source: trunk/yao/share/antlr-2.7.7/lib/csharp/antlr.runtime/antlr/LexerSharedInputState.cs @ 1

using System;
using Stream                    = System.IO.Stream;
using TextReader                = System.IO.TextReader;

namespace antlr
{
        /*ANTLR Translator Generator
        * Project led by Terence Parr at http://www.jGuru.com
        * Software rights: http://www.antlr.org/license.html
        *
        * $Id:$
        */
        
        //
        // ANTLR C# Code Generator by Micheal Jordan
        //                            Kunle Odutola       : kunle UNDERSCORE odutola AT hotmail DOT com
        //                            Anthony Oguntimehin
        //
        // With many thanks to Eric V. Smith from the ANTLR list.
        //

        /*This object contains the data associated with an
        *  input stream of characters.  Multiple lexers
        *  share a single LexerSharedInputState to lex
        *  the same input stream.
        */
        public class LexerSharedInputState
        {
                protected internal int column;
                protected internal int line;
                protected internal int tokenStartColumn;
                protected internal int tokenStartLine;
                protected internal InputBuffer input;
                
                /*What file (if known) caused the problem? */
                protected internal string filename;
                
                public int guessing;
                
                public LexerSharedInputState(InputBuffer inbuf)
                {
                        initialize();
                        input = inbuf;
                }
                
                public LexerSharedInputState(Stream inStream) : this(new ByteBuffer(inStream))
                {
                }
                
                public LexerSharedInputState(TextReader inReader) : this(new CharBuffer(inReader))
                {
                }
                
                private void initialize()
                {
                        column = 1;
                        line = 1;
                        tokenStartColumn = 1;
                        tokenStartLine = 1;
                        guessing = 0;
                        filename = null;
                }
                
                public virtual void reset()
                {
                        initialize();
                        input.reset();
                }

                public virtual void resetInput(InputBuffer ib)
                {
                        reset();
                        input = ib;
                }

                public virtual void resetInput(Stream s)
                {
                        reset();
                        input = new ByteBuffer(s);
                }

                public virtual void resetInput(TextReader tr)
                {
                        reset();
                        input = new CharBuffer(tr);
                }
        }
}