author | František Kučera <franta-hg@frantovo.cz> |
Sat, 24 Oct 2020 00:08:18 +0200 | |
branch | v_0 |
changeset 51 | 7e851aa01499 |
parent 45 | 27d5335cd924 |
child 54 | d9c68ac8929e |
permissions | -rw-r--r-- |
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/** |
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license of protocol, reader and writer: GNU LGPLv3+ or GNU GPLv2+
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* Relational pipes (library) |
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license: GNU GPLv3+
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* Copyright © 2018 František Kučera (Frantovo.cz, GlobalCode.info) |
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* |
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* This program is free software: you can redistribute it and/or modify |
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* it under the terms of the: |
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* - GNU Lesser General Public License as published by the Free Software Foundation; |
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* version 3 of the License or (at your option) |
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* - GNU General Public License as published by the Free Software Foundation; |
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* version 2 of the License. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program. If not, see <http://www.gnu.org/licenses/>. |
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*/ |
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#pragma once |
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#include <string> |
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#include <iostream> |
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#include <cassert> |
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#include <limits> |
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#include <relpipe/protocol/constants.h> |
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#include "../DataTypeWriter.h" |
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namespace relpipe { |
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namespace writer { |
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namespace types { |
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using namespace relpipe::protocol; |
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using namespace relpipe::writer; |
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/** |
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* Signed variable-length integer. |
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* LEB128 |
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*/ |
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class IntegerDataTypeWriter : public DataTypeWriter<integer_t> { |
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public: |
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IntegerDataTypeWriter() : DataTypeWriter<integer_t>(TypeId::INTEGER, DATA_TYPE_CODE_INTEGER) { |
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} |
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void writeValue(std::ostream &output, const integer_t &value) override { |
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integer_t v = value; |
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bool more; |
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do { |
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octet_t octet = v & 0x7F; |
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v >>= 7; |
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more = !(((v == 0) && ((octet & 0x40) == 0)) || ((v == -1) && ((octet & 0x40) != 0))); |
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if (more) octet |= 0x80; // more bytes follow |
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output << char(octet); |
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} while (more); |
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} |
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integer_t toValue(const string_t &stringValue) override { |
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// throws „terminate called after throwing an instance of 'std::invalid_argument'“ SIGABRT, core dumped on invalid number |
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return stol(stringValue); |
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} |
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}; |
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} |
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} |
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} |