Working inheritance #68

crates/codegen/src/class_decl.rs

@@ -142,7 +142,9 @@ pub fn class_decl(
     for mut method in methods {
         match method.item.visibility {
             Visibility::Public => {
-                gen_method_point(&method.item, ctx, cg);
+                if !method.item.is_override {
+                    gen_method_point(&method.item, ctx, cg);
+                }
 
                 method.item.name.0.insert_str(0, "__m_");
             }
@@ -271,7 +273,9 @@ impl GenRust
         cg.addln(");");
 
         if self.2 {
-            cg.add("this._super._m_oop.0 = &Self::__SUPER_V_TABLE as *const *const std::ffi::c_void;");
+            cg.add_indentedln(
+                "this._super._m_oop.0 = &Self::__SUPER_V_TABLE as *const *const std::ffi::c_void;",
+            );
         }
 
         cg.add_indentedln("this");

mist-test/src/items/class_test.mist

@@ -1,62 +1,29 @@
-pub class Counter {
-    pub count i32;
-
-    pub constructor(start i32) {
-        self.count = start;
-    }
-
-    pub fn increment(*mut self) {
-        self.count++;
-    }
-
-    pub fn get(*self) i32 {
-        self.count
-    }
-}
-
-pub fn test_class_create() {
-    let c = Counter::new(0);
-    assert_eq!(c.get(), 0);
-}
-
-pub fn test_class_method() {
-    let mut c = Counter::new(5);
-    c.increment();
-    assert_eq!(c.get(), 6);
-}
-
-pub fn test_class_field_access() {
-    let c = Counter::new(42);
-    assert_eq!(c.count, 42);
-}
-
-class NamedCounter : Counter {
+pub class Animal {
     pub name String;
 
-    pub constructor(start i32, name String) {
-        self._super = Counter::new(start);
-
-        self.name = name;
+    constructor() {
+        self.name = "Rex".to_string();
     }
 
-    pub fn get_name(*self) String {
-        self.name.clone()
-    }
-
-    pub override fn increment(*mut self) {
-        println!("OK!!");
+    pub fn speak(*self) {
+        println!("Unknown");
     }
 }
 
-pub fn test_class_inherit() {
-    let nc = NamedCounter::new(10, "test".to_string());
-    assert_eq!(nc.get_name(), "test");
-    assert_eq!(nc.count, 10);
+pub class Dog : Animal {
+    constructor() {
+        unsafe {
+            std::ptr::write(&mut self._super, Animal::new());
+        }
+    }
+
+    pub override fn speak(*self) {
+        println!("Woof!");
+    }
 }
 
 pub fn run_tests() {
-    test_class_create();
-    test_class_method();
-    test_class_field_access();
-    test_class_inherit();
+    let dawg = Dog::new();
+
+    dawg.speak();
 }