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

org.drools.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.

                                           field.getName(),
                                           getTypeDescriptor( field.getTypeName() ) );
                        mv.visitJumpInsn( Opcodes.IFNULL,
                                          goNext );


                        mv.visitVarInsn( Opcodes.ALOAD,
                                         0 );
                        mv.visitFieldInsn( Opcodes.GETFIELD,
                                           getInternalType( classDef.getClassName() ),
                                           field.getName(),
                                           getTypeDescriptor( field.getTypeName() ) );

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                                         0 );
                        mv.visitFieldInsn( Opcodes.GETFIELD,
                                           getInternalType( classDef.getClassName() ),
                                           field.getName(),
                                           getTypeDescriptor( field.getTypeName() ) );
                        mv.visitVarInsn( Opcodes.ALOAD,
                                         2 );
                        mv.visitFieldInsn( Opcodes.GETFIELD,
                                           getInternalType( classDef.getClassName() ),
                                           field.getName(),
                                           getTypeDescriptor( field.getTypeName() ) );

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        mv.visitCode();


        final Label l0 = new Label();
        mv.visitLabel( l0 );
        mv.visitVarInsn( Opcodes.ALOAD,
                         2 );
        mv.visitTypeInsn( Opcodes.CHECKCAST,
                          Type.getInternalName( originalClass ) );


        if ( originalClass.isInterface() ) {

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                mv.visitLabel( l0 );
            }


            // int result = 1;
            mv.visitInsn( Opcodes.ICONST_1 );
            mv.visitVarInsn( Opcodes.ISTORE,
                             1 );


            // for each key field
            for ( FieldDefinition field : classDef.getFieldsDefinitions() ) {
                if ( field.isKey() ) {

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            // for each key field
            for ( FieldDefinition field : classDef.getFieldsDefinitions() ) {
                if ( field.isKey() ) {


                    // result = result * 31 + <attr_hash>
                    mv.visitVarInsn( Opcodes.ILOAD,
                                     1 );
                    mv.visitIntInsn( Opcodes.BIPUSH,
                                     31 );
                    mv.visitVarInsn( Opcodes.ILOAD,
                                     1 );

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                    // result = result * 31 + <attr_hash>
                    mv.visitVarInsn( Opcodes.ILOAD,
                                     1 );
                    mv.visitIntInsn( Opcodes.BIPUSH,
                                     31 );
                    mv.visitVarInsn( Opcodes.ILOAD,
                                     1 );
                    mv.visitInsn( Opcodes.IMUL );


                    mv.visitVarInsn( Opcodes.ALOAD,
                                     0 );

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                                     31 );
                    mv.visitVarInsn( Opcodes.ILOAD,
                                     1 );
                    mv.visitInsn( Opcodes.IMUL );


                    mv.visitVarInsn( Opcodes.ALOAD,
                                     0 );
                    mv.visitFieldInsn( Opcodes.GETFIELD,
                                       getInternalType( classDef.getClassName() ),
                                       field.getName(),
                                       getTypeDescriptor( field.getTypeName() ) );

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            mv.visitCode();
            final Label l0 = new Label();
            mv.visitLabel( l0 );


            mv.visitVarInsn( Opcodes.ALOAD,
                             1 );
            mv.visitTypeInsn( Opcodes.CHECKCAST,
                              Type.getInternalName( originalClass ) );


            mv.visitVarInsn( Type.getType( fieldType ).getOpcode( Opcodes.ILOAD ),

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            mv.visitVarInsn( Opcodes.ALOAD,
                             1 );
            mv.visitTypeInsn( Opcodes.CHECKCAST,
                              Type.getInternalName( originalClass ) );


            mv.visitVarInsn( Type.getType( fieldType ).getOpcode( Opcodes.ILOAD ),
                             2 );


            if ( !fieldType.isPrimitive() ) {
                mv.visitTypeInsn( Opcodes.CHECKCAST,
                                  Type.getInternalName( fieldType ) );

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                        mv.visitIntInsn( Opcodes.SIPUSH,
                                         1237 );
                        mv.visitLabel( blabel2 );
                    } else if ( "long".equals( field.getTypeName() ) ) {
                        // attr_hash ::== (int) (longAttr ^ (longAttr >>> 32))
                        mv.visitVarInsn( Opcodes.ALOAD,
                                         0 );
                        mv.visitFieldInsn( Opcodes.GETFIELD,
                                           getInternalType( classDef.getClassName() ),
                                           field.getName(),
                                           getTypeDescriptor( field.getTypeName() ) );

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