X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/3ae2b51f0851bfd63f73ca4bc263292839d757b1..d1a1114f7f257f89887ea5825ba0d896dfaa747b:/src/symtab.h diff --git a/src/symtab.h b/src/symtab.h index 4ca81465..fd029d90 100644 --- a/src/symtab.h +++ b/src/symtab.h @@ -22,19 +22,13 @@ #ifndef SYMTAB_H_ # define SYMTAB_H_ +# include "location.h" +# include "assoc.h" + /*----------. | Symbols. | `----------*/ -/* Associativity values for tokens and rules. */ -typedef enum -{ - right_assoc, - left_assoc, - non_assoc -} associativity; - - /* Symbol classes. */ typedef enum { @@ -51,14 +45,21 @@ typedef short symbol_number_t; typedef struct symbol_s symbol_t; struct symbol_s { - /* The key, name of the symbol. */ + /* The key, name of the symbol. */ char *tag; - /* Its type. */ + /* The location of its first occurence. */ + location_t location; + + /* Its %type and associated printer and destructor. */ char *type_name; + char *destructor; + location_t destructor_location; + char *printer; + location_t printer_location; 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. @@ -82,28 +83,54 @@ struct symbol_s /* Fetch (or create) the symbol associated to KEY. */ -symbol_t *getsym PARAMS ((const char *key)); +symbol_t *symbol_get PARAMS ((const char *key, location_t location)); -/* Declare the new SYMBOL. Make it an alias of SYMVAL, and type */ -/* them with TYPENAME. */ +/* 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, - char *typename)); + location_t location)); + +/* Set the TYPE_NAME associated to SYMBOL. Does nothing if passed 0 as + TYPE_NAME. */ +void symbol_type_set PARAMS ((symbol_t *symbol, + char *type_name, location_t location)); + +/* Set the DESTRUCTOR associated to SYMBOL. */ +void symbol_destructor_set PARAMS ((symbol_t *symbol, + char *destructor, location_t location)); -/* Set the TYPE_NAME associated to SYMBOL. */ -void symbol_type_set PARAMS ((symbol_t *symbol, char *type_name)); +/* Set the PRINTER associated to SYMBOL. */ +void symbol_printer_set PARAMS ((symbol_t *symbol, + char *printer, location_t location)); -/* Set the PRECEDENCE associated to SYMBOL. */ +/* 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. */ +void symbol_class_set PARAMS ((symbol_t *symbol, + symbol_class class, location_t location)); + +/* Set the USER_TOKEN_NUMBER associated to SYMBOL. */ +void symbol_user_token_number_set PARAMS ((symbol_t *symbol, + int user_number, + location_t location)); + /* Distinguished symbols. AXIOM is the real start symbol, that used by the automaton. STARTSYMBOL is the one specified by the user. */ 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; /*---------------. @@ -124,8 +151,8 @@ void symbols_do PARAMS ((symbol_processor processor, void *processor_data)); /* Free all the memory allocated for symbols. */ void symbols_free PARAMS ((void)); -/* Check that all the symbols are defined. Report any undefined */ -/* symbols and consider them nonterminals. */ +/* Check that all the symbols are defined. Report any undefined + symbols and consider them nonterminals. */ void symbols_check_defined PARAMS ((void)); /* Perform various sanity checks, assign symbol numbers, and set up