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/*************************************************************************** |
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* * |
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* Copyright (C) 2017 Christian Schoenebeck * |
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* <cuse@users.sourceforge.net> * |
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* * |
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* This library is part of libgig. * |
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* * |
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* This library is free software; you can redistribute it and/or modify * |
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* it under the terms of the GNU General Public License as published by * |
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* the Free Software Foundation; either version 2 of the License, or * |
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* (at your option) any later version. * |
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* * |
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* This library 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 library; if not, write to the Free Software * |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, * |
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* MA 02111-1307 USA * |
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***************************************************************************/ |
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|
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#include "Serialization.h" |
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|
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#include <iostream> |
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#include <assert.h> |
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#include <string.h> // for memcpy() |
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#include <stdlib.h> // for atof() |
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#include <cxxabi.h> |
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|
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#include "helper.h" |
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|
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#define LIBGIG_EPOCH_TIME ((time_t)0) |
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|
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namespace Serialization { |
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|
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// *************** DataType *************** |
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// * |
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|
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static UID _createNullUID() { |
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const UID uid = { NULL, 0 }; |
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return uid; |
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} |
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|
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const UID NO_UID = _createNullUID(); |
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|
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bool UID::isValid() const { |
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return id != NULL && id != (void*)-1 && size; |
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} |
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|
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// *************** DataType *************** |
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// * |
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|
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DataType::DataType() { |
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m_size = 0; |
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m_isPointer = false; |
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} |
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|
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DataType::DataType(bool isPointer, int size, String baseType, String customType) { |
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m_size = size; |
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m_isPointer = isPointer; |
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m_baseTypeName = baseType; |
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m_customTypeName = customType; |
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} |
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|
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bool DataType::isValid() const { |
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return m_size; |
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} |
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|
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bool DataType::isPointer() const { |
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return m_isPointer; |
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} |
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|
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bool DataType::isClass() const { |
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return m_baseTypeName == "class"; |
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} |
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|
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bool DataType::isPrimitive() const { |
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return !isClass(); |
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} |
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|
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bool DataType::isInteger() const { |
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return m_baseTypeName.substr(0, 3) == "int" || |
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m_baseTypeName.substr(0, 4) == "uint"; |
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} |
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|
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bool DataType::isReal() const { |
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return m_baseTypeName.substr(0, 4) == "real"; |
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} |
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|
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bool DataType::isBool() const { |
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return m_baseTypeName == "bool"; |
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} |
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|
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bool DataType::isEnum() const { |
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return m_baseTypeName == "enum"; |
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} |
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|
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bool DataType::isSigned() const { |
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return m_baseTypeName.substr(0, 3) == "int" || |
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isReal(); |
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} |
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|
