/*
* Copyright (C) 2014 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <jni.h>
#include <vector>
#include "common_compiler_test.h"
#include "field_helper.h"
#include "mirror/art_field-inl.h"
#include "scoped_thread_state_change.h"
namespace art {
class ProxyTest : public CommonCompilerTest {
public:
// Generate a proxy class with the given name and interfaces. This is a simplification from what
// libcore does to fit to our test needs. We do not check for duplicated interfaces or methods and
// we do not declare exceptions.
mirror::Class* GenerateProxyClass(ScopedObjectAccess& soa, jobject jclass_loader,
const char* className,
const std::vector<mirror::Class*>& interfaces)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
mirror::Class* javaLangObject = class_linker_->FindSystemClass(soa.Self(), "Ljava/lang/Object;");
CHECK(javaLangObject != nullptr);
jclass javaLangClass = soa.AddLocalReference<jclass>(mirror::Class::GetJavaLangClass());
// Builds the interfaces array.
jobjectArray proxyClassInterfaces = soa.Env()->NewObjectArray(interfaces.size(), javaLangClass,
nullptr);
soa.Self()->AssertNoPendingException();
for (size_t i = 0; i < interfaces.size(); ++i) {
soa.Env()->SetObjectArrayElement(proxyClassInterfaces, i,
soa.AddLocalReference<jclass>(interfaces[i]));
}
// Builds the method array.
jsize methods_count = 3; // Object.equals, Object.hashCode and Object.toString.
for (mirror::Class* interface : interfaces) {
mirror::ObjectArray<mirror::ArtMethod>* virtual_methods = interface->GetVirtualMethods();
methods_count += (virtual_methods == nullptr) ? 0 : virtual_methods->GetLength();
}
jclass javaLangReflectArtMethod =
soa.AddLocalReference<jclass>(mirror::ArtMethod::GetJavaLangReflectArtMethod());
jobjectArray proxyClassMethods = soa.Env()->NewObjectArray(methods_count,
javaLangReflectArtMethod, nullptr);
soa.Self()->AssertNoPendingException();
// Fill the method array
mirror::ArtMethod* equalsMethod = javaLangObject->FindDeclaredVirtualMethod("equals",
"(Ljava/lang/Object;)Z");
mirror::ArtMethod* hashCodeMethod = javaLangObject->FindDeclaredVirtualMethod("hashCode",
"()I");
mirror::ArtMethod* toStringMethod = javaLangObject->FindDeclaredVirtualMethod("toString",
"()Ljava/lang/String;");
CHECK(equalsMethod != nullptr);
CHECK(hashCodeMethod != nullptr);
CHECK(toStringMethod != nullptr);
jsize array_index = 0;
// Adds Object methods.
soa.Env()->SetObjectArrayElement(proxyClassMethods, array_index++,
soa.AddLocalReference<jobject>(equalsMethod));
soa.Env()->SetObjectArrayElement(proxyClassMethods, array_index++,
soa.AddLocalReference<jobject>(hashCodeMethod));
soa.Env()->SetObjectArrayElement(proxyClassMethods, array_index++,
soa.AddLocalReference<jobject>(toStringMethod));
// Now adds all interfaces virtual methods.
for (mirror::Class* interface : interfaces) {
mirror::ObjectArray<mirror::ArtMethod>* virtual_methods = interface->GetVirtualMethods();
if (virtual_methods != nullptr) {
for (int32_t mth_index = 0; mth_index < virtual_methods->GetLength(); ++mth_index) {
mirror::ArtMethod* method = virtual_methods->Get(mth_index);
soa.Env()->SetObjectArrayElement(proxyClassMethods, array_index++,
soa.AddLocalReference<jobject>(method));
}
}
}
CHECK_EQ(array_index, methods_count);
// Builds an empty exception array.
jobjectArray proxyClassThrows = soa.Env()->NewObjectArray(0, javaLangClass, nullptr);
soa.Self()->AssertNoPendingException();
mirror::Class* proxyClass = class_linker_->CreateProxyClass(soa,
soa.Env()->NewStringUTF(className),
proxyClassInterfaces, jclass_loader,
proxyClassMethods, proxyClassThrows);
soa.Self()->AssertNoPendingException();
return proxyClass;
}
};
// Creates a proxy class and check ClassHelper works correctly.
