Improvements and safety for const exprs

IDEHelper/Tests/src/ConstExprs.bf

@@ -0,0 +1,62 @@
+#pragma warning disable 168
+using System;
+namespace Tests
+{
+	class ConstExprs
+	{
+		enum EnumA
+		{
+			A,
+			B,
+			C
+		}
+
+		class ClassA<T, TSize> where TSize : const int
+		{
+			public int GetVal()
+			{
+				return TSize;
+			}
+		}
+
+		class ClassB<T, TSize> where TSize : const int
+		{
+			ClassA<T, TSize> mVal = new ClassA<T, const TSize>();
+			var mVal2 = new ClassA<T, const TSize + 100>();
+
+			public int GetVal()
+			{
+				return mVal.GetVal();
+			}
+
+			public int GetVal2()
+			{
+				return mVal2.GetVal();
+			}
+		}
+
+		class ClassC<TEnum> where TEnum : const EnumA
+		{
+			public int Test()
+			{
+				EnumA ea = TEnum;
+				if (TEnum == .A)
+				{
+					return 1;
+				}
+				return 0;
+			}
+		}
+
+		[Test]
+		public static void TestBasics()
+		{
+			ClassB<float, const 123> cb = scope .();
+			Test.Assert(cb.GetVal() == 123);
+			Test.Assert(cb.GetVal2() == 223);
+
+			ClassC<const EnumA.A> cc = scope .();
+			Test.Assert(cc.Test() == 1);
+		}
+	}
+}