Revert of Revert of Hook up more import/exports in natives. (patchset #1 id:1...

Revert of Revert of Hook up more import/exports in natives. (patchset #1 id:1 of https://codereview.chromium.org/1154743003/)

Reason for revert:
Unrelated failure that was uncovered by this CL has been fixed (https://codereview.chromium.org/1152243002/)

Original issue's description:
> Revert of Hook up more import/exports in natives. (patchset #3 id:40001 of https://codereview.chromium.org/1154483002/)
>
> Reason for revert:
> [Sheriff] Speculative revert for gc stress failures:
> http://build.chromium.org/p/client.v8/builders/V8%20Linux64%20GC%20Stress%20-%20custom%20snapshot/builds/481
>
> Original issue's description:
> > Hook up more import/exports in natives.
> >
> > R=jkummerow@chromium.org
> >
> > Committed: https://crrev.com/7a918ac9658d11778f39593bfcc19d7c506defd9
> > Cr-Commit-Position: refs/heads/master@{#28573}
> >
> > Committed: https://crrev.com/e13a39dd7f4062898709d7c68900677df0513995
> > Cr-Commit-Position: refs/heads/master@{#28578}
>
> TBR=jkummerow@chromium.org,erik.corry@gmail.com,yangguo@chromium.org
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
>
> Committed: https://crrev.com/eb0024d1dbdda5f51b006dd54887404ee6c5cbfc
> Cr-Commit-Position: refs/heads/master@{#28584}

TBR=jkummerow@chromium.org,erik.corry@gmail.com,machenbach@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

Review URL: https://codereview.chromium.org/1149773003

Cr-Commit-Position: refs/heads/master@{#28608}

src/array-iterator.js

@@ -2,7 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-var $iteratorCreateResultObject;
 var $arrayValues;
 
 (function(global, utils) {
@@ -124,16 +123,16 @@ function ArrayKeys() {
 %FunctionSetPrototype(ArrayIterator, {__proto__: $iteratorPrototype});
 %FunctionSetInstanceClassName(ArrayIterator, 'Array Iterator');
 
-$installFunctions(ArrayIterator.prototype, DONT_ENUM, [
+utils.InstallFunctions(ArrayIterator.prototype, DONT_ENUM, [
   'next', ArrayIteratorNext
 ]);
-$setFunctionName(ArrayIteratorIterator, symbolIterator);
+utils.SetFunctionName(ArrayIteratorIterator, symbolIterator);
 %AddNamedProperty(ArrayIterator.prototype, symbolIterator,
                   ArrayIteratorIterator, DONT_ENUM);
 %AddNamedProperty(ArrayIterator.prototype, symbolToStringTag,
                   "Array Iterator", READ_ONLY | DONT_ENUM);
 
-$installFunctions(GlobalArray.prototype, DONT_ENUM, [
+utils.InstallFunctions(GlobalArray.prototype, DONT_ENUM, [
   // No 'values' since it breaks webcompat: http://crbug.com/409858
   'entries', ArrayEntries,
   'keys', ArrayKeys
@@ -152,7 +151,13 @@ endmacro
 
 TYPED_ARRAYS(EXTEND_TYPED_ARRAY)
 
-$iteratorCreateResultObject = CreateIteratorResultObject;
+// -------------------------------------------------------------------
+// Exports
+
+utils.Export(function(to) {
+  to.ArrayIteratorCreateResultObject = CreateIteratorResultObject;
+});
+
 $arrayValues = ArrayValues;
 
 })

src/array.js

@@ -3,22 +3,12 @@
 // found in the LICENSE file.
 
 var $arrayConcat;
-var $arrayJoin;
 var $arrayPush;
 var $arrayPop;
 var $arrayShift;
 var $arraySlice;
 var $arraySplice;
 var $arrayUnshift;
-var $innerArrayForEach;
-var $innerArrayEvery;
-var $innerArrayFilter;
-var $innerArrayIndexOf;
-var $innerArrayLastIndexOf;
-var $innerArrayMap;
-var $innerArrayReverse;
-var $innerArraySome;
-var $innerArraySort;
 
 (function(global, utils) {
 
@@ -33,10 +23,20 @@ var GlobalArray = global.Array;
 var InternalArray = utils.InternalArray;
 var InternalPackedArray = utils.InternalPackedArray;
 
+var Delete;
 var MathMin;
+var ObjectHasOwnProperty;
+var ObjectIsFrozen;
+var ObjectIsSealed;
+var ObjectToString;
 
 utils.Import(function(from) {
+  Delete = from.Delete;
   MathMin = from.MathMin;
+  ObjectHasOwnProperty = from.ObjectHasOwnProperty;
+  ObjectIsFrozen = from.ObjectIsFrozen;
+  ObjectIsSealed = from.ObjectIsSealed;
+  ObjectToString = from.ObjectToString;
 });
 
 // -------------------------------------------------------------------
@@ -392,7 +392,7 @@ function ArrayToString() {
     func = array.join;
   }
   if (!IS_SPEC_FUNCTION(func)) {
-    return %_CallFunction(array, $objectToString);
+    return %_CallFunction(array, ObjectToString);
   }
   return %_CallFunction(array, func);
 }
@@ -467,7 +467,7 @@ function ArrayPop() {
 
   n--;
   var value = array[n];
-  $delete(array, $toName(n), true);
+  Delete(array, $toName(n), true);
   array.length = n;
   return value;
 }
@@ -645,7 +645,7 @@ function ArrayShift() {
     return;
   }
 
-  if ($objectIsSealed(array)) throw MakeTypeError(kArrayFunctionsOnSealed);
+  if (ObjectIsSealed(array)) throw MakeTypeError(kArrayFunctionsOnSealed);
 
   if (%IsObserved(array))
     return ObservedArrayShift.call(array, len);
@@ -696,7 +696,7 @@ function ArrayUnshift(arg1) {  // length == 1
   var num_arguments = %_ArgumentsLength();
 
   if (len > 0 && UseSparseVariant(array, len, IS_ARRAY(array), len) &&
-      !$objectIsSealed(array)) {
+      !ObjectIsSealed(array)) {
     SparseMove(array, 0, 0, len, num_arguments);
   } else {
     SimpleMove(array, 0, 0, len, num_arguments);
@@ -842,9 +842,9 @@ function ArraySplice(start, delete_count) {
   deleted_elements.length = del_count;
   var num_elements_to_add = num_arguments > 2 ? num_arguments - 2 : 0;
 
-  if (del_count != num_elements_to_add && $objectIsSealed(array)) {
+  if (del_count != num_elements_to_add && ObjectIsSealed(array)) {
     throw MakeTypeError(kArrayFunctionsOnSealed);
-  } else if (del_count > 0 && $objectIsFrozen(array)) {
+  } else if (del_count > 0 && ObjectIsFrozen(array)) {
     throw MakeTypeError(kArrayFunctionsOnFrozen);
   }
 
@@ -1582,7 +1582,7 @@ var unscopables = {
                   DONT_ENUM | READ_ONLY);
 
 // Set up non-enumerable functions on the Array object.
-$installFunctions(GlobalArray, DONT_ENUM, [
+utils.InstallFunctions(GlobalArray, DONT_ENUM, [
   "isArray", ArrayIsArray
 ]);
 
@@ -1603,7 +1603,7 @@ var getFunction = function(name, jsBuiltin, len) {
 // set their names.
 // Manipulate the length of some of the functions to meet
 // expectations set by ECMA-262 or Mozilla.
-$installFunctions(GlobalArray.prototype, DONT_ENUM, [
+utils.InstallFunctions(GlobalArray.prototype, DONT_ENUM, [
   "toString", getFunction("toString", ArrayToString),
   "toLocaleString", getFunction("toLocaleString", ArrayToLocaleString),
   "join", getFunction("join", ArrayJoin),
@@ -1632,7 +1632,7 @@ $installFunctions(GlobalArray.prototype, DONT_ENUM, [
 // The internal Array prototype doesn't need to be fancy, since it's never
 // exposed to user code.
 // Adding only the functions that are actually used.
-$setUpLockedPrototype(InternalArray, GlobalArray(), [
+utils.SetUpLockedPrototype(InternalArray, GlobalArray(), [
   "concat", getFunction("concat", ArrayConcatJS),
   "indexOf", getFunction("indexOf", ArrayIndexOf),
   "join", getFunction("join", ArrayJoin),
@@ -1642,15 +1642,30 @@ $setUpLockedPrototype(InternalArray, GlobalArray(), [
   "splice", getFunction("splice", ArraySplice)
 ]);
 
-$setUpLockedPrototype(InternalPackedArray, GlobalArray(), [
+utils.SetUpLockedPrototype(InternalPackedArray, GlobalArray(), [
   "join", getFunction("join", ArrayJoin),
   "pop", getFunction("pop", ArrayPop),
   "push", getFunction("push", ArrayPush),
   "shift", getFunction("shift", ArrayShift)
 ]);
 
+// -------------------------------------------------------------------
+// Exports
+
+utils.Export(function(to) {
+  to.ArrayJoin = ArrayJoin;
+  to.InnerArrayEvery = InnerArrayEvery;
+  to.InnerArrayFilter = InnerArrayFilter;
+  to.InnerArrayForEach = InnerArrayForEach;
+  to.InnerArrayIndexOf = InnerArrayIndexOf;
+  to.InnerArrayLastIndexOf = InnerArrayLastIndexOf;
+  to.InnerArrayMap = InnerArrayMap;
+  to.InnerArrayReverse = InnerArrayReverse;
+  to.InnerArraySome = InnerArraySome;
+  to.InnerArraySort = InnerArraySort;
+});
+
 $arrayConcat = ArrayConcatJS;
-$arrayJoin = ArrayJoin;
 $arrayPush = ArrayPush;
 $arrayPop = ArrayPop;
 $arrayShift = ArrayShift;
@@ -1658,14 +1673,4 @@ $arraySlice = ArraySlice;
 $arraySplice = ArraySplice;
 $arrayUnshift = ArrayUnshift;
 
-$innerArrayEvery = InnerArrayEvery;
-$innerArrayFilter = InnerArrayFilter;
-$innerArrayForEach = InnerArrayForEach;
-$innerArrayIndexOf = InnerArrayIndexOf;
-$innerArrayLastIndexOf = InnerArrayLastIndexOf;
-$innerArrayMap = InnerArrayMap;
-$innerArrayReverse = InnerArrayReverse;
-$innerArraySome = InnerArraySome;
-$innerArraySort = InnerArraySort;
-
 });

src/arraybuffer.js

@@ -8,7 +8,6 @@
 
 %CheckIsBootstrapping();
 
-
 // -------------------------------------------------------------------
 // Imports
 
@@ -95,13 +94,13 @@ function ArrayBufferIsViewJS(obj) {
 %AddNamedProperty(GlobalArrayBuffer.prototype,
     symbolToStringTag, "ArrayBuffer", DONT_ENUM | READ_ONLY);
 
-$installGetter(GlobalArrayBuffer.prototype, "byteLength", ArrayBufferGetByteLen);
+utils.InstallGetter(GlobalArrayBuffer.prototype, "byteLength", ArrayBufferGetByteLen);
 
-$installFunctions(GlobalArrayBuffer, DONT_ENUM, [
+utils.InstallFunctions(GlobalArrayBuffer, DONT_ENUM, [
   "isView", ArrayBufferIsViewJS
 ]);
 
