[Pkg-javascript-commits] [json-js] 03/85: Imported Upstream version 0~20101208
Jonas Smedegaard
dr at jones.dk
Mon Mar 14 10:39:13 UTC 2016
This is an automated email from the git hooks/post-receive script.
js pushed a commit to branch master
in repository json-js.
commit 6a510599594ba39f9655c0bcc47d985ceef85dbe
Author: Jonas Smedegaard <dr at jones.dk>
Date: Sun Jan 16 20:35:57 2011 +0100
Imported Upstream version 0~20101208
---
README | 42 +++++
cycle.js | 158 ++++++++++++++++
json.js | 534 ++++++++++++++++++++++++++++++++++++++++++++++++++++
json2.js | 483 +++++++++++++++++++++++++++++++++++++++++++++++
json_parse.js | 345 +++++++++++++++++++++++++++++++++
json_parse_state.js | 396 ++++++++++++++++++++++++++++++++++++++
6 files changed, 1958 insertions(+)
diff --git a/README b/README
new file mode 100755
index 0000000..be9b9cb
--- /dev/null
+++ b/README
@@ -0,0 +1,42 @@
+JSON in JavaScript
+
+
+Douglas Crockford
+douglas at crockford.com
+
+2010-11-18
+
+
+JSON is a light-weight, language independent, data interchange format.
+See http://www.JSON.org/
+
+The files in this collection implement JSON encoders/decoders in JavaScript.
+
+JSON became a built-in feature of JavaScript when the ECMAScript Programming
+Language Standard - Fifth Edition was adopted by the ECMA General Assembly
+in December 2009. Most of the files in this collection are for applications
+that are expected to run in obsolete web browsers. For most purposes, json2.js
+is the best choice.
+
+
+json2.js: This file creates a JSON property in the global object, if there
+isn't already one, setting its value to an object containing a stringify
+method and a parse method. The parse method uses the eval method to do the
+parsing, guarding it with several regular expressions to defend against
+accidental code execution hazards. On current browsers, this file does nothing,
+prefering the built-in JSON object.
+
+json.js: This file does everything that json2.js does. It also adds a
+toJSONString method and a parseJSON method to Object.prototype. Use of this
+file is not recommended.
+
+json_parse.js: This file contains an alternative JSON parse function that
+uses recursive descent instead of eval.
+
+json_parse_state: This files contains an alternative JSON parse function that
+uses a state machine instead of eval.
+
+cycle.js: This file contains two functions, JSON.decycle and JSON.retrocycle,
+which make it possible to encode cyclical structures and dags in JSON, and to
+then recover them. JSONPath is used to represent the links.
+http://GOESSNER.net/articles/JsonPath/
\ No newline at end of file
diff --git a/cycle.js b/cycle.js
new file mode 100755
index 0000000..a6e0fa5
--- /dev/null
+++ b/cycle.js
@@ -0,0 +1,158 @@
+// cycle.js
+// 2010-11-18
+
+/*jslint forin: true, evil: true */
+
+/*members $ref, apply, call, decycle, hasOwnProperty, length, prototype, push,
+ retrocycle, stringify, test, toString
+*/
+
+if (typeof JSON.decycle !== 'function') {
+ JSON.decycle = function decycle(object) {
+
+// Make a deep copy of an object or array, assuring that there is at most
+// one instance of each object or array in the resulting structure. The
+// duplicate references (which might be forming cycles) are replaced with
+// an object of the form
+// {$ref: PATH}
+// where the PATH is a JSONPath string that locates the first occurance.
+// So,
+// var a = [];
+// a[0] = a;
+// return JSON.stringify(JSON.decycle(a));
+// produces the string '[{"$ref":"$"}]'.
+
+// JSONPath is used to locate the unique object. $ indicates the top level of
+// the object or array. [NUMBER] or [STRING] indicates a child member or
+// property.
+
+ var objects = [], // Keep a reference to each unique object or array
+ paths = []; // Keep the path to each unique object or array
+
+ return (function derez(value, path) {
+
+// The derez recurses through the object, producing the deep copy.
+
+ var i, // The loop counter
+ name, // Property name
+ nu; // The new object or array
+
+ switch (typeof value) {
+ case 'object':
+
+// typeof null === 'object', so get out if this value is not really an object.
+
+ if (!value) {
+ return null;
+ }
+
+// If the value is an object or array, look to see if we have already
+// encountered it. If so, return a $ref/path object. This is a hard way,
+// linear search that will get slower as the number of unique objects grows.
