Move V8 to external/v8
Change-Id: If68025d67453785a651c5dfb34fad298c16676a4
diff --git a/src/api.h b/src/api.h
new file mode 100644
index 0000000..1221f35
--- /dev/null
+++ b/src/api.h
@@ -0,0 +1,470 @@
+// Copyright 2008 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.
+
+#ifndef V8_API_H_
+#define V8_API_H_
+
+#include "apiutils.h"
+#include "factory.h"
+
+namespace v8 {
+
+// Constants used in the implementation of the API. The most natural thing
+// would usually be to place these with the classes that use them, but
+// we want to keep them out of v8.h because it is an externally
+// visible file.
+class Consts {
+ public:
+ enum TemplateType {
+ FUNCTION_TEMPLATE = 0,
+ OBJECT_TEMPLATE = 1
+ };
+};
+
+
+// Utilities for working with neander-objects, primitive
+// env-independent JSObjects used by the api.
+class NeanderObject {
+ public:
+ explicit NeanderObject(int size);
+ inline NeanderObject(v8::internal::Handle<v8::internal::Object> obj);
+ inline NeanderObject(v8::internal::Object* obj);
+ inline v8::internal::Object* get(int index);
+ inline void set(int index, v8::internal::Object* value);
+ inline v8::internal::Handle<v8::internal::JSObject> value() { return value_; }
+ int size();
+ private:
+ v8::internal::Handle<v8::internal::JSObject> value_;
+};
+
+
+// Utilities for working with neander-arrays, a simple extensible
+// array abstraction built on neander-objects.
+class NeanderArray {
+ public:
+ NeanderArray();
+ inline NeanderArray(v8::internal::Handle<v8::internal::Object> obj);
+ inline v8::internal::Handle<v8::internal::JSObject> value() {
+ return obj_.value();
+ }
+
+ void add(v8::internal::Handle<v8::internal::Object> value);
+
+ int length();
+
+ v8::internal::Object* get(int index);
+ // Change the value at an index to undefined value. If the index is
+ // out of bounds, the request is ignored. Returns the old value.
+ void set(int index, v8::internal::Object* value);
+ private:
+ NeanderObject obj_;
+};
+
+
+NeanderObject::NeanderObject(v8::internal::Handle<v8::internal::Object> obj)
+ : value_(v8::internal::Handle<v8::internal::JSObject>::cast(obj)) { }
+
+
+NeanderObject::NeanderObject(v8::internal::Object* obj)
+ : value_(v8::internal::Handle<v8::internal::JSObject>(
+ v8::internal::JSObject::cast(obj))) { }
+
+
+NeanderArray::NeanderArray(v8::internal::Handle<v8::internal::Object> obj)
+ : obj_(obj) { }
+
+
+v8::internal::Object* NeanderObject::get(int offset) {
+ ASSERT(value()->HasFastElements());
+ return v8::internal::FixedArray::cast(value()->elements())->get(offset);
+}
+
+
+void NeanderObject::set(int offset, v8::internal::Object* value) {
+ ASSERT(value_->HasFastElements());
+ v8::internal::FixedArray::cast(value_->elements())->set(offset, value);
+}
+
+
+template <typename T> static inline T ToCData(v8::internal::Object* obj) {
+ STATIC_ASSERT(sizeof(T) == sizeof(v8::internal::Address));
+ return reinterpret_cast<T>(
+ reinterpret_cast<intptr_t>(v8::internal::Proxy::cast(obj)->proxy()));
+}
+
+
+template <typename T>
+static inline v8::internal::Handle<v8::internal::Object> FromCData(T obj) {
+ STATIC_ASSERT(sizeof(T) == sizeof(v8::internal::Address));
+ return v8::internal::Factory::NewProxy(
+ reinterpret_cast<v8::internal::Address>(reinterpret_cast<intptr_t>(obj)));
+}
+
+
+v8::Arguments::Arguments(v8::Local<v8::Value> data,
+ v8::Local<v8::Object> holder,
+ v8::Local<v8::Function> callee,
+ bool is_construct_call,
+ void** values, int length)
+ : data_(data), holder_(holder), callee_(callee),
+ is_construct_call_(is_construct_call),
+ values_(values), length_(length) { }
