[seed] [modules] Begin seed-modules.h, filled with argument-checking macros, etc

[Tim Horton <hortont src gnome org>]

commit 614ae012babc0da5dd7d6d0474e7f9ea5d9adbec
Author: Tim Horton <hortont svn gnome org>
Date:   Sat Jul 4 03:13:30 2009 -0400

    [modules] Begin seed-modules.h, filled with argument-checking macros, etc

 modules/Makefile.am   |    2 ++
 modules/seed-module.h |   19 +++++++++++++++++++
 2 files changed, 21 insertions(+), 0 deletions(-)
---
diff --git a/modules/Makefile.am b/modules/Makefile.am
index 3701ce9..766ea24 100644
--- a/modules/Makefile.am
+++ b/modules/Makefile.am
@@ -1 +1,3 @@
 SUBDIRS = example sqlite canvas Multiprocessing readline os sandbox dbus libxml cairo gtkbuilder gettext mpfr
+
+EXTRA_DIST = seed-module.h
diff --git a/modules/seed-module.h b/modules/seed-module.h
new file mode 100644
index 0000000..1055d5d
--- /dev/null
+++ b/modules/seed-module.h
@@ -0,0 +1,19 @@
+#ifndef _SEED_MODULE_H_
+#define _SEED_MODULE_H_
+
+#include <seed.h>
+
+#define PLURALIZE_ARG_COUNT(c) \
+	((c == 1) ? #c " argument" : #c " arguments")
+
+#define CHECK_ARG_COUNT(name, argnum) \
+	if ( argument_count != argnum ) \
+	{ \
+		char * msg; \
+		asprintf(&msg, "%s expected %s got %Zd", name, \
+		         PLURALIZE_ARG_COUNT(argnum), argument_count); \
+		seed_make_exception (ctx, exception, "ArgumentError", "%s", msg); \
+		return seed_make_undefined (ctx); \
+	}
+
+#endif