handle warnings; tag 0.2.1

Author: tiye

moon.mod.json

@@ -1,6 +1,6 @@
 {
   "name": "tiye/cirru-parser",
-  "version": "0.2.0",
+  "version": "0.2.1",
   "deps": {},
   "readme": "README.md",
   "repository": "https://github.com/Cirru/parser.mbt",

src/main/main.mbt

@@ -17,9 +17,10 @@ pub fn main_parser() -> Unit {
   match tree {
     Ok(tree) => {
       println(tree.to_json().stringify())
-      match (try? @json.parse(json_file)) {
-        Ok(json) => println(json.stringify())
-        Err(err) => println(err.to_string())
+      try @json.parse(json_file) catch {
+        err => println(err.to_string())
+      } noraise {
+        json => println(json.stringify())
       }
       // println(tree)
     }

src/parser.mbt

@@ -73,7 +73,7 @@ suberror CirruParseError String
 
 ///|
 /// display Cirru parse error
-pub fn to_string(self : CirruParseError) -> String {
+pub fn CirruParseError::to_string(self : Self) -> String {
   match self {
     CirruParseError(s) => s
   }

src/s_expr.mbt

@@ -13,7 +13,10 @@ pub fn format_to_lisp(xs : Array[Cirru]) -> String raise FormatError {
 
 ///|
 /// format single expression to Lisp-like code
-fn format_lispy_expr(self : Cirru, indent : Int) -> String raise FormatError {
+fn Cirru::format_lispy_expr(
+  self : Self,
+  indent : Int,
+) -> String raise FormatError {
   let empty_space = " "
   match self {
     List(xs) =>