ShiftRightUnsigned() public abstract method

Pops two values from the stack, shifts the first to the right, then pushes the result to the stack. The sign bit is not preserved.
public abstract ShiftRightUnsigned ( ) : void
return void
示例#1
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        /// <summary>
        /// Generates CIL for the expression.
        /// </summary>
        /// <param name="generator"> The generator to output the CIL to. </param>
        /// <param name="optimizationInfo"> Information about any optimizations that should be performed. </param>
        public override void GenerateCode(ILGenerator generator, OptimizationInfo optimizationInfo)
        {
            // If a return value is not expected, generate only the side-effects.

            /*if (optimizationInfo.SuppressReturnValue == true)
             * {
             *  this.GenerateSideEffects(generator, optimizationInfo);
             *  return;
             * }*/

            // Special case the addition operator.
            if (this.OperatorType == OperatorType.Add)
            {
                GenerateAdd(generator, optimizationInfo);
                return;
            }

            // Special case the instanceof operator.
            if (this.OperatorType == OperatorType.InstanceOf)
            {
                GenerateInstanceOf(generator, optimizationInfo);
                return;
            }

            // Special case the in operator.
            if (this.OperatorType == OperatorType.In)
            {
                GenerateIn(generator, optimizationInfo);
                return;
            }

            // Special case the relational operators.
            if (this.OperatorType == OperatorType.LessThan ||
                this.OperatorType == OperatorType.LessThanOrEqual ||
                this.OperatorType == OperatorType.GreaterThan ||
                this.OperatorType == OperatorType.GreaterThanOrEqual)
            {
                GenerateRelational(generator, optimizationInfo);
                return;
            }

            // Special case the logical operators.
            if (this.OperatorType == OperatorType.LogicalAnd ||
                this.OperatorType == OperatorType.LogicalOr)
            {
                GenerateLogical(generator, optimizationInfo);
                return;
            }

            // Load the left hand side onto the stack.
            this.Left.GenerateCode(generator, optimizationInfo);

            // Convert the left argument.
            switch (this.OperatorType)
            {
            // Arithmetic operations.
            case OperatorType.Subtract:
            case OperatorType.Multiply:
            case OperatorType.Divide:
            case OperatorType.Modulo:
            case OperatorType.Exponentiation:
                EmitConversion.ToNumber(generator, this.Left.ResultType);
                break;

            // Bitwise operations.
            case OperatorType.BitwiseAnd:
            case OperatorType.BitwiseOr:
            case OperatorType.BitwiseXor:
            case OperatorType.LeftShift:
            case OperatorType.SignedRightShift:
            case OperatorType.UnsignedRightShift:
                EmitConversion.ToInt32(generator, this.Left.ResultType);
                break;

            // Equality operations.
            case OperatorType.Equal:
            case OperatorType.StrictlyEqual:
            case OperatorType.NotEqual:
            case OperatorType.StrictlyNotEqual:
                EmitConversion.ToAny(generator, this.Left.ResultType);
                break;
            }

            // Load the right hand side onto the stack.
            this.Right.GenerateCode(generator, optimizationInfo);

            // Convert the right argument.
            switch (this.OperatorType)
            {
            // Arithmetic operations.
            case OperatorType.Subtract:
            case OperatorType.Multiply:
            case OperatorType.Divide:
            case OperatorType.Modulo:
            case OperatorType.Exponentiation:
                EmitConversion.ToNumber(generator, this.Right.ResultType);
                break;

            // Bitwise operations.
            case OperatorType.BitwiseAnd:
            case OperatorType.BitwiseOr:
            case OperatorType.BitwiseXor:
                EmitConversion.ToInt32(generator, this.Right.ResultType);
                break;

            case OperatorType.LeftShift:
            case OperatorType.SignedRightShift:
            case OperatorType.UnsignedRightShift:
                EmitConversion.ToUInt32(generator, this.Right.ResultType);
                generator.LoadInt32(0x1F);
                generator.BitwiseAnd();
                break;

