#region License
//=============================================================================
// Vici Core - Productivity Library for .NET 3.5
//
// Copyright (c) 2008-2010 Philippe Leybaert
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
// IN THE SOFTWARE.
//=============================================================================
#endregion
using System;
namespace Vici.Core.Parser{
public class VariableMatcher : ITokenMatcher, ITokenProcessor
{
private const string VALID_FIRSTCHARS = "abcdefghijkklmnopqrstuvwxyzABCDEFGHIJKKLMNOPQRSTUVWXYZ_@$";
private const string VALID_NEXTCHARS = "abcdefghijkklmnopqrstuvwxyzABCDEFGHIJKKLMNOPQRSTUVWXYZ_@$0123456789";
private bool _sawFirst;
public void ResetState()
{
_sawFirst = false;
}
ITokenProcessor ITokenMatcher.CreateTokenProcessor()
{
return new VariableMatcher();
}
TokenizerState ITokenProcessor.ProcessChar(char c, string fullExpression, int currentIndex)
{
if (!_sawFirst)
{
_sawFirst = true;
return VALID_FIRSTCHARS.IndexOf(c) >= 0 ? TokenizerState.Valid : TokenizerState.Fail;
}
return VALID_NEXTCHARS.IndexOf(c) >= 0 ? TokenizerState.Valid : TokenizerState.Success;
}
public string TranslateToken(string originalToken, ITokenProcessor tokenProcessor)
{
return originalToken;
}
}
}
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