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
  36 void exit_tokens(void)
  37 {
  38 }
  39
  40 void print_token_type(FILE *f, token_type_t token_type)
  41 {
  42         if(token_type >= 0 && token_type < 256) {
  43                 fprintf(f, "'%c'", token_type);
  44                 return;
  45         }
  46         if(token_type == T_EOF) {
  47                 fputs("end of file", f);
  48                 return;
  49         }
  50
  51         int token_symbols_len = T_LAST_TOKEN;
  52         if(token_type < 0 || token_type >= token_symbols_len) {
  53                 fputs("invalid token", f);
  54                 return;
  55         }
  56
  57         const symbol_t *symbol = token_symbols[token_type];
  58         if(symbol != NULL) {
  59                 fputs(symbol->string, f);
  60         } else {
  61                 fputs("unknown token", f);
  62         }
  63 }
  64
  65 void print_token(FILE *f, const token_t *token)
  66 {
  67         switch(token->type) {
  68         case T_IDENTIFIER:
  69                 fprintf(f, "symbol '%s'", token->v.symbol->string);
  70                 break;
  71         case T_INTEGER:
  72                 fprintf(f, "integer number %d", token->v.intvalue);
  73                 break;
  74         case T_STRING_LITERAL:
  75                 fprintf(f, "string '%s'", token->v.string);
  76                 break;
  77         default:
  78                 print_token_type(f, token->type);
  79                 break;
  80         }
  81 }