org.sonar.java.resolve.BytecodeMethodVisitor Maven / Gradle / Ivy
/*
* SonarQube Java
* Copyright (C) 2012 SonarSource
* [email protected]
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 3 of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02
*/
package org.sonar.java.resolve;
import org.objectweb.asm.AnnotationVisitor;
import org.objectweb.asm.MethodVisitor;
import org.objectweb.asm.Opcodes;
import org.sonar.java.resolve.JavaSymbol.MethodJavaSymbol;
public class BytecodeMethodVisitor extends MethodVisitor {
private final MethodJavaSymbol methodSymbol;
private final BytecodeVisitor bytecodeVisitor;
/**
* This counter counts the number of argument annotated with java.lang.Synthetic.
* This annotation is added by the asm library for arguments that are in the method descriptor but not in the method signature.
* As we rely on method signature (when available) we might end up with less parameter in the method symbol than in the method descriptor (which makes sense as we want to be
* more compliant with source than with bytecode). So we assume all synthetic params are the first parameters and count them as we visit.
* Then we substract that number from the parameter index to be compliant with what is in MethodSymbol.
*/
private int syntheticArgs;
BytecodeMethodVisitor(MethodJavaSymbol methodSymbol, BytecodeVisitor bytecodeVisitor) {
super(Opcodes.ASM5);
this.methodSymbol = methodSymbol;
this.bytecodeVisitor = bytecodeVisitor;
this.syntheticArgs = 0;
}
@Override
public AnnotationVisitor visitAnnotation(String desc, boolean visible) {
JavaType annotationType = bytecodeVisitor.convertAsmType(org.objectweb.asm.Type.getType(desc));
AnnotationInstanceResolve annotationInstance = new AnnotationInstanceResolve(annotationType.getSymbol());
methodSymbol.metadata().addAnnotation(annotationInstance);
return new BytecodeAnnotationVisitor(annotationInstance, bytecodeVisitor);
}
@Override
public AnnotationVisitor visitParameterAnnotation(int parameter, String desc, boolean visible) {
JavaType annotationType = bytecodeVisitor.convertAsmType(org.objectweb.asm.Type.getType(desc));
if (annotationType.is("java.lang.Synthetic")) {
syntheticArgs++;
} else {
AnnotationInstanceResolve annotationInstance = new AnnotationInstanceResolve(annotationType.getSymbol());
methodSymbol.getParameters().scopeSymbols().get(parameter - syntheticArgs).metadata().addAnnotation(annotationInstance);
return new BytecodeAnnotationVisitor(annotationInstance, bytecodeVisitor);
}
return null;
}
}