| /* |
| * [The "BSD licence"] |
| * Copyright (c) 2005-2008 Terence Parr |
| * All rights reserved. |
| * |
| * Conversion to C#: |
| * Copyright (c) 2008-2009 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. |
| */ |
| |
| namespace Antlr.Runtime |
| { |
| |
| /** <summary>A source of characters for an ANTLR lexer</summary> */ |
| public interface ICharStream : IIntStream |
| { |
| |
| /** <summary> |
| * For infinite streams, you don't need this; primarily I'm providing |
| * a useful interface for action code. Just make sure actions don't |
| * use this on streams that don't support it. |
| * </summary> |
| */ |
| string Substring( int start, int length ); |
| |
| /** <summary> |
| * Get the ith character of lookahead. This is the same usually as |
| * LA(i). This will be used for labels in the generated |
| * lexer code. I'd prefer to return a char here type-wise, but it's |
| * probably better to be 32-bit clean and be consistent with LA. |
| * </summary> |
| */ |
| int LT( int i ); |
| |
| /** <summary>ANTLR tracks the line information automatically</summary> */ |
| /** <summary>Because this stream can rewind, we need to be able to reset the line</summary> */ |
| int Line |
| { |
| get; |
| set; |
| } |
| |
| /** <summary>The index of the character relative to the beginning of the line 0..n-1</summary> */ |
| int CharPositionInLine |
| { |
| get; |
| set; |
| } |
| } |
| } |
