From 3d57e14df7ba5f14a634295caf3b2e60da50bfe2 Mon Sep 17 00:00:00 2001 From: James Taylor Date: Fri, 6 Sep 2019 16:31:13 -0700 Subject: Remove windows python distribution from repo and add requirements.txt --- python/jinja2/visitor.py | 87 ------------------------------------------------ 1 file changed, 87 deletions(-) delete mode 100644 python/jinja2/visitor.py (limited to 'python/jinja2/visitor.py') diff --git a/python/jinja2/visitor.py b/python/jinja2/visitor.py deleted file mode 100644 index ba526df..0000000 --- a/python/jinja2/visitor.py +++ /dev/null @@ -1,87 +0,0 @@ -# -*- coding: utf-8 -*- -""" - jinja2.visitor - ~~~~~~~~~~~~~~ - - This module implements a visitor for the nodes. - - :copyright: (c) 2017 by the Jinja Team. - :license: BSD. -""" -from jinja2.nodes import Node - - -class NodeVisitor(object): - """Walks the abstract syntax tree and call visitor functions for every - node found. The visitor functions may return values which will be - forwarded by the `visit` method. - - Per default the visitor functions for the nodes are ``'visit_'`` + - class name of the node. So a `TryFinally` node visit function would - be `visit_TryFinally`. This behavior can be changed by overriding - the `get_visitor` function. If no visitor function exists for a node - (return value `None`) the `generic_visit` visitor is used instead. - """ - - def get_visitor(self, node): - """Return the visitor function for this node or `None` if no visitor - exists for this node. In that case the generic visit function is - used instead. - """ - method = 'visit_' + node.__class__.__name__ - return getattr(self, method, None) - - def visit(self, node, *args, **kwargs): - """Visit a node.""" - f = self.get_visitor(node) - if f is not None: - return f(node, *args, **kwargs) - return self.generic_visit(node, *args, **kwargs) - - def generic_visit(self, node, *args, **kwargs): - """Called if no explicit visitor function exists for a node.""" - for node in node.iter_child_nodes(): - self.visit(node, *args, **kwargs) - - -class NodeTransformer(NodeVisitor): - """Walks the abstract syntax tree and allows modifications of nodes. - - The `NodeTransformer` will walk the AST and use the return value of the - visitor functions to replace or remove the old node. If the return - value of the visitor function is `None` the node will be removed - from the previous location otherwise it's replaced with the return - value. The return value may be the original node in which case no - replacement takes place. - """ - - def generic_visit(self, node, *args, **kwargs): - for field, old_value in node.iter_fields(): - if isinstance(old_value, list): - new_values = [] - for value in old_value: - if isinstance(value, Node): - value = self.visit(value, *args, **kwargs) - if value is None: - continue - elif not isinstance(value, Node): - new_values.extend(value) - continue - new_values.append(value) - old_value[:] = new_values - elif isinstance(old_value, Node): - new_node = self.visit(old_value, *args, **kwargs) - if new_node is None: - delattr(node, field) - else: - setattr(node, field, new_node) - return node - - def visit_list(self, node, *args, **kwargs): - """As transformers may return lists in some places this method - can be used to enforce a list as return value. - """ - rv = self.visit(node, *args, **kwargs) - if not isinstance(rv, list): - rv = [rv] - return rv -- cgit v1.2.3