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bool DataType::operator==(const DataType& other) const { |
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return m_baseTypeName == other.m_baseTypeName && |
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m_customTypeName == other.m_customTypeName && |
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m_size == other.m_size && |
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m_isPointer == other.m_isPointer; |
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} |
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|
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bool DataType::operator!=(const DataType& other) const { |
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return !operator==(other); |
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} |
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|
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bool DataType::operator<(const DataType& other) const { |
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return m_baseTypeName < other.m_baseTypeName || |
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(m_baseTypeName == other.m_baseTypeName && |
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m_customTypeName < other.m_customTypeName || |
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(m_customTypeName == other.m_customTypeName && |
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m_size < other.m_size || |
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(m_size == other.m_size && |
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m_isPointer < other.m_isPointer))); |
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} |
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|
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bool DataType::operator>(const DataType& other) const { |
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return !(operator==(other) || operator<(other)); |
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} |
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|
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String DataType::asLongDescr() const { |
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String s = m_baseTypeName; |
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if (!m_customTypeName.empty()) |
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s += " " + customTypeName(true); |
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if (isPointer()) |
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s += " pointer"; |
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return s; |
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} |
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|
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String DataType::customTypeName(bool demangle) const { |
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if (!demangle) return m_customTypeName; |
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int status; |
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const char* result = |
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abi::__cxa_demangle(m_customTypeName.c_str(), 0, 0, &status); |
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return (status == 0) ? result : m_customTypeName; |
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} |
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|
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// *************** Member *************** |
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// * |
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|
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Member::Member() { |
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m_uid = NO_UID; |
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m_offset = 0; |
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} |
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|
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Member::Member(String name, UID uid, size_t offset, DataType type) { |
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m_name = name; |
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m_uid = uid; |
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m_offset = offset; |
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m_type = type; |
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} |
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|
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bool Member::isValid() const { |
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return m_uid && !m_name.empty() && m_type; |
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} |
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|
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bool Member::operator==(const Member& other) const { |
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return m_uid == other.m_uid && |
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m_offset == other.m_offset && |
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m_name == other.m_name && |
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m_type == other.m_type; |
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} |
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|
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bool Member::operator!=(const Member& other) const { |
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return !operator==(other); |
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} |
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|
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bool Member::operator<(const Member& other) const { |
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return m_uid < other.m_uid || |
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(m_uid == other.m_uid && |
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m_offset < other.m_offset || |
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(m_offset == other.m_offset && |
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m_name < other.m_name || |
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(m_name == other.m_name && |
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m_type < other.m_type))); |
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} |
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|
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bool Member::operator>(const Member& other) const { |
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return !(operator==(other) || operator<(other)); |
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} |
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|
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// *************** Object *************** |
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// * |
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|
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Object::Object() { |
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m_version = 0; |
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m_minVersion = 0; |
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} |
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|
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Object::Object(UIDChain uidChain, DataType type) { |
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m_type = type; |
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m_uid = uidChain; |
