Dictionary.h

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#ifndef SCSL_DICTIONARY_H
#define SCSL_DICTIONARY_H
 
 
#include <cstdint>
 
#include "Arena.h"
#include "TLV.h"
 
 
static constexpr uint8_t    DICTIONARY_TAG_KEY = 1;
static constexpr uint8_t    DICTIONARY_TAG_VAL = 2;
 
 
namespace scsl {
 
 
class Dictionary {
public:
    Dictionary(Arena &arena) :
        arena(arena),
        kTag(DICTIONARY_TAG_KEY),
        vTag(DICTIONARY_TAG_VAL)
    {};
 
    Dictionary(Arena &arena, uint8_t kt, uint8_t vt) :
        arena(arena),
        kTag(kt),
        vTag(vt)
    {};
 
    bool Lookup(const char *key, uint8_t klen, TLV::Record &res);
 
    int Set(const char *key, uint8_t klen, const char *val,
        uint8_t vlen);
 
    bool Contains(const char *key, uint8_t klen);
 
    bool Delete(const char *key, uint8_t klen);
 
 
    int DumpToFile(const char *path);
 
    friend std::ostream &operator<<(std::ostream &os,
        const Dictionary &dictionary);
private:
    uint8_t *seek(const char *key, uint8_t klen);
 
    bool spaceAvailable(uint8_t klen, uint8_t vlen);
 
    Arena &arena;
    uint8_t kTag;
    uint8_t vTag;
};
 
 
} // namespace scsl
 
#endif