Example usage for org.objectweb.asm MethodVisitor visitLdcInsn

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

  1. HOME
  2. Java
  3. org.objectweb.asm
  4. org.objectweb.asm.*
  5. MethodVisitor
  6. visitLdcInsn

Introduction

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

Prototype

public void visitLdcInsn(final Object value)

Source Link

Document

Visits a LDC instruction.

Usage

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();/*from  w  ww .  j  av  a  2s . c o m*/
    mv.visitVarInsn(Opcodes.ALOAD, 0);
    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.AtomicArrayCodeProvider.java

License:GNU General Public License

public void generateCINITmethod(MethodVisitor mv, String className, int counters_cnt) {
    mv.visitFieldInsn(Opcodes.GETSTATIC, className, COBERTURA_COUNTERS_FIELD_NAME,
            COBERTURA_COUNTERS_FIELD_TYPE);
    Label l1 = new Label();
    mv.visitJumpInsn(Opcodes.IFNONNULL, l1);

    mv.visitTypeInsn(Opcodes.NEW, Type.getInternalName(AtomicIntegerArray.class));
    mv.visitInsn(Opcodes.DUP);//  w ww  .j  a va  2 s.  c om
    mv.visitLdcInsn(counters_cnt);
    mv.visitMethodInsn(Opcodes.INVOKESPECIAL, Type.getInternalName(AtomicIntegerArray.class), "<init>", "(I)V");
    mv.visitFieldInsn(Opcodes.PUTSTATIC, className, COBERTURA_COUNTERS_FIELD_NAME,
            COBERTURA_COUNTERS_FIELD_TYPE);
    generateRegisterClass(mv, className);
    mv.visitLabel(l1);
}

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

License:GNU General Public License

public void generateCodeThatIncrementsCoberturaCounter(MethodVisitor nextMethodVisitor, Integer counterId,
        String className) {//from   www  .jav  a2  s . c  om
    /*cobertura_counters.incrementAndGet(i);*/
    /*cobertura_counters.*/
    nextMethodVisitor.visitFieldInsn(Opcodes.GETSTATIC, className, COBERTURA_COUNTERS_FIELD_NAME,
            COBERTURA_COUNTERS_FIELD_TYPE);
    /*index:*/
    nextMethodVisitor.visitLdcInsn((int) counterId);
    nextMethodVisitor.visitMethodInsn(Opcodes.INVOKEVIRTUAL, Type.getInternalName(AtomicIntegerArray.class),
            "incrementAndGet", "(I)I");
    nextMethodVisitor.visitInsn(Opcodes.POP);
}

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

License:GNU General Public License

public void generateCodeThatIncrementsCoberturaCounterFromInternalVariable(MethodVisitor nextMethodVisitor,
        int lastJumpIdVariableIndex, String className) {
    /*cobertura_counters[value('lastJumpIdVariableIndex')]++;*/
    /*cobertura_counters.*/
    nextMethodVisitor.visitFieldInsn(Opcodes.GETSTATIC, className, COBERTURA_COUNTERS_FIELD_NAME,
            COBERTURA_COUNTERS_FIELD_TYPE);
    /*index:*///ww w  .  j a va  2 s .  c  o  m
    nextMethodVisitor.visitVarInsn(Opcodes.ILOAD, lastJumpIdVariableIndex);
    nextMethodVisitor.visitInsn(Opcodes.DUP2);
    nextMethodVisitor.visitInsn(Opcodes.IALOAD);
    nextMethodVisitor.visitLdcInsn(1);
    nextMethodVisitor.visitInsn(Opcodes.IADD);
    nextMethodVisitor.visitInsn(Opcodes.IASTORE);
}

