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* src/gram.h (rule_s): prec and precsym are now pointers

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to the bucket giving the priority/associativity.
Member `associativity' removed: useless.
* src/reduce.c, src/conflicts.c: Adjust.
This commit is contained in:
Akim Demaille
2002-04-07 17:42:31 +00:00
parent 8b3df748a3
commit 03b31c0ce8
6 changed files with 37 additions and 33 deletions
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25
src/gram.h
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@@ -54,23 +54,24 @@
RULES is an array of struct rule_s, which members are:
RULES[R].lhs -- the symbol number of the left hand side of rule R.
If -1, the rule has been thrown out by reduce.c and should be
ignored.
RULES[R].lhs -- the symbol of the left hand side of rule R.
RULES[R].rhs -- the index in RITEM of the beginning of the portion
for rule R.
RULES[R].prec -- the precedence level of R.
RULES[R].prec -- the symbol providing the precedence level of R.
RULES[R].precsym -- the symbol-number of the symbol in %prec for R
(if any).
RULES[R].precsym -- the symbol attached (via %prec) to give its
precedence to R. Of course, if set, it is equal to `prec', but we
need to distinguish one from the other when reducing: a symbol used
in a %prec is not useless.
RULES[R].assoc -- the associativity of R.
RULES[R].line -- the line where R was defined.
RULES[R].useful -- TRUE iff the rule is used.
RULES[R].useful -- TRUE iff the rule is used (i.e., FALSE if thrown
away by reduce).
The right hand side is stored as symbol numbers in a portion of
RITEM.
@@ -126,9 +127,13 @@ typedef struct rule_s
bucket *lhs;
short *rhs;
short prec;
short precsym;
associativity assoc;
/* This symbol provides both the associativity, and the precedence. */
bucket *prec;
/* This symbol was attached to the rule via %prec. */
bucket *precsym;
short line;
bool useful;