From b8aa6c4bdab2cd7f338619c15b39b3ee40cc34cd Mon Sep 17 00:00:00 2001
From: SpaceEEC <spaceeec@yahoo.com>
Date: Sat, 3 Nov 2018 14:42:06 +0100
Subject: [PATCH] fix: compilation under elixir 1.6 by hiding since docs behind
 macro

---
 lib/structs.ex                  |  8 +++--
 lib/structs/attachment.ex       |  9 +++--
 lib/structs/audit_log.ex        | 10 ++++--
 lib/structs/audit_log_change.ex | 13 ++++---
 lib/structs/audit_log_entry.ex  | 17 +++++----
 lib/structs/channel.ex          | 12 ++++---
 lib/structs/embed.ex            |  9 +++--
 lib/structs/emoji.ex            | 12 ++++---
 lib/structs/guild.ex            | 10 ++++--
 lib/structs/invite.ex           | 10 ++++--
 lib/structs/member.ex           | 12 ++++---
 lib/structs/message.ex          | 10 ++++--
 lib/structs/overwrite.ex        | 10 ++++--
 lib/structs/permissions.ex      | 40 +++++++++++++--------
 lib/structs/presence.ex         | 10 ++++--
 lib/structs/reaction.ex         | 10 ++++--
 lib/structs/role.ex             | 12 ++++---
 lib/structs/user.ex             | 12 ++++---
 lib/structs/util.ex             | 63 ++++++++++++++++++++++++++++++---
 lib/structs/voice_state.ex      | 10 ++++--
 lib/structs/webhook.ex          | 12 ++++---
 21 files changed, 226 insertions(+), 85 deletions(-)

diff --git a/lib/structs.ex b/lib/structs.ex
index 658b521..a7e44bf 100644
--- a/lib/structs.ex
+++ b/lib/structs.ex
@@ -1,10 +1,12 @@
 defmodule Crux.Structs do
-  @moduledoc since: "0.1.0"
   @moduledoc """
     Provides a unified function to create one or a list of structs, invoking their `create/1` function if available.
   """
 
   alias Crux.Structs.Util
+  require Util
+
+  Util.modulesince("0.1.0")
 
   @doc """
     Can be implemented by structs to transform the inital data.
@@ -69,7 +71,7 @@ defmodule Crux.Structs do
   """
   @spec create(data :: map(), target :: module()) :: struct()
   @spec create(data :: list(), target :: module()) :: list(struct())
-  @doc since: "0.1.0"
+  Util.since("0.1.0")
   def create(data, target)
   def create(nil, _target), do: nil
 
@@ -80,7 +82,7 @@ defmodule Crux.Structs do
   def create(%{__struct__: target} = data, target), do: data
 
   def create(data, target) do
-    if Keyword.has_key?(target.__info__(:functions), :create) do
+    if :erlang.function_exported(target, :create, 1) do
       target.create(data)
     else
       data = Util.atomify(data)
diff --git a/lib/structs/attachment.ex b/lib/structs/attachment.ex
index 5b87655..4e22d6e 100644
--- a/lib/structs/attachment.ex
+++ b/lib/structs/attachment.ex
@@ -1,5 +1,4 @@
 defmodule Crux.Structs.Attachment do
-  @moduledoc since: "0.1.0"
   @moduledoc """
     Represents a Discord [Attachment Object](https://discordapp.com/developers/docs/resources/channel#attachment-object-attachment-structure)
 
@@ -9,6 +8,9 @@ defmodule Crux.Structs.Attachment do
   @behaviour Crux.Structs
 
   alias Crux.Structs.Util
+  require Util
+
+  Util.modulesince("0.1.0")
 
   defstruct(
     id: nil,
@@ -20,7 +22,8 @@ defmodule Crux.Structs.Attachment do
     width: nil
   )
 
-  @typedoc since: "0.1.0"
+  Util.typesince("0.1.0")
+
   @type t :: %__MODULE__{
           id: Crux.Rest.snowflake(),
           filename: String.t(),
@@ -36,6 +39,8 @@ defmodule Crux.Structs.Attachment do
 
   > Automatically invoked by `Crux.Structs.create/2`.
   """
+  Util.since("0.1.0")
+
   def create(data) do
     data =
       data
diff --git a/lib/structs/audit_log.ex b/lib/structs/audit_log.ex
index bdcbcd2..c11a37b 100644
--- a/lib/structs/audit_log.ex
+++ b/lib/structs/audit_log.ex
@@ -1,5 +1,4 @@
 defmodule Crux.Structs.AuditLog do
-  @moduledoc since: "0.1.6"
   @moduledoc """
     Represents a Discord [Audit Log Object](https://discordapp.com/developers/docs/resources/audit-log#audit-log-object)
   """
@@ -7,6 +6,9 @@ defmodule Crux.Structs.AuditLog do
   @behaviour Crux.Structs
 
   alias Crux.Structs.{AuditLogEntry, User, Util, Webhook}
+  require Util
+
+  Util.modulesince("0.1.6")
 
   defstruct(
     webhooks: %{},
@@ -14,7 +16,8 @@ defmodule Crux.Structs.AuditLog do
     audit_log_entries: %{}
   )
 
