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Generate Gleam code from OpenAPI 3.x specifications

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oaspec src oaspec@openapi@resolver.erl
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src/oaspec@openapi@resolver.erl 

-module(oaspec@openapi@resolver).

-compile([no_auto_import, nowarn_unused_vars, nowarn_unused_function, nowarn_nomatch, inline]).

-define(FILEPATH, "src/oaspec/openapi/resolver.gleam").

-export([ref_to_name/1, resolve_schema_ref/2]).

-export_type([resolve_error/0]).



-if(?OTP_RELEASE >= 27).

-define(MODULEDOC(Str), -moduledoc(Str)).

-define(DOC(Str), -doc(Str)).

-else.

-define(MODULEDOC(Str), -compile([])).

-define(DOC(Str), -compile([])).

-endif.



-type resolve_error() :: {unresolved_ref, binary()} | {circular_ref, binary()}.



-file("src/oaspec/openapi/resolver.gleam", 20).

?DOC(

    " Resolve a $ref string to its schema name.\n"

    " Example: \"#/components/schemas/User\" -> \"User\"\n"

).

-spec ref_to_name(binary()) -> binary().

ref_to_name(Ref) ->

    _pipe = Ref,

    _pipe@1 = gleam@string:split(_pipe, <<"/"/utf8>>),

    _pipe@2 = gleam@list:last(_pipe@1),

    gleam@result:unwrap(_pipe@2, <<"Unknown"/utf8>>).



-file("src/oaspec/openapi/resolver.gleam", 37).

?DOC(" Internal resolver that tracks visited refs for cycle detection.\n").

-spec resolve_schema_ref_with_seen(

    oaspec@openapi@schema:schema_ref(),

    oaspec@openapi@spec:open_api_spec(oaspec@openapi@spec:resolved()),

    gleam@set:set(binary())

) -> {ok, oaspec@openapi@schema:schema_object()} | {error, resolve_error()}.

resolve_schema_ref_with_seen(Schema_ref, Spec, Seen) ->

    case Schema_ref of

        {inline, Schema} ->

            {ok, Schema};



        {reference, Ref, Name} ->

            case gleam@set:contains(Seen, Ref) of

                true ->

                    {error, {circular_ref, Ref}};



                false ->

                    New_seen = gleam@set:insert(Seen, Ref),

                    case erlang:element(5, Spec) of

                        {some, Components} ->

                            case gleam_stdlib:map_get(

                                erlang:element(2, Components),

                                Name

                            ) of

                                {ok, {inline, Schema@1}} ->

                                    {ok, Schema@1};



                                {ok, {reference, Inner_ref, Inner_name}} ->

                                    resolve_schema_ref_with_seen(

                                        {reference, Inner_ref, Inner_name},

                                        Spec,

                                        New_seen

                                    );



                                {error, _} ->

                                    {error, {unresolved_ref, Ref}}

                            end;



                        none ->

                            {error, {unresolved_ref, Ref}}

                    end

            end

    end.



-file("src/oaspec/openapi/resolver.gleam", 29).

?DOC(

    " Resolve a SchemaRef to a SchemaObject, looking up $ref in components.\n"

    " Tracks seen refs to detect circular references.\n"

).

-spec resolve_schema_ref(

    oaspec@openapi@schema:schema_ref(),

    oaspec@openapi@spec:open_api_spec(oaspec@openapi@spec:resolved())

) -> {ok, oaspec@openapi@schema:schema_object()} | {error, resolve_error()}.

resolve_schema_ref(Schema_ref, Spec) ->

    resolve_schema_ref_with_seen(Schema_ref, Spec, gleam@set:new()).