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Diffstat (limited to 'src/3rdparty/v8/src/json.js')
| -rw-r--r-- | src/3rdparty/v8/src/json.js | 342 |
1 files changed, 342 insertions, 0 deletions
diff --git a/src/3rdparty/v8/src/json.js b/src/3rdparty/v8/src/json.js new file mode 100644 index 0000000..7a6189c --- /dev/null +++ b/src/3rdparty/v8/src/json.js @@ -0,0 +1,342 @@ +// 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 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 (%_CallFunction(val, p, ObjectHasOwnProperty)) { + var newElement = Revive(val, p, reviver); + if (IS_UNDEFINED(newElement)) { + delete val[p]; + } else { + val[p] = newElement; + } + } + } + } + } + return %_CallFunction(holder, name, val, reviver); +} + +function JSONParse(text, reviver) { + var unfiltered = %ParseJson(TO_STRING_INLINE(text)); + if (IS_FUNCTION(reviver)) { + return Revive({'': unfiltered}, '', reviver); + } else { + return unfiltered; + } +} + +function SerializeArray(value, replacer, stack, indent, gap) { + if (!%PushIfAbsent(stack, value)) { + throw MakeTypeError('circular_structure', $Array()); + } + var stepback = indent; + indent += gap; + var partial = new InternalArray(); + var len = value.length; + for (var i = 0; i < len; i++) { + var strP = JSONSerialize($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 (!%PushIfAbsent(stack, value)) { + throw MakeTypeError('circular_structure', $Array()); + } + var stepback = indent; + indent += gap; + var partial = new InternalArray(); + if (IS_ARRAY(replacer)) { + var length = replacer.length; + for (var i = 0; i < length; i++) { + if (%_CallFunction(replacer, i, ObjectHasOwnProperty)) { + 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 (%_CallFunction(value, p, ObjectHasOwnProperty)) { + 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_SPEC_OBJECT(value)) { + var toJSON = value.toJSON; + if (IS_FUNCTION(toJSON)) { + value = %_CallFunction(value, key, toJSON); + } + } + if (IS_FUNCTION(replacer)) { + value = %_CallFunction(holder, key, value, replacer); + } + if (IS_STRING(value)) { + return %QuoteJSONString(value); + } else if (IS_NUMBER(value)) { + return NUMBER_IS_FINITE(value) ? $String(value) : "null"; + } else if (IS_BOOLEAN(value)) { + return value ? "true" : "false"; + } else if (IS_NULL(value)) { + return "null"; + } else if (IS_SPEC_OBJECT(value) && !(typeof value == "function")) { + // Non-callable object. If it's a primitive wrapper, it must be unwrapped. + if (IS_ARRAY(value)) { + return SerializeArray(value, replacer, stack, indent, gap); + } else if (IS_NUMBER_WRAPPER(value)) { + value = ToNumber(value); + return NUMBER_IS_FINITE(value) ? ToString(value) : "null"; + } else if (IS_STRING_WRAPPER(value)) { + return %QuoteJSONString(ToString(value)); + } else if (IS_BOOLEAN_WRAPPER(value)) { + return %_ValueOf(value) ? "true" : "false"; + } else { + return SerializeObject(value, replacer, stack, indent, gap); + } + } + // Undefined or a callable object. + return void 0; +} + + +function BasicSerializeArray(value, stack, builder) { + var len = value.length; + if (len == 0) { + builder.push("[]"); + return; + } + if (!%PushIfAbsent(stack, value)) { + throw MakeTypeError('circular_structure', $Array()); + } + builder.push("["); + var val = value[0]; + if (IS_STRING(val)) { + // First entry is a string. Remaining entries are likely to be strings too. + builder.push(%QuoteJSONString(val)); + for (var i = 1; i < len; i++) { + val = value[i]; + if (IS_STRING(val)) { + builder.push(%QuoteJSONStringComma(val)); + } else { + builder.push(","); + var before = builder.length; + BasicJSONSerialize(i, value[i], stack, builder); + if (before == builder.length) builder[before - 1] = ",null"; + } + } + } else if (IS_NUMBER(val)) { + // First entry is a number. Remaining entries are likely to be numbers too. + builder.push(NUMBER_IS_FINITE(val) ? %_NumberToString(val) : "null"); + for (var i = 1; i < len; i++) { + builder.push(","); + val = value[i]; + if (IS_NUMBER(val)) { + builder.push(NUMBER_IS_FINITE(val) + ? %_NumberToString(val) + : "null"); + } else { + var before = builder.length; + BasicJSONSerialize(i, value[i], stack, builder); + if (before == builder.length) builder[before - 1] = ",null"; + } + } + } else { + var before = builder.length; + BasicJSONSerialize(0, val, stack, builder); + if (before == builder.length) builder.push("null"); + for (var i = 1; i < len; i++) { + builder.push(","); + before = builder.length; + val = value[i]; + BasicJSONSerialize(i, val, stack, builder); + if (before == builder.length) builder[before - 1] = ",null"; + } + } + stack.pop(); + builder.push("]"); +} + + +function BasicSerializeObject(value, stack, builder) { + if (!%PushIfAbsent(stack, value)) { + throw MakeTypeError('circular_structure', $Array()); + } + builder.push("{"); + var first = true; + for (var p in value) { + if (%HasLocalProperty(value, p)) { + if (!first) { + builder.push(%QuoteJSONStringComma(p)); + } else { + builder.push(%QuoteJSONString(p)); + } + builder.push(":"); + var before = builder.length; + BasicJSONSerialize(p, value[p], stack, builder); + if (before == builder.length) { + builder.pop(); + builder.pop(); + } else { + first = false; + } + } + } + stack.pop(); + builder.push("}"); +} + + +function BasicJSONSerialize(key, value, stack, builder) { + if (IS_SPEC_OBJECT(value)) { + var toJSON = value.toJSON; + if (IS_FUNCTION(toJSON)) { + value = %_CallFunction(value, ToString(key), toJSON); + } + } + if (IS_STRING(value)) { + builder.push(%QuoteJSONString(value)); + } else if (IS_NUMBER(value)) { + builder.push(NUMBER_IS_FINITE(value) ? %_NumberToString(value) : "null"); + } else if (IS_BOOLEAN(value)) { + builder.push(value ? "true" : "false"); + } else if (IS_NULL(value)) { + builder.push("null"); + } else if (IS_SPEC_OBJECT(value) && !(typeof value == "function")) { + // Value is a non-callable object. + // Unwrap value if necessary + if (IS_NUMBER_WRAPPER(value)) { + value = ToNumber(value); + builder.push(NUMBER_IS_FINITE(value) ? %_NumberToString(value) : "null"); + } else if (IS_STRING_WRAPPER(value)) { + builder.push(%QuoteJSONString(ToString(value))); + } else if (IS_BOOLEAN_WRAPPER(value)) { + builder.push(%_ValueOf(value) ? "true" : "false"); + } else if (IS_ARRAY(value)) { + BasicSerializeArray(value, stack, builder); + } else { + BasicSerializeObject(value, stack, builder); + } + } +} + + +function JSONStringify(value, replacer, space) { + if (%_ArgumentsLength() == 1) { + var builder = new InternalArray(); + BasicJSONSerialize('', value, new InternalArray(), builder); + if (builder.length == 0) return; + var result = %_FastAsciiArrayJoin(builder, ""); + if (!IS_UNDEFINED(result)) return result; + return %StringBuilderConcat(builder, builder.length, ""); + } + if (IS_OBJECT(space)) { + // Unwrap 'space' if it is wrapped + if (IS_NUMBER_WRAPPER(space)) { + space = ToNumber(space); + } else if (IS_STRING_WRAPPER(space)) { + space = ToString(space); + } + } + var gap; + if (IS_NUMBER(space)) { + space = MathMax(0, MathMin(ToInteger(space), 10)); + gap = SubString(" ", 0, space); + } else if (IS_STRING(space)) { + if (space.length > 10) { + gap = SubString(space, 0, 10); + } else { + gap = space; + } + } else { + gap = ""; + } + return JSONSerialize('', {'': value}, replacer, new InternalArray(), "", gap); +} + +function SetupJSON() { + InstallFunctions($JSON, DONT_ENUM, $Array( + "parse", JSONParse, + "stringify", JSONStringify + )); +} + +SetupJSON(); |