-$installFunctions(GlobalArrayBuffer.prototype, DONT_ENUM, [
+utils.InstallFunctions(GlobalArrayBuffer.prototype, DONT_ENUM, [
   "slice", ArrayBufferSlice
 ]);
 

src/bootstrapper.cc

@@ -1530,7 +1530,8 @@ bool Genesis::CallUtilsFunction(Isolate* isolate, const char* name) {
       isolate->factory()->NewStringFromAsciiChecked(name);
   Handle<Object> fun = JSObject::GetDataProperty(utils, name_string);
   Handle<Object> receiver = isolate->factory()->undefined_value();
-  return !Execution::Call(isolate, fun, receiver, 0, NULL).is_null();
+  Handle<Object> args[] = {utils};
+  return !Execution::Call(isolate, fun, receiver, 1, args).is_null();
 }
 
 
@@ -2446,6 +2447,8 @@ bool Genesis::InstallExperimentalNatives() {
 #undef INSTALL_EXPERIMENTAL_NATIVES
   }
 
+  CallUtilsFunction(isolate(), "PostExperimentals");
+
   InstallExperimentalNativeFunctions();
   return true;
 }

src/collection-iterator.js

@@ -70,14 +70,14 @@ function SetValues() {
 %SetCode(SetIterator, SetIteratorConstructor);
 %FunctionSetPrototype(SetIterator, {__proto__: $iteratorPrototype});
 %FunctionSetInstanceClassName(SetIterator, 'Set Iterator');
-$installFunctions(SetIterator.prototype, DONT_ENUM, [
+utils.InstallFunctions(SetIterator.prototype, DONT_ENUM, [
   'next', SetIteratorNextJS
 ]);
 
 %AddNamedProperty(SetIterator.prototype, symbolToStringTag,
     "Set Iterator", READ_ONLY | DONT_ENUM);
 
-$installFunctions(GlobalSet.prototype, DONT_ENUM, [
+utils.InstallFunctions(GlobalSet.prototype, DONT_ENUM, [
   'entries', SetEntries,
   'keys', SetValues,
   'values', SetValues
@@ -152,7 +152,7 @@ function MapValues() {
 %SetCode(MapIterator, MapIteratorConstructor);
 %FunctionSetPrototype(MapIterator, {__proto__: $iteratorPrototype});
 %FunctionSetInstanceClassName(MapIterator, 'Map Iterator');
-$installFunctions(MapIterator.prototype, DONT_ENUM, [
+utils.InstallFunctions(MapIterator.prototype, DONT_ENUM, [
   'next', MapIteratorNextJS
 ]);
 
@@ -160,7 +160,7 @@ $installFunctions(MapIterator.prototype, DONT_ENUM, [
     "Map Iterator", READ_ONLY | DONT_ENUM);
 
 
-$installFunctions(GlobalMap.prototype, DONT_ENUM, [
+utils.InstallFunctions(GlobalMap.prototype, DONT_ENUM, [
   'entries', MapEntries,
   'keys', MapKeys,
   'values', MapValues

src/collection.js

@@ -8,10 +8,19 @@
 
 %CheckIsBootstrapping();
 
+// -------------------------------------------------------------------
+// Imports
+
 var GlobalMap = global.Map;
 var GlobalObject = global.Object;
 var GlobalSet = global.Set;
 
+var NumberIsNaN;
+
+utils.Import(function(from) {
+  NumberIsNaN = from.NumberIsNaN;
+});
+
 // -------------------------------------------------------------------
 
 function HashToEntry(table, hash, numBuckets) {
@@ -22,7 +31,7 @@ function HashToEntry(table, hash, numBuckets) {
 
 
 function SetFindEntry(table, numBuckets, key, hash) {
-  var keyIsNaN = $numberIsNaN(key);
+  var keyIsNaN = NumberIsNaN(key);
   for (var entry = HashToEntry(table, hash, numBuckets);
        entry !== NOT_FOUND;
        entry = ORDERED_HASH_SET_CHAIN_AT(table, entry, numBuckets)) {
@@ -30,7 +39,7 @@ function SetFindEntry(table, numBuckets, key, hash) {
     if (key === candidate) {
       return entry;
     }
-    if (keyIsNaN && $numberIsNaN(candidate)) {
+    if (keyIsNaN && NumberIsNaN(candidate)) {
       return entry;
     }
   }
@@ -40,7 +49,7 @@ function SetFindEntry(table, numBuckets, key, hash) {
 
 
 function MapFindEntry(table, numBuckets, key, hash) {
-  var keyIsNaN = $numberIsNaN(key);
+  var keyIsNaN = NumberIsNaN(key);
   for (var entry = HashToEntry(table, hash, numBuckets);
        entry !== NOT_FOUND;
        entry = ORDERED_HASH_MAP_CHAIN_AT(table, entry, numBuckets)) {
@@ -48,7 +57,7 @@ function MapFindEntry(table, numBuckets, key, hash) {
     if (key === candidate) {
       return entry;
     }
-    if (keyIsNaN && $numberIsNaN(candidate)) {
+    if (keyIsNaN && NumberIsNaN(candidate)) {
       return entry;
     }
   }
@@ -239,8 +248,8 @@ function SetForEach(f, receiver) {
 %FunctionSetLength(SetForEach, 1);
 
 // Set up the non-enumerable functions on the Set prototype object.
-$installGetter(GlobalSet.prototype, "size", SetGetSize);
-$installFunctions(GlobalSet.prototype, DONT_ENUM, [
+utils.InstallGetter(GlobalSet.prototype, "size", SetGetSize);
+utils.InstallFunctions(GlobalSet.prototype, DONT_ENUM, [
   "add", SetAdd,
   "has", SetHas,
   "delete", SetDelete,
@@ -427,8 +436,8 @@ function MapForEach(f, receiver) {
 %FunctionSetLength(MapForEach, 1);
 
 // Set up the non-enumerable functions on the Map prototype object.
-$installGetter(GlobalMap.prototype, "size", MapGetSize);
-$installFunctions(GlobalMap.prototype, DONT_ENUM, [
+utils.InstallGetter(GlobalMap.prototype, "size", MapGetSize);
+utils.InstallFunctions(GlobalMap.prototype, DONT_ENUM, [
   "get", MapGet,
   "set", MapSet,
   "has", MapHas,

src/date.js

@@ -2,10 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// This file relies on the fact that the following declarations have been made
-// in v8natives.js:
-// var $isFinite = GlobalIsFinite;
-
 var $createDate;
 
 // -------------------------------------------------------------------
@@ -22,10 +18,12 @@ var $createDate;
 var GlobalDate = global.Date;
 var InternalArray = utils.InternalArray;
 
+var IsFinite;
 var MathAbs;
 var MathFloor;
 
 utils.Import(function(from) {
+  IsFinite = from.IsFinite;
   MathAbs = from.MathAbs;
   MathFloor = from.MathFloor;
 });
@@ -60,10 +58,10 @@ function UTC(time) {
 
 // ECMA 262 - 15.9.1.11
 function MakeTime(hour, min, sec, ms) {
-  if (!$isFinite(hour)) return NAN;
-  if (!$isFinite(min)) return NAN;
-  if (!$isFinite(sec)) return NAN;
-  if (!$isFinite(ms)) return NAN;
+  if (!IsFinite(hour)) return NAN;
+  if (!IsFinite(min)) return NAN;
+  if (!IsFinite(sec)) return NAN;
+  if (!IsFinite(ms)) return NAN;
   return TO_INTEGER(hour) * msPerHour
       + TO_INTEGER(min) * msPerMinute
       + TO_INTEGER(sec) * msPerSecond
@@ -84,7 +82,7 @@ function TimeInYear(year) {
 //     MakeDay(2007, -33, 1) --> MakeDay(2004, 3, 1)
 //     MakeDay(2007, 14, -50) --> MakeDay(2007, 8, 11)
 function MakeDay(year, month, date) {
-  if (!$isFinite(year) || !$isFinite(month) || !$isFinite(date)) return NAN;
+  if (!IsFinite(year) || !IsFinite(month) || !IsFinite(date)) return NAN;
 
   // Convert to integer and map -0 to 0.
   year = TO_INTEGER_MAP_MINUS_ZERO(year);
@@ -116,7 +114,7 @@ function MakeDate(day, time) {
 
 // ECMA 262 - 15.9.1.14
 function TimeClip(time) {
-  if (!$isFinite(time)) return NAN;
+  if (!IsFinite(time)) return NAN;
   if (MathAbs(time) > MAX_TIME_MS) return NAN;
   return TO_INTEGER(time);
 }
@@ -774,7 +772,7 @@ function CreateDate(time) {
 %FunctionSetPrototype(GlobalDate, new GlobalDate(NAN));
 
 // Set up non-enumerable properties of the Date object itself.
-$installFunctions(GlobalDate, DONT_ENUM, [
+utils.InstallFunctions(GlobalDate, DONT_ENUM, [
   "UTC", DateUTC,
   "parse", DateParse,
   "now", DateNow
@@ -785,7 +783,7 @@ $installFunctions(GlobalDate, DONT_ENUM, [
 
 // Set up non-enumerable functions of the Date prototype object and
 // set their names.
-$installFunctions(GlobalDate.prototype, DONT_ENUM, [
+utils.InstallFunctions(GlobalDate.prototype, DONT_ENUM, [
   "toString", DateToString,
   "toDateString", DateToDateString,
   "toTimeString", DateToTimeString,

src/generator.js

@@ -8,8 +8,17 @@
 
 %CheckIsBootstrapping();
 
+// -------------------------------------------------------------------
+// Imports
+
 var GlobalFunction = global.Function;
 
+var NewFunctionString;
+
+utils.Import(function(from) {
+  NewFunctionString = from.NewFunctionString;
+});
+
 // ----------------------------------------------------------------------------
 
 // Generator functions and objects are specified by ES6, sections 15.19.3 and
@@ -67,7 +76,7 @@ function GeneratorObjectThrow(exn) {
 
 
 function GeneratorFunctionConstructor(arg1) {  // length == 1
-  var source = $newFunctionString(arguments, 'function*');
+  var source = NewFunctionString(arguments, 'function*');
   var global_proxy = %GlobalProxy(GeneratorFunctionConstructor);
   // Compile the string in the constructor and not a helper so that errors
   // appear to come from here.
@@ -85,10 +94,10 @@ function GeneratorFunctionConstructor(arg1) {  // length == 1
 
 // Set up non-enumerable functions on the generator prototype object.
 var GeneratorObjectPrototype = GeneratorFunctionPrototype.prototype;
-$installFunctions(GeneratorObjectPrototype,
-                 DONT_ENUM,
-                 ["next", GeneratorObjectNext,
-                  "throw", GeneratorObjectThrow]);
+utils.InstallFunctions(GeneratorObjectPrototype,
+                       DONT_ENUM,
+                      ["next", GeneratorObjectNext,
+                       "throw", GeneratorObjectThrow]);
 
 %AddNamedProperty(GeneratorObjectPrototype, "constructor",
     GeneratorFunctionPrototype, DONT_ENUM | READ_ONLY);

src/harmony-array-includes.js

@@ -52,7 +52,7 @@ function ArrayIncludes(searchElement, fromIndex) {
 %FunctionSetLength(ArrayIncludes, 1);
 
 // Set up the non-enumerable functions on the Array prototype object.
-$installFunctions(GlobalArray.prototype, DONT_ENUM, [
+utils.InstallFunctions(GlobalArray.prototype, DONT_ENUM, [
   "includes", ArrayIncludes
 ]);
 

src/harmony-array.js

@@ -2,12 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-var $innerArrayCopyWithin;
-var $innerArrayFill;
-var $innerArrayFind;
-var $innerArrayFindIndex;
-var $arrayFrom;
-
 (function(global, utils) {
 
 'use strict';
@@ -20,12 +14,18 @@ var $arrayFrom;
 var GlobalArray = global.Array;
 var GlobalSymbol = global.Symbol;
 
