e2sim/e2apv1sim/src/ASN1/asn/per/sequence_of.hpp

   1 #pragma once
   2 /******************************************************************************
   3 *
   4 *   Copyright (c) 2019 AT&T Intellectual Property.
   5 *   Copyright (c) 2018-2019 Nokia.
   6 *
   7 *   Licensed under the Apache License, Version 2.0 (the "License");
   8 *   you may not use this file except in compliance with the License.
   9 *   You may obtain a copy of the License at
  10 *
  11 *       http://www.apache.org/licenses/LICENSE-2.0
  12 *
  13 *   Unless required by applicable law or agreed to in writing, software
  14 *   distributed under the License is distributed on an "AS IS" BASIS,
  15 *   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  16 *   See the License for the specific language governing permissions and
  17 *   limitations under the License.
  18 *
  19 ******************************************************************************/
  20
  21 // Standard Includes: ANSI C/C++, MSA, and Third-Party Libraries
  22
  23 // Local Includes: Application specific classes, functions, and libraries
  24 #include "asn/per/common.hpp"
  25
  26 namespace asn {
  27 namespace per {
  28
  29 template <class IE, class Enable = void>
  30 struct SequenceOf;
  31
  32 //19.6 Default
  33 template <class IE, class Enabler = void>
  34 struct SequenceOfNoExt
  35 {
  36         static void inline run(IE const& ie, EncoderCtx& ctx)
  37         {
  38                 LengthDeterminant<typename IE::constraint_t>::run(ctx, ie.size());
  39         }
  40         static void inline run(IE& ie, DecoderCtx& ctx)
  41         {
  42                 size_t len = LengthDeterminant<typename IE::constraint_t>::run(ctx, false);
  43                 for (size_t i = 0; i < len; ++i)
  44                 {
  45                         u8* data = ctx.refAllocator().alloc_bytes(sizeof(typename IE::value_type));
  46                         if (data)
  47                         {
  48                                 typename IE::value_type * v = new (data) typename IE::value_type;
  49                                 v->clear();
  50                                 ie.push_back(*v);
  51                         }
  52                         else
  53                         {
  54                                 ctx.refErrorCtx().allocatorNoMem(0, sizeof(typename IE::value_type));
  55                                 break;
  56                         }
  57                 }
  58         }
  59 };
  60
  61 //16.6
  62 template <class IE>
  63 struct SequenceOfNoExt<IE, std::enable_if_t<
  64         ((IE::constraint_t::upper_bound == IE::constraint_t::lower_bound) && (IE::constraint_t::upper_bound < 65536))
  65 >>
  66 {
  67         static void inline run(IE const& ie, EncoderCtx& ctx) {/*do nothing*/ }
  68         static void inline run(IE& ie, DecoderCtx& ctx)
  69         {
  70                 for (size_t i = 0; i < IE::constraint_t::upper_bound; ++i)
  71                 {
  72                         u8* data = ctx.refAllocator().alloc_bytes(sizeof(typename IE::value_type));
  73                         if (data)
  74                         {
  75                                 typename IE::value_type * v = new (data) typename IE::value_type;
  76                                 v->clear();
  77                                 ie.push_back(*v);
  78                         }
  79                         else
  80                         {
  81                                 ctx.refErrorCtx().allocatorNoMem(0, sizeof(typename IE::value_type));
  82                                 break;
  83                         }
  84                 }
  85         }
  86 };
  87
  88 /**************************************************/
  89
  90 //19.4 Extension present
  91 template <class IE>
  92 struct SequenceOf<IE, std::enable_if_t< (IE::constraint_t::extended == true)> >
  93 {
  94         static void inline run(IE const& ie, EncoderCtx& ctx)
  95         {
  96                 if (ie.size() <= IE::constraint_t::upper_bound && ie.size() >= IE::constraint_t::lower_bound)
  97                 {
  98                         Tools::bit_accessor::put(0, 1, ctx.refBuffer());
  99                         SequenceOfNoExt<IE>::run(ie, ctx);
 100                 }
 101                 else
 102                 {
 103                         Tools::bit_accessor::put(1, 1, ctx.refBuffer());
 104                         LengthDeterminant<typename IE::constraint_t>::run(ctx, ie.size());
 105                 }
 106         }
 107         static void inline run(IE& ie, DecoderCtx& ctx)
 108         {
 109                 u8 ext = Tools::bit_accessor::get(1, ctx.refBuffer());
 110                 if (ext)
 111                 {
 112                         size_t len = LengthDeterminant<typename IE::constraint_t>::run(ctx, true);
 113                         for (size_t i = 0; i < len; ++i)
 114                         {
 115                                 u8* data = ctx.refAllocator().alloc_bytes(sizeof(typename IE::value_type));
 116                                 if (data)
 117                                 {
 118                                         typename IE::value_type * v = new (data) typename IE::value_type;
 119                                         //v->clear();
 120                                         ie.push_back(*v);
 121                                 }
 122                                 else
 123                                 {
 124                                         ctx.refErrorCtx().allocatorNoMem(0, sizeof(typename IE::value_type));
 125                                         break;
 126                                 }
 127                         }
 128                 }
 129                 else
 130                         SequenceOfNoExt<IE>::run(ie, ctx);
 131         }
 132 };
 133
 134 //19.5-6 No extension
 135 template <class IE>
 136 struct SequenceOf<IE, std::enable_if_t< (IE::constraint_t::extended == false)> >
 137 {
 138         static void inline run(IE const& ie, EncoderCtx& ctx)
 139         {
 140                 if (IE::constraint_t::lower_bound >= 0 && ie.size() < size_t(IE::constraint_t::lower_bound))
 141                 {
 142                         ctx.refErrorCtx().sizeRangeError(ie.size(), size_t(IE::constraint_t::lower_bound));
 143                 }
 144                 else
 145                 {
 146                         SequenceOfNoExt<IE>::run(ie, ctx);
 147                 }
 148         }
 149         static void inline run(IE& ie, DecoderCtx& ctx)
 150         {
 151                 SequenceOfNoExt<IE>::run(ie, ctx);
 152         }
 153 };
 154
 155 } //namespace per
 156 } //namespace asn