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symbols: improve symbol aliasing

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Rather than having duplicate info in the symbol and the alias that has
to be resolved later on, both the symbol and the alias have a common
pointer to a separate structure containing this info.

* src/symtab.h (sym_content): New structure.
* src/symtab.c (sym_content_new, sym_content_free, symbol_free): New

* src/AnnotationList.c, src/conflicts.c, src/gram.c, src/gram.h,
* src/graphviz.c, src/ielr.c, src/output.c, src/parse-gram.y, src/print.c
* src/print-xml.c, src/print_graph.c, src/reader.c, src/reduce.c,
* src/state.h, src/symlist.c, src/symtab.c, src/symtab.h, src/tables.c:
Adjust.

* tests/input.at: Fix expectations (order changes).
This commit is contained in:
Valentin Tolmer
2013-07-31 11:51:59 +02:00
committed by Akim Demaille
parent c4aa4ff541
commit a728075710
18 changed files with 262 additions and 267 deletions
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9
src/gram.h
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@@ -180,17 +180,17 @@ typedef struct
except if some rules are useless. */
rule_number number;
symbol *lhs;
sym_content *lhs;
item_number *rhs;
/* This symbol provides both the associativity, and the precedence. */
symbol *prec;
sym_content *prec;
int dprec;
int merger;
/* This symbol was attached to the rule via %prec. */
symbol *precsym;
sym_content *precsym;
location location;
bool useful;
@@ -220,7 +220,8 @@ bool rule_useless_in_parser_p (rule const *r);
/* Print this rule's number and lhs on OUT. If a PREVIOUS_LHS was
already displayed (by a previous call for another rule), avoid
useless repetitions. */
void rule_lhs_print (rule const *r, symbol const *previous_lhs, FILE *out);
void rule_lhs_print (rule const *r, sym_content const *previous_lhs,
FILE *out);
void rule_lhs_print_xml (rule const *r, FILE *out, int level);
/* Return the length of the RHS. */