Examples of org.drools.asm.MethodVisitor.visitInsn()

org.drools.asm.MethodVisitor.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.

                        mv.visitInsn( Opcodes.DUP2 );
                        mv.visitIntInsn( Opcodes.BIPUSH,
                                         32 );
                        mv.visitInsn( Opcodes.LUSHR );
                        mv.visitInsn( Opcodes.LXOR );
                        mv.visitInsn( Opcodes.L2I );
                    } else if ( !isPrimitive( field.getTypeName() ) ) {
                        // attr_hash ::== ((objAttr == null) ? 0 : objAttr.hashCode());
                        Label olabel1 = new Label();
                        mv.visitJumpInsn( Opcodes.IFNONNULL,
                                          olabel1 );

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                    } else if ( !isPrimitive( field.getTypeName() ) ) {
                        // attr_hash ::== ((objAttr == null) ? 0 : objAttr.hashCode());
                        Label olabel1 = new Label();
                        mv.visitJumpInsn( Opcodes.IFNONNULL,
                                          olabel1 );
                        mv.visitInsn( Opcodes.ICONST_0 );
                        Label olabel2 = new Label();
                        mv.visitJumpInsn( Opcodes.GOTO,
                                          olabel2 );
                        mv.visitLabel( olabel1 );
                        mv.visitVarInsn( Opcodes.ALOAD,

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                                            "hashCode",
                                            "()I" );
                        mv.visitLabel( olabel2 );
                    }


                    mv.visitInsn( Opcodes.IADD );
                    mv.visitVarInsn( Opcodes.ISTORE,
                                     1 );
                }
            }
            mv.visitVarInsn( Opcodes.ILOAD,

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                                     1 );
                }
            }
            mv.visitVarInsn( Opcodes.ILOAD,
                             1 );
            mv.visitInsn( Opcodes.IRETURN );


            Label lastLabel = null;
            if ( this.debug ) {
                lastLabel = new Label();
                mv.visitLabel( lastLabel );

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            }


            // StringBuffer buf = new StringBuffer();
            mv.visitTypeInsn( Opcodes.NEW,
                              Type.getInternalName( StringBuffer.class ) );
            mv.visitInsn( Opcodes.DUP );
            mv.visitMethodInsn( Opcodes.INVOKESPECIAL,
                                Type.getInternalName( StringBuffer.class ),
                                "<init>",
                                "()V" );
            mv.visitVarInsn( Opcodes.ASTORE,

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                                "(Ljava/lang/String;)Ljava/lang/StringBuffer;" );
            mv.visitMethodInsn( Opcodes.INVOKEVIRTUAL,
                                Type.getInternalName( StringBuffer.class ),
                                "toString",
                                "()Ljava/lang/String;" );
            mv.visitInsn( Opcodes.ARETURN );


            Label lastLabel = null;
            if ( this.debug ) {
                lastLabel = new Label();
                mv.visitLabel( lastLabel );

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                         0 );
        mv.visitFieldInsn( Opcodes.GETFIELD,
                           className,
                           fieldName,
                           Type.getDescriptor( fieldType ) );
        mv.visitInsn( Type.getType( fieldType ).getOpcode( Opcodes.IRETURN ) );


        // local variables table
        final Label l4 = new Label();
        mv.visitLabel( l4 );
        mv.visitLocalVariable( "this",

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                         0 );
        mv.visitFieldInsn( Opcodes.GETFIELD,
                           className,
                           fieldName,
                           Type.getDescriptor( fieldType ) );
        mv.visitInsn( Type.getType( fieldType ).getOpcode( Opcodes.IRETURN ) );


        // local variables table
        final Label l4 = new Label();
        mv.visitLabel( l4 );
        mv.visitLocalVariable( "this",

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            mv.visitLabel( l1 );
            mv.visitVarInsn( Opcodes.ALOAD,
                             0 );
            if ( fieldType.isPrimitive() ) {
                if ( fieldType.equals( Long.TYPE ) ) {
                    mv.visitInsn( Opcodes.LCONST_0 );
                } else if ( fieldType.equals( Double.TYPE ) ) {
                    mv.visitInsn( Opcodes.DCONST_0 );
                } else if ( fieldType.equals( Float.TYPE ) ) {
                    mv.visitInsn( Opcodes.FCONST_0 );
                } else {

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                             0 );
            if ( fieldType.isPrimitive() ) {
                if ( fieldType.equals( Long.TYPE ) ) {
                    mv.visitInsn( Opcodes.LCONST_0 );
                } else if ( fieldType.equals( Double.TYPE ) ) {
                    mv.visitInsn( Opcodes.DCONST_0 );
                } else if ( fieldType.equals( Float.TYPE ) ) {
                    mv.visitInsn( Opcodes.FCONST_0 );
                } else {
                    mv.visitInsn( Opcodes.ICONST_0 );
                }

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