From 36b050fc08373836381413e61bc0469034800e0c Mon Sep 17 00:00:00 2001
From: Mike Nolan <tesses@tesses.net>
Date: Tue, 23 Sep 2025 20:29:29 -0500
Subject: [PATCH] Move bitconverter from crosslang to tessesframework

---
 CMakeLists.txt                                |  1 +
 .../Serialization/BitConverter.hpp            | 48 +++++++++++
 include/TessesFramework/TessesFramework.hpp   |  1 +
 src/Serialization/BitConverter.cpp            | 85 +++++++++++++++++++
 4 files changed, 135 insertions(+)
 create mode 100644 include/TessesFramework/Serialization/BitConverter.hpp
 create mode 100644 src/Serialization/BitConverter.cpp

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 64721e9..858590c 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -18,6 +18,7 @@ src/Http/WebSocket.cpp
 src/Mail/Smtp.cpp
 src/Serialization/Json.cpp
 src/Serialization/SQLite.cpp
+src/Serialization/BitConverter.cpp
 src/Platform/Environment.cpp
 src/Platform/Process.cpp
 src/Streams/FileStream.cpp
diff --git a/include/TessesFramework/Serialization/BitConverter.hpp b/include/TessesFramework/Serialization/BitConverter.hpp
new file mode 100644
index 0000000..af8b411
--- /dev/null
+++ b/include/TessesFramework/Serialization/BitConverter.hpp
@@ -0,0 +1,48 @@
+#pragma once
+#include "../Common.hpp"
+namespace Tesses::Framework::Serialization
+{
+    
+/**
+ * @brief A bit converter
+ * 
+ */
+class BitConverter {
+    public:
+        /**
+         * @brief Get the bits of a double from a int64_t
+         * 
+         * @param v a int64_t with double's bits
+         * @return double the double
+         */
+        static double ToDoubleBits(uint64_t v);
+        /**
+         * @brief Get the bits of a int64_t from a double
+         * 
+         * @param v a double with int64_t's bits
+         * @return uint64_t the int64_t
+         */
+        static uint64_t ToUintBits(double v);
+        /**
+         * @brief Get big endian double from uint8_t reference of first element of 8 byte array
+         * 
+         * @param b a reference to the first byte of an array
+         * @return double the double
+         */
+        static double ToDoubleBE(uint8_t& b);
+        /**
+         * @brief Get big endian uint64_t from uint8_t reference of first element of 8 byte array
+         * 
+         * @param b a reference to the first byte of an array
+         * @return uint64_t the uint64_t
+         */
+        static uint64_t ToUint64BE(uint8_t& b);
+        static uint32_t ToUint32BE(uint8_t& b);
+        static uint16_t ToUint16BE(uint8_t& b);
+        static void FromDoubleBE(uint8_t& b, double v);
+        static void FromUint64BE(uint8_t& b, uint64_t v);
+        static void FromUint32BE(uint8_t& b, uint32_t v);
+        static void FromUint16BE(uint8_t& b, uint16_t v);
+};
+
+}
\ No newline at end of file
diff --git a/include/TessesFramework/TessesFramework.hpp b/include/TessesFramework/TessesFramework.hpp
index d36a997..974cbdf 100644
--- a/include/TessesFramework/TessesFramework.hpp
+++ b/include/TessesFramework/TessesFramework.hpp
@@ -37,3 +37,4 @@
 #include "Platform/Environment.hpp"
 #include "Platform/Process.hpp"
 #include "Text/StringConverter.hpp"
+#include "Serialization/BitConverter.hpp"
\ No newline at end of file
diff --git a/src/Serialization/BitConverter.cpp b/src/Serialization/BitConverter.cpp
new file mode 100644
index 0000000..72651a7
--- /dev/null
+++ b/src/Serialization/BitConverter.cpp
@@ -0,0 +1,85 @@
+#include "TessesFramework/Serialization/BitConverter.hpp"
+
+namespace Tesses::Framework::Serialization
+{
+    double BitConverter::ToDoubleBits(uint64_t v)
+    {
+        return *(double*)&v;
+    }
+    uint64_t BitConverter::ToUintBits(double v)
+    {
+        return *(uint64_t*)&v;
+    }
+    double BitConverter::ToDoubleBE(uint8_t& b)
+    {
+        return ToDoubleBits(ToUint64BE(b));
+    }
+    uint64_t BitConverter::ToUint64BE(uint8_t& b)
+    {
+        uint8_t* b2 = &b;
+        uint64_t v = 0;
+        v |= ((uint64_t)b2[0] << 56);
+        v |= ((uint64_t)b2[1] << 48);
+        v |= ((uint64_t)b2[2] << 40);
+        v |= ((uint64_t)b2[3] << 32);
+        v |= ((uint64_t)b2[4] << 24);
+        v |= ((uint64_t)b2[5] << 16);
+        v |= ((uint64_t)b2[6] << 8);
+        v |= (uint64_t)b2[7];
+        return v;
+    }
+    uint32_t BitConverter::ToUint32BE(uint8_t& b)
+    {
+        uint8_t* b2 = &b;
+        uint32_t v = 0;
+       
+        v |= ((uint32_t)b2[0] << 24);
+        v |= ((uint32_t)b2[1] << 16);
+        v |= ((uint32_t)b2[2] << 8);
+        v |= (uint32_t)b2[3];
+        return v;
+    }
+    uint16_t BitConverter::ToUint16BE(uint8_t& b)
+    {
+        uint8_t* b2 = &b;
+        uint16_t v = 0;
+       
+        
+        v |= ((uint16_t)b2[0] << 8);
+        v |= (uint16_t)b2[1];
+        return v;
+    }
+    void BitConverter::FromDoubleBE(uint8_t& b, double v)
+    {
+        FromUint64BE(b,ToUintBits(v));
+    }
+    void BitConverter::FromUint64BE(uint8_t& b, uint64_t v)
+    {
+        uint8_t* b2 = &b;
+        b2[0] = (uint8_t)(v >> 56);
+        b2[1] = (uint8_t)(v >> 48);
+        b2[2] = (uint8_t)(v >> 40);
+        b2[3] = (uint8_t)(v >> 32);
+        b2[4] = (uint8_t)(v >> 24);
+        b2[5] = (uint8_t)(v >> 16);
+        b2[6] = (uint8_t)(v >> 8);
+        b2[7] = (uint8_t)v;
+    }
+    void BitConverter::FromUint32BE(uint8_t& b, uint32_t v)
+    {
+        uint8_t* b2 = &b;
+        
+        b2[0] = (uint8_t)(v >> 24);
+        b2[1] = (uint8_t)(v >> 16);
+        b2[2] = (uint8_t)(v >> 8);
+        b2[3] = (uint8_t)v;
+    }
+    void BitConverter::FromUint16BE(uint8_t& b, uint16_t v)
+    {
+        uint8_t* b2 = &b;
+        
+        b2[0] = (uint8_t)(v >> 8);
+        b2[1] = (uint8_t)v;
+    }
+
+};
\ No newline at end of file