Have Bison grammars parsed by a Bison grammar.

[bison.git] / src / gram.h

diff --git a/src/gram.h b/src/gram.h
index d02964ffb825be190a218021d1ba655b8230f87f..a5079e379042718345766ec8d3652d75b7b0e420 100644 (file)
--- a/src/gram.h
+++ b/src/gram.h
@@ -81,11 +81,9 @@
    contains minus R, which identifies it as the end of a portion and
    says which rule it is for.
 
-   The portions of RITEM come in order of increasing rule number and
-   are followed by an element which is zero to mark the end.  nritems
-   is the total length of ritem, not counting the final zero.  Each
-   element of RITEM is called an "item" and its index in RITEM is an
-   item number.
+   The portions of RITEM come in order of increasing rule number.
+   NRITEMS is the total length of RITEM.  Each element of RITEM is
+   called an "item" and its index in RITEM is an item number.
 
    Item numbers are used in the finite state machine to represent
    places that parsing can get to.
@@ -112,18 +110,18 @@ extern int nvars;
 #define ITEM_NUMBER_MAX INT_MAX
 typedef int item_number_t;
 extern item_number_t *ritem;
-extern int nritems;
+extern unsigned int nritems;
 
 /* There is weird relationship between item_number_t and
-   token_number_t: we store token_number_t in item_number_t, but in
+   symbol_number_t: we store symbol_number_t in item_number_t, but in
    the latter we also store, as negative numbers, the rule numbers.
 
-   Therefore, an token_number_t must be a valid item_number_t, and we
+   Therefore, an symbol_number_t must be a valid item_number_t, and we
    sometimes have to perform the converse transformation.  */
-#define token_number_as_item_number(Tok) ((item_number_t) (Tok))
-#define item_number_as_token_number(Ite) ((token_number_t) (Ite))
+#define symbol_number_as_item_number(Tok) ((item_number_t) (Tok))
+#define item_number_as_symbol_number(Ite) ((symbol_number_t) (Ite))
 
-extern token_number_t start_symbol;
+extern symbol_number_t start_symbol;
 
 
 typedef struct rule_s
@@ -160,7 +158,7 @@ extern symbol_t **symbols;
 /* TOKEN_TRANSLATION -- a table indexed by a token number as returned
    by the user's yylex routine, it yields the internal token number
    used by the parser and throughout bison.  */
-extern token_number_t *token_translations;
+extern symbol_number_t *token_translations;
 extern int max_user_token_number;
 
 
@@ -181,4 +179,7 @@ size_t ritem_longest_rhs PARAMS ((void));
 /* Dump the grammar. */
 void grammar_dump PARAMS ((FILE *out, const char *title));
 
+/* Free the packed grammar. */
+void grammar_free PARAMS ((void));
+
 #endif /* !GRAM_H_ */