Enhanced SIM for E2AP v1 for TS UC

[sim/e2-interface.git] / e2sim / e2apv1sim / src / ASN1 / asn / per / context.hpp

diff --git a/e2sim/e2apv1sim/src/ASN1/asn/per/context.hpp b/e2sim/e2apv1sim/src/ASN1/asn/per/context.hpp
new file mode 100755 (executable)
index 0000000..2a5d7e9
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+++ b/e2sim/e2apv1sim/src/ASN1/asn/per/context.hpp
@@ -0,0 +1,154 @@
+#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
+#include <climits>
+
+// Local Includes: Application specific classes, functions, and libraries
+#include "asn/utility.hpp"
+#include "asn/buffer.hpp"
+#include "asn/error_context.hpp"
+
+namespace asn {
+namespace per {
+
+/********************************************************************************
+EncoderCtx
+*********************************************************************************/
+class EncoderCtx : boost::noncopyable
+{
+public:
+       typedef buffer<u8*> buf_type;
+
+       EncoderCtx(u8* data, size_t size)
+               : m_buffer{ m_errCtx }
+       {
+               Reset(data, size);
+       }
+
+       template <size_t SIZE>
+       explicit EncoderCtx(u8(&buff)[SIZE])
+               : EncoderCtx(buff, SIZE)
+       {
+       }
+
+       explicit EncoderCtx()
+               : EncoderCtx(nullptr, 0)
+       {
+       }
+
+       buf_type& refBuffer() { return m_buffer; }
+       error_context& refErrorCtx() { return m_errCtx; }
+       explicit operator bool() const { return static_cast<bool>(m_errCtx); }
+
+       void Reset(void* data = nullptr, size_t size = 0)
+       {
+               m_buffer.reset(static_cast<u8*>(data), size);
+               m_errCtx.reset();
+       }
+
+       //Name of the being processed IE
+       void ie_name(const char* name) { m_errCtx.ie_name(name); }
+       char const* ie_name() const { return m_errCtx.ie_name(); }
+
+       void container_name(const char* name) { m_errCtx.container_name(name); }
+       char const* container_name() const { return m_errCtx.container_name(); }
+
+private:
+       template <class IE, int IE_TYPE>
+       friend struct Encode;
+
+       error_context                   m_errCtx;
+       buf_type                                m_buffer;
+};
+
+
+/********************************************************************************
+DecoderCtx
+*********************************************************************************/
+class DecoderCtx : boost::noncopyable
+{
+public:
+       typedef buffer<u8 const*>       buf_type;
+       typedef allocator                       alloc_type;
+       typedef u64                                     map_type;
+
+       DecoderCtx(const void* data = nullptr, size_t size = 0, void* alloc_buffer = nullptr, size_t alloc_buffer_size = 0)
+               : m_buffer{ m_errCtx }
+       {
+               reset(data, size, alloc_buffer, alloc_buffer_size);
+       }
+
+       buf_type& refBuffer() { return m_buffer; }
+       alloc_type& refAllocator() { return m_allocator; }
+       error_context& refErrorCtx() { return m_errCtx; }
+       explicit operator bool() const { return static_cast<bool>(m_errCtx); }
+
+       void reset(const void* data = nullptr, size_t size = 0, void* alloc_buffer = nullptr, size_t alloc_buffer_size = 0)
+       {
+               m_allocator.reset(alloc_buffer, alloc_buffer_size);
+               m_buffer.reset(static_cast<u8 const*>(data), size);
+               m_errCtx.reset();
+               m_map = 0;
+               m_container = nullptr;
+       }
+
+       bool map_elm()
+       {
+               //m_map = (m_map << 1) | (m_map >> (sizeof(m_map)*CHAR_BIT - 1));
+               //return m_map & 1u;
+
+               constexpr map_type mask = ((map_type)1) << (sizeof(map_type)*CHAR_BIT - 1);
+
+               bool rv = m_map & mask;
+               m_map = m_map << 1;
+
+               return rv;
+       }
+
+       map_type set_map(map_type map)
+       {
+               map_type rval = m_map;
+               m_map = map;
+               return rval;
+       }
+
+       map_type get_map() const {return m_map;}
+
+       //Pointer to container (SEQ | CHO)
+       void*                                   m_container{ nullptr };
+
+       //Name of the being processed IE
+       void ie_name(const char* name) { m_errCtx.ie_name(name); }
+       char const* ie_name() const { return m_errCtx.ie_name(); }
+
+       void container_name(const char* name) { m_errCtx.container_name(name); }
+       char const* container_name() const { return m_errCtx.container_name(); }
+
+private:
+       //Optional or Extension elements' presence bitmap. Used in sequences
+       map_type                                m_map{ 0 };
+       error_context                   m_errCtx;
+       buf_type                                m_buffer;
+       alloc_type                              m_allocator;
+};
+
+} //namespace per
+} //namespace asn