Packages

jsonrpc2_service

0.1.0
0.1.1 0.1.0

Provides the ability to create services in accordance with the JSONRPC 2.0 specification. There is no transport layer, but only tools for creating transport-independent JSONRPC 2.0 services.

HexDocs

Current section

Files

Jump to
Readme
2 Versions
2 Dependencies
Dependants
Files
Activity
jsonrpc2_service lib jsonrpc2 service validator length.ex
Raw

lib/jsonrpc2/service/validator/length.ex 

defmodule JSONRPC2.Service.Validator.Length do

  alias JSONRPC2.Service.Validator.Rule

  alias JSONRPC2.Service.Validator.Number



  use JSONRPC2.Service.Validator.Rule



  @spec check(Rule.value(), Rule.opts()) :: Rule.result()

  def check(value, opts) do

    with {:ok, length} <- get_length(value),

         :ok <- Number.check(length, opts) do

      :ok

    else

      {:error, :wrong_type} ->

        error("length check supports only arrays, strings and objects")



      {:error, msg, opts} ->

        error("length #{msg}", opts)

    end

  end



  defp get_length(param) when is_list(param),

    do: {:ok, length(param)}



  defp get_length(param) when is_binary(param),

    do: {:ok, String.length(param)}



  defp get_length(param) when is_map(param),

    do: {:ok, map_size(param)}



  defp get_length(_param),

    do: {:error, :wrong_type}

end