-#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"
-
-namespace asn {
-namespace per {
-
-/********************************************************************************
-VisitorEncoder
-*********************************************************************************/
-struct VisitorEncoder
-{
- explicit VisitorEncoder(EncoderCtx& ctx) : m_ctx(ctx) {}
-
- template <typename IE>
- bool operator() (IE const& ie) const
- {
- Element<IE, IE::ie_type>::run(ie, m_ctx);
- return static_cast<bool>(m_ctx);
- }
- EncoderCtx& m_ctx;
-};
-
-/********************************************************************************
-VisitorDecoder
-*********************************************************************************/
-struct VisitorDecoder
-{
- VisitorDecoder(DecoderCtx& ctx) : m_ctx(ctx) {}
-
- template <typename IE>
- bool operator() (IE& ie) const
- {
- Element<IE, IE::ie_type>::run(ie, m_ctx);
- return static_cast<bool>(m_ctx);
- }
- DecoderCtx& m_ctx;
-};
-
-/***************************************************************************************
-* Open Type Visitor // Encode Open Type (10.2)
-***************************************************************************************/
-struct OpenTypeVisitorEncoder
-{
- explicit OpenTypeVisitorEncoder(EncoderCtx& ctx) : m_ctx(ctx) {}
-
- template <typename IE>
- bool operator() (IE const& ie) const
- {
- size_t reserved_size = 1; //1 byte length is most likely
- Tools::bit_accessor::padByte(m_ctx.refBuffer());
-
- if (m_ctx.refBuffer().getBytesLeft())
- {
- EncoderCtx::buf_type::pointer p = m_ctx.refBuffer().advance(reserved_size);
- EncoderCtx::buf_type::pointer start = p + reserved_size;
-
- Element<IE, IE::ie_type>::run(ie, m_ctx);
-
- if (m_ctx)
- {
- Tools::bit_accessor::padByte(m_ctx.refBuffer());
- EncoderCtx::buf_type::pointer p_new = m_ctx.refBuffer().begin();
- size_t size = p_new - start;
- size_t needed = LengthDeterminantDefault::bytes_needed(size) - reserved_size;
- if (needed) //1 byte is not enough for the length determinant. it is hardly possible
- {
- if (m_ctx.refBuffer().getBytesLeft() < needed) {
- m_ctx.refErrorCtx().lengthErrorBytes(m_ctx.refBuffer().getBytesLeft(), needed);
- return false;
- }
- memmove(start + needed, start, size);
- p_new += needed;
- }
- m_ctx.refBuffer().set_begin(p, 0);
- LengthDeterminantDefault::run(m_ctx, size);
- if (m_ctx) {
- m_ctx.refBuffer().set_begin(p_new, 0);
- Tools::bit_accessor::padByte(m_ctx.refBuffer());
- }
- }
- }
- else
- {
- m_ctx.refErrorCtx().lengthErrorBytes(m_ctx.refBuffer().getBytesLeft(), reserved_size);
- }
- return static_cast<bool>(m_ctx);
- }
- EncoderCtx& m_ctx;
-};
-
-/***************************************************************************************
-* Open Type Visitor // Decode Open Type (10.2)
-***************************************************************************************/
-struct OpenTypeVisitorDecoder
-{
- explicit OpenTypeVisitorDecoder(DecoderCtx& ctx) : m_ctx(ctx) {}
-
- template <typename IE>
- bool operator() (IE& ie) const
- {
- size_t size = LengthDeterminantDefault::run(m_ctx);
- DecoderCtx::buf_type& buffer = m_ctx.refBuffer();
- if (buffer.getBytesLeft() < size)
- {
- m_ctx.refErrorCtx().lengthErrorBytes(buffer.getBytesLeft(), size);
- return false;
- }
- DecoderCtx::buf_type::pointer end = buffer.end();
- buffer.set_end(buffer.begin() + size);
- Element<IE, IE::ie_type>::run(ie, m_ctx);
- buffer.set_end(end);
-
- return static_cast<bool>(m_ctx);
- }
- DecoderCtx& m_ctx;
-};
-
-} //namespace per
-} //namespace asn