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Add json3.js, remove json2 and jslitmus from vendors.

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Former-commit-id: d801c48ec81ea2f5c5638910190da461facf98cf
This commit is contained in:
John-David Dalton
2012-10-12 01:11:58 -07:00
parent c8f871ff2a
commit bda00bf512
8 changed files with 931 additions and 1808 deletions
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649
vendor/backbone/test/vendor/jslitmus.js vendored
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@@ -1,649 +0,0 @@
// JSLitmus.js
//
// Copyright (c) 2010, Robert Kieffer, http://broofa.com
// Available under MIT license (http://en.wikipedia.org/wiki/MIT_License)
(function() {
// Private methods and state
// Get platform info but don't go crazy trying to recognize everything
// that's out there. This is just for the major platforms and OSes.
var platform = 'unknown platform', ua = navigator.userAgent;
// Detect OS
var oses = ['Windows','iPhone OS','(Intel |PPC )?Mac OS X','Linux'].join('|');
var pOS = new RegExp('((' + oses + ') [^ \);]*)').test(ua) ? RegExp.$1 : null;
if (!pOS) pOS = new RegExp('((' + oses + ')[^ \);]*)').test(ua) ? RegExp.$1 : null;
// Detect browser
var pName = /(Chrome|MSIE|Safari|Opera|Firefox)/.test(ua) ? RegExp.$1 : null;
// Detect version
var vre = new RegExp('(Version|' + pName + ')[ \/]([^ ;]*)');
var pVersion = (pName && vre.test(ua)) ? RegExp.$2 : null;
var platform = (pOS && pName && pVersion) ? pName + ' ' + pVersion + ' on ' + pOS : 'unknown platform';
/**
* A smattering of methods that are needed to implement the JSLitmus testbed.
*/
var jsl = {
/**
* Enhanced version of escape()
*/
escape: function(s) {
s = s.replace(/,/g, '\\,');
s = escape(s);
s = s.replace(/\+/g, '%2b');
s = s.replace(/ /g, '+');
return s;
},
/**
* Get an element by ID.
*/
$: function(id) {
return document.getElementById(id);
},
/**
* Null function
*/
F: function() {},
/**
* Set the status shown in the UI
*/
status: function(msg) {
var el = jsl.$('jsl_status');
if (el) el.innerHTML = msg || '';
},
/**
* Convert a number to an abbreviated string like, "15K" or "10M"
*/
toLabel: function(n) {
if (n == Infinity) {
return 'Infinity';
} else if (n > 1e9) {
n = Math.round(n/1e8);
return n/10 + 'B';
} else if (n > 1e6) {
n = Math.round(n/1e5);
return n/10 + 'M';
} else if (n > 1e3) {
n = Math.round(n/1e2);
return n/10 + 'K';
}
return n;
},
/**
* Copy properties from src to dst
*/
extend: function(dst, src) {
for (var k in src) dst[k] = src[k]; return dst;
},
/**
* Like Array.join(), but for the key-value pairs in an object
*/
join: function(o, delimit1, delimit2) {
if (o.join) return o.join(delimit1); // If it's an array
var pairs = [];
for (var k in o) pairs.push(k + delimit1 + o[k]);
return pairs.join(delimit2);
},
/**
* Array#indexOf isn't supported in IE, so we use this as a cross-browser solution
*/
indexOf: function(arr, o) {
if (arr.indexOf) return arr.indexOf(o);
for (var i = 0; i < this.length; i++) if (arr[i] === o) return i;
return -1;
}
};
/**
* Test manages a single test (created with
* JSLitmus.test())
*
* @private
*/
var Test = function (name, f) {
if (!f) throw new Error('Undefined test function');
if (!/function[^\(]*\(([^,\)]*)/.test(f.toString())) {
throw new Error('"' + name + '" test: Test is not a valid Function object');
}
this.loopArg = RegExp.$1;
this.name = name;
this.f = f;
};
jsl.extend(Test, /** @lends Test */ {
/** Calibration tests for establishing iteration loop overhead */
CALIBRATIONS: [
new Test('calibrating loop', function(count) {while (count--);}),
new Test('calibrating function', jsl.F)
],
/**
* Run calibration tests. Returns true if calibrations are not yet
* complete (in which case calling code should run the tests yet again).
