pkg/objc: selectors

build.zig

@@ -195,12 +195,12 @@ fn addDeps(
     step.addPackage(imgui.pkg);
     step.addPackage(glfw.pkg);
     step.addPackage(libuv.pkg);
-    step.addPackage(objc.pkg);
     step.addPackage(stb_image_resize.pkg);
     step.addPackage(utf8proc.pkg);
 
     // Mac Stuff
     if (step.target.isDarwin()) {
+        step.addPackage(objc.pkg);
         step.addPackage(macos.pkg);
         _ = try macos.link(b, step, .{});
     }

pkg/objc/main.zig

@@ -1,5 +1,6 @@
 pub const c = @import("c.zig");
 pub usingnamespace @import("class.zig");
+pub usingnamespace @import("sel.zig");
 
 test {
     @import("std").testing.refAllDecls(@This());

pkg/objc/sel.zig

@@ -0,0 +1,25 @@
+const std = @import("std");
+const c = @import("c.zig");
+
+pub const Sel = struct {
+    value: c.SEL,
+
+    /// Registers a method with the Objective-C runtime system, maps the
+    /// method name to a selector, and returns the selector value.
+    pub fn registerName(name: [:0]const u8) Sel {
+        return Sel{
+            .value = c.sel_registerName(name.ptr),
+        };
+    }
+
+    /// Returns the name of the method specified by a given selector.
+    pub fn getName(self: Sel) [:0]const u8 {
+        return std.mem.sliceTo(c.sel_getName(self.value), 0);
+    }
+};
+
+test {
+    const testing = std.testing;
+    const sel = Sel.registerName("yo");
+    try testing.expectEqualStrings("yo", sel.getName());
+}