private AST Group2()
{
var ast = Group1();
if (CurrentToken.TokenType == TokenType.Function)
{
if (ast != null)
{
ThrowUnexpectedTokenTypeException();
}
switch (CurrentToken.Value)
{
case "ToString":
ast = new ToStringFunction(CurrentToken);
break;
case "DateTime.Now":
ast = new DateTimeFunction(CurrentToken);
break;
case "string.Concat":
ast = new StringConcatFunction(CurrentToken);
break;
case "AddMonths":
ast = new AddMonths(CurrentToken);
break;
default:
ThrowUnexpectedTokenTypeException();
break;
}
CurrentToken = _lexer.GetNextToken();
if (CurrentToken.TokenType != TokenType.OpenParenthesis)
{
ThrowUnexpectedTokenTypeException();
}
CurrentToken = _lexer.GetNextToken();
while (CurrentToken.TokenType != TokenType.CloseParenthesis)
{
ast.ChildNodes.Add(Group10());
if (CurrentToken.TokenType == TokenType.Separator)
{
CurrentToken = _lexer.GetNextToken();
}
}
CurrentToken = _lexer.GetNextToken();
}
return(ast);
}
private AST Group10()
{
var ast = Group6();
if (ast == null)
{
ThrowUnexpectedTokenTypeException();
}
while (CurrentToken.TokenType == TokenType.StringConcat)
{
var token = CurrentToken;
CurrentToken = _lexer.GetNextToken();
ast = new StringConcatFunction(ast, token, Group6());
}
return(ast);
}