* onCalibrated - Callback to invoke when calibrations have finished
*/
calibrate: function(onCalibrated) {
for (var i = 0; i < Test.CALIBRATIONS.length; i++) {
var cal = Test.CALIBRATIONS[i];
if (cal.running) return true;
if (!cal.count) {
cal.isCalibration = true;
cal.onStop = onCalibrated;
//cal.MIN_TIME = .1; // Do calibrations quickly
cal.run(2e4);
return true;
}
}
return false;
}
});
jsl.extend(Test.prototype, {/** @lends Test.prototype */
/** Initial number of iterations */
INIT_COUNT: 10,
/** Max iterations allowed (i.e. used to detect bad looping functions) */
MAX_COUNT: 1e9,
/** Minimum time a test should take to get valid results (secs) */
MIN_TIME: .5,
/** Callback invoked when test state changes */
onChange: jsl.F,
/** Callback invoked when test is finished */
onStop: jsl.F,
/**
* Reset test state
*/
reset: function() {
delete this.count;
delete this.time;
delete this.running;
delete this.error;
},
/**
* Run the test (in a timeout). We use a timeout to make sure the browser
* has a chance to finish rendering any UI changes we've made, like
* updating the status message.
*/
run: function(count) {
count = count || this.INIT_COUNT;
jsl.status(this.name + ' x ' + count);
this.running = true;
var me = this;
setTimeout(function() {me._run(count);}, 200);
},
/**
* The nuts and bolts code that actually runs a test
*/
_run: function(count) {
var me = this;
// Make sure calibration tests have run
if (!me.isCalibration && Test.calibrate(function() {me.run(count);})) return;
this.error = null;
try {
var start, f = this.f, now, i = count;
// Start the timer
start = new Date();
// Now for the money shot. If this is a looping function ...
if (this.loopArg) {
// ... let it do the iteration itself
f(count);
} else {
// ... otherwise do the iteration for it
while (i--) f();
}
// Get time test took (in secs)
this.time = Math.max(1,new Date() - start)/1000;
// Store iteration count and per-operation time taken
this.count = count;
this.period = this.time/count;
// Do we need to do another run?
this.running = this.time <= this.MIN_TIME;
// ... if so, compute how many times we should iterate
if (this.running) {
// Bump the count to the nearest power of 2
var x = this.MIN_TIME/this.time;
var pow = Math.pow(2, Math.max(1, Math.ceil(Math.log(x)/Math.log(2))));
count *= pow;
if (count > this.MAX_COUNT) {
throw new Error('Max count exceeded. If this test uses a looping function, make sure the iteration loop is working properly.');
}
}
} catch (e) {
// Exceptions are caught and displayed in the test UI
this.reset();
this.error = e;
}
// Figure out what to do next
if (this.running) {
me.run(count);
} else {
jsl.status('');
me.onStop(me);
}
// Finish up
this.onChange(this);
},
/**
* Get the number of operations per second for this test.
