Add new annotations for property accessors

We introduce two new annotations:

  - (set-property PROPERTY_NAME)
  - (get-property PROPERTY_NAME)

These annotations are valid inside function blocks for methods on
objects and interfaces, and define whether a function is a property
accessor, e.g.:

    /**
     * gtk_widget_set_name: (set-property name)
     * @self: ...
     * @name: ...
     *
     * ...
     */

    /**
     * gtk_widget_get_name: (get-property name)
     * @self: ...
     *
     * ...
     *
     * Returns: ...
     */

The annotations are transformed into the GIR data as attributes:

 - glib:set-property="PROPERTY_NAME"
 - glib:get-property="PROPERTY_NAME"

The underlying typelib data has had flags for setter and getter
functions for a while, but they have never been plugged into the GIR
data or the introspection scanner. Now they are; you can retrieve the
GIPropertyInfo from a GIFunctionInfo that has the GI_FUNCTION_IS_SETTER
or GI_FUNCTION_IS_GETTER flags set.

Fixes: #13

1 files changed, 4 insertions, 0 deletions

diff --git a/giscanner/girwriter.py b/giscanner/girwriter.py
index d276e923..9551f18f 100644
--- a/giscanner/girwriter.py
+++ b/giscanner/girwriter.py
@@ -224,6 +224,10 @@ class GIRWriter(XMLWriter):
             attrs.append(('shadows', func.shadows))
         if func.moved_to is not None:
             attrs.append(('moved-to', func.moved_to))
+        if func.set_property is not None:
+            attrs.append(('glib:set-property', func.set_property))
+        if func.get_property is not None:
+            attrs.append(('glib:get-property', func.get_property))
         self._write_callable(func, tag_name, attrs)
 
     def _write_function_macro(self, macro):