Flee

ExpressionElements/Literals/DateTime.cs

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+using System.Reflection;
+using System.Reflection.Emit;
+using System.Globalization;
+using Flee.ExpressionElements.Base.Literals;
+
+using Flee.InternalTypes;
+using Flee.PublicTypes;
+using Flee.Resources;
+
+namespace Flee.ExpressionElements.Literals
+{
+    internal class DateTimeLiteralElement : LiteralElement
+    {
+        private DateTime _myValue;
+        public DateTimeLiteralElement(string image, ExpressionContext context)
+        {
+            ExpressionParserOptions options = context.ParserOptions;
+
+            if (DateTime.TryParseExact(image, options.DateTimeFormat, CultureInfo.InvariantCulture, DateTimeStyles.None, out _myValue) == false)
+            {
+                base.ThrowCompileException(CompileErrorResourceKeys.CannotParseType, CompileExceptionReason.InvalidFormat, typeof(DateTime).Name);
+            }
+        }
+
+        public override void Emit(FleeILGenerator ilg, IServiceProvider services)
+        {
+            int index = ilg.GetTempLocalIndex(typeof(DateTime));
+
+            Utility.EmitLoadLocalAddress(ilg, index);
+
+            LiteralElement.EmitLoad(_myValue.Ticks, ilg);
+
+            ConstructorInfo ci = typeof(DateTime).GetConstructor(new Type[] { typeof(long) });
+
+            ilg.Emit(OpCodes.Call, ci);
+
+            Utility.EmitLoadLocal(ilg, index);
+        }
+
+        public override System.Type ResultType => typeof(DateTime);
+    }
+}