lib/asn1/symbol.h

   1 /*
   2  * Copyright (c) 1997 - 2005 Kungliga Tekniska Högskolan
   3  * (Royal Institute of Technology, Stockholm, Sweden).
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  *
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  *
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  *
  17  * 3. Neither the name of the Institute nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  */
  33
  34 /* $Id$ */
  35
  36 #ifndef _SYMBOL_H
  37 #define _SYMBOL_H
  38
  39 #include "asn1_queue.h"
  40
  41 enum typetype {
  42     TBitString,
  43     TBoolean,
  44     TChoice,
  45     TEnumerated,
  46     TGeneralString,
  47     TTeletexString,
  48     TGeneralizedTime,
  49     TIA5String,
  50     TInteger,
  51     TNull,
  52     TOID,
  53     TOctetString,
  54     TPrintableString,
  55     TSequence,
  56     TSequenceOf,
  57     TSet,
  58     TSetOf,
  59     TTag,
  60     TType,
  61     TUTCTime,
  62     TUTF8String,
  63     TBMPString,
  64     TUniversalString,
  65     TVisibleString
  66 };
  67
  68 typedef enum typetype Typetype;
  69
  70 struct type;
  71
  72 struct value {
  73     enum { booleanvalue,
  74            nullvalue,
  75            integervalue,
  76            stringvalue,
  77            objectidentifiervalue
  78     } type;
  79     union {
  80         int booleanvalue;
  81         int64_t integervalue;
  82         char *stringvalue;
  83         struct objid *objectidentifiervalue;
  84     } u;
  85 };
  86
  87 struct member {
  88     char *name;
  89     char *gen_name;
  90     char *label;
  91     int val;
  92     int optional;
  93     int ellipsis;
  94     struct type *type;
  95     ASN1_TAILQ_ENTRY(member) members;
  96     struct value *defval;
  97 };
  98
  99 typedef struct member Member;
 100
 101 ASN1_TAILQ_HEAD(memhead, member);
 102
 103 struct symbol;
 104
 105 struct tagtype {
 106     int tagclass;
 107     int tagvalue;
 108     enum { TE_IMPLICIT, TE_EXPLICIT } tagenv;
 109 };
 110
 111 struct range {
 112     /*
 113      * We can't represent unsigned 64-bit ranges because max might be
 114      * negative...
 115      */
 116     int64_t min;
 117     int64_t max;
 118 };
 119
 120 enum ctype { CT_CONTENTS, CT_USER } ;
 121
 122 struct constraint_spec;
 123
 124 struct type {
 125     Typetype type;
 126     struct memhead *members;
 127     struct symbol *symbol;
 128     struct type *subtype;
 129     struct tagtype tag;
 130     struct range *range;
 131     struct constraint_spec *constraint;
 132     unsigned long id;
 133 };
 134
 135 typedef struct type Type;
 136
 137 struct constraint_spec {
 138     enum ctype ctype;
 139     union {
 140         struct {
 141             Type *type;
 142             struct value *encoding;
 143         } content;
 144     } u;
 145 };
 146
 147 struct objid {
 148     const char *label;
 149     int value;
 150     struct objid *next;
 151 };
 152
 153 struct symbol {
 154     char *name;
 155     char *gen_name;
 156     enum { SUndefined, SValue, Stype } stype;
 157     struct value *value;
 158     Type *type;
 159 };
 160
 161 typedef struct symbol Symbol;
 162
 163 void initsym (void);
 164 Symbol *addsym (char *);
 165 void output_name (char *);
 166 int checkundefined(void);
 167 #endif