tryExpr :: Parser Expression
tryExpr = do
  keyWord "try"
  body <- expression
  keyWord "catch"
  exception <- parens identifier
  handler <- expression
  return $ TryExpr body exception handler

-- | RaiseExpr ::= raise Expression
tryExpr :: Parser Expression
tryExpr = do
  keyWord "try"
  body <- expression
  keyWord "catch"
  exception <- parens identifier
  handler <- expression
  return $ TryExpr body exception handler

-- | RaiseExpr ::= raise Expression
tryExpr = do
  keyWord "try"
  body <- expression
  keyWord "catch"
  exception <- parens identifier
  handler <- expression
  return $ TryExpr body exception handler

-- | RaiseExpr ::= raise Expression