+++ /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/length.hpp"
-
-namespace asn {
-namespace per {
-
-template <class Range, class Enable = void>
-struct BinaryIntegerLength;
-
-/***************************************************************************************
-* Encoding of a non-negative-binary-integer (X.691 10.3)
-***************************************************************************************/
-template <class Range>
-struct NonnegativeBinaryInteger
-{
- static void inline run(u64 val, EncoderCtx& ctx)
- {
- if(val)
- {
- size_t const len = sizeof(val) - (__builtin_clzll(val) >> 3);
-
- BinaryIntegerLength< Range >::run(ctx, len);
- Tools::bit_accessor::padByte(ctx.refBuffer());
-
- u8 buff[len];
- size_t shift = (len - 1) << 3;
- for(size_t i = 0; i < len; ++i)
- {
- buff[i] = static_cast<uint8_t>(val >> shift);
- shift -= 8;
- }
-
- ctx.refBuffer().putBytes(buff, len);
- }
- else
- {
- BinaryIntegerLength< Range >::run(ctx, 1);
- Tools::bit_accessor::padByte(ctx.refBuffer());
- ctx.refBuffer().putByte(0);
- }
- }
- template<typename T>
- static void inline run(T& retval, DecoderCtx& ctx, bool extended_val)
- {
- retval = 0;
- size_t len = (size_t)BinaryIntegerLength< Range >::run(ctx, extended_val);
- Tools::bit_accessor::padByte(ctx.refBuffer());
- u8 const* data = ctx.refBuffer().getBytes(len);
-
- if (data)
- {
- for (size_t i = 0; i < len; ++i)
- {
- retval = retval << 8;
- retval |= data[i];
- }
- }
- }
-};
-
-/***************************************************************************************
-* Encoding of a 2's-complement-binary-integer (X.691 10.4)
-***************************************************************************************/
-
-template <class IE>
-struct TwosComplementBinaryInteger
-{
- static void inline run(IE const& ie, EncoderCtx& ctx)
- {
- Tools::bit_accessor::padByte(ctx.refBuffer());
-
- u64 val = ie.get();
- u64 tval = val;
- u64 mask = static_cast<u64>(-128);
- u8 len = 1;
- u8 i = 7;
-
- u8 buf[8];
-
- while (len < 8)
- {
- buf[i] = static_cast<u8>(tval);
- if (!(val & mask) || (val & mask) == mask)
- break;
- mask = mask << 8;
- tval = tval >> 8;
- len++;
- i--;
- }
-
- ctx.refBuffer().putByte(len) && ctx.refBuffer().putBytes(&buf[i], len);
- }
- static void inline run(IE& ie, DecoderCtx& ctx)
- {
- Tools::bit_accessor::padByte(ctx.refBuffer());
-
- u8 const* data = nullptr;
- typename IE::value_type val = 0;
-
- u8 const* len = ctx.refBuffer().getBytes(1);
-
- if (len && (*len) <= 8 && (data = ctx.refBuffer().getBytes(*len)))
- {
- for (u8 i = 0; i < *len; ++i)
- {
- val = val << 8;
- val |= data[i];
- }
- }
- ie.set(val);
- }
-};
-
-/***************************************************************************************
-* Encoding of a normally small non-negativebinary integer (X.691 10.6)
-***************************************************************************************/
-template <class IE, typename TValue = typename IE::value_type>
-struct NormallySmallNonnegativeBinaryInteger
-{
- static void inline run(IE const& ie, EncoderCtx& ctx, typename IE::constraint_t::boundary_type val)
- {
- if (val <= 63)
- {
- Tools::bit_accessor::put(static_cast<u8>(val), 7, ctx.refBuffer()); //7 bits ('0' indicator + value)
- }
- else
- {
- Tools::bit_accessor::put(1, 1, ctx.refBuffer()); //1 bit ('1' indicator)
- NonnegativeBinaryInteger<typename IE::constraint_t>::run(val, ctx);
- }
- }
- static TValue inline run(DecoderCtx& ctx)
- {
- u8 ext = Tools::bit_accessor::get(1, ctx.refBuffer());
- if (ext) {
- TValue rval = 0;
- NonnegativeBinaryInteger<typename IE::constraint_t>::run(rval, ctx, true);
- return rval;
- }
- return Tools::bit_accessor::get(6, ctx.refBuffer());
- }
-};
-
-} //namespace per
-} //namespace asn
Code Review / sim / e2-interface.git / blobdiff