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cmDeleteAll: Generalize deletion specialization for map types.

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Assume that a container whose value_type is a std::pair should have
its second member deleted.
This commit is contained in:
Stephen Kelly
2015-01-04 15:16:56 +01:00
parent f8c416f00c
commit 4dc0c488f9
1 changed files with 17 additions and 4 deletions
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21
Source/cmStandardIncludes.h
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@@ -239,7 +239,20 @@ private:
namespace ContainerAlgorithms { namespace ContainerAlgorithms {
template<typename Container> template<typename T>
struct cmIsPair
{
enum { value = false };
};
template<typename K, typename V>
struct cmIsPair<std::pair<K, V> >
{
enum { value = true };
};
template<typename Container,
bool valueTypeIsPair = cmIsPair<typename Container::value_type>::value>
struct DefaultDeleter struct DefaultDeleter
{ {
void operator()(typename Container::value_type value) { void operator()(typename Container::value_type value) {
@@ -247,10 +260,10 @@ struct DefaultDeleter
} }
}; };
template<typename K, typename V> template<typename Container>
struct DefaultDeleter<std::map<K, V> > struct DefaultDeleter<Container, /* valueTypeIsPair = */ true>
{ {
void operator()(typename std::map<K, V>::value_type value) { void operator()(typename Container::value_type value) {
delete value.second; delete value.second;
} }
}; };