"""Leaf constants shared by the scheduler and node executors.

Kept dependency-free so the engine and the node package can both import it
without forming a cycle.
"""

from __future__ import annotations

# Metadata key a node sets to restrict which outgoing ports the engine activates.
ACTIVE_PORTS = "activePorts"

# Reserved port names.
LOOP_CONTINUE_PORT = "continue"
LOOP_DONE_PORT = "done"
CONDITION_DEFAULT_PORT = "else"

__all__ = ["ACTIVE_PORTS", "CONDITION_DEFAULT_PORT", "LOOP_CONTINUE_PORT", "LOOP_DONE_PORT"]