Example usage for org.objectweb.asm MethodVisitor visitCode

List of usage examples for org.objectweb.asm MethodVisitor visitCode

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Introduction

In this page you can find the example usage for org.objectweb.asm MethodVisitor visitCode.

Prototype

public void visitCode()

Source Link

Document

Starts the visit of the method's code, if any (i.e.

Usage

From source file:net.sourceforge.cobertura.instrument.pass3.AbstractCodeProvider.java

License:GNU General Public License

/**
 * {@inheritDoc}<br/><br/>/*from  ww w  .j  a va 2 s .co  m*/
 * <p/>
 * Generates method (named  {@link #COBERTURA_CLASSMAP_METHOD_NAME}) with such a signature:
 * __cobertura_classmap( {@link LightClassmapListener} listener).</br>
 * <p/>
 * The method informs the listener about all lines, jumps and switches found, and about all counters tracking
 * the constructions.
 */
public void generateCoberturaClassMapMethod(ClassVisitor cv, ClassMap classMap) {

    LinkedList<TouchPointDescriptor> touchPointDescriptors = new LinkedList<TouchPointDescriptor>(
            classMap.getTouchPointsInLineOrder());
    int parts = 0;
    for (int j = 0; touchPointDescriptors.size() > 0; j++) {
        List<TouchPointDescriptor> bufor = new LinkedList<TouchPointDescriptor>();
        for (int i = 0; i < 1000 && touchPointDescriptors.size() > 0; i++) {
            bufor.add(touchPointDescriptors.removeFirst());
        }
        classMapContent(cv, j, bufor);
        parts++;
    }

    MethodVisitor mv = cv.visitMethod(Opcodes.ACC_PUBLIC | Opcodes.ACC_STATIC, COBERTURA_CLASSMAP_METHOD_NAME,
            "(" + Type.getType(LightClassmapListener.class).toString() + ")V", null, null);
    mv.visitCode();
    mv.visitVarInsn(Opcodes.ALOAD, 0);

    mv.visitInsn(Opcodes.DUP);
    mv.visitLdcInsn(classMap.getClassName());
    mv.visitMethodInsn(Opcodes.INVOKEINTERFACE, CLASSMAP_LISTENER_INTERNALNAME, "setClazz",
            "(Ljava/lang/String;)V");

    if (classMap.getSource() != null) {
        mv.visitInsn(Opcodes.DUP);
        mv.visitLdcInsn(classMap.getSource());
        mv.visitMethodInsn(Opcodes.INVOKEINTERFACE, CLASSMAP_LISTENER_INTERNALNAME, "setSource",
                "(Ljava/lang/String;)V");
    }

    for (int i = 0; i < parts; i++) {
        mv.visitInsn(Opcodes.DUP);
        mv.visitMethodInsn(Opcodes.INVOKESTATIC, classMap.getClassName(),
                COBERTURA_CLASSMAP_METHOD_NAME + "_" + i,
                "(" + Type.getType(LightClassmapListener.class).toString() + ")V");
    }

    mv.visitInsn(Opcodes.POP);
    mv.visitInsn(Opcodes.RETURN);
    mv.visitMaxs(0, 0);//will be recalculated by writer
    mv.visitEnd();
}

From source file:net.sourceforge.cobertura.instrument.pass3.AbstractCodeProvider.java

