+ struct AssignmentList
+ {
+ std::vector<ProgramSyntax::Node *> nodes;
+ bool conditional;
+ bool self_referencing;
+ };
+
+ typedef std::map<ProgramSyntax::VariableDeclaration *, AssignmentList> BlockAssignmentMap;
+
+ std::set<ProgramSyntax::Node *> unused_nodes;
+ std::map<ProgramSyntax::VariableDeclaration *, ProgramSyntax::Node *> aggregates;
+ ProgramSyntax::Node *aggregate;
+ std::vector<BlockAssignmentMap> assignments;
+ ProgramSyntax::Assignment *assignment;
+ bool assignment_target;
+
+ UnusedVariableLocator();