public static SqlTemplate Parse(string input)
{
if (input == null)
{
throw new ArgumentNullException(nameof(input));
}
var reader = new CharSequenceReader(input);
bool parsingParameter = false;
var template = new SqlTemplate();
template.RawString = input;
var ls = new List <SqlTemplateSegment>();
var segmentBuilder = new StringBuilder();
while (reader.HasNext())
{
reader.Next();
if (reader.Current() == '@' && !parsingParameter)
{
if (segmentBuilder.Length != 0)
{
ls.Add(new SqlTemplateSegment(segmentBuilder.ToString(), false));
segmentBuilder.Clear();
}
parsingParameter = true;
}
else if (parsingParameter && (reader.Current() == ' ' || reader.Current() == '\r' || reader.Current() == '\n' || reader.Current() == '\t'))
{
bool followIn = ls.Count == 0 ? false :
ls[ls.Count - 1].Value.ToLower().Trim().EndsWith(" in") ? true :
false;
ls.Add(new SqlTemplateSegment(segmentBuilder.ToString(), true, followIn));
segmentBuilder.Clear();
parsingParameter = false;
}
else
{
segmentBuilder.Append(reader.Current());
}
}
if (segmentBuilder.Length != 0)
{
if (parsingParameter)
{
bool followIn = ls.Count == 0 ? false :
ls[ls.Count - 1].Value.ToLower().Trim().EndsWith(" in") ? true :
false;
ls.Add(new SqlTemplateSegment(segmentBuilder.ToString(), true, followIn));
}
else
{
ls.Add(new SqlTemplateSegment(segmentBuilder.ToString(), false));
}
}
template.Segments = ls.ToArray();
return(template);
}