+var GetIterator;
+var GetMethod;
 var MathMax;
 var MathMin;
+var ObjectIsFrozen;
 
 utils.Import(function(from) {
+  GetIterator = from.GetIterator;
+  GetMethod = from.GetMethod;
   MathMax = from.MathMax;
   MathMin = from.MathMin;
+  ObjectIsFrozen = from.ObjectIsFrozen;
 });
 
 // -------------------------------------------------------------------
@@ -76,7 +76,6 @@ function InnerArrayCopyWithin(target, start, end, array, length) {
 
   return array;
 }
-$innerArrayCopyWithin = InnerArrayCopyWithin;
 
 // ES6 draft 03-17-15, section 22.1.3.3
 function ArrayCopyWithin(target, start, end) {
@@ -112,7 +111,6 @@ function InnerArrayFind(predicate, thisArg, array, length) {
 
   return;
 }
-$innerArrayFind = InnerArrayFind;
 
 // ES6 draft 07-15-13, section 15.4.3.23
 function ArrayFind(predicate, thisArg) {
@@ -148,7 +146,6 @@ function InnerArrayFindIndex(predicate, thisArg, array, length) {
 
   return -1;
 }
-$innerArrayFindIndex = InnerArrayFindIndex;
 
 // ES6 draft 07-15-13, section 15.4.3.24
 function ArrayFindIndex(predicate, thisArg) {
@@ -179,7 +176,7 @@ function InnerArrayFill(value, start, end, array, length) {
     if (end > length) end = length;
   }
 
-  if ((end - i) > 0 && $objectIsFrozen(array)) {
+  if ((end - i) > 0 && ObjectIsFrozen(array)) {
     throw MakeTypeError(kArrayFunctionsOnFrozen);
   }
 
@@ -187,7 +184,6 @@ function InnerArrayFill(value, start, end, array, length) {
     array[i] = value;
   return array;
 }
-$innerArrayFill = InnerArrayFill;
 
 // ES6, draft 04-05-14, section 22.1.3.6
 function ArrayFill(value, start, end) {
@@ -216,7 +212,7 @@ function ArrayFrom(arrayLike, mapfn, receiver) {
     }
   }
 
-  var iterable = $getMethod(items, symbolIterator);
+  var iterable = GetMethod(items, symbolIterator);
   var k;
   var result;
   var mappedValue;
@@ -225,7 +221,7 @@ function ArrayFrom(arrayLike, mapfn, receiver) {
   if (!IS_UNDEFINED(iterable)) {
     result = %IsConstructor(this) ? new this() : [];
 
-    var iterator = $getIterator(items, iterable);
+    var iterator = GetIterator(items, iterable);
 
     k = 0;
     while (true) {
@@ -266,7 +262,6 @@ function ArrayFrom(arrayLike, mapfn, receiver) {
     return result;
   }
 }
-$arrayFrom = ArrayFrom;
 
 // ES6, draft 05-22-14, section 22.1.2.3
 function ArrayOf() {
@@ -283,7 +278,7 @@ function ArrayOf() {
 
 // -------------------------------------------------------------------
 
-$installConstants(GlobalSymbol, [
+utils.InstallConstants(GlobalSymbol, [
   // TODO(dslomov, caitp): Move to symbol.js when shipping
   "isConcatSpreadable", symbolIsConcatSpreadable
 ]);
@@ -295,17 +290,28 @@ $installConstants(GlobalSymbol, [
 %FunctionSetLength(ArrayFindIndex, 1);
 
 // Set up non-enumerable functions on the Array object.
-$installFunctions(GlobalArray, DONT_ENUM, [
+utils.InstallFunctions(GlobalArray, DONT_ENUM, [
   "from", ArrayFrom,
   "of", ArrayOf
 ]);
 
 // Set up the non-enumerable functions on the Array prototype object.
-$installFunctions(GlobalArray.prototype, DONT_ENUM, [
+utils.InstallFunctions(GlobalArray.prototype, DONT_ENUM, [
   "copyWithin", ArrayCopyWithin,
   "find", ArrayFind,
   "findIndex", ArrayFindIndex,
   "fill", ArrayFill
 ]);
 
+// -------------------------------------------------------------------
+// Exports
+
+utils.Export(function(to) {
+  to.ArrayFrom = ArrayFrom;
+  to.InnerArrayCopyWithin = InnerArrayCopyWithin;
+  to.InnerArrayFill = InnerArrayFill;
+  to.InnerArrayFind = InnerArrayFind;
+  to.InnerArrayFindIndex = InnerArrayFindIndex;
+});
+
 })

src/harmony-object.js

@@ -9,8 +9,19 @@
 
 %CheckIsBootstrapping();
 
+// -------------------------------------------------------------------
+// Imports
+
 var GlobalObject = global.Object;
 
+var OwnPropertyKeys;
+
+utils.Import(function(from) {
+  OwnPropertyKeys = from.OwnPropertyKeys;
+});
+
+// -------------------------------------------------------------------
+
 // ES6, draft 04-03-15, section 19.1.2.1
 function ObjectAssign(target, sources) {
   var to = TO_OBJECT_INLINE(target);
@@ -24,7 +35,7 @@ function ObjectAssign(target, sources) {
     }
 
     var from = TO_OBJECT_INLINE(nextSource);
-    var keys = $ownPropertyKeys(from);
+    var keys = OwnPropertyKeys(from);
     var len = keys.length;
 
     for (var j = 0; j < len; ++j) {
@@ -39,7 +50,7 @@ function ObjectAssign(target, sources) {
 }
 
 // Set up non-enumerable functions on the Object object.
-$installFunctions(GlobalObject, DONT_ENUM, [
+utils.InstallFunctions(GlobalObject, DONT_ENUM, [
   "assign", ObjectAssign
 ]);
 

src/harmony-reflect.js

@@ -10,7 +10,7 @@
 
 var GlobalReflect = global.Reflect;
 
-$installFunctions(GlobalReflect, DONT_ENUM, [
+utils.InstallFunctions(GlobalReflect, DONT_ENUM, [
   "apply", $reflectApply,
   "construct", $reflectConstruct
 ]);

src/harmony-tostring.js

@@ -10,7 +10,7 @@
 
 var GlobalSymbol = global.Symbol;
 
-$installConstants(GlobalSymbol, [
+utils.InstallConstants(GlobalSymbol, [
    // TODO(dslomov, caitp): Move to symbol.js when shipping
    "toStringTag", symbolToStringTag
 ]);

src/harmony-typedarray.js

@@ -8,6 +8,9 @@
 
 %CheckIsBootstrapping();
 
+// -------------------------------------------------------------------
+// Imports
+
 macro TYPED_ARRAYS(FUNCTION)
 // arrayIds below should be synchronized with Runtime_TypedArrayInitialize.
 FUNCTION(Uint8Array)
@@ -28,6 +31,40 @@ endmacro
 TYPED_ARRAYS(DECLARE_GLOBALS)
 DECLARE_GLOBALS(Array)
 
+var ArrayFrom;
+var InnerArrayCopyWithin;
+var InnerArrayEvery;
+var InnerArrayFill;
+var InnerArrayFilter;
+var InnerArrayFind;
+var InnerArrayFindIndex;
+var InnerArrayForEach;
+var InnerArrayIndexOf;
+var InnerArrayLastIndexOf;
+var InnerArrayMap;
+var InnerArrayReverse;
+var InnerArraySome;
+var InnerArraySort;
+var IsNaN;
+
+utils.Import(function(from) {
+  ArrayFrom = from.ArrayFrom;
+  InnerArrayCopyWithin = from.InnerArrayCopyWithin;
+  InnerArrayEvery = from.InnerArrayEvery;
+  InnerArrayFill = from.InnerArrayFill;
+  InnerArrayFilter = from.InnerArrayFilter;
+  InnerArrayFind = from.InnerArrayFind;
+  InnerArrayFindIndex = from.InnerArrayFindIndex;
+  InnerArrayForEach = from.InnerArrayForEach;
+  InnerArrayIndexOf = from.InnerArrayIndexOf;
+  InnerArrayLastIndexOf = from.InnerArrayLastIndexOf;
+  InnerArrayMap = from.InnerArrayMap;
+  InnerArrayReverse = from.InnerArrayReverse;
+  InnerArraySome = from.InnerArraySome;
+  InnerArraySort = from.InnerArraySort;
+  IsNaN = from.IsNaN;
+});
+
 // -------------------------------------------------------------------
 
 function ConstructTypedArray(constructor, array) {
@@ -58,7 +95,7 @@ function TypedArrayCopyWithin(target, start, end) {
   var length = %_TypedArrayGetLength(this);
 
   // TODO(littledan): Replace with a memcpy for better performance
-  return $innerArrayCopyWithin(target, start, end, this, length);
+  return InnerArrayCopyWithin(target, start, end, this, length);
 }
 %FunctionSetLength(TypedArrayCopyWithin, 2);
 
@@ -68,7 +105,7 @@ function TypedArrayEvery(f, receiver) {
 
   var length = %_TypedArrayGetLength(this);
 
-  return $innerArrayEvery(f, receiver, this, length);
+  return InnerArrayEvery(f, receiver, this, length);
 }
 %FunctionSetLength(TypedArrayEvery, 1);
 
@@ -78,7 +115,7 @@ function TypedArrayForEach(f, receiver) {
 
   var length = %_TypedArrayGetLength(this);
 
-  $innerArrayForEach(f, receiver, this, length);
+  InnerArrayForEach(f, receiver, this, length);
 }
 %FunctionSetLength(TypedArrayForEach, 1);
 
@@ -88,7 +125,7 @@ function TypedArrayFill(value, start, end) {
 
   var length = %_TypedArrayGetLength(this);
 
-  return $innerArrayFill(value, start, end, this, length);
+  return InnerArrayFill(value, start, end, this, length);
 }
 %FunctionSetLength(TypedArrayFill, 1);
 
@@ -97,7 +134,7 @@ function TypedArrayFilter(predicate, thisArg) {
   if (!%IsTypedArray(this)) throw MakeTypeError(kNotTypedArray);
 
   var length = %_TypedArrayGetLength(this);
-  var array = $innerArrayFilter(predicate, thisArg, this, length);
+  var array = InnerArrayFilter(predicate, thisArg, this, length);
   return ConstructTypedArrayLike(this, array);
 }
 %FunctionSetLength(TypedArrayFilter, 1);
@@ -108,7 +145,7 @@ function TypedArrayFind(predicate, thisArg) {
 
   var length = %_TypedArrayGetLength(this);
 
-  return $innerArrayFind(predicate, thisArg, this, length);
+  return InnerArrayFind(predicate, thisArg, this, length);
 }
 %FunctionSetLength(TypedArrayFind, 1);
 
@@ -118,7 +155,7 @@ function TypedArrayFindIndex(predicate, thisArg) {
 
   var length = %_TypedArrayGetLength(this);
 
-  return $innerArrayFindIndex(predicate, thisArg, this, length);
+  return InnerArrayFindIndex(predicate, thisArg, this, length);
 }
 %FunctionSetLength(TypedArrayFindIndex, 1);
 
@@ -128,15 +165,15 @@ function TypedArrayReverse() {
 
   var length = %_TypedArrayGetLength(this);
 
-  return $innerArrayReverse(this, length);
+  return InnerArrayReverse(this, length);
 }
 
 
 function TypedArrayComparefn(x, y) {
-  if ($isNaN(x) && $isNaN(y)) {
-    return $isNaN(y) ? 0 : 1;
+  if (IsNaN(x) && IsNaN(y)) {
+    return IsNaN(y) ? 0 : 1;
   }
-  if ($isNaN(x)) {
+  if (IsNaN(x)) {
     return 1;
   }
   if (x === 0 && x === y) {
@@ -162,7 +199,7 @@ function TypedArraySort(comparefn) {
     comparefn = TypedArrayComparefn;
   }
 