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m_version = 0; |
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m_minVersion = 0; |
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//m_data.resize(type.size()); |
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} |
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|
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bool Object::isValid() const { |
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return m_type && !m_uid.empty(); |
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} |
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|
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bool Object::operator==(const Object& other) const { |
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// ignoring all other member variables here |
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// (since UID stands for "unique" ;-) ) |
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return m_uid == other.m_uid && |
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m_type == other.m_type; |
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} |
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|
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bool Object::operator!=(const Object& other) const { |
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return !operator==(other); |
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} |
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|
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bool Object::operator<(const Object& other) const { |
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// ignoring all other member variables here |
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// (since UID stands for "unique" ;-) ) |
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return m_uid < other.m_uid || |
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(m_uid == other.m_uid && |
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m_type < other.m_type); |
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} |
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|
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bool Object::operator>(const Object& other) const { |
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return !(operator==(other) || operator<(other)); |
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} |
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|
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bool Object::isVersionCompatibleTo(const Object& other) const { |
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if (this->version() == other.version()) |
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return true; |
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if (this->version() > other.version()) |
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return this->minVersion() <= other.version(); |
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else |
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return other.minVersion() <= this->version(); |
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} |
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|
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void Object::setVersion(Version v) { |
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m_version = v; |
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} |
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|
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void Object::setMinVersion(Version v) { |
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m_minVersion = v; |
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} |
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|
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Member Object::memberNamed(String name) const { |
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for (int i = 0; i < m_members.size(); ++i) |
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if (m_members[i].name() == name) |
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return m_members[i]; |
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return Member(); |
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} |
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|
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Member Object::memberByUID(const UID& uid) const { |
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if (!uid) return Member(); |
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for (int i = 0; i < m_members.size(); ++i) |
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if (m_members[i].uid() == uid) |
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return m_members[i]; |
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return Member(); |
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} |
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|
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void Object::remove(const Member& member) { |
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for (int i = 0; i < m_members.size(); ++i) { |
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if (m_members[i] == member) { |
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m_members.erase(m_members.begin() + i); |
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return; |
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} |
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} |
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} |
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|
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std::vector<Member> Object::membersOfType(const DataType& type) const { |
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std::vector<Member> v; |
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for (int i = 0; i < m_members.size(); ++i) { |
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const Member& member = m_members[i]; |
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if (member.type() == type) |
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v.push_back(member); |
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} |
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return v; |
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} |
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|
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int Object::sequenceIndexOf(const Member& member) const { |
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for (int i = 0; i < m_members.size(); ++i) |
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if (m_members[i] == member) |
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return i; |
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return -1; |
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} |
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|
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// *************** Archive *************** |
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// * |
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|
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Archive::Archive() { |
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m_operation = OPERATION_NONE; |
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m_root = NO_UID; |
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m_isModified = false; |
