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#pragma once
#ifndef MARISA_GRIMOIRE_TRIE_HEADER_H_
#define MARISA_GRIMOIRE_TRIE_HEADER_H_
#include "../io.h"
namespace marisa {
namespace grimoire {
namespace trie {
class Header {
public:
enum {
HEADER_SIZE = 16
};
Header() {}
void map(Mapper &mapper) {
const char *ptr;
mapper.map(&ptr, HEADER_SIZE);
MARISA_THROW_IF(!test_header(ptr), MARISA_FORMAT_ERROR);
}
void read(Reader &reader) {
char buf[HEADER_SIZE];
reader.read(buf, HEADER_SIZE);
MARISA_THROW_IF(!test_header(buf), MARISA_FORMAT_ERROR);
}
void write(Writer &writer) const {
writer.write(get_header(), HEADER_SIZE);
}
std::size_t io_size() const {
return HEADER_SIZE;
}
private:
static const char *get_header() {
static const char buf[HEADER_SIZE] = "We love Marisa.";
return buf;
}
static bool test_header(const char *ptr) {
for (std::size_t i = 0; i < HEADER_SIZE; ++i) {
if (ptr[i] != get_header()[i]) {
return false;
}
}
return true;
}
// Disallows copy and assignment.
Header(const Header &);
Header &operator=(const Header &);
};
} // namespace trie
} // namespace marisa
} // namespace grimoire
#endif // MARISA_GRIMOIRE_TRIE_HEADER_H_
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