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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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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()); |
| 371 |
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 |
| 376 |
else if (type.size() == 2) |
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s = ToString(*(int16_t*)ptr); |
| 378 |
else if (type.size() == 4) |
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s = ToString(*(int32_t*)ptr); |
| 380 |
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 |
| 387 |
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 */); |
| 395 |
} |
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} else if (type.isReal()) { |
| 397 |
if (type.size() == sizeof(float)) |
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s = ToString(*(float*)ptr); |
| 399 |
else if (type.size() == sizeof(double)) |
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s = ToString(*(double*)ptr); |
| 401 |
else |
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assert(false /* unknown floating point type */); |
| 403 |
} else if (type.isBool()) { |
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s = ToString(*(bool*)ptr); |
| 405 |
} else { |
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assert(false /* unknown primitive type */); |
| 407 |
} |
| 408 |
|
| 409 |
} |
| 410 |
return s; |
| 411 |
} |
| 412 |
|
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template<typename T> |
| 414 |
static T _primitiveObjectValueToNumber(const Object& obj) { |
| 415 |
T value = 0; |
| 416 |
const DataType& type = obj.type(); |
| 417 |
const ID& id = obj.uid().id; |
| 418 |
void* ptr = obj.m_data.empty() ? (void*)id : (void*)&obj.m_data[0]; |
| 419 |
if (!obj.m_data.empty()) |
| 420 |
assert(type.size() == obj.m_data.size()); |
| 421 |
if (type.isPrimitive() && !type.isPointer()) { |
| 422 |
if (type.isInteger() || type.isEnum()) { |
| 423 |
if (type.isSigned()) { |
| 424 |
if (type.size() == 1) |
| 425 |
value = (T)*(int8_t*)ptr; |
| 426 |
else if (type.size() == 2) |
| 427 |
value = (T)*(int16_t*)ptr; |
| 428 |
else if (type.size() == 4) |
| 429 |
value = (T)*(int32_t*)ptr; |
| 430 |
else if (type.size() == 8) |
| 431 |
value = (T)*(int64_t*)ptr; |
| 432 |
else |
| 433 |
assert(false /* unknown signed int type size */); |
| 434 |
} else { |
| 435 |
if (type.size() == 1) |
| 436 |
value = (T)*(uint8_t*)ptr; |
| 437 |
else if (type.size() == 2) |
| 438 |
value = (T)*(uint16_t*)ptr; |
| 439 |
else if (type.size() == 4) |
| 440 |
value = (T)*(uint32_t*)ptr; |
| 441 |
else if (type.size() == 8) |
| 442 |
value = (T)*(uint64_t*)ptr; |
| 443 |
else |
| 444 |
assert(false /* unknown unsigned int type size */); |
| 445 |
} |
| 446 |
} else if (type.isReal()) { |
| 447 |
if (type.size() == sizeof(float)) |
| 448 |
value = (T)*(float*)ptr; |
| 449 |
else if (type.size() == sizeof(double)) |
| 450 |
value = (T)*(double*)ptr; |
| 451 |
else |
| 452 |
assert(false /* unknown floating point type */); |
| 453 |
} else if (type.isBool()) { |
| 454 |
value = (T)*(bool*)ptr; |
| 455 |
} else { |
| 456 |
assert(false /* unknown primitive type */); |
| 457 |
} |
| 458 |
} |
| 459 |
return value; |
| 460 |
} |
| 461 |
|
| 462 |
static String _encodePrimitiveValue(const Object& obj) { |
| 463 |
return _encodeBlob( _primitiveObjectValueToString(obj) ); |
| 464 |
} |
| 465 |
|
| 466 |
static String _encode(const Object& obj) { |
| 467 |
String s; |
| 468 |
s += _encode(obj.type()); |
| 469 |
s += _encodeBlob(ToString(obj.version())); |
| 470 |
s += _encodeBlob(ToString(obj.minVersion())); |
| 471 |
s += _encode(obj.uidChain()); |
| 472 |
s += _encode(obj.members()); |
| 473 |
s += _encodePrimitiveValue(obj); |
| 474 |
return _encodeBlob(s); |
| 475 |
} |
| 476 |
|
| 477 |
String _encode(const Archive::ObjectPool& objects) { |
| 478 |
String s; |
| 479 |
for (Archive::ObjectPool::const_iterator itObject = objects.begin(); |
| 480 |
itObject != objects.end(); ++itObject) |
| 481 |
{ |
| 482 |
const Object& obj = itObject->second; |
| 483 |
s += _encode(obj); |
| 484 |
} |
| 485 |
return _encodeBlob(s); |
| 486 |
} |
| 487 |
|
| 488 |
#define MAGIC_START "Srx1v" |
| 489 |
#define ENCODING_FORMAT_MINOR_VERSION 0 |
| 490 |
|
| 491 |
String Archive::_encodeRootBlob() { |
| 492 |
String s; |
| 493 |
s += _encodeBlob(ToString(ENCODING_FORMAT_MINOR_VERSION)); |
