kami
56 lines
1.9 KiB
Go
56 lines
1.9 KiB
Go
package router
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import (
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"regexp"
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"strings"
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)
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// Grammar — one stage-0 exact-match pattern. Wake-word + known command grammar
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// hits the allowlist directly, skips the classifier (lowest latency — the vosk
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// command path). Boring high-frequency acts for free.
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//
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// A Grammar returns a fully-formed Decision (intent + slots) at confidence 1.0
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// when its pattern matches AND its Build returns ok=true; the router stops the
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// cascade. Grammar rules are code, not config — same boundary as rules-as-code
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// in the loop. The tool registry populates the verb set at daemon wiring time.
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type Grammar struct {
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Name string
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Pattern *regexp.Regexp // matched against the raw utterance
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Build func(match []string) (Decision, bool)
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}
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// wakeWordAct — "maven, restart nginx" / "maven restart nginx" → the remainder
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// is matched against the act allowlist. A non-match returns ok=false so the
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// cascade falls through to the classifier (a wakeword prefix alone doesn't
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// guarantee a known command — "maven, i'm tired" is a fact, not an act).
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var wakeWordAct = regexp.MustCompile(`(?i)^\s*maven[,: ]+(.+)$`)
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// DefaultGrammars — the wake-word act fast path. The ActMatcher is the same
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// allowlist stage-2 act extraction uses (single source of truth for the fn
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// list). Returns nil grammars if no matcher is wired (the daemon always wires
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// one — the guard is for tests that only exercise the classifier).
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func DefaultGrammars(actMatcher ActMatcher) []Grammar {
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if actMatcher == nil {
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return nil
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}
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return []Grammar{
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{
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Name: "wakeword-act",
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Pattern: wakeWordAct,
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Build: func(m []string) (Decision, bool) {
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rest := strings.TrimSpace(m[1])
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fn, args, ok := actMatcher.Match(rest)
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if !ok {
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return Decision{}, false // fall through to classifier
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}
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return Decision{
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Stage: 0,
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Intent: IntentAct,
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Confidence: 1.0,
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Slots: Slots{Fn: fn, Args: args, HasFn: true, Text: rest},
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}, true
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},
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},
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}
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}
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