added instance_id parse files
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Olof hagsand
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3 changed files with 606 additions and 0 deletions
157
lib/src/clixon_instance_id_parse.l
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157
lib/src/clixon_instance_id_parse.l
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/*
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*
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***** BEGIN LICENSE BLOCK *****
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Copyright (C) 2009-2020 Olof Hagsand
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This file is part of CLIXON.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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Alternatively, the contents of this file may be used under the terms of
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the GNU General Public License Version 3 or later (the "GPL"),
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in which case the provisions of the GPL are applicable instead
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of those above. If you wish to allow use of your version of this file only
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under the terms of the GPL, and not to allow others to
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use your version of this file under the terms of Apache License version 2,
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indicate your decision by deleting the provisions above and replace them with
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the notice and other provisions required by the GPL. If you do not delete
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the provisions above, a recipient may use your version of this file under
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the terms of any one of the Apache License version 2 or the GPL.
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***** END LICENSE BLOCK *****
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*
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* "instance-id" is a subset of XPath and defined in RF7950 Sections 9.13 and 14.
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* BNF:
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* instance-identifier = ("/" (node-identifier [key-predicate+ | leaf-list-predicate | pos]))+
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* key-predicate = "[" key-predicate-expr "]"
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* key-predicate-expr = node-identifier "=" quoted-string
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* leaf-list-predicate = "[" leaf-list-predicate-expr "]"
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* leaf-list-predicate-expr = "." "=" quoted-string
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* pos = "[" positive-integer-value "]"
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* node-identifier = [prefix ":"] identifier
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* quoted-string = (DQUOTE string DQUOTE) / (SQUOTE string SQUOTE)
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* positive-integer-value = (non-zero-digit DIGIT*)
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* prefix = identifier
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* identifier = (ALPHA | "_")(ALPHA | DIGIT | "_" | "-" | ".")*
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*/
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%{
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#include "clixon_config.h"
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#include <stdio.h>
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#include <string.h>
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#include <stdint.h>
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#include <errno.h>
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#include "clixon_instance_id_parse.tab.h" /* generated */
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#include <cligen/cligen.h>
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#include "clixon_queue.h"
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#include "clixon_hash.h"
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#include "clixon_handle.h"
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#include "clixon_yang.h"
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#include "clixon_log.h"
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#include "clixon_string.h"
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#include "clixon_xml.h"
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#include "clixon_path.h"
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#include "clixon_instance_id_parse.h"
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/* Redefine main lex function so that you can send arguments to it: _yy is added to arg list */
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#define YY_DECL int clixon_instance_id_parselex(void *_iy)
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/* Dont use input function (use user-buffer) */
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#define YY_NO_INPUT
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/* typecast macro */
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#define _IY ((struct clicon_instance_id_yacc_arg *)_iy)
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#define MAXBUF 4*4*64*1024
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#undef clixon_instance_id_parsewrap
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int
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clixon_instance_id_parsewrap(void)
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{
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return 1;
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}
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%}
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namestart [A-Z_a-z]
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namechar [A-Z_a-z\-\.0-9]
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identifier {namestart}{namechar}*
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uint [1-9][0-9]*
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%x INIT
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%s STRDQ
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%s STRSQ
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%%
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<INIT,STRDQ,STRSQ>[ \t]
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<INIT,STRDQ,STRSQ>\n { _IY->iy_linenum++; }
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<INIT,STRDQ,STRSQ>\r
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<INIT,STRDQ,STRSQ><<EOF>> { return X_EOF; }
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<INIT>\/ { return SLASH;}
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<INIT>\[ { return LSQBR;}
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<INIT>\] { return RSQBR;}
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<INIT>\= { return EQUAL; }
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<INIT>\: { return COLON; }
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<INIT>\. { return DOT; }
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<INIT>\" { _IY->iy_lex_state=INIT;BEGIN(STRDQ); return DQUOTE; }
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<INIT>\' { _IY->iy_lex_state=INIT;BEGIN(STRSQ); return SQUOTE; }
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<INIT>{identifier} { clixon_instance_id_parselval.string = strdup(yytext);
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return IDENTIFIER; }
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<INIT>{uint} { clixon_instance_id_parselval.string = strdup(yytext);
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return UINT; }
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<INIT>. { clixon_instance_id_parseerror(_IY, "LEXICAL ERROR\n"); return -1; }
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<STRDQ>[^\"]+ { clixon_instance_id_parselval.string = strdup(yytext); return STRING; }
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<STRDQ>\" { BEGIN(_IY->iy_lex_state); return DQUOTE; }
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<STRSQ>[^\']+ { clixon_instance_id_parselval.string = strdup(yytext); return STRING; }
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<STRSQ>\' { BEGIN(_IY->iy_lex_state); return SQUOTE; }
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%%
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/*! Initialize scanner.
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*/
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int
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instance_id_scan_init(struct clicon_instance_id_yacc_arg *iy)
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{
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BEGIN(INIT);
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iy->iy_lexbuf = yy_scan_string(iy->iy_parse_string);
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#if 1 /* XXX: just to use unput to avoid warning */
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if (0)
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yyunput(0, "");
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#endif
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return 0;
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}
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/*
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* free buffers
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* Even within Flex version 2.5 (this is assumed), freeing buffers is different.
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*/
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int
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instance_id_scan_exit(struct clicon_instance_id_yacc_arg *iy)
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{
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yy_delete_buffer(iy->iy_lexbuf);
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clixon_instance_id_parselex_destroy(); /* modern */
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return 0;
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}
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