MySql.Data.MySqlClient.SchemaProvider.ParseConstraint C# (CSharp) Method

        private static void ParseConstraint(DataTable fkTable, DataRow table, 
            MySqlTokenizer tokenizer, bool includeColumns)
        {
            string name = tokenizer.NextToken();
            DataRow row = fkTable.NewRow();

            // make sure this constraint is a FK
            string token = tokenizer.NextToken();
            if (token != "foreign" || tokenizer.Quoted)
                return;
            tokenizer.NextToken(); // read off the 'KEY' symbol
            tokenizer.NextToken(); // read off the '(' symbol

            row["CONSTRAINT_CATALOG"] = table["TABLE_CATALOG"];
            row["CONSTRAINT_SCHEMA"] = table["TABLE_SCHEMA"];
            row["TABLE_CATALOG"] = table["TABLE_CATALOG"];
            row["TABLE_SCHEMA"] = table["TABLE_SCHEMA"];
            row["TABLE_NAME"] = table["TABLE_NAME"];
            row["REFERENCED_TABLE_CATALOG"] = null;
            row["CONSTRAINT_NAME"] = name.Trim(new char[] { '\'', '`' });

            ArrayList srcColumns = includeColumns ? ParseColumns(tokenizer) : null;

            // now look for the references section
            while (token != "references" || tokenizer.Quoted)
                token = tokenizer.NextToken();
            string target1 = tokenizer.NextToken();
            string target2 = tokenizer.NextToken();
            if (target2.StartsWith("."))
            {
                row["REFERENCED_TABLE_SCHEMA"] = target1;
                row["REFERENCED_TABLE_NAME"] = target2.Substring(1).Trim(new char[] { '\'', '`' });
                tokenizer.NextToken();  // read off the '('
            }
            else
            {
                row["REFERENCED_TABLE_SCHEMA"] = table["TABLE_SCHEMA"];
                row["REFERENCED_TABLE_NAME"] = target1.Substring(1).Trim(new char[] { '\'', '`' }); ;
            }

            // if we are supposed to include columns, read the target columns
            ArrayList targetColumns = includeColumns ? ParseColumns(tokenizer) : null;

            if (includeColumns)
                ProcessColumns(fkTable, row, srcColumns, targetColumns);
            else
                fkTable.Rows.Add(row);
        }