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