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Handle static inline GtkOrdering function

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The introspection scanner does not handle `static inline` functions:
they are not in the shared library, so cannot be dlsym() out of it; and
the `static` keyword tells g-ir-scanner to skip the function declaration
entirely.

We can trick the scanner into thinking the gtk_ordering_from_cmpfunc()
symbol is a real, public one, by declaring and defining a regular
function under the `__GI_SCANNER__` guard; the symbol does not appear
when actually building GTK, or any code using GTK, so we don't risk
collisions.
This commit is contained in:
Emmanuele Bassi 2021-03-04 22:58:05 +00:00
parent 90cf6bb686
commit 816383e9ef
2 changed files with 31 additions and 1 deletions
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11
gtk/gtkenums.h
View File

@ -548,7 +548,7 @@ typedef enum
* These values can be used with a `GCompareFunc`. However,
* a `GCompareFunc` is allowed to return any integer values.
* For converting such a value to a `GtkOrdering` value, use
* [func@Gtk.ordering_from_cmpfunc].
* [func@Gtk.Ordering.from_cmpfunc].
*/
typedef enum {
GTK_ORDERING_SMALLER = -1,
@ -556,6 +556,14 @@ typedef enum {
GTK_ORDERING_LARGER = 1
} GtkOrdering;
/* The GI scanner does not handle static inline functions, because
* of the `static` keyword; so we clip this out when parsing the
* header, and we replace it with a real function in gtksorter.c
* that only exists when parsing the source for introspection.
*/
#ifdef __GI_SCANNER__
GtkOrdering gtk_ordering_from_cmpfunc (int cmpfunc_result);
#else
/**
* gtk_ordering_from_cmpfunc:
* @cmpfunc_result: Result of a comparison function
@ -570,6 +578,7 @@ gtk_ordering_from_cmpfunc (int cmpfunc_result)
{
return (GtkOrdering) ((cmpfunc_result > 0) - (cmpfunc_result < 0));
}
#endif
/**
* GtkPageOrientation:

21
gtk/gtksorter.c
View File

@ -364,3 +364,24 @@ gtk_sorter_changed_with_keys (GtkSorter *self,
gtk_sorter_changed (self, change);
}
/* See the comment in gtkenums.h as to why we need to play
* games with the introspection scanner for static inline
* functions
*/
#ifdef __GI_SCANNER__
/**
* gtk_ordering_from_cmpfunc:
* @cmpfunc_result: Result of a comparison function
*
* Converts the result of a `GCompareFunc` like strcmp() to a
* `GtkOrdering` value.
*
* Returns: the corresponding `GtkOrdering`
**/
GtkOrdering
gtk_ordering_from_cmpfunc (int cmpfunc_result)
{
return (GtkOrdering) ((cmpfunc_result > 0) - (cmpfunc_result < 0));
}
#endif