+
+ for (i = 0; i < objects.length; i += 1) {
+ if (objects[i] === value) {
+ return {$ref: paths[i]};
+ }
+ }
+
+// Otherwise, accumulate the unique value and its path.
+
+ objects.push(value);
+ paths.push(path);
+
+// If it is an array, replicate the array.
+
+ if (Object.prototype.toString.apply(value) === '[object Array]') {
+ nu = [];
+ for (i = 0; i < value.length; i += 1) {
+ nu[i] = derez(value[i], path + '[' + i + ']');
+ }
+ } else {
+
+// If it is an object, replicate the object.
+
+ nu = {};
+ for (name in value) {
+ if (Object.hasOwnProperty.call(value, name)) {
+ nu[name] = derez(value[name],
+ path + '[' + JSON.stringify(name) + ']');
+ }
+ }
+ }
+ return nu;
+ case 'number':
+ case 'string':
+ case 'boolean':
+ return value;
+ }
+ }(object, '$'));
+ };
+}
+
+
+if (typeof JSON.retrocycle !== 'function') {
+ JSON.retrocycle = function retrocycle($) {
+
+// Restore an object that was reduced by decycle. Members whose values are
+// objects of the form
+// {$ref: PATH}
+// are replaced with references to the value found by the PATH. This will
+// restore cycles. The object will be mutated.
+
+// The eval function is used to locate the values described by a PATH. The
+// root object is kept in a $ variable. A regular expression is used to
+// assure that the PATH is extremely well formed. The regexp contains nested
+// * quantifiers. That has been known to have extremely bad performance
+// problems on some browsers for very long strings. A PATH is expected to be
+// reasonably short. A PATH is allowed to belong to a very restricted subset of
+// Goessner's JSONPath.
+
+// So,
+// var s = '[{"$ref":"$"}]';
+// return JSON.retrocycle(JSON.parse(s));
+// produces an array containing a single element which is the array itself.
+
+ var px =
+/^\$(?:\[(?:\d?|\"(?:[^\\\"\u0000-\u001f]|\\([\\\"\/bfnrt]|u[0-9a-zA-Z]{4}))*\")\])*$/;
+
+ (function rez(value) {
+
+// The rez function walks recursively through the object looking for $ref
+// properties. When it finds one that has a value that is a path, then it
+// replaces the $ref object with a reference to the value that is found by
+// the path.
+
+ var i, item, name, path;
+
+ if (value && typeof value === 'object') {
+ if (Object.prototype.toString.apply(value) === '[object Array]') {
+ for (i = 0; i < value.length; i += 1) {
+ item = value[i];
+ if (item && typeof item === 'object') {
+ path = item.$ref;
+ if (typeof path === 'string' && px.test(path)) {
+ value[i] = eval(path);
+ } else {
+ rez(item);
+ }
+ }
+ }
+ } else {
+ for (name in value) {
+ item = value[name];
+ if (item && typeof item === 'object') {
+ path = item.$ref;
+ if (typeof path === 'string' && px.test(path)) {
+ value[name] = eval(path);
+ } else {
+ rez(item);
+ }
+ }
+ }
+ }
+ }
+ }($));
+ return $;
+ };
+}
diff --git a/json.js b/json.js
new file mode 100755
index 0000000..ea2377f
--- /dev/null
+++ b/json.js
@@ -0,0 +1,534 @@
+/*
+ json.js
+ 2010-12-08
+
+ Public Domain
+
+ No warranty expressed or implied. Use at your own risk.
+
+ This file has been superceded by http://www.JSON.org/json2.js
+
+ 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 adds these methods to JavaScript:
+
+ object.toJSONString(whitelist)
+ This method produce a JSON text from a JavaScript value.
+ It must not contain any cyclical references. Illegal values
+ will be excluded.
+
+ The default conversion for dates is to an ISO string. You can
+ add a toJSONString method to any date object to get a different
+ representation.
+
+ The object and array methods can take an optional whitelist
+ argument. A whitelist is an array of strings. If it is provided,
+ keys in objects not found in the whitelist are excluded.
+
+ string.parseJSON(filter)
+ This method parses a JSON text to produce an object or
+ array. It can throw a SyntaxError exception.
+
+ The optional filter parameter is a function which 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 structure is not modified. If it
+ returns undefined then the member is deleted.
+
+ Example:
+
+ // Parse the text. If a key contains the string 'date' then
+ // convert the value to a date.