            // Equality operations.
            case OperatorType.Equal:
            case OperatorType.StrictlyEqual:
            case OperatorType.NotEqual:
            case OperatorType.StrictlyNotEqual:
                EmitConversion.ToAny(generator, this.Right.ResultType);
                break;
            }

            // Apply the operator.
            switch (this.OperatorType)
            {
            // Arithmetic operations.
            case OperatorType.Subtract:
                generator.Subtract();
                break;

            case OperatorType.Multiply:
                generator.Multiply();
                break;

            case OperatorType.Divide:
                generator.Divide();
                break;

            case OperatorType.Modulo:
                generator.Remainder();
                break;

            case OperatorType.Exponentiation:
                generator.CallStatic(ReflectionHelpers.Math_Pow);
                break;

            // Bitwise operations.
            case OperatorType.BitwiseAnd:
                generator.BitwiseAnd();
                break;

            case OperatorType.BitwiseOr:
                generator.BitwiseOr();
                break;

            case OperatorType.BitwiseXor:
                generator.BitwiseXor();
                break;

            // Shift operations.
            case OperatorType.LeftShift:
                generator.ShiftLeft();
                break;

            case OperatorType.SignedRightShift:
                generator.ShiftRight();
                break;

            case OperatorType.UnsignedRightShift:
                generator.ShiftRightUnsigned();
                EmitConversion.ToNumber(generator, PrimitiveType.UInt32);
                break;

            // Equality operations.
            case OperatorType.Equal:
                generator.Call(ReflectionHelpers.TypeComparer_Equals);
                break;

            case OperatorType.StrictlyEqual:
                generator.Call(ReflectionHelpers.TypeComparer_StrictEquals);
                break;

            case OperatorType.NotEqual:
                generator.Call(ReflectionHelpers.TypeComparer_Equals);
                generator.LoadBoolean(false);
                generator.CompareEqual();
                break;

            case OperatorType.StrictlyNotEqual:
                generator.Call(ReflectionHelpers.TypeComparer_StrictEquals);
                generator.LoadBoolean(false);
                generator.CompareEqual();
                break;

            default:
                throw new NotImplementedException(string.Format("Unsupported operator {0}", this.OperatorType));
            }
        }
        /// <summary>
        /// Generates CIL for the expression.
        /// </summary>
        /// <param name="generator"> The generator to output the CIL to. </param>
        /// <param name="optimizationInfo"> Information about any optimizations that should be performed. </param>
        public override void GenerateCode(ILGenerator generator, OptimizationInfo optimizationInfo)
        {
            // If a return value is not expected, generate only the side-effects.
            /*if (optimizationInfo.SuppressReturnValue == true)
            {
                this.GenerateSideEffects(generator, optimizationInfo);
                return;
            }*/

            // Special case the addition operator.
            if (this.OperatorType == OperatorType.Add)
            {
                GenerateAdd(generator, optimizationInfo);
                return;
            }

            // Special case the instanceof operator.
            if (this.OperatorType == OperatorType.InstanceOf)
            {
                GenerateInstanceOf(generator, optimizationInfo);
                return;
            }

            // Special case the in operator.
            if (this.OperatorType == OperatorType.In)
            {
                GenerateIn(generator, optimizationInfo);
                return;
            }

            // Special case the relational operators.
            if (this.OperatorType == OperatorType.LessThan ||
                this.OperatorType == OperatorType.LessThanOrEqual ||
                this.OperatorType == OperatorType.GreaterThan ||
                this.OperatorType == OperatorType.GreaterThanOrEqual)
            {
                GenerateRelational(generator, optimizationInfo);
                return;
            }

            // Special case the logical operators.
            if (this.OperatorType == OperatorType.LogicalAnd ||
                this.OperatorType == OperatorType.LogicalOr)
            {
                GenerateLogical(generator, optimizationInfo);
                return;
            }

            // Load the left hand side onto the stack.
            this.Left.GenerateCode(generator, optimizationInfo);

