nsz Git - cparser/blob - token.c

   1 /*
   2  * This file is part of cparser.
   3  * Copyright (C) 2007-2008 Matthias Braun <matze@braunis.de>
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU General Public License
   7  * as published by the Free Software Foundation; either version 2
   8  * of the License, or (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
  18  * 02111-1307, USA.
  19  */
  20 #include <config.h>
  21
  22 #include "token_t.h"
  23 #include "symbol_t.h"
  24
  25 #include <assert.h>
  26 #include <stdio.h>
  27
  28 #include "symbol.h"
  29 #include "lang_features.h"
  30 #include "adt/array.h"
  31
  32 static symbol_t *token_symbols[T_LAST_TOKEN];
  33 static symbol_t *pp_token_symbols[TP_LAST_TOKEN];
  34
  35 const source_position_t builtin_source_position = { "<built-in>", 0 };
  36
  37 void init_tokens(void)
  38 {
  39         symbol_t *symbol;
  40         int       last_id = -2;
  41
  42         memset(token_symbols, 0, T_LAST_TOKEN * sizeof(token_symbols[0]));
  43         memset(pp_token_symbols, 0, TP_LAST_TOKEN * sizeof(pp_token_symbols[0]));
  44
  45 #define T(mode,x,str,val)                                          \
  46         if (T_##x > 255) {                                             \
  47                 assert(T_##x >= last_id);                                  \
  48                 last_id = T_##x;                                           \
  49         }                                                              \
  50         if (c_mode & (mode)) {                                         \
  51                 assert(T_##x >= 0 && T_##x < T_LAST_TOKEN);                \
  52                 symbol               = symbol_table_insert(str);           \
  53                 symbol->ID           = T_##x;                              \
  54                 if (token_symbols[T_##x] == NULL)                          \
  55                         token_symbols[T_##x] = symbol;                         \
  56         }
  57
  58 #define TS(x,str,val)                                              \
  59         assert(T_##x >= 0 && T_##x < T_LAST_TOKEN);                    \
  60         symbol               = symbol_table_insert(str);               \
  61         if (token_symbols[T_##x] == NULL)                              \
  62                 token_symbols[T_##x] = symbol;                             \
  63
  64 #include "tokens.inc"
  65
  66 #undef TS
  67 #undef T
  68
  69 #define T(mode,x,str,val)                                          \
  70         assert(TP_##x >= 0 && TP_##x < TP_LAST_TOKEN);                 \
  71         symbol                   = symbol_table_insert(str);           \
  72         symbol->pp_ID            = TP_##x;                             \
  73         if (pp_token_symbols[TP_##x] == NULL)                          \
  74                 pp_token_symbols[TP_##x] = symbol;
  75
  76 #define TS(x,str,val)                                              \
  77         assert(TP_##x >= 0 && TP_##x < T_LAST_TOKEN);                  \
  78         symbol                   = symbol_table_insert(str);           \
  79         if (pp_token_symbols[TP_##x] == NULL)                          \
  80                 pp_token_symbols[TP_##x] = symbol;
  81
  82 #include "tokens_preprocessor.inc"
  83
  84 #undef T
  85 }
  86
  87 void exit_tokens(void)
  88 {
  89 }
  90
  91 void print_token_type(FILE *f, token_type_t token_type)
  92 {
  93         if(token_type == T_EOF) {
  94                 fputs("end of file", f);
  95                 return;
  96         }
  97         if(token_type == T_ERROR) {
  98                 fputs("error", f);
  99                 return;
 100         }
 101
 102         int token_symbols_len = T_LAST_TOKEN;
 103         if(token_type < 0 || token_type >= token_symbols_len) {
 104                 fputs("invalid token", f);
 105                 return;
 106         }
 107
 108         const symbol_t *symbol = token_symbols[token_type];
 109         if(symbol != NULL) {
 110                 fprintf(f, "'%s'", symbol->string);
 111         } else {
 112                 if(token_type >= 0 && token_type < 256) {
 113                         fprintf(f, "'%c'", token_type);
 114                         return;
 115                 }
 116                 fputs("unknown token", f);
 117         }
 118 }
 119
 120 void print_token(FILE *f, const token_t *token)
 121 {
 122         switch(token->type) {
 123         case T_IDENTIFIER:
 124                 fprintf(f, "symbol '%s'", token->v.symbol->string);
 125                 break;
 126         case T_INTEGER:
 127                 fprintf(f, "integer number %lld", token->v.intvalue);
 128                 break;
 129         case T_FLOATINGPOINT:
 130                 fprintf(f, "floatingpointer number %LF", token->v.floatvalue);
 131                 break;
 132         case T_STRING_LITERAL:
 133                 fprintf(f, "string '%s'", token->v.string.begin); /* TODO suboptimal */
 134                 break;
 135         default:
 136                 print_token_type(f, (token_type_t)token->type);
 137                 break;
 138         }
 139 }
 140
 141 void print_pp_token_type(FILE *f, preprocessor_token_type_t token_type)
 142 {
 143         if(token_type == TP_EOF) {
 144                 fputs("end of file", f);
 145                 return;
 146         }
 147         if(token_type == TP_ERROR) {
 148                 fputs("error", f);
 149                 return;
 150         }
 151
 152         int token_symbols_len = TP_LAST_TOKEN;
 153         if(token_type < 0 || token_type >= token_symbols_len) {
 154                 fputs("invalid token", f);
 155                 return;
 156         }
 157
 158         const symbol_t *symbol = pp_token_symbols[token_type];
 159         if(symbol != NULL) {
 160                 fprintf(f, "'%s'", symbol->string);
 161         } else {
 162                 if(token_type >= 0 && token_type < 256) {
 163                         fprintf(f, "'%c'", token_type);
 164                         return;
 165                 }
 166                 fputs("unknown token", f);
 167         }
 168 }
 169
 170 void print_pp_token(FILE *f, const token_t *token)
 171 {
 172         switch((preprocessor_token_type_t) token->type) {
 173         case TP_IDENTIFIER:
 174                 fprintf(f, "symbol '%s'", token->v.symbol->string);
 175                 break;
 176         case TP_NUMBER:
 177                 fprintf(f, "number %s", token->v.string.begin);
 178                 break;
 179         case TP_STRING_LITERAL:
 180                 fprintf(f, "string '%s'", token->v.string.begin);
 181                 break;
 182         default:
 183                 print_pp_token_type(f, (preprocessor_token_type_t) token->type);
 184                 break;
 185         }
 186 }