def buildDeleteStatementFromDecoded(node, kind, detail, source_ref):
if kind in ("Name", "Name_Exception"):
# Note: Name_Exception is a "del" for exception handlers that doesn't
# insist on the variable being defined, user code may do it too, and
# that will be fine, so make that tolerant.
variable_ref = detail
return StatementDelVariable(
variable_ref=variable_ref,
tolerant=kind == "Name_Exception",
source_ref=source_ref.atColumnNumber(node.col_offset + 1))
elif kind == "Attribute":
lookup_source, attribute_name = detail
return StatementDelAttribute(expression=lookup_source,
attribute_name=attribute_name,
source_ref=source_ref)
elif kind == "Subscript":
subscribed, subscript = detail
return StatementDelSubscript(expression=subscribed,
subscript=subscript,
source_ref=source_ref)
elif kind == "Slice":
lookup_source, lower, upper = detail
use_sliceobj = python_version >= 300
if use_sliceobj:
return StatementDelSubscript(expression=lookup_source,
subscript=ExpressionBuiltinSlice(
start=lower,
stop=upper,
step=None,
source_ref=source_ref),
source_ref=source_ref)
else:
return StatementDelSlice(expression=lookup_source,
lower=lower,
upper=upper,
source_ref=source_ref)
elif kind == "Tuple":
result = []
for sub_node in detail:
result.append(
buildDeleteStatementFromDecoded(node=node,
kind=sub_node[0],
detail=sub_node[1],
source_ref=source_ref))
return makeStatementsSequenceOrStatement(statements=result,
source_ref=source_ref)
else:
assert False, (kind, detail, source_ref)
def buildDeleteStatementFromDecoded(provider, kind, detail, source_ref):
# This function is a case driven by returns, pylint: disable=too-many-return-statements
if kind in ("Name", "Name_Exception"):
# Note: Name_Exception is a "del" for exception handlers that doesn't
# insist on the variable being defined, user code may do it too, and
# that will be fine, so make that tolerant.
return StatementDelVariableName(
provider=provider,
variable_name=detail,
tolerant=kind == "Name_Exception",
source_ref=source_ref,
)
elif kind == "Attribute":
lookup_source, attribute_name = detail
return StatementDelAttribute(
expression=lookup_source,
attribute_name=mangleName(attribute_name, provider),
source_ref=source_ref,
)
elif kind == "Subscript":
subscribed, subscript = detail
return StatementDelSubscript(subscribed=subscribed,
subscript=subscript,
source_ref=source_ref)
elif kind == "Slice":
lookup_source, lower, upper = detail
use_sliceobj = python_version >= 0x300
if use_sliceobj:
return StatementDelSubscript(
subscribed=lookup_source,
subscript=makeExpressionBuiltinSlice(start=lower,
stop=upper,
step=None,
source_ref=source_ref),
source_ref=source_ref,
)
else:
return StatementDelSlice(
expression=lookup_source,
lower=lower,
upper=upper,
source_ref=source_ref,
)
elif kind == "Tuple":
result = []
for sub_node in detail:
result.append(
buildDeleteStatementFromDecoded(
provider=provider,
kind=sub_node[0],
detail=sub_node[1],
source_ref=source_ref,
))
if result:
return makeStatementsSequenceOrStatement(statements=result,
source_ref=source_ref)
else:
return None
else:
assert False, (kind, detail, source_ref)