com.jcoverage.coverage.asm.AsmClassInstrumenter.java Source code

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Here is the source code for com.jcoverage.coverage.asm.AsmClassInstrumenter.java

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/**
 * Copyright (C)2004 dGIC Corporation.
 *
 * This file is part of djUnit plugin.
 *
 * djUnit plugin is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published
 * by the Free Software Foundation; either version 2 of the License,
 * or (at your option) any later version.
 *
 * djUnit plugin 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
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with djUnit plugin; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
 * USA
 *
 */
package com.jcoverage.coverage.asm;

import java.util.Set;

import jp.co.dgic.testing.common.virtualmock.InternalMockObjectManager;

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

import com.jcoverage.coverage.InstrumentData;

public class AsmClassInstrumenter extends ClassAdapter {

    private InstrumentData instrumentData;
    private String className;

    // version 0.8.5
    private static final String ENUM_DEFAULT_METHOD_VALUES = "values";
    private static final String ENUM_DEFAULT_METHOD_VALUEOF = "valueOf";
    private boolean isEnum = false;
    private Set finallyLines;

    public boolean isEnum() {
        return isEnum;
    }

    public void setEnum(boolean isEnum) {
        this.isEnum = isEnum;
    }

    public void setFinallyLines(Set lines) {
        this.finallyLines = lines;
    }

    public String getClassName() {
        return this.className;
    }

    public AsmClassInstrumenter(ClassVisitor cv) {
        super(cv);
    }

    public InstrumentData getInstrumentData() {
        return instrumentData;
    }

    public void visit(int version, int access, String name, String signature, String superName,
            String[] interfaces) {

        this.className = name.replace('/', '.');
        this.instrumentData = new InstrumentData(className);

        super.visit(version, access, name, signature, superName, interfaces);
    }

    public void visitSource(String source, String debug) {
        super.visitSource(source, debug);
        instrumentData.setSourceFileName(source);
    }

    public MethodVisitor visitMethod(int access, String name, String desc, String signature, String[] exceptions) {

        if ((access & Opcodes.ACC_BRIDGE) == Opcodes.ACC_BRIDGE) {
            InternalMockObjectManager.printConsole("#################################################");
            InternalMockObjectManager.printConsole("#### found Bridge method [" + name + "]");
            InternalMockObjectManager.printConsole("#################################################");

            return super.visitMethod(access, name, desc, signature, exceptions);
        }

        // version 0.8.5
        // for enum
        if (isEnum() && isEnumDefaultMethod(access, name, desc)) {
            InternalMockObjectManager.printConsole("#################################################");
            InternalMockObjectManager
                    .printConsole("#### found enum default static method [" + name + "], DESC [" + desc + "]");
            InternalMockObjectManager.printConsole("#################################################");

            return super.visitMethod(access, name, desc, signature, exceptions);
        }

        MethodVisitor mv = cv.visitMethod(access, name, desc, signature, exceptions);
        instrumentData.addMethodNamesAndSignatures(name, desc);

        AsmMethodInstrumenter methodInstrumenter = new AsmMethodInstrumenter(mv, className, name, desc,
                instrumentData);
        methodInstrumenter.setFinallyLines(finallyLines);
        return methodInstrumenter;
    }

    // version 0.8.5
    private boolean isEnumDefaultMethod(int access, String name, String desc) {
        if ("<init>".equals(name))
            return true;
        if ("<clinit>".equals(name))
            return true;
        if ((access & Opcodes.ACC_STATIC) != Opcodes.ACC_STATIC)
            return false;
        if (!isEnumDefaultMethodName(name))
            return false;
        if (!isEnumDefaultMethodSignature(name, desc))
            return false;
        return true;
    }

    // version 0.8.5
    private boolean isEnumDefaultMethodName(String methodName) {
        if (ENUM_DEFAULT_METHOD_VALUES.equals(methodName))
            return true;
        if (ENUM_DEFAULT_METHOD_VALUEOF.equals(methodName))
            return true;
        return false;
    }

    // version 0.8.5
    private boolean isEnumDefaultMethodSignature(String methodName, String desc) {
        if (desc == null)
            return false;
        if (ENUM_DEFAULT_METHOD_VALUES.equals(methodName)) {
            if (desc.startsWith("()"))
                return true;
        }
        if (ENUM_DEFAULT_METHOD_VALUEOF.equals(methodName)) {
            if (desc.startsWith("(Ljava/lang/String;)"))
                return true;
        }
        return false;
    }
}