-  @typedoc since: "0.1.6"
+  Util.typesince("0.1.6")
+
   @type t :: %__MODULE__{
           webhooks: %{Crux.Rest.snowflake() => Webhook.t()},
           users: %{Crux.Rest.snowflake() => User.t()},
@@ -26,7 +29,8 @@ defmodule Crux.Structs.AuditLog do
 
   > Automatically invoked by `Crux.Structs.create/2`.
   """
-  @doc since: "0.1.6"
+  Util.since("0.1.6")
+
   def create(data) do
     data =
       data
diff --git a/lib/structs/audit_log_change.ex b/lib/structs/audit_log_change.ex
index e8dbde3..a87d8e6 100644
--- a/lib/structs/audit_log_change.ex
+++ b/lib/structs/audit_log_change.ex
@@ -1,5 +1,4 @@
 defmodule Crux.Structs.AuditLogChange do
-  @moduledoc since: "0.1.6"
   @moduledoc """
     Represents a Discord [Audit Log Change Object](https://discordapp.com/developers/docs/resources/audit-log#audit-log-change)
   """
@@ -8,6 +7,9 @@ defmodule Crux.Structs.AuditLogChange do
 
   alias Crux.Structs
   alias Crux.Structs.{Overwrite, Role, Util}
+  require Util
+
+  Util.modulesince("0.1.6")
 
   defstruct(
     new_value: nil,
@@ -20,7 +22,8 @@ defmodule Crux.Structs.AuditLogChange do
 
   > Note that the Role object returned by Discord in audit logs is a partial role that only contains id and name.
   """
-  @typedoc since: "0.1.6"
+  Util.typesince("0.1.6")
+
   @type audit_log_change_value ::
           String.t()
           | Crux.Rest.snowflake()
@@ -29,7 +32,8 @@ defmodule Crux.Structs.AuditLogChange do
           | [Role.t()]
           | [Overwrite.t()]
 
-  @typedoc since: "0.1.6"
+  Util.typesince("0.1.6")
+
   @type t :: %__MODULE__{
           new_value: audit_log_change_value() | nil,
           old_value: audit_log_change_value() | nil,
@@ -41,7 +45,8 @@ defmodule Crux.Structs.AuditLogChange do
 
   > Automatically invoked by `Crux.Structs.create/2`.
   """
-  @doc since: "0.1.6"
+  Util.since("0.1.6")
+
   def create(data) do
     data =
       data
diff --git a/lib/structs/audit_log_entry.ex b/lib/structs/audit_log_entry.ex
index a4e0646..9ecb8f5 100644
--- a/lib/structs/audit_log_entry.ex
+++ b/lib/structs/audit_log_entry.ex
@@ -1,5 +1,4 @@
 defmodule Crux.Structs.AuditLogEntry do
-  @moduledoc since: "0.1.6"
   @moduledoc """
     Represents a Discord [Audit Log Object](https://discordapp.com/developers/docs/resources/audit-log)
   """
@@ -7,6 +6,9 @@ defmodule Crux.Structs.AuditLogEntry do
   @behaviour Crux.Structs
 
   alias Crux.Structs.{AuditLogChange, Util}
+  require Util
+
+  Util.modulesince("0.1.6")
 
   @audit_log_events %{
     guild_update: 1,
@@ -40,7 +42,8 @@ defmodule Crux.Structs.AuditLogEntry do
   @typedoc """
     Union type of audit log event name atoms.
   """
-  @typedoc since: "0.1.6"
+  Util.typesince("0.1.6")
+
   @type event_name ::
           :guild_update
           | :channel_create
@@ -75,14 +78,14 @@ defmodule Crux.Structs.AuditLogEntry do
     Returns a map of all audit log event names with their id
   """
   @spec events() :: %{event_name => non_neg_integer()}
-  @doc since: "0.1.6"
+  Util.since("0.1.6")
   def events, do: @audit_log_events
 
   @doc """
     Gets the event name from the action type id
   """
   @spec event_name(action_type :: non_neg_integer()) :: atom()
-  @doc since: "0.1.6"
+  Util.since("0.1.6")
   def event_name(action_type), do: Map.get(@audit_log_events_key, action_type)
 
   defstruct(
@@ -95,7 +98,8 @@ defmodule Crux.Structs.AuditLogEntry do
     reason: nil
   )
 
-  @typedoc since: "0.1.6"
+  Util.typesince("0.1.6")
+
   @type t :: %__MODULE__{
           id: Crux.Rest.snowflake(),
           target_id: Crux.Rest.snowflake(),
@@ -111,7 +115,8 @@ defmodule Crux.Structs.AuditLogEntry do
 
   > Automatically invoked by `Crux.Structs.create/2`.
   """
-  @doc since: "0.1.6"
+  Util.since("0.1.6")
+
   def create(data) do
     data =
       data
diff --git a/lib/structs/channel.ex b/lib/structs/channel.ex
index 57087f1..5cb37ef 100644
--- a/lib/structs/channel.ex
+++ b/lib/structs/channel.ex
@@ -1,5 +1,4 @@
 defmodule Crux.Structs.Channel do
-  @moduledoc since: "0.1.0"
   @moduledoc """
   Represents a Discord [Channel Object](https://discordapp.com/developers/docs/resources/channel#channel-object-channel-structure).
 