License:GNU General Public License

private void classMapContent(ClassVisitor cv, int nr, List<TouchPointDescriptor> touchPointDescriptors) {
    MethodVisitor mv = cv.visitMethod(Opcodes.ACC_PUBLIC | Opcodes.ACC_STATIC,
            COBERTURA_CLASSMAP_METHOD_NAME + "_" + nr,
            "(" + Type.getType(LightClassmapListener.class).toString() + ")V", null, null);
    mv.visitCode();
    mv.visitVarInsn(Opcodes.ALOAD, 0);/* w  w w  . j a  v a2 s  .c o m*/
    for (TouchPointDescriptor tpd : touchPointDescriptors) {
        mv.visitInsn(Opcodes.DUP);
        mv.visitLdcInsn(tpd.getLineNumber());
        if (tpd instanceof LineTouchPointDescriptor) {
            mv.visitLdcInsn(((LineTouchPointDescriptor) tpd).getCounterId());
            mv.visitLdcInsn(((LineTouchPointDescriptor) tpd).getMethodName());
            mv.visitLdcInsn(((LineTouchPointDescriptor) tpd).getMethodSignature());
            mv.visitMethodInsn(Opcodes.INVOKEINTERFACE, CLASSMAP_LISTENER_INTERNALNAME, "putLineTouchPoint",
                    "(IILjava/lang/String;Ljava/lang/String;)V");
        } else if (tpd instanceof JumpTouchPointDescriptor) {
            mv.visitLdcInsn(((JumpTouchPointDescriptor) tpd).getCounterIdForTrue());
            mv.visitLdcInsn(((JumpTouchPointDescriptor) tpd).getCounterIdForFalse());
            mv.visitMethodInsn(Opcodes.INVOKEINTERFACE, CLASSMAP_LISTENER_INTERNALNAME, "putJumpTouchPoint",
                    "(III)V");
        } else if (tpd instanceof SwitchTouchPointDescriptor) {
            SwitchTouchPointDescriptor stpd = (SwitchTouchPointDescriptor) tpd;
            final String enum_sign = ((SwitchTouchPointDescriptor) tpd).getEnumType();
            if (enum_sign == null) {
                mv.visitLdcInsn(Integer.MAX_VALUE);
            } else {
                mv.visitMethodInsn(Opcodes.INVOKESTATIC, enum_sign, "values", "()[L" + enum_sign + ";");
                mv.visitInsn(Opcodes.ARRAYLENGTH);
            }
            Collection<Integer> ci = stpd.getCountersForLabels();
            mv.visitLdcInsn(ci.size());//Size of a new table
            mv.visitIntInsn(Opcodes.NEWARRAY, Opcodes.T_INT);
            int i = 0;
            for (Integer counterId : ci) {
                mv.visitInsn(Opcodes.DUP); //First for addition of items, second ad putSwitchTouchPoint parameter (or next loop iteration)
                mv.visitLdcInsn(i);
                mv.visitLdcInsn(counterId);
                mv.visitInsn(Opcodes.IASTORE);
                i++;
            }
            mv.visitMethodInsn(Opcodes.INVOKEINTERFACE, CLASSMAP_LISTENER_INTERNALNAME, "putSwitchTouchPoint",
                    "(II[I)V");
        }
    }
    mv.visitInsn(Opcodes.POP);
    mv.visitInsn(Opcodes.RETURN);
    mv.visitMaxs(0, 0);//will be recalculated by writer
    mv.visitEnd();
}

From source file:net.sourceforge.cobertura.instrument.pass3.AbstractCodeProvider.java

License:GNU General Public License

public void generateCoberturaInitMethod(ClassVisitor cv, String className, int countersCnt) {
    MethodVisitor mv = cv.visitMethod(Opcodes.ACC_PUBLIC | Opcodes.ACC_STATIC, COBERTURA_INIT_METHOD_NAME,
            "()V", null, null);
    mv.visitCode();
    generateCINITmethod(mv, className, countersCnt);
    mv.visitInsn(Opcodes.RETURN);//from  w  ww  .j  av  a2 s  .co m
    mv.visitMaxs(0, 0); //will be recalculated by writer
    mv.visitEnd();
}

From source file:net.sourceforge.cobertura.instrument.pass3.AbstractCodeProvider.java

License:GNU General Public License

public void generateCallCoberturaInitMethod(MethodVisitor mv, String className) {
    mv.visitCode(); // Since we are using the ASM Check Adapter, we need to visit the code before visiting any instructions.
    mv.visitMethodInsn(Opcodes.INVOKESTATIC, className, COBERTURA_INIT_METHOD_NAME, "()V");
}

From source file:net.sourceforge.cobertura.instrument.pass3.AtomicArrayCodeProvider.java