-  return %_CallFunction(this, length, comparefn, $innerArraySort);
+  return %_CallFunction(this, length, comparefn, InnerArraySort);
 }
 
 
@@ -172,7 +209,7 @@ function TypedArrayIndexOf(element, index) {
 
   var length = %_TypedArrayGetLength(this);
 
-  return %_CallFunction(this, element, index, length, $innerArrayIndexOf);
+  return %_CallFunction(this, element, index, length, InnerArrayIndexOf);
 }
 %FunctionSetLength(TypedArrayIndexOf, 1);
 
@@ -184,7 +221,7 @@ function TypedArrayLastIndexOf(element, index) {
   var length = %_TypedArrayGetLength(this);
 
   return %_CallFunction(this, element, index, length,
-                        %_ArgumentsLength(), $innerArrayLastIndexOf);
+                        %_ArgumentsLength(), InnerArrayLastIndexOf);
 }
 %FunctionSetLength(TypedArrayLastIndexOf, 1);
 
@@ -196,7 +233,7 @@ function TypedArrayMap(predicate, thisArg) {
   // TODO(littledan): Preallocate rather than making an intermediate
   // InternalArray, for better performance.
   var length = %_TypedArrayGetLength(this);
-  var array = $innerArrayMap(predicate, thisArg, this, length);
+  var array = InnerArrayMap(predicate, thisArg, this, length);
   return ConstructTypedArrayLike(this, array);
 }
 %FunctionSetLength(TypedArrayMap, 1);
@@ -208,7 +245,7 @@ function TypedArraySome(f, receiver) {
 
   var length = %_TypedArrayGetLength(this);
 
-  return $innerArraySome(f, receiver, this, length);
+  return InnerArraySome(f, receiver, this, length);
 }
 %FunctionSetLength(TypedArraySome, 1);
 
@@ -227,7 +264,7 @@ function TypedArrayOf() {
 function TypedArrayFrom(source, mapfn, thisArg) {
   // TODO(littledan): Investigate if there is a receiver which could be
   // faster to accumulate on than Array, e.g., a TypedVector.
-  var array = %_CallFunction(GlobalArray, source, mapfn, thisArg, $arrayFrom);
+  var array = %_CallFunction(GlobalArray, source, mapfn, thisArg, ArrayFrom);
   return ConstructTypedArray(this, array);
 }
 %FunctionSetLength(TypedArrayFrom, 1);
@@ -235,13 +272,13 @@ function TypedArrayFrom(source, mapfn, thisArg) {
 // TODO(littledan): Fix the TypedArray proto chain (bug v8:4085).
 macro EXTEND_TYPED_ARRAY(NAME)
   // Set up non-enumerable functions on the object.
-  $installFunctions(GlobalNAME, DONT_ENUM | DONT_DELETE | READ_ONLY, [
+  utils.InstallFunctions(GlobalNAME, DONT_ENUM | DONT_DELETE | READ_ONLY, [
     "from", TypedArrayFrom,
     "of", TypedArrayOf
   ]);
 
   // Set up non-enumerable functions on the prototype object.
-  $installFunctions(GlobalNAME.prototype, DONT_ENUM, [
+  utils.InstallFunctions(GlobalNAME.prototype, DONT_ENUM, [
     "copyWithin", TypedArrayCopyWithin,
     "every", TypedArrayEvery,
     "fill", TypedArrayFill,

src/iterator-prototype.js

@@ -15,7 +15,7 @@ var $iteratorPrototype;
     return this;
   }
 
-  $setFunctionName(IteratorPrototypeIterator, symbolIterator);
+  utils.SetFunctionName(IteratorPrototypeIterator, symbolIterator);
   %AddNamedProperty($iteratorPrototype, symbolIterator,
       IteratorPrototypeIterator, DONT_ENUM);
 })

src/json.js

@@ -18,10 +18,12 @@ var InternalArray = utils.InternalArray;
 
 var MathMax;
 var MathMin;
+var ObjectHasOwnProperty;
 
 utils.Import(function(from) {
   MathMax = from.MathMax;
   MathMin = from.MathMin;
+  ObjectHasOwnProperty = from.ObjectHasOwnProperty;
 });
 
 // -------------------------------------------------------------------
@@ -37,7 +39,7 @@ function Revive(holder, name, reviver) {
       }
     } else {
       for (var p in val) {
-        if (%_CallFunction(val, p, $objectHasOwnProperty)) {
+        if (HAS_OWN_PROPERTY(val, p)) {
           var newElement = Revive(val, p, reviver);
           if (IS_UNDEFINED(newElement)) {
             delete val[p];
@@ -99,7 +101,7 @@ function SerializeObject(value, replacer, stack, indent, gap) {
   if (IS_ARRAY(replacer)) {
     var length = replacer.length;
     for (var i = 0; i < length; i++) {
-      if (%_CallFunction(replacer, i, $objectHasOwnProperty)) {
+      if (HAS_OWN_PROPERTY(replacer, i)) {
         var p = replacer[i];
         var strP = JSONSerialize(p, value, replacer, stack, indent, gap);
         if (!IS_UNDEFINED(strP)) {
@@ -112,7 +114,7 @@ function SerializeObject(value, replacer, stack, indent, gap) {
     }
   } else {
     for (var p in value) {
-      if (%_CallFunction(value, p, $objectHasOwnProperty)) {
+      if (HAS_OWN_PROPERTY(value, p)) {
         var strP = JSONSerialize(p, value, replacer, stack, indent, gap);
         if (!IS_UNDEFINED(strP)) {
           var member = %QuoteJSONString(p) + ":";
@@ -232,7 +234,7 @@ function JSONStringify(value, replacer, space) {
 %AddNamedProperty(GlobalJSON, symbolToStringTag, "JSON", READ_ONLY | DONT_ENUM);
 
 // Set up non-enumerable properties of the JSON object.
-$installFunctions(GlobalJSON, DONT_ENUM, [
+utils.InstallFunctions(GlobalJSON, DONT_ENUM, [
   "parse", JSONParse,
   "stringify", JSONStringify
 ]);

src/macros.py

@@ -154,7 +154,7 @@ macro TO_STRING_INLINE(arg) = (IS_STRING(%IS_VAR(arg)) ? arg : $nonStringToStrin
 macro TO_NUMBER_INLINE(arg) = (IS_NUMBER(%IS_VAR(arg)) ? arg : $nonNumberToNumber(arg));
 macro TO_OBJECT_INLINE(arg) = (IS_SPEC_OBJECT(%IS_VAR(arg)) ? arg : $toObject(arg));
 macro JSON_NUMBER_TO_STRING(arg) = ((%_IsSmi(%IS_VAR(arg)) || arg - arg == 0) ? %_NumberToString(arg) : "null");
-macro HAS_OWN_PROPERTY(arg, index) = (%_CallFunction(arg, index, $objectHasOwnProperty));
+macro HAS_OWN_PROPERTY(arg, index) = (%_CallFunction(arg, index, ObjectHasOwnProperty));
 macro SHOULD_CREATE_WRAPPER(functionName, receiver) = (!IS_SPEC_OBJECT(receiver) && %IsSloppyModeFunction(functionName));
 macro HAS_INDEX(array, index, is_array) = ((is_array && %_HasFastPackedElements(%IS_VAR(array))) ? (index < array.length) : (index in array));
 

src/math.js

@@ -292,7 +292,7 @@ var Math = new MathConstructor();
 %AddNamedProperty(Math, symbolToStringTag, "Math", READ_ONLY | DONT_ENUM);
 
 // Set up math constants.
-$installConstants(Math, [
+utils.InstallConstants(Math, [
   // ECMA-262, section 15.8.1.1.
   "E", 2.7182818284590452354,
   // ECMA-262, section 15.8.1.2.
@@ -309,7 +309,7 @@ $installConstants(Math, [
 
 // Set up non-enumerable functions of the Math object and
 // set their names.
-$installFunctions(Math, DONT_ENUM, [
+utils.InstallFunctions(Math, DONT_ENUM, [
   "random", MathRandom,
   "abs", MathAbs,
   "acos", MathAcosJS,

src/messages.js

@@ -27,9 +27,6 @@ var MakeReferenceError;
 var MakeSyntaxError;
 var MakeTypeError;
 var MakeURIError;
-var MakeReferenceErrorEmbedded;
-var MakeSyntaxErrorEmbedded;
-var MakeTypeErrorEmbedded;
 
 (function(global, utils) {
 
@@ -40,12 +37,17 @@ var MakeTypeErrorEmbedded;
 
 var GlobalObject = global.Object;
 var InternalArray = utils.InternalArray;
+var ObjectDefineProperty = utils.ObjectDefineProperty;
 
+var ArrayJoin;
+var ObjectToString;
 var StringCharAt;
 var StringIndexOf;
 var StringSubstring;
 
 utils.Import(function(from) {
+  ArrayJoin = from.ArrayJoin;
+  ObjectToString = from.ObjectToString;
   StringCharAt = from.StringCharAt;
   StringIndexOf = from.StringIndexOf;
   StringSubstring = from.StringSubstring;
@@ -85,7 +87,7 @@ function NoSideEffectToString(obj) {
   }
   if (IS_SYMBOL(obj)) return %_CallFunction(obj, $symbolToString);
   if (IS_OBJECT(obj)
-      && %GetDataProperty(obj, "toString") === $objectToString) {
+      && %GetDataProperty(obj, "toString") === ObjectToString) {
     var constructor = %GetDataProperty(obj, "constructor");
     if (typeof constructor == "function") {
       var constructorName = constructor.name;
@@ -137,7 +139,7 @@ function ToStringCheckErrorObject(obj) {
 
 
 function ToDetailString(obj) {
-  if (obj != null && IS_OBJECT(obj) && obj.toString === $objectToString) {
+  if (obj != null && IS_OBJECT(obj) && obj.toString === ObjectToString) {
     var constructor = obj.constructor;
     if (typeof constructor == "function") {
       var constructorName = constructor.name;
@@ -409,7 +411,7 @@ function ScriptNameOrSourceURL() {
 }
 
 
-$setUpLockedPrototype(Script, [
+utils.SetUpLockedPrototype(Script, [
     "source",
     "name",
     "source_url",
@@ -473,7 +475,7 @@ function SourceLocationSourceText() {
 }
 
 
-$setUpLockedPrototype(SourceLocation,
+utils.SetUpLockedPrototype(SourceLocation,
   ["script", "position", "line", "column", "start", "end"],
   ["sourceText", SourceLocationSourceText]
 );
@@ -517,7 +519,7 @@ function SourceSliceSourceText() {
                         StringSubstring);
 }
 
-$setUpLockedPrototype(SourceSlice,
+utils.SetUpLockedPrototype(SourceSlice,
   ["script", "from_line", "to_line", "from_position", "to_position"],
   ["sourceText", SourceSliceSourceText]
 );
@@ -715,7 +717,7 @@ function CallSiteToString() {
   return line;
 }
 
-$setUpLockedPrototype(CallSite, ["receiver", "fun", "pos"], [
+utils.SetUpLockedPrototype(CallSite, ["receiver", "fun", "pos"], [
   "getThis", CallSiteGetThis,
   "getTypeName", CallSiteGetTypeName,
   "isToplevel", CallSiteIsToplevel,
@@ -842,7 +844,7 @@ function FormatStackTrace(obj, raw_stack) {
     }
     lines.push("    at " + line);
   }
-  return %_CallFunction(lines, "\n", $arrayJoin);
+  return %_CallFunction(lines, "\n", ArrayJoin);
 }
 
