+++ /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"
-
-namespace asn {
-namespace per {
-
-//15.11 Default
-template <class IE, class Enabler = void>
-struct BitstringNoExt
-{
- static void inline run(IE const& ie, EncoderCtx& ctx)
- {
- LengthDeterminant<typename IE::constraint_t>::run(ctx, ie.get_bitqty());
- Tools::bit_accessor::padByte(ctx.refBuffer());
-
- const u8 tail = ie.get_bitqty() % 8;
- if (tail)
- {
- ctx.refBuffer().putBytes(ie.get_buffer().data(), ie.get_buffer().size() - 1);
- u8 last_byte = *(ie.get_buffer().data() + ie.get_buffer().size() - 1);
-
- last_byte <<= 8 - tail;
- ctx.refBuffer().putBytes(&last_byte, 1);
- ctx.refBuffer().set_begin(ctx.refBuffer().begin() - 1, tail);
- }
- else
- {
- ctx.refBuffer().putBytes(ie.get_buffer().data(), ie.get_buffer().size());
- }
- }
- static void inline run(IE& ie, DecoderCtx& ctx)
- {
- size_t len = LengthDeterminant<typename IE::constraint_t>::run(ctx, false);
- size_t len_bytes = (len + 7) >> 3;
- Tools::bit_accessor::padByte(ctx.refBuffer());
- u8 const* data_in = ctx.refBuffer().getBytes(len_bytes);
- if (data_in)
- {
- u8* data_out = ctx.refAllocator().alloc_bytes(len_bytes);
- if (data_out)
- {
- memcpy(data_out, data_in, len_bytes);
- const u8 shift = len % 8;
- if (shift)
- {
- ctx.refBuffer().set_begin(ctx.refBuffer().begin() - 1, shift);
- data_out[len_bytes - 1] >>= 8 - shift;
- }
- ie.set_buffer(len, data_out);
- }
- else
- ctx.refErrorCtx().allocatorNoMem(0, len_bytes);
- }
- }
-};
-
-//15.8 Zero length
-template <class IE>
-struct BitstringNoExt<IE, std::enable_if_t< (IE::constraint_t::upper_bound == 0)> >
-{
- static void inline run(IE const& ie, EncoderCtx& ctx) {/* do nothing */ }
- static void inline run(IE& ie, DecoderCtx& ctx) { ie.setpresent(true); }
-};
-
-//15.9 Up to 6 bits, fixed length
-template <class IE>
-struct BitstringNoExt<IE, std::enable_if_t<
- ((IE::constraint_t::upper_bound == IE::constraint_t::lower_bound) && (IE::constraint_t::upper_bound <= 8) && (IE::constraint_t::upper_bound > 0))
->>
-{
- static void inline run(IE const& ie, EncoderCtx& ctx)
- {
- Tools::bit_accessor::put((static_cast<u8>(ie.get_buffer().data()[0])) & (0xFF >> (8 - IE::constraint_t::upper_bound)),
- IE::constraint_t::upper_bound, ctx.refBuffer());
- }
- static void inline run(IE& ie, DecoderCtx& ctx)
- {
- u8 * data = ctx.refAllocator().alloc_bytes(1);
- if (data)
- {
- data[0] = Tools::bit_accessor::get(IE::constraint_t::upper_bound, ctx.refBuffer());
- ie.set_buffer(IE::constraint_t::upper_bound, data);
- }
- else
- ctx.refErrorCtx().allocatorNoMem(0, 1);
- }
-};
-template <class IE>
-struct BitstringNoExt<IE, std::enable_if_t<
- ((IE::constraint_t::upper_bound == IE::constraint_t::lower_bound) && (IE::constraint_t::upper_bound <= 16) && (IE::constraint_t::upper_bound > 8))
->>
-{
- static void inline run(IE const& ie, EncoderCtx& ctx)
- {
- Tools::bit_accessor::put(ie.get_buffer().data()[0], 8, ctx.refBuffer());
- Tools::bit_accessor::put((static_cast<u8>(ie.get_buffer().data()[1])) & (0xFF >> (16 - IE::constraint_t::upper_bound)),
- IE::constraint_t::upper_bound - 8, ctx.refBuffer());
- }
- static void inline run(IE& ie, DecoderCtx& ctx)
- {
- u8 * data = ctx.refAllocator().alloc_bytes(2);
- if (data)
- {
- data[0] = Tools::bit_accessor::get(8, ctx.refBuffer());
- data[1] = Tools::bit_accessor::get(IE::constraint_t::upper_bound - 8, ctx.refBuffer());
- ie.set_buffer(IE::constraint_t::upper_bound, data);
- }
- else
- ctx.refErrorCtx().allocatorNoMem(0, 2);
- }
-};
-
-//15.10 More than 6 bits, up to 64K bits, fixed length
-template <class IE>
-struct BitstringNoExt<IE, std::enable_if_t<
- ((IE::constraint_t::upper_bound == IE::constraint_t::lower_bound) && (IE::constraint_t::upper_bound < 65536) && (IE::constraint_t::upper_bound > 16))
->>
-{
