SwitchCase.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 / Ast / SwitchCase.cs / 1305376 / SwitchCase.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.Collections.Generic; 
using System.Collections.ObjectModel; 
using System.Diagnostics;
using System.Dynamic.Utils; 

namespace System.Linq.Expressions {
    /// 
    /// Represents one case of a . 
    /// 
#if !SILVERLIGHT 
    [DebuggerTypeProxy(typeof(Expression.SwitchCaseProxy))] 
#endif
    public sealed class SwitchCase { 
        private readonly ReadOnlyCollection _testValues;
        private readonly Expression _body;

        internal SwitchCase(Expression body, ReadOnlyCollection testValues) { 
            _body = body;
            _testValues = testValues; 
        } 

        ///  
        /// Gets the values of this case. This case is selected for execution when the  matches any of these values.
        /// 
        public ReadOnlyCollection TestValues {
            get { return _testValues; } 
        }
 
        ///  
        /// Gets the body of this case.
        ///  
        public Expression Body {
            get { return _body; }
        }
 
        /// 
        /// Returns a  that represents the current . 
        ///  
        /// A  that represents the current . 
        public override string ToString() { 
            return ExpressionStringBuilder.SwitchCaseToString(this);
        }

        ///  
        /// Creates a new expression that is like this one, but using the
        /// supplied children. If all of the children are the same, it will 
        /// return this expression. 
        /// 
        /// The  property of the result. 
        /// The  property of the result.
        /// This expression if no children changed, or an expression with the updated children.
        public SwitchCase Update(IEnumerable testValues, Expression body) {
            if (testValues == TestValues && body == Body) { 
                return this;
            } 
            return Expression.SwitchCase(body, testValues); 
        }
    } 

    public partial class Expression {
        /// 
        /// Creates a SwitchCase for use in a . 
        /// 
        /// The body of the case. 
        /// The test values of the case. 
        /// The created SwitchCase.
        public static SwitchCase SwitchCase(Expression body, params Expression[] testValues) { 
            return SwitchCase(body, (IEnumerable)testValues);
        }

        ///  
        /// Creates a SwitchCase for use in a .
        ///  
        /// The body of the case. 
        /// The test values of the case.
        /// The created SwitchCase. 
        public static SwitchCase SwitchCase(Expression body, IEnumerable testValues) {
            RequiresCanRead(body, "body");

            var values = testValues.ToReadOnly(); 
            RequiresCanRead(values, "testValues");
            ContractUtils.RequiresNotEmpty(values, "testValues"); 
 
            return new SwitchCase(body, values);
        } 
    }
}

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

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