[gobject-introspection] scanner: Ignore #defines starting with _

[Colin Walters <walters src gnome org>]

commit 7f10346a378b2f33bf87730cce43c8b85e565952
Author: Colin Walters <walters verbum org>
Date:   Fri Apr 13 15:28:49 2012 -0400

    scanner: Ignore #defines starting with _
    
    This matches our behavior for symbols (and we should probably fix this
    more globally...I think we still scan _-prefixed enums).
    
    Noticed from gudev which had #define _GUDEV_INSIDE_H 1
    
    https://bugzilla.gnome.org/show_bug.cgi?id=674072

 giscanner/transformer.py |    3 +++
 tests/scanner/regress.h  |    6 +++++-
 2 files changed, 8 insertions(+), 1 deletions(-)
---
diff --git a/giscanner/transformer.py b/giscanner/transformer.py
index b96e141..e4938b9 100644
--- a/giscanner/transformer.py
+++ b/giscanner/transformer.py
@@ -710,6 +710,9 @@ raise ValueError."""
         return ast.Return(typeval)
 
     def _create_const(self, symbol):
+        if symbol.ident.startswith('_'):
+            return None
+
         # Don't create constants for non-public things
         # http://bugzilla.gnome.org/show_bug.cgi?id=572790
         if (symbol.source_filename is None or
diff --git a/tests/scanner/regress.h b/tests/scanner/regress.h
index 635ea7b..b55c463 100644
--- a/tests/scanner/regress.h
+++ b/tests/scanner/regress.h
@@ -888,7 +888,6 @@ void regress_test_struct_fixed_array_frob (RegressTestStructFixedArray *str);
 void regress_has_parameter_named_attrs (int        foo,
                                         gpointer   attributes);
 
-
 typedef struct {
   int dummy;
   struct {
@@ -899,4 +898,9 @@ typedef struct {
   double dummy2;
 } RegressLikeGnomeKeyringPasswordSchema;
 
+/* Ensure we ignore symbols that start with _; in particular we don't
+ * want to issue a namespace warning.
+ */
+#define _DONTSCANTHIS 1
+
 #endif /* __GITESTTYPES_H__ */