yaml-cpp/src/contrib/graphbuilderadapter.cpp
2014-03-22 22:46:04 -05:00

93 lines
2.5 KiB
C++

#include "graphbuilderadapter.h"
#include "yaml-cpp/contrib/graphbuilder.h"
namespace YAML {
struct Mark;
int GraphBuilderAdapter::ContainerFrame::sequenceMarker;
void GraphBuilderAdapter::OnNull(const Mark &mark, anchor_t anchor) {
void *pParent = GetCurrentParent();
void *pNode = m_builder.NewNull(mark, 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);
}
}
}