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m_timeCreated = m_timeModified = LIBGIG_EPOCH_TIME; |
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} |
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|
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Archive::Archive(const RawData& data) { |
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m_operation = OPERATION_NONE; |
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m_root = NO_UID; |
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m_isModified = false; |
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m_timeCreated = m_timeModified = LIBGIG_EPOCH_TIME; |
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decode(m_rawData); |
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} |
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|
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Archive::Archive(const uint8_t* data, size_t size) { |
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m_operation = OPERATION_NONE; |
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m_root = NO_UID; |
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m_isModified = false; |
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m_timeCreated = m_timeModified = LIBGIG_EPOCH_TIME; |
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decode(data, size); |
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} |
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|
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Archive::~Archive() { |
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} |
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|
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Object& Archive::rootObject() { |
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return m_allObjects[m_root]; |
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} |
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|
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static String _encodeBlob(String data) { |
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return ToString(data.length()) + ":" + data; |
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} |
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|
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static String _encode(const UID& uid) { |
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String s; |
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s += _encodeBlob(ToString(size_t(uid.id))); |
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s += _encodeBlob(ToString(size_t(uid.size))); |
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return _encodeBlob(s); |
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} |
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|
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static String _encode(const time_t& time) { |
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return _encodeBlob(ToString(time)); |
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} |
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|
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static String _encode(const DataType& type) { |
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String s; |
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s += _encodeBlob(type.baseTypeName()); |
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s += _encodeBlob(type.customTypeName()); |
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s += _encodeBlob(ToString(type.size())); |
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s += _encodeBlob(ToString(type.isPointer())); |
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return _encodeBlob(s); |
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} |
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|
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static String _encode(const UIDChain& chain) { |
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String s; |
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for (int i = 0; i < chain.size(); ++i) |
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s += _encode(chain[i]); |
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return _encodeBlob(s); |
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} |
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|
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static String _encode(const Member& member) { |
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String s; |
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s += _encode(member.uid()); |
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s += _encodeBlob(ToString(member.offset())); |
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s += _encodeBlob(member.name()); |
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s += _encode(member.type()); |
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return _encodeBlob(s); |
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} |
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|
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static String _encode(const std::vector<Member>& members) { |
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String s; |
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for (int i = 0; i < members.size(); ++i) |
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s += _encode(members[i]); |
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return _encodeBlob(s); |
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} |
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|
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static String _primitiveObjectValueToString(const Object& obj) { |
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String s; |
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const DataType& type = obj.type(); |
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const ID& id = obj.uid().id; |
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void* ptr = obj.m_data.empty() ? (void*)id : (void*)&obj.m_data[0]; |
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if (!obj.m_data.empty()) |
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assert(type.size() == obj.m_data.size()); |
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if (type.isPrimitive() && !type.isPointer()) { |
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if (type.isInteger() || type.isEnum()) { |
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if (type.isSigned()) { |
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if (type.size() == 1) |
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s = ToString((int16_t)*(int8_t*)ptr); // int16_t: prevent ToString() to render an ASCII character |
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else if (type.size() == 2) |
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s = ToString(*(int16_t*)ptr); |
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else if (type.size() == 4) |
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s = ToString(*(int32_t*)ptr); |
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else if (type.size() == 8) |
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s = ToString(*(int64_t*)ptr); |
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else |
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assert(false /* unknown signed int type size */); |
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} else { |
