app_utils.h

Go to the documentation of this file.

 
#ifndef GRAPHSCOPE_APP_UTILS_H_
#define GRAPHSCOPE_APP_UTILS_H_
 
#include <string>
#include <string_view>
#include <vector>
 
namespace gs {
 
class Encoder {
 public:
 Encoder(std::vector<char>& buf) : buf_(buf) {}
 
 void put_long(int64_t v);
 
 size_t skip_long();
 
 void put_long_at(size_t pos, int64_t v);
 
 void put_int(int v);
 
 size_t skip_int();
 
 void put_int_at(size_t pos, int v);
 
 void put_byte(uint8_t v);
 
 void put_bytes(const char* data, size_t size);
 
 size_t skip_byte();
 
 void put_byte_at(size_t pos, uint8_t v);
 
 void put_string(const std::string& v);
 
 void put_string_view(const std::string_view& v);
 
 void put_small_string(const std::string& v);
 
 void put_small_string_view(const std::string_view& v);
 
 void put_double(double v);
 
 void clear();
 
 private:
 std::vector<char>& buf_;
};
 
class Decoder {
 public:
 Decoder(const char* ptr, size_t size) : data_(ptr), end_(ptr + size) {}
 ~Decoder() {}
 
 int get_int();
 
 int64_t get_long();
 
 std::string_view get_string();
 
 std::string_view get_bytes();
 
 std::string_view get_small_string();
 
 uint8_t get_byte();
 
 double get_double();
 
 const char* data() const;
 
 size_t size() const;
 
 bool empty() const;
 
 void reset(const char* ptr, size_t size);
 
 private:
 const char* data_;
 const char* end_;
};
 
} // namespace gs
 
#endif // GRAPHSCOPE_APP_UTILS_H_