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add Node.visit() method

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This commit is contained in:
Josh Holtrop 2011-08-30 13:35:51 -04:00
parent ba80f5d9f7
commit 854b82e088
1 changed files with 4 additions and 0 deletions
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4
parser/nodes.py
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@ -4,6 +4,10 @@ class Node(object):
self.children = children self.children = children
if self.children is None: if self.children is None:
self.children = [] self.children = []
def visit(self, callback, *args):
callback(self, *args)
for c in self.children:
c.visit(callback, *args)
class StatementNode(Node): class StatementNode(Node):
def __init__(self, children=None): def __init__(self, children=None):