def visitOverride()

in hydra/core/override_parser/overrides_visitor.py [0:0]
56 lines of code
14 McCabe index (conditional complexity)

    def visitOverride(self, ctx: OverrideParser.OverrideContext) -> Override:
        override_type = OverrideType.CHANGE
        children = ctx.getChildren()
        first_node = next(children)
        if isinstance(first_node, TerminalNodeImpl):
            symbol_text = first_node.symbol.text
            if symbol_text == "+":
                override_type = OverrideType.ADD
                key_node = next(children)
                if self.is_matching_terminal(key_node, OverrideLexer.PLUS):
                    override_type = OverrideType.FORCE_ADD
                    key_node = next(children)

            elif symbol_text == "~":
                override_type = OverrideType.DEL
                key_node = next(children)
            else:
                assert False
        else:
            key_node = first_node

        key = self.visitKey(key_node)
        value: Union[ChoiceSweep, RangeSweep, IntervalSweep, ParsedElementType]
        eq_node = next(children)
        if (
            override_type == OverrideType.DEL
            and isinstance(eq_node, TerminalNode)
            and eq_node.symbol.type == Token.EOF
        ):
            value = None
            value_type = None
        else:
            assert self.is_matching_terminal(eq_node, OverrideLexer.EQUAL)
            if ctx.value() is None:
                value = ""
                value_type = ValueType.ELEMENT
            else:
                value = self.visitValue(ctx.value())
                if isinstance(value, ChoiceSweep):
                    if value.simple_form:
                        value_type = ValueType.SIMPLE_CHOICE_SWEEP
                    else:
                        value_type = ValueType.CHOICE_SWEEP
                elif isinstance(value, Glob):
                    value_type = ValueType.GLOB_CHOICE_SWEEP
                elif isinstance(value, IntervalSweep):
                    value_type = ValueType.INTERVAL_SWEEP
                elif isinstance(value, RangeSweep):
                    value_type = ValueType.RANGE_SWEEP
                else:
                    value_type = ValueType.ELEMENT

        return Override(
            type=override_type,
            key_or_group=key.key_or_group,
            _value=value,
            value_type=value_type,
            package=key.package,
        )