+
+
+enum ExtensionTraversalState {
+ UNVISITED, VISITED, INSTALLED
+};
+
+
+class RegisteredExtension {
+ public:
+ explicit RegisteredExtension(Extension* extension);
+ static void Register(RegisteredExtension* that);
+ Extension* extension() { return extension_; }
+ RegisteredExtension* next() { return next_; }
+ RegisteredExtension* next_auto() { return next_auto_; }
+ ExtensionTraversalState state() { return state_; }
+ void set_state(ExtensionTraversalState value) { state_ = value; }
+ static RegisteredExtension* first_extension() { return first_extension_; }
+ private:
+ Extension* extension_;
+ RegisteredExtension* next_;
+ RegisteredExtension* next_auto_;
+ ExtensionTraversalState state_;
+ static RegisteredExtension* first_extension_;
+ static RegisteredExtension* first_auto_extension_;
+};
+
+
+class Utils {
+ public:
+ static bool ReportApiFailure(const char* location, const char* message);
+
+ static Local<FunctionTemplate> ToFunctionTemplate(NeanderObject obj);
+ static Local<ObjectTemplate> ToObjectTemplate(NeanderObject obj);
+
+ static inline Local<Context> ToLocal(
+ v8::internal::Handle<v8::internal::Context> obj);
+ static inline Local<Value> ToLocal(
+ v8::internal::Handle<v8::internal::Object> obj);
+ static inline Local<Function> ToLocal(
+ v8::internal::Handle<v8::internal::JSFunction> obj);
+ static inline Local<String> ToLocal(
+ v8::internal::Handle<v8::internal::String> obj);
+ static inline Local<Object> ToLocal(
+ v8::internal::Handle<v8::internal::JSObject> obj);
+ static inline Local<Array> ToLocal(
+ v8::internal::Handle<v8::internal::JSArray> obj);
+ static inline Local<External> ToLocal(
+ v8::internal::Handle<v8::internal::Proxy> obj);
+ static inline Local<Message> MessageToLocal(
+ v8::internal::Handle<v8::internal::Object> obj);
+ static inline Local<Number> NumberToLocal(
+ v8::internal::Handle<v8::internal::Object> obj);
+ static inline Local<Integer> IntegerToLocal(
+ v8::internal::Handle<v8::internal::Object> obj);
+ static inline Local<Uint32> Uint32ToLocal(
+ v8::internal::Handle<v8::internal::Object> obj);
+ static inline Local<FunctionTemplate> ToLocal(
+ v8::internal::Handle<v8::internal::FunctionTemplateInfo> obj);
+ static inline Local<ObjectTemplate> ToLocal(
+ v8::internal::Handle<v8::internal::ObjectTemplateInfo> obj);
+ static inline Local<Signature> ToLocal(
+ v8::internal::Handle<v8::internal::SignatureInfo> obj);
+ static inline Local<TypeSwitch> ToLocal(
+ v8::internal::Handle<v8::internal::TypeSwitchInfo> obj);
+
+ static inline v8::internal::Handle<v8::internal::TemplateInfo>
+ OpenHandle(const Template* that);
+ static inline v8::internal::Handle<v8::internal::FunctionTemplateInfo>
+ OpenHandle(const FunctionTemplate* that);
+ static inline v8::internal::Handle<v8::internal::ObjectTemplateInfo>
+ OpenHandle(const ObjectTemplate* that);
+ static inline v8::internal::Handle<v8::internal::Object>
+ OpenHandle(const Data* data);
+ static inline v8::internal::Handle<v8::internal::JSObject>
+ OpenHandle(const v8::Object* data);
+ static inline v8::internal::Handle<v8::internal::JSArray>
+ OpenHandle(const v8::Array* data);
+ static inline v8::internal::Handle<v8::internal::String>
+ OpenHandle(const String* data);
+ static inline v8::internal::Handle<v8::internal::JSFunction>
+ OpenHandle(const Script* data);
+ static inline v8::internal::Handle<v8::internal::JSFunction>
+ OpenHandle(const Function* data);
+ static inline v8::internal::Handle<v8::internal::JSObject>
+ OpenHandle(const Message* message);
+ static inline v8::internal::Handle<v8::internal::Context>
