private static void ReadFilters(Tokenizer tokenizer, GraphQuery query)
{
tokenizer.SkipWhitespace();
if (tokenizer.NextChar != '(')
{
return;
}
tokenizer.Advance();
do
{
tokenizer.SkipWhitespace();
if (tokenizer.NextChar == ')')
{
tokenizer.Advance();
return;
}
var parameter = tokenizer.ReadIdentifier();
tokenizer.SkipWhitespace();
if (tokenizer.NextChar != ':')
{
throw new InvalidOperationException("Filter " + parameter + " does not provide a value");
}
tokenizer.Advance();
tokenizer.SkipWhitespace();
var value = tokenizer.ReadValue();
tokenizer.SkipWhitespace();
if (tokenizer.NextChar == ',')
{
tokenizer.Advance();
}
else if (tokenizer.NextChar != ')')
{
throw new InvalidOperationException("Parse error after " + parameter + " filter, found: " + tokenizer.NextChar);
}
query.Filters.Add(parameter.ToString(), value.ToString());
} while (true);
}
private static GraphQuery Parse(Tokenizer tokenizer)
{
tokenizer.SkipWhitespace();
var objectType = tokenizer.ReadIdentifier();
var query = new GraphQuery(objectType.ToString());
ReadFilters(tokenizer, query);
var fields = new List <GraphQueryField>();
ReadFields(tokenizer, fields);
if (fields.Count > 0)
{
query.Fields = fields.ToArray();
}
return(query);
}
