COMMS
Template library intended to help with implementation of communication protocols.
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include
comms
details
protocol_layers_access.h
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//
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// Copyright 2017 - 2026 (C). Alex Robenko. All rights reserved.
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//
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// SPDX-License-Identifier: MPL-2.0
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//
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// This Source Code Form is subject to the terms of the Mozilla Public
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// License, v. 2.0. If a copy of the MPL was not distributed with this
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// file, You can obtain one at http://mozilla.org/MPL/2.0/.
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#pragma once
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#include "comms/details/macro_common.h"
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#include "comms/details/reverse_macro_args.h"
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#define COMMS_LAYER_TYPE_1 COMMS_EXPAND(::ThisLayer)
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#define COMMS_LAYER_TYPE_2 COMMS_EXPAND(::NextLayer) COMMS_LAYER_TYPE_1
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#define COMMS_LAYER_TYPE_3 COMMS_EXPAND(::NextLayer) COMMS_LAYER_TYPE_2
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#define COMMS_LAYER_TYPE_4 COMMS_EXPAND(::NextLayer) COMMS_LAYER_TYPE_3
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#define COMMS_LAYER_TYPE_5 COMMS_EXPAND(::NextLayer) COMMS_LAYER_TYPE_4
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#define COMMS_LAYER_TYPE_6 COMMS_EXPAND(::NextLayer) COMMS_LAYER_TYPE_5
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#define COMMS_LAYER_TYPE_7 COMMS_EXPAND(::NextLayer) COMMS_LAYER_TYPE_6
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#define COMMS_LAYER_TYPE_8 COMMS_EXPAND(::NextLayer) COMMS_LAYER_TYPE_7
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#define COMMS_LAYER_TYPE_9 COMMS_EXPAND(::NextLayer) COMMS_LAYER_TYPE_8
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#define COMMS_LAYER_TYPE_10 COMMS_EXPAND(::NextLayer) COMMS_LAYER_TYPE_9
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#define COMMS_LAYER_TYPE_11 COMMS_EXPAND(::NextLayer) COMMS_LAYER_TYPE_10
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#define COMMS_LAYER_TYPE_12 COMMS_EXPAND(::NextLayer) COMMS_LAYER_TYPE_11
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#define COMMS_LAYER_TYPE_13 COMMS_EXPAND(::NextLayer) COMMS_LAYER_TYPE_12
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#define COMMS_LAYER_TYPE_14 COMMS_EXPAND(::NextLayer) COMMS_LAYER_TYPE_13
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#define COMMS_LAYER_TYPE_15 COMMS_EXPAND(::NextLayer) COMMS_LAYER_TYPE_14
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#define COMMS_LAYER_TYPE_16 COMMS_EXPAND(::NextLayer) COMMS_LAYER_TYPE_15
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#define COMMS_DO_LAYER_TYPE_INTERNAL_(N, B_) typename B_ COMMS_EXPAND(COMMS_LAYER_TYPE_ ## N)
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#define COMMS_DO_LAYER_TYPE_INTERNAL(N, B_) COMMS_EXPAND(COMMS_DO_LAYER_TYPE_INTERNAL_(N, B_))
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#define COMMS_DO_LAYER_TYPE(B_, ...) \
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COMMS_EXPAND(COMMS_DO_LAYER_TYPE_INTERNAL(COMMS_NUM_ARGS(__VA_ARGS__), B_))
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#define COMMS_LAYER_TYPE_ALIAS(c_, B_, n_) \
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using COMMS_CONCATENATE(Layer_, n_) = COMMS_DO_LAYER_TYPE_INTERNAL(c_, B_);
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#define COMMS_LAYER_TYPE_ALIAS_1(B_, n_) COMMS_LAYER_TYPE_ALIAS(1, B_, n_)
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#define COMMS_LAYER_TYPE_ALIAS_2(B_, n_, ...) \
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COMMS_LAYER_TYPE_ALIAS(2, B_, n_) \
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COMMS_EXPAND(COMMS_LAYER_TYPE_ALIAS_1(B_, __VA_ARGS__))
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#define COMMS_LAYER_TYPE_ALIAS_3(B_, n_, ...) \
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COMMS_LAYER_TYPE_ALIAS(3, B_, n_) \
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COMMS_EXPAND(COMMS_LAYER_TYPE_ALIAS_2(B_, __VA_ARGS__))
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#define COMMS_LAYER_TYPE_ALIAS_4(B_, n_, ...) \
