6bbc603b22
Support for YAML Merge keys ( <<: [*dict1, *dict2] ) is added. The merge key is a specific scalar with value << (and tag !!merge) that implies that during node construction, the map (or sequence of maps) are merged into the current map. The priority rules are that each key from maps within the value associated with << are added iff the key is not yet present in the current map (and first map gets higher priority). Test cases have been added accordingly.
76 lines
2.2 KiB
C++
76 lines
2.2 KiB
C++
#ifndef NODE_NODEBUILDER_H_62B23520_7C8E_11DE_8A39_0800200C9A66
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#define NODE_NODEBUILDER_H_62B23520_7C8E_11DE_8A39_0800200C9A66
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#if defined(_MSC_VER) || \
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(defined(__GNUC__) && (__GNUC__ == 3 && __GNUC_MINOR__ >= 4) || \
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(__GNUC__ >= 4)) // GCC supports "pragma once" correctly since 3.4
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#pragma once
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#endif
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#include <vector>
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#include "yaml-cpp/anchor.h"
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#include "yaml-cpp/emitterstyle.h"
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#include "yaml-cpp/eventhandler.h"
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#include "yaml-cpp/node/ptr.h"
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namespace YAML {
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namespace detail {
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class node;
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} // namespace detail
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struct Mark;
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} // namespace YAML
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namespace YAML {
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class Node;
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class NodeBuilder : public EventHandler {
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public:
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NodeBuilder();
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NodeBuilder(const NodeBuilder&) = delete;
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NodeBuilder(NodeBuilder&&) = delete;
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NodeBuilder& operator=(const NodeBuilder&) = delete;
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NodeBuilder& operator=(NodeBuilder&&) = delete;
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~NodeBuilder() override;
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Node Root();
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void OnDocumentStart(const Mark& mark) override;
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void OnDocumentEnd() override;
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void OnNull(const Mark& mark, anchor_t anchor) override;
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void OnAlias(const Mark& mark, anchor_t anchor) override;
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void OnScalar(const Mark& mark, const std::string& tag,
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anchor_t anchor, const std::string& value) override;
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void OnSequenceStart(const Mark& mark, const std::string& tag,
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anchor_t anchor, EmitterStyle::value style) override;
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void OnSequenceEnd() override;
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void OnMapStart(const Mark& mark, const std::string& tag,
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anchor_t anchor, EmitterStyle::value style) override;
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void OnMapEnd() override;
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private:
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detail::node& Push(const Mark& mark, anchor_t anchor);
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void Push(detail::node& node);
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void Pop();
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void RegisterAnchor(anchor_t anchor, detail::node& node);
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private:
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detail::shared_memory_holder m_pMemory;
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detail::node* m_pRoot;
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using Nodes = std::vector<detail::node *>;
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Nodes m_stack;
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Nodes m_anchors;
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using PushedKey = std::pair<detail::node*, bool>;
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std::vector<PushedKey> m_keys;
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Nodes m_mergeDicts;
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std::size_t m_mapDepth;
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};
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} // namespace YAML
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#endif // NODE_NODEBUILDER_H_62B23520_7C8E_11DE_8A39_0800200C9A66
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