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

License:GNU General Public License

public void generateCodeThatIncrementsCoberturaCounter(MethodVisitor nextMethodVisitor, Integer counterId,
        String className) {//from   w  ww. j a va2 s  .c  om
    /*cobertura_counters[value('lastJumpIdVariableIndex')]++;*/
    /*cobertura_counters.*/
    nextMethodVisitor.visitFieldInsn(Opcodes.GETSTATIC, className, COBERTURA_COUNTERS_FIELD_NAME,
            COBERTURA_COUNTERS_FIELD_TYPE);
    /*index:*/
    nextMethodVisitor.visitLdcInsn((int) counterId);
    nextMethodVisitor.visitInsn(Opcodes.DUP2);
    nextMethodVisitor.visitInsn(Opcodes.IALOAD);
    nextMethodVisitor.visitLdcInsn(1);
    nextMethodVisitor.visitInsn(Opcodes.IADD);
    nextMethodVisitor.visitInsn(Opcodes.IASTORE);
}

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

License:GNU General Public License

public void generateCINITmethod(MethodVisitor mv, String className, int counters_cnt) {
    mv.visitFieldInsn(Opcodes.GETSTATIC, className, COBERTURA_COUNTERS_FIELD_NAME,
            COBERTURA_COUNTERS_FIELD_TYPE);
    Label l1 = new Label();
    mv.visitJumpInsn(Opcodes.IFNONNULL, l1);
    mv.visitLdcInsn(counters_cnt);
    mv.visitIntInsn(Opcodes.NEWARRAY, Opcodes.T_INT);
    mv.visitFieldInsn(Opcodes.PUTSTATIC, className, COBERTURA_COUNTERS_FIELD_NAME,
            COBERTURA_COUNTERS_FIELD_TYPE);
    generateRegisterClass(mv, className);
    mv.visitLabel(l1);/* w  w  w  . ja va  2 s  .c om*/
}

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

License:GNU General Public License

/**
 * Generates:/* www. jav a 2 s .  co m*/
 * 
 */
public void generateCodeThatIncrementsCoberturaCounter(MethodVisitor nextMethodVisitor, Integer counterId,
        String className) {

    nextMethodVisitor.visitVarInsn(ALOAD, 0);
    nextMethodVisitor.visitFieldInsn(GETSTATIC, className, COBERTURA_COUNTERS_FIELD_NAME,
            COBERTURA_COUNTERS_FIELD_TYPE);
    nextMethodVisitor.visitLdcInsn((int) counterId);
    nextMethodVisitor.visitInsn(AALOAD);
    nextMethodVisitor.visitFieldInsn(GETSTATIC, "net/sourceforge/cobertura/Cobertura",
            "TestClassAndMethodNamesMerged", "Ljava/lang/String;");
    nextMethodVisitor.visitMethodInsn(INVOKEVIRTUAL,
            "net/sourceforge/cobertura/coveragedata/TestUnitInformationHolder", "appendTestUnit",
            "(Ljava/lang/String;)V");
}

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

License:GNU General Public License

/**
 * Generates:/*  w  ww  .  j av a2s. com*/
 *   public static void __cobertura_init()
 *   {
 *     if (__cobertura_counters == null)
 *       {
 *         __cobertura_counters = new TestUnitInformationHolder[class.length];
 *       }
 *       TouchCollector.registerClass("mypackage/HelloWorld");
 *   }
 */
public void generateCINITmethod(MethodVisitor mv, String className, int counters_cnt) {
    mv.visitFieldInsn(Opcodes.GETSTATIC, className, COBERTURA_COUNTERS_FIELD_NAME,
            COBERTURA_COUNTERS_FIELD_TYPE);
    Label l1 = new Label();
    mv.visitJumpInsn(Opcodes.IFNONNULL, l1);
    mv.visitLdcInsn(counters_cnt);
    mv.visitTypeInsn(Opcodes.ANEWARRAY, Type.getInternalName(TestUnitInformationHolder.class));
    mv.visitFieldInsn(Opcodes.PUTSTATIC, className, COBERTURA_COUNTERS_FIELD_NAME,
            COBERTURA_COUNTERS_FIELD_TYPE);

