v8/test/cctest/test-accessors.cc

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// Copyright 2012 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 <stdlib.h>
#include "v8.h"
#include "api.h"
#include "cctest.h"
#include "frames-inl.h"
#include "string-stream.h"
using ::v8::ObjectTemplate;
using ::v8::Value;
using ::v8::Context;
using ::v8::Local;
using ::v8::String;
using ::v8::Script;
using ::v8::Function;
using ::v8::Extension;
static void handle_property(Local<String> name,
const v8::PropertyCallbackInfo<v8::Value>& info) {
ApiTestFuzzer::Fuzz();
info.GetReturnValue().Set(v8_num(900));
}
static void handle_property_2(Local<String> name,
const v8::PropertyCallbackInfo<v8::Value>& info) {
ApiTestFuzzer::Fuzz();
info.GetReturnValue().Set(v8_num(902));
}
static void handle_property(const v8::FunctionCallbackInfo<v8::Value>& info) {
ApiTestFuzzer::Fuzz();
CHECK_EQ(0, info.Length());
info.GetReturnValue().Set(v8_num(907));
}
THREADED_TEST(PropertyHandler) {
LocalContext env;
v8::Isolate* isolate = env->GetIsolate();
v8::HandleScope scope(isolate);
Local<v8::FunctionTemplate> fun_templ = v8::FunctionTemplate::New(isolate);
fun_templ->InstanceTemplate()->SetAccessor(v8_str("foo"), handle_property);
Local<v8::FunctionTemplate> getter_templ =
v8::FunctionTemplate::New(isolate, handle_property);
getter_templ->SetLength(0);
fun_templ->
InstanceTemplate()->SetAccessorProperty(v8_str("bar"), getter_templ);
fun_templ->InstanceTemplate()->
SetNativeDataProperty(v8_str("instance_foo"), handle_property);
fun_templ->SetNativeDataProperty(v8_str("object_foo"), handle_property_2);
Local<Function> fun = fun_templ->GetFunction();
env->Global()->Set(v8_str("Fun"), fun);
Local<Script> getter;
Local<Script> setter;
// check function instance accessors
getter = v8_compile("var obj = new Fun(); obj.instance_foo;");
CHECK_EQ(900, getter->Run()->Int32Value());
setter = v8_compile("obj.instance_foo = 901;");
CHECK_EQ(901, setter->Run()->Int32Value());
getter = v8_compile("obj.bar;");
CHECK_EQ(907, getter->Run()->Int32Value());
setter = v8_compile("obj.bar = 908;");
CHECK_EQ(908, setter->Run()->Int32Value());
// check function static accessors
getter = v8_compile("Fun.object_foo;");
CHECK_EQ(902, getter->Run()->Int32Value());
setter = v8_compile("Fun.object_foo = 903;");
CHECK_EQ(903, setter->Run()->Int32Value());
}
static void GetIntValue(Local<String> property,
const v8::PropertyCallbackInfo<v8::Value>& info) {
ApiTestFuzzer::Fuzz();
int* value =
static_cast<int*>(v8::Handle<v8::External>::Cast(info.Data())->Value());
info.GetReturnValue().Set(v8_num(*value));
}
static void SetIntValue(Local<String> property,
Local<Value> value,
const v8::PropertyCallbackInfo<void>& info) {
int* field =
static_cast<int*>(v8::Handle<v8::External>::Cast(info.Data())->Value());
*field = value->Int32Value();
}
int foo, bar, baz;
THREADED_TEST(GlobalVariableAccess) {
foo = 0;
bar = -4;
baz = 10;
v8::Isolate* isolate = CcTest::isolate();
v8::HandleScope scope(isolate);
v8::Handle<v8::FunctionTemplate> templ = v8::FunctionTemplate::New(isolate);
templ->InstanceTemplate()->SetAccessor(
v8_str("foo"), GetIntValue, SetIntValue,
v8::External::New(isolate, &foo));
templ->InstanceTemplate()->SetAccessor(
v8_str("bar"), GetIntValue, SetIntValue,
v8::External::New(isolate, &bar));
templ->InstanceTemplate()->SetAccessor(
v8_str("baz"), GetIntValue, SetIntValue,
v8::External::New(isolate, &baz));
LocalContext env(0, templ->InstanceTemplate());
v8_compile("foo = (++bar) + baz")->Run();
CHECK_EQ(bar, -3);
CHECK_EQ(foo, 7);
}
static int x_register[2] = {0, 0};
