| // Copyright 2013 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 "arguments.h" |
| |
| #include "vm-state-inl.h" |
| |
| namespace v8 { |
| namespace internal { |
| |
| |
| static bool Match(void* a, void* b) { |
| return a == b; |
| } |
| |
| |
| static uint32_t Hash(void* function) { |
| uintptr_t as_int = reinterpret_cast<uintptr_t>(function); |
| if (sizeof(function) == 4) return static_cast<uint32_t>(as_int); |
| uint64_t as_64 = static_cast<uint64_t>(as_int); |
| return |
| static_cast<uint32_t>(as_64 >> 32) ^ |
| static_cast<uint32_t>(as_64); |
| } |
| |
| |
| CallbackTable::CallbackTable(): map_(Match, 64) {} |
| |
| |
| bool CallbackTable::Contains(void* function) { |
| ASSERT(function != NULL); |
| return map_.Lookup(function, Hash(function), false) != NULL; |
| } |
| |
| |
| void CallbackTable::InsertCallback(Isolate* isolate, |
| void* function, |
| bool returns_void) { |
| if (function == NULL) return; |
| // Don't store for performance. |
| if (kStoreVoidFunctions != returns_void) return; |
| CallbackTable* table = isolate->callback_table(); |
| if (table == NULL) { |
| table = new CallbackTable(); |
| isolate->set_callback_table(table); |
| } |
| typedef HashMap::Entry Entry; |
| Entry* entry = table->map_.Lookup(function, Hash(function), true); |
| ASSERT(entry != NULL); |
| ASSERT(entry->value == NULL || entry->value == function); |
| entry->value = function; |
| } |
| |
| |
| template<typename T> |
| template<typename V> |
| v8::Handle<V> CustomArguments<T>::GetReturnValue(Isolate* isolate) { |
| // Check the ReturnValue. |
| Object** handle = &this->end()[kReturnValueOffset]; |
| // Nothing was set, return empty handle as per previous behaviour. |
| if ((*handle)->IsTheHole()) return v8::Handle<V>(); |
| return Utils::Convert<Object, V>(Handle<Object>(handle)); |
| } |
| |
| |
| v8::Handle<v8::Value> FunctionCallbackArguments::Call(InvocationCallback f) { |
| Isolate* isolate = this->isolate(); |
| void* f_as_void = CallbackTable::FunctionToVoidPtr(f); |
| bool new_style = CallbackTable::ReturnsVoid(isolate, f_as_void); |
| VMState<EXTERNAL> state(isolate); |
| ExternalCallbackScope call_scope(isolate, FUNCTION_ADDR(f)); |
| if (new_style) { |
| FunctionCallback c = reinterpret_cast<FunctionCallback>(f); |
| FunctionCallbackInfo<v8::Value> info(end(), |
| argv_, |
| argc_, |
| is_construct_call_); |
| c(info); |
| } else { |
| v8::Arguments args(end(), |
| argv_, |
| argc_, |
| is_construct_call_); |
| v8::Handle<v8::Value> return_value = f(args); |
| if (!return_value.IsEmpty()) return return_value; |
| } |
| return GetReturnValue<v8::Value>(isolate); |
| } |
| |
| |
| #define WRITE_CALL_0(OldFunction, NewFunction, ReturnValue) \ |
| v8::Handle<ReturnValue> PropertyCallbackArguments::Call(OldFunction f) { \ |
| Isolate* isolate = this->isolate(); \ |
| void* f_as_void = CallbackTable::FunctionToVoidPtr(f); \ |
| bool new_style = CallbackTable::ReturnsVoid(isolate, f_as_void); \ |
| VMState<EXTERNAL> state(isolate); \ |
| ExternalCallbackScope call_scope(isolate, FUNCTION_ADDR(f)); \ |
| if (new_style) { \ |
| NewFunction c = reinterpret_cast<NewFunction>(f); \ |