+
+ myData = text.parseJSON(function (key, value) {
+ return key.indexOf('date') >= 0 ? new Date(value) : value;
+ });
+
+ This file will break programs with improper for..in loops. See
+ http://yuiblog.com/blog/2006/09/26/for-in-intrigue/
+
+ 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 ' '),
+ 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 object holding the key.
+
+ 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, regexp: false */
+
+/*members "", "\b", "\t", "\n", "\f", "\r", "\"", JSON, "\\", apply,
+ call, charCodeAt, getUTCDate, getUTCFullYear, getUTCHours,
+ getUTCMinutes, getUTCMonth, getUTCSeconds, hasOwnProperty, join,
+ lastIndex, length, parse, parseJSON, prototype, push, replace, slice,
+ stringify, test, toJSON, toJSONString, 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 () {
+ "use strict";
+
+ 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.
+
+ text = String(text);
+ 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');
+ };
+ }
+}());
+
+
+// Augment the basic prototypes if they have not already been augmented.
+// These forms are obsolete. It is recommended that JSON.stringify and
+// JSON.parse be used instead.
+
+if (!Object.prototype.toJSONString) {
+ Object.prototype.toJSONString = function (filter) {
+ return JSON.stringify(this, filter);
+ };
+ Object.prototype.parseJSON = function (filter) {
+ return JSON.parse(this, filter);
+ };
+}
diff --git a/json2.js b/json2.js
new file mode 100755
index 0000000..22b44d9
--- /dev/null
+++ b/json2.js
@@ -0,0 +1,483 @@
+/*
+ http://www.JSON.org/json2.js
+ 2010-11-17
+
+ 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 ' '),
+ 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, regexp: 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 () {
+ "use strict";
+
+ 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.
+
+ text = String(text);
+ 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');
+ };
+ }
+}());
diff --git a/json_parse.js b/json_parse.js
new file mode 100755
index 0000000..ca120c5
--- /dev/null
+++ b/json_parse.js
@@ -0,0 +1,345 @@
+/*
+ http://www.JSON.org/json_parse.js
+ 2009-05-31
+
+ Public Domain.
+
+ NO WARRANTY EXPRESSED OR IMPLIED. USE AT YOUR OWN RISK.
+
+ This file creates a json_parse function.
+
+ 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;
+ });
+
+ This is a reference implementation. You are free to copy, modify, or
+ redistribute.
+
+ 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.
+*/
+
+/*members "", "\"", "\/", "\\", at, b, call, charAt, f, fromCharCode,
+ hasOwnProperty, message, n, name, push, r, t, text
+*/
+
+var json_parse = (function () {
+
+// This is a function that can parse a JSON text, producing a JavaScript
+// data structure. It is a simple, recursive descent parser. It does not use
+// eval or regular expressions, so it can be used as a model for implementing
+// a JSON parser in other languages.
+
+// We are defining the function inside of another function to avoid creating
+// global variables.
+
+ var at, // The index of the current character
+ ch, // The current character
+ escapee = {
+ '"': '"',
+ '\\': '\\',
+ '/': '/',
+ b: '\b',
+ f: '\f',
+ n: '\n',
+ r: '\r',
+ t: '\t'
+ },
+ text,
+
+ error = function (m) {
+
+// Call error when something is wrong.
+
+ throw {
+ name: 'SyntaxError',
+ message: m,
+ at: at,
+ text: text
+ };
+ },
+
+ next = function (c) {
+
+// If a c parameter is provided, verify that it matches the current character.
+
+ if (c && c !== ch) {
+ error("Expected '" + c + "' instead of '" + ch + "'");
+ }
+
+// Get the next character. When there are no more characters,
+// return the empty string.
+
+ ch = text.charAt(at);
+ at += 1;
+ return ch;
+ },
+
+ number = function () {
+
+// Parse a number value.
+
+ var number,
+ string = '';
+
+ if (ch === '-') {
+ string = '-';
+ next('-');
+ }
+ while (ch >= '0' && ch <= '9') {
+ string += ch;
+ next();
+ }
+ if (ch === '.') {
+ string += '.';
+ while (next() && ch >= '0' && ch <= '9') {
+ string += ch;
+ }
+ }
+ if (ch === 'e' || ch === 'E') {
+ string += ch;
+ next();
+ if (ch === '-' || ch === '+') {
+ string += ch;
+ next();
+ }
+ while (ch >= '0' && ch <= '9') {
+ string += ch;
+ next();
+ }
+ }
+ number = +string;
+ if (isNaN(number)) {
+ error("Bad number");
+ } else {
+ return number;
+ }
+ },
+
+ string = function () {
+
+// Parse a string value.