@@ -33,6 +32,9 @@ defmodule Crux.Structs.Channel do
   @behaviour Crux.Structs
 
   alias Crux.Structs.{Overwrite, Util}
+  require Util
+
+  Util.modulesince("0.1.0")
 
   defstruct(
     application_id: nil,
@@ -55,7 +57,8 @@ defmodule Crux.Structs.Channel do
     user_limit: nil
   )
 
-  @typedoc since: "0.1.0"
+  Util.typesince("0.1.0")
+
   @type t :: %__MODULE__{
           application_id: Crux.Rest.snowflake(),
           bitrate: integer(),
@@ -82,7 +85,8 @@ defmodule Crux.Structs.Channel do
 
   > Automatically invoked by `Crux.Structs.create/2`
   """
-  @doc since: "0.1.0"
+  Util.since("0.1.0")
+
   def create(data) do
     data =
       data
@@ -116,7 +120,7 @@ defmodule Crux.Structs.Channel do
   ```
   """
   @spec to_mention(user :: Crux.Structs.Channel.t()) :: String.t()
-  @doc since: "0.1.1"
+  Util.since("0.1.1")
   def to_mention(%__MODULE__{id: id}), do: "<##{id}>"
 
   defimpl String.Chars, for: Crux.Structs.Channel do
diff --git a/lib/structs/embed.ex b/lib/structs/embed.ex
index 6f4956b..e02579e 100644
--- a/lib/structs/embed.ex
+++ b/lib/structs/embed.ex
@@ -1,5 +1,4 @@
 defmodule Crux.Structs.Embed do
-  @moduledoc since: "0.1.0"
   @moduledoc """
   Represents a Discord [Embed Object](https://discordapp.com/developers/docs/resources/channel#embed-object-embed-structure).
 
@@ -8,6 +7,11 @@ defmodule Crux.Structs.Embed do
 
   @behaviour Crux.Structs
 
+  alias Crux.Structs.Util
+  require Util
+
+  Util.modulesince("0.1.0")
+
   defstruct(
     title: nil,
     type: "rich",
@@ -24,7 +28,8 @@ defmodule Crux.Structs.Embed do
     fields: []
   )
 
-  @typedoc since: "0.1.0"
+  Util.typesince("0.1.0")
+
   @type t :: %__MODULE__{
           title: String.t() | nil,
           type: String.t() | nil,
diff --git a/lib/structs/emoji.ex b/lib/structs/emoji.ex
index 22b7f34..9461640 100644
--- a/lib/structs/emoji.ex
+++ b/lib/structs/emoji.ex
@@ -1,5 +1,4 @@
 defmodule Crux.Structs.Emoji do
-  @moduledoc since: "0.1.0"
   @moduledoc """
   Represents a Discord [Emoji Object](https://discordapp.com/developers/docs/resources/emoji#emoji-object-emoji-structure).
 
@@ -10,6 +9,9 @@ defmodule Crux.Structs.Emoji do
   @behaviour Crux.Structs
 
   alias Crux.Structs.Util
+  require Util
+
+  Util.modulesince("0.1.0")
 
   defstruct(
     animated: nil,
@@ -21,7 +23,8 @@ defmodule Crux.Structs.Emoji do
     managed: nil
   )
 
-  @typedoc since: "0.1.0"
+  Util.typesince("0.1.0")
+
   @type t :: %__MODULE__{
           animated: boolean() | nil,
           id: Crux.Rest.snowflake() | nil,
@@ -37,7 +40,8 @@ defmodule Crux.Structs.Emoji do
 
   > Automatically invoked by `Crux.Structs.create/2`.
   """
-  @doc since: "0.1.0"
+  Util.since("0.1.0")
+
   def create(data) do
     data =
       data
@@ -93,7 +97,7 @@ defmodule Crux.Structs.Emoji do
   """
   @spec to_identifier(emoji :: Crux.Structs.Emoji.t() | Crux.Structs.Reaction.t() | String.t()) ::
           String.t()
-  @doc since: "0.1.1"
+  Util.since("0.1.1")
   def to_identifier(%Crux.Structs.Reaction{emoji: emoji}), do: to_identifier(emoji)
   def to_identifier(%__MODULE__{id: nil, name: name}), do: name |> URI.encode_www_form()
   def to_identifier(%__MODULE__{id: id, name: name, animated: true}), do: "a:#{name}:#{id}"
diff --git a/lib/structs/guild.ex b/lib/structs/guild.ex
index e47cb77..2d983a8 100644
--- a/lib/structs/guild.ex
+++ b/lib/structs/guild.ex
@@ -1,5 +1,4 @@
 defmodule Crux.Structs.Guild do
-  @moduledoc since: "0.1.0"
   @moduledoc """
   Represents a Discord [Guild Object](https://discordapp.com/developers/docs/resources/guild#guild-object-guild-structure).
 
@@ -12,6 +11,9 @@ defmodule Crux.Structs.Guild do
   @behaviour Crux.Structs
 
   alias Crux.Structs.{Member, Role, Util, VoiceState}
