+++ /dev/null
-#pragma once
-/******************************************************************************
-*
-* Copyright (c) 2019 AT&T Intellectual Property.
-* Copyright (c) 2018-2019 Nokia.
-*
-* 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.
-*
-******************************************************************************/
-
-// Standard Includes: ANSI C/C++, MSA, and Third-Party Libraries
-
-// Local Includes: Application specific classes, functions, and libraries
-#include "asn/per/common.hpp"
-#include "asn/per/visitor.hpp"
-
-namespace asn {
-namespace per {
-
-/********************************************************************************
-Choice
-*********************************************************************************/
-
-/**************************************************/
-//22.6-7 Default
-template <class IE, class Enabler = void>
-struct ChoiceNoExt
-{
- static void inline run(IE const& ie, EncoderCtx& ctx)
- {
- ConstrainedWholeNumber<typename IE::constraint_t, typename IE::index_type>::run(ctx, IE::normalize(ie.get_index()));
- VisitorEncoder ve{ ctx };
- ie.encode(ve);
- }
- static void inline run(IE& ie, DecoderCtx& ctx)
- {
- typename IE::index_type idx = ConstrainedWholeNumber<typename IE::constraint_t, typename IE::index_type>::run(ctx);
- VisitorDecoder ve{ ctx };
- ie.decode(IE::denormalize(idx), ve);
- }
-};
-
-//22.4 One alternative
-template <class IE>
-struct ChoiceNoExt<IE, std::enable_if_t<(IE::constraint_t::upper_bound == 0)> >
-{
- static void inline run(IE const& ie, EncoderCtx& ctx)
- {
- VisitorEncoder ve{ ctx };
- ie.encode(ve);
- }
- static void inline run(IE& ie, DecoderCtx& ctx)
- {
- VisitorDecoder ve{ ctx };
- ie.decode(IE::denormalize(0), ve);
- }
-};
-
-/**************************************************/
-
-template <class IE, class Enable = void>
-struct Choice;
-
-//22.5 Extension present
-template <class IE>
-struct Choice<IE, std::enable_if_t<(IE::constraint_t::extended == true)> >
-{
- static void inline run(IE const& ie, EncoderCtx& ctx)
- {
- auto idx = IE::normalize(ie.get_index());
- if (idx <= IE::constraint_t::upper_bound)
- {
- Tools::bit_accessor::put(0, 1, ctx.refBuffer());
- ChoiceNoExt<IE>::run(ie, ctx);
- }
- else
- {
- Tools::bit_accessor::put(1, 1, ctx.refBuffer());
- NormallySmallNonnegativeBinaryInteger<IE>::run(ie, ctx, idx - IE::constraint_t::upper_bound - 1);
- OpenTypeVisitorEncoder ve{ ctx };
- ie.encode(ve);
- }
- }
- static void inline run(IE& ie, DecoderCtx& ctx)
- {
- u8 ext = Tools::bit_accessor::get(1, ctx.refBuffer());
- if (ext)
- {
- typename IE::index_type idx = IE::constraint_t::upper_bound + 1 + NormallySmallNonnegativeBinaryInteger<IE, typename IE::index_type>::run(ctx);
- if (idx >= IE::constraint_t::total_num_entries)
- {
- ie.set_unknown();
- size_t size = LengthDeterminantDefault::run(ctx);
- DecoderCtx::buf_type& buffer = ctx.refBuffer();
- if (buffer.getBytesLeft() < size)
- ctx.refErrorCtx().lengthErrorBytes(buffer.getBytesLeft(), size);
- else
- buffer.advance(size);
- }
- else
- {
- OpenTypeVisitorDecoder ve{ ctx };
- ie.decode(IE::denormalize(idx), ve);
- }
- }
- else
- ChoiceNoExt<IE>::run(ie, ctx);
- }
-};
-
-//22.6 No extension
-template <class IE>
-struct Choice<IE, std::enable_if_t<(IE::constraint_t::extended == false)> >
-{
- static void inline run(IE const& ie, EncoderCtx& ctx)
- {
- ChoiceNoExt<IE>::run(ie, ctx);
- }
- static void inline run(IE& ie, DecoderCtx& ctx)
- {
- ChoiceNoExt<IE>::run(ie, ctx);
- }
-};
-
-} //namespace per
-} //namespace asn