| PropertyCallbackInfo<ReturnValue> info(end()); \ |
| c(info); \ |
| } else { \ |
| v8::AccessorInfo info(end()); \ |
| v8::Handle<ReturnValue> return_value = f(info); \ |
| if (!return_value.IsEmpty()) return return_value; \ |
| } \ |
| return GetReturnValue<ReturnValue>(isolate); \ |
| } |
| |
| #define WRITE_CALL_1(OldFunction, NewFunction, ReturnValue, Arg1) \ |
| v8::Handle<ReturnValue> PropertyCallbackArguments::Call(OldFunction f, \ |
| Arg1 arg1) { \ |
| Isolate* isolate = this->isolate(); \ |
| void* f_as_void = CallbackTable::FunctionToVoidPtr(f); \ |
| bool new_style = CallbackTable::ReturnsVoid(isolate, f_as_void); \ |
| VMState<EXTERNAL> state(isolate); \ |
| ExternalCallbackScope call_scope(isolate, FUNCTION_ADDR(f)); \ |
| if (new_style) { \ |
| NewFunction c = reinterpret_cast<NewFunction>(f); \ |
| PropertyCallbackInfo<ReturnValue> info(end()); \ |
| c(arg1, info); \ |
| } else { \ |
| v8::AccessorInfo info(end()); \ |
| v8::Handle<ReturnValue> return_value = f(arg1, info); \ |
| if (!return_value.IsEmpty()) return return_value; \ |
| } \ |
| return GetReturnValue<ReturnValue>(isolate); \ |
| } |
| |
| #define WRITE_CALL_2(OldFunction, NewFunction, ReturnValue, Arg1, Arg2) \ |
| v8::Handle<ReturnValue> PropertyCallbackArguments::Call(OldFunction f, \ |
| Arg1 arg1, \ |
| Arg2 arg2) { \ |
| Isolate* isolate = this->isolate(); \ |
| void* f_as_void = CallbackTable::FunctionToVoidPtr(f); \ |
| bool new_style = CallbackTable::ReturnsVoid(isolate, f_as_void); \ |
| VMState<EXTERNAL> state(isolate); \ |
| ExternalCallbackScope call_scope(isolate, FUNCTION_ADDR(f)); \ |
| if (new_style) { \ |
| NewFunction c = reinterpret_cast<NewFunction>(f); \ |
| PropertyCallbackInfo<ReturnValue> info(end()); \ |
| c(arg1, arg2, info); \ |
| } else { \ |
| v8::AccessorInfo info(end()); \ |
| v8::Handle<ReturnValue> return_value = f(arg1, arg2, info); \ |
| if (!return_value.IsEmpty()) return return_value; \ |
| } \ |
| return GetReturnValue<ReturnValue>(isolate); \ |
| } |
| |
| #define WRITE_CALL_2_VOID(OldFunction, NewFunction, ReturnValue, Arg1, Arg2) \ |
| void PropertyCallbackArguments::Call(OldFunction f, \ |
| Arg1 arg1, \ |
| Arg2 arg2) { \ |
| Isolate* isolate = this->isolate(); \ |
| void* f_as_void = CallbackTable::FunctionToVoidPtr(f); \ |
| bool new_style = CallbackTable::ReturnsVoid(isolate, f_as_void); \ |
| VMState<EXTERNAL> state(isolate); \ |
| ExternalCallbackScope call_scope(isolate, FUNCTION_ADDR(f)); \ |
| if (new_style) { \ |
| NewFunction c = reinterpret_cast<NewFunction>(f); \ |
| PropertyCallbackInfo<ReturnValue> info(end()); \ |
| c(arg1, arg2, info); \ |
| } else { \ |
| v8::AccessorInfo info(end()); \ |
| f(arg1, arg2, info); \ |
| } \ |
| } |
| |
| FOR_EACH_CALLBACK_TABLE_MAPPING_0(WRITE_CALL_0) |
| FOR_EACH_CALLBACK_TABLE_MAPPING_1(WRITE_CALL_1) |
| FOR_EACH_CALLBACK_TABLE_MAPPING_2(WRITE_CALL_2) |
| FOR_EACH_CALLBACK_TABLE_MAPPING_2_VOID_RETURN(WRITE_CALL_2_VOID) |
| |
| #undef WRITE_CALL_0 |
| #undef WRITE_CALL_1 |
| #undef WRITE_CALL_2 |
| #undef WRITE_CALL_2_VOID |
| |
| |
| } } // namespace v8::internal |
| |