Initial const eval feature release

BeefLibs/corlib/src/Attribute.bf

@@ -260,6 +260,12 @@ namespace System
 
 	}
 
+	[AttributeUsage(.Method | .Invocation)]
+	public struct ConstEvalAttribute : Attribute
+	{
+
+	}
+
 	[AttributeUsage(.Method /*2*/)]
 	public struct IntrinsicAttribute : Attribute
 	{

BeefLibs/corlib/src/Compiler.bf

@@ -34,5 +34,21 @@ namespace System
 
 		[LinkName("#IsConstEval")]
 		public static extern bool IsConstEval;
+
+		[LinkName("#IsBuilding")]
+		public static extern bool IsBuilding;
+
+		[LinkName("#IsReified")]
+		public static extern bool IsReified;
+
+		[LinkName("#CompileRev")]
+		public static extern int32 CompileRev;
+
+		[ConstEval]
+		public static void Assert(bool cond)
+		{
+			if (!cond)
+				Runtime.FatalError("Assert failed");
+		}
 	}
 }

BeefLibs/corlib/src/Reflection/FieldInfo.bf

@@ -36,6 +36,30 @@ namespace System.Reflection
 	        }
 	    }
 
+		public bool IsConst
+		{
+			get
+			{
+				return mFieldData.mFlags.HasFlag(.Const);
+			}
+		}
+
+		public bool IsStatic
+		{
+			get
+			{
+				return mFieldData.mFlags.HasFlag(.Static);
+			}
+		}
+
+		public bool IsInstanceField
+		{
+			get
+			{
+				return !mFieldData.mFlags.HasFlag(.Static) && !mFieldData.mFlags.HasFlag(.Const);
+			}
+		}
+
 		public StringView Name
 		{
 			get
@@ -520,6 +544,14 @@ namespace System.Reflection
 	            }
 	        }
 
+			public int32 Index
+			{
+				get
+				{
+					return mIdx;
+				}
+			}
+
 			public Result<FieldInfo> GetNext() mut
 			{
 				if (!MoveNext())

BeefLibs/corlib/src/Type.bf

@@ -454,14 +454,20 @@ namespace System
         {
             return (int32)mTypeId;
         }
-        
+
+		static extern Type ConstEval_GetTypeById(int32 typeId);
+
         protected static Type GetType(TypeId typeId)
         {
+			if (Compiler.IsConstEval)
+				return ConstEval_GetTypeById((.)typeId);
             return sTypes[(int32)typeId];
         }
 
 		protected static Type GetType_(int32 typeId)
 		{
+			if (Compiler.IsConstEval)
+				return ConstEval_GetTypeById(typeId);
 		    return sTypes[typeId];
 		}