M.V. Hutz
eba2182151
Introduce pkg/expr.Expression as a base interface for all evaluatable expression types, enabling future support for multiple evaluation modes (SKI combinators, typed lambda calculus, etc.). - Add pkg/expr/expr.go with Expression interface requiring String() method. - Update lambda.Expression to embed expr.Expression. - Add String() method to Abstraction, Application, and Variable types. - Update plugins to use String() instead of lambda.Stringify().
24 lines
416 B
Go
24 lines
416 B
Go
package plugins
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import (
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"log/slog"
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"git.maximhutz.com/max/lambda/internal/engine"
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)
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type Logs struct {
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logger *slog.Logger
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process *engine.Engine
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}
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func NewLogs(logger *slog.Logger, process *engine.Engine) *Logs {
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plugin := &Logs{logger, process}
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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 *Logs) Step() {
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t.logger.Info("reduction", "tree", (*t.process.Expression).String())
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}
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