(item_number): Renamed from item_number_t.

(rule_number): Renamed from rule_number_t.
(struct rule_s): Remove the "rule_s" part; not used.
(rule): Renamed from rule_t.
(rule_filter): Renamed from rule_filter_t.
(ITEM_NUMBER_MAX, ITEM_NUMBER_MIN, RULE_NUMBER_MAX):
Remove; unused.
This commit is contained in:
Paul Eggert
2002-12-11 06:33:22 +00:00
parent e8a0acd666
commit 7478c462f2

View File

@@ -52,7 +52,7 @@
The rules themselves are described by several arrays: amongst which The rules themselves are described by several arrays: amongst which
RITEM, and RULES. RITEM, and RULES.
RULES is an array of struct rule_s, which members are: RULES is an array of rules, whose members are:
RULES[R].lhs -- the symbol of the left hand side of rule R. RULES[R].lhs -- the symbol of the left hand side of rule R.
@@ -113,105 +113,102 @@ extern int nsyms;
extern int ntokens; extern int ntokens;
extern int nvars; extern int nvars;
typedef int item_number_t; typedef int item_number;
# define ITEM_NUMBER_MAX ((item_number_t) INT_MAX) extern item_number *ritem;
# define ITEM_NUMBER_MIN ((item_number_t) INT_MIN)
extern item_number_t *ritem;
extern unsigned int nritems; extern unsigned int nritems;
/* There is weird relationship between OT1H item_number_t and OTOH /* There is weird relationship between OT1H item_number and OTOH
symbol_number_t and rule_number_t: we store the latter in symbol_number and rule_number: we store the latter in
item_number_t. symbol_number_t are stored as are, while item_number. symbol_number values are stored as-is, while
the negation of (rule_number_t + 1) are stored. the negation of (rule_number + 1) is stored.
Therefore, an symbol_number_t must be a valid item_number_t, and we Therefore, a symbol_number must be a valid item_number, and we
sometimes have to perform the converse transformation. */ sometimes have to perform the converse transformation. */
# define symbol_number_as_item_number(Tok) ((item_number_t) (Tok)) # define symbol_number_as_item_number(Tok) ((item_number) (Tok))
# define item_number_as_symbol_number(Ite) ((symbol_number_t) (Ite)) # define item_number_as_symbol_number(Ite) ((symbol_number) (Ite))
extern symbol_number_t start_symbol; extern symbol_number start_symbol;
/* Rules numbers. */ /* Rule numbers. */
typedef short rule_number_t; typedef short rule_number;
# define RULE_NUMBER_MAX ((rule_number_t) SHRT_MAX) extern rule_number nrules;
extern rule_number_t nrules;
# define int_of_rule_number(RNum) ((int) (RNum)) # define int_of_rule_number(RNum) ((int) (RNum))
# define rule_number_as_item_number(RNum) ((item_number_t) (- RNum - 1)) # define rule_number_as_item_number(RNum) ((item_number) (- RNum - 1))
# define item_number_as_rule_number(INum) ((rule_number_t) (- INum - 1)) # define item_number_as_rule_number(INum) ((rule_number) (- INum - 1))
/*--------. /*--------.
| Rules. | | Rules. |
`--------*/ `--------*/
typedef struct rule_s typedef struct
{ {
/* The number of the rule in the source. It is usually the index in /* The number of the rule in the source. It is usually the index in
RULES too, except if there are useless rules. */ RULES too, except if there are useless rules. */
rule_number_t user_number; rule_number user_number;
/* The index in RULES. Usually the rule number in the source, /* The index in RULES. Usually the rule number in the source,
except if some rules are useless. */ except if some rules are useless. */
rule_number_t number; rule_number number;
symbol_t *lhs; symbol *lhs;
item_number_t *rhs; item_number *rhs;
/* This symbol provides both the associativity, and the precedence. */ /* This symbol provides both the associativity, and the precedence. */
symbol_t *prec; symbol *prec;
short dprec; short dprec;
short merger; short merger;
/* This symbol was attached to the rule via %prec. */ /* This symbol was attached to the rule via %prec. */
symbol_t *precsym; symbol *precsym;
location_t location; location location;
bool useful; bool useful;
const char *action; const char *action;
location_t action_location; location action_location;
} rule_t; } rule;
extern struct rule_s *rules; extern rule *rules;
/* A function that selects a rule. */ /* A function that selects a rule. */
typedef bool (*rule_filter_t) (rule_t *r); typedef bool (*rule_filter) (rule *);
/* Return true IFF the rule has a `number' smaller than NRULES. */ /* Return true IFF the rule has a `number' smaller than NRULES. */
bool rule_useful_p (rule_t *r); bool rule_useful_p (rule *r);
/* Return true IFF the rule has a `number' higher than NRULES. */ /* Return true IFF the rule has a `number' higher than NRULES. */
bool rule_useless_p (rule_t *r); bool rule_useless_p (rule *r);
/* Return true IFF the rule is not flagged as useful *and* is useful. /* Return true IFF the rule is not flagged as useful *and* is useful.
In other words, it was discarded because of conflicts. */ In other words, it was discarded because of conflicts. */
bool rule_never_reduced_p (rule_t *r); bool rule_never_reduced_p (rule *r);
/* Print this RULE's number and lhs on OUT. If a PREVIOUS_LHS was /* Print this rule's number and lhs on OUT. If a PREVIOUS_LHS was
already displayed (by a previous call for another rule), avoid already displayed (by a previous call for another rule), avoid
useless repetitions. */ useless repetitions. */
void rule_lhs_print (rule_t *rule, symbol_t *previous_lhs, FILE *out); void rule_lhs_print (rule *r, symbol *previous_lhs, FILE *out);
/* Return the length of the RHS. */ /* Return the length of the RHS. */
int rule_rhs_length (rule_t *rule); int rule_rhs_length (rule *r);
/* Print this RULE's RHS on OUT. */ /* Print this rule's RHS on OUT. */
void rule_rhs_print (rule_t *rule, FILE *out); void rule_rhs_print (rule *r, FILE *out);
/* Print this RULE on OUT. */ /* Print this rule on OUT. */
void rule_print (rule_t *rule, FILE *out); void rule_print (rule *r, FILE *out);
/* Table of the symbols, indexed by the symbol number. */ /* Table of the symbols, indexed by the symbol number. */
extern symbol_t **symbols; extern symbol **symbols;
/* TOKEN_TRANSLATION -- a table indexed by a token number as returned /* TOKEN_TRANSLATION -- a table indexed by a token number as returned
by the user's yylex routine, it yields the internal token number by the user's yylex routine, it yields the internal token number
used by the parser and throughout bison. */ used by the parser and throughout bison. */
extern symbol_number_t *token_translations; extern symbol_number *token_translations;
extern int max_user_token_number; extern int max_user_token_number;
@@ -236,7 +233,7 @@ size_t ritem_longest_rhs (void);
/* Print the grammar's rules numbers from BEGIN (inclusive) to END /* Print the grammar's rules numbers from BEGIN (inclusive) to END
(exclusive) on OUT under TITLE. */ (exclusive) on OUT under TITLE. */
void grammar_rules_partial_print (FILE *out, const char *title, void grammar_rules_partial_print (FILE *out, const char *title,
rule_filter_t filter); rule_filter filter);
/* Print the grammar's rules on OUT. */ /* Print the grammar's rules on OUT. */
void grammar_rules_print (FILE *out); void grammar_rules_print (FILE *out);