License:GNU General Public License

/**
 * <pre>//w  ww  . j av a 2 s. c  o  m
 * int[] __cobertura_get_and_reset_counters() {
 * int[] res = new int[counters.length()];
 * for(int i=0; i<counters.length(); i++){
 * res[i]=counters.getAndSet(i, 0);
 * }
 * return res;
 * }
 * </pre>
 */
public void generateCoberturaGetAndResetCountersMethod(ClassVisitor cv, String className) {
    MethodVisitor mv = cv.visitMethod(Opcodes.ACC_PUBLIC | Opcodes.ACC_STATIC,
            COBERTURA_GET_AND_RESET_COUNTERS_METHOD_NAME, "()[I", null, null);

    mv.visitCode();
    mv.visitFieldInsn(Opcodes.GETSTATIC, className, COBERTURA_COUNTERS_FIELD_NAME,
            COBERTURA_COUNTERS_FIELD_TYPE);
    mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/util/concurrent/atomic/AtomicIntegerArray", "length",
            "()I");
    mv.visitIntInsn(Opcodes.NEWARRAY, Opcodes.T_INT);
    mv.visitVarInsn(Opcodes.ASTORE, 0);
    mv.visitInsn(Opcodes.ICONST_0);
    mv.visitVarInsn(Opcodes.ISTORE, 1);
    Label l3 = new Label();
    mv.visitJumpInsn(Opcodes.GOTO, l3);
    Label l4 = new Label();
    mv.visitLabel(l4);
    mv.visitVarInsn(Opcodes.ALOAD, 0);
    mv.visitVarInsn(Opcodes.ILOAD, 1);
    mv.visitFieldInsn(Opcodes.GETSTATIC, className, COBERTURA_COUNTERS_FIELD_NAME,
            COBERTURA_COUNTERS_FIELD_TYPE);
    mv.visitVarInsn(Opcodes.ILOAD, 1);
    mv.visitInsn(Opcodes.ICONST_0);
    mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/util/concurrent/atomic/AtomicIntegerArray", "getAndSet",
            "(II)I");
    mv.visitInsn(Opcodes.IASTORE);
    mv.visitIincInsn(1, 1);
    mv.visitLabel(l3);
    mv.visitVarInsn(Opcodes.ILOAD, 1);
    mv.visitFieldInsn(Opcodes.GETSTATIC, className, COBERTURA_COUNTERS_FIELD_NAME,
            COBERTURA_COUNTERS_FIELD_TYPE);
    mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/util/concurrent/atomic/AtomicIntegerArray", "length",
            "()I");
    mv.visitJumpInsn(Opcodes.IF_ICMPLT, l4);
    mv.visitVarInsn(Opcodes.ALOAD, 0);
    mv.visitInsn(Opcodes.ARETURN);
    mv.visitMaxs(0, 0);//will be recalculated by writer
    mv.visitEnd();
}

From source file:net.sourceforge.cobertura.instrument.pass3.FastArrayCodeProvider.java

License:GNU General Public License

public void generateCoberturaGetAndResetCountersMethod(ClassVisitor cv, String className) {
    MethodVisitor mv = cv.visitMethod(Opcodes.ACC_PUBLIC | Opcodes.ACC_STATIC,
            COBERTURA_GET_AND_RESET_COUNTERS_METHOD_NAME, "()[I", null, null);
    mv.visitCode();
    /*cobertura_counters.*/
    mv.visitFieldInsn(Opcodes.GETSTATIC, className, COBERTURA_COUNTERS_FIELD_NAME,
            COBERTURA_COUNTERS_FIELD_TYPE);
    mv.visitVarInsn(Opcodes.ASTORE, 0);/*from ww w  .ja  v a  2s  .co m*/
    /*cobertura_counters.*/
    mv.visitFieldInsn(Opcodes.GETSTATIC, className, COBERTURA_COUNTERS_FIELD_NAME,
            COBERTURA_COUNTERS_FIELD_TYPE);
    mv.visitInsn(Opcodes.ARRAYLENGTH);

    mv.visitIntInsn(Opcodes.NEWARRAY, Opcodes.T_INT);
    mv.visitFieldInsn(Opcodes.PUTSTATIC, className, COBERTURA_COUNTERS_FIELD_NAME,
            COBERTURA_COUNTERS_FIELD_TYPE);
    mv.visitVarInsn(Opcodes.ALOAD, 0);
    mv.visitInsn(Opcodes.ARETURN);
    mv.visitMaxs(0, 0);//will be recalculated by writer
    mv.visitEnd();
}

From source file:net.sourceforge.cobertura.instrument.pass3.InjectCodeClassInstrumenter.java

