Identifier.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 / DataEntity / System / Data / Common / EntitySql / AST / Identifier.cs / 1305376 / Identifier.cs
                        

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

namespace System.Data.Common.EntitySql.AST 
{
    using System;
    using System.Globalization;
    using System.Collections; 
    using System.Collections.Generic;
    using System.Diagnostics; 
    using System.Text; 

    ///  
    /// Represents an identifier ast node.
    /// 
    internal sealed class Identifier : Node
    { 
        private readonly string _name;
        private readonly bool _isEscaped; 
 
        /// 
        /// Initializes identifier. 
        /// 
        internal Identifier(string symbol, bool isEscaped, string query, int inputPos) : base(query, inputPos)
        {
            Debug.Assert(!String.IsNullOrEmpty(symbol), "symbol must not be null or empty"); 

            string name = symbol; 
 
            if (isEscaped)
            { 
                if (name.Length < 2 ||
                    name[0] != '[' || name[name.Length - 1] != ']')
                {
                    throw EntityUtil.EntitySqlError(this.ErrCtx, System.Data.Entity.Strings.InvalidEscapedIdentifier(name)); 
                }
                name = name.Substring(1, name.Length - 2); 
            } 
            else
            { 
                bool isIdentifierASCII = true;
                if (!CqlLexer.IsLetterOrDigitOrUnderscore(name, out isIdentifierASCII))
                {
                    if (isIdentifierASCII) 
                    {
                        throw EntityUtil.EntitySqlError(this.ErrCtx, System.Data.Entity.Strings.InvalidSimpleIdentifier(name)); 
                    } 
                    else
                    { 
                        throw EntityUtil.EntitySqlError(this.ErrCtx, System.Data.Entity.Strings.InvalidSimpleIdentifierNonASCII(name));
                    }
                }
            } 

            _name = name; 
            _isEscaped = isEscaped; 
        }
 
        /// 
        /// Returns identifier name (without escaping chars).
        /// 
        internal string Name 
        {
            get { return _name; } 
        } 

        ///  
        /// True if an identifier is escaped.
        /// 
        internal bool IsEscaped
        { 
            get { return _isEscaped; }
        } 
    } 
}

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

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