X-Git-Url: https://gerrit.o-ran-sc.org/r/gitweb?p=sim%2Fe2-interface.git;a=blobdiff_plain;f=e2sim%2Fe2apv1sim%2Fricsim%2Fsrc%2FASN1%2Fasn%2Fper%2Fbinary_integer.hpp;fp=e2sim%2Fe2apv1sim%2Fricsim%2Fsrc%2FASN1%2Fasn%2Fper%2Fbinary_integer.hpp;h=6ba2f1591d2a982fcc797c4ad6d1a279df7a3d94;hp=0000000000000000000000000000000000000000;hb=3ebf932d23dcbec9ed19f4a51f9d00a0a54f5124;hpb=6896318f2b4ff01b4a88b16019c3dc93b0b693f5

diff --git a/e2sim/e2apv1sim/ricsim/src/ASN1/asn/per/binary_integer.hpp b/e2sim/e2apv1sim/ricsim/src/ASN1/asn/per/binary_integer.hpp
new file mode 100755
index 0000000..6ba2f15
--- /dev/null
+++ b/e2sim/e2apv1sim/ricsim/src/ASN1/asn/per/binary_integer.hpp
@@ -0,0 +1,168 @@
+#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