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author | Ryan Dahl <ry@tinyclouds.org> | 2010-03-25 09:53:58 -0700 |
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committer | Ryan Dahl <ry@tinyclouds.org> | 2010-03-25 09:53:58 -0700 |
commit | 48f5f77713db6cb9d13495f0b780a62dbad2a9a7 (patch) | |
tree | 9b28ef45296722f9a17ebbb4cbcec8ad7ba61d68 /deps/v8/src/json.js | |
parent | 6740dd48b38b8de1b490437cee09b2a052de583a (diff) | |
download | node-new-48f5f77713db6cb9d13495f0b780a62dbad2a9a7.tar.gz |
Update to V8 2.1.9.1
Diffstat (limited to 'deps/v8/src/json.js')
-rw-r--r-- | deps/v8/src/json.js | 268 |
1 files changed, 268 insertions, 0 deletions
diff --git a/deps/v8/src/json.js b/deps/v8/src/json.js new file mode 100644 index 0000000000..3e42d36609 --- /dev/null +++ b/deps/v8/src/json.js @@ -0,0 +1,268 @@ +// Copyright 2009 the V8 project authors. All rights reserved. +// Redistribution and use in source and binary forms, with or without +// modification, are permitted provided that the following conditions are +// met: +// +// * Redistributions of source code must retain the above copyright +// notice, this list of conditions and the following disclaimer. +// * Redistributions in binary form must reproduce the above +// copyright notice, this list of conditions and the following +// disclaimer in the documentation and/or other materials provided +// with the distribution. +// * Neither the name of Google Inc. nor the names of its +// contributors may be used to endorse or promote products derived +// from this software without specific prior written permission. +// +// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +var $JSON = global.JSON; + +function ParseJSONUnfiltered(text) { + var s = $String(text); + var f = %CompileString(text, true); + return f(); +} + +function Revive(holder, name, reviver) { + var val = holder[name]; + if (IS_OBJECT(val)) { + if (IS_ARRAY(val)) { + var length = val.length; + for (var i = 0; i < length; i++) { + var newElement = Revive(val, $String(i), reviver); + val[i] = newElement; + } + } else { + for (var p in val) { + if (ObjectHasOwnProperty.call(val, p)) { + var newElement = Revive(val, p, reviver); + if (IS_UNDEFINED(newElement)) { + delete val[p]; + } else { + val[p] = newElement; + } + } + } + } + } + return reviver.call(holder, name, val); +} + +function JSONParse(text, reviver) { + var unfiltered = ParseJSONUnfiltered(text); + if (IS_FUNCTION(reviver)) { + return Revive({'': unfiltered}, '', reviver); + } else { + return unfiltered; + } +} + +var characterQuoteCache = { + '\"': '\\"', + '\\': '\\\\', + '/': '\\/', + '\b': '\\b', + '\f': '\\f', + '\n': '\\n', + '\r': '\\r', + '\t': '\\t', + '\x0B': '\\u000b' +}; + +function QuoteSingleJSONCharacter(c) { + if (c in characterQuoteCache) { + return characterQuoteCache[c]; + } + var charCode = c.charCodeAt(0); + var result; + if (charCode < 16) result = '\\u000'; + else if (charCode < 256) result = '\\u00'; + else if (charCode < 4096) result = '\\u0'; + else result = '\\u'; + result += charCode.toString(16); + characterQuoteCache[c] = result; + return result; +} + +function QuoteJSONString(str) { + var quotable = /[\\\"\x00-\x1f\x80-\uffff]/g; + return '"' + str.replace(quotable, QuoteSingleJSONCharacter) + '"'; +} + +function StackContains(stack, val) { + var length = stack.length; + for (var i = 0; i < length; i++) { + if (stack[i] === val) { + return true; + } + } + return false; +} + +function SerializeArray(value, replacer, stack, indent, gap) { + if (StackContains(stack, value)) { + throw MakeTypeError('circular_structure', []); + } + stack.push(value); + var