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gleam_stdlib

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A standard library for the Gleam programming language

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gleam_stdlib gen src gleam@dynamic.erl
Raw

gen/src/gleam@dynamic.erl 

-module(gleam@dynamic).

-compile(no_auto_import).



-export([from/1, unsafe_coerce/1, bit_string/1, string/1, int/1, float/1, atom/1, bool/1, thunk/1, list/1, typed_list/2, option/2, field/2, element/2, tuple2/1, typed_tuple2/3, map/1, any/2]).



from(A) ->

    gleam_stdlib:identity(A).



unsafe_coerce(A) ->

    gleam_stdlib:identity(A).



bit_string(A) ->

    gleam_stdlib:decode_bit_string(A).



string(From) ->

    gleam@result:then(

        gleam_stdlib:decode_bit_string(From),

        fun(Raw) -> case gleam@bit_string:to_string(Raw) of

                {ok, String} ->

                    {ok, String};



                {error, nil} ->

                    {error, <<"Expected a string, got a bit_string"/utf8>>}

            end end

    ).



int(A) ->

    gleam_stdlib:decode_int(A).



float(A) ->

    gleam_stdlib:decode_float(A).



atom(A) ->

    gleam_stdlib:decode_atom(A).



bool(A) ->

    gleam_stdlib:decode_bool(A).



thunk(A) ->

    gleam_stdlib:decode_thunk(A).



list(A) ->

    gleam_stdlib:decode_list(A).



typed_list(Dynamic, DecoderType) ->

    gleam@result:then(

        gleam_stdlib:decode_list(Dynamic),

        fun(GleamCaptureVariable) ->

            gleam@list:try_map(GleamCaptureVariable, DecoderType)

        end

    ).



option(Dynamic, Decoder) ->

    {ok, Null} = gleam@atom:from_string(<<"null"/utf8>>),

    case {gleam_stdlib:decode_atom(Dynamic), Decoder(Dynamic)} of

        {{ok, Atom}, _} when Atom =:= Null ->

            {ok, none};



        {_, {ok, Result}} ->

            {ok, {some, Result}};



        {_, {error, Msg}} ->

            {error, Msg}

    end.



field(A, B) ->

    gleam_stdlib:decode_field(A, B).



element(A, B) ->

    gleam_stdlib:decode_element(A, B).



tuple2(A) ->

    gleam_stdlib:decode_tuple2(A).



typed_tuple2(Tup, DecodeFirst, DecodeSecond) ->

    case gleam_stdlib:decode_tuple2(Tup) of

        {error, GleamTryError} -> {error, GleamTryError};

        {ok, {First, Second}} ->

            case DecodeFirst(First) of

                {error, GleamTryError@1} -> {error, GleamTryError@1};

                {ok, A} ->

                    case DecodeSecond(Second) of

                        {error, GleamTryError@2} -> {error, GleamTryError@2};

                        {ok, B} ->

                            {ok, {A, B}}

                    end

            end

    end.



map(A) ->

    gleam_stdlib:decode_map(A).



any(Data, Decoders) ->

    gleam@result:map_error(

        gleam@list:find_map(Decoders, fun(Decoder) -> Decoder(Data) end),

        fun(_) -> <<"Unexpected value"/utf8>> end

    ).