def _native_repr_tree(self, node, indent, _done=None):
"""recursive method for the native tree representation"""
from _ast import Load as _Load, Store as _Store, Del as _Del
from _ast import AST as Node
if _done is None:
_done = set()
if node in _done:
self._string += '\nloop in tree: %r (%s)' % (
node, getattr(node, 'lineno', None))
return
_done.add(node)
self._string += '\n' + indent + '<%s>' % node.__class__.__name__
indent += self.indent
if not hasattr(node, '__dict__'):
self._string += '\n' + self.indent + " ** node has no __dict__ " + str(node)
return
node_dict = node.__dict__
if hasattr(node, '_attributes'):
for a in node._attributes:
attr = node_dict[a]
if attr is None:
continue
if a in ("lineno", "col_offset") and not self.lineno:
continue
self._string += '\n' + indent + a + " = " + repr(attr)
for field in node._fields or ():
attr = node_dict[field]
if attr is None:
continue
if isinstance(attr, list):
if not attr:
continue
self._string += '\n' + indent + field + ' = ['
for elt in attr:
self._native_repr_tree(elt, indent, _done)
self._string += '\n' + indent + ']'
continue
if isinstance(attr, (_Load, _Store, _Del)):
continue
if isinstance(attr, Node):
self._string += '\n' + indent + field + " = "
self._native_repr_tree(attr, indent, _done)
else:
self._string += '\n' + indent + field + " = " + repr(attr)
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