Function PAR_parse_node

src/jrd/par.cpp:1601–1654

Parse a BLR node.

// Parse a BLR node.
DmlNode* PAR_parse_node(thread_db* tdbb, CompilerScratch* csb)
{
	SET_TDBB(tdbb);

	const ULONG blrOffset = csb->csb_blr_reader.getOffset();
	const SSHORT blrOperator = csb->csb_blr_reader.getByte();

	if (blrOperator < 0 || blrOperator >= FB_NELEM(blr_parsers))
	{
        // NS: This error string is correct, please do not mangle it again and again.
		// The whole error message is "BLR syntax error: expected %s at offset %d, encountered %d"
		PAR_syntax_error(csb, "valid BLR code");
    }

	// Dispatch on operator type.

	switch (blrOperator)
	{
		case blr_rse:
		case blr_lateral_rse:
		case blr_rs_stream:
		case blr_singular:
		case blr_scrollable:
			csb->csb_blr_reader.seekBackward(1);
			return PAR_rse(tdbb, csb);

		case blr_pid:
		case blr_pid2:
		case blr_procedure:
		case blr_procedure2:
		case blr_procedure3:
		case blr_procedure4:
		case blr_subproc:
		case blr_relation:
		case blr_rid:
		case blr_relation2:
		case blr_rid2:
		case blr_local_table_id:
		case blr_union:
		case blr_recurse:
		case blr_window:
		case blr_aggregate:
			csb->csb_blr_reader.seekBackward(1);
			return PAR_parseRecordSource(tdbb, csb);
	}

	if (!blr_parsers[blrOperator])
		PAR_syntax_error(csb, "valid BLR code");

	DmlNode* node = blr_parsers[blrOperator](tdbb, *tdbb->getDefaultPool(), csb, blrOperator);
	setNodeLineColumn(csb, node, blrOffset);

	return node;
}


void PAR_syntax_error(CompilerScratch* csb, const TEXT* string)