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