test-api.cc

Google浏览器V8内核代码

  LocalContext env;
  env->Global()->Set(v8_str("obj"),
                     templ->GetFunction()->NewInstance());
  CHECK_EQ(echo_named_call_count, 0);
  v8_compile("obj.x")->Run();
  CHECK_EQ(echo_named_call_count, 1);
  const char* code = "var str = 'oddle'; obj[str] + obj.poddle;";
  v8::Handle<Value> str = CompileRun(code);
  String::AsciiValue value(str);
  CHECK_EQ(*value, "oddlepoddle");
  // Check default behavior
  CHECK_EQ(v8_compile("obj.flob = 10;")->Run()->Int32Value(), 10);
  CHECK(v8_compile("'myProperty' in obj")->Run()->BooleanValue());
  CHECK(v8_compile("delete obj.myProperty")->Run()->BooleanValue());
}


int echo_indexed_call_count = 0;


static v8::Handle<Value> EchoIndexedProperty(uint32_t index,
                                             const AccessorInfo& info) {
  ApiTestFuzzer::Fuzz();
  CHECK_EQ(v8_num(637), info.Data());
  echo_indexed_call_count++;
  return v8_num(index);
}


THREADED_TEST(IndexedPropertyHandlerGetter) {
  v8::HandleScope scope;
  v8::Handle<v8::FunctionTemplate> templ = v8::FunctionTemplate::New();
  templ->InstanceTemplate()->SetIndexedPropertyHandler(EchoIndexedProperty,
                                                       0, 0, 0, 0,
                                                       v8_num(637));
  LocalContext env;
  env->Global()->Set(v8_str("obj"),
                     templ->GetFunction()->NewInstance());
  Local<Script> script = v8_compile("obj[900]");
  CHECK_EQ(script->Run()->Int32Value(), 900);
}


v8::Handle<v8::Object> bottom;

static v8::Handle<Value> CheckThisIndexedPropertyHandler(
    uint32_t index,
    const AccessorInfo& info) {
  ApiTestFuzzer::Fuzz();
  CHECK(info.This()->Equals(bottom));
  return v8::Handle<Value>();
}

static v8::Handle<Value> CheckThisNamedPropertyHandler(
    Local<String> name,
    const AccessorInfo& info) {
  ApiTestFuzzer::Fuzz();
  CHECK(info.This()->Equals(bottom));
  return v8::Handle<Value>();
}


v8::Handle<Value> CheckThisIndexedPropertySetter(uint32_t index,
                                                 Local<Value> value,
                                                 const AccessorInfo& info) {
  ApiTestFuzzer::Fuzz();
  CHECK(info.This()->Equals(bottom));
  return v8::Handle<Value>();
}


v8::Handle<Value> CheckThisNamedPropertySetter(Local<String> property,
                                               Local<Value> value,
                                               const AccessorInfo& info) {
  ApiTestFuzzer::Fuzz();
  CHECK(info.This()->Equals(bottom));
  return v8::Handle<Value>();
}

v8::Handle<v8::Boolean> CheckThisIndexedPropertyQuery(
    uint32_t index,
    const AccessorInfo& info) {
  ApiTestFuzzer::Fuzz();
  CHECK(info.This()->Equals(bottom));
  return v8::Handle<v8::Boolean>();
}


v8::Handle<v8::Boolean> CheckThisNamedPropertyQuery(Local<String> property,
                                                    const AccessorInfo& info) {
  ApiTestFuzzer::Fuzz();
  CHECK(info.This()->Equals(bottom));
  return v8::Handle<v8::Boolean>();
}


v8::Handle<v8::Boolean> CheckThisIndexedPropertyDeleter(
    uint32_t index,
    const AccessorInfo& info) {
  ApiTestFuzzer::Fuzz();
  CHECK(info.This()->Equals(bottom));
  return v8::Handle<v8::Boolean>();
}


v8::Handle<v8::Boolean> CheckThisNamedPropertyDeleter(
    Local<String> property,
    const AccessorInfo& info) {
  ApiTestFuzzer::Fuzz();
  CHECK(info.This()->Equals(bottom));
  return v8::Handle<v8::Boolean>();
}


v8::Handle<v8::Array> CheckThisIndexedPropertyEnumerator(
    const AccessorInfo& info) {
  ApiTestFuzzer::Fuzz();
  CHECK(info.This()->Equals(bottom));
  return v8::Handle<v8::Array>();
}


v8::Handle<v8::Array> CheckThisNamedPropertyEnumerator(
    const AccessorInfo& info) {
  ApiTestFuzzer::Fuzz();
  CHECK(info.This()->Equals(bottom));
  return v8::Handle<v8::Array>();
}


THREADED_TEST(PropertyHandlerInPrototype) {
  v8::HandleScope scope;
  LocalContext env;

