# define SYMTAB_H_
# include "location.h"
+# include "assoc.h"
/*----------.
| Symbols. |
`----------*/
-/* Associativity values for tokens and rules. */
-typedef enum
-{
- undef_assoc,
- right_assoc,
- left_assoc,
- non_assoc
-} associativity;
-
-
/* Symbol classes. */
typedef enum
{
symbol_number_t number;
short prec;
- associativity assoc;
+ assoc_t assoc;
int user_token_number;
/* Points to the other in the identifier-symbol pair for an alias.
#define NUMBER_UNDEFINED ((symbol_number_t) -1)
-/* Return the tag of this SYMBOL in a printable form. Warning: uses
- the QUOTEARG slot 0. */
-const char *symbol_tag_get PARAMS ((symbol_t *symbol));
-
-/* Return the tag of this SYMBOL in a printable form. Use the
- QUOTEARG slot number N. */
-const char *symbol_tag_get_n PARAMS ((symbol_t *symbol, int n));
-
-/* Print the tag of this SYMBOL. */
-void symbol_tag_print PARAMS ((symbol_t *symbol, FILE *out));
-
/* Fetch (or create) the symbol associated to KEY. */
-symbol_t *getsym PARAMS ((const char *key, location_t location));
+symbol_t *symbol_get PARAMS ((const char *key, location_t location));
+
+/* Generate a dummy nonterminal, whose name cannot conflict with the
+ user's names. */
+symbol_t *dummy_symbol_get PARAMS ((location_t location));
/* Declare the new SYMBOL. Make it an alias of SYMVAL. */
-void symbol_make_alias PARAMS ((symbol_t *symbol, symbol_t *symval));
+void symbol_make_alias PARAMS ((symbol_t *symbol, symbol_t *symval,
+ location_t location));
/* Set the TYPE_NAME associated to SYMBOL. Does nothing if passed 0 as
TYPE_NAME. */
/* Set the PRECEDENCE associated to SYMBOL. Ensures that SYMBOL is a
terminal. Does nothing if invoked with UNDEF_ASSOC as ASSOC. */
void symbol_precedence_set PARAMS ((symbol_t *symbol,
- int prec, associativity assoc,
+ int prec, assoc_t assoc,
location_t location));
/* Set the CLASS associated to SYMBOL. */
*/
extern symbol_t *errtoken;
extern symbol_t *undeftoken;
-extern symbol_t *eoftoken;
-extern symbol_t *axiom;
+extern symbol_t *endtoken;
+extern symbol_t *accept;
extern symbol_t *startsymbol;
extern location_t startsymbol_location;