]> Source code (array of tokens)
length <n> Length of the token
offset <n> Offset of the token
type <s> Type of the token
See Ox.tokenize for list of types
summary <s> One-line summary
usage <[o]> Usage (array of doc objects)
Present if the <code>type</code> of the item is
<code>"function"</code>.
type <s> Type of the item
(file, callback) -> <u> undefined
(files, callback) -> <u> undefined
source <s> JavaScript source code
file <s> JavaScript file
files <[s]> Array of javascript files
callback <f> Callback function
doc <[o]> Array of doc objects
# > Ox.doc("//@ My.FOO <n> Magic constant\nMy.FOO = 23;")
# [{"name": "Ox.foo", "summary": "just some string", "type": "string"}]
@*/
Ox.doc = (function() {
// fixme: dont require the trailing '@'
var re = {
item: /^(.+?) <(.+?)> (.+)$/,
multiline: /^\/\*\@.*?\n([\w\W]+)\n.*?\@\*\/$/,
script: /\n(\s*<script>s*\n[\w\W]+\n\s*<\/script>s*)/g,
singleline: /^\/\/@\s*(.*?)\s*$/,
test: /\n(\s*> .+\n.+?)/g,
usage: /\(.*?\)/
},
types = {
a: 'array', b: 'boolean', d: 'date',
e: 'element', f: 'function', n: 'number',
o: 'object', r: 'regexp', s: 'string',
u: 'undefined', '*': 'value', '!': 'event'
};
function decodeLinebreaks(match, submatch) {
return (submatch || match).replace(/\u21A9/g, '\n');
}
function encodeLinebreaks(match, submatch) {
return '\n' + (submatch || match).replace(/\n/g, '\u21A9');
}
function getIndent(str) {
var indent = -1;
while (str[++indent] == ' ') {}
return indent;
}
function parseItem(str) {
var matches = re.item.exec(str);
// to tell a variable with default value, like
// name <string|'<a href="...">foo</a>'> summary
// from a line of description with tags, like
// some <a href="...">description</a> text
// we need to check if there is either no forward slash
// or if the second last char is a single or double quote
return matches && (
matches[2].indexOf('/') == -1 ||
'\'"'.indexOf(matches[2].substr(-2, 1)) > -1
) ? Ox.extend({
name: parseName(matches[1].trim()),
summary: matches[3].trim()
}, parseType(matches[2])) : null;
}
function parseName(str) {
var matches = re.usage.exec(str);
return matches ? matches[0] : str;
}
function parseNode(node) {
var item = parseItem(node.line), subitem;
node.nodes && node.nodes.forEach(function(node) {
var key, line = node.line, subitem;
if (!/^#/.test(node.line)) {
if (/^<script>/.test(line)) {
item.examples = [parseScript(line)];
} else if (/^>/.test(line)) {
item.examples = item.examples || [];
item.examples.push(parseTest(line));
} else if ((subitem = parseItem(line))) {
if (/^\(/.test(subitem.name)) {
item.usage = item.usage || [];
item.usage.push(parseNode(node));
} else if (subitem.types[0] == 'event') {
item.events = item.events || [];
item.events.push(parseNode(node));
} else {
key = item.types[0] == 'function'
? 'arguments' : 'properties'
item[key] = item[key] || [];
item[key].push(parseNode(node));
}
} else {
item.description = item.description
? item.description + ' ' + line : line
}
}
});
return item;
}
function parseScript(str) {
// remove script tags and extra indentation
var lines = decodeLinebreaks(str).split('\n'),
indent = getIndent(lines[1]);
return {
statement: Ox.map(lines, function(line, i) {
return i && i < lines.length - 1 ?