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if (type.size() == 1) |
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s = ToString((uint16_t)*(uint8_t*)ptr); // uint16_t: prevent ToString() to render an ASCII character |
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else if (type.size() == 2) |
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s = ToString(*(uint16_t*)ptr); |
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else if (type.size() == 4) |
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s = ToString(*(uint32_t*)ptr); |
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else if (type.size() == 8) |
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s = ToString(*(uint64_t*)ptr); |
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else |
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assert(false /* unknown unsigned int type size */); |
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} |
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} else if (type.isReal()) { |
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if (type.size() == sizeof(float)) |
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s = ToString(*(float*)ptr); |
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else if (type.size() == sizeof(double)) |
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s = ToString(*(double*)ptr); |
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else |
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assert(false /* unknown floating point type */); |
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} else if (type.isBool()) { |
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s = ToString(*(bool*)ptr); |
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} else { |
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assert(false /* unknown primitive type */); |
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} |
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|
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} |
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return s; |
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} |
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|
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template<typename T> |
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static T _primitiveObjectValueToNumber(const Object& obj) { |
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T value = 0; |
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const DataType& type = obj.type(); |
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const ID& id = obj.uid().id; |
426 |
void* ptr = obj.m_data.empty() ? (void*)id : (void*)&obj.m_data[0]; |
427 |
if (!obj.m_data.empty()) |
428 |
assert(type.size() == obj.m_data.size()); |
429 |
if (type.isPrimitive() && !type.isPointer()) { |
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if (type.isInteger() || type.isEnum()) { |
431 |
if (type.isSigned()) { |
432 |
if (type.size() == 1) |
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value = (T)*(int8_t*)ptr; |
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else if (type.size() == 2) |
435 |
value = (T)*(int16_t*)ptr; |
436 |
else if (type.size() == 4) |
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value = (T)*(int32_t*)ptr; |
438 |
else if (type.size() == 8) |
439 |
value = (T)*(int64_t*)ptr; |
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else |
441 |
assert(false /* unknown signed int type size */); |
442 |
} else { |
443 |
if (type.size() == 1) |
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value = (T)*(uint8_t*)ptr; |
445 |
else if (type.size() == 2) |
446 |
value = (T)*(uint16_t*)ptr; |
447 |
else if (type.size() == 4) |
448 |
value = (T)*(uint32_t*)ptr; |
449 |
else if (type.size() == 8) |
450 |
value = (T)*(uint64_t*)ptr; |
451 |
else |
452 |
assert(false /* unknown unsigned int type size */); |
453 |
} |
454 |
} else if (type.isReal()) { |
455 |
if (type.size() == sizeof(float)) |
456 |
value = (T)*(float*)ptr; |
457 |
else if (type.size() == sizeof(double)) |
458 |
value = (T)*(double*)ptr; |
459 |
else |
460 |
assert(false /* unknown floating point type */); |
461 |
} else if (type.isBool()) { |
462 |
value = (T)*(bool*)ptr; |
463 |
} else { |
464 |
assert(false /* unknown primitive type */); |
465 |
} |
466 |
} |
467 |
return value; |
468 |
} |
469 |
|
470 |
static String _encodePrimitiveValue(const Object& obj) { |
471 |
return _encodeBlob( _primitiveObjectValueToString(obj) ); |
472 |
} |
473 |
|
474 |
static String _encode(const Object& obj) { |
475 |
String s; |
476 |
s += _encode(obj.type()); |
477 |
s += _encodeBlob(ToString(obj.version())); |
478 |
s += _encodeBlob(ToString(obj.minVersion())); |
479 |
s += _encode(obj.uidChain()); |
480 |
s += _encode(obj.members()); |
481 |
s += _encodePrimitiveValue(obj); |
482 |
return _encodeBlob(s); |
483 |
} |
484 |
|
485 |
String _encode(const Archive::ObjectPool& objects) { |
486 |
String s; |
487 |
for (Archive::ObjectPool::const_iterator itObject = objects.begin(); |
488 |
itObject != objects.end(); ++itObject) |
489 |
{ |
490 |
const Object& obj = itObject->second; |
491 |
s += _encode(obj); |
492 |
} |
493 |
return _encodeBlob(s); |
494 |
} |
495 |
|
496 |
#define MAGIC_START "Srx1v" |
497 |
#define ENCODING_FORMAT_MINOR_VERSION 0 |
498 |
|
499 |
String Archive::_encodeRootBlob() { |
500 |
String s; |
501 |
s += _encodeBlob(ToString(ENCODING_FORMAT_MINOR_VERSION)); |
502 |
s += _encode(m_root); |
503 |
s += _encode(m_allObjects); |
504 |
s += _encodeBlob(m_name); |
505 |
s += _encodeBlob(m_comment); |
506 |
s += _encode(m_timeCreated); |
507 |
s += _encode(m_timeModified); |
508 |
return _encodeBlob(s); |
509 |
} |
510 |
|
511 |
void Archive::encode() { |
512 |
m_rawData.clear(); |
513 |
String s = MAGIC_START; |
514 |
m_timeModified = time(NULL); |
515 |
if (m_timeCreated == LIBGIG_EPOCH_TIME) |
516 |
m_timeCreated = m_timeModified; |
517 |
s += _encodeRootBlob(); |
518 |
m_rawData.resize(s.length() + 1); |
519 |
memcpy(&m_rawData[0], &s[0], s.length() + 1); |
520 |
m_isModified = false; |
521 |
} |
522 |
|
523 |
struct _Blob { |
524 |
const char* p; |
525 |
const char* end; |
526 |
}; |
527 |
|
528 |
static _Blob _decodeBlob(const char* p, const char* end, bool bThrow = true) { |
529 |
if (!bThrow && p >= end) { |
530 |
const _Blob blob = { p, end }; |
531 |
return blob; |
532 |
} |
533 |
size_t sz = 0; |
534 |
for (; true; ++p) { |
535 |
if (p >= end) |
536 |
throw Exception("Decode Error: Missing blob"); |
537 |
const char& c = *p; |
538 |
if (c == ':') break; |
539 |
if (c < '0' || c > '9') |
540 |
throw Exception("Decode Error: Missing blob size"); |
541 |
sz *= 10; |
542 |
sz += size_t(c - '0'); |
543 |
} |
544 |
++p; |
545 |
if (p + sz > end) |
546 |
throw Exception("Decode Error: Premature end of blob"); |
547 |
const _Blob blob = { p, p + sz }; |
548 |
return blob; |
549 |
} |
550 |
|
551 |
template<typename T_int> |
552 |
static T_int _popIntBlob(const char*& p, const char* end) { |
553 |
_Blob blob = _decodeBlob(p, end); |
554 |
p = blob.p; |
555 |
end = blob.end; |
556 |
|
557 |
T_int sign = 1; |
558 |
T_int i = 0; |
559 |
if (p >= end) |
560 |
throw Exception("Decode Error: premature end of int blob"); |
561 |
if (*p == '-') { |
562 |
sign = -1; |
563 |
++p; |
564 |
} |
565 |
for (; p < end; ++p) { |
566 |
const char& c = *p; |
567 |
if (c < '0' || c > '9') |
568 |
throw Exception("Decode Error: Invalid int blob format"); |
