public override Expression VisitStringAtom([NotNull] ExpressionAntlrParser.StringAtomContext context)
{
var text = context.GetText();
if (text.StartsWith("'"))
{
return(Expression.ConstantExpression(Regex.Unescape(text.Trim('\''))));
}
else
{
// start with "
return(Expression.ConstantExpression(Regex.Unescape(text.Trim('"'))));
}
}
public override Expression VisitStringAtom([NotNull] ExpressionAntlrParser.StringAtomContext context)
{
var text = context.GetText();
if (text.StartsWith("'") && text.EndsWith("'"))
{
text = text.Substring(1, text.Length - 2).Replace("\\'", "'");
}
else if (text.StartsWith("\"") && text.EndsWith("\""))
{
text = text.Substring(1, text.Length - 2).Replace("\\\"", "\"");
}
else
{
throw new Exception($"Invalid string {text}");
}
return(Expression.ConstantExpression(EvalEscape(text)));
}
