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#ifndef EMITTERSTATE_H_62B23520_7C8E_11DE_8A39_0800200C9A66
#define EMITTERSTATE_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 "setting.h"
#include "yaml-cpp/emitterdef.h"
#include "yaml-cpp/emittermanip.h"
#include <cassert>
#include <memory>
#include <stack>
#include <stdexcept>
#include <vector>
namespace YAML {
struct FmtScope {
enum value { Local, Global };
};
struct GroupType {
enum value { NoType, Seq, Map };
};
struct FlowType {
enum value { NoType, Flow, Block };
};
class EmitterState {
public:
EmitterState();
~EmitterState();
// basic state checking
bool good() const { return m_isGood; }
const std::string GetLastError() const { return m_lastError; }
void SetError(const std::string& error) {
m_isGood = false;
m_lastError = error;
}
// node handling
void SetAnchor();
void SetTag();
void SetNonContent();
void SetLongKey();
void ForceFlow();
void StartedDoc();
void EndedDoc();
void StartedScalar();
void StartedGroup(GroupType::value type);
void EndedGroup(GroupType::value type);
EmitterNodeType::value NextGroupType(GroupType::value type) const;
EmitterNodeType::value CurGroupNodeType() const;
GroupType::value CurGroupType() const;
FlowType::value CurGroupFlowType() const;
std::size_t CurGroupIndent() const;
std::size_t CurGroupChildCount() const;
bool CurGroupLongKey() const;
std::size_t LastIndent() const;
std::size_t CurIndent() const { return m_curIndent; }
bool HasAnchor() const { return m_hasAnchor; }
bool HasTag() const { return m_hasTag; }
bool HasBegunNode() const {
return m_hasAnchor || m_hasTag || m_hasNonContent;
}
bool HasBegunContent() const { return m_hasAnchor || m_hasTag; }
void ClearModifiedSettings();
// formatters
void SetLocalValue(EMITTER_MANIP value);
bool SetOutputCharset(EMITTER_MANIP value, FmtScope::value scope);
EMITTER_MANIP GetOutputCharset() const { return m_charset.get(); }
bool SetStringFormat(EMITTER_MANIP value, FmtScope::value scope);
EMITTER_MANIP GetStringFormat() const { return m_strFmt.get(); }
bool SetBoolFormat(EMITTER_MANIP value, FmtScope::value scope);
EMITTER_MANIP GetBoolFormat() const { return m_boolFmt.get(); }
bool SetBoolLengthFormat(EMITTER_MANIP value, FmtScope::value scope);
EMITTER_MANIP GetBoolLengthFormat() const { return m_boolLengthFmt.get(); }
bool SetBoolCaseFormat(EMITTER_MANIP value, FmtScope::value scope);
EMITTER_MANIP GetBoolCaseFormat() const { return m_boolCaseFmt.get(); }
bool SetIntFormat(EMITTER_MANIP value, FmtScope::value scope);
EMITTER_MANIP GetIntFormat() const { return m_intFmt.get(); }
bool SetIndent(std::size_t value, FmtScope::value scope);
std::size_t GetIndent() const { return m_indent.get(); }
bool SetPreCommentIndent(std::size_t value, FmtScope::value scope);
std::size_t GetPreCommentIndent() const { return m_preCommentIndent.get(); }
bool SetPostCommentIndent(std::size_t value, FmtScope::value scope);
std::size_t GetPostCommentIndent() const { return m_postCommentIndent.get(); }
bool SetFlowType(GroupType::value groupType, EMITTER_MANIP value,
FmtScope::value scope);
EMITTER_MANIP GetFlowType(GroupType::value groupType) const;
bool SetMapKeyFormat(EMITTER_MANIP value, FmtScope::value scope);
EMITTER_MANIP GetMapKeyFormat() const { return m_mapKeyFmt.get(); }
bool SetFloatPrecision(std::size_t value, FmtScope::value scope);
std::size_t GetFloatPrecision() const { return m_floatPrecision.get(); }
bool SetDoublePrecision(std::size_t value, FmtScope::value scope);
std::size_t GetDoublePrecision() const { return m_doublePrecision.get(); }
private:
template <typename T>
void _Set(Setting<T>& fmt, T value, FmtScope::value scope);
void StartedNode();
private:
// basic state ok?
bool m_isGood;
std::string m_lastError;
// other state
Setting<EMITTER_MANIP> m_charset;
Setting<EMITTER_MANIP> m_strFmt;
Setting<EMITTER_MANIP> m_boolFmt;
Setting<EMITTER_MANIP> m_boolLengthFmt;
Setting<EMITTER_MANIP> m_boolCaseFmt;
Setting<EMITTER_MANIP> m_intFmt;
Setting<std::size_t> m_indent;
Setting<std::size_t> m_preCommentIndent, m_postCommentIndent;
Setting<EMITTER_MANIP> m_seqFmt;
Setting<EMITTER_MANIP> m_mapFmt;
Setting<EMITTER_MANIP> m_mapKeyFmt;
Setting<std::size_t> m_floatPrecision;
Setting<std::size_t> m_doublePrecision;
SettingChanges m_modifiedSettings;
SettingChanges m_globalModifiedSettings;
struct Group {
explicit Group(GroupType::value type_)
: type(type_), indent(0), childCount(0), longKey(false) {}
GroupType::value type;
FlowType::value flowType;
std::size_t indent;
std::size_t childCount;
bool longKey;
SettingChanges modifiedSettings;
EmitterNodeType::value NodeType() const {
if (type == GroupType::Seq) {
if (flowType == FlowType::Flow)
return EmitterNodeType::FlowSeq;
else
return EmitterNodeType::BlockSeq;
} else {
if (flowType == FlowType::Flow)
return EmitterNodeType::FlowMap;
else
return EmitterNodeType::BlockMap;
}
// can't get here
assert(false);
return EmitterNodeType::NoType;
}
};
std::vector<std::unique_ptr<Group>> m_groups;
std::size_t m_curIndent;
bool m_hasAnchor;
bool m_hasTag;
bool m_hasNonContent;
std::size_t m_docCount;
};
template <typename T>
void EmitterState::_Set(Setting<T>& fmt, T value, FmtScope::value scope) {
switch (scope) {
case FmtScope::Local:
m_modifiedSettings.push(fmt.set(value));
break;
case FmtScope::Global:
fmt.set(value);
m_globalModifiedSettings.push(
fmt.set(value)); // this pushes an identity set, so when we restore,
// it restores to the value here, and not the previous one
break;
default:
assert(false);
}
}
}
#endif // EMITTERSTATE_H_62B23520_7C8E_11DE_8A39_0800200C9A66
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