*
* @param normalize if true, iteration loop overhead taken into account
*/
getHz: function(/**Boolean*/ normalize) {
var p = this.period;
// Adjust period based on the calibration test time
if (normalize && !this.isCalibration) {
var cal = Test.CALIBRATIONS[this.loopArg ? 0 : 1];
// If the period is within 20% of the calibration time, then zero the
// it out
p = p < cal.period*1.2 ? 0 : p - cal.period;
}
return Math.round(1/p);
},
/**
* Get a friendly string describing the test
*/
toString: function() {
return this.name + ' - ' + this.time/this.count + ' secs';
}
});
// CSS we need for the UI
var STYLESHEET = '<style> \
#jslitmus {font-family:sans-serif; font-size: 12px;} \
#jslitmus a {text-decoration: none;} \
#jslitmus a:hover {text-decoration: underline;} \
#jsl_status { \
margin-top: 10px; \
font-size: 10px; \
color: #888; \
} \
A IMG {border:none} \
#test_results { \
margin-top: 10px; \
font-size: 12px; \
font-family: sans-serif; \
border-collapse: collapse; \
border-spacing: 0px; \
} \
#test_results th, #test_results td { \
border: solid 1px #ccc; \
vertical-align: top; \
padding: 3px; \
} \
#test_results th { \
vertical-align: bottom; \
background-color: #ccc; \
padding: 1px; \
font-size: 10px; \
} \
#test_results #test_platform { \
color: #444; \
text-align:center; \
} \
#test_results .test_row { \
color: #006; \
cursor: pointer; \
} \
#test_results .test_nonlooping { \
border-left-style: dotted; \
border-left-width: 2px; \
} \
#test_results .test_looping { \
border-left-style: solid; \
border-left-width: 2px; \
} \
#test_results .test_name {white-space: nowrap;} \
#test_results .test_pending { \
} \
#test_results .test_running { \
font-style: italic; \
} \
#test_results .test_done {} \
#test_results .test_done { \
text-align: right; \
font-family: monospace; \
} \
#test_results .test_error {color: #600;} \
#test_results .test_error .error_head {font-weight:bold;} \
#test_results .test_error .error_body {font-size:85%;} \
#test_results .test_row:hover td { \
background-color: #ffc; \
text-decoration: underline; \
} \
#chart { \
margin: 10px 0px; \
width: 250px; \
} \
#chart img { \
border: solid 1px #ccc; \
margin-bottom: 5px; \
} \
#chart #tiny_url { \
height: 40px; \
width: 250px; \
} \
#jslitmus_credit { \
font-size: 10px; \
color: #888; \
margin-top: 8px; \
} \
</style>';
// HTML markup for the UI
var MARKUP = '<div id="jslitmus"> \
<button onclick="JSLitmus.runAll(event)">Run Tests</button> \
<button id="stop_button" disabled="disabled" onclick="JSLitmus.stop()">Stop Tests</button> \
<br \> \
<br \> \
<input type="checkbox" style="vertical-align: middle" id="test_normalize" checked="checked" onchange="JSLitmus.renderAll()""> Normalize results \
<table id="test_results"> \
<colgroup> \
<col /> \
<col width="100" /> \
</colgroup> \
<tr><th id="test_platform" colspan="2">' + platform + '</th></tr> \
<tr><th>Test</th><th>Ops/sec</th></tr> \
<tr id="test_row_template" class="test_row" style="display:none"> \
<td class="test_name"></td> \
<td class="test_result">Ready</td> \
</tr> \
</table> \
<div id="jsl_status"></div> \
<div id="chart" style="display:none"> \
<a id="chart_link" target="_blank"><img id="chart_image"></a> \
TinyURL (for chart): \
<iframe id="tiny_url" frameBorder="0" scrolling="no" src=""></iframe> \
</div> \
<a id="jslitmus_credit" title="JSLitmus home page" href="http://code.google.com/p/jslitmus" target="_blank">Powered by JSLitmus</a> \
</div>';
/**
* The public API for creating and running tests
*/
window.JSLitmus = {
/** The list of all tests that have been registered with JSLitmus.test */
_tests: [],
/** The queue of tests that need to be run */
_queue: [],
/**
* The parsed query parameters the current page URL. This is provided as a
* convenience for test functions - it's not used by JSLitmus proper
*/
params: {},
/**
* Initialize
*/
_init: function() {
// Parse query params into JSLitmus.params[] hash
var match = (location + '').match(/([^?#]*)(#.*)?$/);
if (match) {
var pairs = match[1].split('&');
for (var i = 0; i < pairs.length; i++) {
var pair = pairs[i].split('=');
if (pair.length > 1) {
var key = pair.shift();
var value = pair.length > 1 ? pair.join('=') : pair[0];
this.params[key] = value;
}
}
}
// Write out the stylesheet. We have to do this here because IE
// doesn't honor sheets written after the document has loaded.