569 |
i *= 10; |
570 |
i += size_t(c - '0'); |
571 |
} |
572 |
return i * sign; |
573 |
} |
574 |
|
575 |
template<typename T_int> |
576 |
static void _popIntBlob(const char*& p, const char* end, RawData& rawData) { |
577 |
const T_int i = _popIntBlob<T_int>(p, end); |
578 |
*(T_int*)&rawData[0] = i; |
579 |
} |
580 |
|
581 |
template<typename T_real> |
582 |
static T_real _popRealBlob(const char*& p, const char* end) { |
583 |
_Blob blob = _decodeBlob(p, end); |
584 |
p = blob.p; |
585 |
end = blob.end; |
586 |
|
587 |
if (p >= end || (end - p) < 1) |
588 |
throw Exception("Decode Error: premature end of real blob"); |
589 |
|
590 |
String s(p, size_t(end - p)); |
591 |
|
592 |
T_real r; |
593 |
if (sizeof(T_real) <= sizeof(double)) |
594 |
r = atof(s.c_str()); |
595 |
else |
596 |
assert(false /* unknown real type */); |
597 |
|
598 |
p += s.length(); |
599 |
|
600 |
return r; |
601 |
} |
602 |
|
603 |
template<typename T_real> |
604 |
static void _popRealBlob(const char*& p, const char* end, RawData& rawData) { |
605 |
const T_real r = _popRealBlob<T_real>(p, end); |
606 |
*(T_real*)&rawData[0] = r; |
607 |
} |
608 |
|
609 |
static String _popStringBlob(const char*& p, const char* end) { |
610 |
_Blob blob = _decodeBlob(p, end); |
611 |
p = blob.p; |
612 |
end = blob.end; |
613 |
if (end - p < 0) |
614 |
throw Exception("Decode Error: missing String blob"); |
615 |
String s; |
616 |
const size_t sz = end - p; |
617 |
s.resize(sz); |
618 |
memcpy(&s[0], p, sz); |
619 |
p += sz; |
620 |
return s; |
621 |
} |
622 |
|
623 |
static time_t _popTimeBlob(const char*& p, const char* end) { |
624 |
const uint64_t i = _popIntBlob<uint64_t>(p, end); |
625 |
return (time_t) i; |
626 |
} |
627 |
|
628 |
DataType _popDataTypeBlob(const char*& p, const char* end) { |
629 |
_Blob blob = _decodeBlob(p, end); |
630 |
p = blob.p; |
631 |
end = blob.end; |
632 |
|
633 |
DataType type; |
634 |
type.m_baseTypeName = _popStringBlob(p, end); |
635 |
type.m_customTypeName = _popStringBlob(p, end); |
636 |
type.m_size = _popIntBlob<int>(p, end); |
637 |
type.m_isPointer = _popIntBlob<bool>(p, end); |
638 |
return type; |
639 |
} |
640 |
|
641 |
static UID _popUIDBlob(const char*& p, const char* end) { |
642 |
_Blob blob = _decodeBlob(p, end); |
643 |
p = blob.p; |
644 |
end = blob.end; |
645 |
|
646 |
if (p >= end) |
647 |
throw Exception("Decode Error: premature end of UID blob"); |
648 |
|
649 |
const ID id = (ID) _popIntBlob<size_t>(p, end); |
650 |
const size_t size = _popIntBlob<size_t>(p, end); |
651 |
|
652 |
const UID uid = { id, size }; |
653 |
return uid; |
654 |
} |
655 |
|
656 |
static UIDChain _popUIDChainBlob(const char*& p, const char* end) { |
657 |
_Blob blob = _decodeBlob(p, end); |
658 |
p = blob.p; |
659 |
end = blob.end; |
660 |
|
661 |
UIDChain chain; |
662 |
while (p < end) { |
663 |
const UID uid = _popUIDBlob(p, end); |
664 |
chain.push_back(uid); |
665 |
} |
666 |
assert(!chain.empty()); |
667 |
return chain; |
668 |
} |
669 |
|
670 |
static Member _popMemberBlob(const char*& p, const char* end) { |
671 |
_Blob blob = _decodeBlob(p, end, false); |
672 |
p = blob.p; |
673 |
end = blob.end; |
674 |
|
675 |
Member m; |
676 |
if (p >= end) return m; |
677 |
|
678 |
m.m_uid = _popUIDBlob(p, end); |
679 |
m.m_offset = _popIntBlob<size_t>(p, end); |
680 |
m.m_name = _popStringBlob(p, end); |
681 |
m.m_type = _popDataTypeBlob(p, end); |
682 |
assert(m.type()); |
683 |
assert(!m.name().empty()); |
684 |
assert(m.uid().isValid()); |
685 |
return m; |
686 |
} |
687 |
|
688 |
static std::vector<Member> _popMembersBlob(const char*& p, const char* end) { |
689 |
_Blob blob = _decodeBlob(p, end, false); |
690 |
p = blob.p; |
691 |
end = blob.end; |
692 |
|
693 |
std::vector<Member> members; |
694 |
while (p < end) { |
695 |
const Member member = _popMemberBlob(p, end); |
696 |
if (member) |
697 |
members.push_back(member); |
698 |
else |
699 |
break; |
700 |
} |
701 |
return members; |
702 |
} |
703 |
|
704 |
static void _popPrimitiveValue(const char*& p, const char* end, Object& obj) { |
705 |
const DataType& type = obj.type(); |
706 |
if (type.isPrimitive() && !type.isPointer()) { |
707 |
obj.m_data.resize(type.size()); |
708 |
if (type.isInteger() || type.isEnum()) { |
709 |
if (type.isSigned()) { |
710 |
if (type.size() == 1) |
711 |
_popIntBlob<int8_t>(p, end, obj.m_data); |
712 |
else if (type.size() == 2) |
713 |
_popIntBlob<int16_t>(p, end, obj.m_data); |
714 |
else if (type.size() == 4) |
715 |
_popIntBlob<int32_t>(p, end, obj.m_data); |
716 |
else if (type.size() == 8) |
717 |
_popIntBlob<int64_t>(p, end, obj.m_data); |
718 |
else |
719 |
assert(false /* unknown signed int type size */); |
720 |
} else { |
721 |
if (type.size() == 1) |
722 |
_popIntBlob<uint8_t>(p, end, obj.m_data); |
723 |
else if (type.size() == 2) |
724 |
_popIntBlob<uint16_t>(p, end, obj.m_data); |
725 |
else if (type.size() == 4) |
726 |
_popIntBlob<uint32_t>(p, end, obj.m_data); |
727 |
else if (type.size() == 8) |
728 |
_popIntBlob<uint64_t>(p, end, obj.m_data); |
729 |
else |
730 |
assert(false /* unknown unsigned int type size */); |
731 |
} |
732 |
} else if (type.isReal()) { |
733 |
if (type.size() == sizeof(float)) |
734 |
_popRealBlob<float>(p, end, obj.m_data); |
735 |
else if (type.size() == sizeof(double)) |
736 |
_popRealBlob<double>(p, end, obj.m_data); |
737 |
else |
738 |
assert(false /* unknown floating point type */); |
739 |
} else if (type.isBool()) { |
740 |
_popIntBlob<uint8_t>(p, end, obj.m_data); |
741 |
} else { |
742 |
assert(false /* unknown primitive type */); |
743 |
} |
744 |
|
745 |
} else { |
746 |
// don't whine if the empty blob was not added on encoder side |
747 |
_Blob blob = _decodeBlob(p, end, false); |
748 |
p = blob.p; |
749 |
end = blob.end; |
750 |
} |
751 |
} |
752 |
|
753 |
static Object _popObjectBlob(const char*& p, const char* end) { |
754 |
_Blob blob = _decodeBlob(p, end, false); |
755 |
p = blob.p; |
756 |
end = blob.end; |
757 |
|
758 |
Object obj; |
759 |
if (p >= end) return obj; |
760 |
|
761 |
obj.m_type = _popDataTypeBlob(p, end); |
762 |
obj.m_version = _popIntBlob<Version>(p, end); |
763 |
obj.m_minVersion = _popIntBlob<Version>(p, end); |
764 |
obj.m_uid = _popUIDChainBlob(p, end); |
765 |
obj.m_members = _popMembersBlob(p, end); |
766 |
_popPrimitiveValue(p, end, obj); |
767 |
assert(obj.type()); |
768 |
return obj; |
769 |
} |
770 |
|
771 |
void Archive::_popObjectsBlob(const char*& p, const char* end) { |
772 |
_Blob blob = _decodeBlob(p, end, false); |
773 |
p = blob.p; |
774 |
end = blob.end; |
775 |
|
776 |
if (p >= end) |
777 |
throw Exception("Decode Error: Premature end of objects blob"); |
778 |
|
779 |
while (true) { |
780 |
const Object obj = _popObjectBlob(p, end); |
781 |
if (!obj) break; |
782 |
m_allObjects[obj.uid()] = obj; |
783 |
} |
784 |
} |
785 |
|
786 |
void Archive::_popRootBlob(const char*& p, const char* end) { |
787 |
_Blob blob = _decodeBlob(p, end, false); |
788 |
p = blob.p; |
789 |
end = blob.end; |
790 |
|
791 |
if (p >= end) |
792 |
throw Exception("Decode Error: Premature end of root blob"); |
793 |
|
794 |
// just in case this encoding format will be extended in future |
795 |
// (currently not used) |
796 |
const int formatMinorVersion = _popIntBlob<int>(p, end); |
797 |
|
798 |
m_root = _popUIDBlob(p, end); |
799 |
if (!m_root) |
800 |
throw Exception("Decode Error: No root object"); |
801 |
|
802 |
_popObjectsBlob(p, end); |
803 |
if (!m_allObjects[m_root]) |
804 |
throw Exception("Decode Error: Missing declared root object"); |
