1[/============================================================================== 2 Copyright (C) 2001-2011 Hartmut Kaiser 3 Copyright (C) 2001-2011 Joel de Guzman 4 5 Distributed under the Boost Software License, Version 1.0. (See accompanying 6 file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) 7===============================================================================/] 8 9[section:primitives Token definition Primitives] 10 11This module includes different primitives allowing you to create token definitions. 12It includes `char_`, character literals, `string`, and string literals. 13 14[heading Module Headers] 15 16 // forwards to <boost/spirit/home/lex/primitives.hpp> 17 #include <boost/spirit/include/lex_primitives.hpp> 18 19Also, see __include_structure__. 20 21[/////////////////////////////////////////////////////////////////////////////] 22[section:char_tokendef Tokens Matching Single Characters] 23 24[heading Description] 25 26The character based token definitions described in this section are: 27 28The `char_` creates token definitions matching single characters. The `char_` 29token definition is associated `standard` encoding namespace. This is 30needed when doing basic operations such as forcing lower or upper case and 31dealing with character ranges. 32 33[heading Header] 34 35[heading Module Headers] 36 37 // forwards to <boost/spirit/home/lex/lexer/char_token_def.hpp> 38 #include <boost/spirit/include/lex_char_token_def.hpp> 39 40Also, see __include_structure__. 41 42[heading Namespace] 43 44[table 45 [[Name]] 46 [[`lex::char_`]] 47] 48 49[heading Model of] 50 51[:__primitive_lexer_concept__] 52 53[variablelist Notation 54 [[`ch`] [Character-class specific character from `standard` character 55 set.]] 56] 57 58[heading Expression Semantics] 59 60Semantics of an expression is defined only where it differs from, or is not 61defined in __primitive_lexer_concept__. 62 63[table 64 [[Expression] [Description]] 65 [[`ch`] [Create a token definition matching the character 66 literal `ch`. ]] 67 [[`lex::char_(ch)`] [Create a token definition matching the character 68 `ch`.]] 69] 70 71[heading Example] 72 73 74[endsect] [/ char] 75 76[endsect] [/ Module] 77