line.substr(indent) : null;
}).join('\n')
};
}
function parseSource(source, file) {
var blocks = [],
items = [],
section = '',
tokens = [];
Ox.tokenize(source).forEach(function(token) {
var match;
token.source = source.substr(token.offset, token.length);
if (token.type == 'comment' && (
match = re.multiline.exec(token.source)
|| re.singleline.exec(token.source)
)) {
blocks.push(match[1]);
tokens.push([]);
} else if (tokens.length) {
tokens[tokens.length - 1].push(token);
}
});
blocks.forEach(function(block, i) {
var item, lastItem,
lines = block
.replace(re.script, encodeLinebreaks)
.replace(re.test, encodeLinebreaks)
.split('\n'),
tree = parseTree(lines);
if (re.item.test(tree.line)) {
// parse the tree's root node
item = parseNode(tree);
item.file = file || '';
if (section) {
item.section = section;
}
if (/^[A-Z]/.test(item.name)) {
// main item
// include leading whitespace
item.source = parseTokens(tokens[i]);
item.line = source.substr(0, item.source[0].offset)
.split('\n').length;
items.push(item);
} else {
// property of a function item
lastItem = items[items.length - 1];
lastItem.properties = lastItem.properties || [];
lastItem.properties.push(item);
// include leading linebreaks and whitespace
lastItem.source = Ox.merge(
lastItem.source, parseTokens(tokens[i], true)
);
}
} else {
section = tree.line.split(' ')[0]
}
});
return items;
}
function parseTest(str) {
// fixme: we cannot properly handle tests where a string contains '\n '
var lines = decodeLinebreaks(str).split('\n ');
return {
statement: lines[0].substr(2),
result: lines[1].trim()
};
}
function parseTokens(tokens, includeLeadingLinebreaks) {
var isLeading = true,
isTrailing = false,
tokens_ = [],
types = ['linebreak', 'whitespace'];
tokens.forEach(function(token) {
if (isLeading && types.indexOf(token.type) > -1) {
if (token.type == 'linebreak') {
if (includeLeadingLinebreaks) {
tokens_.push(token);
} else {
tokens_ = [];
}
} else {
tokens_.push(token);
}
} else {
tokens_.push(token);
isLeading = false;
if (types.indexOf(token.type) == -1) {
isTrailing = true;
}
}
});
if (isTrailing) {
while (types.indexOf(tokens_[tokens_.length - 1].type) > -1) {
tokens_.pop();
}
}
return tokens_;
}
function parseTree(lines) {
// parses indented lines into a tree structure, like
// {line: "...", nodes: [{line: "...", nodes: [...]}]}
var branches = [],
indent,
node = {
// chop the root line
line: lines.shift().trim()
};
if (lines.length) {
indent = getIndent(lines[0]);
lines.forEach(function(line) {
if (getIndent(line) == indent) {
// line is a child,
// make it the root line of a new branch
branches.push([line]);
} else {
// line is a descendant of the last child,
// add it to the last branch
branches[branches.length - 1].push(line);
}
});
node.nodes = branches.map(function(lines) {
return parseTree(lines);
});
}
return node;
}
function parseType(str) {
// returns {types: [""]}
// or {types: [""], default: ""}
// or {types: [""], super: ""}
var isArray,
ret = {types: []},
split,
type;
// only split by ':' if there is no default string value
if ('\'"'.indexOf(str.substr(-2, 1)) == -1) {
split = str.split(':');
str = split[0];
if (split.length == 2) {
ret.super = split[1];
}
}
str.split('|').forEach(function(str) {
var unwrapped = unwrap(str);
if (unwrapped in types) {
ret.types.push(wrap(types[unwrapped]))
} else if (
(type = Ox.filter(Ox.values(types), function(type) {
return Ox.startsWith(type, unwrapped);
})).length
) {
ret.types.push(wrap(type[0]));
} else {
ret['default'] = str;
}
});
function unwrap(str) {
return (isArray = /^\[.+\]$/.test(str)) ? Ox.sub(str, 1, -1) : str;
}
function wrap(str) {
return isArray ? '[' + str + 's' + ']' : str;
}