 
@@ -902,13 +904,7 @@ var StackTraceSetter = function(v) {
 
 // Use a dummy function since we do not actually want to capture a stack trace
 // when constructing the initial Error prototytpes.
-var captureStackTrace = function captureStackTrace(obj, cons_opt) {
-  // Define accessors first, as this may fail and throw.
-  $objectDefineProperty(obj, 'stack', { get: StackTraceGetter,
-                                        set: StackTraceSetter,
-                                        configurable: true });
-  %CollectStackTrace(obj, cons_opt ? cons_opt : captureStackTrace);
-}
+var captureStackTrace = function() {};
 
 
 // Define special error type constructors.
@@ -963,9 +959,6 @@ GlobalSyntaxError = DefineError(global, function SyntaxError() { });
 GlobalTypeError = DefineError(global, function TypeError() { });
 GlobalURIError = DefineError(global, function URIError() { });
 
-
-GlobalError.captureStackTrace = captureStackTrace;
-
 %AddNamedProperty(GlobalError.prototype, 'message', '', DONT_ENUM);
 
 // Global list of error objects visited during ErrorToString. This is
@@ -1030,8 +1023,8 @@ function ErrorToString() {
   }
 }
 
-$installFunctions(GlobalError.prototype, DONT_ENUM,
-                  ['toString', ErrorToString]);
+utils.InstallFunctions(GlobalError.prototype, DONT_ENUM,
+                       ['toString', ErrorToString]);
 
 $errorToString = ErrorToString;
 $getStackTraceLine = GetStackTraceLine;
@@ -1077,10 +1070,22 @@ MakeURIError = function() {
   return MakeGenericError(GlobalURIError, kURIMalformed);
 }
 
-//Boilerplate for exceptions for stack overflows. Used from
-//Isolate::StackOverflow().
+// Boilerplate for exceptions for stack overflows. Used from
+// Isolate::StackOverflow().
 $stackOverflowBoilerplate = MakeRangeError(kStackOverflow);
 %DefineAccessorPropertyUnchecked($stackOverflowBoilerplate, 'stack',
-                                 StackTraceGetter, StackTraceSetter, DONT_ENUM);
+                                 StackTraceGetter, StackTraceSetter,
+                                 DONT_ENUM);
 
-})
+// Define actual captureStackTrace function after everything has been set up.
+captureStackTrace = function captureStackTrace(obj, cons_opt) {
+  // Define accessors first, as this may fail and throw.
+  ObjectDefineProperty(obj, 'stack', { get: StackTraceGetter,
+                                       set: StackTraceSetter,
+                                       configurable: true });
+  %CollectStackTrace(obj, cons_opt ? cons_opt : captureStackTrace);
+};
+
+GlobalError.captureStackTrace = captureStackTrace;
+
+});

src/object-observe.js

@@ -23,6 +23,14 @@ var GlobalArray = global.Array;
 var GlobalObject = global.Object;
 var InternalArray = utils.InternalArray;
 
+var ObjectFreeze;
+var ObjectIsFrozen;
+
+utils.Import(function(from) {
+  ObjectFreeze = from.ObjectFreeze;
+  ObjectIsFrozen = from.ObjectIsFrozen;
+});
+
 // -------------------------------------------------------------------
 
 // Overview:
@@ -380,7 +388,7 @@ function ObjectObserve(object, callback, acceptList) {
     throw MakeTypeError(kObserveGlobalProxy, "observe");
   if (!IS_SPEC_FUNCTION(callback))
     throw MakeTypeError(kObserveNonFunction, "observe");
-  if ($objectIsFrozen(callback))
+  if (ObjectIsFrozen(callback))
     throw MakeTypeError(kObserveCallbackFrozen);
 
   var objectObserveFn = %GetObjectContextObjectObserve(object);
@@ -473,7 +481,7 @@ function ObjectInfoEnqueueExternalChangeRecord(objectInfo, changeRecord, type) {
     %DefineDataPropertyUnchecked(
         newRecord, prop, changeRecord[prop], READ_ONLY + DONT_DELETE);
   }
-  $objectFreeze(newRecord);
+  ObjectFreeze(newRecord);
 
   ObjectInfoEnqueueInternalChangeRecord(objectInfo, newRecord);
 }
@@ -525,8 +533,8 @@ function EnqueueSpliceRecord(array, index, removed, addedCount) {
     addedCount: addedCount
   };
 
-  $objectFreeze(changeRecord);
-  $objectFreeze(changeRecord.removed);
+  ObjectFreeze(changeRecord);
+  ObjectFreeze(changeRecord.removed);
   ObjectInfoEnqueueInternalChangeRecord(objectInfo, changeRecord);
 }
 
@@ -550,7 +558,7 @@ function NotifyChange(type, object, name, oldValue) {
     };
   }
 
-  $objectFreeze(changeRecord);
+  ObjectFreeze(changeRecord);
   ObjectInfoEnqueueInternalChangeRecord(objectInfo, changeRecord);
 }
 
@@ -607,7 +615,7 @@ function ObjectGetNotifier(object) {
   if (%IsJSGlobalProxy(object))
     throw MakeTypeError(kObserveGlobalProxy, "getNotifier");
 
-  if ($objectIsFrozen(object)) return null;
+  if (ObjectIsFrozen(object)) return null;
 
   if (!%ObjectWasCreatedInCurrentOrigin(object)) return null;
 
@@ -665,17 +673,17 @@ function ObserveMicrotaskRunner() {
 
 // -------------------------------------------------------------------
 
-$installFunctions(GlobalObject, DONT_ENUM, [
+utils.InstallFunctions(GlobalObject, DONT_ENUM, [
   "deliverChangeRecords", ObjectDeliverChangeRecords,
   "getNotifier", ObjectGetNotifier,
   "observe", ObjectObserve,
   "unobserve", ObjectUnobserve
 ]);
-$installFunctions(GlobalArray, DONT_ENUM, [
+utils.InstallFunctions(GlobalArray, DONT_ENUM, [
   "observe", ArrayObserve,
   "unobserve", ArrayUnobserve
 ]);
-$installFunctions(notifierPrototype, DONT_ENUM, [
+utils.InstallFunctions(notifierPrototype, DONT_ENUM, [
   "notify", ObjectNotifierNotify,
   "performChange", ObjectNotifierPerformChange
 ]);

src/prologue.js

@@ -13,45 +13,214 @@
 
 var imports = UNDEFINED;
 var exports = UNDEFINED;
+var imports_from_experimental = UNDEFINED;
 
 
-utils.Export = function Export(f) {
+// Export to other scripts.
+// In normal natives, this exports functions to other normal natives.
+// In experimental natives, this exports to other experimental natives and
+// to normal natives that import using utils.ImportFromExperimental.
+function Export(f) {
   f.next = exports;
   exports = f;
 };
 
 
-utils.Import = function Import(f) {
+// Import from other scripts.
+// In normal natives, this imports from other normal natives.
+// In experimental natives, this imports from other experimental natives and
+// whitelisted exports from normal natives.
+function Import(f) {
   f.next = imports;
   imports = f;
 };
 
+
+// In normal natives, import from experimental natives.
+// Not callable from experimental natives.
+function ImportFromExperimental(f) {
+  f.next = imports_from_experimental;
+  imports_from_experimental = f;
+};
+
+
+function SetFunctionName(f, name, prefix) {
+  if (IS_SYMBOL(name)) {
+    name = "[" + %SymbolDescription(name) + "]";
+  }
+  if (IS_UNDEFINED(prefix)) {
+    %FunctionSetName(f, name);
+  } else {
+    %FunctionSetName(f, prefix + " " + name);
+  }
+}
+
+
+function InstallConstants(object, constants) {
+  %CheckIsBootstrapping();
+  %OptimizeObjectForAddingMultipleProperties(object, constants.length >> 1);
+  var attributes = DONT_ENUM | DONT_DELETE | READ_ONLY;
+  for (var i = 0; i < constants.length; i += 2) {
+    var name = constants[i];
+    var k = constants[i + 1];
+    %AddNamedProperty(object, name, k, attributes);
+  }
+  %ToFastProperties(object);
+}
+
+
+function InstallFunctions(object, attributes, functions) {
+  %CheckIsBootstrapping();
+  %OptimizeObjectForAddingMultipleProperties(object, functions.length >> 1);
+  for (var i = 0; i < functions.length; i += 2) {
+    var key = functions[i];
+    var f = functions[i + 1];
+    SetFunctionName(f, key);
+    %FunctionRemovePrototype(f);
+    %AddNamedProperty(object, key, f, attributes);
+    %SetNativeFlag(f);
+  }
+  %ToFastProperties(object);
+}
+
+
+// Helper function to install a getter-only accessor property.
+function InstallGetter(object, name, getter, attributes) {
+  %CheckIsBootstrapping();
+  if (typeof attributes == "undefined") {
+    attributes = DONT_ENUM;
+  }
+  SetFunctionName(getter, name, "get");
+  %FunctionRemovePrototype(getter);
+  %DefineAccessorPropertyUnchecked(object, name, getter, null, attributes);
+  %SetNativeFlag(getter);
+}
+
+
+// Helper function to install a getter/setter accessor property.
+function InstallGetterSetter(object, name, getter, setter) {
+  %CheckIsBootstrapping();
+  SetFunctionName(getter, name, "get");
+  SetFunctionName(setter, name, "set");
+  %FunctionRemovePrototype(getter);
+  %FunctionRemovePrototype(setter);
+  %DefineAccessorPropertyUnchecked(object, name, getter, setter, DONT_ENUM);
+  %SetNativeFlag(getter);
+  %SetNativeFlag(setter);
+}
+
+
+// Prevents changes to the prototype of a built-in function.
+// The "prototype" property of the function object is made non-configurable,
+// and the prototype object is made non-extensible. The latter prevents
+// changing the __proto__ property.
+function SetUpLockedPrototype(
+    constructor, fields, methods) {
+  %CheckIsBootstrapping();
+  var prototype = constructor.prototype;
+  // Install functions first, because this function is used to initialize
+  // PropertyDescriptor itself.
+  var property_count = (methods.length >> 1) + (fields ? fields.length : 0);
+  if (property_count >= 4) {
+    %OptimizeObjectForAddingMultipleProperties(prototype, property_count);
+  }
+  if (fields) {
+    for (var i = 0; i < fields.length; i++) {
+      %AddNamedProperty(prototype, fields[i],
+                        UNDEFINED, DONT_ENUM | DONT_DELETE);
+    }
+  }
+  for (var i = 0; i < methods.length; i += 2) {
+    var key = methods[i];
+    var f = methods[i + 1];
+    %AddNamedProperty(prototype, key, f, DONT_ENUM | DONT_DELETE | READ_ONLY);
+    %SetNativeFlag(f);
+  }
+  %InternalSetPrototype(prototype, null);
+  %ToFastProperties(prototype);
+}
+
 // -----------------------------------------------------------------------
 // To be called by bootstrapper
 
-utils.PostNatives = function() {
+var experimental_exports = UNDEFINED;
+
+function PostNatives(utils) {
   %CheckIsBootstrapping();
 
   var container = {};
   for ( ; !IS_UNDEFINED(exports); exports = exports.next) exports(container);
   for ( ; !IS_UNDEFINED(imports); imports = imports.next) imports(container);
 
