More combine

schala-lang/language/src/parser.rs

@@ -217,14 +217,16 @@ fn expression_kind(text: &str) -> ParseResult<ExpressionKind> {
 mod thing {
   use crate::ast::*;
   use crate::builtin::Builtin;
-  use combine::{many1, Parser, sep_by};
-  use combine::parser::char::{letter, space};
 
-  pub fn perform_parsing(input: &str) -> () {
-    let word = many1(letter());
-    let mut parser = sep_by(word, space());
-    let result = parser.parse(input);
-    result
+  use combine::parser::range::{range, take_while1};
+  use combine::parser::repeat::sep_by;
+  use combine::*;
+
+  pub fn perform_parsing(input: &str) -> String {
+    let identifier = take_while1(|c: char| c.is_alphabetic());
+    let mut parser = sep_by(identifier, range(", "));
+    let result: Result<(Vec<&str>, &str), _> = parser.easy_parse(input);
+    format!("{:?}", result)
   }
 }
 
@@ -232,5 +234,5 @@ mod thing {
 pub fn perform_parsing(input: &str) -> Result<String, String> {
 //  let output = expression_kind(input)
   let output = thing::perform_parsing(input);
-  Ok(format!("{:?}", output))
+  Ok(output)
 }