62 lines
1.8 KiB
Plaintext
62 lines
1.8 KiB
Plaintext
open FunctionRegistry_Core
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open FunctionRegistry_Helpers
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module Declaration = {
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let frType = FRTypeRecord([
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("fn", FRTypeLambda),
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("inputs", FRTypeArray(FRTypeRecord([("min", FRTypeNumber), ("max", FRTypeNumber)]))),
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])
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let fromExpressionValue = (e: frValue): result<internalExpressionValue, string> => {
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switch FunctionRegistry_Helpers.Prepare.ToValueArray.Record.twoArgs([e]) {
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| Ok([FRValueLambda(lambda), FRValueArray(inputs)]) => {
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open FunctionRegistry_Helpers.Prepare
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let getMinMax = arg =>
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ToValueArray.Record.toArgs([arg])
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->E.R.bind(ToValueTuple.twoNumbers)
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->E.R2.fmap(((min, max)) => Declaration.ContinuousFloatArg.make(min, max))
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inputs
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->E.A2.fmap(getMinMax)
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->E.A.R.firstErrorOrOpen
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->E.R2.fmap(args => ReducerInterface_InternalExpressionValue.IEvDeclaration(
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Declaration.make(lambda, args),
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))
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}
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| Error(r) => Error(r)
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| Ok(_) => Error(FunctionRegistry_Helpers.impossibleError)
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}
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}
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}
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let nameSpace = "Function"
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let library = [
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Function.make(
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~name="declare",
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~nameSpace,
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~requiresNamespace=true,
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~description="Adds metadata to a function of the input ranges. Works now for numeric and date inputs. This is useful when making predictions. It allows you to limit the domain that your prediction will be used and scored within.",
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~examples=[
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`declareFn({
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fn: {|a,b| a },
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inputs: [
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{min: 0, max: 100},
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{min: 30, max: 50}
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]
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})`,
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],
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~isExperimental=true,
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~definitions=[
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FnDefinition.make(
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~name="declare",
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~inputs=[Declaration.frType],
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~run=(_, inputs, _) => {
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inputs->getOrError(0)->E.R.bind(Declaration.fromExpressionValue)
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},
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(),
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),
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],
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(),
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),
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]
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