static v8::Handle<v8::Object> x_receiver;
static v8::Handle<v8::Object> x_holder;
template<class Info>
static void XGetter(const Info& info, int offset) {
ApiTestFuzzer::Fuzz();
v8::Isolate* isolate = CcTest::isolate();
CHECK_EQ(isolate, info.GetIsolate());
CHECK_EQ(x_receiver, info.This());
info.GetReturnValue().Set(v8_num(x_register[offset]));
}
static void XGetter(Local<String> name,
const v8::PropertyCallbackInfo<v8::Value>& info) {
CHECK_EQ(x_holder, info.Holder());
XGetter(info, 0);
}
static void XGetter(const v8::FunctionCallbackInfo<v8::Value>& info) {
CHECK_EQ(x_receiver, info.Holder());
XGetter(info, 1);
}
template<class Info>
static void XSetter(Local<Value> value, const Info& info, int offset) {
v8::Isolate* isolate = CcTest::isolate();
CHECK_EQ(isolate, info.GetIsolate());
CHECK_EQ(x_holder, info.This());
CHECK_EQ(x_holder, info.Holder());
x_register[offset] = value->Int32Value();
info.GetReturnValue().Set(v8_num(-1));
}
static void XSetter(Local<String> name,
Local<Value> value,
const v8::PropertyCallbackInfo<void>& info) {
XSetter(value, info, 0);
}
static void XSetter(const v8::FunctionCallbackInfo<v8::Value>& info) {
CHECK_EQ(1, info.Length());
XSetter(info[0], info, 1);
}
THREADED_TEST(AccessorIC) {
LocalContext context;
v8::Isolate* isolate = context->GetIsolate();
v8::HandleScope scope(isolate);
v8::Handle<v8::ObjectTemplate> obj = ObjectTemplate::New(isolate);
obj->SetAccessor(v8_str("x0"), XGetter, XSetter);
obj->SetAccessorProperty(v8_str("x1"),
v8::FunctionTemplate::New(isolate, XGetter),
v8::FunctionTemplate::New(isolate, XSetter));
x_holder = obj->NewInstance();
context->Global()->Set(v8_str("holder"), x_holder);
x_receiver = v8::Object::New(isolate);
context->Global()->Set(v8_str("obj"), x_receiver);
v8::Handle<v8::Array> array = v8::Handle<v8::Array>::Cast(CompileRun(
"obj.__proto__ = holder;"
"var result = [];"
"var key_0 = 'x0';"
"var key_1 = 'x1';"
"for (var j = 0; j < 10; j++) {"
" var i = 4*j;"
" result.push(holder.x0 = i);"
" result.push(obj.x0);"
" result.push(holder.x1 = i + 1);"
" result.push(obj.x1);"
" result.push(holder[key_0] = i + 2);"
" result.push(obj[key_0]);"
" result.push(holder[key_1] = i + 3);"
" result.push(obj[key_1]);"
"}"
"result"));
CHECK_EQ(80, array->Length());
for (int i = 0; i < 80; i++) {
v8::Handle<Value> entry = array->Get(v8::Integer::New(isolate, i));
CHECK_EQ(v8::Integer::New(isolate, i/2), entry);
}
}
static void AccessorProhibitsOverwritingGetter(
Local<String> name,
const v8::PropertyCallbackInfo<v8::Value>& info) {
ApiTestFuzzer::Fuzz();
info.GetReturnValue().Set(true);
}
THREADED_TEST(AccessorProhibitsOverwriting) {
LocalContext context;
v8::Isolate* isolate = context->GetIsolate();
v8::HandleScope scope(isolate);
Local<ObjectTemplate> templ = ObjectTemplate::New(isolate);
templ->SetAccessor(v8_str("x"),
AccessorProhibitsOverwritingGetter,
0,
v8::Handle<Value>(),
v8::PROHIBITS_OVERWRITING,
v8::ReadOnly);
Local<v8::Object> instance = templ->NewInstance();
context->Global()->Set(v8_str("obj"), instance);
Local<Value> value = CompileRun(
"obj.__defineGetter__('x', function() { return false; });"
"obj.x");
CHECK(value->BooleanValue());
value = CompileRun(
"var setter_called = false;"
"obj.__defineSetter__('x', function() { setter_called = true; });"
"obj.x = 42;"
"setter_called");
CHECK(!value->BooleanValue());
value = CompileRun(
"obj2 = {};"
"obj2.__proto__ = obj;"
"obj2.__defineGetter__('x', function() { return false; });"
"obj2.x");
CHECK(value->BooleanValue());
value = CompileRun(
"var setter_called = false;"
"obj2 = {};"
