M.V. Hutz
f3b9137d75
Closes #26 - Added -i flag to select interpreter (lambda or debruijn) - Created debruijn package with Expression interface - Variable contains index and optional label - Abstraction contains only body (no parameter) - Application structure remains similar - Implemented De Bruijn reduction without variable renaming - Shift operation handles index adjustments - Substitute replaces by index instead of name - Abstracted Engine into interface with two implementations - LambdaEngine: original named variable engine - DeBruijnEngine: new index-based engine - Added conversion functions between representations - LambdaToDeBruijn: converts named to indexed - DeBruijnToLambda: converts indexed back to named - SaccharineToDeBruijn: direct saccharine to De Bruijn - Updated main to switch engines based on -i flag - All test samples pass with both engines Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
25 lines
623 B
Go
25 lines
623 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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)
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// Engine is an interface for reduction engines.
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type Engine interface {
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Run()
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GetResult() string
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On(message string, fn func()) *emitter.Observer
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Emit(message string)
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}
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// New creates the appropriate engine based on the config.
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func New(cfg *config.Config, input interface{}) Engine {
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if cfg.Interpreter == "debruijn" {
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return NewDeBruijnEngine(cfg, input)
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}
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return NewLambdaEngine(cfg, input)
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}
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