Examples of org.objectweb.asm.CodeVisitor.visitInsn()

org.objectweb.asm.CodeVisitor.visitInsn()
Visits a zero operand instruction. @param opcode the opcode of the instruction to be visited. This opcode iseither NOP, ACONST_NULL, ICONST_M1, ICONST_0, ICONST_1, ICONST_2, ICONST_3, ICONST_4, ICONST_5, LCONST_0, LCONST_1, FCONST_0, FCONST_1, FCONST_2, DCONST_0, DCONST_1, IALOAD, LALOAD, FALOAD, DALOAD, AALOAD, BALOAD, CALOAD, SALOAD, IASTORE, LASTORE, FASTORE, DASTORE, AASTORE, BASTORE, CASTORE, SASTORE, POP, POP2, DUP, DUP_X1, DUP_X2, DUP2, DUP2_X1, DUP2_X2, SWAP, IADD, LADD, FADD, DADD, ISUB, LSUB, FSUB, DSUB, IMUL, LMUL, FMUL, DMUL, IDIV, LDIV, FDIV, DDIV, IREM, LREM, FREM, DREM, INEG, LNEG, FNEG, DNEG, ISHL, LSHL, ISHR, LSHR, IUSHR, LUSHR, IAND, LAND, IOR, LOR, IXOR, LXOR, I2L, I2F, I2D, L2I, L2F, L2D, F2I, F2L, F2D, D2I, D2L, D2F, I2B, I2C, I2S, LCMP, FCMPL, FCMPG, DCMPL, DCMPG, IRETURN, LRETURN, FRETURN, DRETURN, ARETURN, RETURN, ARRAYLENGTH, ATHROW, MONITORENTER, or MONITOREXIT.

                "(" + getJVMType(classToWrite) + ")" + ft.getDescriptor(), null, null);
        //return instance.${f.getter}();
        mv.visitVarInsn(ALOAD, 0);
        mv.visitMethodInsn(INVOKEVIRTUAL, classToWrite, 
                f.getGetter(), "()" +  ft.getDescriptor());
        mv.visitInsn(ft.getOpcode(IRETURN));
        mv.visitMaxs(0, 0);
    }
    private void generateStaticFieldSetter(Field f, Type ft) {
        //public final static void ${f.setter}(${baseClassName} instance, ${f.memoryType} val) {
        CodeVisitor mv;

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        //instance.${f.setter}(val);
        mv.visitVarInsn(ALOAD, 0); //Class instance
        mv.visitVarInsn(ft.getOpcode(ILOAD), 1); //field
        mv.visitMethodInsn(INVOKEVIRTUAL, classToWrite, f.getSetter(), 
                "(" + ft.getDescriptor() + ")V");
        mv.visitInsn(RETURN);
        mv.visitMaxs(0, 0);
    }
    private void generateFieldGetter(Field f, Type ft, String ftd, int nbField) {
        CodeVisitor mv;
        mv = cv.visitMethod(ACC_PUBLIC, f.getGetter(), "()" + ftd, null, null);

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            mv.visitJumpInsn(IFNULL, l1);
            // && (speedoReferenceState.getDetachedStatus() != DetachedLifeCycle.DETACHED_NONE)
            generateGetRefState(mv, false);
            mv.visitMethodInsn(INVOKEVIRTUAL, xfieldsAncestorJCN, "getDetachedStatus", "()B");
            Util.visitIntConstant(mv, DetachedLifeCycle.DETACHED_NONE);
            mv.visitInsn(I2B);
            mv.visitJumpInsn(IF_ICMPEQ, l1);
            // && !(($classNameFields) speedoReferenceState).${f.name}Loaded
            generateGetRefState(mv, true);
            mv.visitFieldInsn(GETFIELD, xfieldsJCN, f.getName() + "Loaded", "Z");
            mv.visitJumpInsn(IFNE, l1);

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            generateGetRefState(mv, true);
            mv.visitFieldInsn(GETFIELD, xfieldsJCN, f.getName() + "Loaded", "Z");
            mv.visitJumpInsn(IFNE, l1);
            {
                mv.visitTypeInsn(NEW, personality.getDetachedFieldAccessExceptionClassNameSlash());
                mv.visitInsn(DUP);
                mv.visitLdcInsn("Field " + f.getName() + " cannot be accessed: not loaded when the object has been detached");
                mv.visitMethodInsn(INVOKESPECIAL, personality.getDetachedFieldAccessExceptionClassNameSlash(), "<init>", "(Ljava/lang/String;)V");
                mv.visitInsn(ATHROW);
            }
            mv.visitLabel(l1);

