[json] support replacer function in BasicJsonStringifier.

src/js/json.js

 // 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.
 
 (function(global, utils) {
 
 "use strict";
 
 %CheckIsBootstrapping();
 
 // -------------------------------------------------------------------
 // Imports
 
 var GlobalDate = global.Date;
 var GlobalJSON = global.JSON;
 var GlobalSet = global.Set;
 var InternalArray = utils.InternalArray;
-var MakeTypeError;
-var MaxSimple;
-var MinSimple;
-var ObjectHasOwnProperty;
-var Stack;
-var StackHas;
-var StackPop;
-var StackPush;
 var toStringTagSymbol = utils.ImportNow("to_string_tag_symbol");
 
-utils.Import(function(from) {
-  MakeTypeError = from.MakeTypeError;
-  MaxSimple = from.MaxSimple;
-  MinSimple = from.MinSimple;
-  ObjectHasOwnProperty = from.ObjectHasOwnProperty;
-  Stack = from.Stack;
-  StackHas = from.StackHas;
-  StackPop = from.StackPop;
-  StackPush = from.StackPush;
-});
-
 // -------------------------------------------------------------------
 
 function CreateDataProperty(o, p, v) {
   var desc = {value: v, enumerable: true, writable: true, configurable: true};
   return %reflect_define_property(o, p, desc);
 }
 
 
 function InternalizeJSONProperty(holder, name, reviver) {
   var val = holder[name];
@@ skipping 28 matching lines @@
 
 function JSONParse(text, reviver) {
   var unfiltered = %ParseJson(text);
   if (IS_CALLABLE(reviver)) {
     return InternalizeJSONProperty({'': unfiltered}, '', reviver);
   } else {
     return unfiltered;
   }
 }
 
-
-function SerializeArray(value, replacer, stack, indent, gap) {
-  if (StackHas(stack, value)) throw MakeTypeError(kCircularStructure);
-  StackPush(stack, value);
-  var stepback = indent;
-  indent += gap;
-  var partial = new InternalArray();
-  var len = TO_LENGTH(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 = "[]";
-  }
-  StackPop(stack);
-  return final;
-}
-
-
-function SerializeObject(value, replacer, stack, indent, gap) {
-  if (StackHas(stack, value)) throw MakeTypeError(kCircularStructure);
-  StackPush(stack, value);
-  var stepback = indent;
-  indent += gap;
-  var partial = new InternalArray();
-  var keys = %object_keys(value);
-  for (var i = 0; i < keys.length; i++) {
-    var p = keys[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);
-    }
-  }
-  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 = "{}";
-  }
-  StackPop(stack);
-  return final;
-}
-
-
-function JSONSerialize(key, holder, replacer, stack, indent, gap) {
-  var value = holder[key];
-  if (IS_RECEIVER(value)) {
-    var toJSON = value.toJSON;
-    if (IS_CALLABLE(toJSON)) {
-      value = %_Call(toJSON, value, key);
-    }
-  }
-  if (IS_CALLABLE(replacer)) {
-    value = %_Call(replacer, holder, key, value);
-  }
-  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_RECEIVER(value) && !IS_CALLABLE(value)) {
-    // Non-callable object. If it's a primitive wrapper, it must be unwrapped.
-    if (%is_arraylike(value)) {
-      return SerializeArray(value, replacer, stack, indent, gap);
-    } else if (IS_NUMBER_WRAPPER(value)) {
-      value = TO_NUMBER(value);
-      return JSON_NUMBER_TO_STRING(value);
-    } else if (IS_STRING_WRAPPER(value)) {
-      return %QuoteJSONString(TO_STRING(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 (arguments.length === 1) return %BasicJSONStringify(value, UNDEFINED, "");
-  if (!IS_CALLABLE(replacer)) {
-    return %BasicJSONStringify(value, replacer, space);
-  }
-  if (IS_OBJECT(space)) {
-    // Unwrap 'space' if it is wrapped
-    if (IS_NUMBER_WRAPPER(space)) {
-      space = TO_NUMBER(space);
-    } else if (IS_STRING_WRAPPER(space)) {
-      space = TO_STRING(space);
-    }
-  }
-  var gap;
-  if (IS_NUMBER(space)) {
-    space = MaxSimple(0, MinSimple(TO_INTEGER(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 Stack(), "", gap);
-}
-
 // -------------------------------------------------------------------
 
 %AddNamedProperty(GlobalJSON, toStringTagSymbol, "JSON", READ_ONLY | DONT_ENUM);
 
 // Set up non-enumerable properties of the JSON object.
 utils.InstallFunctions(GlobalJSON, DONT_ENUM, [
   "parse", JSONParse,
-  "stringify", JSONStringify
 ]);
 
 // -------------------------------------------------------------------
 // Date.toJSON
 
 // 20.3.4.37 Date.prototype.toJSON ( key )
 function DateToJSON(key) {
   var o = TO_OBJECT(this);
   var tv = TO_PRIMITIVE_NUMBER(o);
   if (IS_NUMBER(tv) && !NUMBER_IS_FINITE(tv)) {
     return null;
   }
   return o.toISOString();
 }
 
 // Set up non-enumerable functions of the Date prototype object.
 utils.InstallFunctions(GlobalDate.prototype, DONT_ENUM, [
   "toJSON", DateToJSON
 ]);
 
 })