def parse_call_block(self):
node = nodes.CallBlock(lineno=next(self.stream).lineno)
if self.stream.current.type == 'lparen':
self.parse_signature(node)
else:
node.args = []
node.defaults = []
node.call = self.parse_expression()
if not isinstance(node.call, nodes.Call):
self.fail('expected call', node.lineno)
node.body = self.parse_statements(('name:endcall', ), drop_needle=True)
return node
def parse(self, parser: Parser) -> nodes.Node:
"""
See http://jinja.pocoo.org/docs/2.10/extensions/ for help writing
extensions.
"""
# This will be the macro name "assert"
token = next(parser.stream)
# now we parse a single expression that must evalute to True
args = [
parser.parse_expression(),
nodes.Const(token.lineno),
nodes.Const(parser.name),
nodes.Const(parser.filename)
]
if parser.stream.skip_if('comma'):
args.append(parser.parse_expression())
else:
args.append(nodes.Const("Template assertion failed."))
return nodes.CallBlock(self.call_method('_do_assert', args), [], [],
"").set_lineno(token.lineno)