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Added transfer function for DeclStmt. 

llvm-svn: 46323
This commit is contained in:
Ted Kremenek 2008-01-24 20:55:43 +00:00
parent 1fba169ce0
commit 053527478b
1 changed files with 39 additions and 6 deletions
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45
clang/Analysis/GRConstants.cpp
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@ -457,7 +457,8 @@ public:
class VISIBILITY_HIDDEN LValueDecl : public LValue {
public:
LValueDecl(ValueDecl* vd) : LValue(LValueDeclKind,vd) {}
LValueDecl(const ValueDecl* vd)
: LValue(LValueDeclKind,const_cast<ValueDecl*>(vd)) {}
ValueDecl* getDecl() const {
return static_cast<ValueDecl*>(getRawPtr());
@ -544,6 +545,7 @@ public:
typedef ImplTy::const_iterator const_iterator;
unsigned size() const { return Impl.size(); }
bool empty() const { return Impl.empty(); }
iterator begin() { return Impl.begin(); }
iterator end() { return Impl.end(); }
@ -616,11 +618,19 @@ public:
/// mappings removed.
StateTy RemoveDeadBindings(Stmt* S, StateTy M);
StateTy SetValue(StateTy St, Stmt* S, const ExprValue& V);
StateTy SetValue(StateTy St, Stmt* S, const ExprValue& V);
StateTy SetValue(StateTy St, const Stmt* S, const ExprValue& V) {
return SetValue(St, const_cast<Stmt*>(S), V);
}
StateTy SetValue(StateTy St, const LValue& LV, const ExprValue& V);
ExprValue GetValue(const StateTy& St, Stmt* S);
ExprValue GetValue(const StateTy& St, Stmt* S);
inline ExprValue GetValue(const StateTy& St, const Stmt* S) {
return GetValue(St, const_cast<Stmt*>(S));
}
ExprValue GetValue(const StateTy& St, const LValue& LV);
LValue GetLValue(const StateTy& St, Stmt* S);
@ -637,7 +647,10 @@ public:
void VisitUnaryOperator(UnaryOperator* B, NodeTy* Pred, NodeSet& Dst);
/// VisitBinaryOperator - Transfer function logic for binary operators.
void VisitBinaryOperator(BinaryOperator* B, NodeTy* Pred, NodeSet& Dst);
void VisitBinaryOperator(BinaryOperator* B, NodeTy* Pred, NodeSet& Dst);
/// VisitDeclStmt - Transfer function logic for DeclStmts.
void VisitDeclStmt(DeclStmt* DS, NodeTy* Pred, NodeSet& Dst);
};
} // end anonymous namespace
@ -768,6 +781,7 @@ GRConstants::StateTy GRConstants::SetValue(StateTy St, const LValue& LV,
}
GRConstants::StateTy GRConstants::RemoveDeadBindings(Stmt* Loc, StateTy M) {
#if 0
// Note: in the code below, we can assign a new map to M since the
// iterators are iterating over the tree of the *original* map.
StateTy::iterator I = M.begin(), E = M.end();
@ -786,7 +800,7 @@ GRConstants::StateTy GRConstants::RemoveDeadBindings(Stmt* Loc, StateTy M) {
if (!Liveness->isLive(Loc, V))
M = StateMgr.Remove(M, I.getKey());
}
#endif
return M;
}
@ -820,7 +834,22 @@ void GRConstants::VisitCast(Expr* CastE, Expr* E, GRConstants::NodeTy* Pred,
const ExprValue& V = GetValue(St, E);
Nodify(Dst, CastE, N, SetValue(St, CastE, V.EvalCast(ValMgr, CastE)));
}
}
}
void GRConstants::VisitDeclStmt(DeclStmt* DS, GRConstants::NodeTy* Pred,
GRConstants::NodeSet& Dst) {
StateTy St = Pred->getState();
for (const ScopedDecl* D = DS->getDecl(); D; D = D->getNextDeclarator())
if (const VarDecl* VD = dyn_cast<VarDecl>(D))
St = SetValue(St, LValueDecl(VD), GetValue(St, VD->getInit()));
Nodify(Dst, DS, Pred, St);
if (Dst.empty())
Dst.Add(Pred);
}
void GRConstants::VisitUnaryOperator(UnaryOperator* U,
GRConstants::NodeTy* Pred,
@ -1027,6 +1056,10 @@ void GRConstants::Visit(Stmt* S, GRConstants::NodeTy* Pred,
break;
}
case Stmt::DeclStmtClass:
VisitDeclStmt(cast<DeclStmt>(S), Pred, Dst);
break;
default:
Dst.Add(Pred); // No-op. Simply propagate the current state unchanged.
break;