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/*
* [The "BSD licence"]
* Copyright (c) 2005-2008 Terence Parr
* All rights reserved.
*
* Conversion to C#:
* Copyright (c) 2008 Sam Harwell, Pixel Mine, Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
using System;
using System.Linq;
namespace Antlr.Runtime.JavaExtensions
{
public class StringTokenizer
{
string[] _tokens;
int _current;
public StringTokenizer( string str, string separator )
: this( str, separator, false )
{
}
public StringTokenizer( string str, string separator, bool returnDelims )
{
_tokens = str.Split( separator.ToCharArray(), StringSplitOptions.None );
if ( returnDelims )
{
char[] delims = separator.ToCharArray();
_tokens = _tokens.SelectMany( ( token, i ) =>
{
if ( i == _tokens.Length - 1 )
{
if ( delims.Contains( str[str.Length - 1] ) )
return new string[0];
else
return new string[] { token };
}
else if ( i == 0 )
{
if ( delims.Contains( str[0] ) )
return new string[] { str[0].ToString() };
else
return new string[] { token };
}
else
{
return new string[] { token, str[_tokens.Take( i + 1 ).Select( t => t.Length + 1 ).Sum() - 1].ToString() };
}
} ).ToArray();
}
}
public bool hasMoreTokens()
{
return _current < _tokens.Length;
}
public string nextToken()
{
return _tokens[_current++];
}
}
}
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