    mv.visitInsn(ICONST_0);
    mv.visitVarInsn(ISTORE, 1);
    Label l11 = new Label();
    mv.visitLabel(l11);
    Label l2 = new Label();
    mv.visitJumpInsn(GOTO, l2);
    Label l3 = new Label();
    mv.visitLabel(l3);
    mv.visitLineNumber(24, l3);
    mv.visitFrame(Opcodes.F_APPEND, 1, new Object[] { Opcodes.INTEGER }, 0, null);
    mv.visitFieldInsn(GETSTATIC, className, COBERTURA_COUNTERS_FIELD_NAME, COBERTURA_COUNTERS_FIELD_TYPE);
    mv.visitVarInsn(ILOAD, 1);
    mv.visitTypeInsn(NEW, "net/sourceforge/cobertura/coveragedata/TestUnitInformationHolder");
    mv.visitInsn(DUP);
    mv.visitMethodInsn(INVOKESPECIAL, "net/sourceforge/cobertura/coveragedata/TestUnitInformationHolder",
            "<init>", "()V");
    mv.visitInsn(AASTORE);
    Label l4 = new Label();
    mv.visitLabel(l4);
    mv.visitLineNumber(23, l4);
    mv.visitIincInsn(1, 1);
    mv.visitLabel(l2);
    mv.visitFrame(Opcodes.F_SAME, 0, null, 0, null);
    mv.visitVarInsn(ILOAD, 1);
    mv.visitFieldInsn(GETSTATIC, className, COBERTURA_COUNTERS_FIELD_NAME, COBERTURA_COUNTERS_FIELD_TYPE);
    mv.visitInsn(ARRAYLENGTH);
    mv.visitJumpInsn(IF_ICMPLT, l3);

    mv.visitLabel(l1);

    generateRegisterClass(mv, className);
}

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

License:Open Source License

private static void insertNewInstance(ClassWriter cw, String classNameInternal, ClassInfo info) {
    MethodVisitor mv;
    mv = cw.visitMethod(ACC_PUBLIC + ACC_VARARGS, "newInstance", "(I[Ljava/lang/Object;)Ljava/lang/Object;",
            null, null);/*w ww  .  j a  v a  2s . c o m*/
    mv.visitCode();

    int n = info.constructorModifiers.length;

    if (n != 0) {
        mv.visitVarInsn(ILOAD, 1);
        Label[] labels = new Label[n];
        for (int i = 0; i < n; i++)
            labels[i] = new Label();
        Label defaultLabel = new Label();
        mv.visitTableSwitchInsn(0, labels.length - 1, defaultLabel, labels);

        StringBuilder buffer = new StringBuilder(128);
        for (int i = 0; i < n; i++) {
            mv.visitLabel(labels[i]);
            if (i == 0)
                mv.visitFrame(Opcodes.F_APPEND, 1, new Object[] { classNameInternal }, 0, null);
            else
                mv.visitFrame(Opcodes.F_SAME, 0, null, 0, null);

            mv.visitTypeInsn(NEW, classNameInternal);
            mv.visitInsn(DUP);

            buffer.setLength(0);
            buffer.append('(');

            Class<?>[] paramTypes = info.constructorParameterTypes[i];
            for (int paramIndex = 0; paramIndex < paramTypes.length; paramIndex++) {
                mv.visitVarInsn(ALOAD, 2);
                mv.visitIntInsn(BIPUSH, paramIndex);
                mv.visitInsn(AALOAD);
                Type paramType = Type.getType(paramTypes[paramIndex]);
                unbox(mv, paramType);
                buffer.append(paramType.getDescriptor());
            }
            buffer.append(")V");
            mv.visitMethodInsn(INVOKESPECIAL, classNameInternal, "<init>", buffer.toString(), false);
            mv.visitInsn(ARETURN);
        }
        mv.visitLabel(defaultLabel);
        mv.visitFrame(Opcodes.F_SAME, 0, null, 0, null);
    }
    mv.visitTypeInsn(NEW, "java/lang/IllegalArgumentException");
    mv.visitInsn(DUP);
    mv.visitTypeInsn(NEW, "java/lang/StringBuilder");
    mv.visitInsn(DUP);
    mv.visitLdcInsn("Constructor not found: ");
    mv.visitMethodInsn(INVOKESPECIAL, "java/lang/StringBuilder", "<init>", "(Ljava/lang/String;)V", false);
    mv.visitVarInsn(ILOAD, 1);
    mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "append", "(I)Ljava/lang/StringBuilder;",
            false);
    mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "toString", "()Ljava/lang/String;", false);
    mv.visitMethodInsn(INVOKESPECIAL, "java/lang/IllegalArgumentException", "<init>", "(Ljava/lang/String;)V",
            false);
    mv.visitInsn(ATHROW);
    mv.visitMaxs(0, 0);
    mv.visitEnd();
}

