Add version macros.

src/typedarray.js

 // Copyright 2013 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() {
 
 "use strict";
 
 %CheckIsBootstrapping();
 
@@ skipping 129 matching lines @@
 
 function NAME_GetLength() {
   if (!(%_ClassOf(this) === 'NAME')) {
     throw MakeTypeError(kIncompatibleMethodReceiver, "NAME.length", this);
   }
   return %_TypedArrayGetLength(this);
 }
 
 var $NAME = global.NAME;
 
+function NAMESlice(begin, end) {
+  if (!(%_ClassOf(this) === 'NAME')) {
+    throw MakeTypeError(kIncompatibleMethodReceiver, "NAME.slice", this);
+  }
+  var beginInt = TO_INTEGER(begin);
+  if (!IS_UNDEFINED(end)) {
+    end = TO_INTEGER(end);
+  }
+
+  var srcLength = %_TypedArrayGetLength(this);
+  if (beginInt < 0) {
+    beginInt = $max(0, srcLength + beginInt);
+  } else {
+    beginInt = $min(srcLength, beginInt);
+  }
+
+  var endInt = IS_UNDEFINED(end) ? srcLength : end;
+  if (endInt < 0) {
+    endInt = $max(0, srcLength + endInt);
+  } else {
+    endInt = $min(endInt, srcLength);
+  }
+  if (endInt < beginInt) {
+    endInt = beginInt;
+  }
+  var newLength = endInt - beginInt;
+  var beginByteOffset =
+      %_ArrayBufferViewGetByteOffset(this) + beginInt * ELEMENT_SIZE;
+  var arrayBuffer = %TypedArrayGetBuffer(this);
+  var arrayBufferSlice = new GlobalArrayBuffer(newLength * ELEMENT_SIZE);
+  %ArrayBufferSliceImpl(arrayBuffer, arrayBufferSlice, beginByteOffset);
+  return new $NAME(arrayBufferSlice, 0, newLength);
+}
+
 function NAMESubArray(begin, end) {
   if (!(%_ClassOf(this) === 'NAME')) {
     throw MakeTypeError(kIncompatibleMethodReceiver, "NAME.subarray", this);
   }
   var beginInt = TO_INTEGER(begin);
   if (!IS_UNDEFINED(end)) {
     end = TO_INTEGER(end);
   }
 
   var srcLength = %_TypedArrayGetLength(this);
@@ skipping 150 matching lines @@
   InstallGetter(global.NAME.prototype, "buffer", NAME_GetBuffer);
   InstallGetter(global.NAME.prototype, "byteOffset", NAME_GetByteOffset,
       DONT_ENUM | DONT_DELETE);
   InstallGetter(global.NAME.prototype, "byteLength", NAME_GetByteLength,
       DONT_ENUM | DONT_DELETE);
   InstallGetter(global.NAME.prototype, "length", NAME_GetLength,
       DONT_ENUM | DONT_DELETE);
   InstallGetter(global.NAME.prototype, symbolToStringTag,
                 TypedArrayGetToStringTag);
   InstallFunctions(global.NAME.prototype, DONT_ENUM, [
+    "slice", NAMESlice,
     "subarray", NAMESubArray,
     "set", TypedArraySet
   ]);
 endmacro
 
 TYPED_ARRAYS(SETUP_TYPED_ARRAY)
 
 // --------------------------- DataView -----------------------------
 
 var $DataView = global.DataView;
@@ skipping 132 matching lines @@
   "setUint32", DataViewSetUint32JS,
 
   "getFloat32", DataViewGetFloat32JS,
   "setFloat32", DataViewSetFloat32JS,
 
   "getFloat64", DataViewGetFloat64JS,
   "setFloat64", DataViewSetFloat64JS
 ]);
 
 })();