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COMMS_LAYER_TYPE_ALIAS(4, B_, n_) \
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COMMS_EXPAND(COMMS_LAYER_TYPE_ALIAS_3(B_, __VA_ARGS__))
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#define COMMS_LAYER_TYPE_ALIAS_5(B_, n_, ...) \
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COMMS_LAYER_TYPE_ALIAS(5, B_, n_) \
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COMMS_EXPAND(COMMS_LAYER_TYPE_ALIAS_4(B_, __VA_ARGS__))
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#define COMMS_LAYER_TYPE_ALIAS_6(B_, n_, ...) \
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COMMS_LAYER_TYPE_ALIAS(6, B_, n_) \
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COMMS_EXPAND(COMMS_LAYER_TYPE_ALIAS_5(B_, __VA_ARGS__))
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#define COMMS_LAYER_TYPE_ALIAS_7(B_, n_, ...) \
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COMMS_LAYER_TYPE_ALIAS(7, B_, n_) \
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COMMS_EXPAND(COMMS_LAYER_TYPE_ALIAS_6(B_, __VA_ARGS__))
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#define COMMS_LAYER_TYPE_ALIAS_8(B_, n_, ...) \
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COMMS_LAYER_TYPE_ALIAS(8, B_, n_) \
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COMMS_EXPAND(COMMS_LAYER_TYPE_ALIAS_7(B_, __VA_ARGS__))
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#define COMMS_LAYER_TYPE_ALIAS_9(B_, n_, ...) \
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COMMS_LAYER_TYPE_ALIAS(9, B_, n_) \
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COMMS_EXPAND(COMMS_LAYER_TYPE_ALIAS_8(B_, __VA_ARGS__))
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#define COMMS_LAYER_TYPE_ALIAS_10(B_, n_, ...) \
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COMMS_LAYER_TYPE_ALIAS(10, B_, n_) \
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COMMS_EXPAND(COMMS_LAYER_TYPE_ALIAS_9(B_, __VA_ARGS__))
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#define COMMS_LAYER_TYPE_ALIAS_11(B_, n_, ...) \
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COMMS_LAYER_TYPE_ALIAS(11, B_, n_) \
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COMMS_EXPAND(COMMS_LAYER_TYPE_ALIAS_10(B_, __VA_ARGS__))
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#define COMMS_LAYER_TYPE_ALIAS_12(B_, n_, ...) \
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COMMS_LAYER_TYPE_ALIAS(12, B_, n_) \
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COMMS_EXPAND(COMMS_LAYER_TYPE_ALIAS_11(B_, __VA_ARGS__))
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#define COMMS_LAYER_TYPE_ALIAS_13(B_, n_, ...) \
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COMMS_LAYER_TYPE_ALIAS(13, B_, n_) \
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COMMS_EXPAND(COMMS_LAYER_TYPE_ALIAS_12(B_, __VA_ARGS__))
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#define COMMS_LAYER_TYPE_ALIAS_14(B_, n_, ...) \
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COMMS_LAYER_TYPE_ALIAS(14, B_, n_) \
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COMMS_EXPAND(COMMS_LAYER_TYPE_ALIAS_13(B_, __VA_ARGS__))
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#define COMMS_LAYER_TYPE_ALIAS_15(B_, n_, ...) \
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COMMS_LAYER_TYPE_ALIAS(15, B_, n_) \
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COMMS_EXPAND(COMMS_LAYER_TYPE_ALIAS_14(B_, __VA_ARGS__))
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#define COMMS_LAYER_TYPE_ALIAS_16(B_, n_, ...) \
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COMMS_LAYER_TYPE_ALIAS(16, B_, n_) \
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COMMS_EXPAND(COMMS_LAYER_TYPE_ALIAS_15(B_, __VA_ARGS__))
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#define COMMS_DO_LAYER_TYPE_ALIAS_INTERNAL_(N, B_, ...) COMMS_EXPAND(COMMS_LAYER_TYPE_ALIAS_ ## N(B_, __VA_ARGS__))
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#define COMMS_DO_LAYER_TYPE_ALIAS_INTERNAL(N, B_, ...) COMMS_EXPAND(COMMS_DO_LAYER_TYPE_ALIAS_INTERNAL_(N, B_, __VA_ARGS__))
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#define COMMS_DO_LAYER_TYPE_ALIAS(B_, ...) \
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COMMS_EXPAND(COMMS_DO_LAYER_TYPE_ALIAS_INTERNAL(COMMS_NUM_ARGS(__VA_ARGS__), B_, __VA_ARGS__))
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#define COMMS_LAYER_CALL_1 COMMS_EXPAND(.thisLayer())
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#define COMMS_LAYER_CALL_2 COMMS_EXPAND(.nextLayer())
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#define COMMS_LAYER_CALL_3 COMMS_EXPAND(.nextLayer()) COMMS_LAYER_CALL_2
