Loyc.Ecs.Parser.EcsParser.ExprStart C# (CSharp) Method

		public LNode ExprStart(bool allowUnassignedVarDecl)
		{
			TokenType la0, la1;
			LNode result = default(LNode);
			// Line 705: ((TT.Id | IdNotLinqKeyword) TT.Colon ExprStartNNP / ExprStartNNP)
			la0 = LA0;
			if (la0 == TT.ContextualKeyword || la0 == TT.Id) {
				la1 = LA(1);
				if (la1 == TT.Colon) {
					// line 705
					Token argName = default(Token);
					// Line 706: (TT.Id | IdNotLinqKeyword)
					la0 = LA0;
					if (la0 == TT.Id)
						argName = MatchAny();
					else
						argName = IdNotLinqKeyword();
					var colon = MatchAny();
					result = ExprStartNNP(allowUnassignedVarDecl);
					// line 708
					result = F.Call(S.NamedArg, F.Id(argName), result, argName.StartIndex, result.Range.EndIndex, colon.StartIndex, colon.EndIndex, NodeStyle.Operator);
				} else
					result = ExprStartNNP(allowUnassignedVarDecl);
			} else
				result = ExprStartNNP(allowUnassignedVarDecl);
			return result;
		}
	

		protected override void Stmt(string text, LNode expected, Action<EcsPrinterOptions> configure = null, Mode mode = Mode.Both)
		{
			bool exprMode = (mode & Mode.Expression) != 0;
			if ((mode & Mode.ParserTest) == 0)
				return;
			var sink = (mode & Mode.ExpectAndDropParserError) != 0 ? new MessageHolder() : (IMessageSink)ConsoleMessageSink.Value;
			// This is the easy way: 
			//LNode result = EcsLanguageService.Value.ParseSingle(text, sink, exprMode ? ParsingMode.Expressions : ParsingMode.Statements, preserveComments: true);
			// But to make debugging easier, I'll do it the long way:
			ILexer<Token> lexer = EcsLanguageService.Value.Tokenize(new UString(text), "", ConsoleMessageSink.Value);
			var preprocessed = new EcsPreprocessor(lexer, true);
			var treeified = new TokensToTree(preprocessed, false);
			var parser = new EcsParser(treeified.Buffered(), lexer.SourceFile, sink);
			VList<LNode> results = exprMode ? LNode.List(parser.ExprStart(false)) : LNode.List(parser.ParseStmtsGreedy());
			//if (!preprocessed.TriviaList.IsEmpty) 
			{
				// Inject comments
				var injector = new EcsTriviaInjector(preprocessed.TriviaList, preprocessed.SourceFile, (int)TokenType.Newline, "/*", "*"+"/", "//");
				results = LNode.List(injector.Run(results.GetEnumerator()).ToList());
			}
			LNode result = results.AsLNode(S.Splice);
			AreEqual(TokenType.EOF, parser.LT0.Type(), string.Format("Parser stopped before EOF at [{0}] in {1}", parser.LT0.StartIndex, text));

			if ((mode & Mode.IgnoreTrivia) != 0)
				result = result.ReplaceRecursive(n => n.IsTrivia ? Maybe<LNode>.NoValue : n, LNode.ReplaceOpt.ProcessAttrs).Value;
			AreEqual(expected, result);
			if (sink is MessageHolder)
				GreaterOrEqual(((MessageHolder)sink).List.Count, 1, "Expected an error but got none for "+text);
		}