// Copyright 2015 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. #include <stdlib.h> #include "src/v8.h" #include "test/cctest/cctest.h" #include "src/api.h" #include "src/heap/heap.h" #include "src/objects.h" using namespace v8::internal; void TestArrayBufferViewContents(LocalContext& env, bool should_use_buffer) { v8::Local<v8::Object> obj_a = v8::Local<v8::Object>::Cast( env->Global() ->Get(v8::Isolate::GetCurrent()->GetCurrentContext(), v8_str("a")) .ToLocalChecked()); CHECK(obj_a->IsArrayBufferView()); v8::Local<v8::ArrayBufferView> array_buffer_view = v8::Local<v8::ArrayBufferView>::Cast(obj_a); CHECK_EQ(array_buffer_view->HasBuffer(), should_use_buffer); unsigned char contents[4] = {23, 23, 23, 23}; CHECK_EQ(sizeof(contents), array_buffer_view->CopyContents(contents, sizeof(contents))); CHECK_EQ(array_buffer_view->HasBuffer(), should_use_buffer); for (size_t i = 0; i < sizeof(contents); ++i) { CHECK_EQ(i, contents[i]); } } TEST(CopyContentsTypedArray) { LocalContext env; v8::HandleScope scope(env->GetIsolate()); CompileRun( "var a = new Uint8Array(4);" "a[0] = 0;" "a[1] = 1;" "a[2] = 2;" "a[3] = 3;"); TestArrayBufferViewContents(env, false); } TEST(CopyContentsArray) { LocalContext env; v8::HandleScope scope(env->GetIsolate()); CompileRun("var a = new Uint8Array([0, 1, 2, 3]);"); TestArrayBufferViewContents(env, false); } TEST(CopyContentsView) { LocalContext env; v8::HandleScope scope(env->GetIsolate()); CompileRun( "var b = new ArrayBuffer(6);" "var c = new Uint8Array(b);" "c[0] = -1;" "c[1] = -1;" "c[2] = 0;" "c[3] = 1;" "c[4] = 2;" "c[5] = 3;" "var a = new DataView(b, 2);"); TestArrayBufferViewContents(env, true); } TEST(AllocateNotExternal) { LocalContext env; v8::HandleScope scope(env->GetIsolate()); void* memory = reinterpret_cast<Isolate*>(env->GetIsolate()) ->array_buffer_allocator() ->Allocate(1024); v8::Local<v8::ArrayBuffer> buffer = v8::ArrayBuffer::New(env->GetIsolate(), memory, 1024, v8::ArrayBufferCreationMode::kInternalized); CHECK(!buffer->IsExternal()); CHECK_EQ(memory, buffer->GetContents().Data()); }