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# -*- coding: utf-8 -*-
"""
Jinja Documentation Extensions
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Support for automatically documenting filters and tests.
:copyright: Copyright 2008 by Armin Ronacher.
:license: BSD.
"""
import collections
import os
import re
import inspect
import logging
import jinja2
from itertools import islice
from types import BuiltinFunctionType
from docutils import nodes
from docutils.statemachine import ViewList
from sphinx.ext.autodoc import prepare_docstring
from sphinx.application import TemplateBridge
from pygments.style import Style
from pygments.token import Keyword, Name, Comment, String, Error, \
Number, Operator, Generic
from jinja2 import Environment, FileSystemLoader
def parse_rst(state, content_offset, doc):
node = nodes.section()
# hack around title style bookkeeping
surrounding_title_styles = state.memo.title_styles
surrounding_section_level = state.memo.section_level
state.memo.title_styles = []
state.memo.section_level = 0
state.nested_parse(doc, content_offset, node, match_titles=1)
state.memo.title_styles = surrounding_title_styles
state.memo.section_level = surrounding_section_level
return node.children
class JinjaStyle(Style):
title = 'Jinja Style'
default_style = ""
styles = {
Comment: 'italic #aaaaaa',
Comment.Preproc: 'noitalic #B11414',
Comment.Special: 'italic #505050',
Keyword: 'bold #B80000',
Keyword.Type: '#808080',
Operator.Word: 'bold #B80000',
Name.Builtin: '#333333',
Name.Function: '#333333',
Name.Class: 'bold #333333',
Name.Namespace: 'bold #333333',
Name.Entity: 'bold #363636',
Name.Attribute: '#686868',
Name.Tag: 'bold #686868',
Name.Decorator: '#686868',
String: '#AA891C',
Number: '#444444',
Generic.Heading: 'bold #000080',
Generic.Subheading: 'bold #800080',
Generic.Deleted: '#aa0000',
Generic.Inserted: '#00aa00',
Generic.Error: '#aa0000',
Generic.Emph: 'italic',
Generic.Strong: 'bold',
Generic.Prompt: '#555555',
Generic.Output: '#888888',
Generic.Traceback: '#aa0000',
Error: '#F00 bg:#FAA'
}
_sig_re = re.compile(r'^[a-zA-Z_][a-zA-Z0-9_]*(\(.*?\))')
def format_function(name, aliases, func):
lines = inspect.getdoc(func).splitlines()
signature = '()'
if isinstance(func, BuiltinFunctionType):
match = _sig_re.match(lines[0])
if match is not None:
del lines[:1 + bool(lines and not lines[0])]
signature = match.group(1)
else:
try:
argspec = inspect.getargspec(func)
if getattr(func, 'environmentfilter', False) or \
getattr(func, 'contextfilter', False) or \
getattr(func, 'evalcontextfilter', False):
del argspec[0][0]
signature = inspect.formatargspec(*argspec)
except:
pass
result = ['.. function:: %s%s' % (name, signature), '']
result.extend(' ' + line for line in lines)
if aliases:
result.extend(('', ' :aliases: %s' % ', '.join(
'``%s``' % x for x in sorted(aliases))))
return result
def dump_functions(mapping):
def directive(
dirname, arguments, options, content, lineno, content_offset,
block_text, state, state_machine
):
reverse_mapping = {}
for name, func in mapping.items():
reverse_mapping.setdefault(func, []).append(name)
filters = []
compare_ops = set(('lt', 'le', 'eq', 'ne', 'ge', 'gt'))
for func, names in reverse_mapping.items():
aliases = sorted(names, key=len)
aliases = sorted(aliases, key=lambda x: x in compare_ops)
name = aliases.pop()
filters.append((name, aliases, func))
filters.sort()
result = ViewList()
for name, aliases, func in filters:
for item in format_function(name, aliases, func):
result.append(item, '<jinjaext>')
node = nodes.paragraph()
state.nested_parse(result, content_offset, node)
return node.children
return directive
from jinja2.defaults import DEFAULT_FILTERS, DEFAULT_TESTS
jinja_filters = dump_functions(DEFAULT_FILTERS)
jinja_tests = dump_functions(DEFAULT_TESTS)
def jinja_nodes(dirname, arguments, options, content, lineno,
content_offset, block_text, state, state_machine):
from jinja2.nodes import Node
doc = ViewList()
def walk(node, indent):
p = ' ' * indent
sig = ', '.join(node.fields)
doc.append(p + '.. autoclass:: %s(%s)' % (node.__name__, sig), '')
if node.abstract:
members = []
for key, name in node.__dict__.items():
if not key.startswith('_') and \
not hasattr(node.__base__, key) and isinstance(name, collections.Callable):
members.append(key)
if members:
members.sort()
doc.append('%s :members: %s' % (p, ', '.join(members)), '')
if node.__base__ != object:
doc.append('', '')
doc.append('%s :Node type: :class:`%s`' %
(p, node.__base__.__name__), '')
doc.append('', '')
children = node.__subclasses__()
children.sort(key=lambda x: x.__name__.lower())
for child in children:
walk(child, indent)
walk(Node, 0)
return parse_rst(state, content_offset, doc)
def inject_toc(app, doctree, docname):
titleiter = iter(doctree.traverse(nodes.title))
try:
# skip first title, we are not interested in that one
next(titleiter)
title = next(titleiter)
# and check if there is at least another title
next(titleiter)
except StopIteration:
return
tocnode = nodes.section('')
tocnode['classes'].append('toc')
toctitle = nodes.section('')
toctitle['classes'].append('toctitle')
toctitle.append(nodes.title(text='Table Of Contents'))
tocnode.append(toctitle)
tocnode += doctree.document.settings.env.get_toc_for(docname)[0][1]
title.parent.insert(title.parent.children.index(title), tocnode)
def setup(app):
app.add_directive('jinjafilters', jinja_filters, 0, (0, 0, 0))
app.add_directive('jinjatests', jinja_tests, 0, (0, 0, 0))
app.add_directive('jinjanodes', jinja_nodes, 0, (0, 0, 0))
# uncomment for inline toc. links are broken unfortunately
##app.connect('doctree-resolved', inject_toc)