--- /dev/null
+var BigNumber = null;
+/*
+ json_parse.js
+ 2012-06-20
+
+ Public Domain.
+
+ NO WARRANTY EXPRESSED OR IMPLIED. USE AT YOUR OWN RISK.
+
+ This file creates a json_parse function.
+ During create you can (optionally) specify some behavioural switches
+
+ require('json-bigint')(options)
+
+ The optional options parameter holds switches that drive certain
+ aspects of the parsing process:
+ * options.strict = true will warn about duplicate-key usage in the json.
+ The default (strict = false) will silently ignore those and overwrite
+ values for keys that are in duplicate use.
+
+ The resulting function follows this signature:
+ 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, prototype, push, r, t, text
+*/
+
+var json_parse = function (options) {
+ "use strict";
+
+// 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.
+
+
+// Default options one can override by passing options to the parse()
+ var _options = {
+ "strict": false, // not being strict means do not generate syntax errors for "duplicate key"
+ "storeAsString": false // toggles whether the values should be stored as BigNumber (default) or a string
+ };
+
+
+// If there are options, then use them to override the default _options
+ if (options !== undefined && options !== null) {
+ if (options.strict === true) {
+ _options.strict = true;
+ }
+ if (options.storeAsString === true) {
+ _options.storeAsString = true;
+ }
+ }
+
+
+ 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 (!isFinite(number)) {
+ error("Bad number");
+ } else {
+ if (BigNumber == null)
+ BigNumber = require('bignumber.js');
+ //if (number > 9007199254740992 || number < -9007199254740992)
+ // Bignumber has stricter check: everything with length > 15 digits disallowed
+ if (string.length > 15)
+ return (_options.storeAsString === true) ? string : new BigNumber(string);
+ 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;
+ }
+ 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 (_options.strict === true && 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') {
+ Object.keys(value).forEach(function(k) {
+ v = walk(value, k);
+ if (v !== undefined) {
+ value[k] = v;
+ } else {
+ delete value[k];
+ }
+ });
+ }
+ return reviver.call(holder, key, value);
+ }({'': result}, ''))
+ : result;
+ };
+}
+
+module.exports = json_parse;