Move builtin JavaScript sources into own directory.

src/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 GlobalJSON = global.JSON;
-var InternalArray = utils.InternalArray;
-var MathMax;
-var MathMin;
-var ObjectHasOwnProperty;
-var toStringTagSymbol = utils.ImportNow("to_string_tag_symbol");
-
-utils.Import(function(from) {
-  MathMax = from.MathMax;
-  MathMin = from.MathMin;
-  ObjectHasOwnProperty = from.ObjectHasOwnProperty;
-});
-
-// -------------------------------------------------------------------
-
-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 (HAS_OWN_PROPERTY(val, p)) {
-          var newElement = Revive(val, p, reviver);
-          if (IS_UNDEFINED(newElement)) {
-            delete val[p];
-          } else {
-            val[p] = newElement;
-          }
-        }
-      }
-    }
-  }
-  return %_Call(reviver, holder, name, val);
-}
-
-
-function JSONParse(text, reviver) {
-  var unfiltered = %ParseJson(text);
-  if (IS_CALLABLE(reviver)) {
-    return Revive({'': unfiltered}, '', reviver);
-  } else {
-    return unfiltered;
-  }
-}
-
-
-function SerializeArray(value, replacer, stack, indent, gap) {
-  if (!%PushIfAbsent(stack, value)) throw MakeTypeError(kCircularStructure);
-  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(kCircularStructure);
-  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 (HAS_OWN_PROPERTY(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 (HAS_OWN_PROPERTY(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_SPEC_OBJECT(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_SPEC_OBJECT(value) && !IS_CALLABLE(value)) {
-    // 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 = 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 (%_ArgumentsLength() == 1) {
-    return %BasicJSONStringify(value);
-  }
-  if (IS_ARRAY(replacer)) {
-    // Deduplicate replacer array items.
-    var property_list = new InternalArray();
-    var seen_properties = { __proto__: null };
-    var length = replacer.length;
-    for (var i = 0; i < length; i++) {
-      var v = replacer[i];
-      var item;
-      if (IS_STRING(v)) {
-        item = v;
-      } else if (IS_NUMBER(v)) {
-        item = %_NumberToString(v);
-      } else if (IS_STRING_WRAPPER(v) || IS_NUMBER_WRAPPER(v)) {
-        item = TO_STRING(v);
-      } else {
-        continue;
-      }
-      if (!seen_properties[item]) {
-        property_list.push(item);
-        seen_properties[item] = true;
-      }
-    }
-    replacer = property_list;
-  }
-  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 = MathMax(0, MathMin(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 InternalArray(), "", 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
-]);
-
-// -------------------------------------------------------------------
-// JSON Builtins
-
-function JsonSerializeAdapter(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(), "", "");
-}
-
-%InstallToContext(["json_serialize_adapter", JsonSerializeAdapter]);
-
-})