# logging.ludic — Log.* levels, the threshold gate, and structured fields. Log
# lines go to stderr, which the test harness does not capture, so this program
# asserts the stdout-observable contract: the threshold round-trips through
# set_level/level, and every level method (with mixed string/number fields) runs
# without faulting. The run raises the level above `error` first so the suite's
# output stays clean; the actual stderr sink and its gating are demonstrated in
# the docs and verified by hand. Running it prints: 0 5 2 1
program Logging {
  entry {
    print(Log.level())              # 0 — everything shown by default

    Log.set_level(5)                # above error: silence the console for this run
    print(Log.level())              # 5

    # every level builds its line (including numeric fields, which are formatted
    # for you) and is threshold-gated; none writes at level 5.
    Log.trace("entering frame", "n", 10)
    Log.debug("state", "hp", 100, "phase", "combat")
    Log.info("level loaded", "name", "cavern", "entities", 42)
    Log.warn("missing texture, using placeholder", "path", "rock.png")
    Log.error("save failed", "code", 5)

    Log.set_level(2)                # info and above
    print(Log.level())              # 2

    print(1)                        # sentinel: reached the end without crashing
  }
}