/*
 *
  ***** BEGIN LICENSE BLOCK *****
 
  Copyright (C) 2009-2020 Olof Hagsand

  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
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  the GNU General Public License Version 3 or later (the "GPL"),
  in which case the provisions of the GPL are applicable instead
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  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
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  the provisions above, a recipient may use your version of this file under
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  ***** END LICENSE BLOCK *****

  *
  * This file defines the internal YANG data structures used by the Clixon implementation
  * This file SHOULD ONLY be included by clixon_yang.h.
  * Accesses should be made via the API defined in clixon_yang.h
  */

#ifndef _CLIXON_YANG_INTERNAL_H_
#define _CLIXON_YANG_INTERNAL_H_

/*! Yang type cache. Yang type statements can cache all typedef info here
 * @note unions not cached
*/
struct yang_type_cache{
    int        yc_options;  /* See YANG_OPTIONS_* that determines pattern/
			       fraction fields. */
    cvec      *yc_cvv;      /* Range and length restriction. (if YANG_OPTION_
                               LENGTH|RANGE. Can be a vector if multiple 
                               ranges*/
    cvec      *yc_patterns; /* list of regexp, if cvec_len() > 0 */
    int        yc_rxmode; /* need to store mode for freeing since handle may not be available */
    cvec      *yc_regexps;  /* list of _compiled_ regexp, if cvec_len() > 0 */
    uint8_t    yc_fraction; /* Fraction digits for decimal64 (if 
                               YANG_OPTIONS_FRACTION_DIGITS */
    yang_stmt *yc_resolved; /* Resolved type object, can be NULL - note direct ptr */
};
typedef struct yang_type_cache yang_type_cache;

/*! yang statement 
 */
struct yang_stmt{
    int                ys_len;       /* Number of children */
    struct yang_stmt **ys_stmt;      /* Vector of children statement pointers */
    struct yang_stmt  *ys_parent;    /* Backpointer to parent: yang-stmt or yang-spec */
    enum rfc_6020      ys_keyword;   /* See clicon_yang_parse.tab.h */

    char              *ys_argument;  /* String / argument depending on keyword */   
    uint16_t           ys_flags;     /* Flags according to YANG_FLAG_MARK and others */
    yang_stmt         *ys_mymodule;  /* Shortcut to "my" module. Augmented
					nodes can belong to other 
					modules than the ancestor module */
    cg_var            *ys_cv;        /* cligen variable. See ys_populate()
					Following stmts have cv:s:
				        leaf: for default value
					leaf-list, 
					config: boolean true or false
					mandatory: boolean true or false
					fraction-digits for fraction-digits
					unknown-stmt (optional argument)
				     */
    cvec              *ys_cvec;      /* List of stmt-specific variables 
					Y_RANGE: range_min, range_max 
					Y_LIST: vector of keys
					Y_TYPE & identity: store all derived 
					   types as <module>:<id> list
				     */
    yang_type_cache   *ys_typecache; /* If ys_keyword==Y_TYPE, cache all typedef data except unions */
    char              *ys_when_xpath; /* Special conditional for a "when"-associated augment xpath */
    cvec              *ys_when_nsc;   /* Special conditional for a "when"-associated augment namespace ctx */
    int               _ys_vector_i;   /* internal use: yn_each */

};


#endif  /* _CLIXON_YANG_INTERNAL_H_ */