  // Set up a prototype chain with three interceptors.
  v8::Handle<v8::FunctionTemplate> templ = v8::FunctionTemplate::New();
  templ->InstanceTemplate()->SetIndexedPropertyHandler(
      CheckThisIndexedPropertyHandler,
      CheckThisIndexedPropertySetter,
      CheckThisIndexedPropertyQuery,
      CheckThisIndexedPropertyDeleter,
      CheckThisIndexedPropertyEnumerator);

  templ->InstanceTemplate()->SetNamedPropertyHandler(
      CheckThisNamedPropertyHandler,
      CheckThisNamedPropertySetter,
      CheckThisNamedPropertyQuery,
      CheckThisNamedPropertyDeleter,
      CheckThisNamedPropertyEnumerator);

  bottom = templ->GetFunction()->NewInstance();
  Local<v8::Object> top = templ->GetFunction()->NewInstance();
  Local<v8::Object> middle = templ->GetFunction()->NewInstance();

  bottom->Set(v8_str("__proto__"), middle);
  middle->Set(v8_str("__proto__"), top);
  env->Global()->Set(v8_str("obj"), bottom);

  // Indexed and named get.
  Script::Compile(v8_str("obj[0]"))->Run();
  Script::Compile(v8_str("obj.x"))->Run();

  // Indexed and named set.
  Script::Compile(v8_str("obj[1] = 42"))->Run();
  Script::Compile(v8_str("obj.y = 42"))->Run();

  // Indexed and named query.
  Script::Compile(v8_str("0 in obj"))->Run();
  Script::Compile(v8_str("'x' in obj"))->Run();

  // Indexed and named deleter.
  Script::Compile(v8_str("delete obj[0]"))->Run();
  Script::Compile(v8_str("delete obj.x"))->Run();

  // Enumerators.
  Script::Compile(v8_str("for (var p in obj) ;"))->Run();
}


v8::Handle<Value> pre_post_global;

static v8::Handle<Value> PrePropertyHandlerGet(Local<String> key,
                                               const AccessorInfo& info) {
  ApiTestFuzzer::Fuzz();
  CHECK(info.This()->Equals(pre_post_global));
  CHECK(info.Holder()->Equals(pre_post_global));
  if (v8_str("pre")->Equals(key)) {
    return v8_str("PrePropertyHandler: pre");
  }
  return v8::Handle<String>();
}


static v8::Handle<v8::Boolean> PrePropertyHandlerHas(Local<String> key,
                                                     const AccessorInfo&) {
  if (v8_str("pre")->Equals(key)) {
    return v8::True();
  }

  return v8::Handle<v8::Boolean>();  // do not intercept the call
}


THREADED_TEST(PrePropertyHandler) {
  v8::HandleScope scope;
  v8::Handle<v8::FunctionTemplate> desc = v8::FunctionTemplate::New();
  desc->InstanceTemplate()->SetNamedPropertyHandler(PrePropertyHandlerGet,
                                                    0,
                                                    PrePropertyHandlerHas);
  LocalContext env(NULL, desc->InstanceTemplate());
  pre_post_global = env->Global();
  Script::Compile(v8_str(
      "var pre = 'Object: pre'; var on = 'Object: on';"))->Run();
  v8::Handle<Value> result_pre = Script::Compile(v8_str("pre"))->Run();
  CHECK_EQ(v8_str("PrePropertyHandler: pre"), result_pre);
  v8::Handle<Value> result_on = Script::Compile(v8_str("on"))->Run();
  CHECK_EQ(v8_str("Object: on"), result_on);
  v8::Handle<Value> result_post = Script::Compile(v8_str("post"))->Run();
  CHECK(result_post.IsEmpty());
}


v8::Handle<Script> call_recursively_script;
static const int kTargetRecursionDepth = 300;  // near maximum


static v8::Handle<Value> CallScriptRecursivelyCall(const v8::Arguments& args) {
  ApiTestFuzzer::Fuzz();
  int depth = args.This()->Get(v8_str("depth"))->Int32Value();
  if (depth == kTargetRecursionDepth) return v8::Undefined();
  args.This()->Set(v8_str("depth"), v8::Integer::New(depth + 1));
  return call_recursively_script->Run();
}


static v8::Handle<Value> CallFunctionRecursivelyCall(
    const v8::Arguments& args) {
  ApiTestFuzzer::Fuzz();
  int depth = args.This()->Get(v8_str("depth"))->Int32Value();
  if (depth == kTargetRecursionDepth) {
    printf("[depth = %d]\n", depth);
    return v8::Undefined();
  }
  args.This()->Set(v8_str("depth"), v8::Integer::New(depth + 1));
  v8::Handle<Value> function =
      args.This()->Get(v8_str("callFunctionRecursively"));
  return v8::Handle<Function>::Cast(function)->Call(args.This(), 0, NULL);
}


