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         int       last_id = -2;
  20
  21         memset(token_symbols, 0, T_LAST_TOKEN * sizeof(token_symbols[0]));
  22
  23 #define T(mode,x,str,val)                                          \
  24         if (T_##x > 255) {                                             \
  25                 assert(T_##x >= last_id);                                  \
  26                 last_id = T_##x;                                           \
  27         }                                                              \
  28         if (c_mode & (mode)) {                                         \
  29                 assert(T_##x >= 0 && T_##x < T_LAST_TOKEN);                \
  30                 symbol               = symbol_table_insert(str);           \
  31                 symbol->ID           = T_##x;                              \
  32                 token_symbols[T_##x] = symbol;                             \
  33         }
  34
  35 #define TS(x,str,val)                                              \
  36         assert(T_##x >= 0 && T_##x < T_LAST_TOKEN);                    \
  37         symbol               = symbol_table_insert(str);               \
  38         token_symbols[T_##x] = symbol;
  39
  40 #include "tokens.inc"
  41
  42 #undef TS
  43 #undef T
  44
  45 #define T(mode,x,str,val)                                          \
  46         assert(TP_##x >= 0 && TP_##x < TP_LAST_TOKEN);                 \
  47         symbol               = symbol_table_insert(str);               \
  48         symbol->pp_ID        = TP_##x;
  49
  50 #include "tokens_preprocessor.inc"
  51
  52 #undef T
  53 }
  54
  55 void exit_tokens(void)
  56 {
  57 }
  58
  59 void print_token_type(FILE *f, token_type_t token_type)
  60 {
  61         if(token_type == T_EOF) {
  62                 fputs("end of file", f);
  63                 return;
  64         }
  65         if(token_type == T_ERROR) {
  66                 fputs("error", f);
  67                 return;
  68         }
  69
  70         int token_symbols_len = T_LAST_TOKEN;
  71         if(token_type < 0 || token_type >= token_symbols_len) {
  72                 fputs("invalid token", f);
  73                 return;
  74         }
  75
  76         const symbol_t *symbol = token_symbols[token_type];
  77         if(symbol != NULL) {
  78                 fprintf(f, "'%s'", symbol->string);
  79         } else {
  80                 if(token_type >= 0 && token_type < 256) {
  81                         fprintf(f, "'%c'", token_type);
  82                         return;
  83                 }
  84                 fputs("unknown token", f);
  85         }
  86 }
  87
  88 void print_token(FILE *f, const token_t *token)
  89 {
  90         switch(token->type) {
  91         case T_IDENTIFIER:
  92                 fprintf(f, "symbol '%s'", token->v.symbol->string);
  93                 break;
  94         case T_INTEGER:
  95                 fprintf(f, "integer number %lld", token->v.intvalue);
  96                 break;
  97         case T_FLOATINGPOINT:
  98                 fprintf(f, "floatingpointer number %LF", token->v.floatvalue);
  99                 break;
 100         case T_STRING_LITERAL:
 101                 fprintf(f, "string '%s'", token->v.string.begin); /* TODO suboptimal */
 102                 break;
 103         default:
 104                 print_token_type(f, (token_type_t)token->type);
 105                 break;
 106         }
 107 }