remove redundant token

crates/parser/src/lib.rs

@@ -335,7 +335,7 @@ fn expr_parser() -> impl Parser<Token, Vec<Spanned<Expr>>, Error = Simple<Token>
                 )
             });
 
-        let match_ = just(Token::KwCase)
+        let case = just(Token::KwCase)
             .ignore_then(expr.clone())
             .then_ignore(just(Token::KwOf))
             .then(
@@ -350,7 +350,6 @@ fn expr_parser() -> impl Parser<Token, Vec<Spanned<Expr>>, Error = Simple<Token>
                     .ignore_then(just(Token::KwElse))
                     .ignore_then(expr.clone())
             )
-            .then_ignore(just(Token::KwEnd))
             .map(|((expr, cases), default)| {
                 (
                     Expr::Case {
@@ -370,7 +369,7 @@ fn expr_parser() -> impl Parser<Token, Vec<Spanned<Expr>>, Error = Simple<Token>
             .or(return_)
             .or(do_block)
             .or(if_block)
-            .or(match_)
+            .or(case)
             .or(pipeline)
     }).labelled("expression");
 

crates/parser/src/types.rs

@@ -6,7 +6,7 @@ pub enum Typehint {
     Single(String), // e.g. `int`, `bool`, `string`
     Tuple(Vec<Spanned<Self>>), // e.g. `(int, bool)`
     Vector(Box<Spanned<Self>>), // e.g. `[int]`
-    Function(Vec<Spanned<Self>>, Box<Spanned<Self>>), // e.g. `(a: int, b: bool) -> string`, `(b: int) -> [bool]`
+    Function(Vec<Spanned<Self>>, Box<Spanned<Self>>), // e.g. `|A: int, B: bool| -> string`, `|A: int| -> [bool]`
 }
 
 #[derive(Clone, Debug)]

example/factorial.hz

@@ -2,7 +2,6 @@ fun factorial (n: int) : int = do
     case n of
         | 0 -> return 1
         | else return n * factorial(n - 1)
-    end
 end
 
 fun main : void = do

example/fibonacci.hz

@@ -2,8 +2,7 @@ fun fib (n: int): int = do
     case n of
         | 1 -> return 1
         | 2 -> return 1
-        | else -> return fib(n - 1) + fib(n - 2)
+        | else return fib(n - 1) + fib(n - 2)
-    end
 end
 
 fun main: void = do

example/rule110.hz

@@ -2,7 +2,6 @@ fun print_single (cell: bool): void = do
     case cell of
         | true -> @write("█")
         | else @write(" ")
-    end
 end
 
 fun print_vec (state: vec_bool) (length: int) (curr: int): void = do
@@ -82,7 +81,6 @@ fun next (state: vec_bool) (pointer: int): bool = do
                 return true
             end
         | else return false
-    end
 end
 
 fun iter (state: vec_bool) (for: int) (curr: int): void = do