"obj2.__proto__ = obj;"
"obj2.__defineSetter__('x', function() { setter_called = true; });"
"obj2.x = 42;"
"setter_called");
CHECK(!value->BooleanValue());
}
template <int C>
static void HandleAllocatingGetter(
Local<String> name,
const v8::PropertyCallbackInfo<v8::Value>& info) {
ApiTestFuzzer::Fuzz();
for (int i = 0; i < C; i++)
v8::String::NewFromUtf8(info.GetIsolate(), "foo");
info.GetReturnValue().Set(v8::String::NewFromUtf8(info.GetIsolate(), "foo"));
}
THREADED_TEST(HandleScopePop) {
LocalContext context;
v8::Isolate* isolate = context->GetIsolate();
v8::HandleScope scope(isolate);
v8::Handle<v8::ObjectTemplate> obj = ObjectTemplate::New(isolate);
obj->SetAccessor(v8_str("one"), HandleAllocatingGetter<1>);
obj->SetAccessor(v8_str("many"), HandleAllocatingGetter<1024>);
v8::Handle<v8::Object> inst = obj->NewInstance();
context->Global()->Set(v8::String::NewFromUtf8(isolate, "obj"), inst);
int count_before =
i::HandleScope::NumberOfHandles(reinterpret_cast<i::Isolate*>(isolate));
{
v8::HandleScope scope(isolate);
CompileRun(
"for (var i = 0; i < 1000; i++) {"
" obj.one;"
" obj.many;"
"}");
}
int count_after =
i::HandleScope::NumberOfHandles(reinterpret_cast<i::Isolate*>(isolate));
CHECK_EQ(count_before, count_after);
}
static void CheckAccessorArgsCorrect(
Local<String> name,
const v8::PropertyCallbackInfo<v8::Value>& info) {
CHECK(info.GetIsolate() == CcTest::isolate());
CHECK(info.This() == info.Holder());
CHECK(
info.Data()->Equals(v8::String::NewFromUtf8(CcTest::isolate(), "data")));
ApiTestFuzzer::Fuzz();
CHECK(info.GetIsolate() == CcTest::isolate());
CHECK(info.This() == info.Holder());
CHECK(
info.Data()->Equals(v8::String::NewFromUtf8(CcTest::isolate(), "data")));
CcTest::heap()->CollectAllGarbage(i::Heap::kNoGCFlags);
CHECK(info.GetIsolate() == CcTest::isolate());
CHECK(info.This() == info.Holder());
CHECK(
info.Data()->Equals(v8::String::NewFromUtf8(CcTest::isolate(), "data")));
info.GetReturnValue().Set(17);
}
THREADED_TEST(DirectCall) {
LocalContext context;
v8::Isolate* isolate = context->GetIsolate();
v8::HandleScope scope(isolate);
v8::Handle<v8::ObjectTemplate> obj = ObjectTemplate::New(isolate);
obj->SetAccessor(v8_str("xxx"),
CheckAccessorArgsCorrect,
NULL,
v8::String::NewFromUtf8(isolate, "data"));
v8::Handle<v8::Object> inst = obj->NewInstance();
context->Global()->Set(v8::String::NewFromUtf8(isolate, "obj"),
inst);
Local<Script> scr = v8::Script::Compile(
v8::String::NewFromUtf8(isolate, "obj.xxx"));
for (int i = 0; i < 10; i++) {
Local<Value> result = scr->Run();
CHECK(!result.IsEmpty());
CHECK_EQ(17, result->Int32Value());
}
}
static void EmptyGetter(Local<String> name,
const v8::PropertyCallbackInfo<v8::Value>& info) {
CheckAccessorArgsCorrect(name, info);
ApiTestFuzzer::Fuzz();
CheckAccessorArgsCorrect(name, info);
info.GetReturnValue().Set(v8::Handle<v8::Value>());
}
THREADED_TEST(EmptyResult) {
LocalContext context;
v8::Isolate* isolate = context->GetIsolate();
v8::HandleScope scope(isolate);
v8::Handle<v8::ObjectTemplate> obj = ObjectTemplate::New(isolate);
obj->SetAccessor(v8_str("xxx"), EmptyGetter, NULL,
v8::String::NewFromUtf8(isolate, "data"));
v8::Handle<v8::Object> inst = obj->NewInstance();
context->Global()->Set(v8::String::NewFromUtf8(isolate, "obj"), inst);
Local<Script> scr =
v8::Script::Compile(v8::String::NewFromUtf8(isolate, "obj.xxx"));
for (int i = 0; i < 10; i++) {
Local<Value> result = scr->Run();
CHECK(result == v8::Undefined(isolate));
}
}
THREADED_TEST(NoReuseRegress) {
// Check that the IC generated for the one test doesn't get reused
// for the other.
