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gccrs: libproc_macro: Add helpers to construct Procmacro

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Add some helper functions to create Procmacro tagged unions.

libgrust/ChangeLog:

	* libproc_macro/proc_macro.cc (Procmacro::make_derive):
	Add custom derive macro constructor.
	(Procmacro::make_attribute): Add attribute macro constructor.
	(Procmacro::make_bang): Add bang macro constructor.
	* libproc_macro/proc_macro.h (struct Procmacro):
	Add helper function prototypes.

Signed-off-by: Pierre-Emmanuel Patry <pierre-emmanuel.patry@embecosm.com>
This commit is contained in:
Pierre-Emmanuel Patry 2023-04-24 17:14:35 +02:00 committed by Arthur Cohen
parent 1ff234bffd
commit fb3eb13f0f
2 changed files with 39 additions and 4 deletions
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29
libgrust/libproc_macro/proc_macro.cc
View File

@ -21,3 +21,32 @@
// <http://www.gnu.org/licenses/>.
#include "proc_macro.h"
namespace ProcMacro {
Procmacro
Procmacro::make_derive (const char *trait_name, const char **attributes,
std::uint64_t size, CustomDeriveMacro macro)
{
ProcmacroPayload payload;
payload.custom_derive = {trait_name, attributes, size, macro};
return {CUSTOM_DERIVE, payload};
}
Procmacro
Procmacro::make_attribute (const char *name, AttributeMacro macro)
{
ProcmacroPayload payload;
payload.attribute = {name, macro};
return {ATTR, payload};
}
Procmacro
Procmacro::make_bang (const char *name, BangMacro macro)
{
ProcmacroPayload payload;
payload.bang = {name, macro};
return {BANG, payload};
}
} // namespace ProcMacro

14
libgrust/libproc_macro/proc_macro.h
View File

@ -42,9 +42,9 @@ using BangMacro = TokenStream (*) (TokenStream);
struct CustomDerivePayload
{
// TODO: UTF-8 function name
char *trait_name;
const char *trait_name;
// TODO: UTF-8 attributes
char **attributes;
const char **attributes;
std::uint64_t attr_size;
CustomDeriveMacro macro;
};
@ -52,13 +52,13 @@ struct CustomDerivePayload
struct AttrPayload
{
// TODO: UTF-8 function name
char *name;
const char *name;
AttributeMacro macro;
};
struct BangPayload
{
char *name;
const char *name;
BangMacro macro;
};
}
@ -81,6 +81,12 @@ struct Procmacro
{
ProcmacroTag tag;
ProcmacroPayload payload;
public:
Procmacro make_derive (const char *trait_name, const char **attribute,
std::uint64_t size, CustomDeriveMacro macro);
Procmacro make_attribute (const char *name, AttributeMacro macro);
Procmacro make_bang (const char *name, BangMacro macro);
};
} // namespace ProcMacro