better parser errors

error_test/parser/bracket_errors.sui

@@ -1,47 +1,50 @@
 # Bracket and parenthesis mismatch errors
 
 # Missing closing parenthesis in function call
-fn test() -> int
+fn test() -> int do
     let f = lambda(x) x
     f(5
     42
+end
 
 # Missing closing bracket in array access
-fn test() -> int
+fn test() -> int do
     let arr = [1, 2, 3]
     arr[0
     42
+end
+
+struct Point
+   x: int,
+   y: int
+end
 
 # Missing closing brace in struct literal
-fn test() -> int
-    struct Point
-        x: int
-        y: int
-    end
+fn test() -> int do 
     let p = Point { x: 5, y: 10
     p.x
+end
 
 # Missing closing parenthesis in tuple
-fn test() -> int
+fn test() -> int do
     let t = (1, 2, 3
     42
+end
 
 # Missing closing angle bracket in generic
-fn test() -> int
+fn test() -> int do
     let v = Vec<int
     42
+end
 
 # Extra closing parenthesis
-fn test() -> int
+fn test() -> int do
     let x = (5))
     x
-
-# Mismatched brackets
-fn test() -> int
-    let x = [1, 2, 3}
-    x[0]
+end
 
 # Missing opening parenthesis in expression
-fn test() -> int
+fn test() -> int do
     let x = 5 + 3)
-    x
+    x
+end