qswiki/database/hdr/sqlite_modern_cpp/errors.h

61 行
2.4 KiB
C++

#pragma once
#include <string>
#include <stdexcept>
#include <sqlite3.h>
namespace sqlite {
class sqlite_exception: public std::runtime_error {
public:
sqlite_exception(const char* msg, std::string sql, int code = -1): runtime_error(msg), code(code), sql(sql) {}
sqlite_exception(int code, std::string sql): runtime_error(sqlite3_errstr(code)), code(code), sql(sql) {}
int get_code() const {return code & 0xFF;}
int get_extended_code() const {return code;}
std::string get_sql() const {return sql;}
private:
int code;
std::string sql;
};
namespace errors {
//One more or less trivial derived error class for each SQLITE error.
//Note the following are not errors so have no classes:
//SQLITE_OK, SQLITE_NOTICE, SQLITE_WARNING, SQLITE_ROW, SQLITE_DONE
//
//Note these names are exact matches to the names of the SQLITE error codes.
#define SQLITE_MODERN_CPP_ERROR_CODE(NAME,name,derived) \
class name: public sqlite_exception { using sqlite_exception::sqlite_exception; };\
derived
#define SQLITE_MODERN_CPP_ERROR_CODE_EXTENDED(BASE,SUB,base,sub) \
class base ## _ ## sub: public base { using base::base; };
#include "lists/error_codes.h"
#undef SQLITE_MODERN_CPP_ERROR_CODE_EXTENDED
#undef SQLITE_MODERN_CPP_ERROR_CODE
//Some additional errors are here for the C++ interface
class more_rows: public sqlite_exception { using sqlite_exception::sqlite_exception; };
class no_rows: public sqlite_exception { using sqlite_exception::sqlite_exception; };
class more_statements: public sqlite_exception { using sqlite_exception::sqlite_exception; }; // Prepared statements can only contain one statement
class invalid_utf16: public sqlite_exception { using sqlite_exception::sqlite_exception; };
static void throw_sqlite_error(const int& error_code, const std::string &sql = "") {
switch(error_code & 0xFF) {
#define SQLITE_MODERN_CPP_ERROR_CODE(NAME,name,derived) \
case SQLITE_ ## NAME: switch(error_code) { \
derived \
default: throw name(error_code, sql); \
}
#define SQLITE_MODERN_CPP_ERROR_CODE_EXTENDED(BASE,SUB,base,sub) \
case SQLITE_ ## BASE ## _ ## SUB: throw base ## _ ## sub(error_code, sql);
#include "lists/error_codes.h"
#undef SQLITE_MODERN_CPP_ERROR_CODE_EXTENDED
#undef SQLITE_MODERN_CPP_ERROR_CODE
default: throw sqlite_exception(error_code, sql);
}
}
}
namespace exceptions = errors;
}