Class method AST and grammar

parser/src/ast.rs

@@ -89,6 +89,15 @@ pub struct ClassConstructor {
     pub body: Block,
 }
 
+#[derive(Debug, Clone, Serialize)]
+pub struct ClassMethod {
+    export: bool,
+    name: String,
+    params: ParamList,
+    return_type: TypeExpr,
+    body: Block,
+}
+
 #[derive(Debug, Clone, Serialize)]
 pub enum Postfix {
     FieldAccess(String),

parser/src/grammar.pest

@@ -26,7 +26,13 @@ class_constructor = {
 
 class_fields = { var_decl_statement* }
 
-class_methods = { function_decl* }
+class_methods = { method* }
+
+self_param = { "self" ~ mutable? ~ deref_px? }
+
+method = {
+    export? ~ type_expr ~ identifier ~ "(" ~ self_param? ~ param_list? ~ ")" ~ block
+}
 
 class_decl = {
     "class" ~ identifier ~ "{" ~ class_fields ~ class_constructor ~ class_methods ~ "}"

test/src/main.mist

@@ -4,9 +4,13 @@ class MyClass {
     public constructor(str* name) {
         self.message = format!("Hello {}!", name);
     }
+
+    public void greet(self*) {
+        println!("{}", self.message);
+    }
 }
 
 void main() {
     var my_class = new MyClass("World");
-    println!("{}", my_class.message);
+    my_class.greet();
 }