public NullLiteralExpression null_literal()
{
NullLiteralExpression expression = null;
IToken token = null;
try
{
token = this.LT(1);
this.match(0x1d);
if (base.inputState.guessing == 0)
{
expression = new NullLiteralExpression(ToLexicalInfo(token));
}
}
catch (RecognitionException exception)
{
if (base.inputState.guessing != 0)
{
throw;
}
this.reportError(exception);
this.recover(exception, tokenSet_20_);
return expression;
}
return expression;
}