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* Full RFC 7950 if-feature-expr support (Section 7.20.2)

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* Previous implementation did not handle nested if-feature expressions
  * As part of fixing: [YANG if-feature does not support nested boolean expression](https://github.com/clicon/clixon/issues/341)
  * Added new yacc/lex parser for if-feature-expr string
This commit is contained in:
Olof hagsand 2022-06-26 10:56:03 +02:00
parent 5bb3767358
commit a00e36caa2
11 changed files with 484 additions and 155 deletions
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66
lib/src/clixon_if_feature_parse.h Normal file
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/*
*
***** BEGIN LICENSE BLOCK *****
Copyright (C) 2022 Olof Hagsand and Rubicon Communications, LLC(Netgate)
This file is part of CLIXON.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
Alternatively, the contents of this file may be used under the terms of
the GNU General Public License Version 3 or later (the "GPL"),
in which case the provisions of the GPL are applicable instead
of those above. If you wish to allow use of your version of this file only
under the terms of the GPL, and not to allow others to
use your version of this file under the terms of Apache License version 2,
indicate your decision by deleting the provisions above and replace them with
the notice and other provisions required by the GPL. If you do not delete
the provisions above, a recipient may use your version of this file under
the terms of any one of the Apache License version 2 or the GPL.
***** END LICENSE BLOCK *****
* if-feature-expr RFC7950 14
*/
#ifndef _CLIXON_IF_FEATURE_PARSE_H_
#define _CLIXON_IF_FEATURE_PARSE_H_
/*
* Types
*/
/*! XML parser yacc handler struct */
struct clixon_if_feature_parse_yacc {
char *if_parse_string; /* original (copy of) parse string */
int if_linenum; /* Number of \n in parsed buffer */
void *if_lexbuf; /* Internal parse buffer from lex */
yang_stmt *if_ys; /* Yang statement, NULL if no check */
int if_enabled; /* Result: 0: feature disabled, 1: enabled */
};
typedef struct clixon_if_feature_parse_yacc clixon_if_feature_yacc;
/*
* Variables
*/
extern char *clixon_if_feature_parsetext;
/*
* Prototypes
*/
int clixon_if_feature_parsel_init(clixon_if_feature_yacc *ya);
int clixon_if_feature_parsel_exit(clixon_if_feature_yacc *ya);
int clixon_if_feature_parsel_linenr(void);
int clixon_if_feature_parselex(void *);
int clixon_if_feature_parseparse(void *);
#endif /* _CLIXON_IF_FEATURE_PARSE_H_ */