Examples of org.objectweb.asm.MethodVisitor.visitLabel()

org.objectweb.asm.MethodVisitor.visitLabel()
Visits a label. A label designates the instruction that will be visited just after it. @param label a {@link Label Label} object.

    mv.visitVarInsn(Opcodes.ILOAD, 1);
    mv.visitTableSwitchInsn(1, n_cells, dflt, labels);


    for (int zbase = 0; zbase < n_cells; zbase++) {


      mv.visitLabel(labels[zbase]);


      mv.visitVarInsn(Opcodes.ALOAD, 0); // load this
      String field = "elem" + (zbase + 1);


      mv.visitFieldInsn(Opcodes.GETFIELD, this_class_name, field,

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      mv.visitFieldInsn(Opcodes.GETFIELD, this_class_name, field,
          ETERM_TYPE.getDescriptor());
      mv.visitInsn(Opcodes.ARETURN);
    }


    mv.visitLabel(dflt);


    mv.visitVarInsn(Opcodes.ALOAD, 0);
    mv.visitVarInsn(Opcodes.ILOAD, 1);
    mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, ETUPLE_NAME, "bad_nth", "(I)"
        + ETERM_TYPE.getDescriptor());

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    mv.visitVarInsn(Opcodes.ILOAD, 1);
    mv.visitTableSwitchInsn(1, n_cells, dflt, labels);


    for (int zbase = 0; zbase < n_cells; zbase++) {


      mv.visitLabel(labels[zbase]);


      mv.visitVarInsn(Opcodes.ALOAD, 0); // load this
      mv.visitVarInsn(Opcodes.ALOAD, 2); // load term


      String field = "elem" + (zbase + 1);

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      mv.visitFieldInsn(Opcodes.PUTFIELD, this_class_name, field,
          ETERM_TYPE.getDescriptor());
      mv.visitInsn(Opcodes.RETURN);
    }


    mv.visitLabel(dflt);


    mv.visitVarInsn(Opcodes.ALOAD, 0);
    mv.visitVarInsn(Opcodes.ILOAD, 1);
    mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, ETUPLE_NAME, "bad_nth", "(I)"
        + ETERM_TYPE.getDescriptor());

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    mv.visitJumpInsn(Opcodes.IF_ICMPNE, fail);
    mv.visitVarInsn(Opcodes.ALOAD, 0);
    mv.visitTypeInsn(Opcodes.CHECKCAST, ETUPLE_NAME + n);
    mv.visitInsn(Opcodes.ARETURN);


    mv.visitLabel(fail);
    mv.visitInsn(Opcodes.ACONST_NULL);
    mv.visitInsn(Opcodes.ARETURN);


    mv.visitMaxs(2, 2);
    mv.visitEnd();

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    mv.visitJumpInsn(Opcodes.IFEQ, fail);
    mv.visitVarInsn(Opcodes.ALOAD, 0);
    mv.visitTypeInsn(Opcodes.CHECKCAST, ETUPLE_NAME + n);
    mv.visitInsn(Opcodes.ARETURN);


    mv.visitLabel(fail);
    mv.visitInsn(Opcodes.ACONST_NULL);
    mv.visitInsn(Opcodes.ARETURN);


    mv.visitMaxs(2, 2);
    mv.visitEnd();

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        mv.visitJumpInsn(Opcodes.IFEQ, fail);
        mv.visitVarInsn(Opcodes.ALOAD, 0);
        mv.visitTypeInsn(Opcodes.CHECKCAST, EFUN_NAME+n);
        mv.visitInsn(Opcodes.ARETURN);


        mv.visitLabel(fail);
        mv.visitInsn(Opcodes.ACONST_NULL);
        mv.visitInsn(Opcodes.ARETURN);


        mv.visitMaxs(2, 2);
        mv.visitEnd();

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        // add constructor
        MethodVisitor mv = cw.visitMethod(Opcodes.ACC_PUBLIC, "<init>", "()V", null, null);
        mv.visitCode();
        Label lbegin = new Label();
        mv.visitLabel(lbegin);
        mv.visitVarInsn(Opcodes.ALOAD, 0);
        mv.visitMethodInsn(Opcodes.INVOKESPECIAL, "java/lang/Object", "<init>", "()V");
        mv.visitInsn(Opcodes.RETURN);
        Label lend = new Label();
        mv.visitLabel(lend);

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        mv.visitLabel(lbegin);
        mv.visitVarInsn(Opcodes.ALOAD, 0);
        mv.visitMethodInsn(Opcodes.INVOKESPECIAL, "java/lang/Object", "<init>", "()V");
        mv.visitInsn(Opcodes.RETURN);
        Label lend = new Label();
        mv.visitLabel(lend);
        mv.visitLocalVariable("this", "L" + classFileName + ";", null, lbegin, lend, 0);
        mv.visitMaxs(1, 1);
        mv.visitEnd();


        for (MessagePartInfo mpi : messageInfo.getMessageParts()) {

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                // Init
                mv.visitInsn(ICONST_0);
                mv.visitVarInsn(ISTORE, index);
                Label l1b = new Label();
                mv.visitLabel(l1b);
                Label l2b = new Label();
                mv.visitJumpInsn(GOTO, l2b);


                // Loop
                Label l3b = new Label();

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