Split most of the objc_msgSend() wrappers into a C header file for convenience. The NSRect functions require special handling because of Apple stupidities that will be discussed when I get to that.

1 files changed, 61 insertions, 0 deletions

diff --git a/darwintest/objc_darwin.h b/darwintest/objc_darwin.h
new file mode 100644
index 0000000..85bf0b4
--- /dev/null
+++ b/darwintest/objc_darwin.h
@@ -0,0 +1,61 @@
+/* 28 february 2014 */
+
+/*
+This includes all Objective-C runtime headers for convenience. It also creates wrappers around objc_msgSend() out of necessity.
+
+cgo doesn't support calling variable argument list C functions, so objc_msgSend() cannot be called directly.
+
+Furthermore, Objective-C selectors work by basically sending the arguments to objc_msgSend() verbatim across the wire. This basically means we're stuck making wrapper functions for every possible argument list. What fun!
+
+The format should be self-explanatory.
+*/
+
+#include <objc/message.h>
+#include <objc/objc.h>
+#include <objc/runtime.h>
+
+/* TODO this HAS to be unsafe, but <objc/NSObjCRuntime.h> not found?! */
+typedef unsigned long NSUInteger;
+
+inline id objc_msgSend_noargs(id obj, SEL sel)
+{
+	return objc_msgSend(obj, sel);
+}
+
+#define m1(name, type1) \
+	inline id objc_msgSend_ ## name (id obj, SEL sel, type1 a) \
+	{ \
+		return objc_msgSend(obj, sel, a); \
+	}
+
+#define m2(name, type1, type2) \
+	inline id objc_msgSend_ ## name (id obj, SEL sel, type1 a, type2 b) \
+	{ \
+		return objc_msgSend(obj, sel, a, b); \
+	}
+
+#define m3(name, type1, type2, type3) \
+	inline id objc_msgSend_ ## name (id obj, SEL sel, type1 a, type2 b, type3 c) \
+	{ \
+		return objc_msgSend(obj, sel, a, b, c); \
+	}
+
+#define m4(name, type1, type2, type3, type4) \
+	inline id objc_msgSend_ ## name (id obj, SEL sel, type1 a, type2 b, type3 c, type4 d) \
+	{ \
+		return objc_msgSend(obj, sel, a, b, c, d); \
+	}
+
+m1(str, char *)		/* TODO Go string? */
+m1(id, id)
+/* TODO NSRect */
+m1(sel, SEL)
+m1(uint, NSUInteger)
+
+m2(id_id, id, id)
+
+m3(id_id_id, id, id, id)
+m3(sel_id_bool, SEL, id, BOOL)
+
+/* TODO NSRect */
+m4(id_sel_id_id, id, SEL, id, id)