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// Copyright 2009 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
var $jsonSerializeAdapter;
(function(global, shared, exports) {
"use strict";
%CheckIsBootstrapping();
var GlobalJSON = 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, %_NumberToString(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_SPEC_FUNCTION(reviver)) {
return Revive({'': unfiltered}, '', reviver);
} else {
return unfiltered;
}
}
function SerializeArray(value, replacer, stack, indent, gap) {
if (!%PushIfAbsent(stack, value)) {
throw MakeTypeError('circular_structure', []);
}
var stepback = indent;
indent += gap;
var partial = new InternalArray();
var len = value.length;
for (var i = 0; i < len; i++) {
var strP = JSONSerialize(%_NumberToString(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', []);
}
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_SPEC_FUNCTION(toJSON)) {
value = %_CallFunction(value, key, toJSON);
}
}
if (IS_SPEC_FUNCTION(replacer)) {
value = %_CallFunction(holder, key, value, replacer);
}
if (IS_STRING(value)) {
return %QuoteJSONString(value);
} else if (IS_NUMBER(value)) {
return JSON_NUMBER_TO_STRING(value);
} 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 = $toNumber(value);
return JSON_NUMBER_TO_STRING(value);
} else if (IS_STRING_WRAPPER(value)) {
return %QuoteJSONString($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 UNDEFINED;
}
function JSONStringify(value, replacer, space) {
if (%_ArgumentsLength() == 1) {
return %BasicJSONStringify(value);
}
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 = $max(0, $min($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 = "";
}
if (IS_ARRAY(replacer)) {
// Deduplicate replacer array items.
var property_list = new InternalArray();
var seen_properties = { __proto__: null };
var seen_sentinel = {};
var length = replacer.length;
for (var i = 0; i < length; i++) {
var item = replacer[i];
if (IS_STRING_WRAPPER(item)) {
item = $toString(item);
} else {
if (IS_NUMBER_WRAPPER(item)) item = $toNumber(item);
if (IS_NUMBER(item)) item = %_NumberToString(item);
}
if (IS_STRING(item) && seen_properties[item] != seen_sentinel) {
property_list.push(item);
// We cannot use true here because __proto__ needs to be an object.
seen_properties[item] = seen_sentinel;
}
}
replacer = property_list;
}
return JSONSerialize('', {'': value}, replacer, new InternalArray(), "", gap);
}
// -------------------------------------------------------------------
%AddNamedProperty(GlobalJSON, symbolToStringTag, "JSON", READ_ONLY | DONT_ENUM);
// Set up non-enumerable properties of the JSON object.
$installFunctions(GlobalJSON, DONT_ENUM, [
"parse", JSONParse,
"stringify", JSONStringify
]);
// -------------------------------------------------------------------
// JSON Builtins
$jsonSerializeAdapter = function(key, object) {
var holder = {};
holder[key] = object;
// No need to pass the actual holder since there is no replacer function.
return JSONSerialize(key, holder, UNDEFINED, new InternalArray(), "", "");
}
})
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