blob: 0055837bfedf5f0195ea2ba6482142634f43571f (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
|
# coding: utf-8
"""
Exposes a class that represents a parsed (or compiled) template.
This module is meant only for internal use.
"""
class ParsedTemplate(object):
def __init__(self):
"""
Arguments:
parse_tree: a list, each element of which is either--
(1) a unicode string, or
(2) a "rendering" callable that accepts a ContextStack instance
and returns a unicode string.
The possible rendering callables are the return values of the
following functions:
* RenderEngine._make_get_escaped()
* RenderEngine._make_get_inverse()
* RenderEngine._make_get_literal()
* RenderEngine._make_get_partial()
* RenderEngine._make_get_section()
"""
self._parse_tree = []
def __repr__(self):
return "[%s]" % (", ".join([repr(part) for part in self._parse_tree]))
def add(self, node):
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(val):
if callable(val):
return val(context)
if isinstance(val, basestring):
return val
return val.render(engine, context)
parts = map(get_unicode, self._parse_tree)
s = ''.join(parts)
return unicode(s)
|
