Hello,
I am sorry, my editor (vim) was not correctly configure (I used
http://gcc.gnu.org/ml/gcc/2011-03/msg00425.html to improve it). I guess
it is ok now.
If I still have issue, I will post on the mailing list if there is some
tips for vim otherway I will use Emacs (I am not very comfortable with
it for now ;).
Pierre Vittet
On 03/06/2011 17:47, Basile Starynkevitch wrote:
On Fri, 03 Jun 2011 17:31:25 +0200
Pierre Vittet<pier...@pvittet.com> wrote:
Thank you for your answer!
I send you a new patch
I have corrected the errors you raised.
I have make my patch compatible with the old use of c_register_pragma
and c_register_pragma_with_expansion.
I find the patch quite interesting, but I cannot approve it.
void
+c_register_pragma_with_expansion_and_data (const char *space, const char *name,
+
pragma_handler_2arg handler,
+ void * data)
Perhaps there are some spaces (vs tabs) issues here.
Cheers
Index: gcc/c-family/c-pragma.c
===================================================================
--- gcc/c-family/c-pragma.c (revision 174521)
+++ gcc/c-family/c-pragma.c (working copy)
@@ -1148,12 +1148,12 @@ handle_pragma_float_const_decimal64 (cpp_reader *A
}
/* A vector of registered pragma callbacks. */
+/* This is never freed as we need it during the whole execution. */
+DEF_VEC_O (internal_pragma_handler);
+DEF_VEC_ALLOC_O (internal_pragma_handler, heap);
-DEF_VEC_O (pragma_handler);
-DEF_VEC_ALLOC_O (pragma_handler, heap);
+static VEC(internal_pragma_handler, heap) *registered_pragmas;
-static VEC(pragma_handler, heap) *registered_pragmas;
-
typedef struct
{
const char *space;
@@ -1216,7 +1216,7 @@ c_pp_lookup_pragma (unsigned int id, const char **
static void
c_register_pragma_1 (const char *space, const char *name,
- pragma_handler handler, bool allow_expansion)
+ internal_pragma_handler ihandler, bool allow_expansion)
{
unsigned id;
@@ -1235,8 +1235,9 @@ c_register_pragma_1 (const char *space, const char
}
else
{
- VEC_safe_push (pragma_handler, heap, registered_pragmas, &handler);
- id = VEC_length (pragma_handler, registered_pragmas);
+ VEC_safe_push (internal_pragma_handler, heap, registered_pragmas,
+ &ihandler);
+ id = VEC_length (internal_pragma_handler, registered_pragmas);
id += PRAGMA_FIRST_EXTERNAL - 1;
/* The C++ front end allocates 6 bits in cp_token; the C front end
@@ -1248,28 +1249,90 @@ c_register_pragma_1 (const char *space, const char
allow_expansion, false);
}
+/* Register a C pragma handler, using a space and a name. It disallows pragma
+expansion (if you want it, use c_register_pragma_with_expansion instead). */
void
-c_register_pragma (const char *space, const char *name, pragma_handler handler)
+c_register_pragma (const char *space, const char *name,
+ pragma_handler_1arg handler)
{
- c_register_pragma_1 (space, name, handler, false);
+ internal_pragma_handler ihandler;
+
+ ihandler.handler.handler_1arg = handler;
+ ihandler.extra_data = false;
+ ihandler.data = NULL;
+ c_register_pragma_1 (space, name, ihandler, false);
}
+/* Register a C pragma handler, using a space and a name, it also carries an
+extra data field which can be used by the handler. It disallows pragma
+expansion (if you want it, use c_register_pragma_with_expansion instead). */
void
+c_register_pragma_with_data (const char *space, const char *name,
+ pragma_handler_2arg handler, void * data)
+{
+ internal_pragma_handler ihandler;
+
+ ihandler.handler.handler_2arg = handler;
+ ihandler.extra_data = true;
+ ihandler.data = data;
+ c_register_pragma_1 (space, name, ihandler, false);
+}
+
+/* Register a C pragma handler, using a space and a name. It allows pragma
+expansion as in the following exemple:
+ #define NUMBER 10
+ #pragma count (NUMBER)
+Name expansion is still disallowed. */
+void
c_register_pragma_with_expansion (const char *space, const char *name,
- pragma_handler handler)
+ pragma_handler_1arg handler)