v8::Isolate* isolate = CcTest::isolate();
v8::HandleScope scope(isolate);
{
v8::Handle<v8::ObjectTemplate> obj = ObjectTemplate::New(isolate);
obj->SetAccessor(v8_str("xxx"), EmptyGetter, NULL,
v8::String::NewFromUtf8(isolate, "data"));
LocalContext context;
v8::Handle<v8::Object> inst = obj->NewInstance();
context->Global()->Set(v8::String::NewFromUtf8(isolate, "obj"), inst);
Local<Script> scr =
v8::Script::Compile(v8::String::NewFromUtf8(isolate, "obj.xxx"));
for (int i = 0; i < 2; i++) {
Local<Value> result = scr->Run();
CHECK(result == v8::Undefined(isolate));
}
}
{
v8::Handle<v8::ObjectTemplate> obj = ObjectTemplate::New(isolate);
obj->SetAccessor(v8_str("xxx"),
CheckAccessorArgsCorrect,
NULL,
v8::String::NewFromUtf8(isolate, "data"));
LocalContext context;
v8::Handle<v8::Object> inst = obj->NewInstance();
context->Global()->Set(v8::String::NewFromUtf8(isolate, "obj"), inst);
Local<Script> scr =
v8::Script::Compile(v8::String::NewFromUtf8(isolate, "obj.xxx"));
for (int i = 0; i < 10; i++) {
Local<Value> result = scr->Run();
CHECK(!result.IsEmpty());
CHECK_EQ(17, result->Int32Value());
}
}
}
static void ThrowingGetAccessor(
Local<String> name,
const v8::PropertyCallbackInfo<v8::Value>& info) {
ApiTestFuzzer::Fuzz();
info.GetIsolate()->ThrowException(v8_str("g"));
}
static void ThrowingSetAccessor(Local<String> name,
Local<Value> value,
const v8::PropertyCallbackInfo<void>& info) {
info.GetIsolate()->ThrowException(value);
}
THREADED_TEST(Regress1054726) {
LocalContext env;
v8::Isolate* isolate = env->GetIsolate();
v8::HandleScope scope(isolate);
v8::Handle<v8::ObjectTemplate> obj = ObjectTemplate::New(isolate);
obj->SetAccessor(v8_str("x"),
ThrowingGetAccessor,
ThrowingSetAccessor,
Local<Value>());
env->Global()->Set(v8_str("obj"), obj->NewInstance());
// Use the throwing property setter/getter in a loop to force
// the accessor ICs to be initialized.
v8::Handle<Value> result;
result = Script::Compile(v8_str(
"var result = '';"
"for (var i = 0; i < 5; i++) {"
" try { obj.x; } catch (e) { result += e; }"
"}; result"))->Run();
CHECK_EQ(v8_str("ggggg"), result);
result = Script::Compile(String::NewFromUtf8(
isolate,
"var result = '';"
"for (var i = 0; i < 5; i++) {"
" try { obj.x = i; } catch (e) { result += e; }"
"}; result"))->Run();
CHECK_EQ(v8_str("01234"), result);
}
static void AllocGetter(Local<String> name,
const v8::PropertyCallbackInfo<v8::Value>& info) {
ApiTestFuzzer::Fuzz();
info.GetReturnValue().Set(v8::Array::New(info.GetIsolate(), 1000));
}
THREADED_TEST(Gc) {
LocalContext env;
v8::Isolate* isolate = env->GetIsolate();
v8::HandleScope scope(isolate);
v8::Handle<v8::ObjectTemplate> obj = ObjectTemplate::New(isolate);
obj->SetAccessor(v8_str("xxx"), AllocGetter);
env->Global()->Set(v8_str("obj"), obj->NewInstance());
Script::Compile(String::NewFromUtf8(
isolate,
"var last = [];"
"for (var i = 0; i < 2048; i++) {"
" var result = obj.xxx;"
" result[0] = last;"
" last = result;"
"}"))->Run();
}
static void StackCheck(Local<String> name,
const v8::PropertyCallbackInfo<v8::Value>& info) {
i::StackFrameIterator iter(reinterpret_cast<i::Isolate*>(info.GetIsolate()));
for (int i = 0; !iter.done(); i++) {
i::StackFrame* frame = iter.frame();
CHECK(i != 0 || (frame->type() == i::StackFrame::EXIT));
i::Code* code = frame->LookupCode();
CHECK(code->IsCode());
i::Address pc = frame->pc();
CHECK(code->contains(pc));
iter.Advance();
}
}
THREADED_TEST(StackIteration) {
LocalContext env;
v8::Isolate* isolate = env->GetIsolate();
v8::HandleScope scope(isolate);
v8::Handle<v8::ObjectTemplate> obj = ObjectTemplate::New(isolate);
i::StringStream::ClearMentionedObjectCache(
reinterpret_cast<i::Isolate*>(isolate));
obj->SetAccessor(v8_str("xxx"), StackCheck);
env->Global()->Set(v8_str("obj"), obj->NewInstance());
Script::Compile(String::NewFromUtf8(
isolate,
"function foo() {"
" return obj.xxx;"
"}"
"for (var i = 0; i < 100; i++) {"
" foo();"
"}"))->Run();
}
static void AllocateHandles(Local<String> name,
const v8::PropertyCallbackInfo<v8::Value>& info) {
for (int i = 0; i < i::kHandleBlockSize + 1; i++) {
v8::Local<v8::Value>::New(info.GetIsolate(), name);
}
info.GetReturnValue().Set(v8::Integer::New(info.GetIsolate(), 100));
}
THREADED_TEST(HandleScopeSegment) {
// Check that we can return values past popping of handle scope
// segments.
