static void Scan(IvarUsageMap& M, const Stmt *S) {
if (!S)
return;
if (const ObjCIvarRefExpr *Ex = dyn_cast<ObjCIvarRefExpr>(S)) {
const ObjCIvarDecl *D = Ex->getDecl();
IvarUsageMap::iterator I = M.find(D);
if (I != M.end())
I->second = Used;
return;
}
// Blocks can reference an instance variable of a class.
if (const BlockExpr *BE = dyn_cast<BlockExpr>(S)) {
Scan(M, BE->getBody());
return;
}
if (const PseudoObjectExpr *POE = dyn_cast<PseudoObjectExpr>(S))
for (PseudoObjectExpr::const_semantics_iterator
i = POE->semantics_begin(), e = POE->semantics_end(); i != e; ++i) {
const Expr *sub = *i;
if (const OpaqueValueExpr *OVE = dyn_cast<OpaqueValueExpr>(sub))
sub = OVE->getSourceExpr();
Scan(M, sub);
}
for (Stmt::const_child_iterator I=S->child_begin(),E=S->child_end(); I!=E;++I)
Scan(M, *I);
}
static void Scan(IvarUsageMap& M, ObjCPropertyImplDecl* D) {
if (!D)
return;
ObjCIvarDecl* ID = D->getPropertyIvarDecl();
if (!ID)
return;
IvarUsageMap::iterator I = M.find(ID);
if (I != M.end()) I->second = Used;
}
static void Scan(IvarUsageMap& M, Stmt* S) {
if (!S)
return;
if (ObjCIvarRefExpr* Ex = dyn_cast<ObjCIvarRefExpr>(S)) {
ObjCIvarDecl* D = Ex->getDecl();
IvarUsageMap::iterator I = M.find(D);
if (I != M.end()) I->second = Used;
return;
}
for (Stmt::child_iterator I=S->child_begin(), E=S->child_end(); I!=E; ++I)
Scan(M, *I);
}
static void Scan(IvarUsageMap& M, const Stmt* S) {
if (!S)
return;
if (const ObjCIvarRefExpr *Ex = dyn_cast<ObjCIvarRefExpr>(S)) {
const ObjCIvarDecl *D = Ex->getDecl();
IvarUsageMap::iterator I = M.find(D);
if (I != M.end())
I->second = Used;
return;
}
// Blocks can reference an instance variable of a class.
if (const BlockExpr *BE = dyn_cast<BlockExpr>(S)) {
Scan(M, BE->getBody());
return;
}
for (Stmt::const_child_iterator I=S->child_begin(),E=S->child_end(); I!=E;++I)
Scan(M, *I);
}