stepback = indent; + indent += gap; + var partial = []; + var len = value.length; + for (var i = 0; i < len; i++) { + var strP = JSONSerialize($String(i), value, replacer, stack, + indent, gap); + if (IS_UNDEFINED(strP)) { + strP = "null"; + } + partial.push(strP); + } + var final; + if (gap == "") { + final = "[" + partial.join(",") + "]"; + } else if (partial.length > 0) { + var separator = ",\n" + indent; + final = "[\n" + indent + partial.join(separator) + "\n" + + stepback + "]"; + } else { + final = "[]"; + } + stack.pop(); + return final; +} + +function SerializeObject(value, replacer, stack, indent, gap) { + if (StackContains(stack, value)) { + throw MakeTypeError('circular_structure', []); + } + stack.push(value); + var stepback = indent; + indent += gap; + var partial = []; + if (IS_ARRAY(replacer)) { + var length = replacer.length; + for (var i = 0; i < length; i++) { + if (ObjectHasOwnProperty.call(replacer, i)) { + var p = replacer[i]; + var strP = JSONSerialize(p, value, replacer, stack, indent, gap); + if (!IS_UNDEFINED(strP)) { + var member = QuoteJSONString(p) + ":"; + if (gap != "") member += " "; + member += strP; + partial.push(member); + } + } + } + } else { + for (var p in value) { + if (ObjectHasOwnProperty.call(value, p)) { + var strP = JSONSerialize(p, value, replacer, stack, indent, gap); + if (!IS_UNDEFINED(strP)) { + var member = QuoteJSONString(p) + ":"; + if (gap != "") member += " "; + member += strP; + partial.push(member); + } + } + } + } + var final; + if (gap == "") { + final = "{" + partial.join(",") + "}"; + } else if (partial.length > 0) { + var separator = ",\n" + indent; + final = "{\n" + indent + partial.join(separator) + "\n" + + stepback + "}"; + } else { + final = "{}"; + } + stack.pop(); + return final; +} + +function JSONSerialize(key, holder, replacer, stack, indent, gap) { + var value = holder[key]; + if (IS_OBJECT(value) && value) { + var toJSON = value.toJSON; + if (IS_FUNCTION(toJSON)) { + value = toJSON.call(value, key); + } + } + if (IS_FUNCTION(replacer)) { + value = replacer.call(holder, key, value); + } + // Unwrap value if necessary + if (IS_OBJECT(value)) { + if (IS_NUMBER_WRAPPER(value)) { + value = $Number(value); + } else if (IS_STRING_WRAPPER(value)) { + value = $String(value); + } else if (IS_BOOLEAN_WRAPPER(value)) { + value = $Boolean(value); + } + } + switch (typeof value) { + case "string": + return QuoteJSONString(value); + case "object": + if (!value) { + return "null"; + } else if (IS_ARRAY(value)) { + return SerializeArray(value, replacer, stack, indent, gap); + } else { + return SerializeObject(value, replacer, stack, indent, gap); + } + case "number": + return $isFinite(value) ? $String(value) : "null"; + case "boolean": + return value ? "true" : "false"; + } +} + +function JSONStringify(value, replacer, space) { + var stack = []; + var indent = ""; + if (IS_OBJECT(space)) { + // Unwrap 'space' if it is wrapped + if (IS_NUMBER_WRAPPER(space)) { + space = $Number(space); + } else if (IS_STRING_WRAPPER(space)) { + space = $String(space); + } + } + var gap; + if (IS_NUMBER(space)) { + space = $Math.min(space, 10); + gap = ""; + for (var i = 0; i < space; i++) { + gap += " "; + } + } else if (IS_STRING(space)) { + if (space.length > 10) { + gap = space.substring(0, 10); + } else { + gap = space; + } + } else { + gap = ""; + } + return JSONSerialize('', {'': value}, replacer, stack, indent, gap); +} + +function SetupJSON() { + InstallFunctions($JSON, DONT_ENUM, $Array( + "parse", JSONParse, + "stringify", JSONStringify + )); +} + +SetupJSON(); |