nsz Git - cparser/blob - token.c

   1 #include <config.h>
   2
   3 #include "token_t.h"
   4
   5 #include <assert.h>
   6 #include <stdio.h>
   7
   8 #include "symbol.h"
   9 #include "lang_features.h"
  10 #include "adt/array.h"
  11
  12 static symbol_t *token_symbols[T_LAST_TOKEN];
  13
  14 source_position_t builtin_source_position = { "<built-in>", 0 };
  15
  16 void init_tokens(void)
  17 {
  18         symbol_t *symbol;
  19
  20         memset(token_symbols, 0, T_LAST_TOKEN * sizeof(token_symbols[0]));
  21
  22 #define T(mode,x,str,val)                                          \
  23         if (c_mode & (mode)) {                                         \
  24                 assert(T_##x >= 0 && T_##x < T_LAST_TOKEN);                \
  25                 symbol               = symbol_table_insert(str);           \
  26                 symbol->ID           = T_##x;                              \
  27                 token_symbols[T_##x] = symbol;                             \
  28         }
  29
  30 #define TS(x,str,val)                                              \
  31         assert(T_##x >= 0 && T_##x < T_LAST_TOKEN);                    \
  32         symbol               = symbol_table_insert(str);               \
  33         token_symbols[T_##x] = symbol;
  34
  35 #include "tokens.inc"
  36
  37 #undef TS
  38 #undef T
  39
  40 #define T(mode,x,str,val)                                          \
  41         assert(TP_##x >= 0 && TP_##x < TP_LAST_TOKEN);                 \
  42         symbol               = symbol_table_insert(str);               \
  43         symbol->pp_ID        = TP_##x;
  44
  45 #include "tokens_preprocessor.inc"
  46
  47 #undef T
  48 }
  49
  50 void exit_tokens(void)
  51 {
  52 }
  53
  54 void print_token_type(FILE *f, token_type_t token_type)
  55 {
  56         if(token_type == T_EOF) {
  57                 fputs("end of file", f);
  58                 return;
  59         }
  60         if(token_type == T_ERROR) {
  61                 fputs("error", f);
  62                 return;
  63         }
  64
  65         int token_symbols_len = T_LAST_TOKEN;
  66         if(token_type < 0 || token_type >= token_symbols_len) {
  67                 fputs("invalid token", f);
  68                 return;
  69         }
  70
  71         const symbol_t *symbol = token_symbols[token_type];
  72         if(symbol != NULL) {
  73                 fprintf(f, "'%s'", symbol->string);
  74         } else {
  75                 if(token_type >= 0 && token_type < 256) {
  76                         fprintf(f, "'%c'", token_type);
  77                         return;
  78                 }
  79                 fputs("unknown token", f);
  80         }
  81 }
  82
  83 void print_token(FILE *f, const token_t *token)
  84 {
  85         switch(token->type) {
  86         case T_IDENTIFIER:
  87                 fprintf(f, "symbol '%s'", token->v.symbol->string);
  88                 break;
  89         case T_INTEGER:
  90                 fprintf(f, "integer number %lld", token->v.intvalue);
  91                 break;
  92         case T_FLOATINGPOINT:
  93                 fprintf(f, "floatingpointer number %LF", token->v.floatvalue);
  94                 break;
  95         case T_STRING_LITERAL:
  96                 fprintf(f, "string '%s'", token->v.string);
  97                 break;
  98         default:
  99                 print_token_type(f, (token_type_t)token->type);
 100                 break;
 101         }
 102 }