-- GeNeRaTeD fOr: ../../CBS/Funcons/Abstractions/Functions/compose.aterm
{-# LANGUAGE OverloadedStrings #-}

module Funcons.Core.Abstractions.Functions.Compose where

import Funcons.EDSL

entities = []

types = typeEnvFromList
    []

funcons = libFromList
    [("compose",StrictFuncon stepCompose)]

-- |
-- /compose(G,F)/ composes two functions /G/ and /F/ by
--   giving the result of /F/ as the argument to /G/ .
compose_ fargs = FApp "compose" (FTuple fargs)
stepCompose fargs =
    evalRules [rewrite1] []
    where rewrite1 = do
            let env = emptyEnv
            env <- vsMatch fargs [VPAnnotated (VPMetaVar "G") (TName "values"),VPAnnotated (VPMetaVar "F") (TName "values")] env
            rewriteTermTo (TApp "thunk" (TTuple [TApp "apply" (TTuple [TVar "G",TApp "apply" (TTuple [TVar "F",TName "given"])])])) env