/*
* Copyright 2007 Google Inc.
*
* 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.google.test.metric.asm;
import java.util.ArrayList;
import java.util.List;
import org.objectweb.asm.signature.SignatureReader;
import org.objectweb.asm.signature.SignatureVisitor;
import com.google.test.metric.JavaType;
import com.google.test.metric.Type;
public class SignatureParser extends NoopSignatureVisitor {
interface Setter {
void set(Type type);
}
public static class TypeVisitor extends NoopSignatureVisitor {
private final Setter setter;
public TypeVisitor(Setter setter) {
this.setter = setter;
}
@Override
public SignatureVisitor visitArrayType() {
return new TypeVisitor(new Setter() {
public void set(Type type) {
setter.set(type.toArray());
}
});
}
@Override
public void visitBaseType(char descriptor) {
setter.set(JavaType.fromDesc("" + descriptor));
}
@Override
public void visitClassType(String name) {
setter.set(JavaType.fromJava(name));
}
}
private final List<Type> parameters = new ArrayList<Type>();
private Type returnType;
@Override
public SignatureVisitor visitArrayType() {
return new TypeVisitor(new Setter() {
public void set(Type type) {
parameters.add(type.toArray());
}
});
}
@Override
public void visitBaseType(char descriptor) {
parameters.add(JavaType.fromDesc("" + descriptor));
}
@Override
public void visitClassType(String name) {
parameters.add(JavaType.fromJava(name));
}
@Override
public SignatureVisitor visitParameterType() {
return this;
}
@Override
public SignatureVisitor visitReturnType() {
return new TypeVisitor(new Setter() {
public void set(Type type) {
returnType = type;
}
});
}
public List<Type> getParameters() {
return parameters;
}
public Type getReturnType() {
return returnType;
}
public static SignatureParser parse(String signature) {
SignatureParser parser = new SignatureParser();
new SignatureReader(signature).accept(parser);
return parser;
}
}