document.write(STYLESHEET);
// Setup the rest of the UI once the document is loaded
if (window.addEventListener) {
window.addEventListener('load', this._setup, false);
} else if (document.addEventListener) {
document.addEventListener('load', this._setup, false);
} else if (window.attachEvent) {
window.attachEvent('onload', this._setup);
}
return this;
},
/**
* Set up the UI
*/
_setup: function() {
var el = jsl.$('jslitmus_container');
if (!el) document.body.appendChild(el = document.createElement('div'));
el.innerHTML = MARKUP;
// Render the UI for all our tests
for (var i=0; i < JSLitmus._tests.length; i++)
JSLitmus.renderTest(JSLitmus._tests[i]);
},
/**
* (Re)render all the test results
*/
renderAll: function() {
for (var i = 0; i < JSLitmus._tests.length; i++)
JSLitmus.renderTest(JSLitmus._tests[i]);
JSLitmus.renderChart();
},
/**
* (Re)render the chart graphics
*/
renderChart: function() {
var url = JSLitmus.chartUrl();
jsl.$('chart_link').href = url;
jsl.$('chart_image').src = url;
jsl.$('chart').style.display = '';
// Update the tiny URL
jsl.$('tiny_url').src = 'http://tinyurl.com/api-create.php?url='+escape(url);
},
/**
* (Re)render the results for a specific test
*/
renderTest: function(test) {
// Make a new row if needed
if (!test._row) {
var trow = jsl.$('test_row_template');
if (!trow) return;
test._row = trow.cloneNode(true);
test._row.style.display = '';
test._row.id = '';
test._row.onclick = function() {JSLitmus._queueTest(test);};
test._row.title = 'Run ' + test.name + ' test';
trow.parentNode.appendChild(test._row);
test._row.cells[0].innerHTML = test.name;
}
var cell = test._row.cells[1];
var cns = [test.loopArg ? 'test_looping' : 'test_nonlooping'];
if (test.error) {
cns.push('test_error');
cell.innerHTML =
'<div class="error_head">' + test.error + '</div>' +
'<ul class="error_body"><li>' +
jsl.join(test.error, ': ', '</li><li>') +
'</li></ul>';
} else {
if (test.running) {
cns.push('test_running');
cell.innerHTML = 'running';
} else if (jsl.indexOf(JSLitmus._queue, test) >= 0) {
cns.push('test_pending');
cell.innerHTML = 'pending';
} else if (test.count) {
cns.push('test_done');
var hz = test.getHz(jsl.$('test_normalize').checked);
cell.innerHTML = hz != Infinity ? hz : '&infin;';
cell.title = 'Looped ' + test.count + ' times in ' + test.time + ' seconds';
} else {
cell.innerHTML = 'ready';
}
}
cell.className = cns.join(' ');
},
/**
* Create a new test
*/
test: function(name, f) {
// Create the Test object
var test = new Test(name, f);
JSLitmus._tests.push(test);
// Re-render if the test state changes
test.onChange = JSLitmus.renderTest;
// Run the next test if this one finished
test.onStop = function(test) {
if (JSLitmus.onTestFinish) JSLitmus.onTestFinish(test);
JSLitmus.currentTest = null;
JSLitmus._nextTest();
};
// Render the new test
this.renderTest(test);
},
/**
* Add all tests to the run queue
*/
runAll: function(e) {
e = e || window.event;
var reverse = e && e.shiftKey, len = JSLitmus._tests.length;
for (var i = 0; i < len; i++) {
JSLitmus._queueTest(JSLitmus._tests[!reverse ? i : (len - i - 1)]);
}
},
/**
* Remove all tests from the run queue. The current test has to finish on
* it's own though
*/
stop: function() {
while (JSLitmus._queue.length) {
var test = JSLitmus._queue.shift();
JSLitmus.renderTest(test);
}
},
/**
* Run the next test in the run queue
*/
_nextTest: function() {
if (!JSLitmus.currentTest) {
var test = JSLitmus._queue.shift();
if (test) {
jsl.$('stop_button').disabled = false;
JSLitmus.currentTest = test;
