Merged contrib folders from the graphbuilder-api branch, including the recursive search in CMakeLists.txt

src/contrib/graphbuilder.cpp

@@ -0,0 +1,16 @@
+#include "yaml-cpp/parser.h"
+#include "yaml-cpp/contrib/graphbuilder.h"
+#include "graphbuilderadapter.h"
+
+namespace YAML
+{
+  void *BuildGraphOfNextDocument(Parser& parser, GraphBuilderInterface& graphBuilder)
+  {
+    GraphBuilderAdapter eventHandler(graphBuilder);
+    if (parser.HandleNextDocument(eventHandler)) {
+      return eventHandler.RootNode();
+    } else {
+      return NULL;
+    }
+  }
+}

src/contrib/graphbuilderadapter.cpp

@@ -0,0 +1,96 @@
+#include "graphbuilderadapter.h"
+
+namespace YAML
+{
+  int GraphBuilderAdapter::ContainerFrame::sequenceMarker;
+  
+  void GraphBuilderAdapter::OnNull(const std::string& tag, anchor_t anchor)
+  {
+    void *pParent = GetCurrentParent();
+    void *pNode = m_builder.NewNull(tag, pParent);
+    RegisterAnchor(anchor, pNode);
+    
+    DispositionNode(pNode);
+  }
+  
+  void GraphBuilderAdapter::OnAlias(const Mark& mark, anchor_t anchor)
+  {
+    void *pReffedNode = m_anchors.Get(anchor);
+    DispositionNode(m_builder.AnchorReference(mark, pReffedNode));
+  }
+  
+  void GraphBuilderAdapter::OnScalar(const Mark& mark, const std::string& tag, anchor_t anchor, const std::string& value)
+  {
+    void *pParent = GetCurrentParent();
+    void *pNode = m_builder.NewScalar(mark, tag, pParent, value);
+    RegisterAnchor(anchor, pNode);
+    
+    DispositionNode(pNode);
+  }
+  
+  void GraphBuilderAdapter::OnSequenceStart(const Mark& mark, const std::string& tag, anchor_t anchor)
+  {
+    void *pNode = m_builder.NewSequence(mark, tag, GetCurrentParent());
+    m_containers.push(ContainerFrame(pNode));
+    RegisterAnchor(anchor, pNode);
+  }
+  
+  void GraphBuilderAdapter::OnSequenceEnd()
+  {
+    void *pSequence = m_containers.top().pContainer;
+    m_containers.pop();
+    
+    DispositionNode(pSequence);
+  }
+  
+  void GraphBuilderAdapter::OnMapStart(const Mark& mark, const std::string& tag, anchor_t anchor)
+  {
+    void *pNode = m_builder.NewMap(mark, tag, GetCurrentParent());
+    m_containers.push(ContainerFrame(pNode, m_pKeyNode));
+    m_pKeyNode = NULL;
+    RegisterAnchor(anchor, pNode);
+  }
+  
+  void GraphBuilderAdapter::OnMapEnd()
+  {
+    void *pMap = m_containers.top().pContainer;
+    m_pKeyNode = m_containers.top().pPrevKeyNode;
+    m_containers.pop();
+    DispositionNode(pMap);
+  }
+  
+  void *GraphBuilderAdapter::GetCurrentParent() const
+  {
+    if (m_containers.empty()) {
+      return NULL;
+    }
+    return m_containers.top().pContainer;
+  }
+  
+  void GraphBuilderAdapter::RegisterAnchor(anchor_t anchor, void *pNode)
+  {
+    if (anchor) {
+      m_anchors.Register(anchor, pNode);
+    }
+  }
+  
+  void GraphBuilderAdapter::DispositionNode(void *pNode)
+  {
+    if (m_containers.empty()) {
+      m_pRootNode = pNode;
+      return;
+    }
+    
+    void *pContainer = m_containers.top().pContainer;
+    if (m_containers.top().isMap()) {
+      if (m_pKeyNode) {
+        m_builder.AssignInMap(pContainer, m_pKeyNode, pNode);
+        m_pKeyNode = NULL;
+      } else {
+        m_pKeyNode = pNode;
+      }
+    } else {
+      m_builder.AppendToSequence(pContainer, pNode);
+    }
+  }
+}

src/contrib/graphbuilderadapter.h

@@ -0,0 +1,68 @@
+#ifndef GRAPHBUILDERADAPTER_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+#define GRAPHBUILDERADAPTER_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+
+#include <map>
+#include <stack>
+#include "yaml-cpp/eventhandler.h"
+#include "yaml-cpp/contrib/anchordict.h"
+#include "yaml-cpp/contrib/graphbuilder.h"
+
+namespace YAML
+{
+  class GraphBuilderAdapter : public EventHandler
+  {
+  public:
+    GraphBuilderAdapter(GraphBuilderInterface& builder)
+    : m_builder(builder), m_pRootNode(NULL), m_pKeyNode(NULL)
+    {
+    }
+    
+    virtual void OnDocumentStart(const Mark& mark) {(void)mark;}
+    virtual void OnDocumentEnd() {}
+    
+    virtual void OnNull(const std::string& tag, anchor_t anchor);
+    virtual void OnAlias(const Mark& mark, anchor_t anchor);
+    virtual void OnScalar(const Mark& mark, const std::string& tag, anchor_t anchor, const std::string& value);
+    
+    virtual void OnSequenceStart(const Mark& mark, const std::string& tag, anchor_t anchor);
+    virtual void OnSequenceEnd();
+    
+    virtual void OnMapStart(const Mark& mark, const std::string& tag, anchor_t anchor);
+    virtual void OnMapEnd();
+    
+    void *RootNode() const {return m_pRootNode;}
+  
+  private:
+    struct ContainerFrame
+    {
+      ContainerFrame(void *pSequence)
+      : pContainer(pSequence), pPrevKeyNode(&sequenceMarker)
+      {}
+      ContainerFrame(void *pMap, void* pPrevKeyNode)
+      : pContainer(pMap), pPrevKeyNode(pPrevKeyNode)
+      {}
+      
+      void *pContainer;
+      void *pPrevKeyNode;
+      
+      bool isMap() const {return pPrevKeyNode != &sequenceMarker;}
+    
+    private:
+      static int sequenceMarker;
+    };
+    typedef std::stack<ContainerFrame> ContainerStack;
+    typedef AnchorDict<void*> AnchorMap;
+    
+    GraphBuilderInterface& m_builder;
+    ContainerStack m_containers;
+    AnchorMap m_anchors;
+    void *m_pRootNode;
+    void *m_pKeyNode;
+    
+    void *GetCurrentParent() const;
+    void RegisterAnchor(anchor_t anchor, void *pNode);
+    void DispositionNode(void *pNode);
+  };
+}
+
+#endif // GRAPHBUILDERADAPTER_H_62B23520_7C8E_11DE_8A39_0800200C9A66