Super VTable generation

crates/parser/src/ast/top_level.rs

@@ -94,6 +94,7 @@ pub struct ClassConstructor {
 #[derive(Debug, Clone, Serialize)]
 pub struct FunctionDecl {
     pub visibility: Visibility,
+    pub is_override: bool,
     pub name: Identifier,
     pub generics: GenericsDecl,
     pub params: ParamList,

crates/parser/src/grammar.pest

@@ -32,6 +32,7 @@ keyword = {
   | "loop"
   | "fn"
   | "unsafe"
+  | "override"
 }
 
 identifier = @{
@@ -324,8 +325,10 @@ trait_decl = {
 // FUNCTIONS
 // ======================================================
 
+override_kw = { "override" }
+
 function_decl = {
-    visibility? ~ "fn" ~ identifier ~ generics_decl? ~ "(" ~ method_args ~ ")" ~ type_expr? ~ (block | semicolon)
+    visibility? ~ override_kw? ~ "fn" ~ identifier ~ generics_decl? ~ "(" ~ method_args ~ ")" ~ type_expr? ~ (block | semicolon)
 }
 
 // ======================================================

crates/parser/src/parser/items/function.rs

@@ -13,6 +13,7 @@ impl<'a> TryFrom<pest::iterators::Pair<'a, Rule>> for FunctionDecl {
         ast_ensure!(pair, Rule::function_decl => {
         let mut inner = pair.into_inner();
             let visibility = Visibility::try_from(&mut inner);
+            let is_override: AstResult<bool> = Ok(listen_rule(&mut inner, Rule::override_kw));
             let name = Identifier::try_from(inner.next().unwrap());
 
             let generics = consume_rule(&mut inner, Rule::generics_decl)
@@ -66,6 +67,7 @@ impl<'a> TryFrom<pest::iterators::Pair<'a, Rule>> for FunctionDecl {
 
             ast_expr!(Self {
                 visibility: visibility,
+                is_override: is_override,
                 return_type: return_type,
                 name: name,
                 generics: generics,