.length property on string literals

Author: CallumDev

src/MoonSharp.Interpreter/Tree/Expression_.cs

@@ -172,7 +172,7 @@ internal static Expression SimpleExp(ScriptLoadingContext lcontext)
 				case TokenType.Number:
 				case TokenType.Number_Hex:
 				case TokenType.Number_HexFloat:
-				case TokenType.String:
+				case TokenType.String when lcontext.Syntax != ScriptSyntax.CLike:
 				case TokenType.String_Long:
 				case TokenType.Nil:
 				case TokenType.True:
@@ -305,6 +305,8 @@ private static Expression PrefixExp(ScriptLoadingContext lcontext)
 			Token T = lcontext.Lexer.Current;
 			switch (T.Type)
 			{
+				case TokenType.String when lcontext.Syntax == ScriptSyntax.CLike:
+					return new LiteralExpression(lcontext, T);
 				case TokenType.Brk_Open_Round:
 					lcontext.Lexer.Next();
 					Expression e = Expr(lcontext);

src/MoonSharp.Tests/EndToEnd/CSyntaxTests.cs

@@ -418,6 +418,14 @@ public void LengthProperty()
             ", s => s.Options.Syntax = ScriptSyntax.CLike);
         }
 
+        [Test]
+        public void LengthStringLiteral()
+        {
+            TestScript.Run(@"
+                assert.areequal(5, 'hello'.length);
+            ", s => s.Options.Syntax = ScriptSyntax.CLike);
+        }
+
         [Test]
         public void LengthPropertyReadonly()
         {