+
+ var hex,
+ i,
+ string = '',
+ uffff;
+
+// When parsing for string values, we must look for " and \ characters.
+
+ if (ch === '"') {
+ while (next()) {
+ if (ch === '"') {
+ next();
+ return string;
+ } else if (ch === '\\') {
+ next();
+ if (ch === 'u') {
+ uffff = 0;
+ for (i = 0; i < 4; i += 1) {
+ hex = parseInt(next(), 16);
+ if (!isFinite(hex)) {
+ break;
+ }
+ uffff = uffff * 16 + hex;
+ }
+ string += String.fromCharCode(uffff);
+ } else if (typeof escapee[ch] === 'string') {
+ string += escapee[ch];
+ } else {
+ break;
+ }
+ } else {
+ string += ch;
+ }
+ }
+ }
+ error("Bad string");
+ },
+
+ white = function () {
+
+// Skip whitespace.
+
+ while (ch && ch <= ' ') {
+ next();
+ }
+ },
+
+ word = function () {
+
+// true, false, or null.
+
+ switch (ch) {
+ case 't':
+ next('t');
+ next('r');
+ next('u');
+ next('e');
+ return true;
+ case 'f':
+ next('f');
+ next('a');
+ next('l');
+ next('s');
+ next('e');
+ return false;
+ case 'n':
+ next('n');
+ next('u');
+ next('l');
+ next('l');
+ return null;
+ }
+ error("Unexpected '" + ch + "'");
+ },
+
+ value, // Place holder for the value function.
+
+ array = function () {
+
+// Parse an array value.
+
+ var array = [];
+
+ if (ch === '[') {
+ next('[');
+ white();
+ if (ch === ']') {
+ next(']');
+ return array; // empty array
+ }
+ while (ch) {
+ array.push(value());
+ white();
+ if (ch === ']') {
+ next(']');
+ return array;
+ }
+ next(',');
+ white();
+ }
+ }
+ error("Bad array");
+ },
+
+ object = function () {
+
+// Parse an object value.
+
+ var key,
+ object = {};
+
+ if (ch === '{') {
+ next('{');
+ white();
+ if (ch === '}') {
+ next('}');
+ return object; // empty object
+ }
+ while (ch) {
+ key = string();
+ white();
+ next(':');
+ if (Object.hasOwnProperty.call(object, key)) {
+ error('Duplicate key "' + key + '"');
+ }
+ object[key] = value();
+ white();
+ if (ch === '}') {
+ next('}');
+ return object;
+ }
+ next(',');
+ white();
+ }
+ }
+ error("Bad object");
+ };
+
+ value = function () {
+
+// Parse a JSON value. It could be an object, an array, a string, a number,
+// or a word.
+
+ white();
+ switch (ch) {
+ case '{':
+ return object();
+ case '[':
+ return array();
+ case '"':
+ return string();
+ case '-':
+ return number();
+ default:
+ return ch >= '0' && ch <= '9' ? number() : word();
+ }
+ };
+
+// Return the json_parse function. It will have access to all of the above
+// functions and variables.
+
+ return function (source, reviver) {
+ var result;
+
+ text = source;
+ at = 0;
+ ch = ' ';
+ result = value();
+ white();
+ if (ch) {
+ error("Syntax error");
+ }
+
+// If there is a reviver function, we recursively walk the new structure,
+// passing each name/value pair to the reviver function for possible
+// transformation, starting with a temporary root object that holds the result
+// in an empty key. If there is not a reviver function, we simply return the
+// result.
+
+ return typeof reviver === 'function' ? (function walk(holder, key) {
+ 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);
+ }({'': result}, '')) : result;
+ };
+}());
diff --git a/json_parse_state.js b/json_parse_state.js
new file mode 100755
index 0000000..a2a9ea7
--- /dev/null
+++ b/json_parse_state.js
@@ -0,0 +1,396 @@
+/*
+ http://www.JSON.org/json_parse_state.js
+ 2009-05-31
+
+ Public Domain.
+
+ NO WARRANTY EXPRESSED OR IMPLIED. USE AT YOUR OWN RISK.
+
+ This file creates a json_parse function.
+
+ 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;
+ });
+
+ This is a reference implementation. You are free to copy, modify, or
+ redistribute.
+
+ 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.
