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-rw-r--r--external_libs/yaml-cpp/src/emitfromevents.cpp105
1 files changed, 105 insertions, 0 deletions
diff --git a/external_libs/yaml-cpp/src/emitfromevents.cpp b/external_libs/yaml-cpp/src/emitfromevents.cpp
new file mode 100644
index 00000000..49fc10b2
--- /dev/null
+++ b/external_libs/yaml-cpp/src/emitfromevents.cpp
@@ -0,0 +1,105 @@
+#include "yaml-cpp/emitfromevents.h"
+#include "yaml-cpp/emitter.h"
+#include "yaml-cpp/null.h"
+#include <cassert>
+#include <sstream>
+
+namespace {
+ std::string ToString(YAML::anchor_t anchor) {
+ std::stringstream stream;
+ stream << anchor;
+ return stream.str();
+ }
+}
+
+namespace YAML
+{
+ EmitFromEvents::EmitFromEvents(Emitter& emitter): m_emitter(emitter)
+ {
+ }
+
+ void EmitFromEvents::OnDocumentStart(const Mark&)
+ {
+ }
+
+ void EmitFromEvents::OnDocumentEnd()
+ {
+ }
+
+ void EmitFromEvents::OnNull(const Mark&, anchor_t anchor)
+ {
+ BeginNode();
+ EmitProps("", anchor);
+ m_emitter << Null;
+ }
+
+ void EmitFromEvents::OnAlias(const Mark&, anchor_t anchor)
+ {
+ BeginNode();
+ m_emitter << Alias(ToString(anchor));
+ }
+
+ void EmitFromEvents::OnScalar(const Mark&, const std::string& tag, anchor_t anchor, const std::string& value)
+ {
+ BeginNode();
+ EmitProps(tag, anchor);
+ m_emitter << value;
+ }
+
+ void EmitFromEvents::OnSequenceStart(const Mark&, const std::string& tag, anchor_t anchor)
+ {
+ BeginNode();
+ EmitProps(tag, anchor);
+ m_emitter << BeginSeq;
+ m_stateStack.push(State::WaitingForSequenceEntry);
+ }
+
+ void EmitFromEvents::OnSequenceEnd()
+ {
+ m_emitter << EndSeq;
+ assert(m_stateStack.top() == State::WaitingForSequenceEntry);
+ m_stateStack.pop();
+ }
+
+ void EmitFromEvents::OnMapStart(const Mark&, const std::string& tag, anchor_t anchor)
+ {
+ BeginNode();
+ EmitProps(tag, anchor);
+ m_emitter << BeginMap;
+ m_stateStack.push(State::WaitingForKey);
+ }
+
+ void EmitFromEvents::OnMapEnd()
+ {
+ m_emitter << EndMap;
+ assert(m_stateStack.top() == State::WaitingForKey);
+ m_stateStack.pop();
+ }
+
+ void EmitFromEvents::BeginNode()
+ {
+ if(m_stateStack.empty())
+ return;
+
+ switch(m_stateStack.top()) {
+ case State::WaitingForKey:
+ m_emitter << Key;
+ m_stateStack.top() = State::WaitingForValue;
+ break;
+ case State::WaitingForValue:
+ m_emitter << Value;
+ m_stateStack.top() = State::WaitingForKey;
+ break;
+ default:
+ break;
+ }
+ }
+
+ void EmitFromEvents::EmitProps(const std::string& tag, anchor_t anchor)
+ {
+ if(!tag.empty() && tag != "?")
+ m_emitter << VerbatimTag(tag);
+ if(anchor)
+ m_emitter << Anchor(ToString(anchor));
+ }
+}