org.pitest.mutationtest.mocksupport.JavassistInputStreamInterceptorAdapater Maven / Gradle / Ivy

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Mutation testing system for Java.

There is a newer version: 1.16.1

/*
 * Copyright 2010 Henry Coles
 * 
 * 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 org.pitest.mutationtest.mocksupport;

import org.objectweb.asm.ClassVisitor;
import org.objectweb.asm.MethodVisitor;
import org.objectweb.asm.Opcodes;

public class JavassistInputStreamInterceptorAdapater extends ClassVisitor {

  public JavassistInputStreamInterceptorAdapater(final ClassVisitor arg0) {
    super(Opcodes.ASM4, arg0);
  }

  @Override
  public MethodVisitor visitMethod(final int access, final String name,
      final String desc, final String signature, final String[] exceptions) {
    return new JavassistInputStreamInterceptorMethodVisitor(
        this.cv.visitMethod(access, name, desc, signature, exceptions));
  }

}

class JavassistInputStreamInterceptorMethodVisitor extends MethodVisitor {

  private final static String INTERCEPTOR_CLASS = classToName(JavassistInterceptor.class);

  public JavassistInputStreamInterceptorMethodVisitor(final MethodVisitor mv) {
    super(Opcodes.ASM4, mv);
  }

  @Override
  public void visitMethodInsn(final int opcode, final String owner,
      final String name, final String desc) {
    if ((opcode == Opcodes.INVOKEINTERFACE)
        && owner.equals("javassist/ClassPath") && name.equals("openClassfile")) {
      this.mv.visitMethodInsn(Opcodes.INVOKESTATIC, INTERCEPTOR_CLASS, name,
          "(Ljava/lang/Object;Ljava/lang/String;)Ljava/io/InputStream;");
    } else {
      this.mv.visitMethodInsn(opcode, owner, name, desc);
    }

  }

  private static String classToName(final Class clazz) {
    return clazz.getName().replace(".", "/");
  }

}