/[bison]/bison/src/gram.h
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revision 1.36 by akim, Tue May 7 08:07:32 2002 UTC revision 1.37 by akim, Sun May 26 18:39:04 2002 UTC
# Line 113  extern item_number_t *ritem; Line 113  extern item_number_t *ritem;
113  extern unsigned int nritems;  extern unsigned int nritems;
114    
115  /* There is weird relationship between item_number_t and  /* There is weird relationship between item_number_t and
116     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
117     the latter we also store, as negative numbers, the rule numbers.     the latter we also store, as negative numbers, the rule numbers.
118    
119     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
120     sometimes have to perform the converse transformation.  */     sometimes have to perform the converse transformation.  */
121  #define token_number_as_item_number(Tok) ((item_number_t) (Tok))  #define symbol_number_as_item_number(Tok) ((item_number_t) (Tok))
122  #define item_number_as_token_number(Ite) ((token_number_t) (Ite))  #define item_number_as_symbol_number(Ite) ((symbol_number_t) (Ite))
123    
124  extern token_number_t start_symbol;  extern symbol_number_t start_symbol;
125    
126    
127  typedef struct rule_s  typedef struct rule_s
# Line 158  extern symbol_t **symbols; Line 158  extern symbol_t **symbols;
158  /* TOKEN_TRANSLATION -- a table indexed by a token number as returned  /* TOKEN_TRANSLATION -- a table indexed by a token number as returned
159     by the user's yylex routine, it yields the internal token number     by the user's yylex routine, it yields the internal token number
160     used by the parser and throughout bison.  */     used by the parser and throughout bison.  */
161  extern token_number_t *token_translations;  extern symbol_number_t *token_translations;
162  extern int max_user_token_number;  extern int max_user_token_number;
163    
164    

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