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transforms/unroll_loop: handle breaks in try and with blocks

This commit is contained in:
Sebastien Bourdeauducq 2014-09-26 19:20:56 +08:00
parent f332def3a2
commit 8852dd394e

View File

@ -15,21 +15,25 @@ def _count_stmts(node):
def _loop_breakable(node):
if isinstance(node, ast.Break):
return 1
elif isinstance(node, ast.Return):
return 2
elif isinstance(node, list):
return max(map(_loop_breakable, node), default=0)
if isinstance(node, list):
return any(map(_loop_breakable, node))
elif isinstance(node, (ast.Break, ast.Continue)):
return True
elif isinstance(node, ast.With):
return _loop_breakable(node.body)
elif isinstance(node, ast.If):
return max(_loop_breakable(node.body), _loop_breakable(node.orelse))
elif isinstance(node, (ast.For, ast.While)):
bb = _loop_breakable(node.body)
if bb == 1:
bb = 0
return max(bb, _loop_breakable(node.orelse))
return _loop_breakable(node.body) or _loop_breakable(node.orelse)
elif isinstance(node, ast.Try):
if (_loop_breakable(node.body)
or _loop_breakable(node.orelse)
or _loop_breakable(node.finalbody)):
return True
for handler in node.handlers:
if _loop_breakable(handler.body):
return True
return False
else:
return 0
return False
class _LoopUnroller(ast.NodeTransformer):