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 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                 token_symbols[T_##x] = symbol;                             \
  55         }
  56
  57 #define TS(x,str,val)                                              \
  58         assert(T_##x >= 0 && T_##x < T_LAST_TOKEN);                    \
  59         symbol               = symbol_table_insert(str);               \
  60         token_symbols[T_##x] = symbol;
  61
  62 #include "tokens.inc"
  63
  64 #undef TS
  65 #undef T
  66
  67 #define T(mode,x,str,val)                                          \
  68         assert(TP_##x >= 0 && TP_##x < TP_LAST_TOKEN);                 \
  69         symbol                   = symbol_table_insert(str);           \
  70         symbol->pp_ID            = TP_##x;                             \
  71         pp_token_symbols[TP_##x] = symbol;
  72
  73 #define TS(x,str,val)                                              \
  74         assert(TP_##x >= 0 && TP_##x < T_LAST_TOKEN);                  \
  75         symbol                   = symbol_table_insert(str);           \
  76         pp_token_symbols[TP_##x] = symbol;
  77
  78 #include "tokens_preprocessor.inc"
  79
  80 #undef T
  81 }
  82
  83 void exit_tokens(void)
  84 {
  85 }
  86
  87 void print_token_type(FILE *f, token_type_t token_type)
  88 {
  89         if(token_type == T_EOF) {
  90                 fputs("end of file", f);
  91                 return;
  92         }
  93         if(token_type == T_ERROR) {
  94                 fputs("error", f);
  95                 return;
  96         }
  97
  98         int token_symbols_len = T_LAST_TOKEN;
  99         if(token_type < 0 || token_type >= token_symbols_len) {
 100                 fputs("invalid token", f);
 101                 return;
 102         }
 103
 104         const symbol_t *symbol = token_symbols[token_type];
 105         if(symbol != NULL) {
 106                 fprintf(f, "'%s'", symbol->string);
 107         } else {
 108                 if(token_type >= 0 && token_type < 256) {
 109                         fprintf(f, "'%c'", token_type);
 110                         return;
 111                 }
 112                 fputs("unknown token", f);
 113         }
 114 }
 115
 116 void print_token(FILE *f, const token_t *token)
 117 {
 118         switch(token->type) {
 119         case T_IDENTIFIER:
 120                 fprintf(f, "symbol '%s'", token->v.symbol->string);
 121                 break;
 122         case T_INTEGER:
 123                 fprintf(f, "integer number %lld", token->v.intvalue);
 124                 break;
 125         case T_FLOATINGPOINT:
 126                 fprintf(f, "floatingpointer number %LF", token->v.floatvalue);
 127                 break;
 128         case T_STRING_LITERAL:
 129                 fprintf(f, "string '%s'", token->v.string.begin); /* TODO suboptimal */
 130                 break;
 131         default:
 132                 print_token_type(f, (token_type_t)token->type);
 133                 break;
 134         }
 135 }
 136
 137 void print_pp_token_type(FILE *f, preprocessor_token_type_t token_type)
 138 {
 139         if(token_type == TP_EOF) {
 140                 fputs("end of file", f);
 141                 return;
 142         }
 143         if(token_type == TP_ERROR) {
 144                 fputs("error", f);
 145                 return;
 146         }
 147
 148         int token_symbols_len = TP_LAST_TOKEN;
 149         if(token_type < 0 || token_type >= token_symbols_len) {
 150                 fputs("invalid token", f);
 151                 return;
 152         }
 153
 154         const symbol_t *symbol = pp_token_symbols[token_type];
 155         if(symbol != NULL) {
 156                 fprintf(f, "'%s'", symbol->string);
 157         } else {
 158                 if(token_type >= 0 && token_type < 256) {
 159                         fprintf(f, "'%c'", token_type);
 160                         return;
 161                 }
 162                 fputs("unknown token", f);
 163         }
 164 }
 165
 166 void print_pp_token(FILE *f, const token_t *token)
 167 {
 168         switch((preprocessor_token_type_t) token->type) {
 169         case TP_IDENTIFIER:
 170                 fprintf(f, "symbol '%s'", token->v.symbol->string);
 171                 break;
 172         case TP_NUMBER:
 173                 fprintf(f, "number %s", token->v.string.begin);
 174                 break;
 175         case TP_STRING_LITERAL:
 176                 fprintf(f, "string '%s'", token->v.string.begin);
 177                 break;
 178         default:
 179                 print_pp_token_type(f, (preprocessor_token_type_t) token->type);
 180                 break;
 181         }
 182 }