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// This file is part of Substrate.

// Copyright (C) Parity Technologies (UK) Ltd.
// SPDX-License-Identifier: Apache-2.0

// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// 	http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

//! Some instance placeholder to be used in [`frame_support::pallet`] attribute macro.
//!
//! [`frame_support::pallet`] attribute macro does only requires the instance generic `I` to be
//! static (contrary to `decl_*` macro which requires instance generic to implement
//! [`frame_support::traits::Instance`]).
//!
//! Thus support provides some instance types to be used, This allow some instantiable pallet to
//! depend on specific instance of another:
//! ```
//! # mod another_pallet { pub trait Config<I: 'static = ()> {} }
//! pub trait Config<I: 'static = ()>: another_pallet::Config<I> {}
//! ```
//!
//! NOTE: [`frame_support::pallet`] will reexport them inside the module, in order to make them
//! accessible to [`frame_support::construct_runtime`].

/// `Instance1` to be used for instantiable pallets defined with the
/// [`#[pallet]`](`frame_support::pallet`) macro. Instances 2-16 are also available but are hidden
/// from docs.
#[derive(Clone, Copy, PartialEq, Eq, crate::RuntimeDebugNoBound)]
pub struct Instance1;

/// `Instance2` to be used for instantiable pallets defined with the `#[pallet]` macro.
#[doc(hidden)]
#[derive(Clone, Copy, PartialEq, Eq, crate::RuntimeDebugNoBound)]
pub struct Instance2;

/// `Instance3` to be used for instantiable pallets defined with the `#[pallet]` macro.
#[doc(hidden)]
#[derive(Clone, Copy, PartialEq, Eq, crate::RuntimeDebugNoBound)]
pub struct Instance3;

/// `Instance4` to be used for instantiable pallets defined with the `#[pallet]` macro.
#[doc(hidden)]
#[derive(Clone, Copy, PartialEq, Eq, crate::RuntimeDebugNoBound)]
pub struct Instance4;

/// `Instance5` to be used for instantiable pallets defined with the `#[pallet]` macro.
#[doc(hidden)]
#[derive(Clone, Copy, PartialEq, Eq, crate::RuntimeDebugNoBound)]
pub struct Instance5;

/// `Instance6` to be used for instantiable pallets defined with the `#[pallet]` macro.
#[doc(hidden)]
#[derive(Clone, Copy, PartialEq, Eq, crate::RuntimeDebugNoBound)]
pub struct Instance6;

/// `Instance7` to be used for instantiable pallets defined with the `#[pallet]` macro.
#[doc(hidden)]
#[derive(Clone, Copy, PartialEq, Eq, crate::RuntimeDebugNoBound)]
pub struct Instance7;

/// `Instance8` to be used for instantiable pallets defined with the `#[pallet]` macro.
#[doc(hidden)]
#[derive(Clone, Copy, PartialEq, Eq, crate::RuntimeDebugNoBound)]
pub struct Instance8;

/// `Instance9` to be used for instantiable pallets defined with the `#[pallet]` macro.
#[doc(hidden)]
#[derive(Clone, Copy, PartialEq, Eq, crate::RuntimeDebugNoBound)]
pub struct Instance9;

/// `Instance10` to be used for instantiable pallets defined with the `#[pallet]` macro.
#[doc(hidden)]
#[derive(Clone, Copy, PartialEq, Eq, crate::RuntimeDebugNoBound)]
pub struct Instance10;

/// `Instance11` to be used for instantiable pallets defined with the `#[pallet]` macro.
#[doc(hidden)]
#[derive(Clone, Copy, PartialEq, Eq, crate::RuntimeDebugNoBound)]
pub struct Instance11;

/// `Instance12` to be used for instantiable pallets defined with the `#[pallet]` macro.
#[doc(hidden)]
#[derive(Clone, Copy, PartialEq, Eq, crate::RuntimeDebugNoBound)]
pub struct Instance12;

/// `Instance13` to be used for instantiable pallets defined with the `#[pallet]` macro.
#[doc(hidden)]
#[derive(Clone, Copy, PartialEq, Eq, crate::RuntimeDebugNoBound)]
pub struct Instance13;

/// `Instance14` to be used for instantiable pallets defined with the `#[pallet]` macro.
#[doc(hidden)]
#[derive(Clone, Copy, PartialEq, Eq, crate::RuntimeDebugNoBound)]
pub struct Instance14;

/// `Instance15` to be used for instantiable pallets defined with the `#[pallet]` macro.
#[doc(hidden)]
#[derive(Clone, Copy, PartialEq, Eq, crate::RuntimeDebugNoBound)]
pub struct Instance15;

/// `Instance16` to be used for instantiable pallets defined with the `#[pallet]` macro.
#[doc(hidden)]
#[derive(Clone, Copy, PartialEq, Eq, crate::RuntimeDebugNoBound)]
pub struct Instance16;