BinaryOperationBinder.cs source code in C# .NET

Source code for the .NET framework in C#

                        

Code:

/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / Core / Microsoft / Scripting / Actions / BinaryOperationBinder.cs / 1305376 / BinaryOperationBinder.cs

                            /* **************************************************************************** 
 *
 * Copyright (c) Microsoft Corporation.
 *
 * This source code is subject to terms and conditions of the Microsoft Public License. A 
 * copy of the license can be found in the License.html file at the root of this distribution. If
 * you cannot locate the  Microsoft Public License, please send an email to 
 * dlr@microsoft.com. By using this source code in any fashion, you are agreeing to be bound 
 * by the terms of the Microsoft Public License.
 * 
 * You must not remove this notice, or any other, from this software.
 *
 *
 * ***************************************************************************/ 

using System.Dynamic.Utils; 
using System.Linq.Expressions; 

namespace System.Dynamic { 
    /// 
    /// Represents the binary dynamic operation at the call site, providing the binding semantic and the details about the operation.
    /// 
    public abstract class BinaryOperationBinder : DynamicMetaObjectBinder { 
        private ExpressionType _operation;
 
        ///  
        /// Initializes a new instance of the  class.
        ///  
        /// The binary operation kind.
        protected BinaryOperationBinder(ExpressionType operation) {
            ContractUtils.Requires(OperationIsValid(operation), "operation");
            _operation = operation; 
        }
 
        ///  
        /// The result type of the operation.
        ///  
        public override sealed Type ReturnType {
            get { return typeof(object); }
        }
 
        /// 
        /// The binary operation kind. 
        ///  
        public ExpressionType Operation {
            get { 
                return _operation;
            }
        }
 
        /// 
        /// Performs the binding of the binary dynamic operation if the target dynamic object cannot bind. 
        ///  
        /// The target of the dynamic binary operation.
        /// The right hand side operand of the dynamic binary operation. 
        /// The  representing the result of the binding.
        public DynamicMetaObject FallbackBinaryOperation(DynamicMetaObject target, DynamicMetaObject arg) {
            return FallbackBinaryOperation(target, arg, null);
        } 

        ///  
        /// When overridden in the derived class, performs the binding of the binary dynamic operation if the target dynamic object cannot bind. 
        /// 
        /// The target of the dynamic binary operation. 
        /// The right hand side operand of the dynamic binary operation.
        /// The binding result in case the binding fails, or null.
        /// The  representing the result of the binding.
        public abstract DynamicMetaObject FallbackBinaryOperation(DynamicMetaObject target, DynamicMetaObject arg, DynamicMetaObject errorSuggestion); 

        ///  
        /// Performs the binding of the dynamic binary operation. 
        /// 
        /// The target of the dynamic operation. 
        /// An array of arguments of the dynamic operation.
        /// The  representing the result of the binding.
        public sealed override DynamicMetaObject Bind(DynamicMetaObject target, DynamicMetaObject[] args) {
            ContractUtils.RequiresNotNull(target, "target"); 
            ContractUtils.RequiresNotNull(args, "args");
            ContractUtils.Requires(args.Length == 1, "args"); 
 
            var arg0 = args[0];
            ContractUtils.RequiresNotNull(arg0, "args"); 

            return target.BindBinaryOperation(this, arg0);
        }
 
        // this is a standard DynamicMetaObjectBinder
        internal override sealed bool IsStandardBinder { 
            get { 
                return true;
            } 
        }

        [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Maintainability", "CA1502:AvoidExcessiveComplexity")]
        internal static bool OperationIsValid(ExpressionType operation) { 
            switch (operation) {
                #region Generated Binary Operation Binder Validator 
 
                // *** BEGIN GENERATED CODE ***
                // generated by function: gen_binop_validator from: generate_tree.py 

                case ExpressionType.Add:
                case ExpressionType.And:
                case ExpressionType.Divide: 
                case ExpressionType.Equal:
                case ExpressionType.ExclusiveOr: 
                case ExpressionType.GreaterThan: 
                case ExpressionType.GreaterThanOrEqual:
                case ExpressionType.LeftShift: 
                case ExpressionType.LessThan:
                case ExpressionType.LessThanOrEqual:
                case ExpressionType.Modulo:
                case ExpressionType.Multiply: 
                case ExpressionType.NotEqual:
                case ExpressionType.Or: 
                case ExpressionType.Power: 
                case ExpressionType.RightShift:
                case ExpressionType.Subtract: 
                case ExpressionType.AddAssign:
                case ExpressionType.AndAssign:
                case ExpressionType.DivideAssign:
                case ExpressionType.ExclusiveOrAssign: 
                case ExpressionType.LeftShiftAssign:
                case ExpressionType.ModuloAssign: 
                case ExpressionType.MultiplyAssign: 
                case ExpressionType.OrAssign:
                case ExpressionType.PowerAssign: 
                case ExpressionType.RightShiftAssign:
                case ExpressionType.SubtractAssign:

                // *** END GENERATED CODE *** 

                #endregion 
 
                case ExpressionType.Extension:
                    return true; 

                default:
                    return false;
            } 
        }
    } 
} 

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.
                        

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