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Implemented operator[] specialization, but only const (should the sequence be mutable?)

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beder
2011-09-11 21:51:04 -05:00
parent e8210b476c
commit 4dd9f036d3
2 changed files with 34 additions and 11 deletions
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25
include/yaml-cpp/node/detail/impl.h
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@@ -8,29 +8,36 @@
#include "yaml-cpp/node/detail/node.h"
#include "yaml-cpp/node/detail/node_data.h"
#include <boost/type_traits.hpp>
namespace YAML
{
namespace detail
{
template<typename Key, typename Enable = void>
struct get_idx_helper {
static node *get(const Key& /* key */, shared_memory_holder /* pMemory */) {
struct get_idx {
static node *get(const std::vector<node *>& /* sequence */, const Key& /* key */, shared_memory_holder /* pMemory */) {
return 0;
}
};
template<typename Key>
struct get_idx_helper<Key, typename boost::enable_if<boost::is_integral<Key> >::type> {
static node *get(const Key& key, shared_memory_holder pMemory) {
struct get_idx<Key, typename boost::enable_if<boost::is_unsigned<Key> >::type> {
static node *get(const std::vector<node *>& sequence, const Key& key, shared_memory_holder pMemory) {
if(key < sequence.size())
return sequence[key];
return 0;
}
};
template<typename Key>
inline node *get_idx(const Key& key, shared_memory_holder pMemory) {
return get_idx_helper<Key>::get(key, pMemory);
}
struct get_idx<Key, typename boost::enable_if<boost::is_signed<Key> >::type> {
static node *get(const std::vector<node *>& sequence, const Key& key, shared_memory_holder pMemory) {
if(key < 0)
return 0;
return get_idx<std::size_t>::get(sequence, static_cast<std::size_t>(key), pMemory);
}
};
// indexing
template<typename Key>
@@ -43,7 +50,7 @@ namespace YAML
case NodeType::Null:
return pMemory->create_node();
case NodeType::Sequence:
if(node *pNode = get_idx(key, pMemory))
if(node *pNode = get_idx<Key>::get(m_sequence, key, pMemory))
return *pNode;
return pMemory->create_node();
case NodeType::Scalar:
@@ -67,7 +74,7 @@ namespace YAML
case NodeType::Undefined:
case NodeType::Null:
case NodeType::Sequence:
if(node *pNode = get_idx(key, pMemory))
if(node *pNode = get_idx<Key>::get(m_sequence, key, pMemory))
return *pNode;
convert_to_map(pMemory);