+*/
+
+/*jslint regexp: false*/
+
+/*members "", "\"", ",", "\/", ":", "[", "\\", "]", acomma, avalue, b,
+ call, colon, container, exec, f, false, firstavalue, firstokey,
+ fromCharCode, go, hasOwnProperty, key, length, n, null, ocomma, okey,
+ ovalue, pop, push, r, replace, slice, state, t, test, true, value, "{",
+ "}"
+*/
+
+var json_parse = (function () {
+
+// This function creates a JSON parse function that uses a state machine rather
+// than the dangerous eval function to parse a JSON text.
+
+ var state, // The state of the parser, one of
+ // 'go' The starting state
+ // 'ok' The final, accepting state
+ // 'firstokey' Ready for the first key of the object or
+ // the closing of an empty object
+ // 'okey' Ready for the next key of the object
+ // 'colon' Ready for the colon
+ // 'ovalue' Ready for the value half of a key/value pair
+ // 'ocomma' Ready for a comma or closing }
+ // 'firstavalue' Ready for the first value of an array or
+ // an empty array
+ // 'avalue' Ready for the next value of an array
+ // 'acomma' Ready for a comma or closing ]
+ stack, // The stack, for controlling nesting.
+ container, // The current container object or array
+ key, // The current key
+ value, // The current value
+ escapes = { // Escapement translation table
+ '\\': '\\',
+ '"': '"',
+ '/': '/',
+ 't': '\t',
+ 'n': '\n',
+ 'r': '\r',
+ 'f': '\f',
+ 'b': '\b'
+ },
+ string = { // The actions for string tokens
+ go: function () {
+ state = 'ok';
+ },
+ firstokey: function () {
+ key = value;
+ state = 'colon';
+ },
+ okey: function () {
+ key = value;
+ state = 'colon';
+ },
+ ovalue: function () {
+ state = 'ocomma';
+ },
+ firstavalue: function () {
+ state = 'acomma';
+ },
+ avalue: function () {
+ state = 'acomma';
+ }
+ },
+ number = { // The actions for number tokens
+ go: function () {
+ state = 'ok';
+ },
+ ovalue: function () {
+ state = 'ocomma';
+ },
+ firstavalue: function () {
+ state = 'acomma';
+ },
+ avalue: function () {
+ state = 'acomma';
+ }
+ },
+ action = {
+
+// The action table describes the behavior of the machine. It contains an
+// object for each token. Each object contains a method that is called when
+// a token is matched in a state. An object will lack a method for illegal
+// states.
+
+ '{': {
+ go: function () {
+ stack.push({state: 'ok'});
+ container = {};
+ state = 'firstokey';
+ },
+ ovalue: function () {
+ stack.push({container: container, state: 'ocomma', key: key});
+ container = {};
+ state = 'firstokey';
+ },
+ firstavalue: function () {
+ stack.push({container: container, state: 'acomma'});
+ container = {};
+ state = 'firstokey';
+ },
+ avalue: function () {
+ stack.push({container: container, state: 'acomma'});
+ container = {};
+ state = 'firstokey';
+ }
+ },
+ '}': {
+ firstokey: function () {
+ var pop = stack.pop();
+ value = container;
+ container = pop.container;
+ key = pop.key;
+ state = pop.state;
+ },
+ ocomma: function () {
+ var pop = stack.pop();
+ container[key] = value;
+ value = container;
+ container = pop.container;
+ key = pop.key;
+ state = pop.state;
+ }
+ },
+ '[': {
+ go: function () {
+ stack.push({state: 'ok'});
+ container = [];
+ state = 'firstavalue';
+ },
+ ovalue: function () {
+ stack.push({container: container, state: 'ocomma', key: key});
+ container = [];
+ state = 'firstavalue';
+ },
+ firstavalue: function () {
+ stack.push({container: container, state: 'acomma'});
+ container = [];
+ state = 'firstavalue';
+ },
+ avalue: function () {
+ stack.push({container: container, state: 'acomma'});
+ container = [];
+ state = 'firstavalue';
+ }
+ },
+ ']': {
+ firstavalue: function () {
+ var pop = stack.pop();
+ value = container;
+ container = pop.container;
+ key = pop.key;
+ state = pop.state;
+ },
+ acomma: function () {
+ var pop = stack.pop();
+ container.push(value);
+ value = container;
+ container = pop.container;
+ key = pop.key;
+ state = pop.state;
+ }
+ },
+ ':': {
+ colon: function () {
+ if (Object.hasOwnProperty.call(container, key)) {
+ throw new SyntaxError('Duplicate key "' + key + '"');
+ }
+ state = 'ovalue';
+ }
+ },
+ ',': {
