def visit(self, tree):
CollectTokenDefs_Visitor(self.tokendefs).visit(tree)
SVisitor.visit(self, tree)
for tokendef in self.tokendefs.itervalues():
self._simplify_token(tokendef)
return self.tokendefs
def _visit(self, tree):
"_visit simplifies the tree as much as possible"
# visit until nothing left to change (not the most efficient, but good enough since it's only the grammar)
while SVisitor._visit(self, tree):
pass