+ OpenHandle(const v8::Context* context);
+ static inline v8::internal::Handle<v8::internal::SignatureInfo>
+ OpenHandle(const v8::Signature* sig);
+ static inline v8::internal::Handle<v8::internal::TypeSwitchInfo>
+ OpenHandle(const v8::TypeSwitch* that);
+ static inline v8::internal::Handle<v8::internal::Proxy>
+ OpenHandle(const v8::External* that);
+};
+
+
+template <class T>
+static inline T* ToApi(v8::internal::Handle<v8::internal::Object> obj) {
+ return reinterpret_cast<T*>(obj.location());
+}
+
+
+template <class T>
+v8::internal::Handle<T> v8::internal::Handle<T>::EscapeFrom(
+ v8::HandleScope* scope) {
+ return Utils::OpenHandle(*scope->Close(Utils::ToLocal(*this)));
+}
+
+
+// Implementations of ToLocal
+
+#define MAKE_TO_LOCAL(Name, From, To) \
+ Local<v8::To> Utils::Name(v8::internal::Handle<v8::internal::From> obj) { \
+ ASSERT(!obj->IsTheHole()); \
+ return Local<To>(reinterpret_cast<To*>(obj.location())); \
+ }
+
+MAKE_TO_LOCAL(ToLocal, Context, Context)
+MAKE_TO_LOCAL(ToLocal, Object, Value)
+MAKE_TO_LOCAL(ToLocal, JSFunction, Function)
+MAKE_TO_LOCAL(ToLocal, String, String)
+MAKE_TO_LOCAL(ToLocal, JSObject, Object)
+MAKE_TO_LOCAL(ToLocal, JSArray, Array)
+MAKE_TO_LOCAL(ToLocal, Proxy, External)
+MAKE_TO_LOCAL(ToLocal, FunctionTemplateInfo, FunctionTemplate)
+MAKE_TO_LOCAL(ToLocal, ObjectTemplateInfo, ObjectTemplate)
+MAKE_TO_LOCAL(ToLocal, SignatureInfo, Signature)
+MAKE_TO_LOCAL(ToLocal, TypeSwitchInfo, TypeSwitch)
+MAKE_TO_LOCAL(MessageToLocal, Object, Message)
+MAKE_TO_LOCAL(NumberToLocal, Object, Number)
+MAKE_TO_LOCAL(IntegerToLocal, Object, Integer)
+MAKE_TO_LOCAL(Uint32ToLocal, Object, Uint32)
+
+#undef MAKE_TO_LOCAL
+
+
+// Implementations of OpenHandle
+
+#define MAKE_OPEN_HANDLE(From, To) \
+ v8::internal::Handle<v8::internal::To> Utils::OpenHandle(\
+ const v8::From* that) { \
+ return v8::internal::Handle<v8::internal::To>( \
+ reinterpret_cast<v8::internal::To**>(const_cast<v8::From*>(that))); \
+ }
+
+MAKE_OPEN_HANDLE(Template, TemplateInfo)
+MAKE_OPEN_HANDLE(FunctionTemplate, FunctionTemplateInfo)
+MAKE_OPEN_HANDLE(ObjectTemplate, ObjectTemplateInfo)
+MAKE_OPEN_HANDLE(Signature, SignatureInfo)
+MAKE_OPEN_HANDLE(TypeSwitch, TypeSwitchInfo)
+MAKE_OPEN_HANDLE(Data, Object)
+MAKE_OPEN_HANDLE(Object, JSObject)
+MAKE_OPEN_HANDLE(Array, JSArray)
+MAKE_OPEN_HANDLE(String, String)
+MAKE_OPEN_HANDLE(Script, JSFunction)
+MAKE_OPEN_HANDLE(Function, JSFunction)
+MAKE_OPEN_HANDLE(Message, JSObject)
+MAKE_OPEN_HANDLE(Context, Context)
+MAKE_OPEN_HANDLE(External, Proxy)
+
+#undef MAKE_OPEN_HANDLE
+
+
+namespace internal {
+
+// This class is here in order to be able to declare it a friend of
+// HandleScope. Moving these methods to be members of HandleScope would be
+// neat in some ways, but it would expose external implementation details in
+// our public header file, which is undesirable.
+//
+// There is a singleton instance of this class to hold the per-thread data.
+// For multithreaded V8 programs this data is copied in and out of storage
+// so that the currently executing thread always has its own copy of this
+// data.
+class HandleScopeImplementer {
+ public:
+
+ HandleScopeImplementer()
+ : blocks_(0),
+ entered_contexts_(0),
+ saved_contexts_(0),
+ spare_(NULL),
+ ignore_out_of_memory_(false),
+ call_depth_(0) { }
+
+ static HandleScopeImplementer* instance();
+
+ // Threading support for handle data.
+ static int ArchiveSpacePerThread();
+ static char* RestoreThread(char* from);
+ static char* ArchiveThread(char* to);
+ static void FreeThreadResources();
+
+ // Garbage collection support.
