Update gc branch to bleeding_edge revision 8862.

src/weakmap.js

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
 //       with the distribution.
 //     * Neither the name of Google Inc. nor the names of its
 //       contributors may be used to endorse or promote products derived
 //       from this software without specific prior written permission.
 //
 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-#include "v8.h"
 
-#include "codegen.h"
-#include "deoptimizer.h"
-#include "full-codegen.h"
-#include "safepoint-table.h"
+// This file relies on the fact that the following declaration has been made
+// in runtime.js:
+// const $Object = global.Object;
+const $WeakMap = global.WeakMap;
 
-// Note: this file was taken from the X64 version. ARM has a partially working
-// lithium implementation, but for now it is not ported to mips.
+// -------------------------------------------------------------------
 
-namespace v8 {
-namespace internal {
+// Set the WeakMap function and constructor.
+%SetCode($WeakMap, function(x) {
+  if (%_IsConstructCall()) {
+    %WeakMapInitialize(this);
+  } else {
+    return new $WeakMap();
+  }
+});
 
 
-int Deoptimizer::table_entry_size_ = 10;
-
-
-int Deoptimizer::patch_size() {
-  const int kCallInstructionSizeInWords = 3;
-  return kCallInstructionSizeInWords * Assembler::kInstrSize;
+function WeakMapGet(key) {
+  if (!IS_SPEC_OBJECT(key)) {
+    throw %MakeTypeError('invalid_weakmap_key', [this, key]);
+  }
+  return %WeakMapGet(this, key);
 }
 
 
-void Deoptimizer::DeoptimizeFunction(JSFunction* function) {
-  UNIMPLEMENTED();
+function WeakMapSet(key, value) {
+  if (!IS_SPEC_OBJECT(key)) {
+    throw %MakeTypeError('invalid_weakmap_key', [this, key]);
+  }
+  return %WeakMapSet(this, key, value);
 }
 
 
-void Deoptimizer::PatchStackCheckCodeAt(Address pc_after,
-                                        Code* check_code,
-                                        Code* replacement_code) {
-  UNIMPLEMENTED();
+function WeakMapHas(key) {
+  if (!IS_SPEC_OBJECT(key)) {
+    throw %MakeTypeError('invalid_weakmap_key', [this, key]);
+  }
+  return !IS_UNDEFINED(%WeakMapGet(this, key));
 }
 
 
-void Deoptimizer::RevertStackCheckCodeAt(Address pc_after,
-                                         Code* check_code,
-                                         Code* replacement_code) {
-  UNIMPLEMENTED();
+function WeakMapDelete(key) {
+  if (!IS_SPEC_OBJECT(key)) {
+    throw %MakeTypeError('invalid_weakmap_key', [this, key]);
+  }
+  if (!IS_UNDEFINED(%WeakMapGet(this, key))) {
+    %WeakMapSet(this, key, void 0);
+    return true;
+  } else {
+    return false;
+  }
+}
+
+// -------------------------------------------------------------------
+
+function SetupWeakMap() {
+  // Setup the non-enumerable functions on the WeakMap prototype object.
+  InstallFunctionsOnHiddenPrototype($WeakMap.prototype, DONT_ENUM, $Array(
+    "get", WeakMapGet,
+    "set", WeakMapSet,
+    "has", WeakMapHas,
+    "delete", WeakMapDelete
+  ));
 }
 
 
-void Deoptimizer::DoComputeOsrOutputFrame() {
-  UNIMPLEMENTED();
-}
-
-
-void Deoptimizer::DoComputeFrame(TranslationIterator* iterator,
-                                 int frame_index) {
-  UNIMPLEMENTED();
-}
-
-
-void Deoptimizer::FillInputFrame(Address tos, JavaScriptFrame* frame) {
-  UNIMPLEMENTED();
-}
-
-
-void Deoptimizer::EntryGenerator::Generate() {
-  UNIMPLEMENTED();
-}
-
-
-void Deoptimizer::TableEntryGenerator::GeneratePrologue() {
-  UNIMPLEMENTED();
-}
-
-
-} }  // namespace v8::internal
+SetupWeakMap();