def parse(self, parser):
lineno = parser.stream.__next__().lineno
value = parser.parse_expression()
items_per_page_obj = parser.stream.next_if('integer')
items_per_page = items_per_page_obj.value if items_per_page_obj else DEFAULT_PAGINATION
if parser.stream.skip_if('name:as'):
name = parser.stream.expect('name').value
elif hasattr(value, 'name'):
name = value.name
else:
raise TemplateSyntaxError("Cannot determine the name of objects you want to paginate, use 'as foobar' syntax", lineno)
while not parser.stream.current.type == 'block_end':
parser.stream.skip()
return [
nodes.Assign(nodes.Name(name + '_pages', 'store'),
self.call_method('_render_pages', [value, nodes.Name('request', 'load'), nodes.Const(items_per_page)])
).set_lineno(lineno),
nodes.Assign(nodes.Name(name, 'store'),
nodes.Getattr(nodes.Name(name + '_pages', 'load'), 'object_list', nodes.Impossible())
).set_lineno(lineno),
]
def _output_child_to_const(self, node, frame, finalize):
const = node.as_const(frame.eval_ctx)
if not has_safe_repr(const):
raise nodes.Impossible()
if isinstance(node, nodes.TemplateData):
return const
return finalize.const(const)
def parse(self, parser):
lineno = parser.stream.next().lineno
object_list = parser.parse_expression()
if parser.stream.skip_if('name:as'):
name = parser.stream.expect('name').value
elif hasattr(object_list, 'name'):
name = object_list.name
else:
raise TemplateSyntaxError(
"Cannot determine the name of objects " \
"you want to paginate, use 'as foobar' syntax", lineno)
kwargs = [] # wait... what?
loops = 0
while parser.stream.current.type != 'block_end':
lineno = parser.stream.current.lineno
if loops:
parser.stream.expect('comma')
key = parser.parse_assign_target().name
if key not in self.default_kwargs.keys():
raise TemplateSyntaxError(
"Unknown keyword argument for autopaginate. "\
"Your options are: %s" % (
", ".join(self.default_kwargs.keys())
))
parser.stream.expect('assign')
value = parser.parse_expression()
kwargs.append(nodes.Keyword(key, value))
loops += 1
return [
nodes.Assign(nodes.Name(name + '_pages', 'store'),
self.call_method('_render_pages',
[object_list, nodes.Name('request', 'load')],
kwargs)
).set_lineno(lineno),
nodes.Assign(nodes.Name(name, 'store'),
nodes.Getattr(nodes.Name(name + '_pages', 'load'),
'object_list',
nodes.Impossible())
).set_lineno(lineno),
]
def visit_Output(self, node, frame):
"""Same as :meth:`CodeGenerator.visit_Output`, but do not call
``to_string`` on output nodes in generated code.
"""
if self.has_known_extends and frame.require_output_check:
return
finalize = self.environment.finalize
finalize_context = getattr(finalize, 'contextfunction', False)
finalize_eval = getattr(finalize, 'evalcontextfunction', False)
finalize_env = getattr(finalize, 'environmentfunction', False)
if finalize is not None:
if finalize_context or finalize_eval:
const_finalize = None
elif finalize_env:
def const_finalize(x):
return finalize(self.environment, x)
else:
const_finalize = finalize
else:
def const_finalize(x):
return x
# If we are inside a frame that requires output checking, we do so.
outdent_later = False
if frame.require_output_check:
self.writeline('if parent_template is None:')
self.indent()
outdent_later = True
# Try to evaluate as many chunks as possible into a templates string at
# compile time.
body = []
for child in node.nodes:
try:
if const_finalize is None:
raise nodes.Impossible()
const = child.as_const(frame.eval_ctx)
if not has_safe_repr(const):
raise nodes.Impossible()
except nodes.Impossible:
body.append(child)
continue
# the frame can't be volatile here, because otherwise the as_const
# function would raise an Impossible exception at that point
try:
if frame.eval_ctx.autoescape:
if hasattr(const, '__html__'):
const = const.__html__()
else:
const = escape(const)
const = const_finalize(const)
except Exception:
# if something goes wrong here we evaluate the node at runtime
# for easier debugging
body.append(child)
continue
if body and isinstance(body[-1], list):
body[-1].append(const)
else:
body.append([const])
# if we have less than 3 nodes or a buffer we yield or extend/append
if len(body) < 3 or frame.buffer is not None:
if frame.buffer is not None:
# for one item we append, for more we extend
if len(body) == 1:
self.writeline('%s.append(' % frame.buffer)
else:
self.writeline('%s.extend((' % frame.buffer)
self.indent()
for item in body:
if isinstance(item, list):
val = repr(native_concat(item))
if frame.buffer is None:
self.writeline('yield ' + val)
else:
self.writeline(val + ',')
else:
if frame.buffer is None:
self.writeline('yield ', item)
else:
self.newline(item)
close = 0
if finalize is not None:
self.write('environment.finalize(')
if finalize_context:
self.write('context, ')
close += 1
self.visit(item, frame)
if close > 0:
self.write(')' * close)
if frame.buffer is not None:
self.write(',')
if frame.buffer is not None:
# close the open parentheses
self.outdent()
self.writeline(len(body) == 1 and ')' or '))')
# otherwise we create a format string as this is faster in that case
else:
format = []
arguments = []
for item in body:
if isinstance(item, list):
format.append(native_concat(item).replace('%', '%%'))
else:
format.append('%s')
arguments.append(item)
self.writeline('yield ')
self.write(repr(concat(format)) + ' % (')
self.indent()
for argument in arguments:
self.newline(argument)
close = 0
if finalize is not None:
self.write('environment.finalize(')
if finalize_context:
self.write('context, ')
elif finalize_eval:
self.write('context.eval_ctx, ')
elif finalize_env:
self.write('environment, ')
close += 1
self.visit(argument, frame)
self.write(')' * close + ', ')
self.outdent()
self.writeline(')')
if outdent_later:
self.outdent()
