Commit fbeec9d9 authored by Sven Gestegård Robertz's avatar Sven Gestegård Robertz
Browse files

sketch

parent 84c64434
......@@ -24,8 +24,49 @@ void labcomm_pragma_add_ref(struct labcomm_signature sig);
// One possible (pragma-type defined) semantic is that the latest type
// reference applies to the fields following it.
A pragma packet is (under the hood) a struct labcomm_encoder, so that we
can reuse the sample_type_encode() function for adding pragma fields.
// an example session
struct labcom_pragma_packet pp = labcomm_pragma_new(enc, some_type));
labcomm_pragma_add_ref(some_sig);
some_pragma_type_encode(pp, some_pragma_instance);
another_pragma_type_encode(pp, another_pragma_instance);
labcomm_pragma_send(pp, enc);
#define labcomm_pragma_add_field(some_pragma_sample_type, value) \
labcomm_encode_#some_pragma_sample_type, value)
int labcomm_encode_test_twoLines( struct labcomm_encoder *e,
test_twoLines *v)
{
return labcomm_internal_encode(e,
&labcomm_signature_test_twoLines,
(labcomm_enc oder_function) encode_test_twoLines,
v);
}
receiving:
alt 1. standard handlers, parameter pragma_type to handle function
-- this means adding a parameter to all handlers
(where null means not pragma)
alt 2. standard handlers, but separate register_pragma_handler function
use the handler context to store and communicate pragma-specific data.
-- this means that the decoder interface needs to be extended,
and that the handler context for pragmas need to be specified
(by labcomm)
1.
void handle_some_pragma(some_pragma *v, void *context, char * pragma_type);
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