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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.
#ifndef V8_TEST_CCTEST_TEST_API_H_
#define V8_TEST_CCTEST_TEST_API_H_
#include "src/api/api.h"
#include "src/execution/isolate.h"
#include "src/execution/vm-state.h"
#include "test/cctest/cctest.h"
template <typename T>
static void CheckReturnValue(const T& t, i::Address callback) {
v8::ReturnValue<v8::Value> rv = t.GetReturnValue();
i::FullObjectSlot o(*reinterpret_cast<i::Address*>(&rv));
CHECK_EQ(CcTest::isolate(), t.GetIsolate());
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(t.GetIsolate());
CHECK_EQ(t.GetIsolate(), rv.GetIsolate());
CHECK((*o).IsTheHole(isolate) || (*o).IsUndefined(isolate));
// Verify reset
bool is_runtime = (*o).IsTheHole(isolate);
if (is_runtime) {
CHECK(rv.Get()->IsUndefined());
} else {
i::Handle<i::Object> v = v8::Utils::OpenHandle(*rv.Get());
CHECK_EQ(*v, *o);
}
rv.Set(true);
CHECK(!(*o).IsTheHole(isolate) && !(*o).IsUndefined(isolate));
rv.Set(v8::Local<v8::Object>());
CHECK((*o).IsTheHole(isolate) || (*o).IsUndefined(isolate));
CHECK_EQ(is_runtime, (*o).IsTheHole(isolate));
// If CPU profiler is active check that when API callback is invoked
// VMState is set to EXTERNAL.
if (isolate->is_profiling()) {
CHECK_EQ(v8::EXTERNAL, isolate->current_vm_state());
CHECK(isolate->external_callback_scope());
CHECK_EQ(callback, isolate->external_callback_scope()->callback());
}
}
template <typename T>
static void CheckInternalFieldsAreZero(v8::Local<T> value) {
CHECK_EQ(T::kInternalFieldCount, value->InternalFieldCount());
for (int i = 0; i < value->InternalFieldCount(); i++) {
CHECK_EQ(0, value->GetInternalField(i)
->Int32Value(CcTest::isolate()->GetCurrentContext())
.FromJust());
}
}
template <typename T>
struct ConvertJSValue {
static v8::Maybe<T> Get(v8::Local<v8::Value> value,
v8::Local<v8::Context> context);
};
template <>
struct ConvertJSValue<int32_t> {
static v8::Maybe<int32_t> Get(v8::Local<v8::Value> value,
v8::Local<v8::Context> context) {
return value->Int32Value(context);
}
};
template <>
struct ConvertJSValue<uint32_t> {
static v8::Maybe<uint32_t> Get(v8::Local<v8::Value> value,
v8::Local<v8::Context> context) {
return value->Uint32Value(context);
}
};
// NaNs and +/-Infinity should be 0, otherwise (modulo 2^64) - 2^63.
// Step 8 - 12 of https://heycam.github.io/webidl/#abstract-opdef-converttoint
// The int64_t and uint64_t implementations below are copied from Blink:
// https://source.chromium.org/chromium/chromium/src/+/master:third_party/blink/renderer/bindings/core/v8/v8_binding_for_core.h;l=249?q=doubletointeger&sq=&ss=chromium%2Fchromium%2Fsrc
template <>
struct ConvertJSValue<int64_t> {
static v8::Maybe<int64_t> Get(v8::Local<v8::Value> value,
v8::Local<v8::Context> context) {
v8::Maybe<double> double_value = value->NumberValue(context);
if (!double_value.IsJust()) {
return v8::Nothing<int64_t>();
}
double result = double_value.ToChecked();
if (std::isinf(result) || std::isnan(result)) {
return v8::Just(int64_t(0));
}
result = trunc(result);
constexpr uint64_t kMaxULL = std::numeric_limits<uint64_t>::max();
// -2^{64} < fmod_value < 2^{64}.
double fmod_value = fmod(result, static_cast<double>(kMaxULL));
if (fmod_value >= 0) {
if (fmod_value < pow(2, 63)) {
// 0 <= fmod_value < 2^{63}.
// 0 <= value < 2^{63}. This cast causes no loss.
return v8::Just(static_cast<int64_t>(fmod_value));
} else {
// 2^{63} <= fmod_value < 2^{64}.
// 2^{63} <= value < 2^{64}. This cast causes no loss.
return v8::Just(static_cast<int64_t>(fmod_value - pow(2, 64)));
}
}
// -2^{64} < fmod_value < 0.
// 0 < fmod_value_uint64 < 2^{64}. This cast causes no loss.
uint64_t fmod_value_uint64 = static_cast<uint64_t>(-fmod_value);
// -1 < (kMaxULL - fmod_value_uint64) < 2^{64} - 1.
// 0 < value < 2^{64}.
return v8::Just(static_cast<int64_t>(kMaxULL - fmod_value_uint64 + 1));
}
};
template <>
struct ConvertJSValue<uint64_t> {
static v8::Maybe<uint64_t> Get(v8::Local<v8::Value> value,
v8::Local<v8::Context> context) {
v8::Maybe<double> double_value = value->NumberValue(context);
if (!double_value.IsJust()) {
return v8::Nothing<uint64_t>();
}
double result = double_value.ToChecked();
if (std::isinf(result) || std::isnan(result)) {
return v8::Just(uint64_t(0));
}
result = trunc(result);
constexpr uint64_t kMaxULL = std::numeric_limits<uint64_t>::max();
// -2^{64} < fmod_value < 2^{64}.
double fmod_value = fmod(result, static_cast<double>(kMaxULL));
if (fmod_value >= 0) {
return v8::Just(static_cast<uint64_t>(fmod_value));
}
// -2^{64} < fmod_value < 0.
// 0 < fmod_value_uint64 < 2^{64}. This cast causes no loss.
uint64_t fmod_value_uint64 = static_cast<uint64_t>(-fmod_value);
// -1 < (kMaxULL - fmod_value_uint64) < 2^{64} - 1.
// 0 < value < 2^{64}.
return v8::Just(static_cast<uint64_t>(kMaxULL - fmod_value_uint64 + 1));
}
};
template <>
struct ConvertJSValue<v8::BigInt> {
static v8::Maybe<v8::Local<v8::BigInt>> Get(v8::Local<v8::Value> value,
v8::Local<v8::Context> context) {
if (value->IsBigInt()) {
return v8::Just(value.As<v8::BigInt>());
}
return v8::Nothing<v8::Local<v8::BigInt>>();
}
};
template <>
struct ConvertJSValue<float> {
static v8::Maybe<float> Get(v8::Local<v8::Value> value,
v8::Local<v8::Context> context) {
v8::Maybe<double> val = value->NumberValue(context);
if (val.IsNothing()) return v8::Nothing<float>();
return v8::Just(static_cast<float>(val.ToChecked()));
}
};
template <>
struct ConvertJSValue<double> {
static v8::Maybe<double> Get(v8::Local<v8::Value> value,
v8::Local<v8::Context> context) {
return value->NumberValue(context);
}
};
template <>
struct ConvertJSValue<bool> {
static v8::Maybe<bool> Get(v8::Local<v8::Value> value,
v8::Local<v8::Context> context) {
return v8::Just<bool>(value->BooleanValue(CcTest::isolate()));
}
};
#endif // V8_TEST_CCTEST_TEST_API_H_
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