+
+ //
+ // A query expression is any expression that starts with `from identifier'
+ // followed by any token except ; , =
+ //
+ if (query_parsing == 0) {
+ if (res == Token.FROM && !lambda_arguments_parsing) {
+ PushPosition ();
+ // HACK: to disable generics micro-parser, because PushPosition does not
+ // store identifiers array
+ parsing_generic_less_than = 1;
+ switch (xtoken ()) {
+ case Token.IDENTIFIER:
+ case Token.INT:
+ case Token.BOOL:
+ case Token.BYTE:
+ case Token.CHAR:
+ case Token.DECIMAL:
+ case Token.FLOAT:
+ case Token.LONG:
+ case Token.OBJECT:
+ case Token.STRING:
+ case Token.UINT:
+ case Token.ULONG:
+ int next_token = xtoken ();
+ if (next_token == Token.SEMICOLON || next_token == Token.COMMA || next_token == Token.EQUALS)
+ goto default;
+
+ ++query_parsing;
+ if (RootContext.Version <= LanguageVersion.ISO_2)
+ Report.FeatureIsNotAvailable (Location, "query expressions");
+ break;
+ case Token.VOID:
+ Expression.Error_VoidInvalidInTheContext (Location);
+ break;
+ default:
+ PopPosition ();
+ // HACK: A token is not a keyword so we need to restore identifiers buffer
+ // which has been overwritten before we grabbed the identifier
+ id_builder [0] = 'f'; id_builder [1] = 'r'; id_builder [2] = 'o'; id_builder [3] = 'm';
+ return -1;
+ }
+ PopPosition ();
+ return res;
+ }
+
+ if (res > Token.QUERY_FIRST_TOKEN && res < Token.QUERY_LAST_TOKEN)
+ return -1;
+ }
+
+ if (res == Token.WHERE && !handle_where && query_parsing == 0)