// 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/heap/heap.h" #include "src/objects-inl.h" #include "src/objects.h" namespace v8 { namespace 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()); } void TestSpeciesProtector(char* code, bool invalidates_species_protector = true) { v8::Isolate::CreateParams create_params; create_params.array_buffer_allocator = CcTest::array_buffer_allocator(); std::string typed_array_constructors[] = { #define TYPED_ARRAY_CTOR(Type, type, TYPE, ctype) #Type "Array", TYPED_ARRAYS(TYPED_ARRAY_CTOR) #undef TYPED_ARRAY_CTOR }; for (auto& constructor : typed_array_constructors) { v8::Isolate* isolate = v8::Isolate::New(create_params); isolate->Enter(); { LocalContext context(isolate); v8::HandleScope scope(isolate); v8::TryCatch try_catch(isolate); CompileRun(("let x = new " + constructor + "();").c_str()); CompileRun(("let constructor = " + constructor + ";").c_str()); v8::Local<v8::Value> constructor_obj = CompileRun(constructor.c_str()); CHECK_EQ(constructor_obj, CompileRun("x.slice().constructor")); CHECK_EQ(constructor_obj, CompileRun("x.subarray().constructor")); CHECK_EQ(constructor_obj, CompileRun("x.map(()=>{}).constructor")); std::string decl = "class MyTypedArray extends " + constructor + " { }"; CompileRun(decl.c_str()); v8::internal::Isolate* i_isolate = reinterpret_cast<v8::internal::Isolate*>(isolate); CHECK(i_isolate->IsTypedArraySpeciesLookupChainIntact()); CompileRun(code); if (invalidates_species_protector) { CHECK(!i_isolate->IsTypedArraySpeciesLookupChainIntact()); } else { CHECK(i_isolate->IsTypedArraySpeciesLookupChainIntact()); } v8::Local<v8::Value> my_typed_array = CompileRun("MyTypedArray"); CHECK_EQ(my_typed_array, CompileRun("x.slice().constructor")); CHECK_EQ(my_typed_array, CompileRun("x.subarray().constructor")); CHECK_EQ(my_typed_array, CompileRun("x.map(()=>{}).constructor")); } isolate->Exit(); isolate->Dispose(); } } UNINITIALIZED_TEST(SpeciesConstructor) { char code[] = "x.constructor = MyTypedArray"; TestSpeciesProtector(code); } UNINITIALIZED_TEST(SpeciesConstructorAccessor) { char code[] = "Object.defineProperty(x, 'constructor',{get() {return MyTypedArray;}})"; TestSpeciesProtector(code); } UNINITIALIZED_TEST(SpeciesModified) { char code[] = "Object.defineProperty(constructor, Symbol.species, " "{value:MyTypedArray})"; TestSpeciesProtector(code); } UNINITIALIZED_TEST(SpeciesParentConstructor) { char code[] = "constructor.prototype.constructor = MyTypedArray"; TestSpeciesProtector(code); } UNINITIALIZED_TEST(SpeciesProto) { char code[] = "x.__proto__ = MyTypedArray.prototype"; TestSpeciesProtector(code, false); } } // namespace internal } // namespace v8