clangversionabstraction.h

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// this file is based on clangversionabstraction.h from https://github.com/woboq/moc-ng
 
#ifndef REFLECTIVE_RAPIDJSON_CLANG_VERSION_ABSTRACTION_H
#define REFLECTIVE_RAPIDJSON_CLANG_VERSION_ABSTRACTION_H
 
#include <clang/Basic/SourceLocation.h>
#include <clang/Basic/Version.h>
 
#include <memory>
 
namespace ReflectiveRapidJSON {

template <typename T> struct MaybeUnique {
    T *val;
    operator T *()
    {
        return val;
    }
    template <typename X> operator std::unique_ptr<X>() &&
    {
        return std::unique_ptr<X>(val);
    }
};
template <typename T> MaybeUnique<T> maybe_unique(T *val)
{
    return { val };
}
template <typename T> MaybeUnique<T> maybe_unique(std::unique_ptr<T> val)
{
    return { val.release() };
}

 
#if CLANG_VERSION_MAJOR == 3 && CLANG_VERSION_MINOR <= 5
#define REFLECTIVE_RAPIDJSON_MAYBE_UNIQUE(t) t *
#else
#define REFLECTIVE_RAPIDJSON_MAYBE_UNIQUE(t) std::unique_ptr<t>
#endif

template <typename T> bool startsStrRefWith(T stringRef1, T stringRef2)
{
#if CLANG_VERSION_MAJOR >= 16
    return stringRef1.starts_with(stringRef2);
#else
    return stringRef1.startswith(stringRef2);
#endif
}
 
} // namespace ReflectiveRapidJSON
 
#endif // REFLECTIVE_RAPIDJSON_CLANG_VERSION_ABSTRACTION_H