def from_json()

in sapp/pipeline/mariana_trench_parser.py [0:0]

• 22 lines of code
• 7 McCabe index (conditional complexity)

    def from_json(port: str, leaf_kind: str) -> "Port":
        elements = port.split(".")

        if len(elements) == 0:
            raise sapp.ParseError(f"Invalid port: `{port}`.")

        elements[0] = elements[0].lower()
        if elements[0] == "leaf":
            elements[0] = leaf_kind
        elif elements[0] == "return":
            elements[0] = "result"
        elif elements[0] == "anchor":
            # Anchor port is of the form Anchor.<MT port, e.g. Argument(0)>
            # SAPP/CRTEX expects: "anchor:formal(0)"
            canonical_port = Port.from_json(
                ".".join(elements[1:]), "unreachable_leaf_kind_anchor"
            )
            return Port(f"{elements[0]}:{Port.to_crtex(canonical_port.value)}")
        elif elements[0] == "producer" and len(elements) >= 3:
            # Producer port is of the form Producer.<producer_id>.<MT port>.
            # SAPP/CRTEX expects: "producer:<producer_id>:<canonical_port>".
            root = elements[0]
            producer_id = elements[1]
            canonical_port = Port.from_json(
                ".".join(elements[2:]), "unreachable_leaf_kind_producer"
            )
            return Port(f"{root}:{producer_id}:{Port.to_crtex(canonical_port.value)}")

        return Port(".".join(elements))