Emitter.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 / DataEntityDesign / Design / System / Data / EntityModel / Emitters / Emitter.cs / 1305376 / Emitter.cs
                        

                        
                            //---------------------------------------------------------------------- 
// 
//      Copyright (c) Microsoft Corporation.  All rights reserved.
// 
// 
// @owner       [....]
// @backupOwner [....] 
//--------------------------------------------------------------------- 

using System; 
using System.CodeDom;
using System.Diagnostics;
using System.Data.EntityModel.SchemaObjectModel;
 

 
 
namespace System.Data.EntityModel.Emitters
{ 
    /// 
    ///
    /// 
    internal abstract class Emitter 
    {
        #region Instance Fields 
        private ClientApiGenerator _generator = null; 
        #endregion
 
        #region Static Fields
        private static CodeExpression _nullExpression = null;
        private static CodeExpression _thisRef = null;
 
        /// Name of property used to get StorageContext from an Entity
        private const string EntityGetContextPropertyName = "Context"; 
        /// Name of property used to get StorageContext from a StorageSearcher 
        protected const string SearcherGetContextPropertyName = "Context";
        #endregion 

        #region Protected Methods
        /// 
        /// 
        /// 
        ///  
        protected Emitter(ClientApiGenerator generator) 
        {
            Generator = generator; 
        }

        /// 
        /// 
        /// 
        ///  
        ///  
        protected static CodeBinaryOperatorExpression EmitExpressionEqualsNull(CodeExpression expression)
        { 
            return new CodeBinaryOperatorExpression(expression, CodeBinaryOperatorType.IdentityEquality, NullExpression);
        }

        protected static CodeBinaryOperatorExpression EmitExpressionDoesNotEqualNull(CodeExpression expression) 
        {
            return new CodeBinaryOperatorExpression(expression, CodeBinaryOperatorType.IdentityInequality, NullExpression); 
        } 

        internal static CodeExpression EmitEnumMemberExpression(CodeTypeReference type, string member) 
        {
            CodeTypeReferenceExpression typeref = new CodeTypeReferenceExpression(type);
            return new CodeFieldReferenceExpression(typeref, member);
        } 
        #endregion
 
        #region Protected Properties 
        /// 
        /// 
        /// 
        protected static CodeExpression ThisRef
        {
            get 
            {
                if (_thisRef == null) 
                    _thisRef = new CodeThisReferenceExpression(); 
                return _thisRef;
            } 
        }

        /// 
        /// 
        /// 
        internal ClientApiGenerator Generator 
        { 
            get
            { 
                return _generator;
            }
            private set
            { 
                _generator = value;
            } 
        } 

        protected TypeReference TypeReference 
        {
            get
            {
                return _generator.TypeReference; 
            }
        } 
 
        protected AttributeEmitter AttributeEmitter
        { 
            get { return _generator.AttributeEmitter; }
        }

        protected static CodeExpression NullExpression 
        {
            get 
            { 
                if (_nullExpression == null)
                    _nullExpression = new CodePrimitiveExpression(null); 

                return _nullExpression;

            } 
        }
 
        #endregion 
    }
} 

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.

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