LocalContext env;
v8::Isolate* isolate = env->GetIsolate();
v8::HandleScope scope(isolate);
v8::Handle<v8::ObjectTemplate> obj = ObjectTemplate::New(isolate);
obj->SetAccessor(v8_str("xxx"), AllocateHandles);
env->Global()->Set(v8_str("obj"), obj->NewInstance());
v8::Handle<v8::Value> result = Script::Compile(String::NewFromUtf8(
isolate,
"var result;"
"for (var i = 0; i < 4; i++)"
" result = obj.xxx;"
"result;"))->Run();
CHECK_EQ(100, result->Int32Value());
}
void JSONStringifyEnumerator(const v8::PropertyCallbackInfo<v8::Array>& info) {
v8::Handle<v8::Array> array = v8::Array::New(info.GetIsolate(), 1);
array->Set(0, v8_str("regress"));
info.GetReturnValue().Set(array);
}
void JSONStringifyGetter(Local<String> name,
const v8::PropertyCallbackInfo<v8::Value>& info) {
info.GetReturnValue().Set(v8_str("crbug-161028"));
}
THREADED_TEST(JSONStringifyNamedInterceptorObject) {
LocalContext env;
v8::Isolate* isolate = env->GetIsolate();
v8::HandleScope scope(isolate);
v8::Handle<v8::ObjectTemplate> obj = ObjectTemplate::New(isolate);
obj->SetNamedPropertyHandler(
JSONStringifyGetter, NULL, NULL, NULL, JSONStringifyEnumerator);
env->Global()->Set(v8_str("obj"), obj->NewInstance());
v8::Handle<v8::String> expected = v8_str("{\"regress\":\"crbug-161028\"}");
CHECK(CompileRun("JSON.stringify(obj)")->Equals(expected));
}
static v8::Local<v8::Context> expected_current_context;
static v8::Local<v8::Context> expected_calling_context;
static void check_contexts(const v8::FunctionCallbackInfo<v8::Value>& info) {
ApiTestFuzzer::Fuzz();
CHECK(expected_current_context == info.GetIsolate()->GetCurrentContext());
CHECK(expected_calling_context == info.GetIsolate()->GetCallingContext());
}
THREADED_TEST(AccessorPropertyCrossContext) {
LocalContext env;
v8::Isolate* isolate = env->GetIsolate();
v8::HandleScope scope(isolate);
v8::Handle<v8::Function> fun = v8::Function::New(isolate, check_contexts);
LocalContext switch_context;
switch_context->Global()->Set(v8_str("fun"), fun);
v8::TryCatch try_catch;
expected_current_context = env.local();
expected_calling_context = switch_context.local();
CompileRun(
"var o = Object.create(null, { n: { get:fun } });"
"for (var i = 0; i < 10; i++) o.n;");
CHECK(!try_catch.HasCaught());
}
THREADED_TEST(GlobalObjectAccessor) {
LocalContext env;
v8::Isolate* isolate = env->GetIsolate();
v8::HandleScope scope(isolate);
CompileRun(
"var set_value = 1;"
"Object.defineProperty(this.__proto__, 'x', {"
" get : function() { return this; },"
" set : function() { set_value = this; }"
"});"
"function getter() { return x; }"
"function setter() { x = 1; }"
"for (var i = 0; i < 4; i++) { getter(); setter(); }");
CHECK(v8::Utils::OpenHandle(*CompileRun("getter()"))->IsJSGlobalProxy());
CHECK(v8::Utils::OpenHandle(*CompileRun("set_value"))->IsJSGlobalProxy());
}