Initial commit

mini-obj-c.c

@@ -0,0 +1,37 @@
+#include <stddef.h>
+#include <string.h>
+#include <stdio.h>
+
+#include "mini-obj-c.h"
+
+#define WARN(f, ...) fprintf(stderr, f "\n", ##__VA_ARGS__)
+
+MethodImplementation method_lookup(struct Class* class, const char* sel)
+{
+    for (; class; class = class->super) {
+        for (size_t i = 0; i < class->methods_count; ++i) {
+            auto entry = class->methods[i];
+            if (strcmp(entry.sel, sel) == 0) {
+                return entry.impl;
+            }
+        }
+    }
+    return nullptr;
+}
+
+struct Object* msg_send(struct Object* self, const char* sel)
+{
+    if (!self || !self->class) {
+        WARN("Invalid object");
+        return nullptr;
+    }
+
+    auto impl = method_lookup(self->class, sel);
+    if (impl) {
+        return impl(self);
+    } else {
+        WARN("Method '%s' not found for class '%s'", sel, self->class->name);
+        return nullptr;
+    }
+}
+