132 lines
4.0 KiB
Java
132 lines
4.0 KiB
Java
/*
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* Copyright (C) 2011 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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package external.com.android.dx;
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import external.com.android.dx.rop.cst.CstMethodRef;
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import external.com.android.dx.rop.cst.CstNat;
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import external.com.android.dx.rop.cst.CstString;
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import external.com.android.dx.rop.type.Prototype;
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import java.util.List;
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/**
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* Identifies a method or constructor.
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*
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* @param <D> the type declaring this field
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* @param <R> the return type of this method
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*/
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public final class MethodId<D, R> {
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final TypeId<D> declaringType;
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final TypeId<R> returnType;
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final String name;
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final TypeList parameters;
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/** cached converted state */
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final CstNat nat;
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final CstMethodRef constant;
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MethodId(TypeId<D> declaringType, TypeId<R> returnType, String name, TypeList parameters) {
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if (declaringType == null || returnType == null || name == null || parameters == null) {
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throw new NullPointerException();
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}
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this.declaringType = declaringType;
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this.returnType = returnType;
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this.name = name;
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this.parameters = parameters;
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this.nat = new CstNat(new CstString(name), new CstString(descriptor(false)));
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this.constant = new CstMethodRef(declaringType.constant, nat);
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}
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public TypeId<D> getDeclaringType() {
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return declaringType;
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}
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public TypeId<R> getReturnType() {
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return returnType;
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}
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/**
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* Returns true if this method is a constructor for its declaring class.
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*/
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public boolean isConstructor() {
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return name.equals("<init>");
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}
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/**
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* Returns true if this method is the static initializer for its declaring class.
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*/
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public boolean isStaticInitializer() {
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return name.equals("<clinit>");
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}
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/**
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* Returns the method's name. This is "<init>" if this is a constructor
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* or "<clinit>" if a static initializer
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*/
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public String getName() {
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return name;
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}
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public List<TypeId<?>> getParameters() {
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return parameters.asList();
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}
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/**
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* Returns a descriptor like "(Ljava/lang/Class;[I)Ljava/lang/Object;".
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*/
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String descriptor(boolean includeThis) {
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StringBuilder result = new StringBuilder();
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result.append("(");
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if (includeThis) {
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result.append(declaringType.name);
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}
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for (TypeId t : parameters.types) {
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result.append(t.name);
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}
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result.append(")");
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result.append(returnType.name);
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return result.toString();
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}
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Prototype prototype(boolean includeThis) {
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return Prototype.intern(descriptor(includeThis));
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}
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@Override
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public boolean equals(Object o) {
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return o instanceof MethodId
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&& ((MethodId<?, ?>) o).declaringType.equals(declaringType)
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&& ((MethodId<?, ?>) o).name.equals(name)
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&& ((MethodId<?, ?>) o).parameters.equals(parameters)
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&& ((MethodId<?, ?>) o).returnType.equals(returnType);
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}
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@Override
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public int hashCode() {
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int result = 17;
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result = 31 * result + declaringType.hashCode();
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result = 31 * result + name.hashCode();
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result = 31 * result + parameters.hashCode();
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result = 31 * result + returnType.hashCode();
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return result;
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}
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@Override
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public String toString() {
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return declaringType + "." + name + "(" + parameters + ")";
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}
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}
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