ranged_int

-module(ranged_int@builtin@uint8).
-compile([no_auto_import, nowarn_unused_vars, nowarn_unused_function, nowarn_nomatch]).

-export([to_bigint/1, to_int/1, from_bigint/1, from_int/1, compare/2, add/2, subtract/2, multiply/2, divide/2, divide_no_zero/2, modulo/2, modulo_no_zero/2, remainder/2, remainder_no_zero/2, power/2, overflow/1, eject/1]).
-export_type([uint8/0]).

-opaque uint8() :: {uint8, bigi:big_int()}.

-spec to_bigint(uint8()) -> bigi:big_int().
to_bigint(Uint) ->
    erlang:element(2, Uint).

-spec to_int(uint8()) -> integer().
to_int(Uint) ->
    _assert_subject = begin
        _pipe = Uint,
        _pipe@1 = to_bigint(_pipe),
        bigi_ffi:to(_pipe@1)
    end,
    {ok, Int} = case _assert_subject of
        {ok, _} -> _assert_subject;
        _assert_fail ->
            erlang:error(#{gleam_error => let_assert,
                        message => <<"Assertion pattern match failed"/utf8>>,
                        value => _assert_fail,
                        module => <<"ranged_int/builtin/uint8"/utf8>>,
                        function => <<"to_int"/utf8>>,
                        line => 24})
    end,
    Int.

-spec from_bigint_unsafe(bigi:big_int()) -> uint8().
from_bigint_unsafe(Value) ->
    {uint8, Value}.

-spec limits() -> ranged_int@interface:limits(ranged_int@interface:overflowable()).
limits() ->
    ranged_int@interface:overflowable_limits(
        bigi_ffi:from(0),
        bigi_ffi:from(255)
    ).

-spec from_bigint(bigi:big_int()) -> {ok, uint8()} |
    {error, ranged_int@utils:overflow()}.
from_bigint(Value) ->
    ranged_int@interface:from_bigint(
        Value,
        {interface, fun to_bigint/1, fun from_bigint_unsafe/1, fun limits/0}
    ).

-spec from_int(integer()) -> {ok, uint8()} |
    {error, ranged_int@utils:overflow()}.
from_int(Value) ->
    from_bigint(bigi_ffi:from(Value)).

-spec compare(uint8(), uint8()) -> gleam@order:order().
compare(A, B) ->
    ranged_int@interface:compare(
        A,
        B,
        {interface, fun to_bigint/1, fun from_bigint_unsafe/1, fun limits/0}
    ).

-spec add(uint8(), bigi:big_int()) -> {ok, uint8()} |
    {error, ranged_int@utils:overflow()}.
add(A, B) ->
    ranged_int@interface:math_op(
        A,
        B,
        {interface, fun to_bigint/1, fun from_bigint_unsafe/1, fun limits/0},
        fun bigi_ffi:add/2
    ).

-spec subtract(uint8(), bigi:big_int()) -> {ok, uint8()} |
    {error, ranged_int@utils:overflow()}.
subtract(A, B) ->
    ranged_int@interface:math_op(
        A,
        B,
        {interface, fun to_bigint/1, fun from_bigint_unsafe/1, fun limits/0},
        fun bigi_ffi:subtract/2
    ).

-spec multiply(uint8(), bigi:big_int()) -> {ok, uint8()} |
    {error, ranged_int@utils:overflow()}.
multiply(A, B) ->
    ranged_int@interface:math_op(
        A,
        B,
        {interface, fun to_bigint/1, fun from_bigint_unsafe/1, fun limits/0},
        fun bigi_ffi:multiply/2
    ).

-spec divide(uint8(), bigi:big_int()) -> {ok, uint8()} |
    {error, ranged_int@utils:overflow()}.
divide(A, B) ->
    ranged_int@interface:math_op(
        A,
        B,
        {interface, fun to_bigint/1, fun from_bigint_unsafe/1, fun limits/0},
        fun bigi_ffi:divide/2
    ).

-spec divide_no_zero(uint8(), bigi:big_int()) -> {ok,
        {ok, uint8()} | {error, ranged_int@utils:overflow()}} |
    {error, nil}.
divide_no_zero(A, B) ->
    ranged_int@interface:fallible_op(
        A,
        B,
        {interface, fun to_bigint/1, fun from_bigint_unsafe/1, fun limits/0},
        fun bigi_ffi:divide_no_zero/2
    ).

-spec modulo(uint8(), bigi:big_int()) -> {ok, uint8()} |
    {error, ranged_int@utils:overflow()}.
modulo(A, B) ->
    ranged_int@interface:math_op(
        A,
        B,
        {interface, fun to_bigint/1, fun from_bigint_unsafe/1, fun limits/0},
        fun bigi_ffi:modulo/2
    ).

-spec modulo_no_zero(uint8(), bigi:big_int()) -> {ok,
        {ok, uint8()} | {error, ranged_int@utils:overflow()}} |
    {error, nil}.
modulo_no_zero(A, B) ->
    ranged_int@interface:fallible_op(
        A,
        B,
        {interface, fun to_bigint/1, fun from_bigint_unsafe/1, fun limits/0},
        fun bigi_ffi:modulo_no_zero/2
    ).

-spec remainder(uint8(), bigi:big_int()) -> {ok, uint8()} |
    {error, ranged_int@utils:overflow()}.
remainder(A, B) ->
    ranged_int@interface:math_op(
        A,
        B,
        {interface, fun to_bigint/1, fun from_bigint_unsafe/1, fun limits/0},
        fun bigi_ffi:remainder/2
    ).

-spec remainder_no_zero(uint8(), bigi:big_int()) -> {ok,
        {ok, uint8()} | {error, ranged_int@utils:overflow()}} |
    {error, nil}.
remainder_no_zero(A, B) ->
    ranged_int@interface:fallible_op(
        A,
        B,
        {interface, fun to_bigint/1, fun from_bigint_unsafe/1, fun limits/0},
        fun bigi_ffi:remainder_no_zero/2
    ).

-spec power(uint8(), ranged_int@builtin@uint:uint()) -> {ok, uint8()} |
    {error, ranged_int@utils:overflow()}.
power(A, B) ->
    _assert_subject = ranged_int@interface:fallible_op(
        A,
        ranged_int@builtin@uint:to_bigint(B),
        {interface, fun to_bigint/1, fun from_bigint_unsafe/1, fun limits/0},
        fun bigi_ffi:power/2
    ),
    {ok, Result} = case _assert_subject of
        {ok, _} -> _assert_subject;
        _assert_fail ->
            erlang:error(#{gleam_error => let_assert,
                        message => <<"Assertion pattern match failed"/utf8>>,
                        value => _assert_fail,
                        module => <<"ranged_int/builtin/uint8"/utf8>>,
                        function => <<"power"/utf8>>,
                        line => 80})
    end,
    Result.

-spec overflow({ok, uint8()} | {error, ranged_int@utils:overflow()}) -> uint8().
overflow(Op) ->
    ranged_int@interface:overflow(
        Op,
        {interface, fun to_bigint/1, fun from_bigint_unsafe/1, fun limits/0}
    ).

-spec eject({ok, uint8()} | {error, ranged_int@utils:overflow()}) -> bigi:big_int().
eject(Op) ->
    ranged_int@interface:eject(
        Op,
        {interface, fun to_bigint/1, fun from_bigint_unsafe/1, fun limits/0}
    ).