+ static void Iterate(v8::internal::ObjectVisitor* v);
+ static char* Iterate(v8::internal::ObjectVisitor* v, char* data);
+
+
+ inline internal::Object** GetSpareOrNewBlock();
+ inline void DeleteExtensions(int extensions);
+
+ inline void IncrementCallDepth() {call_depth_++;}
+ inline void DecrementCallDepth() {call_depth_--;}
+ inline bool CallDepthIsZero() { return call_depth_ == 0; }
+
+ inline void EnterContext(Handle<Object> context);
+ inline bool LeaveLastContext();
+
+ // Returns the last entered context or an empty handle if no
+ // contexts have been entered.
+ inline Handle<Object> LastEnteredContext();
+
+ inline void SaveContext(Context* context);
+ inline Context* RestoreContext();
+ inline bool HasSavedContexts();
+
+ inline List<internal::Object**>* blocks() { return &blocks_; }
+ inline bool ignore_out_of_memory() { return ignore_out_of_memory_; }
+ inline void set_ignore_out_of_memory(bool value) {
+ ignore_out_of_memory_ = value;
+ }
+
+ private:
+ void ResetAfterArchive() {
+ blocks_.Initialize(0);
+ entered_contexts_.Initialize(0);
+ saved_contexts_.Initialize(0);
+ spare_ = NULL;
+ ignore_out_of_memory_ = false;
+ call_depth_ = 0;
+ }
+
+ void Free() {
+ ASSERT(blocks_.length() == 0);
+ ASSERT(entered_contexts_.length() == 0);
+ ASSERT(saved_contexts_.length() == 0);
+ blocks_.Free();
+ entered_contexts_.Free();
+ saved_contexts_.Free();
+ if (spare_ != NULL) {
+ DeleteArray(spare_);
+ spare_ = NULL;
+ }
+ ASSERT(call_depth_ == 0);
+ }
+
+ List<internal::Object**> blocks_;
+ // Used as a stack to keep track of entered contexts.
+ List<Handle<Object> > entered_contexts_;
+ // Used as a stack to keep track of saved contexts.
+ List<Context*> saved_contexts_;
+ Object** spare_;
+ bool ignore_out_of_memory_;
+ int call_depth_;
+ // This is only used for threading support.
+ v8::ImplementationUtilities::HandleScopeData handle_scope_data_;
+
+ void IterateThis(ObjectVisitor* v);
+ char* RestoreThreadHelper(char* from);
+ char* ArchiveThreadHelper(char* to);
+
+ DISALLOW_COPY_AND_ASSIGN(HandleScopeImplementer);
+};
+
+
+static const int kHandleBlockSize = v8::internal::KB - 2; // fit in one page
+
+
+void HandleScopeImplementer::SaveContext(Context* context) {
+ saved_contexts_.Add(context);
+}
+
+
+Context* HandleScopeImplementer::RestoreContext() {
+ return saved_contexts_.RemoveLast();
+}
+
+
+bool HandleScopeImplementer::HasSavedContexts() {
+ return !saved_contexts_.is_empty();
+}
+
+
+void HandleScopeImplementer::EnterContext(Handle<Object> context) {
+ entered_contexts_.Add(context);
+}
+
+
+bool HandleScopeImplementer::LeaveLastContext() {
+ if (entered_contexts_.is_empty()) return false;
+ entered_contexts_.RemoveLast();
+ return true;
+}
+
+
+Handle<Object> HandleScopeImplementer::LastEnteredContext() {
+ if (entered_contexts_.is_empty()) return Handle<Object>::null();
+ return entered_contexts_.last();
+}
+
+
+// If there's a spare block, use it for growing the current scope.
+internal::Object** HandleScopeImplementer::GetSpareOrNewBlock() {
+ internal::Object** block = (spare_ != NULL) ?
+ spare_ :
+ NewArray<internal::Object*>(kHandleBlockSize);
+ spare_ = NULL;
+ return block;
+}
+
+
+void HandleScopeImplementer::DeleteExtensions(int extensions) {
+ if (spare_ != NULL) {
+ DeleteArray(spare_);
+ spare_ = NULL;
+ }
+ for (int i = extensions; i > 1; --i) {
+ internal::Object** block = blocks_.RemoveLast();
+#ifdef DEBUG
+ v8::ImplementationUtilities::ZapHandleRange(block,
+ &block[kHandleBlockSize]);
+#endif
+ DeleteArray(block);
+ }
+ spare_ = blocks_.RemoveLast();
+#ifdef DEBUG
+ v8::ImplementationUtilities::ZapHandleRange(
+ spare_,
+ &spare_[kHandleBlockSize]);
+#endif
+}
+
+} } // namespace v8::internal
+
+#endif // V8_API_H_