/*
 *
  Copyright (C) 2009-2016 Olof Hagsand and Benny Holmgren

  This file is part of CLICON.

  CLICON is free software; you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation; either version 3 of the License, or
  (at your option) any later version.

  CLICON 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 General Public License for more details.

  You should have received a copy of the GNU General Public License
  along with CLICON; see the file LICENSE.  If not, see
  <http://www.gnu.org/licenses/>.

 * Database specification parser cli syntax
 * (Cloned from cligen parser)
 */
#ifndef _CLICON_YANG_PARSE_H_
#define _CLICON_YANG_PARSE_H_

/*
 * Types
 */

struct ys_stack{
    struct ys_stack    *ys_next;
    struct yang_node   *ys_node;
};

struct clicon_yang_yacc_arg{ /* XXX: mostly unrelevant */
    clicon_handle         yy_handle;       /* cligen_handle */
    char                 *yy_name;         /* Name of syntax (for error string) */
    int                   yy_linenum;      /* Number of \n in parsed buffer */
    char                 *yy_parse_string; /* original (copy of) parse string */
    void                 *yy_lexbuf;       /* internal parse buffer from lex */
    struct ys_stack      *yy_stack;     /* Stack of levels: push/pop on () and [] */
    int                   yy_lex_state;  /* lex start condition (ESCAPE/COMMENT) */
    int                   yy_lex_string_state; /* lex start condition (STRING) */
    yang_stmt            *yy_module;       /* top-level (sub)module - return value of 
					      parser */
};

/* This is a malloced piece of code we attach to cligen objects used as db-specs.
 * So if(when) we translate cg_obj to yang_obj (or something). These are the fields
 * we should add.
 */
struct yang_userdata{
    char             *du_indexvar;  /* (clicon) This command is a list and
				       this string is the key/index of the list 
				    */
    char             *du_yang;    /* (clicon) Save yang key for cli 
				       generation */
    int               du_optional; /* (clicon) Optional element in list */
    struct cg_var    *du_default;   /* default value(clicon) */
    char              du_vector;    /* (clicon) Possibly more than one element */
};

/*
 * Variables
 */
extern char *clicon_yang_parsetext;

/*
 * Prototypes
 */
int yang_scan_init(struct clicon_yang_yacc_arg *ya);
int yang_scan_exit(struct clicon_yang_yacc_arg *ya);

int yang_parse_init(struct clicon_yang_yacc_arg *ya, yang_spec *ysp);
int yang_parse_exit(struct clicon_yang_yacc_arg *ya);

int clicon_yang_parselex(void *_ya);
int clicon_yang_parseparse(void *);
void clicon_yang_parseerror(void *_ya, char*);

int ystack_pop(struct clicon_yang_yacc_arg *ya);
struct ys_stack *ystack_push(struct clicon_yang_yacc_arg *ya, yang_node *yn);

#endif	/* _CLICON_YANG_PARSE_H_ */