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#define COMMS_LAYER_CALL_4 COMMS_EXPAND(.nextLayer()) COMMS_LAYER_CALL_3
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#define COMMS_LAYER_CALL_5 COMMS_EXPAND(.nextLayer()) COMMS_LAYER_CALL_4
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#define COMMS_LAYER_CALL_6 COMMS_EXPAND(.nextLayer()) COMMS_LAYER_CALL_5
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#define COMMS_LAYER_CALL_7 COMMS_EXPAND(.nextLayer()) COMMS_LAYER_CALL_6
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#define COMMS_LAYER_CALL_8 COMMS_EXPAND(.nextLayer()) COMMS_LAYER_CALL_7
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#define COMMS_LAYER_CALL_9 COMMS_EXPAND(.nextLayer()) COMMS_LAYER_CALL_8
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#define COMMS_LAYER_CALL_10 COMMS_EXPAND(.nextLayer()) COMMS_LAYER_CALL_9
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#define COMMS_LAYER_CALL_11 COMMS_EXPAND(.nextLayer()) COMMS_LAYER_CALL_10
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#define COMMS_LAYER_CALL_12 COMMS_EXPAND(.nextLayer()) COMMS_LAYER_CALL_11
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#define COMMS_LAYER_CALL_13 COMMS_EXPAND(.nextLayer()) COMMS_LAYER_CALL_12
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#define COMMS_LAYER_CALL_14 COMMS_EXPAND(.nextLayer()) COMMS_LAYER_CALL_13
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#define COMMS_LAYER_CALL_15 COMMS_EXPAND(.nextLayer()) COMMS_LAYER_CALL_14
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#define COMMS_LAYER_CALL_16 COMMS_EXPAND(.nextLayer()) COMMS_LAYER_CALL_15
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#define COMMS_DO_LAYER_CALL_INTERNAL_(N, B_) COMMS_EXPAND(B_) COMMS_EXPAND(COMMS_LAYER_CALL_ ## N)
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#define COMMS_DO_LAYER_CALL_INTERNAL(N, B_) COMMS_EXPAND(COMMS_DO_LAYER_CALL_INTERNAL_(N, B_))
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#define COMMS_DO_LAYER_CALL(B_, ...) \
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COMMS_EXPAND(COMMS_DO_LAYER_CALL_INTERNAL(COMMS_NUM_ARGS(__VA_ARGS__), B_))
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#ifdef COMMS_MUST_DEFINE_BASE
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#define COMMS_ACCESS_LAYER_FUNC(c_, n_) \
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COMMS_DO_LAYER_TYPE_INTERNAL(c_, Base)& COMMS_CONCATENATE(layer_, n_)()
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#define COMMS_ACCESS_LAYER_CONST_FUNC(c_, n_) \
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const COMMS_DO_LAYER_TYPE_INTERNAL(c_, Base)& COMMS_CONCATENATE(layer_, n_)() const
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#else
// #ifdef COMMS_MUST_DEFINE_BASE
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#define COMMS_ACCESS_LAYER_FUNC(c_, n_) FUNC_AUTO_REF_RETURN(COMMS_CONCATENATE(layer_, n_), decltype(COMMS_DO_LAYER_CALL_INTERNAL(c_, COMMS_EXPAND(comms::frame::toFrameLayerBase(*this)))))
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#define COMMS_ACCESS_LAYER_CONST_FUNC(c_, n_) FUNC_AUTO_REF_RETURN_CONST(COMMS_CONCATENATE(layer_, n_), decltype(COMMS_DO_LAYER_CALL_INTERNAL(c_, COMMS_EXPAND(comms::frame::toFrameLayerBase(*this)))))
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#endif
// #ifdef COMMS_MUST_DEFINE_BASE
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#define COMMS_ACCESS_LAYER_ACC_FUNC(c_, n_) \
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COMMS_ACCESS_LAYER_FUNC(c_, n_) {\
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return COMMS_DO_LAYER_CALL_INTERNAL(c_, comms::frame::toFrameLayerBase(*this)); \
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} \
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COMMS_ACCESS_LAYER_CONST_FUNC(c_, n_) {\
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return COMMS_DO_LAYER_CALL_INTERNAL(c_, comms::frame::toFrameLayerBase(*this)); \
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}
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#define COMMS_ACCESS_LAYER_ACC_FUNC_1(n_) COMMS_ACCESS_LAYER_ACC_FUNC(1, n_)
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#define COMMS_ACCESS_LAYER_ACC_FUNC_2(n_, ...) \
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COMMS_ACCESS_LAYER_ACC_FUNC(2, n_) \
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COMMS_EXPAND(COMMS_ACCESS_LAYER_ACC_FUNC_1(__VA_ARGS__))
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#define COMMS_ACCESS_LAYER_ACC_FUNC_3(n_, ...) \
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COMMS_ACCESS_LAYER_ACC_FUNC(3, n_) \
