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#ifndef COLLECTIONSTACK_H_62B23520_7C8E_11DE_8A39_0800200C9A66 
#define COLLECTIONSTACK_H_62B23520_7C8E_11DE_8A39_0800200C9A66 
 
#if defined(_MSC_VER) ||                                            \ 
    (defined(__GNUC__) && (__GNUC__ == 3 && __GNUC_MINOR__ >= 4) || \ 
     (__GNUC__ >= 4))  // GCC supports "pragma once" correctly since 3.4 
#pragma once 
#endif 
 
#include <stack> 
#include <cassert> 
 
namespace YAML { 
struct CollectionType { 
  enum value { NoCollection, BlockMap, BlockSeq, FlowMap, FlowSeq, CompactMap }; 
}; 
 
class CollectionStack { 
 public: 
  CollectionType::value GetCurCollectionType() const { 
    if (collectionStack.empty()) 
      return CollectionType::NoCollection; 
    return collectionStack.top(); 
  } 
 
  void PushCollectionType(CollectionType::value type) { 
    collectionStack.push(type); 
  } 
  void PopCollectionType(CollectionType::value type) { 
    (void)type;
    assert(type == GetCurCollectionType()); 
    collectionStack.pop(); 
  } 
 
 private: 
  std::stack<CollectionType::value> collectionStack; 
}; 
} 
 
#endif  // COLLECTIONSTACK_H_62B23520_7C8E_11DE_8A39_0800200C9A66