runtime/CSharp3/Sources/Antlr3.Runtime.Test/PreprocessorLexer.g3

/*
 * [The "BSD license"]
 * Copyright (c) 2011 Terence Parr
 * All rights reserved.
 *
 * Conversion to C#:
 * Copyright (c) 2011 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.
 */

lexer grammar PreprocessorLexer;

options
{
	language=CSharp3;
}

@namespace{Antlr3.Runtime.Test}

PP_SKIPPED_CHARACTERS
	:	{false}? => ~(F_NEW_LINE_CHARACTER | F_PP_POUND_SIGN) F_INPUT_CHARACTER*
	;
  
DELIMITED_COMMENT
	:	{true}? => '/*' .* '*/'
	;
  
WHITESPACE
	:	F_WHITESPACE {Skip();}
	;
  
fragment F_WHITESPACE
	:	(' ' | '\t' | '\v' | '\f')+ 
	;

fragment F_NEW_LINE_CHARACTER
	:	'\r'
	|	'\n'
	;
  
fragment F_PP_POUND_SIGN
	:	'#'
	;
  
fragment F_INPUT_CHARACTER
	:	~F_NEW_LINE_CHARACTER
	;