159 lines
5.3 KiB
C++
159 lines
5.3 KiB
C++
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// (C) Copyright Edward Diener 2011-2015
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// Use, modification and distribution are subject to the Boost Software License,
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// Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt).
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#if !defined(BOOST_VMD_ASSERT_IS_IDENTIFIER_HPP)
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#define BOOST_VMD_ASSERT_IS_IDENTIFIER_HPP
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#include <boost/vmd/detail/setup.hpp>
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#if BOOST_PP_VARIADICS
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/*
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The succeeding comments in this file are in doxygen format.
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*/
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/** \file
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*/
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/** \def BOOST_VMD_ASSERT_IS_IDENTIFIER(...)
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\brief Asserts that the sequence is an identifier.
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The macro checks that the sequence is an identifier.
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If it is not an identifier, it forces a compiler error.
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The macro normally checks for an identifier only in
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debug mode. However an end-user can force the macro
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to check or not check by defining the macro
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BOOST_VMD_ASSERT_DATA to 1 or 0 respectively.
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... = variadic parameters
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The variadic parameters are:
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sequence = A sequence to test as an identifier.
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ids (optional) = The data may take one of two forms:
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it is either one or more single identifiers
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or a single Boost PP tuple of identifiers.
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returns = Normally the macro returns nothing.
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If the sequence is an identifier, nothing is
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output. If optional ids are specified, for the
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sequence to be an identifier it must be an
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identifier that matches one of the optional
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ids.
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For VC++, because there is no sure way of forcing
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a compiler error from within a macro without producing
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output, if the sequence is not an identifier the
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macro forces a compiler error by outputting invalid C++.
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For all other compilers a compiler error is forced
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without producing output if the sequence is not an
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identifier.
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Identifiers are registered in VMD with:
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#define BOOST_VMD_REG_XXX (XXX) where XXX is a v-identifier.
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The identifier must be registered to be found.
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Identifiers are pre-detected in VMD with:
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#define BOOST_VMD_DETECT_XXX_XXX where XXX is an identifier.
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If you specify optional ids and have not specified the detection
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of an optional id, that id will never match an identifier.
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*/
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/** \def BOOST_VMD_ASSERT_IS_IDENTIFIER_D(d,...)
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\brief Asserts that the sequence is an identifier. Re-entrant version.
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The macro checks that the sequence is an identifier.
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If it is not an identifier, it forces a compiler error.
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The macro normally checks for an identifier only in
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debug mode. However an end-user can force the macro
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to check or not check by defining the macro
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BOOST_VMD_ASSERT_DATA to 1 or 0 respectively.
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d = The next available BOOST_PP_WHILE iteration.
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... = variadic parameters
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The variadic parameters are:
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sequence = A sequence to test as an identifier.
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ids (optional) = The data may take one of two forms:
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it is either one or more single identifiers
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or a single Boost PP tuple of identifiers.
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returns = Normally the macro returns nothing.
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If the sequence is an identifier, nothing is
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output. If optional ids are specified, for the
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sequence to be an identifier it must be an
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identifier that matches one of the optional
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ids.
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For VC++, because there is no sure way of forcing
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a compiler error from within a macro without producing
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output, if the sequence is not an identifier the
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macro forces a compiler error by outputting invalid C++.
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For all other compilers a compiler error is forced
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without producing output if the sequence is not an
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identifier.
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Identifiers are registered in VMD with:
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#define BOOST_VMD_REG_XXX (XXX) where XXX is a v-identifier.
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The identifier must be registered to be found.
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Identifiers are pre-detected in VMD with:
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#define BOOST_VMD_DETECT_XXX_XXX where XXX is an identifier.
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If you specify optional ids and have not specified the detection
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of an optional id, that id will never match an identifier.
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*/
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#if !BOOST_VMD_ASSERT_DATA
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#define BOOST_VMD_ASSERT_IS_IDENTIFIER(...)
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#define BOOST_VMD_ASSERT_IS_IDENTIFIER_D(d,...)
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#else
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#include <boost/vmd/assert.hpp>
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#include <boost/vmd/is_identifier.hpp>
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#define BOOST_VMD_ASSERT_IS_IDENTIFIER(...) \
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BOOST_VMD_ASSERT \
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( \
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BOOST_VMD_IS_IDENTIFIER(__VA_ARGS__), \
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BOOST_VMD_IDENTIFIER_ASSERT_ERROR \
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) \
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/**/
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#define BOOST_VMD_ASSERT_IS_IDENTIFIER_D(d,...) \
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BOOST_VMD_ASSERT \
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( \
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BOOST_VMD_IS_IDENTIFIER_D(d,__VA_ARGS__), \
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BOOST_VMD_IDENTIFIER_ASSERT_ERROR \
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) \
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/**/
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#endif // !BOOST_VMD_ASSERT_DATA
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#endif /* BOOST_PP_VARIADICS */
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#endif /* BOOST_VMD_ASSERT_IS_IDENTIFIER_HPP */
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