- constexpr static size_t len_bytes = (IE::constraint_t::upper_bound + 7) >> 3;
-
- static void inline run(IE const& ie, EncoderCtx& ctx)
- {
- Tools::bit_accessor::padByte(ctx.refBuffer());
- if (ie.get_buffer().size() != len_bytes)
- {
- ctx.refErrorCtx().sizeRangeError(ie.get_buffer().size(), len_bytes, len_bytes);
- }
- else
- {
- const u8 tail = ie.get_bitqty() % 8;
- if (tail)
- {
- ctx.refBuffer().putBytes(ie.get_buffer().data(), ie.get_buffer().size() - 1);
- u8 last_byte = *(ie.get_buffer().data() + ie.get_buffer().size() - 1);
- last_byte <<= 8 - tail;
- ctx.refBuffer().putBytes(&last_byte, 1);
- ctx.refBuffer().set_begin(ctx.refBuffer().begin() - 1, tail);
- }
- else
- {
- ctx.refBuffer().putBytes(ie.get_buffer().data(), ie.get_buffer().size());
- }
- }
- }
- static void inline run(IE& ie, DecoderCtx& ctx)
- {
- Tools::bit_accessor::padByte(ctx.refBuffer());
- u8 const* data_in = ctx.refBuffer().getBytes(len_bytes);
- if (data_in)
- {
- u8* data_out = ctx.refAllocator().alloc_bytes(len_bytes);
- if (data_out)
- {
- memcpy(data_out, data_in, len_bytes);
- const u8 shift = IE::constraint_t::upper_bound % 8;
- if (shift)
- {
- ctx.refBuffer().set_begin(ctx.refBuffer().begin() - 1, shift);
- data_out[len_bytes - 1] >>= 8 - shift;
- }
- ie.set_buffer(IE::constraint_t::upper_bound, data_out);
- }
- else
- ctx.refErrorCtx().allocatorNoMem(0, len_bytes);
- }
- }
-};
-
-/**************************************************/
-
-template <class IE, class Enabler = void>
-struct Bitstring;
-
-//15.6 : Extension present
-template <class IE>
-struct Bitstring<IE, std::enable_if_t< (IE::constraint_t::extended == true)> >
-{
- static void inline run(IE const& ie, EncoderCtx& ctx)
- {
-
- if (ie.get_bitqty() <= IE::constraint_t::upper_bound && ie.get_bitqty() >= IE::constraint_t::lower_bound)
- {
- Tools::bit_accessor::put(0, 1, ctx.refBuffer());
- BitstringNoExt<IE>::run(ie, ctx);
- }
- else
- {
- Tools::bit_accessor::put(1, 1, ctx.refBuffer());
- Tools::bit_accessor::padByte(ctx.refBuffer());
- LengthDeterminant<typename IE::constraint_t>::run(ctx, ie.get_bitqty());
- Tools::bit_accessor::padByte(ctx.refBuffer());
- const u8 tail = ie.get_bitqty() % 8;
- if (tail)
- {
- ctx.refBuffer().putBytes(ie.get_buffer().data(), ie.get_buffer().size() - 1);
- u8 last_byte = *(ie.get_buffer().data() + ie.get_buffer().size() - 1);
-
- last_byte <<= 8 - tail;
-
- ctx.refBuffer().putBytes(&last_byte, 1);
- ctx.refBuffer().set_begin(ctx.refBuffer().begin() - 1, tail);
- }
- else
- {
- ctx.refBuffer().putBytes(ie.get_buffer().data(), ie.get_buffer().size());
- }
- }
- }
- static void inline run(IE& ie, DecoderCtx& ctx)
- {
- u8 ext = Tools::bit_accessor::get(1, ctx.refBuffer());
- if (ext)
- {
- Tools::bit_accessor::padByte(ctx.refBuffer());
- const size_t len = LengthDeterminant<typename IE::constraint_t>::run(ctx, true);
- const size_t len_bytes = (len + 7) >> 3;
- Tools::bit_accessor::padByte(ctx.refBuffer());
- u8 const* data_in = ctx.refBuffer().getBytes(len_bytes);
- if (data_in)
- {
- u8* data_out = ctx.refAllocator().alloc_bytes(len_bytes);
- if (data_out)
- {
- memcpy(data_out, data_in, len_bytes);
- const u8 shift = len % 8;
- if (shift)
- {
- ctx.refBuffer().set_begin(ctx.refBuffer().begin() - 1, shift);
- data_out[len_bytes - 1] >>= 8 - shift;
- }
- ie.set_buffer(len, data_out);
- }
- else
- ctx.refErrorCtx().allocatorNoMem(0, len_bytes);
- }
- }
- else
- BitstringNoExt<IE>::run(ie, ctx);
- }
-};
-
-//15.7 : No extension
-template <class IE>
-struct Bitstring<IE, std::enable_if_t< (IE::constraint_t::extended == false)> >
-{
- static void inline run(IE const& ie, EncoderCtx& ctx)
- {
- BitstringNoExt<IE>::run(ie, ctx);
- }
- static void inline run(IE& ie, DecoderCtx& ctx)
- {
- BitstringNoExt<IE>::run(ie, ctx);
- }
-};
-
-} //namespace per
-} //namespace asn
Code Review / sim / e2-interface.git / blobdiff