gimbal_string_ref.hpp

#ifndef GIMBAL_STRING_REF_HPP
#define GIMBAL_STRING_REF_HPP
 
#include <cstdint>
 
#include "gimbal_string_ref.h"
#include "gimbal_string_view.hpp"
 
namespace gbl {
 
class StringRef {
private:
    GblStringRef* pRef_ = nullptr;
 
public:
 
    StringRef() noexcept = default;
 
    StringRef(const char* pStr, std::size_t len=0) noexcept:
        pRef_(GblStringRef_create(pStr, len)) { }
 
    StringRef(const StringRef& rhs) noexcept:
        pRef_(GblStringRef_ref(rhs.pRef_)) { }
 
    StringRef(StringRef&& rhs) noexcept:
        pRef_(rhs.pRef_)
    {
        rhs.pRef_ = nullptr;
    }
 
    StringRef fromGblRef(GblStringRef* pRef) noexcept {
        StringRef ref;
        ref.pRef_ = pRef;
        return ref;
    }
 
    GblStringRef* toGblRef() noexcept {
        GblStringRef* pTemp = pRef_;
        pRef_ = nullptr;
        return pTemp;
    }
 
    ~StringRef() noexcept {
        GblStringRef_unref(pRef_);
    }
 
    StringRef& operator=(const char* pCStr) noexcept {
        GblStringRef_unref(pRef_);
        GblStringRef_create(pCStr);
        return *this;
    }
 
    StringRef& operator=(const StringRef& rhs) noexcept {
        GblStringRef_unref(pRef_);
        GblStringRef_ref(rhs.pRef_);
        return *this;
    }
 
    StringRef& operator=(StringRef&& rhs) noexcept {
        GblStringRef_unref(pRef_);
        pRef_ = rhs.pRef_;
        rhs.pRef_ = nullptr;
        return *this;
    }
 
    operator const char*() const noexcept {
        return pRef_;
    }
 
    char operator[](std::size_t index) const {
        if(index >= length())
            throw std::out_of_range {
                "Attempt to index StringRef out-of-range!"
            };
 
        return pRef_[index];
    }
 
    StringView view(std::size_t offset=0, std::size_t len=0) const {
        if(!len)
            len = length() - offset;
 
        if(offset + len > length())
            throw std::out_of_range {
                "Attempt to create out-of-range StringView from StringRef"
            };
 
 
        return GblStringView {
            .pData = pRef_ + offset,
            .nullTerminated = (offset + len == length()),
            .length = len
        };
    }
 
    std::size_t refCount() const noexcept {
        return GblStringRef_refCount(pRef_);
    }
 
    std::size_t length() const noexcept {
        return GblStringRef_length(pRef_);
    }
 
    bool valid() const noexcept {
        return GblStringRef_valid(pRef_);
    }
 
    bool empty() const noexcept {
        return GblStringRef_empty(pRef_);
    }
 
    bool blank() const noexcept {
        return GblStringRef_blank(pRef_);
    }
 
    // comparisons
    // ostream
    // hash
    // swap
    // better creation? snprintf()-y stuff?
};
 
}
 
#endif // GIMBAL_STRING_REF_HPP