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Implement VariantRefBase with a CRTP

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This commit is contained in:
Benoit Blanchon
2022-11-26 18:34:25 +01:00
parent 21db92af47
commit 0f85a55cac
15 changed files with 153 additions and 199 deletions
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42
src/ArduinoJson/Variant/VariantRefBase.hpp
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@@ -15,21 +15,16 @@ namespace ARDUINOJSON_NAMESPACE {
class VariantRef;
template <typename>
class ElementDataSource;
class ElementProxy;
template <typename, typename>
class MemberDataSource;
class MemberProxy;
template <typename>
class VariantProxy;
template <typename TDataSource>
template <typename TDerived>
class VariantRefBase : public VariantTag {
friend class VariantAttorney;
public:
explicit FORCE_INLINE VariantRefBase(TDataSource source) : _source(source) {}
FORCE_INLINE void clear() const {
variantSetNull(getData());
}
@@ -206,8 +201,7 @@ class VariantRefBase : public VariantTag {
FORCE_INLINE ArrayRef createNestedArray() const;
FORCE_INLINE ObjectRef createNestedObject() const;
FORCE_INLINE VariantProxy<ElementDataSource<VariantRefBase> > operator[](
size_t index) const;
FORCE_INLINE ElementProxy<TDerived> operator[](size_t index) const;
template <typename TString>
FORCE_INLINE typename enable_if<IsString<TString>::value, bool>::type
@@ -218,15 +212,13 @@ class VariantRefBase : public VariantTag {
containsKey(TChar* key) const;
template <typename TString>
FORCE_INLINE typename enable_if<
IsString<TString>::value,
VariantProxy<MemberDataSource<VariantRefBase, TString> > >::type
FORCE_INLINE typename enable_if<IsString<TString>::value,
MemberProxy<TDerived, TString> >::type
operator[](const TString& key) const;
template <typename TChar>
FORCE_INLINE typename enable_if<
IsString<TChar*>::value,
VariantProxy<MemberDataSource<VariantRefBase, TChar*> > >::type
FORCE_INLINE typename enable_if<IsString<TChar*>::value,
MemberProxy<TDerived, TChar*> >::type
operator[](TChar* key) const;
template <typename TString>
@@ -241,17 +233,25 @@ class VariantRefBase : public VariantTag {
template <typename TChar>
ObjectRef createNestedObject(TChar* key) const;
protected:
private:
TDerived& derived() {
return static_cast<TDerived&>(*this);
}
const TDerived& derived() const {
return static_cast<const TDerived&>(*this);
}
FORCE_INLINE MemoryPool* getPool() const {
return _source.getPool();
return VariantAttorney::getPool(derived());
}
FORCE_INLINE VariantData* getData() const {
return _source.getData();
return VariantAttorney::getData(derived());
}
FORCE_INLINE VariantData* getOrCreateData() const {
return _source.getOrCreateData();
return VariantAttorney::getOrCreateData(derived());
}
private:
@@ -262,8 +262,6 @@ class VariantRefBase : public VariantTag {
}
FORCE_INLINE VariantRef getOrCreateVariant() const;
TDataSource _source;
};
} // namespace ARDUINOJSON_NAMESPACE