THREADED_TEST(DeepCrossLanguageRecursion) {
  v8::HandleScope scope;
  v8::Handle<v8::ObjectTemplate> global = ObjectTemplate::New();
  global->Set(v8_str("callScriptRecursively"),
              v8::FunctionTemplate::New(CallScriptRecursivelyCall));
  global->Set(v8_str("callFunctionRecursively"),
              v8::FunctionTemplate::New(CallFunctionRecursivelyCall));
  LocalContext env(NULL, global);

  env->Global()->Set(v8_str("depth"), v8::Integer::New(0));
  call_recursively_script = v8_compile("callScriptRecursively()");
  v8::Handle<Value> result = call_recursively_script->Run();
  call_recursively_script = v8::Handle<Script>();

  env->Global()->Set(v8_str("depth"), v8::Integer::New(0));
  Script::Compile(v8_str("callFunctionRecursively()"))->Run();
}


static v8::Handle<Value>
    ThrowingPropertyHandlerGet(Local<String> key, const AccessorInfo&) {
  ApiTestFuzzer::Fuzz();
  return v8::ThrowException(key);
}


static v8::Handle<Value> ThrowingPropertyHandlerSet(Local<String> key,
                                                    Local<Value>,
                                                    const AccessorInfo&) {
  v8::ThrowException(key);
  return v8::Undefined();  // not the same as v8::Handle<v8::Value>()
}


THREADED_TEST(CallbackExceptionRegression) {
  v8::HandleScope scope;
  v8::Handle<v8::ObjectTemplate> obj = ObjectTemplate::New();
  obj->SetNamedPropertyHandler(ThrowingPropertyHandlerGet,
                               ThrowingPropertyHandlerSet);
  LocalContext env;
  env->Global()->Set(v8_str("obj"), obj->NewInstance());
  v8::Handle<Value> otto = Script::Compile(v8_str(
      "try { with (obj) { otto; } } catch (e) { e; }"))->Run();
  CHECK_EQ(v8_str("otto"), otto);
  v8::Handle<Value> netto = Script::Compile(v8_str(
      "try { with (obj) { netto = 4; } } catch (e) { e; }"))->Run();
  CHECK_EQ(v8_str("netto"), netto);
}


static v8::Handle<Value> ThrowingGetAccessor(Local<String> name,
                                             const AccessorInfo& info) {
  ApiTestFuzzer::Fuzz();
  return v8::ThrowException(v8_str("g"));
}


static void ThrowingSetAccessor(Local<String> name,
                                Local<Value> value,
                                const AccessorInfo& info) {
  v8::ThrowException(value);
}


THREADED_TEST(Regress1054726) {
  v8::HandleScope scope;
  v8::Handle<v8::ObjectTemplate> obj = ObjectTemplate::New();
  obj->SetAccessor(v8_str("x"),
                   ThrowingGetAccessor,
                   ThrowingSetAccessor,
                   Local<Value>());

  LocalContext env;
  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::New(
      "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);
}


THREADED_TEST(FunctionPrototype) {
  v8::HandleScope scope;
  Local<v8::FunctionTemplate> Foo = v8::FunctionTemplate::New();
  Foo->PrototypeTemplate()->Set(v8_str("plak"), v8_num(321));
  LocalContext env;
  env->Global()->Set(v8_str("Foo"), Foo->GetFunction());
  Local<Script> script = Script::Compile(v8_str("Foo.prototype.plak"));
  CHECK_EQ(script->Run()->Int32Value(), 321);
}


THREADED_TEST(InternalFields) {
  v8::HandleScope scope;
  Local<v8::FunctionTemplate> templ = v8::FunctionTemplate::New();
  Local<v8::ObjectTemplate> instance_templ = templ->InstanceTemplate();
  instance_templ->SetInternalFieldCount(1);
  LocalContext env(0, instance_templ);
  CHECK_EQ(1, env->Global()->InternalFieldCount());

  Local<v8::Object> obj = templ->GetFunction()->NewInstance();
  CHECK_EQ(1, obj->InternalFieldCount());
  CHECK(obj->GetInternalField(0)->IsUndefined());
  obj->SetInternalField(0, v8_num(17));
  CHECK_EQ(17, obj->GetInternalField(0)->Int32Value());
}


THREADED_TEST(External) {
  v8::HandleScope scope;
  int x = 3;
  Local<v8::External> ext = v8::External::New(&x);
  LocalContext env;
  env->Global()->Set(v8_str("ext"), ext);
  Local<Value> reext_obj = Script::Compile(v8_str("this.ext"))->Run();
  v8::Handle<v8::External> reext = v8::Handle<v8::External>::Cast(reext_obj);
  int* ptr = static_cast<int*>(reext->Value());
  CHECK_EQ(x, 3);
  *ptr = 10;
  CHECK_EQ(x, 10);
}


THREADED_TEST(GlobalHandle) {
  v8::Persistent<String> global;
  {
    v8::HandleScope scope;
    Local<String> str = v8_str("str");
    global = v8::Persistent<String>::New(str);
  }
  CHECK_EQ(global->Length(), 3);
  global.Dispose();
}


THREADED_TEST(ScriptException) {
  v8::HandleScope scope;
  LocalContext env;
  Local<Script> script = Script::Compile(v8_str("throw 'panama!';"));
  v8::TryCatch try_catch;
  Local<Value> result = script->Run();
  CHECK(result.IsEmpty());