return ret;
}
return function(/* source | file, callback | files, callback*/) {
var source = arguments.length == 1 ? arguments[0] : void 0,
files = arguments.length == 2 ? Ox.toArray(arguments[0]) : void 0,
callback = arguments[1],
counter = 0, items = [];
files && files.forEach(function(file) {
Ox.get(file, function(source) {
items = Ox.merge(items, parseSource(source, file));
++counter == files.length && callback(items);
});
});
return source ? parseSource(source) : void 0;
}
}());
/*@
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;\nreturn\n0;\nreturn\n"";\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;
function isIdentifierOrNumber(token) {
return [
'constant', 'identifier', 'keyword',
'number', 'method', 'object', 'property'
].indexOf(token.type) > -1;
}
return Ox.map(tokens, function(token, i) {
var ret = source.substr(token.offset, token.length);
if (token.type == 'comment') {
if (ret[1] == '/') {
// replace line comment with newline
ret = i == length - 1 || tokens[i + 1].type == 'linebreak'
? null : '\n';
} else {
// replace block comment with space
ret = i == length - 1 || tokens[i + 1].type == 'whitespace'
? null : ' ';
}
}
if (token.type == 'linebreak' || token.type == 'whitespace') {
// remove consecutive linebreaks or whitespace
ret = ret[0];
}
if (
// strip linebreaks, except between two tokens that
// are both either identifier or number or string
// or identifier in brackets or identifier with
// unary operator or array literal or object literal
//
// strip linebreaks, except after "break", "continue",
// "return", "++" or "--", where the linebreak becomes
// a semicolon
token.type == 'linebreak' && (
i == 0 || i == length - 1
|| (
!isIdentifierOrNumber(tokens[i - 1])
&& !tokens[i - 1].type == 'string'
&& [')', ']', '}', '++', '--'].indexOf(
source.substr(tokens[i - 1].offset, tokens[i - 1].length)
) == -1
)
|| (
!isIdentifierOrNumber(tokens[i + 1])
&& ['(', '[', '{', '+', '-', '++', '--'].indexOf(
source.substr(tokens[i + 1].offset, tokens[i + 1].length)
) == -1
)
)
) {
ret = null;
} else if (
// strip whitespace, except between two tokens
// that are both either identifier or number
token.type == 'whitespace' && (
i == 0 || i == length - 1
|| !isIdentifierOrNumber(tokens[i - 1])
|| !isIdentifierOrNumber(tokens[i + 1])
)
) {
ret = null;
}
return ret;
}).join('');
}
};
/*@
Ox.test <f> Takes JavaScript, runs inline tests, returns results
@*/
Ox.test = function(file, callback) {
Ox.doc(file, function(items) {
var tests = [];
items.forEach(function(item) {
item.examples && item.examples.forEach(function(example) {
Ox.Log('TEST', example.statement)
var actual = eval(example.statement);
if (example.result) {
tests.push({
actual: JSON.stringify(actual),
expected: example.result,
name: item.name,
section: item.section,
statement: example.statement,
passed: Ox.isEqual(eval(
'Ox.test.result = ' + example.result
), actual)
});
}
});
});
callback(tests);
});
};
/*@
Ox.tokenize <f> Tokenizes JavaScript
(source) -> <[o]> Array of tokens
length <n> Length of the token
offset <n> Offset of the token
type <s> Type of the token
Type can be <code>"comment"</code>, <code>"constant"</code>,
<code>"identifier"</code>, <code>"keyword"</code>,
<code>"linebreak"</code>, <code>"method"</code>,
<code>"number"</code>, <code>"object"</code>,
<code>"operator"</code>, <code>"property"</code>,
<code>"regexp"</code>, <code>"string"</code>
or <code>"whitespace"</code>
source <s> JavaScript source code
@*/
// FIXME: constant/method/object/property is of interest
// for syntax highlighting, but may not belong here
Ox.tokenize = (function() {
// see https://github.com/mozilla/narcissus/blob/master/lib/jslex.js
