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Finish implementation of per-type %destructor/%printer. Discussed

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starting at
<http://lists.gnu.org/archive/html/bison-patches/2006-02/msg00064.html>
and
<http://lists.gnu.org/archive/html/bison-patches/2006-06/msg00091.html>.
* NEWS (2.3+): Add a description of this feature to the default
%destructor/%printer description.
* doc/bison.texinfo (Freeing Discarded Symbols): Likewise.
* src/symlist.c (symbol_list_destructor_set, symbol_list_printer_set):
Invoke semantic_type_destructor_set or semantic_type_printer_set when a
list node contains a semantic type.
* src/symtab.c, src/symtab.h: Extend with a table that associates
semantic types with their %destructor's and %printer's.
(semantic_type_from_uniqstr, semantic_type_get,
semantic_type_destructor_set, semantic_type_printer_set): New functions
composing the public interface of that table.
(symbol_destructor_get, symbol_destructor_location_get,
symbol_printer_get, symbol_printer_location_get):  If there's no
per-symbol %destructor/%printer, look up the per-type before trying
the default.
* tests/actions.at (Per-type %printer and %destructor): New test case.
* tests/input.at (Default %printer and %destructor redeclared):
Extend to check that multiple occurrences of %symbol-default in a
single %destructor/%printer declaration is an error.
(Per-type %printer and %destructor redeclared, Unused values with
per-type %destructor): New test cases.
This commit is contained in:
Joel E. Denny
2006-09-04 22:20:52 +00:00
parent 3be03b13e5
commit b2a0b7ca70
8 changed files with 484 additions and 45 deletions
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6
src/symlist.c
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@@ -212,7 +212,8 @@ symbol_list_destructor_set (symbol_list *node, const char *destructor,
symbol_destructor_set (node->content.sym, destructor, loc);
break;
case SYMLIST_TYPE:
/* FIXME: */
semantic_type_destructor_set (
semantic_type_get (node->content.type_name), destructor, loc);
break;
case SYMLIST_DEFAULT:
default_destructor_set (destructor, loc);
@@ -229,7 +230,8 @@ symbol_list_printer_set (symbol_list *node, const char *printer, location loc)
symbol_printer_set (node->content.sym, printer, loc);
break;
case SYMLIST_TYPE:
/* FIXME: */
semantic_type_printer_set (
semantic_type_get (node->content.type_name), printer, loc);
break;
case SYMLIST_DEFAULT:
default_printer_set (printer, loc);