author | František Kučera <franta-hg@frantovo.cz> |
Sat, 04 Dec 2021 21:14:51 +0100 | |
branch | v_0 |
changeset 53 | 2dcf2ef638a6 |
parent 42 | 3442e0d6caec |
permissions | -rw-r--r-- |
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license: GNU GPLv3+
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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 <sstream> |
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#include <functional> |
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#include "DataTypeReaderBase.h" |
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namespace relpipe { |
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namespace reader { |
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template<typename T> class DataTypeReader : public DataTypeReaderBase { |
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public: |
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DataTypeReader(const TypeId typeId, const string_t typeCode) : DataTypeReaderBase(typeId, typeCode) { |
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} |
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virtual ~DataTypeReader() { |
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}; |
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virtual T readValue(std::istream& input) = 0; |
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virtual string_t readString(std::istream &input) { |
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return toString(readValue(input)); |
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} |
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virtual void read(std::istream &input, std::function<void(const void *, const std::type_info&) > handler) override { |
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T value = readValue(input); |
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handler(&value, typeid (T)); |
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} |
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virtual void read(std::istream &input, std::function<void(const string_t&, const void *, const std::type_info&) > handler) override { |
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T value = readValue(input); |
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handler(toString(value), &value, typeid (T)); |
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} |
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virtual string_t toString(const T& value) = 0; |
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}; |
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} |
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} |