+  // Whitelist of exports from normal natives to experimental natives.
   var expose_to_experimental = [
+    "GetIterator",
+    "GetMethod",
+    "InnerArrayEvery",
+    "InnerArrayFilter",
+    "InnerArrayForEach",
+    "InnerArrayIndexOf",
+    "InnerArrayLastIndexOf",
+    "InnerArrayMap",
+    "InnerArrayReverse",
+    "InnerArraySome",
+    "InnerArraySort",
+    "IsNaN",
     "MathMax",
     "MathMin",
+    "ObjectIsFrozen",
+    "OwnPropertyKeys",
+    "ToNameArray",
   ];
-  var experimental = {};
+  experimental_exports = {};
   %OptimizeObjectForAddingMultipleProperties(
-      experimental, expose_to_experimental.length);
-  for (var key of expose_to_experimental) experimental[key] = container[key];
-  %ToFastProperties(experimental);
+      experimental_exports, expose_to_experimental.length);
+  for (var key of expose_to_experimental) {
+    experimental_exports[key] = container[key];
+  }
+  %ToFastProperties(experimental_exports);
   container = UNDEFINED;
 
-  utils.Export = UNDEFINED;
   utils.PostNatives = UNDEFINED;
-  utils.Import = function ImportFromExperimental(f) {
-    f(experimental);
-  };
+  utils.ImportFromExperimental = UNDEFINED;
+};
+
+
+function PostExperimentals(utils) {
+  %CheckIsBootstrapping();
+
+  for ( ; !IS_UNDEFINED(exports); exports = exports.next) {
+    exports(experimental_exports);
+  }
+  for ( ; !IS_UNDEFINED(imports); imports = imports.next) {
+    imports(experimental_exports);
+  }
+  for ( ; !IS_UNDEFINED(imports_from_experimental);
+          imports_from_experimental = imports_from_experimental.next) {
+    imports_from_experimental(experimental_exports);
+  }
+
+  experimental_exports = UNDEFINED;
+
+  utils.PostExperimentals = UNDEFINED;
+  utils.Import = UNDEFINED;
+  utils.Export = UNDEFINED;
 };
 
+// -----------------------------------------------------------------------
+
+InstallFunctions(utils, NONE, [
+  "Import", Import,
+  "Export", Export,
+  "ImportFromExperimental", ImportFromExperimental,
+  "SetFunctionName", SetFunctionName,
+  "InstallConstants", InstallConstants,
+  "InstallFunctions", InstallFunctions,
+  "InstallGetter", InstallGetter,
+  "InstallGetterSetter", InstallGetterSetter,
+  "SetUpLockedPrototype", SetUpLockedPrototype,
+  "PostNatives", PostNatives,
+  "PostExperimentals", PostExperimentals,
+]);
+
 })

src/promise.js

@@ -371,7 +371,7 @@ function PromiseHasUserDefinedRejectHandler() {
 %AddNamedProperty(GlobalPromise.prototype, symbolToStringTag, "Promise",
                   DONT_ENUM | READ_ONLY);
 
-$installFunctions(GlobalPromise, DONT_ENUM, [
+utils.InstallFunctions(GlobalPromise, DONT_ENUM, [
   "defer", PromiseDeferred,
   "accept", PromiseResolved,
   "reject", PromiseRejected,
@@ -380,7 +380,7 @@ $installFunctions(GlobalPromise, DONT_ENUM, [
   "resolve", PromiseCast
 ]);
 
-$installFunctions(GlobalPromise.prototype, DONT_ENUM, [
+utils.InstallFunctions(GlobalPromise.prototype, DONT_ENUM, [
   "chain", PromiseChain,
   "then", PromiseThen,
   "catch", PromiseCatch

src/proxy.js

@@ -2,11 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-var $proxyDelegateCallAndConstruct;
 var $proxyDerivedGetTrap;
 var $proxyDerivedHasTrap;
-var $proxyDerivedHasOwnTrap;
-var $proxyDerivedKeysTrap;
 var $proxyDerivedSetTrap;
 var $proxyEnumerate;
 
@@ -16,10 +13,19 @@ var $proxyEnumerate;
 
 %CheckIsBootstrapping();
 
+// ----------------------------------------------------------------------------
+// Imports
+
 var GlobalFunction = global.Function;
 var GlobalObject = global.Object;
 
-// -------------------------------------------------------------------
+var ToNameArray;
+
+utils.Import(function(from) {
+  ToNameArray = from.ToNameArray;
+});
+
+//----------------------------------------------------------------------------
 
 function ProxyCreate(handler, proto) {
   if (!IS_SPEC_OBJECT(handler))
@@ -175,7 +181,7 @@ function ProxyEnumerate(proxy) {
   if (IS_UNDEFINED(handler.enumerate)) {
     return %Apply(DerivedEnumerateTrap, handler, [], 0, 0)
   } else {
-    return $toNameArray(handler.enumerate(), "enumerate", false)
+    return ToNameArray(handler.enumerate(), "enumerate", false)
   }
 }
 
@@ -185,17 +191,23 @@ var Proxy = new GlobalObject();
 %AddNamedProperty(global, "Proxy", Proxy, DONT_ENUM);
 
 //Set up non-enumerable properties of the Proxy object.
-$installFunctions(Proxy, DONT_ENUM, [
+utils.InstallFunctions(Proxy, DONT_ENUM, [
   "create", ProxyCreate,
   "createFunction", ProxyCreateFunction
 ])
 
-$proxyDelegateCallAndConstruct = DelegateCallAndConstruct;
+// -------------------------------------------------------------------
+// Exports
+
 $proxyDerivedGetTrap = DerivedGetTrap;
 $proxyDerivedHasTrap = DerivedHasTrap;
-$proxyDerivedHasOwnTrap = DerivedHasOwnTrap;
-$proxyDerivedKeysTrap = DerivedKeysTrap;
 $proxyDerivedSetTrap = DerivedSetTrap;
 $proxyEnumerate = ProxyEnumerate;
 
+utils.Export(function(to) {
+  to.ProxyDelegateCallAndConstruct = DelegateCallAndConstruct;
+  to.ProxyDerivedHasOwnTrap = DerivedHasOwnTrap;
+  to.ProxyDerivedKeysTrap = DerivedKeysTrap;
+});
+
 })

src/regexp.js

@@ -2,9 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-var $regexpExec;
-var $regexpExecNoTests;
-var $regexpLastMatchInfo;
 var $regexpLastMatchInfoOverride;
 var harmony_regexps = false;
 var harmony_unicode_regexps = false;
@@ -22,12 +19,12 @@ var InternalPackedArray = utils.InternalPackedArray;
 // -------------------------------------------------------------------
 
 // Property of the builtins object for recording the result of the last
-// regexp match.  The property $regexpLastMatchInfo includes the matchIndices
+// regexp match.  The property RegExpLastMatchInfo includes the matchIndices
 // array of the last successful regexp match (an array of start/end index
 // pairs for the match and all the captured substrings), the invariant is
 // that there are at least two capture indeces.  The array also contains
 // the subject string for the last successful match.
-$regexpLastMatchInfo = new InternalPackedArray(
+var RegExpLastMatchInfo = new InternalPackedArray(
  2,                 // REGEXP_NUMBER_OF_CAPTURES
  "",                // Last subject.
  UNDEFINED,         // Last input - settable with RegExpSetInput.
@@ -104,7 +101,7 @@ function RegExpCompileJS(pattern, flags) {
 
 
 function DoRegExpExec(regexp, string, index) {
-  var result = %_RegExpExec(regexp, string, index, $regexpLastMatchInfo);
+  var result = %_RegExpExec(regexp, string, index, RegExpLastMatchInfo);
   if (result !== null) $regexpLastMatchInfoOverride = null;
   return result;
 }
@@ -138,7 +135,7 @@ endmacro
 
 function RegExpExecNoTests(regexp, string, start) {
   // Must be called with RegExp, string and positive integer as arguments.
-  var matchInfo = %_RegExpExec(regexp, string, start, $regexpLastMatchInfo);
+  var matchInfo = %_RegExpExec(regexp, string, start, RegExpLastMatchInfo);
   if (matchInfo !== null) {
     $regexpLastMatchInfoOverride = null;
     RETURN_NEW_RESULT_FROM_MATCH_INFO(matchInfo, string);
@@ -171,8 +168,8 @@ function RegExpExecJS(string) {
     i = 0;
   }
 
-  // matchIndices is either null or the $regexpLastMatchInfo array.
-  var matchIndices = %_RegExpExec(this, string, i, $regexpLastMatchInfo);
+  // matchIndices is either null or the RegExpLastMatchInfo array.
+  var matchIndices = %_RegExpExec(this, string, i, RegExpLastMatchInfo);
 
   if (IS_NULL(matchIndices)) {
     this.lastIndex = 0;
@@ -182,7 +179,7 @@ function RegExpExecJS(string) {
   // Successful match.
   $regexpLastMatchInfoOverride = null;
   if (updateLastIndex) {
-    this.lastIndex = $regexpLastMatchInfo[CAPTURE1];
+    this.lastIndex = RegExpLastMatchInfo[CAPTURE1];
   }
   RETURN_NEW_RESULT_FROM_MATCH_INFO(matchIndices, string);
 }
@@ -214,14 +211,14 @@ function RegExpTest(string) {
       this.lastIndex = 0;
       return false;
     }
-    // matchIndices is either null or the $regexpLastMatchInfo array.
-    var matchIndices = %_RegExpExec(this, string, i, $regexpLastMatchInfo);
+    // matchIndices is either null or the RegExpLastMatchInfo array.
+    var matchIndices = %_RegExpExec(this, string, i, RegExpLastMatchInfo);
     if (IS_NULL(matchIndices)) {
       this.lastIndex = 0;
       return false;
     }
     $regexpLastMatchInfoOverride = null;
-    this.lastIndex = $regexpLastMatchInfo[CAPTURE1];
+    this.lastIndex = RegExpLastMatchInfo[CAPTURE1];
     return true;
   } else {
     // Non-global, non-sticky regexp.
@@ -235,8 +232,8 @@ function RegExpTest(string) {
         %_StringCharCodeAt(regexp.source, 2) != 63) {  // '?'
       regexp = TrimRegExp(regexp);
     }
-    // matchIndices is either null or the $regexpLastMatchInfo array.
-    var matchIndices = %_RegExpExec(regexp, string, 0, $regexpLastMatchInfo);
+    // matchIndices is either null or the RegExpLastMatchInfo array.
+    var matchIndices = %_RegExpExec(regexp, string, 0, RegExpLastMatchInfo);
     if (IS_NULL(matchIndices)) {
       this.lastIndex = 0;
       return false;
@@ -281,10 +278,10 @@ function RegExpGetLastMatch() {
   if ($regexpLastMatchInfoOverride !== null) {
     return OVERRIDE_MATCH($regexpLastMatchInfoOverride);
   }
-  var regExpSubject = LAST_SUBJECT($regexpLastMatchInfo);
+  var regExpSubject = LAST_SUBJECT(RegExpLastMatchInfo);
   return %_SubString(regExpSubject,
-                     $regexpLastMatchInfo[CAPTURE0],
-                     $regexpLastMatchInfo[CAPTURE1]);
+                     RegExpLastMatchInfo[CAPTURE0],
+                     RegExpLastMatchInfo[CAPTURE1]);
 }
 
