Fix for expression

schala-lang/language/src/parser.rs

@@ -160,10 +160,12 @@ fn for_expr(text: &str) -> ParseResult<ExpressionKind> {
     map(enumerator, |e| vec![e]),
     delimited(tag("{"), enumerators, tag("}"))
   ));
+  context("For expression",
   preceded(tag("for"),
-    map(tuple((en, for_expr_body)),
+  cut(
+    map(tuple((ws(en), for_expr_body)),
     |(enumerators, body)| ExpressionKind::ForExpression { enumerators, body: Box::new(body) }
-  ))(text)
+  ))))(text)
 }
 
 
@@ -174,16 +176,17 @@ fn enumerators(text: &str) -> ParseResult<Vec<Enumerator>> {
 
 fn enumerator(text: &str) -> ParseResult<Enumerator> {
   map(
-    tuple((identifier, tag("<-"), expression)),
+    tuple((ws(identifier), ws(tag("<-")), ws(expression))),
   |(id, _, generator)| Enumerator { id, generator }
   )(text)
 }
 
 fn for_expr_body(text: &str) -> ParseResult<ForBody> {
+  context("For expression body",
   alt((
-    map(preceded(tag("return"), expression), ForBody::MonadicReturn),
-    map(delimited(tag("{"), block, tag("}")), ForBody::StatementBlock),
-  ))(text)
+    map(preceded(ws(tag("return")), expression), ForBody::MonadicReturn),
+    map(block, ForBody::StatementBlock),
+  )))(text)
 }
 
 fn invocation_argument(text: &str) -> ParseResult<InvocationArgument> {