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A Log.* namespace: five levels (trace/debug/info/warn/error), a runtime threshold, and structured key=value fields, so games get something better than scattered print calls and release builds can go quiet without touching call sites. - Log.trace/debug/info/warn/error(msg, [k, v]...) -> stderr, "[LEVEL] msg k=v" - Log.set_level(n) show only level >= n (0 = all default, 5 silences all) - Log.level() read the current threshold Fields accept strings, ints, and longs (numbers formatted automatically); the level tag is chosen at compile time so a filtered-out level costs only a comparison. Writes to stderr, never touching the simulation — no effect on determinism/replays. v1 is the console sink; rotating-file and in-engine overlay sinks are noted as follow-ups. - examples/library/logging.ludic: asserts the set_level/level threshold round-trip and that every level (with mixed-type fields) runs without faulting; the stderr gating itself was verified by hand (warn/error emit, lower levels suppressed). Wired into `x test` (now 53 passed). - docs: a new Log section + per-symbol pages; inventory and coverage pass. - seed regenerated; `x bootstrap-cfree` fixpoint holds. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
24 lines
705 B
Markdown
24 lines
705 B
Markdown
---
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id: log-level
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name: Log.level
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category: log
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kind: namespace-method
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tokens: Log.level
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sig: Log.level() -> int
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tip: The current logging threshold.
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order: 7
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ns: Log
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member: level
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---
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Returns the current logging threshold — the minimum level that <a href="log-set_level"><code>Log.set_level</code></a> last set (0 by default). Use it to branch on how verbose logging is: skip building an expensive debug string when it would be dropped anyway, or show an in-game indicator that verbose logging is on. The levels are <code>trace</code> 0 through <code>error</code> 4.
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```ludic
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program Level {
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entry {
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print(Log.level()) # 0
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Log.set_level(2)
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print(Log.level()) # 2
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}
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}
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```
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