M.V. Hutz
17d71da025
Remove verbose inline and doc comments added in the structural sharing PR. The code is self-explanatory and the comments were redundant. Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
28 lines
523 B
Go
28 lines
523 B
Go
package lambda
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import "git.maximhutz.com/max/lambda/pkg/fifo"
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func ReduceOnce(e *Expression) bool {
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stack := fifo.New(e)
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for !stack.Empty() {
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top := stack.MustPop()
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switch typed := (*top).(type) {
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case *Abstraction:
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stack.Push(&typed.body)
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case *Application:
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if fn, fnOk := typed.function.(*Abstraction); fnOk {
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reduced := fn.body.Substitute(fn.parameter, typed.argument)
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*top = reduced
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return true
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}
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stack.Push(&typed.argument)
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stack.Push(&typed.function)
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}
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}
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return false
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}
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