def parse_test(self, node):
token = next(self.stream)
if self.stream.current.test('name:not'):
next(self.stream)
negated = True
else:
negated = False
name = self.stream.expect('name').value
while self.stream.current.type == 'dot':
next(self.stream)
name += '.' + self.stream.expect('name').value
dyn_args = dyn_kwargs = None
kwargs = []
if self.stream.current.type == 'lparen':
args, kwargs, dyn_args, dyn_kwargs = self.parse_call(None)
elif (self.stream.current.type
in ('name', 'string', 'integer', 'float', 'lparen', 'lbracket',
'lbrace') and not self.stream.current.test_any(
'name:else', 'name:or', 'name:and')):
if self.stream.current.test('name:is'):
self.fail('You cannot chain multiple tests with is')
args = [self.parse_primary()]
else:
args = []
node = nodes.Test(node,
name,
args,
kwargs,
dyn_args,
dyn_kwargs,
lineno=token.lineno)
if negated:
node = nodes.Not(node, lineno=token.lineno)
return node
def decrement(token: "Token", parser: "Parser") -> List[nodes.Node]:
"""The decrement tag {% decrement x %}
Args:
token: The token matches tag name
parser: The parser
Returns:
The parsed node
"""
variable = parser.stream.expect("name")
varname = f"_liquid_xcrement_{variable.value}"
varnode = nodes.Name(varname, "load")
return [
nodes.Assign(
nodes.Name(varname, "store"),
nodes.CondExpr(
nodes.Test(varnode, "defined", [], [], None, None),
nodes.Sub(varnode, nodes.Const(1)),
nodes.Const(-1),
),
lineno=token.lineno,
),
nodes.Output([varnode], lineno=token.lineno),
]
def parse(self, parser):
lineno = next(parser.stream).lineno
# Get the block selection from the tag argument.
block_selection = parser.parse_expression()
# Make "Name" node for "For" node target.
block_name = nodes.Name('_ext_ob_blknm', 'store')
# For each block, add an "If" node checking if it matches the target.
# Also record the original "default" ordering of the blocks.
blocks = []
block_names = []
for node in parser.parse_statements(['name:endorderblocks'],
drop_needle=True):
if isinstance(node, nodes.Block):
blocks.append(nodes.If(
nodes.Compare(
block_name,
[nodes.Operand('eq', nodes.Const(node.name))]),
[node], []))
block_names.append(node.name)
# Make a "For" node iterating over the given block selection. If the
# block selection is undefined or None then use the original ordering.
return nodes.For(
block_name,
nodes.CondExpr(
nodes.And(
nodes.Test(block_selection, 'defined',
[], [], None, None),
nodes.Not(
nodes.Test(block_selection, 'none',
[], [], None, None)),
),
block_selection,
nodes.Tuple([nodes.Const(x) for x in block_names], 'store')),
blocks, [], None, False)
def parse_test(self, node):
token = next(self.stream)
if self.stream.current.test("name:not"):
next(self.stream)
negated = True
else:
negated = False
name = self.stream.expect("name").value
while self.stream.current.type == "dot":
next(self.stream)
name += "." + self.stream.expect("name").value
dyn_args = dyn_kwargs = None
kwargs = []
if self.stream.current.type == "lparen":
args, kwargs, dyn_args, dyn_kwargs = self.parse_call(None)
elif self.stream.current.type in (
"name",
"string",
"integer",
"float",
"lparen",
"lbracket",
"lbrace",
) and not self.stream.current.test_any("name:else", "name:or",
"name:and"):
if self.stream.current.test("name:is"):
self.fail("You cannot chain multiple tests with is")
args = [self.parse_primary()]
else:
args = []
node = nodes.Test(node,
name,
args,
kwargs,
dyn_args,
dyn_kwargs,
lineno=token.lineno)
if negated:
node = nodes.Not(node, lineno=token.lineno)
return node
