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Move logic out of symbol_find_demangled_name

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This patch moves most of the demangling logic out of
symbol_find_demangled_name into the various language_defn objects.

The simplest way to do this seemed to be to add a new method to
language_defn.  This is shame given the existing la_demangle, but
given Ada's unusual needs, and the differing demangling options
between languages, la_demangle didn't seem to fit.

In order to make this work, I made enum language order-sensitive.
This helps preserve the current ordering of demangling operations.

2016-06-23  Tom Tromey  <tom@tromey.com>

	* symtab.c (symbol_find_demangled_name): Loop over languages and
	use language_sniff_from_mangled_name.
	* rust-lang.c (rust_sniff_from_mangled_name): New function.
	(rust_language_defn): Update.
	* p-lang.c (pascal_language_defn): Update.
	* opencl-lang.c (opencl_language_defn): Update.
	* objc-lang.c (objc_sniff_from_mangled_name): New function.
	(objc_language_defn): Update.
	* m2-lang.c (m2_language_defn): Update.
	* language.h (struct language_defn) <la_sniff_from_mangled_name>: New
	field.
	(language_sniff_from_mangled_name): Declare.
	* language.c (language_sniff_from_mangled_name): New function.
	(unknown_language_defn, auto_language_defn, local_language_defn):
	Update.
	* jv-lang.c (java_sniff_from_mangled_name): New function.
	(java_language_defn): Use it.
	* go-lang.c (go_sniff_from_mangled_name): New function.
	(go_language_defn): Use it.
	* f-lang.c (f_language_defn): Update.
	* defs.h (enum language): Reorder.
	* d-lang.c (d_sniff_from_mangled_name): New function.
	(d_language_defn): Use it.
	* cp-support.h (gdb_sniff_from_mangled_name): Declare.
	* cp-support.c (gdb_sniff_from_mangled_name): New function.
	* c-lang.c (c_language_defn, cplus_language_defn)
	(asm_language_defn, minimal_language_defn): Update.
	* ada-lang.c (ada_sniff_from_mangled_name): New function.
	(ada_language_defn): Use it.
This commit is contained in:
Tom Tromey 2016-05-26 15:04:07 -06:00
parent 56618e20bc
commit 8b302db80c
18 changed files with 225 additions and 99 deletions
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23
gdb/language.h
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@ -292,6 +292,22 @@ struct language_defn
/* Return demangled language symbol, or NULL. */
char *(*la_demangle) (const char *mangled, int options);
/* Demangle a symbol according to this language's rules. Unlike
la_demangle, this does not take any options.
*DEMANGLED will be set by this function.
If this function returns 0, then *DEMANGLED must always be set
to NULL.
If this function returns 1, the implementation may set this to
a xmalloc'd string holding the demangled form. However, it is
not required to. The string, if any, is owned by the caller.
The resulting string should be of the form that will be
installed into a symbol. */
int (*la_sniff_from_mangled_name) (const char *mangled, char **demangled);
/* Return class name of a mangled method name or NULL. */
char *(*la_class_name_from_physname) (const char *physname);
@ -565,6 +581,13 @@ extern CORE_ADDR skip_language_trampoline (struct frame_info *, CORE_ADDR pc);
extern char *language_demangle (const struct language_defn *current_language,
const char *mangled, int options);
/* A wrapper for la_sniff_from_mangled_name. The arguments and result
are as for the method. */
extern int language_sniff_from_mangled_name (const struct language_defn *lang,
const char *mangled,
char **demangled);
/* Return class name from physname, or NULL. */
extern char *language_class_name_from_physname (const struct language_defn *,
const char *physname);