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/* A GNU-like <search.h>.
Copyright (C) 2007-2021 Free Software Foundation, Inc.
This file is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
This file is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
#ifndef _@GUARD_PREFIX@_SEARCH_H
#if __GNUC__ >= 3
@PRAGMA_SYSTEM_HEADER@
#endif
@PRAGMA_COLUMNS@
/* The include_next requires a split double-inclusion guard. */
#if @HAVE_SEARCH_H@
# @INCLUDE_NEXT@ @NEXT_SEARCH_H@
#endif
#ifndef _@GUARD_PREFIX@_SEARCH_H
#define _@GUARD_PREFIX@_SEARCH_H
/* The definitions of _GL_FUNCDECL_RPL etc. are copied here. */
/* The definition of _GL_ARG_NONNULL is copied here. */
/* The definition of _GL_WARN_ON_USE is copied here. */
#if @GNULIB_MDA_LFIND@
/* On native Windows, map 'lfind' to '_lfind', so that -loldnames is not
required. In C++ with GNULIB_NAMESPACE, avoid differences between
platforms by defining GNULIB_NAMESPACE::lfind always. */
# if defined _WIN32 && !defined __CYGWIN__
# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
# undef lfind
# define lfind _lfind
# endif
_GL_CXXALIAS_MDA (lfind, void *,
(const void *key, const void *base, unsigned int *nmemb,
unsigned int size,
int (*compar) (const void *, const void *)));
# else
_GL_CXXALIAS_SYS (lfind, void *,
(const void *key, const void *base, size_t *nmemb,
size_t size,
int (*compar) (const void *, const void *)));
# endif
_GL_CXXALIASWARN (lfind);
#endif
#if @GNULIB_MDA_LSEARCH@
/* On native Windows, map 'lsearch' to '_lsearch', so that -loldnames is not
required. In C++ with GNULIB_NAMESPACE, avoid differences between
platforms by defining GNULIB_NAMESPACE::lsearch always. */
# if defined _WIN32 && !defined __CYGWIN__
# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
# undef lsearch
# define lsearch _lsearch
# endif
_GL_CXXALIAS_MDA (lsearch, void *,
(const void *key, void *base, unsigned int *nmemb,
unsigned int size,
int (*compar) (const void *, const void *)));
# else
_GL_CXXALIAS_SYS (lsearch, void *,
(const void *key, void *base, size_t *nmemb,
size_t size,
int (*compar) (const void *, const void *)));
# endif
_GL_CXXALIASWARN (lsearch);
#endif
#if @GNULIB_TSEARCH@
# if @REPLACE_TSEARCH@
# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
# define tsearch rpl_tsearch
# define tfind rpl_tfind
# define tdelete rpl_tdelete
# define twalk rpl_twalk
# endif
# endif
/* See <https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/search.h.html>
<https://pubs.opengroup.org/onlinepubs/9699919799/functions/tsearch.html>
for details. */
# if !@HAVE_TYPE_VISIT@
# if !GNULIB_defined_search_types
typedef enum
{
preorder,
postorder,
endorder,
leaf
}
VISIT;
# define GNULIB_defined_search_types 1
# endif
# endif
# ifdef __cplusplus
extern "C" {
# endif
# if !GNULIB_defined_search_fn_types
typedef int (*_gl_search_compar_fn) (const void *, const void *);
typedef void (*_gl_search_action_fn) (const void *, VISIT, int);
# define GNULIB_defined_search_fn_types 1
# endif
# ifdef __cplusplus
}
# endif
/* Searches an element in the tree *VROOTP that compares equal to KEY.
If one is found, it is returned. Otherwise, a new element equal to KEY
is inserted in the tree and is returned. */
# if @REPLACE_TSEARCH@
_GL_FUNCDECL_RPL (tsearch, void *,
(const void *key, void **vrootp,
_gl_search_compar_fn compar)
_GL_ARG_NONNULL ((1, 2, 3)));
_GL_CXXALIAS_RPL (tsearch, void *,
(const void *key, void **vrootp,
_gl_search_compar_fn compar));
# else
# if !@HAVE_TSEARCH@
_GL_FUNCDECL_SYS (tsearch, void *,
(const void *key, void **vrootp,
_gl_search_compar_fn compar)
_GL_ARG_NONNULL ((1, 2, 3)));
# endif
_GL_CXXALIAS_SYS (tsearch, void *,
(const void *key, void **vrootp,
_gl_search_compar_fn compar));
# endif
_GL_CXXALIASWARN (tsearch);
/* Searches an element in the tree *VROOTP that compares equal to KEY.
