/***
* ASM Guide
* Copyright (c) 2007 Eric Bruneton
* 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 holders 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 OWNER 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 ch7.sec2;
import static org.objectweb.asm.Opcodes.ACC_PUBLIC;
import static org.objectweb.asm.Opcodes.ALOAD;
import static org.objectweb.asm.Opcodes.CHECKCAST;
import static org.objectweb.asm.Opcodes.INVOKEVIRTUAL;
import static org.objectweb.asm.Opcodes.IRETURN;
import org.objectweb.asm.ClassAdapter;
import org.objectweb.asm.ClassVisitor;
import org.objectweb.asm.MethodVisitor;
import org.objectweb.asm.commons.AnalyzerAdapter;
import org.objectweb.asm.util.TraceMethodVisitor;
import util.AbstractTestCase;
/**
* ASM Guide example test class.
*
* @author Eric Bruneton
*/
public class RemoveUnusedCastAdapterTest extends AbstractTestCase {
public void test() {
TraceMethodVisitor tmv = new TraceMethodVisitor(null);
RemoveUnusedCastAdapter rc = new RemoveUnusedCastAdapter(tmv);
AnalyzerAdapter aa = new AnalyzerAdapter("C", ACC_PUBLIC, "m",
"(Ljava/lang/Integer;)I", rc);
rc.aa = aa;
aa.visitCode();
aa.visitVarInsn(ALOAD, 1);
aa.visitTypeInsn(CHECKCAST, "java/lang/Number");
aa.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Number", "intValue",
"()I");
aa.visitInsn(IRETURN);
aa.visitMaxs(1, 2);
aa.visitEnd();
checkMethod(tmv);
}
protected void checkMethod(TraceMethodVisitor tmv) {
TraceMethodVisitor mv = new TraceMethodVisitor(null);
mv.visitCode();
mv.visitVarInsn(ALOAD, 1);
mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Number", "intValue",
"()I");
mv.visitInsn(IRETURN);
mv.visitMaxs(1, 2);
mv.visitEnd();
assertEquals(mv, tmv);
}
@Override
protected ClassVisitor getClassAdapter(final ClassVisitor cv) {
return new ClassAdapter(cv) {
private String owner;
@Override
public void visit(int version, int access, String name,
String signature, String superName, String[] interfaces) {
cv.visit(version, access, name, signature, superName,
interfaces);
owner = name;
}
@Override
public MethodVisitor visitMethod(int access, String name,
String desc, String signature, String[] exceptions) {
RemoveUnusedCastAdapter rc = new RemoveUnusedCastAdapter(cv
.visitMethod(access, name, desc, signature, exceptions));
AnalyzerAdapter aa = new AnalyzerAdapter(owner, access, name,
desc, rc);
rc.aa = aa;
return aa;
}
};
}
}