org.evosuite.instrumentation.PutStaticMethodAdapter.java Source code

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Here is the source code for org.evosuite.instrumentation.PutStaticMethodAdapter.java

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/**
 * Copyright (C) 2011,2012 Gordon Fraser, Andrea Arcuri and EvoSuite
 * contributors
 *
 * This file is part of EvoSuite.
 *
 * EvoSuite is free software: you can redistribute it and/or modify it under the
 * terms of the GNU Public License as published by the Free Software Foundation,
 * either version 3 of the License, or (at your option) any later version.
 *
 * EvoSuite 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 Public License for more details.
 *
 * You should have received a copy of the GNU Public License along with
 * EvoSuite. If not, see <http://www.gnu.org/licenses/>.
 */
/**
 * 
 */
package org.evosuite.instrumentation;

import static org.objectweb.asm.Opcodes.INVOKESTATIC;

import org.evosuite.reset.ClassResetter;
import org.evosuite.testcase.ExecutionTracer;
import org.objectweb.asm.MethodVisitor;
import org.objectweb.asm.Opcodes;
import org.objectweb.asm.Type;

/**
 * For each PUTSTATIC we include a call to 
 * <code>ExecutionTracer.passedPutStatic(String,String)</code> passing
 * the class name and the field name of the PUTSTATIC statement.
 *
 * @author Juan Galeotti
 */
public class PutStaticMethodAdapter extends MethodVisitor {

    private static final String PASSED_PUT_STATIC = "passedPutStatic";
    private final String className;
    private final String methodName;

    /**
     * <p>Constructor for PutStaticMethodAdapter.</p>
     *
     * @param mv a {@link org.objectweb.asm.MethodVisitor} object.
     * @param className a {@link java.lang.String} object.
     * @param finalFields a {@link java.util.List} object.
     */
    public PutStaticMethodAdapter(String className, String methodName, MethodVisitor mv) {
        super(Opcodes.ASM4, mv);
        this.className = className;
        this.methodName = methodName;
    }

    /* (non-Javadoc)
     * @see org.objectweb.asm.MethodAdapter#visitFieldInsn(int, java.lang.String, java.lang.String, java.lang.String)
     */
    /** {@inheritDoc} */
    @Override
    public void visitFieldInsn(int opcode, String owner, String name, String desc) {

        if (opcode == Opcodes.PUTSTATIC && !(className.equals(owner) && methodName.equals("<clinit>"))
                && !(className.equals(owner) && methodName.equals(ClassResetter.STATIC_RESET))) {
            String executionTracerClassName = ExecutionTracer.class.getName().replace(".", "/");
            String executionTracerDescriptor = Type.getMethodDescriptor(Type.VOID_TYPE, Type.getType(String.class),
                    Type.getType(String.class));

            String classNameWithDots = owner.replace("/", ".");
            super.visitLdcInsn(classNameWithDots);
            super.visitLdcInsn(name);
            super.visitMethodInsn(INVOKESTATIC, executionTracerClassName, PASSED_PUT_STATIC,
                    executionTracerDescriptor);
        }
        super.visitFieldInsn(opcode, owner, name, desc);
    }
}