+  require Util
+
+  Util.modulesince("0.1.0")
 
   defstruct(
     id: nil,
@@ -42,7 +44,8 @@ defmodule Crux.Structs.Guild do
     # presences: %{}
   )
 
-  @typedoc since: "0.1.0"
+  Util.typesince("0.1.0")
+
   @type t :: %__MODULE__{
           id: Crux.Rest.snowflake(),
           name: String.t(),
@@ -77,7 +80,8 @@ defmodule Crux.Structs.Guild do
   > Automatically invoked by `Crux.Structs.create/2`.
   """
   # TODO: Write a test
-  @doc since: "0.1.0"
+  Util.since("0.1.0")
+
   def create(data) do
     data =
       data
diff --git a/lib/structs/invite.ex b/lib/structs/invite.ex
index 0971a7f..e7959cf 100644
--- a/lib/structs/invite.ex
+++ b/lib/structs/invite.ex
@@ -1,5 +1,4 @@
 defmodule Crux.Structs.Invite do
-  @moduledoc since: "0.1.0"
   @moduledoc """
   Represents a Discord [Invite Object](https://discordapp.com/developers/docs/resources/invite#invite-object)
 
@@ -31,6 +30,9 @@ defmodule Crux.Structs.Invite do
 
   alias Crux.Structs
   alias Crux.Structs.{Channel, Guild, User, Util}
+  require Util
+
+  Util.modulesince("0.1.0")
 
   defstruct(
     # always
@@ -49,7 +51,8 @@ defmodule Crux.Structs.Invite do
     approximate_member_count: nil
   )
 
-  @typedoc since: "0.1.0"
+  Util.typesince("0.1.0")
+
   @type t :: %__MODULE__{
           code: String.t(),
           guild: Guild.t(),
@@ -70,7 +73,8 @@ defmodule Crux.Structs.Invite do
 
   > Automatically invoked by `Crux.Structs.create/2`.
   """
-  @doc since: "0.1.0"
+  Util.since("0.1.0")
+
   def create(data) do
     data =
       data
diff --git a/lib/structs/member.ex b/lib/structs/member.ex
index b15bf24..3187c9c 100644
--- a/lib/structs/member.ex
+++ b/lib/structs/member.ex
@@ -1,5 +1,4 @@
 defmodule Crux.Structs.Member do
-  @moduledoc since: "0.1.0"
   @moduledoc """
     Represents a Discord [Guild Member Object](https://discordapp.com/developers/docs/resources/guild#guild-member-object-guild-member-structure).
 
@@ -10,6 +9,9 @@ defmodule Crux.Structs.Member do
   @behaviour Crux.Structs
 
   alias Crux.Structs.Util
+  require Util
+
+  Util.modulesince("0.1.0")
 
   defstruct(
     user: nil,
@@ -21,7 +23,8 @@ defmodule Crux.Structs.Member do
     guild_id: nil
   )
 
-  @typedoc since: "0.1.0"
+  Util.typesince("0.1.0")
+
   @type t :: %__MODULE__{
           user: Crux.Rest.snowflake(),
           nick: String.t() | nil,
@@ -37,7 +40,8 @@ defmodule Crux.Structs.Member do
 
   > Automatically invoked by `Crux.Structs.create/2`.
   """
-  @doc since: "0.1.0"
+  Util.since("0.1.0")
+
   def create(data) do
     data =
       data
@@ -68,7 +72,7 @@ defmodule Crux.Structs.Member do
     ```
   """
   @spec to_mention(user :: Crux.Structs.Member.t()) :: String.t()
-  @doc since: "0.1.1"
+  Util.since("0.1.1")
   def to_mention(%__MODULE__{user: id, nick: nil}), do: "<@#{id}>"
   def to_mention(%__MODULE__{user: id}), do: "<@!#{id}>"
 
diff --git a/lib/structs/message.ex b/lib/structs/message.ex
index 0f21c4c..eddead7 100644
--- a/lib/structs/message.ex
+++ b/lib/structs/message.ex
@@ -1,5 +1,4 @@
 defmodule Crux.Structs.Message do
-  @moduledoc since: "0.1.0"
   @moduledoc """
     Represents a Discord [Message Object](https://discordapp.com/developers/docs/resources/channel#message-object-message-structure).
 
@@ -11,6 +10,9 @@ defmodule Crux.Structs.Message do
 
   alias Crux.Structs
   alias Crux.Structs.{Attachment, Embed, Member, Reaction, User, Util}
+  require Util
+
+  Util.modulesince("0.1.0")
 
   defstruct(
     attachments: [],
@@ -34,7 +36,8 @@ defmodule Crux.Structs.Message do
     webhook_id: nil
   )
 
-  @typedoc since: "0.1.0"
+  Util.typesince("0.1.0")
+
   @type t :: %__MODULE__{
           attachments: [Attachment.t()],
