* doc/bison.texinfo (Stack Overflow): xref to Recursion.

[bison.git] / src / symtab.h

diff --git a/src/symtab.h b/src/symtab.h
index 54ff80fa5db8f07f978338a36d59827be28c9f42..fd029d9094a200a56c8ecf0a096604f083a11d63 100644 (file)
--- a/src/symtab.h
+++ b/src/symtab.h
@@ -23,21 +23,12 @@
 # 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
 {
@@ -56,17 +47,19 @@ struct symbol_s
 {
   /* The key, name of the symbol.  */
   char *tag;
+  /* The location of its first occurence.  */
+  location_t location;
 
-  /* Its %type and associated destructor.  */
+  /* Its %type and associated printer and destructor.  */
   char *type_name;
   char *destructor;
-
-  /* The location of its first occurence.  */
-  location_t location;
+  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.
@@ -89,42 +82,44 @@ struct symbol_s
 #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.  */
-void symbol_type_set PARAMS ((symbol_t *symbol, location_t location,
-                             char *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, location_t location,
-                                   char *destructor));
+void symbol_destructor_set PARAMS ((symbol_t *symbol,
+                                   char *destructor, location_t location));
+
+/* 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.  Ensures that SYMBOL is a
    terminal.  Does nothing if invoked with UNDEF_ASSOC as ASSOC.  */
-void symbol_precedence_set PARAMS ((symbol_t *symbol, location_t location,
-                                   int prec, associativity assoc));
+void symbol_precedence_set PARAMS ((symbol_t *symbol,
+                                   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));
+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));
+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
@@ -132,8 +127,8 @@ void symbol_user_token_number_set PARAMS ((symbol_t *symbol, int user_number));
    */
 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;