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85 lines
3.2 KiB
Plaintext
85 lines
3.2 KiB
Plaintext
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m4_dnl
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m4_dnl Copyright (C) 2000 Stephen Cleary
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m4_dnl
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m4_dnl Distributed under the Boost Software License, Version 1.0. (See accompany-
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m4_dnl ing file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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m4_dnl
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m4_dnl See http://www.boost.org for updates, documentation, and revision history.
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m4_dnl
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m4_dnl
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m4_dnl
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m4_dnl Avoid the use of any m4_* identifiers in this header file,
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m4_dnl as that may cause incompatibility problems with future
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m4_dnl versions of m4.
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m4_dnl
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m4_dnl This is a normal header file, except that lines starting
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m4_dnl with `m4_dnl' will be stripped, TBA_FOR
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m4_dnl macros will be replaced with repeated text, and text in
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m4_dnl single quotes (`...') will have their single quotes
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m4_dnl stripped.
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m4_dnl
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m4_dnl
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m4_dnl Check to make sure NumberOfArguments was defined. If it's not defined,
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m4_dnl default to 3
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m4_dnl
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m4_ifdef(`NumberOfArguments', , `m4_errprint(m4___file__:m4___line__`: NumberOfArguments is not defined; defaulting to 3
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')m4_define(`NumberOfArguments', 3)')m4_dnl
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m4_ifelse(NumberOfArguments, , `m4_errprint(m4___file__:m4___line__`: NumberOfArguments is defined to be empty; defaulting to 3
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')m4_define(`NumberOfArguments', 3)')m4_dnl
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m4_dnl
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m4_dnl Check to make sure NumberOfArguments >= 1. If it's not, then fatal error.
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m4_dnl
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m4_ifelse(m4_eval(NumberOfArguments < 1), 1, `m4_errprint(m4___file__:m4___line__`: NumberOfArguments ('NumberOfArguments`) is less than 1
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')m4_m4exit(1)')m4_dnl
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m4_dnl
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m4_dnl Include the BOOST_M4_FOR macro definition
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m4_dnl
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m4_include(`for.m4')`'m4_dnl
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m4_dnl
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m4_dnl Begin the generated file.
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m4_dnl
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// Copyright (C) 2000 Stephen Cleary
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//
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// Distributed under the Boost Software License, Version 1.0. (See accompany-
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// ing file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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//
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// See http://www.boost.org for updates, documentation, and revision history.
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m4_dnl These warnings apply to the file generated from this file.
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m4_dnl Of course, you may freely edit this file.
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// This file was AUTOMATICALLY GENERATED from "m4___file__"
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// Do NOT include directly!
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// Do NOT edit!
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m4_dnl
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m4_dnl First we define a simple 'cv_qual' macro which takes a number, either
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m4_dnl 0, 1, 2, or 3, and determines cv-qualification.
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m4_dnl
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m4_define(`cv_qual',
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`m4_ifelse($1, 0, `',
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`m4_ifelse($1, 1, `const ',
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`m4_ifelse($1, 2, `volatile ',
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`m4_ifelse($1, 3, `const volatile ',
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`m4_errprint(m4___file__:m4___line__: `Boost m4 script: cv-determiner: Not 0, 1, 2, or 3 (was '$1`)')'
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)')')')')m4_dnl
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m4_dnl
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m4_dnl Next we go through the actual loop. For each number of arguments from
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m4_dnl 1 to NumberOfArguments, we create a template function that takes that
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m4_dnl many template arguments, and also generate all cv-qualified permutations
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m4_dnl of that function.
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m4_dnl
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BOOST_M4_FOR(N, 1, NumberOfArguments + 1,
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`BOOST_M4_FOR(cv, 0, m4_eval(4 ** N),
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`template <BOOST_M4_FOR(i, 0, N, `typename T`'i', `, ')>
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element_type * construct(BOOST_M4_FOR(i, 0, N,
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`cv_qual(m4_eval((cv >> (i * 2)) % 4))T`'i & a`'i', `, '))
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{
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element_type * const ret = (malloc)();
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if (ret == 0)
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return ret;
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try { new (ret) element_type(BOOST_M4_FOR(i, 0, N, `a`'i', `, ')); }
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catch (...) { (free)(ret); throw; }
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return ret;
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}
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')')
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