           # Might be webhook
@@ -63,7 +66,8 @@ defmodule Crux.Structs.Message do
 
   > Automatically invoked by `Crux.Structs.create/2`.
   """
-  @doc since: "0.1.0"
+  Util.since("0.1.0")
+
   def create(data) do
     data =
       data
diff --git a/lib/structs/overwrite.ex b/lib/structs/overwrite.ex
index e67dc9e..c694804 100644
--- a/lib/structs/overwrite.ex
+++ b/lib/structs/overwrite.ex
@@ -1,5 +1,4 @@
 defmodule Crux.Structs.Overwrite do
-  @moduledoc since: "0.1.0"
   @moduledoc """
     Represents a Discord [Overwrite Object](https://discordapp.com/developers/docs/resources/channel#overwrite-object-overwrite-structure).
   """
@@ -7,6 +6,9 @@ defmodule Crux.Structs.Overwrite do
   @behaviour Crux.Structs
 
   alias Crux.Structs.Util
+  require Util
+
+  Util.modulesince("0.1.0")
 
   defstruct(
     id: nil,
@@ -15,7 +17,8 @@ defmodule Crux.Structs.Overwrite do
     deny: 0
   )
 
-  @typedoc since: "0.1.0"
+  Util.typesince("0.1.0")
+
   @type t :: %__MODULE__{
           id: Crux.Rest.snowflake(),
           type: String.t(),
@@ -28,7 +31,8 @@ defmodule Crux.Structs.Overwrite do
 
   > Automatically invoked by `Crux.Structs.create/2`.
   """
-  @doc since: "0.1.0"
+  Util.since("0.1.0")
+
   def create(data) do
     data =
       data
diff --git a/lib/structs/permissions.ex b/lib/structs/permissions.ex
index 8e30c86..b225f9b 100644
--- a/lib/structs/permissions.ex
+++ b/lib/structs/permissions.ex
@@ -1,11 +1,14 @@
 defmodule Crux.Structs.Permissions do
-  @moduledoc since: "0.1.3"
   @moduledoc """
     Custom non discord api struct to help with working with permissions.
   """
   use Bitwise
 
   alias Crux.Structs
+  alias Crux.Structs.Util
+  require Util
+
+  Util.modulesince("0.1.3")
 
   @permissions %{
     create_instant_invite: 1 <<< 0,
@@ -44,7 +47,7 @@ defmodule Crux.Structs.Permissions do
     Returns a map of permissions, keyed under their permission name with the bit value.
   """
   @spec permissions() :: %{permission_name() => non_neg_integer()}
-  @doc since: "0.1.3"
+  Util.since("0.1.3")
   def permissions(), do: @permissions
 
   @permission_names @permissions |> Map.keys()
@@ -52,7 +55,7 @@ defmodule Crux.Structs.Permissions do
   Returns a list of permission keys.
   """
   @spec permission_names() :: [permission_name()]
-  @doc since: "0.1.3"
+  Util.since("0.1.3")
   def permission_names(), do: @permission_names
 
   @permission_all @permissions |> Map.values() |> Enum.reduce(&|||/2)
@@ -60,13 +63,14 @@ defmodule Crux.Structs.Permissions do
     Returns the integer value of all permissions together.
   """
   @spec permission_all :: pos_integer()
-  @doc since: "0.1.3"
+  Util.since("0.1.3")
   def permission_all(), do: @permission_all
 
   @typedoc """
     Union type of all valid permission name atoms
   """
-  @typedoc since: "0.1.3"
+  Util.typesince("0.1.3")
+
   @type permission_name ::
           :create_instant_invite
           | :kick_members
@@ -103,7 +107,8 @@ defmodule Crux.Structs.Permissions do
   @typedoc """
     Represents a `Crux.Struct.Permissions`.
   """
-  @typedoc since: "0.1.3"
+  Util.typesince("0.1.3")
+
   @type t :: %__MODULE__{
           bitfield: non_neg_integer()
         }
@@ -111,7 +116,7 @@ defmodule Crux.Structs.Permissions do
   @typedoc """
     All valid types which can be directly resolved into a permissions bitfield.
   """
-  @typedoc since: "0.1.3"
+  Util.typesince("0.1.3")
   @type permissions :: t() | [permission_name()] | non_neg_integer() | permission_name()
 
   @doc ~S"""
@@ -146,7 +151,7 @@ defmodule Crux.Structs.Permissions do
   ```
   """
   @spec resolve(permissions :: permissions()) :: non_neg_integer()
-  @doc since: "0.1.3"
+  Util.since("0.1.3")
   def resolve(permissions)
 
