-module(gleam@function).
-compile(no_auto_import).

-export([compose/2, curry2/1, curry3/1, curry4/1, curry5/1, curry6/1, flip/1, identity/1, constant/1, tap/2]).

-spec compose(fun((COZ) -> CPA), fun((CPA) -> CPB)) -> fun((COZ) -> CPB).
compose(Fun1, Fun2) ->
    fun(A) -> Fun2(Fun1(A)) end.

-spec curry2(fun((CPC, CPD) -> CPE)) -> fun((CPC) -> fun((CPD) -> CPE)).
curry2(Fun) ->
    fun(A) -> fun(B) -> Fun(A, B) end end.

-spec curry3(fun((CPG, CPH, CPI) -> CPJ)) -> fun((CPG) -> fun((CPH) -> fun((CPI) -> CPJ))).
curry3(Fun) ->
    fun(A) -> fun(B) -> fun(C) -> Fun(A, B, C) end end end.

-spec curry4(fun((CPL, CPM, CPN, CPO) -> CPP)) -> fun((CPL) -> fun((CPM) -> fun((CPN) -> fun((CPO) -> CPP)))).
curry4(Fun) ->
    fun(A) -> fun(B) -> fun(C) -> fun(D) -> Fun(A, B, C, D) end end end end.

-spec curry5(fun((CPR, CPS, CPT, CPU, CPV) -> CPW)) -> fun((CPR) -> fun((CPS) -> fun((CPT) -> fun((CPU) -> fun((CPV) -> CPW))))).
curry5(Fun) ->
    fun(A) ->
        fun(B) ->
            fun(C) -> fun(D) -> fun(E) -> Fun(A, B, C, D, E) end end end
        end
    end.

-spec curry6(fun((CPY, CPZ, CQA, CQB, CQC, CQD) -> CQE)) -> fun((CPY) -> fun((CPZ) -> fun((CQA) -> fun((CQB) -> fun((CQC) -> fun((CQD) -> CQE)))))).
curry6(Fun) ->
    fun(A) ->
        fun(B) ->
            fun(C) ->
                fun(D) -> fun(E) -> fun(F) -> Fun(A, B, C, D, E, F) end end end
            end
        end
    end.

-spec flip(fun((CQG, CQH) -> CQI)) -> fun((CQH, CQG) -> CQI).
flip(Fun) ->
    fun(B, A) -> Fun(A, B) end.

-spec identity(CQJ) -> CQJ.
identity(X) ->
    X.

-spec constant(CQK) -> fun((any()) -> CQK).
constant(Value) ->
    fun(_) -> Value end.

-spec tap(CQM, fun((CQM) -> any())) -> CQM.
tap(Arg, Effect) ->
    Effect(Arg),
    Arg.