[seed] [modules] DEFINE_ENUM_MEMBER macro

[Tim Horton <hortont src gnome org>]

commit 15e99ed21d8833d0663062ae137eb59d5fb2bd3c
Author: Tim Horton <hortont svn gnome org>
Date:   Sat Jul 4 03:28:55 2009 -0400

    [modules] DEFINE_ENUM_MEMBER macro

 modules/seed-module.h |   11 +++++++++++
 1 files changed, 11 insertions(+), 0 deletions(-)
---
diff --git a/modules/seed-module.h b/modules/seed-module.h
index 1055d5d..42f2402 100644
--- a/modules/seed-module.h
+++ b/modules/seed-module.h
@@ -3,9 +3,14 @@
 
 #include <seed.h>
 
+// Pluralize an argument count ("1 argument", "2 arguments", etc), given an int
 #define PLURALIZE_ARG_COUNT(c) \
 	((c == 1) ? #c " argument" : #c " arguments")
 
+// Check that the required number of arguments were passed into a seed callback.
+// If this is not true, raise an exception and return null.
+// This requires the callback to use "argument_count", "ctx", and "exception"
+// as the names of the various function arguments.
 #define CHECK_ARG_COUNT(name, argnum) \
 	if ( argument_count != argnum ) \
 	{ \
@@ -13,7 +18,13 @@
 		asprintf(&msg, "%s expected %s got %Zd", name, \
 		         PLURALIZE_ARG_COUNT(argnum), argument_count); \
 		seed_make_exception (ctx, exception, "ArgumentError", "%s", msg); \
+		g_free(msg); \
 		return seed_make_undefined (ctx); \
 	}
 
+// Defines a property on holder for the given enum member, with the given name
+#define DEFINE_ENUM_MEMBER(holder, name, val) \
+	seed_object_set_property(ctx, holder, name, \
+	                         seed_value_from_long(ctx, val, NULL))
+
 #endif