diff mercurial/cext/parsers.c @ 42303:e240bec26626

rust-dirstate: add rust-cpython bindings to the new parse/pack functions

This allows for Python code to call `parse/pack_dirstate` transparently.

These bindings are heavy given the relatively simple task, as they are bound
to implementation details of both the C and Python code. They will be slimmed
down in future patches and eventually completely removed once more of the
dirstate code has been refactored/rewritten in Rust.

Both functions emulate the mutate-on-loop style of the Python and C
implementations by looping over changed items in the compatibility layer,
instead of at the core functions.

Differential Revision: https://phab.mercurial-scm.org/D6349

--- a/mercurial/cext/parsers.c	Mon May 06 22:48:09 2019 +0200
+++ b/mercurial/cext/parsers.c	Mon May 06 22:50:34 2019 +0200
@@ -671,6 +671,7 @@
 
 static void module_init(PyObject *mod)
 {
+	PyObject *capsule = NULL;
 	PyModule_AddIntConstant(mod, "version", version);
 
 	/* This module constant has two purposes.  First, it lets us unit test
@@ -687,6 +688,12 @@
 	manifest_module_init(mod);
 	revlog_module_init(mod);
 
+	capsule = PyCapsule_New(
+	    make_dirstate_tuple,
+	    "mercurial.cext.parsers.make_dirstate_tuple_CAPI", NULL);
+	if (capsule != NULL)
+		PyModule_AddObject(mod, "make_dirstate_tuple_CAPI", capsule);
+
 	if (PyType_Ready(&dirstateTupleType) < 0) {
 		return;
 	}