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COMMS_EXPAND(COMMS_ACCESS_LAYER_ACC_FUNC_2(__VA_ARGS__))
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#define COMMS_ACCESS_LAYER_ACC_FUNC_4(n_, ...) \
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COMMS_ACCESS_LAYER_ACC_FUNC(4, n_) \
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COMMS_EXPAND(COMMS_ACCESS_LAYER_ACC_FUNC_3(__VA_ARGS__))
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#define COMMS_ACCESS_LAYER_ACC_FUNC_5(n_, ...) \
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COMMS_ACCESS_LAYER_ACC_FUNC(5, n_) \
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COMMS_EXPAND(COMMS_ACCESS_LAYER_ACC_FUNC_4(__VA_ARGS__))
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#define COMMS_ACCESS_LAYER_ACC_FUNC_6(n_, ...) \
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COMMS_ACCESS_LAYER_ACC_FUNC(6, n_) \
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COMMS_EXPAND(COMMS_ACCESS_LAYER_ACC_FUNC_5(__VA_ARGS__))
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#define COMMS_ACCESS_LAYER_ACC_FUNC_7(n_, ...) \
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COMMS_ACCESS_LAYER_ACC_FUNC(7, n_) \
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COMMS_EXPAND(COMMS_ACCESS_LAYER_ACC_FUNC_6(__VA_ARGS__))
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#define COMMS_ACCESS_LAYER_ACC_FUNC_8(n_, ...) \
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COMMS_ACCESS_LAYER_ACC_FUNC(8, n_) \
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COMMS_EXPAND(COMMS_ACCESS_LAYER_ACC_FUNC_7(__VA_ARGS__))
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#define COMMS_ACCESS_LAYER_ACC_FUNC_9(n_, ...) \
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COMMS_ACCESS_LAYER_ACC_FUNC(9, n_) \
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COMMS_EXPAND(COMMS_ACCESS_LAYER_ACC_FUNC_8(__VA_ARGS__))
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#define COMMS_ACCESS_LAYER_ACC_FUNC_10(n_, ...) \
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COMMS_ACCESS_LAYER_ACC_FUNC(10, n_) \
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COMMS_EXPAND(COMMS_ACCESS_LAYER_ACC_FUNC_9(__VA_ARGS__))
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#define COMMS_ACCESS_LAYER_ACC_FUNC_11(n_, ...) \
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COMMS_ACCESS_LAYER_ACC_FUNC(11, n_) \
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COMMS_EXPAND(COMMS_ACCESS_LAYER_ACC_FUNC_10(__VA_ARGS__))
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#define COMMS_ACCESS_LAYER_ACC_FUNC_12(n_, ...) \
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COMMS_ACCESS_LAYER_ACC_FUNC(12, n_) \
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COMMS_EXPAND(COMMS_ACCESS_LAYER_ACC_FUNC_11(__VA_ARGS__))
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#define COMMS_ACCESS_LAYER_ACC_FUNC_13(n_, ...) \
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COMMS_ACCESS_LAYER_ACC_FUNC(13, n_) \
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COMMS_EXPAND(COMMS_ACCESS_LAYER_ACC_FUNC_12(__VA_ARGS__))
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#define COMMS_ACCESS_LAYER_ACC_FUNC_14(n_, ...) \
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COMMS_ACCESS_LAYER_ACC_FUNC(14, n_) \
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COMMS_EXPAND(COMMS_ACCESS_LAYER_ACC_FUNC_13(__VA_ARGS__))
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#define COMMS_ACCESS_LAYER_ACC_FUNC_15(n_, ...) \
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COMMS_ACCESS_LAYER_ACC_FUNC(15, n_) \
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COMMS_EXPAND(COMMS_ACCESS_LAYER_ACC_FUNC_14(__VA_ARGS__))
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#define COMMS_ACCESS_LAYER_ACC_FUNC_16(n_, ...) \
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COMMS_ACCESS_LAYER_ACC_FUNC(16, n_) \
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COMMS_EXPAND(COMMS_ACCESS_LAYER_ACC_FUNC_15(c_, __VA_ARGS__))
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#define COMMS_CHOOSE_ACCESS_LAYER_ACC_FUNC_(N, ...) COMMS_EXPAND(COMMS_ACCESS_LAYER_ACC_FUNC_ ## N(__VA_ARGS__))
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#define COMMS_CHOOSE_ACCESS_LAYER_ACC_FUNC(N, ...) COMMS_EXPAND(COMMS_CHOOSE_ACCESS_LAYER_ACC_FUNC_(N, __VA_ARGS__))
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#define COMMS_DO_ACCESS_LAYER_ACC_FUNC(...) \
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COMMS_EXPAND(COMMS_CHOOSE_ACCESS_LAYER_ACC_FUNC(COMMS_NUM_ARGS(__VA_ARGS__), __VA_ARGS__))
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