52 lines
2.2 KiB
C++
52 lines
2.2 KiB
C++
/*=============================================================================
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Copyright (c) 2001-2011 Hartmut Kaiser
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Distributed under the Boost Software License, Version 1.0. (See accompanying
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file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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=============================================================================*/
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#if !defined(BOOST_SPIRIT_CONJURE_LEXER_CONFIG_HPP)
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#define BOOST_SPIRIT_CONJURE_LEXER_CONFIG_HPP
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///////////////////////////////////////////////////////////////////////////////
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// The conjure lexer example can be built in 3 different variations:
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//
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// - With a lexer using runtime generated DFA tables
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// - With a lexer using pre-generated (static) DFA tables
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// - With a lexer using a pre-generated custom switch based state machine
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//
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// Use one of the following preprocessor constants to define, which of those
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// will be built:
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///////////////////////////////////////////////////////////////////////////////
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// Use the lexer based on runtime generated DFA tables
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// #define CONJURE_LEXER_DYNAMIC_TABLES 1
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///////////////////////////////////////////////////////////////////////////////
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// Use the lexer based on pre-generated static DFA tables
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// #define CONJURE_LEXER_STATIC_TABLES 1
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///////////////////////////////////////////////////////////////////////////////
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// Use the lexer based on runtime generated DFA tables
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// #define CONJURE_LEXER_STATIC_SWITCH 1
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///////////////////////////////////////////////////////////////////////////////
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// The default is to use the dynamic table driven lexer
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#if CONJURE_LEXER_DYNAMIC_TABLES == 0 && \
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CONJURE_LEXER_STATIC_TABLES == 0 && \
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CONJURE_LEXER_STATIC_SWITCH == 0
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#define CONJURE_LEXER_DYNAMIC_TABLES 1
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#endif
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///////////////////////////////////////////////////////////////////////////////
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// Make sure we have only one lexer type selected
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#if (CONJURE_LEXER_DYNAMIC_TABLES != 0 && CONJURE_LEXER_STATIC_TABLES != 0) || \
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(CONJURE_LEXER_DYNAMIC_TABLES != 0 && CONJURE_LEXER_STATIC_SWITCH != 0) || \
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(CONJURE_LEXER_STATIC_TABLES != 0 && CONJURE_LEXER_STATIC_SWITCH != 0)
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#error "Configuration problem: please select exactly one type of lexer to build"
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#endif
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#endif
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