   def resolve(%__MODULE__{bitfield: bitfield}), do: bitfield
@@ -179,7 +184,7 @@ defmodule Crux.Structs.Permissions do
     Creates a new `Crux.Structs.Permissions` struct from a valid `t:permissions/0`.
   """
   @spec new(permissions :: permissions()) :: t()
-  @doc since: "0.1.3"
+  Util.since("0.1.3")
   def new(permissions), do: %__MODULE__{bitfield: resolve(permissions)}
 
   @doc """
@@ -188,7 +193,8 @@ defmodule Crux.Structs.Permissions do
   > The administrator flag implicitly grants all permissions.
   """
   @spec to_map(permissions :: permissions()) :: %{permission_name() => boolean()}
-  @doc since: "0.1.3"
+  Util.since("0.1.3")
+
   def to_map(permissions) do
     permissions = resolve(permissions)
 
@@ -211,7 +217,8 @@ defmodule Crux.Structs.Permissions do
     ```
   """
   @spec to_list(permissions :: permissions()) :: [permission_name()]
-  @doc since: "0.1.3"
+  Util.since("0.1.3")
+
   def to_list(permissions) do
     permissions = resolve(permissions)
 
@@ -232,7 +239,8 @@ defmodule Crux.Structs.Permissions do
     ```
   """
   @spec add(base :: permissions(), to_add :: permissions()) :: t()
-  @doc since: "0.1.3"
+  Util.since("0.1.3")
+
   def add(base, to_add) do
     to_add = to_add |> resolve()
 
@@ -254,7 +262,8 @@ defmodule Crux.Structs.Permissions do
     ```
   """
   @spec remove(base :: permissions(), to_remove :: permissions()) :: t()
-  @doc since: "0.1.3"
+  Util.since("0.1.3")
+
   def remove(base, to_remove) do
     to_remove = to_remove |> resolve() |> bnot()
 
@@ -285,7 +294,8 @@ defmodule Crux.Structs.Permissions do
     ```
   """
   @spec has(permissions(), permissions()) :: boolean()
-  @doc since: "0.1.3"
+  Util.since("0.1.3")
+
   def has(current, want) do
     current = resolve(current)
 
@@ -310,7 +320,7 @@ defmodule Crux.Structs.Permissions do
           guild :: Structs.Guild.t(),
           channel :: Structs.Channel.t() | nil
         ) :: t()
-  @doc since: "0.1.3"
+  Util.since("0.1.3")
   def from(member, guild, channel \\ nil)
   def from(%Structs.Member{user: user_id}, guild, channel), do: from(user_id, guild, channel)
   def from(%Structs.User{id: user_id}, guild, channel), do: from(user_id, guild, channel)
diff --git a/lib/structs/presence.ex b/lib/structs/presence.ex
index ae7d498..58a8c5b 100644
--- a/lib/structs/presence.ex
+++ b/lib/structs/presence.ex
@@ -1,5 +1,4 @@
 defmodule Crux.Structs.Presence do
-  @moduledoc since: "0.1.0"
   @moduledoc """
     Represents a Discord [Presence Object](https://discordapp.com/developers/docs/topics/gateway#presence-update-presence-update-event-fields).
 
@@ -10,6 +9,9 @@ defmodule Crux.Structs.Presence do
   @behaviour Crux.Structs
 
   alias Crux.Structs.Util
+  require Util
+
+  Util.modulesince("0.1.0")
 
   defstruct(
     user: nil,
@@ -19,7 +21,8 @@ defmodule Crux.Structs.Presence do
     status: "offline"
   )
 
-  @typedoc since: "0.1.0"
+  Util.typesince("0.1.0")
+
   @type t :: %__MODULE__{
           user: Crux.Rest.snowflake(),
           # roles: [Crux.Rest.snowflake()],
@@ -33,7 +36,8 @@ defmodule Crux.Structs.Presence do
 
   > Automatically invoked by `Crux.Structs.create/2`.
   """
-  @doc since: "0.1.0"
+  Util.since("0.1.0")
+
   def create(data) do
     data =
       data
diff --git a/lib/structs/reaction.ex b/lib/structs/reaction.ex
index 8f33d9a..cf4725e 100644
--- a/lib/structs/reaction.ex
+++ b/lib/structs/reaction.ex
@@ -1,5 +1,4 @@
 defmodule Crux.Structs.Reaction do
-  @moduledoc since: "0.1.0"
   @moduledoc """
     Represents a Discord [Reaction Object](https://discordapp.com/developers/docs/resources/channel#reaction-object).
   """
@@ -8,6 +7,9 @@ defmodule Crux.Structs.Reaction do
 
   alias Crux.Structs
   alias Crux.Structs.{Util, Emoji}
+  require Util
+
+  Util.modulesince("0.1.0")
 
   defstruct(
     count: nil,
@@ -15,7 +17,8 @@ defmodule Crux.Structs.Reaction do
     emoji: nil
   )
 
-  @typedoc since: "0.1.0"
+  Util.typesince("0.1.0")
+
   @type t :: %__MODULE__{
           count: integer(),
           me: boolean,
@@ -27,7 +30,8 @@ defmodule Crux.Structs.Reaction do
 
