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         if (c_mode & (mode)) {                                         \
  71                 assert(TP_##x >= 0 && TP_##x < TP_LAST_TOKEN);             \
  72                 symbol                   = symbol_table_insert(str);       \
  73                 symbol->pp_ID            = TP_##x;                         \
  74                 if (pp_token_symbols[TP_##x] == NULL)                      \
  75                         pp_token_symbols[TP_##x] = symbol;                     \
  76         }
  77
  78 #define TS(x,str,val)                                              \
  79         assert(TP_##x >= 0 && TP_##x < T_LAST_TOKEN);                  \
  80         symbol                   = symbol_table_insert(str);           \
  81         if (pp_token_symbols[TP_##x] == NULL)                          \
  82                 pp_token_symbols[TP_##x] = symbol;
  83
  84 #include "tokens_preprocessor.inc"
  85
  86 #undef T
  87 }
  88
  89 void exit_tokens(void)
  90 {
  91 }
  92
  93 void print_token_type(FILE *f, token_type_t token_type)
  94 {
  95         if(token_type == T_EOF) {
  96                 fputs("end of file", f);
  97                 return;
  98         }
  99         if(token_type == T_ERROR) {
 100                 fputs("error", f);
 101                 return;
 102         }
 103
 104         int token_symbols_len = T_LAST_TOKEN;
 105         if(token_type < 0 || token_type >= token_symbols_len) {
 106                 fputs("invalid token", f);
 107                 return;
 108         }
 109
 110         const symbol_t *symbol = token_symbols[token_type];
 111         if(symbol != NULL) {
 112                 fputs(symbol->string, f);
 113         } else {
 114                 if(token_type >= 0 && token_type < 256) {
 115                         fputc(token_type, f);
 116                         return;
 117                 }
 118                 fputs("unknown token", f);
 119         }
 120 }
 121
 122 void print_token(FILE *f, const token_t *token)
 123 {
 124         switch(token->type) {
 125         case T_IDENTIFIER:
 126                 fprintf(f, "identifier '%s'", token->v.symbol->string);
 127                 break;
 128         case T_INTEGER:
 129                 fprintf(f, "integer number '%lld'", token->v.intvalue);
 130                 break;
 131         case T_FLOATINGPOINT:
 132                 fprintf(f, "floating-point number '%LF'", token->v.floatvalue);
 133                 break;
 134         case T_STRING_LITERAL:
 135                 fprintf(f, "string \"%s\"", token->v.string.begin);
 136                 break;
 137         default:
 138                 fputc('\'', f);
 139                 print_token_type(f, (token_type_t)token->type);
 140                 fputc('\'', f);
 141                 break;
 142         }
 143 }
 144
 145 void print_pp_token_type(FILE *f, int token_type)
 146 {
 147         if (token_type == TP_EOF) {
 148                 fputs("end of file", f);
 149                 return;
 150         }
 151         if (token_type == TP_ERROR) {
 152                 fputs("error", f);
 153                 return;
 154         }
 155
 156         int token_symbols_len = TP_LAST_TOKEN;
 157         if (token_type < 0 || token_type >= token_symbols_len) {
 158                 fputs("invalid token", f);
 159                 return;
 160         }
 161
 162         const symbol_t *symbol = pp_token_symbols[token_type];
 163         if (symbol != NULL) {
 164                 fputs(symbol->string, f);
 165         } else {
 166                 if(token_type >= 0 && token_type < 256) {
 167                         fputc(token_type, f);
 168                         return;
 169                 }
 170                 fputs("unknown token", f);
 171         }
 172 }
 173
 174 void print_pp_token(FILE *f, const token_t *token)
 175 {
 176         switch((preprocessor_token_type_t) token->type) {
 177         case TP_IDENTIFIER:
 178                 fprintf(f, "identifier '%s'", token->v.symbol->string);
 179                 break;
 180         case TP_NUMBER:
 181                 fprintf(f, "number '%s'", token->v.string.begin);
 182                 break;
 183         case TP_STRING_LITERAL:
 184                 fprintf(f, "string \"%s\"", token->v.string.begin);
 185                 break;
 186         default:
 187                 print_pp_token_type(f, (preprocessor_token_type_t) token->type);
 188                 break;
 189         }
 190 }