805 |
|
806 |
m_name = _popStringBlob(p, end); |
807 |
m_comment = _popStringBlob(p, end); |
808 |
m_timeCreated = _popTimeBlob(p, end); |
809 |
m_timeModified = _popTimeBlob(p, end); |
810 |
} |
811 |
|
812 |
void Archive::decode(const RawData& data) { |
813 |
m_rawData = data; |
814 |
m_allObjects.clear(); |
815 |
m_isModified = false; |
816 |
m_timeCreated = m_timeModified = LIBGIG_EPOCH_TIME; |
817 |
const char* p = (const char*) &data[0]; |
818 |
const char* end = p + data.size(); |
819 |
if (memcmp(p, MAGIC_START, std::min(strlen(MAGIC_START), data.size()))) |
820 |
throw Exception("Decode Error: Magic start missing!"); |
821 |
p += strlen(MAGIC_START); |
822 |
_popRootBlob(p, end); |
823 |
} |
824 |
|
825 |
void Archive::decode(const uint8_t* data, size_t size) { |
826 |
RawData rawData; |
827 |
rawData.resize(size); |
828 |
memcpy(&rawData[0], data, size); |
829 |
decode(rawData); |
830 |
} |
831 |
|
832 |
const RawData& Archive::rawData() { |
833 |
if (m_isModified) encode(); |
834 |
return m_rawData; |
835 |
} |
836 |
|
837 |
String Archive::rawDataFormat() const { |
838 |
return MAGIC_START; |
839 |
} |
840 |
|
841 |
bool Archive::isModified() const { |
842 |
return m_isModified; |
843 |
} |
844 |
|
845 |
void Archive::clear() { |
846 |
m_allObjects.clear(); |
847 |
m_operation = OPERATION_NONE; |
848 |
m_root = NO_UID; |
849 |
m_rawData.clear(); |
850 |
m_isModified = false; |
851 |
m_timeCreated = m_timeModified = LIBGIG_EPOCH_TIME; |
852 |
} |
853 |
|
854 |
String Archive::name() const { |
855 |
return m_name; |
856 |
} |
857 |
|
858 |
void Archive::setName(String name) { |
859 |
if (m_name == name) return; |
860 |
m_name = name; |
861 |
m_isModified = true; |
862 |
} |
863 |
|
864 |
String Archive::comment() const { |
865 |
return m_comment; |
866 |
} |
867 |
|
868 |
void Archive::setComment(String comment) { |
869 |
if (m_comment == comment) return; |
870 |
m_comment = comment; |
871 |
m_isModified = true; |
872 |
} |
873 |
|
874 |
static tm _convertTimeStamp(const time_t& time, time_base_t base) { |
875 |
tm* pTm; |
876 |
switch (base) { |
877 |
case LOCAL_TIME: |
878 |
pTm = localtime(&time); |
879 |
break; |
880 |
case UTC_TIME: |
881 |
pTm = gmtime(&time); |
882 |
break; |
883 |
default: |
884 |
throw Exception("Time stamp with unknown time base (" + ToString((int64_t)base) + ") requested"); |
885 |
} |
886 |
if (!pTm) |
887 |
throw Exception("Failed assembling time stamp structure"); |
888 |
return *pTm; |
889 |
} |
890 |
|
891 |
time_t Archive::timeStampCreated() const { |
892 |
return m_timeCreated; |
893 |
} |
894 |
|
895 |
time_t Archive::timeStampModified() const { |
896 |
return m_timeModified; |
897 |
} |
898 |
|
899 |
tm Archive::dateTimeCreated(time_base_t base) const { |
900 |
return _convertTimeStamp(m_timeCreated, base); |
901 |
} |
902 |
|
903 |
tm Archive::dateTimeModified(time_base_t base) const { |
904 |
return _convertTimeStamp(m_timeModified, base); |
905 |
} |
906 |
|
907 |
void Archive::removeMember(Object& parent, const Member& member) { |
908 |
parent.remove(member); |
909 |
m_isModified = true; |
910 |
} |
911 |
|
912 |
void Archive::remove(const Object& obj) { |
913 |
//FIXME: Should traverse from root object and remove all members associated with this object |
914 |
if (!obj.uid()) return; |
915 |
m_allObjects.erase(obj.uid()); |
916 |
m_isModified = true; |
917 |
} |
918 |
|
919 |
Object& Archive::objectByUID(const UID& uid) { |
920 |
return m_allObjects[uid]; |
921 |
} |
922 |
|
923 |
void Archive::setVersion(Object& object, Version v) { |
924 |
if (!object) return; |
925 |
object.setVersion(v); |
926 |
m_isModified = true; |
927 |
} |
928 |
|
929 |
void Archive::setMinVersion(Object& object, Version v) { |
930 |
if (!object) return; |
931 |
object.setMinVersion(v); |
932 |
m_isModified = true; |
933 |
} |
934 |
|
935 |
void Archive::setEnumValue(Object& object, uint64_t value) { |
936 |
if (!object) return; |
937 |
if (!object.type().isEnum()) |
938 |
throw Exception("Not an enum data type"); |
939 |
Object* pObject = &object; |
940 |
if (object.type().isPointer()) { |
941 |
Object& obj = objectByUID(object.uid(1)); |
942 |
if (!obj) return; |
943 |
pObject = &obj; |
944 |
} |
945 |
const int nativeEnumSize = sizeof(enum operation_t); |
946 |
DataType& type = const_cast<DataType&>( pObject->type() ); |
947 |
// original serializer ("sender") might have had a different word size |
948 |
// than this machine, adjust type object in this case |
949 |
if (type.size() != nativeEnumSize) { |
950 |
type.m_size = nativeEnumSize; |
951 |
} |
952 |
pObject->m_data.resize(type.size()); |
953 |
void* ptr = &pObject->m_data[0]; |
954 |
if (type.size() == 1) |
955 |
*(uint8_t*)ptr = (uint8_t)value; |
956 |
else if (type.size() == 2) |
957 |
*(uint16_t*)ptr = (uint16_t)value; |
958 |
else if (type.size() == 4) |
959 |
*(uint32_t*)ptr = (uint32_t)value; |
960 |
else if (type.size() == 8) |
961 |
*(uint64_t*)ptr = (uint64_t)value; |
962 |
else |
963 |
assert(false /* unknown enum type size */); |
964 |
m_isModified = true; |
965 |
} |
966 |
|
967 |
void Archive::setIntValue(Object& object, int64_t value) { |
968 |
if (!object) return; |
969 |
if (!object.type().isInteger()) |
970 |
throw Exception("Not an integer data type"); |
971 |
Object* pObject = &object; |
972 |
if (object.type().isPointer()) { |
973 |
Object& obj = objectByUID(object.uid(1)); |
974 |
if (!obj) return; |
975 |
pObject = &obj; |
976 |
} |
977 |
const DataType& type = pObject->type(); |
978 |
pObject->m_data.resize(type.size()); |
979 |
void* ptr = &pObject->m_data[0]; |
980 |
if (type.isSigned()) { |
981 |
if (type.size() == 1) |
982 |
*(int8_t*)ptr = (int8_t)value; |
983 |
else if (type.size() == 2) |
984 |
*(int16_t*)ptr = (int16_t)value; |
985 |
else if (type.size() == 4) |
986 |
*(int32_t*)ptr = (int32_t)value; |
987 |
else if (type.size() == 8) |
988 |
*(int64_t*)ptr = (int64_t)value; |
989 |
else |
990 |
assert(false /* unknown signed int type size */); |
991 |
} else { |
992 |
if (type.size() == 1) |
993 |
*(uint8_t*)ptr = (uint8_t)value; |
994 |
else if (type.size() == 2) |
995 |
*(uint16_t*)ptr = (uint16_t)value; |
996 |
else if (type.size() == 4) |
997 |
*(uint32_t*)ptr = (uint32_t)value; |
998 |
else if (type.size() == 8) |
999 |
*(uint64_t*)ptr = (uint64_t)value; |
1000 |
else |
1001 |
assert(false /* unknown unsigned int type size */); |
1002 |
} |
1003 |
m_isModified = true; |
1004 |
} |
1005 |
|
1006 |
void Archive::setRealValue(Object& object, double value) { |
1007 |
if (!object) return; |
1008 |
if (!object.type().isReal()) |
1009 |
throw Exception("Not a real data type"); |
1010 |
Object* pObject = &object; |
1011 |
if (object.type().isPointer()) { |
1012 |
Object& obj = objectByUID(object.uid(1)); |
1013 |
if (!obj) return; |
1014 |
pObject = &obj; |
1015 |
} |
1016 |
const DataType& type = pObject->type(); |
1017 |
pObject->m_data.resize(type.size()); |
1018 |
void* ptr = &pObject->m_data[0]; |
1019 |
if (type.size() == sizeof(float)) |
1020 |
*(float*)ptr = (float)value; |
1021 |
else if (type.size() == sizeof(double)) |
1022 |
*(double*)ptr = (double)value; |
1023 |
else |
1024 |
assert(false /* unknown real type size */); |
1025 |
m_isModified = true; |
1026 |
} |
1027 |
|
1028 |
void Archive::setBoolValue(Object& object, bool value) { |
1029 |
if (!object) return; |
1030 |
if (!object.type().isBool()) |
1031 |
throw Exception("Not a bool data type"); |
1032 |
Object* pObject = &object; |
1033 |
if (object.type().isPointer()) { |
1034 |
