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

org.objectweb.asm.MethodVisitor.visitVarInsn()
Visits a local variable instruction. A local variable instruction is an instruction that loads or stores the value of a local variable. @param opcode the opcode of the local variable instruction to be visited.This opcode is either ILOAD, LLOAD, FLOAD, DLOAD, ALOAD, ISTORE, LSTORE, FSTORE, DSTORE, ASTORE or RET. @param var the operand of the instruction to be visited. This operand isthe index of a local variable.

    Label[] labels = new Label[n_cells];
    for (int i = 0; i < n_cells; i++) {
      labels[i] = new Label();
    }


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


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


      mv.visitLabel(labels[zbase]);

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    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,
          ETERM_TYPE.getDescriptor());
      mv.visitInsn(Opcodes.ARETURN);

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      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());
    mv.visitInsn(Opcodes.ARETURN); // make compiler happy

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    }


    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());
    mv.visitInsn(Opcodes.ARETURN); // make compiler happy


    mv.visitMaxs(3, 2);

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    Label[] labels = new Label[n_cells];
    for (int i = 0; i < n_cells; i++) {
      labels[i] = new Label();
    }


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


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


      mv.visitLabel(labels[zbase]);

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    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);


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

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    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);


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

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      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());
    mv.visitInsn(Opcodes.POP);
    mv.visitInsn(Opcodes.RETURN); // make compiler happy

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    }


    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());
    mv.visitInsn(Opcodes.POP);
    mv.visitInsn(Opcodes.RETURN); // make compiler happy

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    MethodVisitor mv = cw.visitMethod(Opcodes.ACC_PUBLIC
        | Opcodes.ACC_STATIC, "cast", "(L" + ETUPLE_NAME + ";)L"
        + ETUPLE_NAME + n + ";", null, null);
    mv.visitCode();


    mv.visitVarInsn(Opcodes.ALOAD, 0);
    mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, ETUPLE_NAME, "arity", "()I");


    if (n <= 5) {
      mv.visitInsn(Opcodes.ICONST_0 + n);
    } else {

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