atom: pull revision from version object

Author: radhermit

src/pkgcraft/atom/base.pyx

@@ -104,11 +104,9 @@ cdef class Cpv:
         >>> a.revision
         '0'
         """
-        c_str = C.pkgcraft_atom_revision(self.ptr)
-        if c_str is not NULL:
-            s = c_str.decode()
-            C.pkgcraft_str_free(c_str)
-            return s
+        version = self.version
+        if version is not None:
+            return version.revision
         return None
 
     @property
@@ -342,7 +340,7 @@ cdef class Atom(Cpv):
         version = self.version
         if version is not None:
             return version.op
-        return version
+        return None
 
     @property
     def slot(self):

src/pkgcraft/pkgcraft_c.pxd

@@ -238,14 +238,6 @@ cdef extern from "pkgcraft.h":
     # The arguments must be valid Restrict and Atom pointers.
     bool pkgcraft_atom_restrict_matches(Atom *atom, Restrict *r)
 
-    # Return an atom's revision, e.g. the atom "=cat/pkg-1-r2" has a revision of "2".
-    #
-    # Returns NULL on nonexistence.
-    #
-    # # Safety
-    # The argument must be a non-null Atom pointer.
-    char *pkgcraft_atom_revision(Atom *atom)
-
     # Return an atom's slot, e.g. the atom "=cat/pkg-1-r2:3" has a slot of "3".
     #
     # Returns NULL on nonexistence.