TEST_F(ProxyTest, ProxyClassHelper) {
ScopedObjectAccess soa(Thread::Current());
jobject jclass_loader = LoadDex("Interfaces");
StackHandleScope<4> hs(soa.Self());
Handle<mirror::ClassLoader> class_loader(
hs.NewHandle(soa.Decode<mirror::ClassLoader*>(jclass_loader)));
Handle<mirror::Class> I(hs.NewHandle(
class_linker_->FindClass(soa.Self(), "LInterfaces$I;", class_loader)));
Handle<mirror::Class> J(hs.NewHandle(
class_linker_->FindClass(soa.Self(), "LInterfaces$J;", class_loader)));
ASSERT_TRUE(I.Get() != nullptr);
ASSERT_TRUE(J.Get() != nullptr);
std::vector<mirror::Class*> interfaces;
interfaces.push_back(I.Get());
interfaces.push_back(J.Get());
Handle<mirror::Class> proxy_class(hs.NewHandle(
GenerateProxyClass(soa, jclass_loader, "$Proxy1234", interfaces)));
interfaces.clear(); // Don't least possibly stale objects in the array as good practice.
ASSERT_TRUE(proxy_class.Get() != nullptr);
ASSERT_TRUE(proxy_class->IsProxyClass());
ASSERT_TRUE(proxy_class->IsInitialized());
EXPECT_EQ(2U, proxy_class->NumDirectInterfaces()); // Interfaces$I and Interfaces$J.
EXPECT_EQ(I.Get(), mirror::Class::GetDirectInterface(soa.Self(), proxy_class, 0));
EXPECT_EQ(J.Get(), mirror::Class::GetDirectInterface(soa.Self(), proxy_class, 1));
std::string temp;
const char* proxy_class_descriptor = proxy_class->GetDescriptor(&temp);
EXPECT_STREQ("L$Proxy1234;", proxy_class_descriptor);
EXPECT_EQ(nullptr, proxy_class->GetSourceFile());
}
// Creates a proxy class and check FieldHelper works correctly.
TEST_F(ProxyTest, ProxyFieldHelper) {
ScopedObjectAccess soa(Thread::Current());
jobject jclass_loader = LoadDex("Interfaces");
StackHandleScope<9> hs(soa.Self());
Handle<mirror::ClassLoader> class_loader(
hs.NewHandle(soa.Decode<mirror::ClassLoader*>(jclass_loader)));
Handle<mirror::Class> I(hs.NewHandle(
class_linker_->FindClass(soa.Self(), "LInterfaces$I;", class_loader)));
Handle<mirror::Class> J(hs.NewHandle(
class_linker_->FindClass(soa.Self(), "LInterfaces$J;", class_loader)));
ASSERT_TRUE(I.Get() != nullptr);
ASSERT_TRUE(J.Get() != nullptr);
Handle<mirror::Class> proxyClass;
{
std::vector<mirror::Class*> interfaces;
interfaces.push_back(I.Get());
interfaces.push_back(J.Get());
proxyClass = hs.NewHandle(GenerateProxyClass(soa, jclass_loader, "$Proxy1234", interfaces));
}
ASSERT_TRUE(proxyClass.Get() != nullptr);
ASSERT_TRUE(proxyClass->IsProxyClass());
ASSERT_TRUE(proxyClass->IsInitialized());
Handle<mirror::ObjectArray<mirror::ArtField>> instance_fields(
hs.NewHandle(proxyClass->GetIFields()));
EXPECT_TRUE(instance_fields.Get() == nullptr);
Handle<mirror::ObjectArray<mirror::ArtField>> static_fields(
hs.NewHandle(proxyClass->GetSFields()));
ASSERT_TRUE(static_fields.Get() != nullptr);
ASSERT_EQ(2, static_fields->GetLength());
Handle<mirror::Class> interfacesFieldClass(
hs.NewHandle(class_linker_->FindSystemClass(soa.Self(), "[Ljava/lang/Class;")));
ASSERT_TRUE(interfacesFieldClass.Get() != nullptr);
Handle<mirror::Class> throwsFieldClass(
hs.NewHandle(class_linker_->FindSystemClass(soa.Self(), "[[Ljava/lang/Class;")));
ASSERT_TRUE(throwsFieldClass.Get() != nullptr);
// Test "Class[] interfaces" field.
FieldHelper fh(hs.NewHandle(static_fields->Get(0)));
EXPECT_EQ("interfaces", std::string(fh.GetField()->GetName()));
EXPECT_EQ("[Ljava/lang/Class;", std::string(fh.GetField()->GetTypeDescriptor()));
EXPECT_EQ(interfacesFieldClass.Get(), fh.GetType());
EXPECT_EQ("L$Proxy1234;", std::string(fh.GetDeclaringClassDescriptor()));
EXPECT_FALSE(fh.GetField()->IsPrimitiveType());
// Test "Class[][] throws" field.
fh.ChangeField(static_fields->Get(1));
EXPECT_EQ("throws", std::string(fh.GetField()->GetName()));
EXPECT_EQ("[[Ljava/lang/Class;", std::string(fh.GetField()->GetTypeDescriptor()));
EXPECT_EQ(throwsFieldClass.Get(), fh.GetType());
EXPECT_EQ("L$Proxy1234;", std::string(fh.GetDeclaringClassDescriptor()));
EXPECT_FALSE(fh.GetField()->IsPrimitiveType());
}
} // namespace art