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// 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/init/v8.h"
#include "test/cctest/cctest.h"
#include "src/heap/heap.h"
#include "src/objects/objects-inl.h"
#include "src/objects/objects.h"
namespace v8 {
namespace internal {
void TestArrayBufferViewContents(
LocalContext& env, // NOLINT(runtime/references)
bool should_use_buffer) {
v8::Local<v8::Object> obj_a = v8::Local<v8::Object>::Cast(
env->Global()
->Get(env->GetIsolate()->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
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