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/*
* de.unkrig.commons - A general-purpose Java class library
*
* Copyright (c) 2011, Arno Unkrig
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification, are permitted provided that the
* following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the
* following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the
* following disclaimer in the documentation and/or other materials provided with the distribution.
* 3. Neither the name of the copyright holder nor the names of its contributors may be used to endorse or promote
* products derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package de.unkrig.commons.asm;
import org.objectweb.asm.Type;
import org.objectweb.asm.signature.SignatureReader;
import org.objectweb.asm.signature.SignatureWriter;
import org.objectweb.asm.tree.MethodNode;
import org.objectweb.asm.util.TraceSignatureVisitor;
import de.unkrig.commons.nullanalysis.Nullable;
/**
* Utility class for simple handling of class/method descriptors/signatures.
*/
public final
class Signature {
private
Signature() {}
/**
* Converts a class descriptor / signature into strings like
*
* List<T extends java.lang.Exception>
* Notice that the result does not include the accessibility.
*/
public static String
toString(String className, @Nullable String classSignature) {
if (classSignature == null) {
return className.replace('/', '.');
}
SignatureWriter sw = new SignatureWriter();
new SignatureReader(classSignature).accept(sw);
return sw.toString();
}
/**
* Converts an ASM method node into strings like
*
* Notice that the result includes neither the return type nor the accessibility.
*/
public static String
toString(MethodNode methodNode) {
return Signature.toString(methodNode.name, methodNode.desc, methodNode.signature);
}
/**
* Converts a method descriptor / signature into strings like
*
* Notice that the result includes neither the return type nor the accessibility.
*/
public static String
toString(String methodName, String methodDescriptor, @Nullable String methodSignature) {
if (methodSignature != null) {
TraceSignatureVisitor tsv = new TraceSignatureVisitor(0);
new SignatureReader(methodSignature).accept(tsv);
return methodName + tsv.getDeclaration();
}
StringBuilder sb = new StringBuilder(methodName).append('(');
Type[] ats = Type.getArgumentTypes(methodDescriptor);
if (ats.length >= 1) {
for (int i = 0;;) {
sb.append(ats[i++].getClassName());
if (i == ats.length) break;
sb.append(", ");
}
}
return sb.append(')').toString();
}
}