{
- c_register_pragma_1 (space, name, handler, true);
+ internal_pragma_handler ihandler;
+
+ ihandler.handler.handler_1arg = handler;
+ ihandler.extra_data = false;
+ ihandler.data = NULL;
+ c_register_pragma_1 (space, name, ihandler, true);
}
+/* Register a C pragma handler, using a space and a name, it also carries an
+extra data field which can be used by the handler. It allows pragma expansion
+as in the following exemple:
+ #define NUMBER 10
+ #pragma count (NUMBER)
+Name expansion is still disallowed. */
void
+c_register_pragma_with_expansion_and_data (const char *space, const char *name,
+ pragma_handler_2arg handler,
+ void * data)
+{
+ internal_pragma_handler ihandler;
+
+ ihandler.handler.handler_2arg = handler;
+ ihandler.extra_data = true;
+ ihandler.data = data;
+ c_register_pragma_1 (space, name, ihandler, true);
+}
+
+void
c_invoke_pragma_handler (unsigned int id)
{
- pragma_handler handler;
+ internal_pragma_handler * ihandler;
+ pragma_handler_1arg handler_1arg;
+ pragma_handler_2arg handler_2arg;
id -= PRAGMA_FIRST_EXTERNAL;
- handler = *VEC_index (pragma_handler, registered_pragmas, id);
-
- handler (parse_in);
+ ihandler = VEC_index (internal_pragma_handler, registered_pragmas, id);
+ if (ihandler->extra_data)
+ {
+ handler_2arg = ihandler->handler.handler_2arg;
+ handler_2arg (parse_in, ihandler->data);
+ }
+ else
+ {
+ handler_1arg = ihandler->handler.handler_1arg;
+ handler_1arg (parse_in);
+ }
}
/* Set up front-end pragmas. */
@@ -1308,7 +1371,8 @@ init_pragma (void)
c_register_pragma ("STDC", "FLOAT_CONST_DECIMAL64",
handle_pragma_float_const_decimal64);
- c_register_pragma_with_expansion (0, "redefine_extname",
handle_pragma_redefine_extname);
+ c_register_pragma_with_expansion (0, "redefine_extname",
+ handle_pragma_redefine_extname);
c_register_pragma (0, "extern_prefix", handle_pragma_extern_prefix);
c_register_pragma_with_expansion (0, "message", handle_pragma_message);
Index: gcc/c-family/c-pragma.h
===================================================================
--- gcc/c-family/c-pragma.h (revision 174521)
+++ gcc/c-family/c-pragma.h (working copy)
@@ -84,10 +84,39 @@ extern bool pop_visibility (int);
extern void init_pragma (void);
/* Front-end wrappers for pragma registration. */
-typedef void (*pragma_handler)(struct cpp_reader *);
-extern void c_register_pragma (const char *, const char *, pragma_handler);
-extern void c_register_pragma_with_expansion (const char *, const char *,
- pragma_handler);
+typedef void (*pragma_handler_1arg)(struct cpp_reader *);
+/* A second pragma handler, which adds a void * argument allowing to pass extra
+data to the handler. */
+typedef void (*pragma_handler_2arg)(struct cpp_reader *, void *);
+
+/* This union permits abstact the different handlers. */
+union gen_pragma_handler {
+ pragma_handler_1arg handler_1arg;
+ pragma_handler_2arg handler_2arg;
+};
+/* Internally use to keep the data of the handler. The field extra_data permit
+to know if handler is a pragma_handler_1arg (extra_data is false), or a
+pragma_handler_2arg (extra_data is true). */
+struct internal_pragma_handler_d {
+ union gen_pragma_handler handler;
+ bool extra_data;
+ void * data;
+};
+typedef struct internal_pragma_handler_d internal_pragma_handler;
+
+extern void c_register_pragma (const char * space, const char * name,
+ pragma_handler_1arg handler);
+extern void c_register_pragma_with_data (const char * space, const char * name,
+ pragma_handler_2arg handler,
+ void * data);
+
+extern void c_register_pragma_with_expansion (const char * space,
+ const char * name,
+ pragma_handler_1arg handler);
+extern void c_register_pragma_with_expansion_and_data (const char * space,
+ const char * name,
+ pragma_handler_2arg handler,
+ void * data);
extern void c_invoke_pragma_handler (unsigned int);
extern void maybe_apply_pragma_weak (tree);
