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The struct used to store the types (rb_data_type_t) contains a "data" field where we can store whatever we want. I use that field to store a pointer to the corresponding destroy function. For example notmuch_rb_database_type contains a pointer to notmuch_database_destroy. I cast that pointer as a notmuch_status_t (func*)(void *) and call that function passing the internal object (e.g. notmuch_database_t). Using the rb_data_type_t data we can call the correct notmuch destroy function. Therefore this: ret = ((notmuch_status_t (*)(void *)) type->data) (nm_object); Is effectively the same as this: ret = notmuch_database_destroy (database); The advantage of doing it this way is that much less code is necesary since each rb_data_type_t has the corresponding destroy function stored in it. Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com> |
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| .. | ||
| .gitignore | ||
| database.c | ||
| defs.h | ||
| directory.c | ||
| extconf.rb | ||
| filenames.c | ||
| init.c | ||
| message.c | ||
| messages.c | ||
| query.c | ||
| rdoc.sh | ||
| README | ||
| status.c | ||
| tags.c | ||
| thread.c | ||
| threads.c | ||
To build the the notmuch ruby extension, run the following commands from the *top level* notmuch source directory: % ./configure % make ruby-bindings The generic documentation about building notmuch also applies.