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

License:Open Source License

private static void insertInvoke(ClassWriter cw, String classNameInternal, List<Method> methods) {
    MethodVisitor mv;
    mv = cw.visitMethod(ACC_PUBLIC + ACC_VARARGS, "invoke",
            "(Ljava/lang/Object;I[Ljava/lang/Object;)Ljava/lang/Object;", null, null);
    mv.visitCode();//from ww  w  .ja  v  a2  s.  c  om

    int n = methods.size();

    if (n != 0) {
        mv.visitVarInsn(ILOAD, 2);
        Label[] labels = new Label[n];
        for (int i = 0; i < n; i++)
            labels[i] = new Label();
        Label defaultLabel = new Label();
        mv.visitTableSwitchInsn(0, labels.length - 1, defaultLabel, labels);

        StringBuilder buffer = new StringBuilder(128);
        for (int i = 0; i < n; i++) {
            Method method = methods.get(i);
            boolean isInterface = method.getDeclaringClass().isInterface();
            boolean isStatic = isStatic(method.getModifiers());

            mv.visitLabel(labels[i]);
            if (i == 0)
                mv.visitFrame(Opcodes.F_APPEND, 1, new Object[] { classNameInternal }, 0, null);
            else
                mv.visitFrame(Opcodes.F_SAME, 0, null, 0, null);

            if (!isStatic) {
                mv.visitVarInsn(ALOAD, 1);
                mv.visitTypeInsn(CHECKCAST, classNameInternal);
            }

            buffer.setLength(0);
            buffer.append('(');

            String methodName = method.getName();
            Class<?>[] paramTypes = method.getParameterTypes();
            Class<?> returnType = method.getReturnType();
            for (int paramIndex = 0; paramIndex < paramTypes.length; paramIndex++) {
                mv.visitVarInsn(ALOAD, 3);
                mv.visitIntInsn(BIPUSH, paramIndex);
                mv.visitInsn(AALOAD);
                Type paramType = Type.getType(paramTypes[paramIndex]);
                unbox(mv, paramType);
                buffer.append(paramType.getDescriptor());
            }

            buffer.append(')');
            buffer.append(Type.getDescriptor(returnType));
            final int inv = isInterface ? INVOKEINTERFACE : (isStatic ? INVOKESTATIC : INVOKEVIRTUAL);
            mv.visitMethodInsn(inv, classNameInternal, methodName, buffer.toString(), isInterface);

            final Type retType = Type.getType(returnType);
            box(mv, retType);
            mv.visitInsn(ARETURN);
        }

        mv.visitLabel(defaultLabel);
        mv.visitFrame(Opcodes.F_SAME, 0, null, 0, null);
    }
    mv.visitTypeInsn(NEW, "java/lang/IllegalArgumentException");
    mv.visitInsn(DUP);
    mv.visitTypeInsn(NEW, "java/lang/StringBuilder");
    mv.visitInsn(DUP);
    mv.visitLdcInsn("Method not found: ");
    mv.visitMethodInsn(INVOKESPECIAL, "java/lang/StringBuilder", "<init>", "(Ljava/lang/String;)V", false);
    mv.visitVarInsn(ILOAD, 2);
    mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "append", "(I)Ljava/lang/StringBuilder;",
            false);
    mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "toString", "()Ljava/lang/String;", false);
    mv.visitMethodInsn(INVOKESPECIAL, "java/lang/IllegalArgumentException", "<init>", "(Ljava/lang/String;)V",
            false);
    mv.visitInsn(ATHROW);
    mv.visitMaxs(0, 0);
    mv.visitEnd();
}