            // Convert the left argument.
            switch (this.OperatorType)
            {
                // Arithmetic operations.
                case OperatorType.Subtract:
                case OperatorType.Multiply:
                case OperatorType.Divide:
                case OperatorType.Modulo:
                    EmitConversion.ToNumber(generator, this.Left.ResultType);
                    break;

                // Bitwise operations.
                case OperatorType.BitwiseAnd:
                case OperatorType.BitwiseOr:
                case OperatorType.BitwiseXor:
                case OperatorType.LeftShift:
                case OperatorType.SignedRightShift:
                case OperatorType.UnsignedRightShift:
                    EmitConversion.ToInt32(generator, this.Left.ResultType);
                    break;

                // Equality operations.
                case OperatorType.Equal:
                case OperatorType.StrictlyEqual:
                case OperatorType.NotEqual:
                case OperatorType.StrictlyNotEqual:
                    EmitConversion.ToAny(generator, this.Left.ResultType);
                    break;
            }

            // Load the right hand side onto the stack.
            this.Right.GenerateCode(generator, optimizationInfo);

            // Convert the right argument.
            switch (this.OperatorType)
            {
                // Arithmetic operations.
                case OperatorType.Subtract:
                case OperatorType.Multiply:
                case OperatorType.Divide:
                case OperatorType.Modulo:
                    EmitConversion.ToNumber(generator, this.Right.ResultType);
                    break;

                // Bitwise operations.
                case OperatorType.BitwiseAnd:
                case OperatorType.BitwiseOr:
                case OperatorType.BitwiseXor:
                    EmitConversion.ToInt32(generator, this.Right.ResultType);
                    break;
                case OperatorType.LeftShift:
                case OperatorType.SignedRightShift:
                case OperatorType.UnsignedRightShift:
                    EmitConversion.ToUInt32(generator, this.Right.ResultType);
                    generator.LoadInt32(0x1F);
                    generator.BitwiseAnd();
                    break;

                // Equality operations.
                case OperatorType.Equal:
                case OperatorType.StrictlyEqual:
                case OperatorType.NotEqual:
                case OperatorType.StrictlyNotEqual:
                    EmitConversion.ToAny(generator, this.Right.ResultType);
                    break;
            }

            // Apply the operator.
            switch (this.OperatorType)
            {
                // Arithmetic operations.
                case OperatorType.Subtract:
                    generator.Subtract();
                    break;
                case OperatorType.Multiply:
                    generator.Multiply();
                    break;
                case OperatorType.Divide:
                    generator.Divide();
                    break;
                case OperatorType.Modulo:
                    generator.Remainder();
                    break;

                // Bitwise operations.
                case OperatorType.BitwiseAnd:
                    generator.BitwiseAnd();
                    break;
                case OperatorType.BitwiseOr:
                    generator.BitwiseOr();
                    break;
                case OperatorType.BitwiseXor:
                    generator.BitwiseXor();
                    break;

                // Shift operations.
                case OperatorType.LeftShift:
                    generator.ShiftLeft();
                    break;
                case OperatorType.SignedRightShift:
                    generator.ShiftRight();
                    break;
                case OperatorType.UnsignedRightShift:
                    generator.ShiftRightUnsigned();
                    EmitConversion.ToNumber(generator, PrimitiveType.UInt32);
                    break;

                // Equality operations.
                case OperatorType.Equal:
                    generator.Call(ReflectionHelpers.TypeComparer_Equals);
                    break;
                case OperatorType.StrictlyEqual:
                    generator.Call(ReflectionHelpers.TypeComparer_StrictEquals);
                    break;
                case OperatorType.NotEqual:
                    generator.Call(ReflectionHelpers.TypeComparer_Equals);
                    generator.LoadBoolean(false);
                    generator.CompareEqual();
                    break;
                case OperatorType.StrictlyNotEqual:
                    generator.Call(ReflectionHelpers.TypeComparer_StrictEquals);
                    generator.LoadBoolean(false);
                    generator.CompareEqual();
                    break;

                default:
                    throw new NotImplementedException(string.Format("Unsupported operator {0}", this.OperatorType));
            }
        }