// and https://developer.mozilla.org/en/JavaScript/Reference
var identifier = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ$_',
linebreak = '\n\r',
number = '0123456789',
operator = [
// arithmetic
'+', '-', '*', '/', '%', '++', '--',
// assignment
'=', '+=', '-=', '*=', '/=', '%=',
'&=', '|=', '^=', '<<=', '>>=', '>>>=',
// bitwise
'&', '|', '^', '~', '<<', '>>', '>>>',
// comparison
'==', '!=', '===', '!==', '>', '>=', '<', '<=',
// conditional
'?', ':',
// grouping
'(', ')', '[', ']', '{', '}',
// logical
'&&', '||', '!',
// other
'.', ',', ';'
],
regexp = 'abcdefghijklmnopqrstuvwxyz',
string = '\'"',
whitespace = ' \t',
word = {
constant: [
// Math
'E', 'LN2', 'LN10', 'LOG2E', 'LOG10E', 'PI', 'SQRT1_2', 'SQRT2',
// Number
'MAX_VALUE', 'MIN_VALUE', 'NEGATIVE_INFINITY', 'POSITIVE_INFINITY'
],
keyword: [
'break',
'case', 'catch', 'class', 'const', 'continue',
'debugger', 'default', 'delete', 'do',
'else', 'enum', 'export', 'extends',
'false', 'finally', 'for', 'function',
'if', 'implements', 'import', 'in', 'instanceof', 'interface',
'let', 'module',
'new', 'null',
'package', 'private', 'protected', 'public',
'return',
'super', 'switch', 'static',
'this', 'throw', 'true', 'try', 'typeof',
'var', 'void',
'yield',
'while', 'with',
],
method: [
// Array
'concat',
'every',
'filter', 'forEach',
'join',
'lastIndexOf',
'indexOf', 'isArray',
'map',
'pop', 'push',
'reduce', 'reduceRight', 'reverse',
'shift', 'slice', 'some', 'sort', 'splice',
'unshift',
// Date
'getDate', 'getDay', 'getFullYear', 'getHours',
'getMilliseconds', 'getMinutes', 'getMonth', 'getSeconds',
'getTime', 'getTimezoneOffset',
'getUTCDate', 'getUTCDay', 'getUTCFullYear', 'getUTCHours',
'getUTCMilliseconds', 'getUTCMinutes', 'getUTCMonth', 'getUTCSeconds',
'now',
'parse',
'setDate', 'setFullYear', 'setHours', 'setMilliseconds',
'setMinutes', 'setMonth', 'setSeconds', 'setTime',
'setUTCDate', 'setUTCFullYear', 'setUTCHours', 'setUTCMilliseconds',
'setUTCMinutes', 'setUTCMonth', 'setUTCSeconds',
'toDateString', 'toJSON', 'toLocaleDateString', 'toLocaleString',
'toLocaleTimeString', 'toTimeString', 'toUTCString',
'UTC',
// Function
'apply', 'bind', 'call', 'isGenerator',
// JSON
'parse', 'stringify',
// Math
'abs', 'acos', 'asin', 'atan', 'atan2',
'ceil', 'cos',
'exp',
'floor',
'log',
'max', 'min',
'pow',
'random', 'round',
'sin', 'sqrt',
'tan',
// Number
'toExponential', 'toFixed', 'toLocaleString', 'toPrecision',
// Object
'create',
'defineProperty', 'defineProperties',
'freeze',
'getOwnPropertyDescriptor', 'getOwnPropertyNames', 'getPrototypeOf',
'hasOwnProperty',
'isExtensible', 'isFrozen', 'isPrototypeOf', 'isSealed',
'keys',
'preventExtensions', 'propertyIsEnumerable',
'seal',
'toLocaleString', 'toString',
'valueOf',
// RegExp
'exec', 'test',
// String
'charAt', 'charCodeAt', 'concat',
'fromCharCode',
'indexOf',
'lastIndexOf', 'localeCompare',
'match',
'replace',
'search', 'slice', 'split', 'substr', 'substring',
'toLocaleLowerCase', 'toLocaleUpperCase', 'toLowerCase', 'toUpperCase', 'trim',
// Window
'addEventListener', 'alert', 'atob',
'blur', 'btoa',
'clearInterval', 'clearTimeout', 'close', 'confirm',
'dispatchEvent',
'escape',
'find', 'focus',
'getComputedStyle', 'getSelection',
'moveBy', 'moveTo',
'open',
'postMessage', 'print', 'prompt',
'removeEventListener', 'resizeBy', 'resizeTo',
'scroll', 'scrollBy', 'scrollTo',
'setCursor', 'setInterval', 'setTimeout', 'stop',
'unescape'
],
object: [
'Array',
'Boolean',
'Date', 'decodeURI', 'decodeURIComponent',
'encodeURI', 'encodeURIComponent', 'Error', 'eval', 'EvalError',
'Function',
'Infinity', 'isFinite', 'isNaN',
'JSON',
'Math',
'NaN', 'Number',
'Object',
'parseFloat', 'parseInt',
