SymbolTable.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / Dotnetfx_Win7_3.5.1 / Dotnetfx_Win7_3.5.1 / 3.5.1 / DEVDIV / depot / DevDiv / releases / Orcas / NetFXw7 / ndp / fx / src / DataEntity / System / Data / SqlClient / SqlGen / SymbolTable.cs / 1 / SymbolTable.cs
                        

                        
                            //---------------------------------------------------------------------- 
// 
//      Copyright (c) Microsoft Corporation.  All rights reserved.
// 
// 
// @owner  [....], [....]
//--------------------------------------------------------------------- 
 
using System;
using System.Collections.Generic; 
using System.Diagnostics;
using System.IO;
using System.Text;
using System.Data.SqlClient; 
using System.Data.Metadata.Edm;
using System.Data.Common.CommandTrees; 
 
namespace System.Data.SqlClient.SqlGen
{ 
    /// 
    /// The symbol table is quite primitive - it is a stack with a new entry for
    /// each scope.  Lookups search from the top of the stack to the bottom, until
    /// an entry is found. 
    ///
    /// The symbols are of the following kinds 
    ///  
    ///  represents tables (extents/nested selects/unnests)
    ///  represents Join nodes 
    ///  columns.
    /// 
    ///
    /// Symbols represent names  to be resolved, 
    /// or things to be renamed.
    ///  
    internal sealed class SymbolTable 
    {
        private List> symbols = new List>(); 

        internal void EnterScope()
        {
            symbols.Add(new Dictionary(StringComparer.OrdinalIgnoreCase)); 
        }
 
        internal void ExitScope() 
        {
            symbols.RemoveAt(symbols.Count - 1); 
        }

        internal void Add(string name, Symbol value)
        { 
            symbols[symbols.Count - 1][name] = value;
        } 
 
        internal Symbol Lookup(string name)
        { 
            for (int i = symbols.Count - 1; i >= 0; --i)
            {
                if (symbols[i].ContainsKey(name))
                { 
                    return symbols[i][name];
                } 
            } 

            return null; 
        }
    }
}

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
//---------------------------------------------------------------------- 
// 
//      Copyright (c) Microsoft Corporation.  All rights reserved.
// 
// 
// @owner  [....], [....]
//--------------------------------------------------------------------- 
 
using System;
using System.Collections.Generic; 
using System.Diagnostics;
using System.IO;
using System.Text;
using System.Data.SqlClient; 
using System.Data.Metadata.Edm;
using System.Data.Common.CommandTrees; 
 
namespace System.Data.SqlClient.SqlGen
{ 
    /// 
    /// The symbol table is quite primitive - it is a stack with a new entry for
    /// each scope.  Lookups search from the top of the stack to the bottom, until
    /// an entry is found. 
    ///
    /// The symbols are of the following kinds 
    ///  
    ///  represents tables (extents/nested selects/unnests)
    ///  represents Join nodes 
    ///  columns.
    /// 
    ///
    /// Symbols represent names  to be resolved, 
    /// or things to be renamed.
    ///  
    internal sealed class SymbolTable 
    {
        private List> symbols = new List>(); 

        internal void EnterScope()
        {
            symbols.Add(new Dictionary(StringComparer.OrdinalIgnoreCase)); 
        }
 
        internal void ExitScope() 
        {
            symbols.RemoveAt(symbols.Count - 1); 
        }

        internal void Add(string name, Symbol value)
        { 
            symbols[symbols.Count - 1][name] = value;
        } 
 
        internal Symbol Lookup(string name)
        { 
            for (int i = symbols.Count - 1; i >= 0; --i)
            {
                if (symbols[i].ContainsKey(name))
                { 
                    return symbols[i][name];
                } 
            } 

            return null; 
        }
    }
}

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

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