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Function param reduction seems iffy, what breaks without it? #2980

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Function param reduction seems iffy, what breaks without it? #2980

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2e35ac3
Function param reduction seems iffy, what breaks without it?
deusaquilus Jan 15, 2024
60744b5
continue to implement beta reduction
deusaquilus Jan 15, 2024
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7 changes: 7 additions & 0 deletions quill-core/src/test/scala/io/getquill/norm/BetaReductionSpec.scala
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Original file line number Diff line number Diff line change
Expand Up @@ -181,8 +181,15 @@ class BetaReductionSpec extends Spec {
BetaReduction(ast) mustEqual BinaryOperation(Ident("b"), NumericOperator.`/`, Ident("a"))
}
"nested function apply" in {
// (b) => a/b
val f1 = Function(List(Ident("b")), BinaryOperation(Ident("a"), NumericOperator.`/`, Ident("b")))
// (a) => (b) => a/b
val f2 = Function(List(Ident("a")), f1)
// ((a) => (b) => a/b).apply(b).apply(a) ->
// (tmp_b) => a/tmp_b ->
// (a) => tmp_a/tmp_b ->
// tmp_a/a
// b/a
val ast: Ast = FunctionApply(FunctionApply(f2, List(Ident("b"))), List(Ident("a")))
BetaReduction(ast) mustEqual BinaryOperation(Ident("b"), NumericOperator.`/`, Ident("a"))
}
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