'RangeError', 'ReferenceError', 'RegExp',
'String', 'SyntaxError',
'TypeError',
'undefined', 'URIError',
'window'
],
property: [
// Function
'constructor', 'length', 'prototype',
// RegExp
'global', 'ignoreCase', 'lastIndex', 'multiline', 'source',
// Window
'applicationCache',
'closed', 'console', 'content', 'crypto',
'defaultStatus', 'document',
'frameElement', 'frames',
'history',
'innerHeight', 'innerWidth',
'length', 'location', 'locationbar', 'localStorage',
'menubar',
'name', 'navigator',
'opener', 'outerHeight', 'outerWidth',
'pageXOffset', 'pageYOffset', 'parent', 'personalbar',
'screen', 'screenX', 'screenY', 'scrollbars', 'scrollX', 'scrollY',
'self', 'sessionStorage', 'status', 'statusbar',
'toolbar', 'top'
]
};
return function(source) {
source = source.replace(/\r\n/g, '\n').replace(/\r/g, '\n');
var cursor = 0,
tokenize = {
comment: function() {
while (char = source[++cursor]) {
if (next == '/' && char == '\n') {
break;
} else if (next == '*' && char + source[cursor + 1] == '*/') {
cursor += 2;
break;
}
}
},
identifier: function() {
var str;
while ((identifier + number).indexOf(source[++cursor]) > -1) {}
str = source.substring(start, cursor);
Ox.forEach(word, function(value, key) {
if (value.indexOf(str) > -1) {
type = key;
return false;
}
});
},
linebreak: function() {
while (linebreak.indexOf(source[++cursor]) > -1) {}
},
number: function() {
while ((number + '.').indexOf(source[++cursor]) > -1) {}
},
operator: function() {
while (operator.indexOf(char += source[++cursor]) > -1) {}
},
regexp: function() {
while ((char = source[++cursor]) != '/') {
char == '\\' && ++cursor;
if (cursor == source.length) {
break;
}
}
while (regexp.indexOf(source[++cursor]) > -1) {}
},
string: function() {
var delimiter = char;
while ((char = source[++cursor]) != delimiter) {
char == '\\' && ++cursor;
if (cursor == source.length) {
break;
}
}
++cursor;
},
whitespace: function() {
while (whitespace.indexOf(source[++cursor]) > -1) {}
}
},
tokens = [],
type;
while (cursor < source.length) {
var char = source[cursor],
next = source[cursor + 1],
start = cursor;
if (char == '/' && (next == '/' || next == '*')) {
type = 'comment';
} else if (identifier.indexOf(char) > -1) {
type = 'identifier';
} else if (linebreak.indexOf(char) > -1) {
type = 'linebreak';
} else if (number.indexOf(char) > -1) {
type = 'number';
} else if (string.indexOf(char) > -1) {
type = 'string';
} else if (whitespace.indexOf(char) > -1) {
type = 'whitespace';
} else if (char == '/') {
type = isRegExp() ? 'regexp' : 'operator';
} else if (operator.indexOf(char) > -1) {
type = 'operator';
}
tokenize[type]();
tokens.push({
length: cursor - start,
offset: start,
type: type,
});
}
function isRegExp() {
// checks if a forward slash is the beginning of a regexp,
// as opposed to the beginning of an operator
// see http://www.mozilla.org/js/language/js20-2000-07/rationale/syntax.html#regular-expressions
var index = tokens.length,
isRegExp = false,
offset = 0,
prevToken,
prevString;
// scan back to the previous significant token,
// or the beginning of the source
while (
tokens[--index] !== void 0 && [
'comment', 'linebreak', 'whitespace'
].indexOf(tokens[index].type) > -1
) {
offset += tokens[index].length;
}
if (typeof tokens[index] == 'undefined') {
// source begins with forward slash
isRegExp = true;
} else {
prevToken = tokens[index];
prevString = source.substr(
cursor - prevToken.length - offset, prevToken.length
);
isRegExp = (
prevToken.type == 'keyword'
&& ['false', 'null', 'true'].indexOf(prevString) == -1
) || (
prevToken.type == 'operator'
&& ['++', '--', ')', ']', '}'].indexOf(prevString) == -1
);
}
return isRegExp;
}
return tokens;
};
}());