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pass reducer to dispatch

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to define functions that has lambda arguments, dispatching requires a
reducer
This commit is contained in:
Umur Ozkul 2022-05-04 15:22:28 +02:00
parent 33ee0b27d5
commit ae48bd6420
3 changed files with 20 additions and 10 deletions
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24
packages/squiggle-lang/src/rescript/Reducer/Reducer_Dispatch/Reducer_Dispatch_BuiltIn.res
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@ -1,7 +1,8 @@
module ExternalLibrary = ReducerInterface.ExternalLibrary
module MathJs = Reducer_MathJs
module Bindings = Reducer_Expression_Bindings
module ExpressionT = Reducer_Expression_T
module ExternalLibrary = ReducerInterface.ExternalLibrary
module Lambda = Reducer_Expression_Lambda
module MathJs = Reducer_MathJs
open ReducerInterface.ExpressionValue
open Reducer_ErrorValue
@ -13,7 +14,10 @@ open Reducer_ErrorValue
exception TestRescriptException
let callInternal = (call: functionCall, _environment): result<'b, errorValue> => {
let callInternal = (call: functionCall, _environment, _reducer: ExpressionT.reducerFn): result<
'b,
errorValue,
> => {
let callMathJs = (call: functionCall): result<'b, errorValue> =>
switch call {
| ("javascriptraise", [msg]) => Js.Exn.raiseError(toString(msg)) // For Tests
@ -79,11 +83,13 @@ let callInternal = (call: functionCall, _environment): result<'b, errorValue> =>
switch call {
// | ("$atIndex", [obj, index]) => (toStringWithType(obj) ++ "??~~~~" ++ toStringWithType(index))->EvString->Ok
| ("$atIndex", [EvArray(aValueArray), EvArray([EvNumber(fIndex)])]) => arrayAtIndex(aValueArray, fIndex)
| ("$atIndex", [EvArray(aValueArray), EvArray([EvNumber(fIndex)])]) =>
arrayAtIndex(aValueArray, fIndex)
| ("$atIndex", [EvRecord(dict), EvArray([EvString(sIndex)])]) => recordAtIndex(dict, sIndex)
| ("$constructRecord", [EvArray(arrayOfPairs)]) => constructRecord(arrayOfPairs)
| ("$exportBindings", [EvRecord(externalBindings)]) => doExportBindings(externalBindings)
| ("$setBindings", [EvRecord(externalBindings), EvSymbol(symbol), value]) => doSetBindings(externalBindings, symbol, value)
| ("$setBindings", [EvRecord(externalBindings), EvSymbol(symbol), value]) =>
doSetBindings(externalBindings, symbol, value)
| ("inspect", [value, EvString(label)]) => inspectLabel(value, label)
| ("inspect", [value]) => inspect(value)
// | ("map", [EvArray(aValueArray), EvLambda(lambdaValue)]) => doMapArray(aValueArray, aLambdaValue)
@ -95,12 +101,16 @@ let callInternal = (call: functionCall, _environment): result<'b, errorValue> =>
/*
Reducer uses Result monad while reducing expressions
*/
let dispatch = (call: functionCall, environment): result<expressionValue, errorValue> =>
let dispatch = (call: functionCall, environment, reducer: ExpressionT.reducerFn): result<
expressionValue,
errorValue,
> =>
try {
let callInternalWithReducer = (call, environment) => callInternal(call, environment, reducer)
let (fn, args) = call
// There is a bug that prevents string match in patterns
// So we have to recreate a copy of the string
ExternalLibrary.dispatch((Js.String.make(fn), args), environment, callInternal)
ExternalLibrary.dispatch((Js.String.make(fn), args), environment, callInternalWithReducer)
} catch {
| Js.Exn.Error(obj) => REJavaScriptExn(Js.Exn.message(obj), Js.Exn.name(obj))->Error
| _ => RETodo("unhandled rescript exception")->Error

3
packages/squiggle-lang/src/rescript/Reducer/Reducer_Expression/Reducer_Expression.res
View File

@ -77,7 +77,8 @@ and reduceValueList = (valueList: list<expressionValue>, environment): result<
'e,
> =>
switch valueList {
| list{EvCall(fName), ...args} => (fName, args->Belt.List.toArray)->BuiltIn.dispatch(environment)
| list{EvCall(fName), ...args} =>
(fName, args->Belt.List.toArray)->BuiltIn.dispatch(environment, reduceExpression)
| list{EvLambda(lamdaCall), ...args} =>
Lambda.doLambdaCall(lamdaCall, args, environment, reduceExpression)

3
packages/squiggle-lang/src/rescript/Reducer/Reducer_Expression/Reducer_Expression_Lambda.res
View File

@ -55,6 +55,5 @@ let applyParametersToLambda = (
)
}
let doLambdaCall = (lambdaValue: ExpressionValue.lambdaValue, args, environment, reducer) => {
let doLambdaCall = (lambdaValue: ExpressionValue.lambdaValue, args, environment, reducer) =>
applyParametersToLambda(lambdaValue, args, environment, reducer)
}