test.run();
JSLitmus.renderTest(test);
if (JSLitmus.onTestStart) JSLitmus.onTestStart(test);
} else {
jsl.$('stop_button').disabled = true;
JSLitmus.renderChart();
}
}
},
/**
* Add a test to the run queue
*/
_queueTest: function(test) {
if (jsl.indexOf(JSLitmus._queue, test) >= 0) return;
JSLitmus._queue.push(test);
JSLitmus.renderTest(test);
JSLitmus._nextTest();
},
/**
* Generate a Google Chart URL that shows the data for all tests
*/
chartUrl: function() {
var n = JSLitmus._tests.length, markers = [], data = [];
var d, min = 0, max = -1e10;
var normalize = jsl.$('test_normalize').checked;
// Gather test data
for (var i=0; i < JSLitmus._tests.length; i++) {
var test = JSLitmus._tests[i];
if (test.count) {
var hz = test.getHz(normalize);
var v = hz != Infinity ? hz : 0;
data.push(v);
markers.push('t' + jsl.escape(test.name + '(' + jsl.toLabel(hz)+ ')') + ',000000,0,' +
markers.length + ',10');
max = Math.max(v, max);
}
}
if (markers.length <= 0) return null;
// Build chart title
var title = document.getElementsByTagName('title');
title = (title && title.length) ? title[0].innerHTML : null;
var chart_title = [];
if (title) chart_title.push(title);
chart_title.push('Ops/sec (' + platform + ')');
// Build labels
var labels = [jsl.toLabel(min), jsl.toLabel(max)];
var w = 250, bw = 15;
var bs = 5;
var h = markers.length*(bw + bs) + 30 + chart_title.length*20;
var params = {
chtt: escape(chart_title.join('|')),
chts: '000000,10',
cht: 'bhg', // chart type
chd: 't:' + data.join(','), // data set
chds: min + ',' + max, // max/min of data
chxt: 'x', // label axes
chxl: '0:|' + labels.join('|'), // labels
chsp: '0,1',
chm: markers.join('|'), // test names
chbh: [bw, 0, bs].join(','), // bar widths
// chf: 'bg,lg,0,eeeeee,0,eeeeee,.5,ffffff,1', // gradient
chs: w + 'x' + h
};
return 'http://chart.apis.google.com/chart?' + jsl.join(params, '=', '&');
}
};
JSLitmus._init();
})();

481
vendor/backbone/test/vendor/json2.js vendored
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@@ -1,481 +0,0 @@
/*
http://www.JSON.org/json2.js
2009-09-29
Public Domain.
NO WARRANTY EXPRESSED OR IMPLIED. USE AT YOUR OWN RISK.
See http://www.JSON.org/js.html
This code should be minified before deployment.
See http://javascript.crockford.com/jsmin.html
USE YOUR OWN COPY. IT IS EXTREMELY UNWISE TO LOAD CODE FROM SERVERS YOU DO
NOT CONTROL.
This file creates a global JSON object containing two methods: stringify
and parse.
JSON.stringify(value, replacer, space)
value any JavaScript value, usually an object or array.
replacer an optional parameter that determines how object
values are stringified for objects. It can be a
function or an array of strings.
space an optional parameter that specifies the indentation
of nested structures. If it is omitted, the text will
be packed without extra whitespace. If it is a number,
it will specify the number of spaces to indent at each
level. If it is a string (such as '\t' or '&nbsp;'),
it contains the characters used to indent at each level.
This method produces a JSON text from a JavaScript value.
When an object value is found, if the object contains a toJSON
method, its toJSON method will be called and the result will be
stringified. A toJSON method does not serialize: it returns the
value represented by the name/value pair that should be serialized,
or undefined if nothing should be serialized. The toJSON method
will be passed the key associated with the value, and this will be
bound to the value
For example, this would serialize Dates as ISO strings.
