/**
* Relational pipes (library)
* Copyright © 2018 František Kučera (Frantovo.cz, GlobalCode.info)
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the:
* - GNU Lesser General Public License as published by the Free Software Foundation;
* version 3 of the License or (at your option)
* - GNU General Public License as published by the Free Software Foundation;
* version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
#include <string>
#include <iostream>
#include <cassert>
#include <limits>
#include <relpipe/protocol/constants.h>
#include "../DataTypeWriter.h"
namespace relpipe {
namespace writer {
namespace types {
using namespace relpipe::protocol;
using namespace relpipe::writer;
/**
* Signed variable-length integer.
* LEB128
*/
class IntegerDataTypeWriter : public DataTypeWriter<integer_t> {
public:
IntegerDataTypeWriter() : DataTypeWriter<integer_t>(TypeId::INTEGER, DATA_TYPE_CODE_INTEGER) {
}
void writeValue(std::ostream &output, const integer_t &value) override {
integer_t v = value;
bool more;
do {
octet_t octet = v & 0x7F;
v >>= 7;
more = !(((v == 0) && ((octet & 0x40) == 0)) || ((v == -1) && ((octet & 0x40) != 0)));
if (more) octet |= 0x80; // more bytes follow
output << char(octet);
} while (more);
}
integer_t toValue(const string_t &stringValue) override {
// throws „terminate called after throwing an instance of 'std::invalid_argument'“ SIGABRT, core dumped on invalid number
return stol(stringValue);
}
};
}
}
}