M.V. Hutz
6b946fb5dc
Refactors the event emitter system from string-based messages to a type-safe generic implementation using typed events. Consolidates separate tracker packages into a unified plugins architecture. Changes: - Replace Emitter with BaseEmitter[E comparable] using generics - Add Event type with StartEvent, StepEvent, and StopEvent constants - Create Listener[E] interface with BaseListener implementation - Consolidate explanation, performance, and statistics trackers into internal/plugins package - Simplify main CLI by using plugin constructors instead of manual event subscription - Add Items() iterator method to Set for idiomatic range loops
33 lines
834 B
Go
33 lines
834 B
Go
// Package "explanation" provides a observer to gather the reasoning during the
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// reduction, and present a thorough explanation to the user for each step.
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package plugins
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import (
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"fmt"
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"git.maximhutz.com/max/lambda/internal/engine"
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"git.maximhutz.com/max/lambda/pkg/lambda"
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)
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// Track the reductions made by a reduction proess.
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type Explanation struct {
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process *engine.Engine
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}
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// Attaches a new explanation tracker to a process.
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func NewExplanation(process *engine.Engine) *Explanation {
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plugin := &Explanation{process: process}
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process.On(engine.StartEvent, plugin.Start)
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process.On(engine.StepEvent, plugin.Step)
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return plugin
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}
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func (t *Explanation) Start() {
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fmt.Println(lambda.Stringify(*t.process.Expression))
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}
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func (t *Explanation) Step() {
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fmt.Println(" =", lambda.Stringify(*t.process.Expression))
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}
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