Date.prototype.toJSON = function (key) {
function f(n) {
// Format integers to have at least two digits.
return n < 10 ? '0' + n : n;
}
return this.getUTCFullYear() + '-' +
f(this.getUTCMonth() + 1) + '-' +
f(this.getUTCDate()) + 'T' +
f(this.getUTCHours()) + ':' +
f(this.getUTCMinutes()) + ':' +
f(this.getUTCSeconds()) + 'Z';
};
You can provide an optional replacer method. It will be passed the
key and value of each member, with this bound to the containing
object. The value that is returned from your method will be
serialized. If your method returns undefined, then the member will
be excluded from the serialization.
If the replacer parameter is an array of strings, then it will be
used to select the members to be serialized. It filters the results
such that only members with keys listed in the replacer array are
stringified.
Values that do not have JSON representations, such as undefined or
functions, will not be serialized. Such values in objects will be
dropped; in arrays they will be replaced with null. You can use
a replacer function to replace those with JSON values.
JSON.stringify(undefined) returns undefined.
The optional space parameter produces a stringification of the
value that is filled with line breaks and indentation to make it
easier to read.
If the space parameter is a non-empty string, then that string will
be used for indentation. If the space parameter is a number, then
the indentation will be that many spaces.
Example:
text = JSON.stringify(['e', {pluribus: 'unum'}]);
// text is '["e",{"pluribus":"unum"}]'
text = JSON.stringify(['e', {pluribus: 'unum'}], null, '\t');
// text is '[\n\t"e",\n\t{\n\t\t"pluribus": "unum"\n\t}\n]'
text = JSON.stringify([new Date()], function (key, value) {
return this[key] instanceof Date ?
'Date(' + this[key] + ')' : value;
});
// text is '["Date(---current time---)"]'
JSON.parse(text, reviver)
This method parses a JSON text to produce an object or array.
It can throw a SyntaxError exception.
The optional reviver parameter is a function that can filter and
transform the results. It receives each of the keys and values,
and its return value is used instead of the original value.
If it returns what it received, then the structure is not modified.
If it returns undefined then the member is deleted.
Example:
// Parse the text. Values that look like ISO date strings will
// be converted to Date objects.
myData = JSON.parse(text, function (key, value) {
var a;
if (typeof value === 'string') {
a =
/^(\d{4})-(\d{2})-(\d{2})T(\d{2}):(\d{2}):(\d{2}(?:\.\d*)?)Z$/.exec(value);
if (a) {
return new Date(Date.UTC(+a[1], +a[2] - 1, +a[3], +a[4],
+a[5], +a[6]));
}
}
return value;
});
myData = JSON.parse('["Date(09/09/2001)"]', function (key, value) {
var d;
if (typeof value === 'string' &&
value.slice(0, 5) === 'Date(' &&
value.slice(-1) === ')') {
d = new Date(value.slice(5, -1));
if (d) {
return d;
}
}
return value;
});
This is a reference implementation. You are free to copy, modify, or
redistribute.
*/
/*jslint evil: true, strict: false */
/*members "", "\b", "\t", "\n", "\f", "\r", "\"", JSON, "\\", apply,
call, charCodeAt, getUTCDate, getUTCFullYear, getUTCHours,
getUTCMinutes, getUTCMonth, getUTCSeconds, hasOwnProperty, join,
lastIndex, length, parse, prototype, push, replace, slice, stringify,
test, toJSON, toString, valueOf
*/
// Create a JSON object only if one does not already exist. We create the
// methods in a closure to avoid creating global variables.
if (!this.JSON) {
this.JSON = {};
}
(function () {
function f(n) {
// Format integers to have at least two digits.
return n < 10 ? '0' + n : n;
}
if (typeof Date.prototype.toJSON !== 'function') {
Date.prototype.toJSON = function (key) {
return isFinite(this.valueOf()) ?
