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ca81887599
Now evaluating a condition will rely on an expression (or an empty string),
and this expression will support ORing a sub-expression with another
optional expression. The sub-expressions ANDs a term with another optional
sub-expression. With this alone precedence between && and || is respected,
and the following expression:
A && B && C || D || E && F || G
will naturally evaluate as:
(A && B && C) || D || (E && F) || G
44 lines
1.7 KiB
C
44 lines
1.7 KiB
C
/*
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* include/haproxy/cfgcond.h
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* Configuration condition preprocessor
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*
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* Copyright (C) 2000-2021 Willy Tarreau - w@1wt.eu
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation, version 2.1
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* exclusively.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef _HAPROXY_CFGCOND_H
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#define _HAPROXY_CFGCOND_H
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#include <haproxy/api.h>
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#include <haproxy/cfgcond-t.h>
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const struct cond_pred_kw *cfg_lookup_cond_pred(const char *str);
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int cfg_parse_cond_term(const char **text, struct cfg_cond_term **term, char **err, const char **errptr);
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int cfg_eval_cond_term(const struct cfg_cond_term *term, char **err);
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void cfg_free_cond_term(struct cfg_cond_term **term);
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int cfg_parse_cond_and(const char **text, struct cfg_cond_and **expr, char **err, const char **errptr);
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int cfg_eval_cond_and(struct cfg_cond_and *expr, char **err);
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void cfg_free_cond_and(struct cfg_cond_and **expr);
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int cfg_parse_cond_expr(const char **text, struct cfg_cond_expr **expr, char **err, const char **errptr);
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int cfg_eval_cond_expr(struct cfg_cond_expr *expr, char **err);
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void cfg_free_cond_expr(struct cfg_cond_expr **expr);
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int cfg_eval_condition(char **args, char **err, const char **errptr);
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#endif
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