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            {
                mv.visitTypeInsn(NEW, personality.getDetachedFieldAccessExceptionClassNameSlash());
                mv.visitInsn(DUP);
                mv.visitLdcInsn("Field " + f.getName() + " cannot be accessed: not loaded when the object has been detached");
                mv.visitMethodInsn(INVOKESPECIAL, personality.getDetachedFieldAccessExceptionClassNameSlash(), "<init>", "(Ljava/lang/String;)V");
                mv.visitInsn(ATHROW);
            }
            mv.visitLabel(l1);
        }
        
        //StateItf sa = this.speedoReadIntention(new long[] { ... });

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        mv.visitVarInsn(ASTORE, 1);


        //return sa.f1;
        mv.visitVarInsn(ALOAD, 1);
        mv.visitFieldInsn(GETFIELD, xfieldsJCN, f.getName(), ftd);
        mv.visitInsn(ft.getOpcode(IRETURN));
        mv.visitMaxs(0, 0);
    }


    private void generateFieldSetter(Field f, Type ft, String ftd, int nbField) {
        CodeVisitor mv;

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        {
            //if(speedoReferenceState.getDetachedStatus() != DetachedLifeCycle.DETACHED_NONE) {
            generateGetRefState(mv, false);
            mv.visitMethodInsn(INVOKEVIRTUAL, xfieldsAncestorJCN, "getDetachedStatus", "()B");
            Util.visitIntConstant(mv, DetachedLifeCycle.DETACHED_NONE);
            mv.visitInsn(I2B);
            Label l3 = new Label();
            mv.visitJumpInsn(IF_ICMPEQ, l3);
            {
                //if (!(($classNameFields) speedoReferenceState).${f.name}Loaded ) {
                generateGetRefState(mv, true);

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                Label l5 = new Label();
                mv.visitJumpInsn(IFNE, l5);
                {
                    //throw new DetachedFieldAccessException("Field $f.name cannot be accessed: not loaded when the object has been detached");
                    mv.visitTypeInsn(NEW, personality.getDetachedFieldAccessExceptionClassNameSlash());
                    mv.visitInsn(DUP);
                    mv.visitLdcInsn("Field " + f.getName() 
                            + " cannot be accessed: not loaded when the object has been detached");
                    mv.visitMethodInsn(INVOKESPECIAL, personality.getDetachedFieldAccessExceptionClassNameSlash(), "<init>", "(Ljava/lang/String;)V");
                    mv.visitInsn(ATHROW);
                }

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                    mv.visitTypeInsn(NEW, personality.getDetachedFieldAccessExceptionClassNameSlash());
                    mv.visitInsn(DUP);
                    mv.visitLdcInsn("Field " + f.getName() 
                            + " cannot be accessed: not loaded when the object has been detached");
                    mv.visitMethodInsn(INVOKESPECIAL, personality.getDetachedFieldAccessExceptionClassNameSlash(), "<init>", "(Ljava/lang/String;)V");
                    mv.visitInsn(ATHROW);
                }
                mv.visitLabel(l5);
                //mark the detached copy as dirty
                //speedoReferenceState.setDetachedStatus(DetachedLifeCycle.DETACHED_DIRTY);
                generateGetRefState(mv, false);

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                mv.visitLabel(l5);
                //mark the detached copy as dirty
                //speedoReferenceState.setDetachedStatus(DetachedLifeCycle.DETACHED_DIRTY);
                generateGetRefState(mv, false);
                Util.visitIntConstant(mv, DetachedLifeCycle.DETACHED_DIRTY);
                mv.visitInsn(I2B);
                mv.visitMethodInsn(INVOKEVIRTUAL, xfieldsAncestorJCN, "setDetachedStatus", "(B)V");
            }
            mv.visitLabel(l3);
            //(($classNameFields) speedoReferenceState).${f.name} = val;
            generateGetRefState(mv, true);

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