this.getUTCFullYear() + '-' +
f(this.getUTCMonth() + 1) + '-' +
f(this.getUTCDate()) + 'T' +
f(this.getUTCHours()) + ':' +
f(this.getUTCMinutes()) + ':' +
f(this.getUTCSeconds()) + 'Z' : null;
};
String.prototype.toJSON =
Number.prototype.toJSON =
Boolean.prototype.toJSON = function (key) {
return this.valueOf();
};
}
var cx = /[\u0000\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/g,
escapable = /[\\\"\x00-\x1f\x7f-\x9f\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/g,
gap,
indent,
meta = { // table of character substitutions
'\b': '\\b',
'\t': '\\t',
'\n': '\\n',
'\f': '\\f',
'\r': '\\r',
'"' : '\\"',
'\\': '\\\\'
},
rep;
function quote(string) {
// If the string contains no control characters, no quote characters, and no
// backslash characters, then we can safely slap some quotes around it.
// Otherwise we must also replace the offending characters with safe escape
// sequences.
escapable.lastIndex = 0;
return escapable.test(string) ?
'"' + string.replace(escapable, function (a) {
var c = meta[a];
return typeof c === 'string' ? c :
'\\u' + ('0000' + a.charCodeAt(0).toString(16)).slice(-4);
}) + '"' :
'"' + string + '"';
}
function str(key, holder) {
// Produce a string from holder[key].
var i, // The loop counter.
k, // The member key.
v, // The member value.
length,
mind = gap,
partial,
value = holder[key];
// If the value has a toJSON method, call it to obtain a replacement value.
if (value && typeof value === 'object' &&
typeof value.toJSON === 'function') {
value = value.toJSON(key);
}
// If we were called with a replacer function, then call the replacer to
// obtain a replacement value.
if (typeof rep === 'function') {
value = rep.call(holder, key, value);
}
// What happens next depends on the value's type.
switch (typeof value) {
case 'string':
return quote(value);
case 'number':
// JSON numbers must be finite. Encode non-finite numbers as null.
return isFinite(value) ? String(value) : 'null';
case 'boolean':
case 'null':
// If the value is a boolean or null, convert it to a string. Note:
// typeof null does not produce 'null'. The case is included here in
// the remote chance that this gets fixed someday.
return String(value);
// If the type is 'object', we might be dealing with an object or an array or
// null.
case 'object':
// Due to a specification blunder in ECMAScript, typeof null is 'object',
// so watch out for that case.
if (!value) {
return 'null';
}
// Make an array to hold the partial results of stringifying this object value.
gap += indent;
partial = [];
// Is the value an array?
if (Object.prototype.toString.apply(value) === '[object Array]') {
// The value is an array. Stringify every element. Use null as a placeholder
// for non-JSON values.
length = value.length;
for (i = 0; i < length; i += 1) {
partial[i] = str(i, value) || 'null';
}
// Join all of the elements together, separated with commas, and wrap them in
// brackets.
v = partial.length === 0 ? '[]' :
gap ? '[\n' + gap +
partial.join(',\n' + gap) + '\n' +
mind + ']' :
'[' + partial.join(',') + ']';
gap = mind;
return v;
}
// If the replacer is an array, use it to select the members to be stringified.
if (rep && typeof rep === 'object') {
length = rep.length;
for (i = 0; i < length; i += 1) {
k = rep[i];
if (typeof k === 'string') {
v = str(k, value);
if (v) {
partial.push(quote(k) + (gap ? ': ' : ':') + v);
}
}
}
} else {
// Otherwise, iterate through all of the keys in the object.
for (k in value) {
if (Object.hasOwnProperty.call(value, k)) {
v = str(k, value);
if (v) {
partial.push(quote(k) + (gap ? ': ' : ':') + v);
}
}
}
}
// Join all of the member texts together, separated with commas,
// and wrap them in braces.
v = partial.length === 0 ? '{}' :
gap ? '{\n' + gap + partial.join(',\n' + gap) + '\n' +
mind + '}' : '{' + partial.join(',') + '}';
gap = mind;
return v;
}
}
// If the JSON object does not yet have a stringify method, give it one.
if (typeof JSON.stringify !== 'function') {
JSON.stringify = function (value, replacer, space) {
// The stringify method takes a value and an optional replacer, and an optional
// space parameter, and returns a JSON text. The replacer can be a function
// that can replace values, or an array of strings that will select the keys.