License:GNU General Public License

/**
 * <p>If there was no 'static initialization block' in the class, the method is responsible for generating the method.<br/>
 * It is also responsible for generating method that keeps mapping of counterIds into source places connected to them</p>
 *//*  w w  w .  j  a  va 2 s .co  m*/
@Override
public void visitEnd() {
    if (!wasStaticInitMethodVisited) {
        //We need to generate new method
        MethodVisitor mv = super.visitMethod(Opcodes.ACC_STATIC, "<clinit>", "()V", null, null);
        mv.visitCode();
        codeProvider.generateCallCoberturaInitMethod(mv, classMap.getClassName());
        mv.visitInsn(Opcodes.RETURN);
        mv.visitMaxs(/*stack*/3, /*local*/0);
        mv.visitEnd();
        wasStaticInitMethodVisited = true;
    }

    codeProvider.generateCoberturaInitMethod(cv, classMap.getClassName(), classMap.getMaxCounterId() + 1);
    codeProvider.generateCoberturaClassMapMethod(cv, classMap);
    codeProvider.generateCoberturaGetAndResetCountersMethod(cv, classMap.getClassName());

    super.visitEnd();
}

From source file:net.sourceforge.cobertura.instrument.pass3.TestUnitCodeProvider.java

License:GNU General Public License

/**
 * Generates://from   w w w.  j  ava2s  .  co  m
 *   public static TestUnitInformationHolder[] __cobertura_get_and_reset_counters()
 *   {
 *     TestUnitInformationHolder[] local = __cobertura_counters;
 *     __cobertura_counters = new TestUnitInformationHolder[__cobertura_counters.length];
 *     return local;
 *   }
 */
public void generateCoberturaGetAndResetCountersMethod(ClassVisitor cv, String className) {
    MethodVisitor mv = cv.visitMethod(Opcodes.ACC_PUBLIC | Opcodes.ACC_STATIC,
            COBERTURA_GET_AND_RESET_COUNTERS_METHOD_NAME, "()" + COBERTURA_COUNTERS_FIELD_TYPE, null, null);
    mv.visitCode();
    /*cobertura_counters.*/
    mv.visitFieldInsn(Opcodes.GETSTATIC, className, COBERTURA_COUNTERS_FIELD_NAME,
            COBERTURA_COUNTERS_FIELD_TYPE);
    mv.visitVarInsn(Opcodes.ASTORE, 0);
    /*cobertura_counters.*/
    mv.visitFieldInsn(Opcodes.GETSTATIC, className, COBERTURA_COUNTERS_FIELD_NAME,
            COBERTURA_COUNTERS_FIELD_TYPE);
    mv.visitInsn(Opcodes.ARRAYLENGTH);

    mv.visitTypeInsn(Opcodes.ANEWARRAY, Type.getInternalName(TestUnitInformationHolder.class));
    mv.visitFieldInsn(Opcodes.PUTSTATIC, className, COBERTURA_COUNTERS_FIELD_NAME,
            COBERTURA_COUNTERS_FIELD_TYPE);
    mv.visitVarInsn(Opcodes.ALOAD, 0);
    mv.visitInsn(Opcodes.ARETURN);
    mv.visitMaxs(0, 0);//will be recalculated by writer
    mv.visitEnd();
}

From source file:net.wpm.reflectasm.ClassAccess.java

License:Open Source License

private static void insertConstructor(ClassWriter cw, String baseName) {
    MethodVisitor mv;
    mv = cw.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null);
    mv.visitCode();
    mv.visitVarInsn(ALOAD, 0);//from  w w w . j a  va2s . c  o  m
    mv.visitMethodInsn(INVOKESPECIAL, baseName, "<init>", "()V", false);
    mv.visitInsn(RETURN);
    mv.visitMaxs(0, 0);
    mv.visitEnd();
}

From source file:net.wpm.reflectasm.ClassAccess.java

License:Open Source License

private static void insertNewRawInstance(ClassWriter cw, String classNameInternal) {
    MethodVisitor mv;
    mv = cw.visitMethod(ACC_PUBLIC + ACC_VARARGS, "newInstance", "()Ljava/lang/Object;", null, null);
    mv.visitCode();
    mv.visitTypeInsn(NEW, classNameInternal);
    mv.visitInsn(DUP);// ww w  . j a v a  2s.  c  o  m
    mv.visitMethodInsn(INVOKESPECIAL, classNameInternal, "<init>", "()V", false);
    mv.visitInsn(ARETURN);
    mv.visitMaxs(0, 0);
    mv.visitEnd();
}