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/*
* Copyright (C) 2016 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.
*/
#ifndef ART_RUNTIME_MIRROR_METHOD_TYPE_H_
#define ART_RUNTIME_MIRROR_METHOD_TYPE_H_
#include "object_array.h"
#include "object.h"
#include "string.h"
namespace art {
struct MethodTypeOffsets;
namespace mirror {
// C++ mirror of java.lang.invoke.MethodType
class MANAGED MethodType : public Object {
public:
MIRROR_CLASS("Ljava/lang/invoke/MethodType;");
static ObjPtr<MethodType> Create(Thread* const self,
Handle<Class> return_type,
Handle<ObjectArray<Class>> param_types)
REQUIRES_SHARED(Locks::mutator_lock_) REQUIRES(!Roles::uninterruptible_);
static ObjPtr<MethodType> CloneWithoutLeadingParameter(Thread* const self,
ObjPtr<MethodType> method_type)
REQUIRES_SHARED(Locks::mutator_lock_);
// Collects trailing parameter types into an array. Assumes caller
// has checked trailing arguments are all of the same type.
static ObjPtr<MethodType> CollectTrailingArguments(Thread* const self,
ObjPtr<MethodType> method_type,
ObjPtr<Class> collector_array_class,
int32_t start_index)
REQUIRES_SHARED(Locks::mutator_lock_);
ObjPtr<ObjectArray<Class>> GetPTypes() REQUIRES_SHARED(Locks::mutator_lock_);
int GetNumberOfPTypes() REQUIRES_SHARED(Locks::mutator_lock_);
// Number of virtual registers required to hold the parameters for
// this method type.
size_t NumberOfVRegs() REQUIRES_SHARED(Locks::mutator_lock_);
ObjPtr<Class> GetRType() REQUIRES_SHARED(Locks::mutator_lock_);
// Returns true iff. |this| is an exact match for method type |target|, i.e
// iff. they have the same return types and parameter types.
bool IsExactMatch(ObjPtr<MethodType> target) REQUIRES_SHARED(Locks::mutator_lock_);
// Returns true iff. |this| can be converted to match |target| method type, i.e
// iff. they have convertible return types and parameter types.
bool IsConvertible(ObjPtr<MethodType> target) REQUIRES_SHARED(Locks::mutator_lock_);
// Returns the pretty descriptor for this method type, suitable for display in
// exception messages and the like.
std::string PrettyDescriptor() REQUIRES_SHARED(Locks::mutator_lock_);
private:
static MemberOffset FormOffset() {
return MemberOffset(OFFSETOF_MEMBER(MethodType, form_));
}
static MemberOffset MethodDescriptorOffset() {
return MemberOffset(OFFSETOF_MEMBER(MethodType, method_descriptor_));
}
static MemberOffset PTypesOffset() {
return MemberOffset(OFFSETOF_MEMBER(MethodType, p_types_));
}
static MemberOffset RTypeOffset() {
return MemberOffset(OFFSETOF_MEMBER(MethodType, r_type_));
}
static MemberOffset WrapAltOffset() {
return MemberOffset(OFFSETOF_MEMBER(MethodType, wrap_alt_));
}
HeapReference<Object> form_; // Unused in the runtime
HeapReference<String> method_descriptor_; // Unused in the runtime
HeapReference<ObjectArray<Class>> p_types_;
HeapReference<Class> r_type_;
HeapReference<Object> wrap_alt_; // Unused in the runtime
friend struct art::MethodTypeOffsets; // for verifying offset information
DISALLOW_IMPLICIT_CONSTRUCTORS(MethodType);
};
} // namespace mirror
} // namespace art
#endif // ART_RUNTIME_MIRROR_METHOD_TYPE_H_
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