4a909a7a62
the properties as well. This fixes some failing tests. - Moved json parsing into native code. git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@1789 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
255 lines
7.2 KiB
JavaScript
255 lines
7.2 KiB
JavaScript
// Copyright 2009 the V8 project authors. All rights reserved.
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following
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// disclaimer in the documentation and/or other materials provided
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// with the distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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var $JSON = global.JSON;
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function ParseJSONUnfiltered(text) {
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var s = $String(text);
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var f = %CompileString("(" + text + ")", -1, true);
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return f();
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}
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function Revive(holder, name, reviver) {
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var val = holder[name];
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if (IS_OBJECT(val)) {
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if (IS_ARRAY(val)) {
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var length = val.length;
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for (var i = 0; i < length; i++) {
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var newElement = Revive(val, $String(i), reviver);
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val[i] = newElement;
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}
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} else {
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for (var p in val) {
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if (ObjectHasOwnProperty.call(val, p)) {
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var newElement = Revive(val, p, reviver);
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if (IS_UNDEFINED(newElement)) {
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delete val[p];
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} else {
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val[p] = newElement;
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}
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}
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}
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}
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}
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return reviver.call(holder, name, val);
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}
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function JSONParse(text, reviver) {
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var unfiltered = ParseJSONUnfiltered(text);
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if (IS_FUNCTION(reviver)) {
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return Revive({'': unfiltered}, '', reviver);
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} else {
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return unfiltered;
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}
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}
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var characterQuoteCache = {
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'\"': '\\"',
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'\\': '\\\\',
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'/': '\\/',
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'\b': '\\b',
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'\f': '\\f',
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'\n': '\\n',
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'\r': '\\r',
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'\t': '\\t',
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'\x0B': '\\u000b'
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};
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function QuoteSingleJSONCharacter(c) {
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if (c in characterQuoteCache)
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return characterQuoteCache[c];
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var charCode = c.charCodeAt(0);
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var result;
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if (charCode < 16) result = '\\u000';
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else if (charCode < 256) result = '\\u00';
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else if (charCode < 4096) result = '\\u0';
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else result = '\\u';
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result += charCode.toString(16);
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characterQuoteCache[c] = result;
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return result;
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}
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function QuoteJSONString(str) {
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var quotable = /[\\\"\x00-\x1f\x80-\uffff]/g;
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return '"' + str.replace(quotable, QuoteSingleJSONCharacter) + '"';
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}
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function StackContains(stack, val) {
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var length = stack.length;
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for (var i = 0; i < length; i++) {
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if (stack[i] === val)
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return true;
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}
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return false;
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}
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function SerializeArray(value, replacer, stack, indent, gap) {
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if (StackContains(stack, value))
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throw MakeTypeError('circular_structure', []);
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stack.push(value);
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var stepback = indent;
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indent += gap;
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var partial = [];
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var len = value.length;
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for (var i = 0; i < len; i++) {
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var strP = JSONSerialize($String(i), value, replacer, stack,
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indent, gap);
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if (IS_UNDEFINED(strP))
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strP = "null";
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partial.push(strP);
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}
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var final;
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if (gap == "") {
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final = "[" + partial.join(",") + "]";
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} else if (partial.length > 0) {
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var separator = ",\n" + indent;
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final = "[\n" + indent + partial.join(separator) + "\n" +
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stepback + "]";
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} else {
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final = "[]";
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}
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stack.pop();
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return final;
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}
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function SerializeObject(value, replacer, stack, indent, gap) {
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if (StackContains(stack, value))
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throw MakeTypeError('circular_structure', []);
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stack.push(value);
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var stepback = indent;
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indent += gap;
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var partial = [];
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if (IS_ARRAY(replacer)) {
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var length = replacer.length;
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for (var i = 0; i < length; i++) {
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if (ObjectHasOwnProperty.call(replacer, i)) {
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var p = replacer[i];
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var strP = JSONSerialize(p, value, replacer, stack, indent, gap);
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if (!IS_UNDEFINED(strP)) {
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var member = QuoteJSONString(p) + ":";
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if (gap != "") member += " ";
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member += strP;
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partial.push(member);
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}
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}
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}
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} else {
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for (var p in value) {
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if (ObjectHasOwnProperty.call(value, p)) {
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var strP = JSONSerialize(p, value, replacer, stack, indent, gap);
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if (!IS_UNDEFINED(strP)) {
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var member = QuoteJSONString(p) + ":";
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if (gap != "") member += " ";
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member += strP;
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partial.push(member);
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}
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}
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}
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}
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var final;
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if (gap == "") {
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final = "{" + partial.join(",") + "}";
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} else if (partial.length > 0) {
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var separator = ",\n" + indent;
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final = "{\n" + indent + partial.join(separator) + "\n" +
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stepback + "}";
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} else {
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final = "{}";
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}
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stack.pop();
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return final;
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}
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function JSONSerialize(key, holder, replacer, stack, indent, gap) {
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var value = holder[key];
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if (IS_OBJECT(value) && value) {
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var toJSON = value.toJSON;
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if (IS_FUNCTION(toJSON))
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value = toJSON.call(value, key);
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}
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if (IS_FUNCTION(replacer))
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value = replacer.call(holder, key, value);
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// Unwrap value if necessary
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if (IS_OBJECT(value)) {
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if (IS_NUMBER_WRAPPER(value)) {
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value = $Number(value);
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} else if (IS_STRING_WRAPPER(value)) {
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value = $String(value);
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}
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}
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switch (typeof value) {
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case "string":
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return QuoteJSONString(value);
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case "object":
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if (!value) {
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return "null";
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} else if (IS_ARRAY(value)) {
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return SerializeArray(value, replacer, stack, indent, gap);
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} else {
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return SerializeObject(value, replacer, stack, indent, gap);
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}
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case "number":
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return $isFinite(value) ? $String(value) : "null";
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case "boolean":
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return value ? "true" : "false";
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}
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}
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function JSONStringify(value, replacer, space) {
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var stack = [];
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var indent = "";
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if (IS_OBJECT(space)) {
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// Unwrap 'space' if it is wrapped
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if (IS_NUMBER_WRAPPER(space)) {
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space = $Number(space);
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} else if (IS_STRING_WRAPPER(space)) {
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space = $String(space);
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}
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}
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var gap;
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if (IS_NUMBER(space)) {
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space = $Math.min(space, 100);
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gap = "";
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for (var i = 0; i < space; i++)
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gap += " ";
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} else if (IS_STRING(space)) {
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gap = space;
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} else {
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gap = "";
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}
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return JSONSerialize('', {'': value}, replacer, stack, indent, gap);
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}
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function SetupJSON() {
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InstallFunctions($JSON, DONT_ENUM, $Array(
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"parse", JSONParse,
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"stringify", JSONStringify
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));
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}
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SetupJSON();
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