 
@@ -294,14 +291,14 @@ function RegExpGetLastParen() {
     if (override.length <= 3) return '';
     return override[override.length - 3];
   }
-  var length = NUMBER_OF_CAPTURES($regexpLastMatchInfo);
+  var length = NUMBER_OF_CAPTURES(RegExpLastMatchInfo);
   if (length <= 2) return '';  // There were no captures.
   // We match the SpiderMonkey behavior: return the substring defined by the
   // last pair (after the first pair) of elements of the capture array even if
   // it is empty.
-  var regExpSubject = LAST_SUBJECT($regexpLastMatchInfo);
-  var start = $regexpLastMatchInfo[CAPTURE(length - 2)];
-  var end = $regexpLastMatchInfo[CAPTURE(length - 1)];
+  var regExpSubject = LAST_SUBJECT(RegExpLastMatchInfo);
+  var start = RegExpLastMatchInfo[CAPTURE(length - 2)];
+  var end = RegExpLastMatchInfo[CAPTURE(length - 1)];
   if (start != -1 && end != -1) {
     return %_SubString(regExpSubject, start, end);
   }
@@ -313,8 +310,8 @@ function RegExpGetLeftContext() {
   var start_index;
   var subject;
   if (!$regexpLastMatchInfoOverride) {
-    start_index = $regexpLastMatchInfo[CAPTURE0];
-    subject = LAST_SUBJECT($regexpLastMatchInfo);
+    start_index = RegExpLastMatchInfo[CAPTURE0];
+    subject = LAST_SUBJECT(RegExpLastMatchInfo);
   } else {
     var override = $regexpLastMatchInfoOverride;
     start_index = OVERRIDE_POS(override);
@@ -328,8 +325,8 @@ function RegExpGetRightContext() {
   var start_index;
   var subject;
   if (!$regexpLastMatchInfoOverride) {
-    start_index = $regexpLastMatchInfo[CAPTURE1];
-    subject = LAST_SUBJECT($regexpLastMatchInfo);
+    start_index = RegExpLastMatchInfo[CAPTURE1];
+    subject = LAST_SUBJECT(RegExpLastMatchInfo);
   } else {
     var override = $regexpLastMatchInfoOverride;
     subject = OVERRIDE_SUBJECT(override);
@@ -352,11 +349,11 @@ function RegExpMakeCaptureGetter(n) {
       return '';
     }
     var index = n * 2;
-    if (index >= NUMBER_OF_CAPTURES($regexpLastMatchInfo)) return '';
-    var matchStart = $regexpLastMatchInfo[CAPTURE(index)];
-    var matchEnd = $regexpLastMatchInfo[CAPTURE(index + 1)];
+    if (index >= NUMBER_OF_CAPTURES(RegExpLastMatchInfo)) return '';
+    var matchStart = RegExpLastMatchInfo[CAPTURE(index)];
+    var matchEnd = RegExpLastMatchInfo[CAPTURE(index + 1)];
     if (matchStart == -1 || matchEnd == -1) return '';
-    return %_SubString(LAST_SUBJECT($regexpLastMatchInfo), matchStart, matchEnd);
+    return %_SubString(LAST_SUBJECT(RegExpLastMatchInfo), matchStart, matchEnd);
   };
 }
 
@@ -367,7 +364,7 @@ function RegExpMakeCaptureGetter(n) {
     GlobalRegExp.prototype, 'constructor', GlobalRegExp, DONT_ENUM);
 %SetCode(GlobalRegExp, RegExpConstructor);
 
-$installFunctions(GlobalRegExp.prototype, DONT_ENUM, [
+utils.InstallFunctions(GlobalRegExp.prototype, DONT_ENUM, [
   "exec", RegExpExecJS,
   "test", RegExpTest,
   "toString", RegExpToString,
@@ -381,11 +378,11 @@ $installFunctions(GlobalRegExp.prototype, DONT_ENUM, [
 // value is set the value it is set to is coerced to a string.
 // Getter and setter for the input.
 var RegExpGetInput = function() {
-  var regExpInput = LAST_INPUT($regexpLastMatchInfo);
+  var regExpInput = LAST_INPUT(RegExpLastMatchInfo);
   return IS_UNDEFINED(regExpInput) ? "" : regExpInput;
 };
 var RegExpSetInput = function(string) {
-  LAST_INPUT($regexpLastMatchInfo) = $toString(string);
+  LAST_INPUT(RegExpLastMatchInfo) = $toString(string);
 };
 
 %OptimizeObjectForAddingMultipleProperties(GlobalRegExp, 22);
@@ -443,7 +440,13 @@ for (var i = 1; i < 10; ++i) {
 }
 %ToFastProperties(GlobalRegExp);
 
-$regexpExecNoTests = RegExpExecNoTests;
-$regexpExec = DoRegExpExec;
+// -------------------------------------------------------------------
+// Exports
+
+utils.Export(function(to) {
+  to.RegExpExec = DoRegExpExec;
+  to.RegExpExecNoTests = RegExpExecNoTests;
+  to.RegExpLastMatchInfo = RegExpLastMatchInfo;
+});
 
 })

src/string-iterator.js

@@ -8,9 +8,18 @@
 
 %CheckIsBootstrapping();
 
+// -------------------------------------------------------------------
+// Imports
+
 var GlobalString = global.String;
 
-//-------------------------------------------------------------------
+var ArrayIteratorCreateResultObject;
+
+utils.Import(function(from) {
+  ArrayIteratorCreateResultObject = from.ArrayIteratorCreateResultObject;
+});
+
+// -------------------------------------------------------------------
 
 var stringIteratorIteratedStringSymbol =
     GLOBAL_PRIVATE("StringIterator#iteratedString");
@@ -41,7 +50,7 @@ function StringIteratorNext() {
 
   var s = GET_PRIVATE(iterator, stringIteratorIteratedStringSymbol);
   if (IS_UNDEFINED(s)) {
-    return $iteratorCreateResultObject(UNDEFINED, true);
+    return ArrayIteratorCreateResultObject(UNDEFINED, true);
   }
 
   var position = GET_PRIVATE(iterator, stringIteratorNextIndexSymbol);
@@ -50,7 +59,7 @@ function StringIteratorNext() {
   if (position >= length) {
     SET_PRIVATE(iterator, stringIteratorIteratedStringSymbol,
                 UNDEFINED);
-    return $iteratorCreateResultObject(UNDEFINED, true);
+    return ArrayIteratorCreateResultObject(UNDEFINED, true);
   }
 
   var first = %_StringCharCodeAt(s, position);
@@ -67,7 +76,7 @@ function StringIteratorNext() {
 
   SET_PRIVATE(iterator, stringIteratorNextIndexSymbol, position);
 
-  return $iteratorCreateResultObject(resultString, false);
+  return ArrayIteratorCreateResultObject(resultString, false);
 }
 
 
@@ -81,13 +90,13 @@ function StringPrototypeIterator() {
 %FunctionSetPrototype(StringIterator, {__proto__: $iteratorPrototype});
 %FunctionSetInstanceClassName(StringIterator, 'String Iterator');
 
-$installFunctions(StringIterator.prototype, DONT_ENUM, [
+utils.InstallFunctions(StringIterator.prototype, DONT_ENUM, [
   'next', StringIteratorNext
 ]);
 %AddNamedProperty(StringIterator.prototype, symbolToStringTag,
                   "String Iterator", READ_ONLY | DONT_ENUM);
 
-$setFunctionName(StringPrototypeIterator, symbolIterator);
+utils.SetFunctionName(StringPrototypeIterator, symbolIterator);
 %AddNamedProperty(GlobalString.prototype, symbolIterator,
                   StringPrototypeIterator, DONT_ENUM);
 

src/string.js

@@ -16,10 +16,16 @@ var InternalPackedArray = utils.InternalPackedArray;
 
 var MathMax;
 var MathMin;
+var RegExpExec;
+var RegExpExecNoTests;
+var RegExpLastMatchInfo;
 
 utils.Import(function(from) {
   MathMax = from.MathMax;
   MathMin = from.MathMin;
+  RegExpExec = from.RegExpExec;
+  RegExpExecNoTests = from.RegExpExecNoTests;
+  RegExpLastMatchInfo = from.RegExpLastMatchInfo;
 });
 
 //-------------------------------------------------------------------
@@ -162,15 +168,15 @@ function StringMatchJS(regexp) {
     // value is discarded.
     var lastIndex = regexp.lastIndex;
     TO_INTEGER_FOR_SIDE_EFFECT(lastIndex);
-    if (!regexp.global) return $regexpExecNoTests(regexp, subject, 0);
-    var result = %StringMatch(subject, regexp, $regexpLastMatchInfo);
+    if (!regexp.global) return RegExpExecNoTests(regexp, subject, 0);
+    var result = %StringMatch(subject, regexp, RegExpLastMatchInfo);
     if (result !== null) $regexpLastMatchInfoOverride = null;
     regexp.lastIndex = 0;
     return result;
   }
   // Non-regexp argument.
   regexp = new GlobalRegExp(regexp);
-  return $regexpExecNoTests(regexp, subject, 0);
+  return RegExpExecNoTests(regexp, subject, 0);
 }
 
 
@@ -195,7 +201,7 @@ function StringNormalizeJS(form) {
 }
 
 
-// This has the same size as the $regexpLastMatchInfo array, and can be used
+// This has the same size as the RegExpLastMatchInfo array, and can be used
 // for functions that expect that structure to be returned.  It is used when
 // the needle is a string rather than a regexp.  In this case we can't update
 // lastMatchArray without erroneously affecting the properties on the global
@@ -237,7 +243,7 @@ function StringReplace(search, replace) {
 
       if (!search.global) {
         // Non-global regexp search, string replace.
-        var match = $regexpExec(search, subject, 0);
+        var match = RegExpExec(search, subject, 0);
         if (match == null) {
           search.lastIndex = 0
           return subject;
@@ -246,7 +252,7 @@ function StringReplace(search, replace) {
           return %_SubString(subject, 0, match[CAPTURE0]) +
                  %_SubString(subject, match[CAPTURE1], subject.length)
         }
-        return ExpandReplacement(replace, subject, $regexpLastMatchInfo,
+        return ExpandReplacement(replace, subject, RegExpLastMatchInfo,
                                  %_SubString(subject, 0, match[CAPTURE0])) +
                %_SubString(subject, match[CAPTURE1], subject.length);
       }
@@ -255,17 +261,17 @@ function StringReplace(search, replace) {
       search.lastIndex = 0;
       if ($regexpLastMatchInfoOverride == null) {
         return %StringReplaceGlobalRegExpWithString(
-            subject, search, replace, $regexpLastMatchInfo);
+            subject, search, replace, RegExpLastMatchInfo);
       } else {
         // We use this hack to detect whether StringReplaceRegExpWithString
         // found at least one hit. In that case we need to remove any
         // override.
-        var saved_subject = $regexpLastMatchInfo[LAST_SUBJECT_INDEX];
-        $regexpLastMatchInfo[LAST_SUBJECT_INDEX] = 0;
+        var saved_subject = RegExpLastMatchInfo[LAST_SUBJECT_INDEX];
+        RegExpLastMatchInfo[LAST_SUBJECT_INDEX] = 0;
         var answer = %StringReplaceGlobalRegExpWithString(
-            subject, search, replace, $regexpLastMatchInfo);
-        if (%_IsSmi($regexpLastMatchInfo[LAST_SUBJECT_INDEX])) {
-          $regexpLastMatchInfo[LAST_SUBJECT_INDEX] = saved_subject;
+            subject, search, replace, RegExpLastMatchInfo);
+        if (%_IsSmi(RegExpLastMatchInfo[LAST_SUBJECT_INDEX])) {
+          RegExpLastMatchInfo[LAST_SUBJECT_INDEX] = saved_subject;
         } else {
           $regexpLastMatchInfoOverride = null;
         }
@@ -431,7 +437,7 @@ function StringReplaceGlobalRegExpWithFunction(subject, regexp, replace) {
   }
   var res = %RegExpExecMultiple(regexp,
                                 subject,
-                                $regexpLastMatchInfo,
+                                RegExpLastMatchInfo,
                                 resultArray);
   regexp.lastIndex = 0;
   if (IS_NULL(res)) {
@@ -440,7 +446,7 @@ function StringReplaceGlobalRegExpWithFunction(subject, regexp, replace) {
     return subject;
   }
   var len = res.length;
-  if (NUMBER_OF_CAPTURES($regexpLastMatchInfo) == 2) {
+  if (NUMBER_OF_CAPTURES(RegExpLastMatchInfo) == 2) {
     // If the number of captures is two then there are no explicit captures in
     // the regexp, just the implicit capture that captures the whole match.  In
     // this case we can simplify quite a bit and end up with something faster.
@@ -494,7 +500,7 @@ function StringReplaceGlobalRegExpWithFunction(subject, regexp, replace) {
 