+ ocomma: function () {
+ container[key] = value;
+ state = 'okey';
+ },
+ acomma: function () {
+ container.push(value);
+ state = 'avalue';
+ }
+ },
+ 'true': {
+ go: function () {
+ value = true;
+ state = 'ok';
+ },
+ ovalue: function () {
+ value = true;
+ state = 'ocomma';
+ },
+ firstavalue: function () {
+ value = true;
+ state = 'acomma';
+ },
+ avalue: function () {
+ value = true;
+ state = 'acomma';
+ }
+ },
+ 'false': {
+ go: function () {
+ value = false;
+ state = 'ok';
+ },
+ ovalue: function () {
+ value = false;
+ state = 'ocomma';
+ },
+ firstavalue: function () {
+ value = false;
+ state = 'acomma';
+ },
+ avalue: function () {
+ value = false;
+ state = 'acomma';
+ }
+ },
+ 'null': {
+ go: function () {
+ value = null;
+ state = 'ok';
+ },
+ ovalue: function () {
+ value = null;
+ state = 'ocomma';
+ },
+ firstavalue: function () {
+ value = null;
+ state = 'acomma';
+ },
+ avalue: function () {
+ value = null;
+ state = 'acomma';
+ }
+ }
+ };
+
+ function debackslashify(text) {
+
+// Remove and replace any backslash escapement.
+
+ return text.replace(/\\(?:u(.{4})|([^u]))/g, function (a, b, c) {
+ return b ? String.fromCharCode(parseInt(b, 16)) : escapes[c];
+ });
+ }
+
+ return function (source, reviver) {
+
+// A regular expression is used to extract tokens from the JSON text.
+// The extraction process is cautious.
+
+ var r, // The result of the exec method.
+ tx = /^[\x20\t\n\r]*(?:([,:\[\]{}]|true|false|null)|(-?\d+(?:\.\d*)?(?:[eE][+\-]?\d+)?)|"((?:[^\r\n\t\\\"]|\\(?:["\\\/trnfb]|u[0-9a-fA-F]{4}))*)")/;
+
+// Set the starting state.
+
+ state = 'go';
+
+// The stack records the container, key, and state for each object or array
+// that contains another object or array while processing nested structures.
+
+ stack = [];
+
+// If any error occurs, we will catch it and ultimately throw a syntax error.
+
+ try {
+
+// For each token...
+
+ for (;;) {
+ r = tx.exec(source);
+ if (!r) {
+ break;
+ }
+
+// r is the result array from matching the tokenizing regular expression.
+// r[0] contains everything that matched, including any initial whitespace.
+// r[1] contains any punctuation that was matched, or true, false, or null.
+// r[2] contains a matched number, still in string form.
+// r[3] contains a matched string, without quotes but with ecapement.
+
+ if (r[1]) {
+
+// Token: Execute the action for this state and token.
+
+ action[r[1]][state]();
+
+ } else if (r[2]) {
+
+// Number token: Convert the number string into a number value and execute
+// the action for this state and number.
+
+ value = +r[2];
+ number[state]();
+ } else {
+
+// String token: Replace the escapement sequences and execute the action for
+// this state and string.
+
+ value = debackslashify(r[3]);
+ string[state]();
+ }
+
+// Remove the token from the string. The loop will continue as long as there
+// are tokens. This is a slow process, but it allows the use of ^ matching,
+// which assures that no illegal tokens slip through.
+
+ source = source.slice(r[0].length);
+ }
+
+// If we find a state/token combination that is illegal, then the action will
+// cause an error. We handle the error by simply changing the state.
+
+ } catch (e) {
+ state = e;
+ }
+
+// The parsing is finished. If we are not in the final 'ok' state, or if the
+// remaining source contains anything except whitespace, then we did not have
+//a well-formed JSON text.
+
+ if (state !== 'ok' || /[^\x20\t\n\r]/.test(source)) {
+ throw state instanceof SyntaxError ? state : new SyntaxError('JSON');
+ }
+
+// If there is a reviver function, we recursively walk the new structure,
+// passing each name/value pair to the reviver function for possible
+// transformation, starting with a temporary root object that holds the current
+// value in an empty key. If there is not a reviver function, we simply return
+// that value.
+
+ return typeof reviver === 'function' ? (function walk(holder, key) {
+ 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);
+ }({'': value}, '')) : value;
+ };
+}());
--
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