Examples of org.ow2.asm.MethodVisitor.visitJumpInsn()

org.ow2.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.visitVarInsn( ALOAD, 2 );
                    mv.visitMethodInsn( INVOKEVIRTUAL, proxyType, BuildUtils.getterName( field.getName(), field.getTypeName() ), 
                                        "()" + BuildUtils.getTypeDescriptor( field.getTypeName() ) );
                    mv.visitInsn( LCMP );
                    Label l8 = new Label();
                    mv.visitJumpInsn( IFEQ, l8 );
                    mv.visitInsn( ICONST_0 );
                    mv.visitInsn( IRETURN );
                    mv.visitLabel( l8 );


                    x = Math.max( x, 4 );

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        mv.visitTryCatchBlock(l2, l3, l2, null);
        mv.visitLabel(l0);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitVarInsn(ALOAD, 1);
        mv.visitMethodInsn(INVOKEVIRTUAL, "pkg/JSR1", "forwardJSR", "([I)V");
        mv.visitJumpInsn(JSR, l4); // forward JSR, will give forward JSR_W


        // many NOPs will be introduced here by the method resizing test


        mv.visitLabel(l1);
        mv.visitJumpInsn(GOTO, l5);

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        mv.visitJumpInsn(JSR, l4); // forward JSR, will give forward JSR_W


        // many NOPs will be introduced here by the method resizing test


        mv.visitLabel(l1);
        mv.visitJumpInsn(GOTO, l5);
        mv.visitLabel(l2);
        mv.visitVarInsn(ASTORE, 2);
        mv.visitJumpInsn(JSR, l4);
        mv.visitLabel(l3);
        mv.visitVarInsn(ALOAD, 2);

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        mv.visitLabel(l1);
        mv.visitJumpInsn(GOTO, l5);
        mv.visitLabel(l2);
        mv.visitVarInsn(ASTORE, 2);
        mv.visitJumpInsn(JSR, l4);
        mv.visitLabel(l3);
        mv.visitVarInsn(ALOAD, 2);
        mv.visitInsn(ATHROW);
        mv.visitLabel(l4);
        mv.visitVarInsn(ASTORE, 3);

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        mv.visitVarInsn(ILOAD, 1);
        mv.visitTableSwitchInsn(0, 2, l3/*default*/, l1, l2, l3 );
        mv.visitLabel(l1);
        mv.visitInsn(ICONST_1);
        mv.visitVarInsn(ISTORE, 7);
        mv.visitJumpInsn(GOTO, l3);
        mv.visitLabel(l2);
        mv.visitInsn(ICONST_2);
        mv.visitVarInsn(ISTORE, 7);
        mv.visitJumpInsn(GOTO, l3);
        mv.visitLabel(l3);

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        mv.visitVarInsn(ISTORE, 7);
        mv.visitJumpInsn(GOTO, l3);
        mv.visitLabel(l2);
        mv.visitInsn(ICONST_2);
        mv.visitVarInsn(ISTORE, 7);
        mv.visitJumpInsn(GOTO, l3);
        mv.visitLabel(l3);
        mv.visitVarInsn(ILOAD, 7);
        // lookupswitch
        Label l4 = new Label();
        Label l5 = new Label();

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            l5,
            l6 });
        mv.visitLabel(l4);
        mv.visitInsn(ICONST_1);
        mv.visitVarInsn(ISTORE, 7);
        mv.visitJumpInsn(GOTO, l6);
        mv.visitLabel(l5);
        mv.visitInsn(ICONST_2);
        mv.visitVarInsn(ISTORE, 7);
        mv.visitJumpInsn(GOTO, l6);
        mv.visitLabel(l6);

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        mv.visitVarInsn(ISTORE, 7);
        mv.visitJumpInsn(GOTO, l6);
        mv.visitLabel(l5);
        mv.visitInsn(ICONST_2);
        mv.visitVarInsn(ISTORE, 7);
        mv.visitJumpInsn(GOTO, l6);
        mv.visitLabel(l6);
        mv.visitVarInsn(ILOAD, 7);
        // throw
        mv.visitInsn(ACONST_NULL);
        mv.visitInsn(ATHROW);

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        mv = cw.visitMethod(ACC_PUBLIC, "wideLocals", "(I)I", null, null);
        mv.visitCode();
        Label l0 = new Label();
        Label l1 = new Label();
        mv.visitJumpInsn(GOTO, l1); // will give GOTO_W


        mv.visitLabel(l0);
        mv.visitIincInsn(300, 1); // covers 'update maxlocals' in MethodWriter
        mv.visitVarInsn(ILOAD, 300); // will give wide form
        mv.visitJumpInsn(IFEQ, l1); // will give long forward jump

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        mv.visitJumpInsn(GOTO, l1); // will give GOTO_W


        mv.visitLabel(l0);
        mv.visitIincInsn(300, 1); // covers 'update maxlocals' in MethodWriter
        mv.visitVarInsn(ILOAD, 300); // will give wide form
        mv.visitJumpInsn(IFEQ, l1); // will give long forward jump


        // many NOPs will be introduced here by the method resizing test


        mv.visitVarInsn(ILOAD, 300); // will give wide form
        mv.visitInsn(IRETURN);

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