 
 function StringReplaceNonGlobalRegExpWithFunction(subject, regexp, replace) {
-  var matchInfo = $regexpExec(regexp, subject, 0);
+  var matchInfo = RegExpExec(regexp, subject, 0);
   if (IS_NULL(matchInfo)) {
     regexp.lastIndex = 0;
     return subject;
@@ -542,7 +548,7 @@ function StringSearch(re) {
   } else {
     regexp = new GlobalRegExp(re);
   }
-  var match = $regexpExec(regexp, TO_STRING_INLINE(this), 0);
+  var match = RegExpExec(regexp, TO_STRING_INLINE(this), 0);
   if (match) {
     return match[CAPTURE0];
   }
@@ -628,7 +634,7 @@ function StringSplitJS(separator, limit) {
 
 function StringSplitOnRegExp(subject, separator, limit, length) {
   if (length === 0) {
-    if ($regexpExec(separator, subject, 0, 0) != null) {
+    if (RegExpExec(separator, subject, 0, 0) != null) {
       return [];
     }
     return [subject];
@@ -647,7 +653,7 @@ function StringSplitOnRegExp(subject, separator, limit, length) {
       break;
     }
 
-    var matchInfo = $regexpExec(separator, subject, startIndex);
+    var matchInfo = RegExpExec(separator, subject, startIndex);
     if (matchInfo == null || length === (startMatch = matchInfo[CAPTURE0])) {
       result[result.length] = %_SubString(subject, currentIndex, length);
       break;
@@ -1124,14 +1130,14 @@ function StringRaw(callSite) {
     GlobalString.prototype, "constructor", GlobalString, DONT_ENUM);
 
 // Set up the non-enumerable functions on the String object.
-$installFunctions(GlobalString, DONT_ENUM, [
+utils.InstallFunctions(GlobalString, DONT_ENUM, [
   "fromCharCode", StringFromCharCode,
   "fromCodePoint", StringFromCodePoint,
   "raw", StringRaw
 ]);
 
 // Set up the non-enumerable functions on the String prototype object.
-$installFunctions(GlobalString.prototype, DONT_ENUM, [
+utils.InstallFunctions(GlobalString.prototype, DONT_ENUM, [
   "valueOf", StringValueOf,
   "toString", StringToString,
   "charAt", StringCharAtJS,

src/symbol.js

@@ -18,9 +18,18 @@ var $symbolToString;
 
 %CheckIsBootstrapping();
 
+// -------------------------------------------------------------------
+// Imports
+
 var GlobalObject = global.Object;
 var GlobalSymbol = global.Symbol;
 
+var ObjectGetOwnPropertyKeys;
+
+utils.Import(function(from) {
+  ObjectGetOwnPropertyKeys = from.ObjectGetOwnPropertyKeys;
+});
+
 // -------------------------------------------------------------------
 
 function SymbolConstructor(x) {
@@ -73,7 +82,7 @@ function ObjectGetOwnPropertySymbols(obj) {
 
   // TODO(arv): Proxies use a shared trap for String and Symbol keys.
 
-  return $objectGetOwnPropertyKeys(obj, PROPERTY_ATTRIBUTES_STRING);
+  return ObjectGetOwnPropertyKeys(obj, PROPERTY_ATTRIBUTES_STRING);
 }
 
 //-------------------------------------------------------------------
@@ -81,7 +90,7 @@ function ObjectGetOwnPropertySymbols(obj) {
 %SetCode(GlobalSymbol, SymbolConstructor);
 %FunctionSetPrototype(GlobalSymbol, new GlobalObject());
 
-$installConstants(GlobalSymbol, [
+utils.InstallConstants(GlobalSymbol, [
   // TODO(rossberg): expose when implemented.
   // "hasInstance", symbolHasInstance,
   // "isConcatSpreadable", symbolIsConcatSpreadable,
@@ -93,7 +102,7 @@ $installConstants(GlobalSymbol, [
   "unscopables", symbolUnscopables
 ]);
 
-$installFunctions(GlobalSymbol, DONT_ENUM, [
+utils.InstallFunctions(GlobalSymbol, DONT_ENUM, [
   "for", SymbolFor,
   "keyFor", SymbolKeyFor
 ]);
@@ -103,12 +112,12 @@ $installFunctions(GlobalSymbol, DONT_ENUM, [
 %AddNamedProperty(
     GlobalSymbol.prototype, symbolToStringTag, "Symbol", DONT_ENUM | READ_ONLY);
 
-$installFunctions(GlobalSymbol.prototype, DONT_ENUM, [
+utils.InstallFunctions(GlobalSymbol.prototype, DONT_ENUM, [
   "toString", SymbolToString,
   "valueOf", SymbolValueOf
 ]);
 
-$installFunctions(GlobalObject, DONT_ENUM, [
+utils.InstallFunctions(GlobalObject, DONT_ENUM, [
   "getOwnPropertySymbols", ObjectGetOwnPropertySymbols
 ]);
 

src/third_party/fdlibm/fdlibm.js

@@ -1023,7 +1023,7 @@ function MathLog2(x) {
 
 //-------------------------------------------------------------------
 
-$installFunctions(GlobalMath, DONT_ENUM, [
+utils.InstallFunctions(GlobalMath, DONT_ENUM, [
   "cos", MathCos,
   "sin", MathSin,
   "tan", MathTan,

src/typedarray.js

@@ -16,17 +16,6 @@ var GlobalArrayBuffer = global.ArrayBuffer;
 var GlobalDataView = global.DataView;
 var GlobalObject = global.Object;
 
-var MathMax;
-var MathMin;
-
-utils.Import(function(from) {
-  MathMax = from.MathMax;
-  MathMin = from.MathMin;
-});
-
-// -------------------------------------------------------------------
-
-
 macro TYPED_ARRAYS(FUNCTION)
 // arrayIds below should be synchronized with Runtime_TypedArrayInitialize.
 FUNCTION(1, Uint8Array, 1)
@@ -46,6 +35,14 @@ endmacro
 
 TYPED_ARRAYS(DECLARE_GLOBALS)
 
+var MathMax;
+var MathMin;
+
+utils.Import(function(from) {
+  MathMax = from.MathMax;
+  MathMin = from.MathMin;
+});
+
 // --------------- Typed Arrays ---------------------
 
 macro TYPED_ARRAY_CONSTRUCTOR(ARRAY_ID, NAME, ELEMENT_SIZE)
@@ -326,16 +323,16 @@ macro SETUP_TYPED_ARRAY(ARRAY_ID, NAME, ELEMENT_SIZE)
   %AddNamedProperty(GlobalNAME.prototype,
                     "BYTES_PER_ELEMENT", ELEMENT_SIZE,
                     READ_ONLY | DONT_ENUM | DONT_DELETE);
-  $installGetter(GlobalNAME.prototype, "buffer", NAME_GetBuffer);
-  $installGetter(GlobalNAME.prototype, "byteOffset", NAME_GetByteOffset,
-                 DONT_ENUM | DONT_DELETE);
-  $installGetter(GlobalNAME.prototype, "byteLength", NAME_GetByteLength,
-                 DONT_ENUM | DONT_DELETE);
-  $installGetter(GlobalNAME.prototype, "length", NAME_GetLength,
-                 DONT_ENUM | DONT_DELETE);
-  $installGetter(GlobalNAME.prototype, symbolToStringTag,
-                 TypedArrayGetToStringTag);
-  $installFunctions(GlobalNAME.prototype, DONT_ENUM, [
+  utils.InstallGetter(GlobalNAME.prototype, "buffer", NAME_GetBuffer);
+  utils.InstallGetter(GlobalNAME.prototype, "byteOffset", NAME_GetByteOffset,
+                      DONT_ENUM | DONT_DELETE);
+  utils.InstallGetter(GlobalNAME.prototype, "byteLength", NAME_GetByteLength,
+                      DONT_ENUM | DONT_DELETE);
+  utils.InstallGetter(GlobalNAME.prototype, "length", NAME_GetLength,
+                      DONT_ENUM | DONT_DELETE);
+  utils.InstallGetter(GlobalNAME.prototype, symbolToStringTag,
+                      TypedArrayGetToStringTag);
+  utils.InstallFunctions(GlobalNAME.prototype, DONT_ENUM, [
     "subarray", NAMESubArray,
     "set", TypedArraySet
   ]);
@@ -442,11 +439,13 @@ DATA_VIEW_TYPES(DATA_VIEW_GETTER_SETTER)
 %AddNamedProperty(GlobalDataView.prototype, symbolToStringTag, "DataView",
                   READ_ONLY|DONT_ENUM);
 
-$installGetter(GlobalDataView.prototype, "buffer", DataViewGetBufferJS);
-$installGetter(GlobalDataView.prototype, "byteOffset", DataViewGetByteOffset);
-$installGetter(GlobalDataView.prototype, "byteLength", DataViewGetByteLength);
+utils.InstallGetter(GlobalDataView.prototype, "buffer", DataViewGetBufferJS);
+utils.InstallGetter(GlobalDataView.prototype, "byteOffset",
+                    DataViewGetByteOffset);
+utils.InstallGetter(GlobalDataView.prototype, "byteLength",
+                    DataViewGetByteLength);
 
-$installFunctions(GlobalDataView.prototype, DONT_ENUM, [
+utils.InstallFunctions(GlobalDataView.prototype, DONT_ENUM, [
   "getInt8", DataViewGetInt8JS,
   "setInt8", DataViewSetInt8JS,
 

src/uri.js

@@ -360,7 +360,7 @@ function URIEncodeComponent(component) {
 
 // Set up non-enumerable URI functions on the global object and set
 // their names.
-$installFunctions(global, DONT_ENUM, [
+utils.InstallFunctions(global, DONT_ENUM, [
   "escape", URIEscapeJS,
   "unescape", URIUnescapeJS,
   "decodeURI", URIDecode,

src/weak-collection.js

@@ -88,7 +88,7 @@ function WeakMapDelete(key) {
                   DONT_ENUM | READ_ONLY);
 
 // Set up the non-enumerable functions on the WeakMap prototype object.
-$installFunctions(GlobalWeakMap.prototype, DONT_ENUM, [
+utils.InstallFunctions(GlobalWeakMap.prototype, DONT_ENUM, [
   "get", WeakMapGet,
   "set", WeakMapSet,
   "has", WeakMapHas,
@@ -158,7 +158,7 @@ function WeakSetDelete(value) {
                   DONT_ENUM | READ_ONLY);
 
 // Set up the non-enumerable functions on the WeakSet prototype object.
-$installFunctions(GlobalWeakSet.prototype, DONT_ENUM, [
+utils.InstallFunctions(GlobalWeakSet.prototype, DONT_ENUM, [
   "add", WeakSetAdd,
   "has", WeakSetHas,
   "delete", WeakSetDelete

test/mjsunit/compiler/jsnatives.js

@@ -29,5 +29,5 @@
 
 // Test call of JS runtime functions.
 
-var a = %$isNaN(0/0);
-assertEquals(true, a);
+var a = %MakeError(0, "error");
+assertInstanceof(a, Error);