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

org.objectweb.asm.MethodVisitor.visitJumpInsn()
Visits a jump instruction. A jump instruction is an instruction that may jump to another instruction. @param opcode the opcode of the type instruction to be visited. Thisopcode is either IFEQ, IFNE, IFLT, IFGE, IFGT, IFLE, IF_ICMPEQ, IF_ICMPNE, IF_ICMPLT, IF_ICMPGE, IF_ICMPGT, IF_ICMPLE, IF_ACMPEQ, IF_ACMPNE, GOTO, JSR, IFNULL or IFNONNULL. @param label the operand of the instruction to be visited. This operandis a label that designates the instruction to which the jump instruction may jump.

        mv.visitLabel(l0);
        mv.visitLineNumber(63, l0);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, classDescriptor, fieldName, propClassSignature);
        Label l1 = new Label();
        mv.visitJumpInsn(IFNONNULL, l1);
        Label l2 = new Label();
        mv.visitLabel(l2);
        mv.visitLineNumber(64, l2);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitTypeInsn(NEW, collectionImplClass);

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        mv.visitVarInsn(ASTORE, varSvc); // Store the service object.


        Label notNull = new Label();
        Label isNull = new Label();
        mv.visitVarInsn(ALOAD, varSvc); // Load the service
        mv.visitJumpInsn(IFNONNULL, notNull); // If not null go to not null
        // Null branch - throw the exception
        mv.visitLabel(isNull);
        mv.visitTypeInsn(NEW, "java/lang/RuntimeException");
        mv.visitInsn(DUP);
        mv.visitLdcInsn("No service available");

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    Label l8 = new Label();
    mv.visitLabel(l8);
    mv.visitVarInsn(ILOAD, rowLocal);
    mv.visitVarInsn(ILOAD, numRowsLocal);
    Label l9 = new Label();
    mv.visitJumpInsn(IF_ICMPNE, l9);
    Label l10 = new Label();
    mv.visitLabel(l10);
    mv.visitInsn(ICONST_0);
    mv.visitVarInsn(ISTORE, rowLocal);

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    mv.visitVarInsn(ISTORE, rowLocal);


    // increment the vector index counter and loop
    mv.visitLabel(l9);
    mv.visitIincInsn(counterLocal, 1);
    mv.visitJumpInsn(GOTO, l4);


    mv.visitLabel(l5);


    int numColsLocal = method.reserveLocal(2);
    // calculate num cols (length / num rows)

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    Label l11 = new Label();
    mv.visitLabel(l11);
    mv.visitVarInsn(ILOAD, counterLocal);
    mv.visitVarInsn(ILOAD, numRowsLocal);
    Label l12 = new Label();
    mv.visitJumpInsn(IF_ICMPEQ, l12);




    Label l13 = new Label();
    mv.visitLabel(l13);
    mv.visitVarInsn(ALOAD, meansLocal);

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    mv.visitInsn(DASTORE);
    Label l14 = new Label();


    mv.visitLabel(l14);
    mv.visitIincInsn(counterLocal, 1);
    mv.visitJumpInsn(GOTO, l11);
    mv.visitLabel(l12);


    mv.visitVarInsn(ALOAD, meansLocal);
    mv.visitInsn(ARETURN);
  }

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    mv.visitLabel(l3);
    mv.visitVarInsn(ILOAD, counterLocal);
    mv.visitVarInsn(ILOAD, lengthLocal);


    Label l4 = new Label();
    mv.visitJumpInsn(IF_ICMPEQ, l4);


    Label l5 = new Label();
    mv.visitLabel(l5);


    // load the sum on to the stack, and the next value

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    mv.visitVarInsn(DSTORE, sumLocal);


    Label l6 = new Label();
    mv.visitLabel(l6);
    mv.visitIincInsn(counterLocal, 1);
    mv.visitJumpInsn(GOTO, l3);
    mv.visitLabel(l4);


    // return result
    mv.visitInsn(ICONST_1);
    mv.visitIntInsn(NEWARRAY, T_DOUBLE);

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    mv.visitLabel(l4);
    mv.visitVarInsn(ILOAD, counterLocal);
    matrix.pushLength(method);


    Label l5 = new Label();
    mv.visitJumpInsn(IF_ICMPEQ, l5);


    Label l6 = new Label();
    mv.visitLabel(l6);
    mv.visitVarInsn(ALOAD, meansLocal);
    mv.visitVarInsn(ILOAD, rowLocal);

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        l1 = new Label();
        mv.visitLabel(l1);
        mv.visitLineNumber(39, l1);
        mv.visitVarInsn(Opcodes.ALOAD, 4);
        l2 = new Label();
        mv.visitJumpInsn(Opcodes.IFNULL, l2);
        l3 = new Label();
        mv.visitLabel(l3);
        mv.visitLineNumber(40, l3);
        mv.visitVarInsn(Opcodes.ALOAD, 4);
        mv.visitInsn(Opcodes.ARETURN);

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