// A default replacer method can be provided. Use of the space parameter can
// produce text that is more easily readable.
var i;
gap = '';
indent = '';
// If the space parameter is a number, make an indent string containing that
// many spaces.
if (typeof space === 'number') {
for (i = 0; i < space; i += 1) {
indent += ' ';
}
// If the space parameter is a string, it will be used as the indent string.
} else if (typeof space === 'string') {
indent = space;
}
// If there is a replacer, it must be a function or an array.
// Otherwise, throw an error.
rep = replacer;
if (replacer && typeof replacer !== 'function' &&
(typeof replacer !== 'object' ||
typeof replacer.length !== 'number')) {
throw new Error('JSON.stringify');
}
// Make a fake root object containing our value under the key of ''.
// Return the result of stringifying the value.
return str('', {'': value});
};
}
// If the JSON object does not yet have a parse method, give it one.
if (typeof JSON.parse !== 'function') {
JSON.parse = function (text, reviver) {
// The parse method takes a text and an optional reviver function, and returns
// a JavaScript value if the text is a valid JSON text.
var j;
function walk(holder, key) {
// The walk method is used to recursively walk the resulting structure so
// that modifications can be made.
var k, v, value = holder[key];
if (value && typeof value === 'object') {
for (k in value) {
if (Object.hasOwnProperty.call(value, k)) {
v = walk(value, k);
if (v !== undefined) {
value[k] = v;
} else {
delete value[k];
}
}
}
}
return reviver.call(holder, key, value);
}
// Parsing happens in four stages. In the first stage, we replace certain
// Unicode characters with escape sequences. JavaScript handles many characters
// incorrectly, either silently deleting them, or treating them as line endings.
cx.lastIndex = 0;
if (cx.test(text)) {
text = text.replace(cx, function (a) {
return '\\u' +
('0000' + a.charCodeAt(0).toString(16)).slice(-4);
});
}
// In the second stage, we run the text against regular expressions that look
// for non-JSON patterns. We are especially concerned with '()' and 'new'
// because they can cause invocation, and '=' because it can cause mutation.
// But just to be safe, we want to reject all unexpected forms.
// We split the second stage into 4 regexp operations in order to work around
// crippling inefficiencies in IE's and Safari's regexp engines. First we
// replace the JSON backslash pairs with '@' (a non-JSON character). Second, we
// replace all simple value tokens with ']' characters. Third, we delete all
// open brackets that follow a colon or comma or that begin the text. Finally,
// we look to see that the remaining characters are only whitespace or ']' or
// ',' or ':' or '{' or '}'. If that is so, then the text is safe for eval.
if (/^[\],:{}\s]*$/.
test(text.replace(/\\(?:["\\\/bfnrt]|u[0-9a-fA-F]{4})/g, '@').
replace(/"[^"\\\n\r]*"|true|false|null|-?\d+(?:\.\d*)?(?:[eE][+\-]?\d+)?/g, ']').
replace(/(?:^|:|,)(?:\s*\[)+/g, ''))) {
// In the third stage we use the eval function to compile the text into a
// JavaScript structure. The '{' operator is subject to a syntactic ambiguity
// in JavaScript: it can begin a block or an object literal. We wrap the text
// in parens to eliminate the ambiguity.
j = eval('(' + text + ')');
// In the optional fourth stage, we recursively walk the new structure, passing
// each name/value pair to a reviver function for possible transformation.
return typeof reviver === 'function' ?
walk({'': j}, '') : j;
}
// If the text is not JSON parseable, then a SyntaxError is thrown.
throw new SyntaxError('JSON.parse');
};
}
}());