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/*
* Copyright (C) 2011 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.
*/
package com.android.dx.gen;
import com.android.dx.rop.cst.CstMethodRef;
import com.android.dx.rop.cst.CstNat;
import com.android.dx.rop.cst.CstString;
import com.android.dx.rop.type.Prototype;
import java.util.List;
/**
* A method or constructor.
*/
public final class MethodId<D, R> {
final Type<D> declaringType;
final Type<R> returnType;
final String name;
final TypeList parameters;
/** cached converted state */
final CstNat nat;
final CstMethodRef constant;
MethodId(Type<D> declaringType, Type<R> returnType, String name, TypeList parameters) {
if (declaringType == null || returnType == null || name == null || parameters == null) {
throw new NullPointerException();
}
this.declaringType = declaringType;
this.returnType = returnType;
this.name = name;
this.parameters = parameters;
this.nat = new CstNat(new CstString(name), new CstString(descriptor(false)));
this.constant = new CstMethodRef(declaringType.constant, nat);
}
public Type<D> getDeclaringType() {
return declaringType;
}
public Type<R> getReturnType() {
return returnType;
}
public String getName() {
return name;
}
public List<Type<?>> getParameters() {
return parameters.asList();
}
/**
* Returns a descriptor like "(Ljava/lang/Class;[I)Ljava/lang/Object;".
*/
String descriptor(boolean includeThis) {
StringBuilder result = new StringBuilder();
result.append("(");
if (includeThis) {
result.append(declaringType.name);
}
for (Type t : parameters.types) {
result.append(t.name);
}
result.append(")");
result.append(returnType.name);
return result.toString();
}
Prototype prototype(boolean includeThis) {
return Prototype.intern(descriptor(includeThis));
}
@Override public boolean equals(Object o) {
return o instanceof MethodId
&& ((MethodId<?, ?>) o).declaringType.equals(declaringType)
&& ((MethodId<?, ?>) o).name.equals(name)
&& ((MethodId<?, ?>) o).parameters.equals(parameters)
&& ((MethodId<?, ?>) o).returnType.equals(returnType);
}
@Override public int hashCode() {
int result = 17;
result = 31 * result + declaringType.hashCode();
result = 31 * result + name.hashCode();
result = 31 * result + parameters.hashCode();
result = 31 * result + returnType.hashCode();
return result;
}
@Override public String toString() {
return declaringType + "." + name + "(" + parameters + ")";
}
}
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