Object& obj = objectByUID(object.uid(1)); |
1035 |
if (!obj) return; |
1036 |
pObject = &obj; |
1037 |
} |
1038 |
const DataType& type = pObject->type(); |
1039 |
pObject->m_data.resize(type.size()); |
1040 |
bool* ptr = (bool*)&pObject->m_data[0]; |
1041 |
*ptr = value; |
1042 |
m_isModified = true; |
1043 |
} |
1044 |
|
1045 |
void Archive::setAutoValue(Object& object, String value) { |
1046 |
if (!object) return; |
1047 |
const DataType& type = object.type(); |
1048 |
if (type.isInteger()) |
1049 |
setIntValue(object, atoll(value.c_str())); |
1050 |
else if (type.isReal()) |
1051 |
setRealValue(object, atof(value.c_str())); |
1052 |
else if (type.isBool()) |
1053 |
setBoolValue(object, atof(value.c_str())); |
1054 |
else if (type.isEnum()) |
1055 |
setEnumValue(object, atoll(value.c_str())); |
1056 |
else |
1057 |
throw Exception("Not a primitive data type"); |
1058 |
} |
1059 |
|
1060 |
String Archive::valueAsString(const Object& object) { |
1061 |
if (!object) |
1062 |
throw Exception("Invalid object"); |
1063 |
if (object.type().isClass()) |
1064 |
throw Exception("Object is class type"); |
1065 |
const Object* pObject = &object; |
1066 |
if (object.type().isPointer()) { |
1067 |
const Object& obj = objectByUID(object.uid(1)); |
1068 |
if (!obj) return ""; |
1069 |
pObject = &obj; |
1070 |
} |
1071 |
return _primitiveObjectValueToString(*pObject); |
1072 |
} |
1073 |
|
1074 |
int64_t Archive::valueAsInt(const Object& object) { |
1075 |
if (!object) |
1076 |
throw Exception("Invalid object"); |
1077 |
if (!object.type().isInteger() && !object.type().isEnum()) |
1078 |
throw Exception("Object is neither an integer nor an enum"); |
1079 |
const Object* pObject = &object; |
1080 |
if (object.type().isPointer()) { |
1081 |
const Object& obj = objectByUID(object.uid(1)); |
1082 |
if (!obj) return 0; |
1083 |
pObject = &obj; |
1084 |
} |
1085 |
return _primitiveObjectValueToNumber<int64_t>(*pObject); |
1086 |
} |
1087 |
|
1088 |
double Archive::valueAsReal(const Object& object) { |
1089 |
if (!object) |
1090 |
throw Exception("Invalid object"); |
1091 |
if (!object.type().isReal()) |
1092 |
throw Exception("Object is not an real type"); |
1093 |
const Object* pObject = &object; |
1094 |
if (object.type().isPointer()) { |
1095 |
const Object& obj = objectByUID(object.uid(1)); |
1096 |
if (!obj) return 0; |
1097 |
pObject = &obj; |
1098 |
} |
1099 |
return _primitiveObjectValueToNumber<double>(*pObject); |
1100 |
} |
1101 |
|
1102 |
bool Archive::valueAsBool(const Object& object) { |
1103 |
if (!object) |
1104 |
throw Exception("Invalid object"); |
1105 |
if (!object.type().isBool()) |
1106 |
throw Exception("Object is not a bool"); |
1107 |
const Object* pObject = &object; |
1108 |
if (object.type().isPointer()) { |
1109 |
const Object& obj = objectByUID(object.uid(1)); |
1110 |
if (!obj) return 0; |
1111 |
pObject = &obj; |
1112 |
} |
1113 |
return _primitiveObjectValueToNumber<bool>(*pObject); |
1114 |
} |
1115 |
|
1116 |
// *************** Archive::Syncer *************** |
1117 |
// * |
1118 |
|
1119 |
Archive::Syncer::Syncer(Archive& dst, Archive& src) |
1120 |
: m_dst(dst), m_src(src) |
1121 |
{ |
1122 |
const Object srcRootObj = src.rootObject(); |
1123 |
const Object dstRootObj = dst.rootObject(); |
1124 |
if (!srcRootObj) |
1125 |
throw Exception("No source root object!"); |
1126 |
if (!dstRootObj) |
1127 |
throw Exception("Expected destination root object not found!"); |
1128 |
syncObject(dstRootObj, srcRootObj); |
1129 |
} |
1130 |
|
1131 |
void Archive::Syncer::syncPrimitive(const Object& dstObj, const Object& srcObj) { |
1132 |
assert(srcObj.rawData().size() == dstObj.type().size()); |
1133 |
void* pDst = (void*)dstObj.uid().id; |
1134 |
memcpy(pDst, &srcObj.rawData()[0], dstObj.type().size()); |
1135 |
} |
1136 |
|
1137 |
void Archive::Syncer::syncPointer(const Object& dstObj, const Object& srcObj) { |
1138 |
assert(dstObj.type().isPointer()); |
1139 |
assert(dstObj.type() == srcObj.type()); |
1140 |
const Object& pointedDstObject = m_dst.m_allObjects[dstObj.uid(1)]; |
1141 |
const Object& pointedSrcObject = m_src.m_allObjects[srcObj.uid(1)]; |
1142 |
syncObject(pointedDstObject, pointedSrcObject); |
1143 |
} |
1144 |
|
1145 |
void Archive::Syncer::syncObject(const Object& dstObj, const Object& srcObj) { |
1146 |
if (!dstObj || !srcObj) return; // end of recursion |
1147 |
if (!dstObj.isVersionCompatibleTo(srcObj)) |
1148 |
throw Exception("Version incompatible (destination version " + |
1149 |
ToString(dstObj.version()) + " [min. version " + |
1150 |
ToString(dstObj.minVersion()) + "], source version " + |
1151 |
ToString(srcObj.version()) + " [min. version " + |
1152 |
ToString(srcObj.minVersion()) + "])"); |
1153 |
if (dstObj.type() != srcObj.type()) |
1154 |
throw Exception("Incompatible data structure type (destination type " + |
1155 |
dstObj.type().asLongDescr() + " vs. source type " + |
1156 |
srcObj.type().asLongDescr() + ")"); |
1157 |
|
1158 |
// prevent syncing this object again, and thus also prevent endless |
1159 |
// loop on data structures with cyclic relations |
1160 |
m_dst.m_allObjects.erase(dstObj.uid()); |
1161 |
|
1162 |
if (dstObj.type().isPrimitive() && !dstObj.type().isPointer()) { |
1163 |
syncPrimitive(dstObj, srcObj); |
1164 |
return; // end of recursion |
1165 |
} |
1166 |
|
1167 |
if (dstObj.type().isPointer()) { |
1168 |
syncPointer(dstObj, srcObj); |
1169 |
return; |
1170 |
} |
1171 |
|
1172 |
assert(dstObj.type().isClass()); |
1173 |
for (int iMember = 0; iMember < srcObj.members().size(); ++iMember) { |
1174 |
const Member& srcMember = srcObj.members()[iMember]; |
1175 |
Member dstMember = dstMemberMatching(dstObj, srcObj, srcMember); |
1176 |
if (!dstMember) |
1177 |
throw Exception("Expected member missing in destination object"); |
1178 |
syncMember(dstMember, srcMember); |
1179 |
} |
1180 |
} |
1181 |
|
1182 |
Member Archive::Syncer::dstMemberMatching(const Object& dstObj, const Object& srcObj, const Member& srcMember) { |
1183 |
Member dstMember = dstObj.memberNamed(srcMember.name()); |
1184 |
if (dstMember) |
1185 |
return (dstMember.type() == srcMember.type()) ? dstMember : Member(); |
1186 |
std::vector<Member> members = dstObj.membersOfType(srcMember.type()); |
1187 |
if (members.size() <= 0) |
1188 |
return Member(); |
1189 |
if (members.size() == 1) |
1190 |
return members[0]; |
1191 |
for (int i = 0; i < members.size(); ++i) |
1192 |
if (members[i].offset() == srcMember.offset()) |
1193 |
return members[i]; |
1194 |
const int srcSeqNr = srcObj.sequenceIndexOf(srcMember); |
1195 |
assert(srcSeqNr >= 0); // should never happen, otherwise there is a bug |
1196 |
for (int i = 0; i < members.size(); ++i) { |
1197 |
const int dstSeqNr = dstObj.sequenceIndexOf(members[i]); |
1198 |
if (dstSeqNr == srcSeqNr) |
1199 |
return members[i]; |
1200 |
} |
1201 |
return Member(); // give up! |
1202 |
} |
1203 |
|
1204 |
void Archive::Syncer::syncMember(const Member& dstMember, const Member& srcMember) { |
1205 |
assert(dstMember && srcMember); |
1206 |
assert(dstMember.type() == srcMember.type()); |
1207 |
const Object dstObj = m_dst.m_allObjects[dstMember.uid()]; |
1208 |
const Object srcObj = m_src.m_allObjects[srcMember.uid()]; |
1209 |
syncObject(dstObj, srcObj); |
1210 |
} |
1211 |
|
1212 |
// *************** Exception *************** |
1213 |
// * |
1214 |
|
1215 |
void Exception::PrintMessage() { |
1216 |
std::cout << "Serialization::Exception: " << Message << std::endl; |
1217 |
} |
1218 |
|
1219 |
} // namespace Serialization |