   > Automatically invoked by `Crux.Structs.create/2`.
   """
-  @doc since: "0.1.0"
+  Util.since("0.1.0")
+
   def create(data) do
     data =
       data
diff --git a/lib/structs/role.ex b/lib/structs/role.ex
index 824a145..9cfd991 100644
--- a/lib/structs/role.ex
+++ b/lib/structs/role.ex
@@ -1,5 +1,4 @@
 defmodule Crux.Structs.Role do
-  @moduledoc since: "0.1.0"
   @moduledoc """
     Represents a Discord [Role Object](https://discordapp.com/developers/docs/topics/permissions#role-object-role-structure).
   """
@@ -7,6 +6,9 @@ defmodule Crux.Structs.Role do
   @behaviour Crux.Structs
 
   alias Crux.Structs.Util
+  require Util
+
+  Util.modulesince("0.1.0")
 
   defstruct(
     id: nil,
@@ -20,7 +22,8 @@ defmodule Crux.Structs.Role do
     guild_id: nil
   )
 
-  @typedoc since: "0.1.0"
+  Util.typesince("0.1.0")
+
   @type t :: %__MODULE__{
           id: Crux.Rest.snowflake(),
           name: String.t(),
@@ -38,7 +41,8 @@ defmodule Crux.Structs.Role do
 
   > Automatically invoked by `Crux.Structs.create/2`.
   """
-  @doc since: "0.1.0"
+  Util.since("0.1.0")
+
   def create(data) do
     data =
       data
@@ -61,7 +65,7 @@ defmodule Crux.Structs.Role do
     ```
   """
   @spec to_mention(user :: Crux.Structs.Role.t()) :: String.t()
-  @doc since: "0.1.1"
+  Util.since("0.1.1")
   def to_mention(%__MODULE__{id: id}), do: "<@&#{id}>"
 
   defimpl String.Chars, for: Crux.Structs.Role do
diff --git a/lib/structs/user.ex b/lib/structs/user.ex
index c146bf7..cdf5874 100644
--- a/lib/structs/user.ex
+++ b/lib/structs/user.ex
@@ -1,5 +1,4 @@
 defmodule Crux.Structs.User do
-  @moduledoc since: "0.1.0"
   @moduledoc """
     Represents a Discord [User Object](https://discordapp.com/developers/docs/resources/user#user-object-user-structure)
   """
@@ -7,6 +6,9 @@ defmodule Crux.Structs.User do
   @behaviour Crux.Structs
 
   alias Crux.Structs.Util
+  require Util
+
+  Util.modulesince("0.1.0")
 
   defstruct(
     avatar: nil,
@@ -16,7 +18,8 @@ defmodule Crux.Structs.User do
     username: nil
   )
 
-  @typedoc since: "0.1.0"
+  Util.typesince("0.1.0")
+
   @type t :: %__MODULE__{
           avatar: String.t() | nil,
           bot: boolean(),
@@ -30,7 +33,8 @@ defmodule Crux.Structs.User do
 
   > Automatically invoked by `Crux.Structs.create/2`.
   """
-  @doc since: "0.1.0"
+  Util.since("0.1.0")
+
   def create(data) do
     data =
       data
@@ -51,7 +55,7 @@ defmodule Crux.Structs.User do
     ```
   """
   @spec to_mention(user :: Crux.Structs.User.t()) :: String.t()
-  @doc since: "0.1.1"
+  Util.since("0.1.1")
   def to_mention(%__MODULE__{id: id}), do: "<@#{id}>"
 
   defimpl String.Chars, for: Crux.Structs.User do
diff --git a/lib/structs/util.ex b/lib/structs/util.ex
index 7c4b19f..8bf52ff 100644
--- a/lib/structs/util.ex
+++ b/lib/structs/util.ex
@@ -1,11 +1,14 @@
 defmodule Crux.Structs.Util do
-  @moduledoc since: "0.1.0"
   @moduledoc """
     Collection of util functions.
   """
 
   alias Crux.Structs
 
+  if Version.compare(System.version(), "1.7.0") != :lt do
+    @moduledoc since: "0.1.0"
+  end
+
   @doc ~s"""
     Converts a string, likely Discord snowflake, to an integer
 
@@ -27,7 +30,12 @@ defmodule Crux.Structs.Util do
     ```
   """
   @spec id_to_int(id :: String.t() | integer() | nil) :: integer() | nil | no_return()
-  @doc since: "0.1.0"
+  if Version.compare(System.version(), "1.7.0") != :lt do
+    @doc since: "0.1.0"
+  else
+    @since "0.1.0"
+  end
+
   def id_to_int(str) when is_bitstring(str), do: String.to_integer(str)
   def id_to_int(already) when is_integer(already), do: already
   def id_to_int(nil), do: nil
@@ -82,7 +90,12 @@ defmodule Crux.Structs.Util do
 
   """
   @spec raw_data_to_map(data :: list, target :: module(), key :: atom()) :: map()
-  @doc since: "0.1.0"
+  if Version.compare(System.version(), "1.7.0") != :lt do
+    @doc since: "0.1.0"
+  else
+    @since "0.1.0"
+  end
+
   def raw_data_to_map(data, target, key \\ :id) do
     Structs.create(data, target)
     |> Map.new(fn struct -> {Map.fetch!(struct, key), struct} end)
@@ -107,7 +120,12 @@ defmodule Crux.Structs.Util do
     ```
   """
   @spec string_to_atom(input :: String.t() | atom()) :: atom()
-  @doc since: "0.1.0"
+  if Version.compare(System.version(), "1.7.0") != :lt do
+    @doc since: "0.1.0"
+  else
+    @since "0.1.0"
+  end
+
   def string_to_atom(string) when is_bitstring(string), do: String.to_atom(string)
   def string_to_atom(atom) when is_atom(atom), do: atom
 
