IL2CPP: Change metadata and binary to derive from BinaryObjectStream

Il2CppInspector.Common/FileFormatStreams/WordConversions.cs

@@ -0,0 +1,57 @@
+/*
+    Copyright 2019-2020 Katy Coe - http://www.hearthcode.org - http://www.djkaty.com
+
+    All rights reserved.
+*/
+
+using System;
+
+namespace Il2CppInspector
+{
+    // NOTE: What we really should have done here is add a TWord type parameter to FileFormatReader<T>
+    // then we could probably avoid most of this
+    interface IWordConverter<TWord> where TWord : struct
+    {
+        TWord Add(TWord a, TWord b);
+        TWord Sub(TWord a, TWord b);
+        TWord Div(TWord a, TWord b);
+        TWord Div(TWord a, int b);
+        TWord FromUInt(uint a);
+        TWord FromULong(ulong a);
+        int Int(TWord a);
+        long Long(TWord a);
+        ulong ULong(TWord a);
+        bool Gt(TWord a, TWord b);
+        uint[] UIntArray(TWord[] a);
+    }
+
+    internal class Convert32 : IWordConverter<uint>
+    {
+        public uint Add(uint a, uint b) => a + b;
+        public uint Sub(uint a, uint b) => a - b;
+        public uint Div(uint a, uint b) => a / b;
+        public uint Div(uint a, int b) => a / (uint)b;
+        public uint FromUInt(uint a) => a;
+        public uint FromULong(ulong a) => (uint) a;
+        public int Int(uint a) => (int)a;
+        public long Long(uint a) => a;
+        public ulong ULong(uint a) => a;
+        public bool Gt(uint a, uint b) => a > b;
+        public uint[] UIntArray(uint[] a) => a;
+    }
+
+    internal class Convert64 : IWordConverter<ulong>
+    {
+        public ulong Add(ulong a, ulong b) => a + b;
+        public ulong Sub(ulong a, ulong b) => a - b;
+        public ulong Div(ulong a, ulong b) => a / b;
+        public ulong Div(ulong a, int b) => a / (uint)b;
+        public ulong FromUInt(uint a) => a;
+        public ulong FromULong(ulong a) => a;
+        public int Int(ulong a) => (int)a;
+        public long Long(ulong a) => (long)a;
+        public ulong ULong(ulong a) => a;
+        public bool Gt(ulong a, ulong b) => a > b;
+        public uint[] UIntArray(ulong[] a) => Array.ConvertAll(a, x => (uint)x);
+    }
+}