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Split the default %destructor/%printer into two kinds: <*> and <!>.

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Discussed starting at
<http://lists.gnu.org/archive/html/bison-patches/2006-09/msg00060.html>.
* NEWS (2.3a+): Mention.
* doc/bison.texinfo (Freeing Discarded Symbols): Document this and the
previous change today related to mid-rules.
(Bison Symbols): Remove %symbol-default and add <*> and <!>.
* src/parser-gram.y (PERCENT_SYMBOL_DEFAULT): Remove.
(TYPE_TAG_ANY): Add as <*>.
(TYPE_TAG_NONE): Add as <!>.
(generic_symlist_item): Remove RHS for %symbol-default and add RHS's
for <*> and <!>.
* src/scan-gram.l (PERCENT_SYMBOL_DEFAULT): Remove.
(TYPE_TAG_ANY, TYPE_TAG_NONE): Add.
* src/symlist.c (symbol_list_default_new): Split into tagged and
tagless versions.
(symbol_list_destructor_set, symbol_list_printer_set): Split
SYMLIST_DEFAULT case into SYMLIST_DEFAULT_TAGGED and
SYMLIST_DEFAULT_TAGLESS.
* src/symlist.h: Update symbol_list_default*_new prototypes.
(symbol_list.content_type): Split enum value SYMLIST_DEFAULT into
SYMLIST_DEFAULT_TAGGED and SYMLIST_DEFAULT_TAGLESS.
* src/symtab.c (default_destructor, default_destructor_location,
default_printer, default_printer_location): Split each into tagged and
tagless versions.
(symbol_destructor_get, symbol_destructor_location_get,
symbol_printer_get, symbol_printer_location_get): Implement tagged
default and tagless default cases.
(default_destructor_set, default_printer_set): Split each into tagged
and tagless versions.
* src/symtab.h: Update prototypes.
* tests/actions.at (Default %printer and %destructor): Rename to...
(Default tagless %printer and %destructor): ... this, and extend.
(Per-type %printer and %destructor): Rename to...
(Default tagged and per-type %printer and %destructor): ... this, and
extend.
(Default %printer and %destructor for user-defined end token): Extend.
(Default %printer and %destructor are not for error or $undefined):
Update.
(Default %printer and %destructor are not for $accept): Update.
(Default %printer and %destructor for mid-rule values): Extend.
* tests/input.at (Default %printer and %destructor redeclared): Extend.
(Unused values with default %destructor): Extend.
This commit is contained in:
Joel E. Denny
2006-10-21 10:03:35 +00:00
parent f91b162944
commit 12e3584054
13 changed files with 870 additions and 602 deletions
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22
src/symtab.h
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@@ -69,8 +69,8 @@ struct symbol
/** Any \c \%destructor declared specifically for this symbol.
Access this field only through <tt>symbol</tt>'s interface functions. For
example, if <tt>symbol::destructor = NULL</tt>, the default
\c \%destructor or a per-type \c \%destructor might be appropriate, and
example, if <tt>symbol::destructor = NULL</tt>, a default \c \%destructor
or a per-type \c \%destructor might be appropriate, and
\c symbol_destructor_get will compute the correct one. */
const char *destructor;
@@ -255,14 +255,18 @@ void symbols_check_defined (void);
void symbols_pack (void);
/*-----------------------------------.
| Default %destructor and %printer. |
`-----------------------------------*/
/*---------------------------------------.
| Default %destructor's and %printer's. |
`---------------------------------------*/
/** Set the default \c \%destructor. */
void default_destructor_set (const char *destructor, location loc);
/** Set the default \c \%destructor for tagged values. */
void default_tagged_destructor_set (const char *destructor, location loc);
/** Set the default \c \%destructor for tagless values. */
void default_tagless_destructor_set (const char *destructor, location loc);
/** Set the default \c \%printer. */
void default_printer_set (const char *printer, location loc);
/** Set the default \c \%printer for tagged values. */
void default_tagged_printer_set (const char *printer, location loc);
/** Set the default \c \%printer for tagless values. */
void default_tagless_printer_set (const char *printer, location loc);
#endif /* !SYMTAB_H_ */