| # coding: utf-8 |
| |
| """ |
| Exposes a class that represents a parsed (or compiled) template. |
| |
| """ |
| |
| |
| class ParsedTemplate(object): |
| |
| """ |
| Represents a parsed or compiled template. |
| |
| An instance wraps a list of unicode strings and node objects. A node |
| object must have a `render(engine, stack)` method that accepts a |
| RenderEngine instance and a ContextStack instance and returns a unicode |
| string. |
| |
| """ |
| |
| def __init__(self): |
| self._parse_tree = [] |
| |
| def __repr__(self): |
| return repr(self._parse_tree) |
| |
| def add(self, node): |
| """ |
| Arguments: |
| |
| node: a unicode string or node object instance. See the class |
| docstring for information. |
| |
| """ |
| self._parse_tree.append(node) |
| |
| def render(self, engine, context): |
| """ |
| Returns: a string of type unicode. |
| |
| """ |
| # We avoid use of the ternary operator for Python 2.4 support. |
| def get_unicode(node): |
| if type(node) is unicode: |
| return node |
| return node.render(engine, context) |
| parts = map(get_unicode, self._parse_tree) |
| s = ''.join(parts) |
| |
| return unicode(s) |
