AST and codegen

parser/src/ast.rs

@@ -74,6 +74,7 @@ pub enum TopLevelKind {
     ModAttribute,
     Import(Path),
     Mod(Identifier),
+    ImplDecl(ImplDecl),
     EnumDecl {
         visibility: Visibility,
         name: Identifier,
@@ -192,6 +193,14 @@ pub enum Statement {
     Continue,
 }
 
+#[derive(Debug, Clone, Serialize)]
+pub struct ImplDecl {
+    pub generics: Generics,
+    pub target: TypeExpr,
+    pub trait_: Option<TypeExpr>,
+    pub methods: Vec<FunctionDecl>,
+}
+
 #[derive(Debug, Clone, Serialize)]
 pub struct VarDecl {
     pub mutable: bool,