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Add default index functor (an identity functor). You could use a

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vector directly to get the same functionality but using a DenseMap
makes the code more readable IMO.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16052 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Alkis Evlogimenos 2004-08-26 03:37:28 +00:00
parent 07b52b367f
commit 5501e568b3
3 changed files with 54 additions and 36 deletions
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14
include/Support/DenseMap.h
View File

@ -24,15 +24,21 @@
namespace llvm { namespace llvm {
template <typename T, typename ToIndexT> struct IdentityFunctor : std::unary_function<unsigned, unsigned> {
class DenseMap { unsigned operator()(unsigned Index) const {
return Index;
}
};
template <typename T, typename ToIndexT = IdentityFunctor>
class DenseMap {
typedef typename ToIndexT::argument_type IndexT; typedef typename ToIndexT::argument_type IndexT;
typedef std::vector<T> StorageT; typedef std::vector<T> StorageT;
StorageT storage_; StorageT storage_;
T nullVal_; T nullVal_;
ToIndexT toIndex_; ToIndexT toIndex_;
public: public:
DenseMap() : nullVal_(T()) { } DenseMap() : nullVal_(T()) { }
explicit DenseMap(const T& val) : nullVal_(val) { } explicit DenseMap(const T& val) : nullVal_(val) { }
@ -56,7 +62,7 @@ public:
if (NewSize > storage_.size()) if (NewSize > storage_.size())
storage_.resize(NewSize, nullVal_); storage_.resize(NewSize, nullVal_);
} }
}; };
} // End llvm namespace } // End llvm namespace

14
include/llvm/ADT/DenseMap.h
View File

@ -24,15 +24,21 @@
namespace llvm { namespace llvm {
template <typename T, typename ToIndexT> struct IdentityFunctor : std::unary_function<unsigned, unsigned> {
class DenseMap { unsigned operator()(unsigned Index) const {
return Index;
}
};
template <typename T, typename ToIndexT = IdentityFunctor>
class DenseMap {
typedef typename ToIndexT::argument_type IndexT; typedef typename ToIndexT::argument_type IndexT;
typedef std::vector<T> StorageT; typedef std::vector<T> StorageT;
StorageT storage_; StorageT storage_;
T nullVal_; T nullVal_;
ToIndexT toIndex_; ToIndexT toIndex_;
public: public:
DenseMap() : nullVal_(T()) { } DenseMap() : nullVal_(T()) { }
explicit DenseMap(const T& val) : nullVal_(val) { } explicit DenseMap(const T& val) : nullVal_(val) { }
@ -56,7 +62,7 @@ public:
if (NewSize > storage_.size()) if (NewSize > storage_.size())
storage_.resize(NewSize, nullVal_); storage_.resize(NewSize, nullVal_);
} }
}; };
} // End llvm namespace } // End llvm namespace

14
include/llvm/ADT/IndexedMap.h
View File

@ -24,15 +24,21 @@
namespace llvm { namespace llvm {
template <typename T, typename ToIndexT> struct IdentityFunctor : std::unary_function<unsigned, unsigned> {
class DenseMap { unsigned operator()(unsigned Index) const {
return Index;
}
};
template <typename T, typename ToIndexT = IdentityFunctor>
class DenseMap {
typedef typename ToIndexT::argument_type IndexT; typedef typename ToIndexT::argument_type IndexT;
typedef std::vector<T> StorageT; typedef std::vector<T> StorageT;
StorageT storage_; StorageT storage_;
T nullVal_; T nullVal_;
ToIndexT toIndex_; ToIndexT toIndex_;
public: public:
DenseMap() : nullVal_(T()) { } DenseMap() : nullVal_(T()) { }
explicit DenseMap(const T& val) : nullVal_(val) { } explicit DenseMap(const T& val) : nullVal_(val) { }
@ -56,7 +62,7 @@ public:
if (NewSize > storage_.size()) if (NewSize > storage_.size())
storage_.resize(NewSize, nullVal_); storage_.resize(NewSize, nullVal_);
} }
}; };
} // End llvm namespace } // End llvm namespace