Method pass1

src/dsql/StmtNodes.cpp:322–361

}

AssignmentNode* AssignmentNode::pass1(thread_db* tdbb, CompilerScratch* csb)
{
	ValueExprNode* sub = asgnFrom;
	FieldNode* fieldNode;
	StreamType stream;
	CompilerScratch::csb_repeat* tail;

	if ((fieldNode = nodeAs<FieldNode>(sub)))
	{
		stream = fieldNode->fieldStream;
		jrd_fld* field = MET_get_field(csb->csb_rpt[stream].csb_relation, fieldNode->fieldId);

		if (field)
			missing2 = field->fld_missing_value;
	}

	sub = asgnTo;

	if ((fieldNode = nodeAs<FieldNode>(sub)))
	{
		stream = fieldNode->fieldStream;
		tail = &csb->csb_rpt[stream];
		jrd_fld* field = MET_get_field(tail->csb_relation, fieldNode->fieldId);

		if (field && field->fld_missing_value)
			missing = field->fld_missing_value;
	}

	doPass1(tdbb, csb, asgnFrom.getAddress());

	{	// scope
		AutoSetRestore<ExprNode*> autoCurrentAssignTarget(&csb->csb_currentAssignTarget, asgnTo);
		doPass1(tdbb, csb, asgnTo.getAddress());
	}

	doPass1(tdbb, csb, missing.getAddress());
	// ASF: No idea why we do not call pass1 for missing2.

	return this;
}

AssignmentNode* AssignmentNode::pass2(thread_db* tdbb, CompilerScratch* csb)
{