LabelTarget.cs source code in C# .NET

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/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / Core / Microsoft / Scripting / Ast / LabelTarget.cs / 1305376 / LabelTarget.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; 
 
namespace System.Linq.Expressions {
 
    /// 
    /// Used to denote the target of a .
    /// 
    public sealed class LabelTarget { 
        private readonly Type _type;
        private readonly string _name; 
 
        internal LabelTarget(Type type, string name) {
            _type = type; 
            _name = name;
        }

        ///  
        /// Gets the name of the label.
        ///  
        /// The label's name is provided for information purposes only. 
        public string Name {
            get { return _name; } 
        }

        /// 
        /// The type of value that is passed when jumping to the label 
        /// (or System.Void if no value should be passed).
        ///  
        [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Naming", "CA1721:PropertyNamesShouldNotMatchGetMethods")] 
        public Type Type {
            get { return _type; } 
        }

        /// 
        /// Returns a  that represents the current . 
        /// 
        /// A  that represents the current .  
        public override string ToString() { 
            return String.IsNullOrEmpty(this.Name) ? "UnamedLabel" : this.Name;
        } 
    }

    public partial class Expression {
        ///  
        /// Creates a  representing a label with void type and no name.
        ///  
        /// The new . 
        public static LabelTarget Label() {
            return Label(typeof(void), null); 
        }

        /// 
        /// Creates a  representing a label with void type and the given name. 
        /// 
        /// The name of the label. 
        /// The new . 
        public static LabelTarget Label(string name) {
            return Label(typeof(void), name); 
        }

        /// 
        /// Creates a  representing a label with the given type. 
        /// 
        /// The type of value that is passed when jumping to the label. 
        /// The new . 
        public static LabelTarget Label(Type type) {
            return Label(type, null); 
        }

        /// 
        /// Creates a  representing a label with the given type and name. 
        /// 
        /// The type of value that is passed when jumping to the label. 
        /// The name of the label. 
        /// The new .
        public static LabelTarget Label(Type type, string name) { 
            ContractUtils.RequiresNotNull(type, "type");
            TypeUtils.ValidateType(type);
            return new LabelTarget(type, name);
        } 
    }
} 

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

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