-- GeNeRaTeD fOr: ../../CBS/Funcons/Computations/Control flow/Normal/Iterating/Definite/Filtering collections/map-filter.aterm
{-# LANGUAGE OverloadedStrings #-}

module Funcons.Core.Computations.ControlFlow.Normal.Iterating.Definite.FilteringCollections.MapFilter where

import Funcons.EDSL

entities = []

types = typeEnvFromList
    []

funcons = libFromList
    [("map-filter",PartiallyStrictFuncon [NonStrict,Strict] stepMap_filter)]

-- |
-- /map-filter(P,M)/ discards all entries from the map /M/ that do not
--   satisify the predicate /P/ .  /P/ is given a key/value pair.
map_filter_ fargs = FApp "map-filter" (FTuple fargs)
stepMap_filter fargs@[arg1,arg2] =
    evalRules [rewrite1] []
    where rewrite1 = do
            let env = emptyEnv
            env <- fsMatch fargs [PMetaVar "F",PAnnotated (PMetaVar "M") (TName "values")] env
            rewriteTermTo (TApp "list-to-map" (TTuple [TApp "list-filter" (TTuple [TVar "F",TApp "map-to-list" (TTuple [TVar "M"])])])) env
stepMap_filter fargs = sortErr (FApp "map-filter" (FTuple fargs)) "invalid number of arguments"