Fix bug: default 'except_' should appear at last

hsfzxjy · Feb 7, 2021 · 9091565 · 9091565
1 parent 73c228d
commit 9091565
Showing 1 changed file with 7 additions and 0 deletions.
diff --git a/lambdex/compiler/rules.py b/lambdex/compiler/rules.py
@@ -287,6 +287,7 @@ def r_try(node: ast.Subscript, ctx: Context, clauses: list):
  handlers = []
  orelse_body = []
  final_body = []
+ default_except_clause = None
  for clause in clauses[1:]:
  if clause.name == 'except_':
  ctx.assert_(
@@ -298,8 +299,14 @@ def r_try(node: ast.Subscript, ctx: Context, clauses: list):
  if clause.no_head():
  # bare except
  type_ = name = None
+ default_except_clause = clause
  else:
  # except with capturing
+ ctx.assert_(
+ default_except_clause is None,
+ "default 'except_' must be last",
+ lambda: default_except_clause.node,
+ )
  ctx.assert_single_head(clause)
  type_, name = check_as(ctx, clause.unwrap_head(), ast.Gt, rhs_is_identifier=True)