If one is found, it is returned. Otherwise, NULL is returned. */
# if @REPLACE_TSEARCH@
_GL_FUNCDECL_RPL (tfind, void *,
(const void *key, void *const *vrootp,
_gl_search_compar_fn compar)
_GL_ARG_NONNULL ((1, 2, 3)));
_GL_CXXALIAS_RPL (tfind, void *,
(const void *key, void *const *vrootp,
_gl_search_compar_fn compar));
# else
# if !@HAVE_TSEARCH@
_GL_FUNCDECL_SYS (tfind, void *,
(const void *key, void *const *vrootp,
_gl_search_compar_fn compar)
_GL_ARG_NONNULL ((1, 2, 3)));
# endif
/* Need to cast, because on Cygwin 1.5.x systems, the second parameter is
void **vrootp. */
_GL_CXXALIAS_SYS_CAST (tfind, void *,
(const void *key, void *const *vrootp,
_gl_search_compar_fn compar));
# endif
_GL_CXXALIASWARN (tfind);
/* Searches an element in the tree *VROOTP that compares equal to KEY.
If one is found, it is removed from the tree, and its parent node is
returned. Otherwise, NULL is returned. */
# if @REPLACE_TSEARCH@
_GL_FUNCDECL_RPL (tdelete, void *,
(const void *restrict key, void **restrict vrootp,
_gl_search_compar_fn compar)
_GL_ARG_NONNULL ((1, 2, 3)));
_GL_CXXALIAS_RPL (tdelete, void *,
(const void *restrict key, void **restrict vrootp,
_gl_search_compar_fn compar));
# else
# if !@HAVE_TSEARCH@
_GL_FUNCDECL_SYS (tdelete, void *,
(const void *restrict key, void **restrict vrootp,
_gl_search_compar_fn compar)
_GL_ARG_NONNULL ((1, 2, 3)));
# endif
_GL_CXXALIAS_SYS (tdelete, void *,
(const void *restrict key, void **restrict vrootp,
_gl_search_compar_fn compar));
# endif
_GL_CXXALIASWARN (tdelete);
/* Perform a depth-first, left-to-right traversal of the tree VROOT.
The ACTION function is called:
- for non-leaf nodes: 3 times, before the left subtree traversal,
after the left subtree traversal but before the right subtree traversal,
and after the right subtree traversal,
- for leaf nodes: once.
The arguments passed to ACTION are:
1. the node; it can be cast to a 'const void * const *', i.e. into a
pointer to the key,
2. an indicator which visit of the node this is,
3. the level of the node in the tree (0 for the root). */
# if @REPLACE_TSEARCH@
_GL_FUNCDECL_RPL (twalk, void,
(const void *vroot, _gl_search_action_fn action)
_GL_ARG_NONNULL ((2)));
_GL_CXXALIAS_RPL (twalk, void,
(const void *vroot, _gl_search_action_fn action));
# else
# if !@HAVE_TWALK@
_GL_FUNCDECL_SYS (twalk, void,
(const void *vroot, _gl_search_action_fn action)
_GL_ARG_NONNULL ((2)));
# endif
_GL_CXXALIAS_SYS (twalk, void,
(const void *vroot, _gl_search_action_fn action));
# endif
_GL_CXXALIASWARN (twalk);
/* Flags used by tsearch.c. */
# define GNULIB_defined_tsearch (@REPLACE_TSEARCH@ || !@HAVE_TSEARCH@)
# define GNULIB_defined_twalk (@REPLACE_TSEARCH@ || !@HAVE_TWALK@)
#elif defined GNULIB_POSIXCHECK
# undef tsearch
# if HAVE_RAW_DECL_TSEARCH
_GL_WARN_ON_USE (tsearch, "tsearch is unportable - "
"use gnulib module tsearch for portability");
# endif
# undef tfind
# if HAVE_RAW_DECL_TFIND
_GL_WARN_ON_USE (tfind, "tfind is unportable - "
"use gnulib module tsearch for portability");
# endif
# undef tdelete
# if HAVE_RAW_DECL_TDELETE
_GL_WARN_ON_USE (tdelete, "tdelete is unportable - "
"use gnulib module tsearch for portability");
# endif
# undef twalk
# if HAVE_RAW_DECL_TWALK
_GL_WARN_ON_USE (twalk, "twalk is unportable - "
"use gnulib module tsearch for portability");
# endif
#endif
#endif /* _@GUARD_PREFIX@_SEARCH_H */
#endif /* _@GUARD_PREFIX@_SEARCH_H */
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