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
  24 #include <assert.h>
  25 #include <stdio.h>
  26
  27 #include "symbol.h"
  28 #include "lang_features.h"
  29 #include "adt/array.h"
  30
  31 static symbol_t *token_symbols[T_LAST_TOKEN];
  32
  33 source_position_t builtin_source_position = { "<built-in>", 0 };
  34
  35 void init_tokens(void)
  36 {
  37         symbol_t *symbol;
  38         int       last_id = -2;
  39
  40         memset(token_symbols, 0, T_LAST_TOKEN * sizeof(token_symbols[0]));
  41
  42 #define T(mode,x,str,val)                                          \
  43         if (T_##x > 255) {                                             \
  44                 assert(T_##x >= last_id);                                  \
  45                 last_id = T_##x;                                           \
  46         }                                                              \
  47         if (c_mode & (mode)) {                                         \
  48                 assert(T_##x >= 0 && T_##x < T_LAST_TOKEN);                \
  49                 symbol               = symbol_table_insert(str);           \
  50                 symbol->ID           = T_##x;                              \
  51                 token_symbols[T_##x] = symbol;                             \
  52         }
  53
  54 #define TS(x,str,val)                                              \
  55         assert(T_##x >= 0 && T_##x < T_LAST_TOKEN);                    \
  56         symbol               = symbol_table_insert(str);               \
  57         token_symbols[T_##x] = symbol;
  58
  59 #include "tokens.inc"
  60
  61 #undef TS
  62 #undef T
  63
  64 #define T(mode,x,str,val)                                          \
  65         assert(TP_##x >= 0 && TP_##x < TP_LAST_TOKEN);                 \
  66         symbol               = symbol_table_insert(str);               \
  67         symbol->pp_ID        = TP_##x;
  68
  69 #include "tokens_preprocessor.inc"
  70
  71 #undef T
  72 }
  73
  74 void exit_tokens(void)
  75 {
  76 }
  77
  78 void print_token_type(FILE *f, token_type_t token_type)
  79 {
  80         if(token_type == T_EOF) {
  81                 fputs("end of file", f);
  82                 return;
  83         }
  84         if(token_type == T_ERROR) {
  85                 fputs("error", f);
  86                 return;
  87         }
  88
  89         int token_symbols_len = T_LAST_TOKEN;
  90         if(token_type < 0 || token_type >= token_symbols_len) {
  91                 fputs("invalid token", f);
  92                 return;
  93         }
  94
  95         const symbol_t *symbol = token_symbols[token_type];
  96         if(symbol != NULL) {
  97                 fprintf(f, "'%s'", symbol->string);
  98         } else {
  99                 if(token_type >= 0 && token_type < 256) {
 100                         fprintf(f, "'%c'", token_type);
 101                         return;
 102                 }
 103                 fputs("unknown token", f);
 104         }
 105 }
 106
 107 void print_token(FILE *f, const token_t *token)
 108 {
 109         switch(token->type) {
 110         case T_IDENTIFIER:
 111                 fprintf(f, "symbol '%s'", token->v.symbol->string);
 112                 break;
 113         case T_INTEGER:
 114                 fprintf(f, "integer number %lld", token->v.intvalue);
 115                 break;
 116         case T_FLOATINGPOINT:
 117                 fprintf(f, "floatingpointer number %LF", token->v.floatvalue);
 118                 break;
 119         case T_STRING_LITERAL:
 120                 fprintf(f, "string '%s'", token->v.string.begin); /* TODO suboptimal */
 121                 break;
 122         default:
 123                 print_token_type(f, (token_type_t)token->type);
 124                 break;
 125         }
 126 }