@@ -151,7 +169,12 @@ defmodule Crux.Structs.Util do
     ```
   """
   @spec atomify(input :: map() | list()) :: map() | list()
-  @doc since: "0.1.0"
+  if Version.compare(System.version(), "1.7.0") != :lt do
+    @doc since: "0.1.0"
+  else
+    @since "0.1.0"
+  end
+
   def atomify(input)
   def atomify(%{__struct__: _struct} = struct), do: struct |> Map.from_struct() |> atomify()
   def atomify(%{} = map), do: Map.new(map, &atomify_kv/1)
@@ -159,4 +182,34 @@ defmodule Crux.Structs.Util do
   def atomify(other), do: other
 
   defp atomify_kv({k, v}), do: {string_to_atom(k), atomify(v)}
+
+  # TODO: Remove this as soon as 1.7.0 is required
+  if Version.compare(System.version(), "1.7.0") != :lt do
+    defmacro since(version) when is_binary(version) do
+      quote do
+        @doc since: unquote(version)
+      end
+    end
+
+    defmacro modulesince(version) when is_binary(version) do
+      quote do
+        @moduledoc since: unquote(version)
+      end
+    end
+
+    defmacro typesince(version) when is_binary(version) do
+      quote do
+        @typedoc since: unquote(version)
+      end
+    end
+  else
+    defmacro since(version) when is_binary(version) do
+      quote do
+        @since unquote(version)
+      end
+    end
+
+    defmacro modulesince(version) when is_binary(version), do: nil
+    defmacro typesince(version) when is_binary(version), do: nil
+  end
 end
diff --git a/lib/structs/voice_state.ex b/lib/structs/voice_state.ex
index 47eedd2..0eb73bc 100644
--- a/lib/structs/voice_state.ex
+++ b/lib/structs/voice_state.ex
@@ -1,5 +1,4 @@
 defmodule Crux.Structs.VoiceState do
-  @moduledoc since: "0.1.0"
   @moduledoc """
     Represents a Discord [Voice State Object](https://discordapp.com/developers/docs/resources/voice#voice-state-object-voice-state-structure)
   """
@@ -7,6 +6,9 @@ defmodule Crux.Structs.VoiceState do
   @behaviour Crux.Structs
 
   alias Crux.Structs.Util
+  require Util
+
+  Util.modulesince("0.1.0")
 
   defstruct(
     guild_id: nil,
@@ -21,7 +23,8 @@ defmodule Crux.Structs.VoiceState do
     suppress: nil
   )
 
-  @typedoc since: "0.1.0"
+  Util.typesince("0.1.0")
+
   @type t :: %__MODULE__{
           guild_id: Crux.Rest.snowflake(),
           channel_id: Crux.Rest.snowflake() | nil,
@@ -39,7 +42,8 @@ defmodule Crux.Structs.VoiceState do
 
   > Automatically invoked by `Crux.Structs.create/2`.
   """
-  @doc since: "0.1.0"
+  Util.since("0.1.0")
+
   def create(data) do
     data =
       data
diff --git a/lib/structs/webhook.ex b/lib/structs/webhook.ex
index a44c19e..971fd8c 100644
--- a/lib/structs/webhook.ex
+++ b/lib/structs/webhook.ex
@@ -1,5 +1,4 @@
 defmodule Crux.Structs.Webhook do
-  @moduledoc since: "0.1.6"
   @moduledoc """
     Represents a Discord [Webhook Object](https://discordapp.com/developers/docs/resources/webhook#webhook-object)
 
@@ -10,6 +9,9 @@ defmodule Crux.Structs.Webhook do
   @behaviour Crux.Structs
 
   alias Crux.Structs.Util
+  require Util
+
+  Util.modulesince("0.1.6")
 
   defstruct(
     avatar: nil,
@@ -21,7 +23,8 @@ defmodule Crux.Structs.Webhook do
     user: nil
   )
 
-  @typedoc since: "0.1.6"
+  Util.typesince("0.1.6")
+
   @type t :: %__MODULE__{
           avatar: String.t() | nil,
           id: Crux.Rest.snowflake(),
@@ -37,7 +40,8 @@ defmodule Crux.Structs.Webhook do
 
   > Automatically invoked by `Crux.Structs.create/2`.
   """
-  @doc since: "0.1.6"
+  Util.since("0.1.6")
+
   def create(data) do
     data =
       data
@@ -63,7 +67,7 @@ defmodule Crux.Structs.Webhook do
     ```
   """
   @spec to_mention(webhook :: Crux.Structs.Webhook.t()) :: String.t()
-  @doc since: "0.1.6"
+  Util.since("0.1.6")
   def to_mention(%__MODULE__{id: id}), do: "<@#{id}>"
 
   defimpl String.Chars, for: Crux.Structs.Webhook do