/*
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* Copyright (C) 2016 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef ART_RUNTIME_MIRROR_METHOD_TYPE_H_
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#define ART_RUNTIME_MIRROR_METHOD_TYPE_H_
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#include "object_array.h"
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#include "object.h"
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#include "string.h"
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namespace art {
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struct MethodTypeOffsets;
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namespace mirror {
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// C++ mirror of java.lang.invoke.MethodType
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class MANAGED MethodType : public Object {
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public:
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static ObjPtr<MethodType> Create(Thread* const self,
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Handle<Class> return_type,
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Handle<ObjectArray<Class>> param_types)
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REQUIRES_SHARED(Locks::mutator_lock_) REQUIRES(!Roles::uninterruptible_);
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static ObjPtr<MethodType> CloneWithoutLeadingParameter(Thread* const self,
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ObjPtr<MethodType> method_type)
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REQUIRES_SHARED(Locks::mutator_lock_);
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// Collects trailing parameter types into an array. Assumes caller
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// has checked trailing arguments are all of the same type.
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static ObjPtr<MethodType> CollectTrailingArguments(Thread* const self,
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ObjPtr<MethodType> method_type,
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ObjPtr<Class> collector_array_class,
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int32_t start_index)
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REQUIRES_SHARED(Locks::mutator_lock_);
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ObjPtr<ObjectArray<Class>> GetPTypes() REQUIRES_SHARED(Locks::mutator_lock_);
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int GetNumberOfPTypes() REQUIRES_SHARED(Locks::mutator_lock_);
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// Number of virtual registers required to hold the parameters for
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// this method type.
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size_t NumberOfVRegs() REQUIRES_SHARED(Locks::mutator_lock_);
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ObjPtr<Class> GetRType() REQUIRES_SHARED(Locks::mutator_lock_);
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// Returns true iff. |this| is an exact match for method type |target|, i.e
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// iff. they have the same return types and parameter types.
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bool IsExactMatch(ObjPtr<MethodType> target) REQUIRES_SHARED(Locks::mutator_lock_);
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// Returns true iff. |this| can be converted to match |target| method type, i.e
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// iff. they have convertible return types and parameter types.
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bool IsConvertible(ObjPtr<MethodType> target) REQUIRES_SHARED(Locks::mutator_lock_);
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// Returns the pretty descriptor for this method type, suitable for display in
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// exception messages and the like.
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std::string PrettyDescriptor() REQUIRES_SHARED(Locks::mutator_lock_);
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private:
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static MemberOffset FormOffset() {
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return MemberOffset(OFFSETOF_MEMBER(MethodType, form_));
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}
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static MemberOffset MethodDescriptorOffset() {
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return MemberOffset(OFFSETOF_MEMBER(MethodType, method_descriptor_));
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}
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static MemberOffset PTypesOffset() {
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return MemberOffset(OFFSETOF_MEMBER(MethodType, p_types_));
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}
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static MemberOffset RTypeOffset() {
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return MemberOffset(OFFSETOF_MEMBER(MethodType, r_type_));
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}
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static MemberOffset WrapAltOffset() {
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return MemberOffset(OFFSETOF_MEMBER(MethodType, wrap_alt_));
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}
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HeapReference<Object> form_; // Unused in the runtime
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HeapReference<String> method_descriptor_; // Unused in the runtime
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HeapReference<ObjectArray<Class>> p_types_;
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HeapReference<Class> r_type_;
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HeapReference<Object> wrap_alt_; // Unused in the runtime
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friend struct art::MethodTypeOffsets; // for verifying offset information
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DISALLOW_IMPLICIT_CONSTRUCTORS(MethodType);
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};
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} // namespace mirror
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} // namespace art
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#endif // ART_RUNTIME_MIRROR_METHOD_TYPE_H_
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