C++: Add boilerplate for type parsing

Il2CppInspector.Common/Cpp/CppType.cs

@@ -0,0 +1,73 @@
+/*
+    Copyright 2020 Katy Coe - http://www.hearthcode.org - http://www.djkaty.com
+
+    All rights reserved.
+*/
+
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Runtime.CompilerServices;
+using System.Text;
+
+namespace Il2CppInspector.Cpp
+{
+    public abstract class CppType
+    {
+        // Calculate the size of the C++ type in bytes
+        public abstract int GetSize();
+    }
+
+    // A non-struct non-class type
+    public class CppPrimitiveType : CppType
+    {
+        private readonly int size;
+
+        public override int GetSize() => size;
+
+        public CppPrimitiveType(int size) => this.size = size;
+    }
+
+    // A struct or class type
+    public class CppComplexType : CppType
+    {
+        // Dictionary of byte offset in the type to each field
+        public Dictionary<int, CppField> Fields { get; } = new Dictionary<int, CppField>();
+
+        // Calculate the size by summing the size of each field's type
+        public override int GetSize() => Fields.Values.Select(f => f.Type.GetSize()).Sum();
+    }
+
+    // A field in a C++ type
+    public struct CppField
+    {
+        // The name of the field
+        public string Name { get; }
+
+        // The type of the field
+        public CppType Type { get; }
+    }
+
+    // A collection of C++ types
+    public class CppTypes
+    {
+        private Dictionary<string, CppType> types { get; }
+
+        public CppType this[string s] => types[s];
+
+        public CppTypes() {
+            types = new Dictionary<string, CppType> {
+                ["uint8_t"] = new CppPrimitiveType(1),
+                ["uint16_t"] = new CppPrimitiveType(2),
+                ["uint32_t"] = new CppPrimitiveType(4),
+                ["uint64_t"] = new CppPrimitiveType(8),
+                ["int8_t"] = new CppPrimitiveType(1),
+                ["int16_t"] = new CppPrimitiveType(2),
+                ["int32_t"] = new CppPrimitiveType(4),
+                ["int64_t"] = new CppPrimitiveType(8),
+                ["char"]  = new CppPrimitiveType(1),
+                ["void"] = new CppPrimitiveType(4), // or 8; pointer
+            };
+        }
+    }
+}