| // Copyright (c) 2018, the R8 project authors. Please see the AUTHORS file |
| // for details. All rights reserved. Use of this source code is governed by a |
| // BSD-style license that can be found in the LICENSE file. |
| package com.android.tools.r8.references; |
| |
| import com.android.tools.r8.Keep; |
| import com.android.tools.r8.utils.ListUtils; |
| import com.android.tools.r8.utils.StringUtils; |
| import com.android.tools.r8.utils.StringUtils.BraceType; |
| import java.util.List; |
| import java.util.Objects; |
| |
| /** |
| * Reference to a method. |
| * |
| * <p>A method reference is always fully qualified with both a qualified holder type as well as its |
| * full list of formal parameters. |
| */ |
| @Keep |
| public final class MethodReference { |
| private final ClassReference holderClass; |
| private final String methodName; |
| private final List<TypeReference> formalTypes; |
| private final TypeReference returnType; |
| |
| MethodReference( |
| ClassReference holderClass, |
| String methodName, |
| List<TypeReference> formalTypes, |
| TypeReference returnType) { |
| assert holderClass != null; |
| assert methodName != null; |
| this.holderClass = holderClass; |
| this.methodName = methodName; |
| this.formalTypes = formalTypes; |
| this.returnType = returnType; |
| } |
| |
| public ClassReference getHolderClass() { |
| return holderClass; |
| } |
| |
| public String getMethodName() { |
| return methodName; |
| } |
| |
| public List<TypeReference> getFormalTypes() { |
| return formalTypes; |
| } |
| |
| public TypeReference getReturnType() { |
| return returnType; |
| } |
| |
| // Method references must implement full equality and hashcode since they are used as |
| // canonicalization keys. |
| |
| @Override |
| public boolean equals(Object o) { |
| if (this == o) { |
| return true; |
| } |
| if (!(o instanceof MethodReference)) { |
| return false; |
| } |
| MethodReference other = (MethodReference) o; |
| return holderClass.equals(other.holderClass) |
| && methodName.equals(other.methodName) |
| && formalTypes.equals(other.formalTypes) |
| && Objects.equals(returnType, other.returnType); |
| } |
| |
| @Override |
| public int hashCode() { |
| return Objects.hash(holderClass, methodName, formalTypes, returnType); |
| } |
| |
| public String getMethodDescriptor() { |
| return StringUtils.join( |
| "", ListUtils.map(getFormalTypes(), TypeReference::getDescriptor), BraceType.PARENS) |
| + (getReturnType() == null ? "V" : getReturnType().getDescriptor()); |
| } |
| |
| @Override |
| public String toString() { |
| return getHolderClass().toString() + getMethodName() + getMethodDescriptor(); |
| } |
| } |