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
769 B
Go
33 lines
769 B
Go
// Package "engine" provides an extensible interface for users to interfact with
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// λ-calculus.
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package engine
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import (
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"git.maximhutz.com/max/lambda/internal/config"
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"git.maximhutz.com/max/lambda/pkg/emitter"
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"git.maximhutz.com/max/lambda/pkg/lambda"
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)
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// A process for reducing one λ-expression.
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type Engine struct {
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Config *config.Config
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Expression *lambda.Expression
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emitter.BaseEmitter[Event]
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}
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// Create a new engine, given an unreduced λ-expression.
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func New(config *config.Config, expression *lambda.Expression) *Engine {
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return &Engine{Config: config, Expression: expression}
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}
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// Begin the reduction process.
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func (e Engine) Run() {
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e.Emit(StartEvent)
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lambda.ReduceAll(e.Expression, func() {
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e.Emit(StepEvent)
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})
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e.Emit(StopEvent)
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}
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