| 494 |
s += _encode(m_root); |
| 495 |
s += _encode(m_allObjects); |
| 496 |
s += _encodeBlob(m_name); |
| 497 |
s += _encodeBlob(m_comment); |
| 498 |
s += _encode(m_timeCreated); |
| 499 |
s += _encode(m_timeModified); |
| 500 |
return _encodeBlob(s); |
| 501 |
} |
| 502 |
|
| 503 |
void Archive::encode() { |
| 504 |
m_rawData.clear(); |
| 505 |
String s = MAGIC_START; |
| 506 |
m_timeModified = time(NULL); |
| 507 |
if (m_timeCreated == LIBGIG_EPOCH_TIME) |
| 508 |
m_timeCreated = m_timeModified; |
| 509 |
s += _encodeRootBlob(); |
| 510 |
m_rawData.resize(s.length() + 1); |
| 511 |
memcpy(&m_rawData[0], &s[0], s.length() + 1); |
| 512 |
m_isModified = false; |
| 513 |
} |
| 514 |
|
| 515 |
struct _Blob { |
| 516 |
const char* p; |
| 517 |
const char* end; |
| 518 |
}; |
| 519 |
|
| 520 |
static _Blob _decodeBlob(const char* p, const char* end, bool bThrow = true) { |
| 521 |
if (!bThrow && p >= end) { |
| 522 |
const _Blob blob = { p, end }; |
| 523 |
return blob; |
| 524 |
} |
| 525 |
size_t sz = 0; |
| 526 |
for (; true; ++p) { |
| 527 |
if (p >= end) |
| 528 |
throw Exception("Decode Error: Missing blob"); |
| 529 |
const char& c = *p; |
| 530 |
if (c == ':') break; |
| 531 |
if (c < '0' || c > '9') |
| 532 |
throw Exception("Decode Error: Missing blob size"); |
| 533 |
sz *= 10; |
| 534 |
sz += size_t(c - '0'); |
| 535 |
} |
| 536 |
++p; |
| 537 |
if (p + sz > end) |
| 538 |
throw Exception("Decode Error: Premature end of blob"); |
| 539 |
const _Blob blob = { p, p + sz }; |
| 540 |
return blob; |
| 541 |
} |
| 542 |
|
| 543 |
template<typename T_int> |
| 544 |
static T_int _popIntBlob(const char*& p, const char* end) { |
| 545 |
_Blob blob = _decodeBlob(p, end); |
| 546 |
p = blob.p; |
| 547 |
end = blob.end; |
| 548 |
|
| 549 |
T_int sign = 1; |
| 550 |
T_int i = 0; |
| 551 |
if (p >= end) |
| 552 |
throw Exception("Decode Error: premature end of int blob"); |
| 553 |
if (*p == '-') { |
| 554 |
sign = -1; |
| 555 |
++p; |
| 556 |
} |
| 557 |
for (; p < end; ++p) { |
| 558 |
const char& c = *p; |
| 559 |
if (c < '0' || c > '9') |
| 560 |
throw Exception("Decode Error: Invalid int blob format"); |
| 561 |
i *= 10; |
| 562 |
i += size_t(c - '0'); |
| 563 |
} |
| 564 |
return i * sign; |
| 565 |
} |
| 566 |
|
| 567 |
template<typename T_int> |
| 568 |
static void _popIntBlob(const char*& p, const char* end, RawData& rawData) { |
| 569 |
const T_int i = _popIntBlob<T_int>(p, end); |
| 570 |
*(T_int*)&rawData[0] = i; |
| 571 |
} |
| 572 |
|
| 573 |
template<typename T_real> |
| 574 |
static T_real _popRealBlob(const char*& p, const char* end) { |
| 575 |
_Blob blob = _decodeBlob(p, end); |
| 576 |
p = blob.p; |
| 577 |
end = blob.end; |
| 578 |
|
| 579 |
if (p >= end || (end - p) < 1) |
| 580 |
throw Exception("Decode Error: premature end of real blob"); |
| 581 |
|
| 582 |
String s(p, size_t(end - p)); |
| 583 |
|
| 584 |
T_real r; |
| 585 |
if (sizeof(T_real) <= sizeof(double)) |
| 586 |
r = atof(s.c_str()); |
| 587 |
else |
| 588 |
assert(false /* unknown real type */); |
| 589 |
|
| 590 |
p += s.length(); |
| 591 |
|
| 592 |
return r; |
| 593 |
} |
| 594 |
|
| 595 |
template<typename T_real> |
| 596 |
static void _popRealBlob(const char*& p, const char* end, RawData& rawData) { |
| 597 |
const T_real r = _popRealBlob<T_real>(p, end); |
| 598 |
*(T_real*)&rawData[0] = r; |
| 599 |
} |
| 600 |
|
| 601 |
static String _popStringBlob(const char*& p, const char* end) { |
| 602 |
_Blob blob = _decodeBlob(p, end); |
| 603 |
p = blob.p; |
| 604 |
end = blob.end; |
| 605 |
if (end - p < 0) |
| 606 |
throw Exception("Decode Error: missing String blob"); |
| 607 |
String s; |
| 608 |
const size_t sz = end - p; |
| 609 |
s.resize(sz); |
| 610 |
memcpy(&s[0], p, sz); |
| 611 |
p += sz; |
| 612 |
return s; |
| 613 |
} |
| 614 |
|
| 615 |
static time_t _popTimeBlob(const char*& p, const char* end) { |
| 616 |
const uint64_t i = _popIntBlob<uint64_t>(p, end); |
| 617 |
return (time_t) i; |
| 618 |
} |
| 619 |
|
| 620 |
DataType _popDataTypeBlob(const char*& p, const char* end) { |
| 621 |
_Blob blob = _decodeBlob(p, end); |
| 622 |
p = blob.p; |
| 623 |
end = blob.end; |
| 624 |
|
| 625 |
DataType type; |
| 626 |
type.m_baseTypeName = _popStringBlob(p, end); |
| 627 |
type.m_customTypeName = _popStringBlob(p, end); |
| 628 |
type.m_size = _popIntBlob<int>(p, end); |
| 629 |
type.m_isPointer = _popIntBlob<bool>(p, end); |
| 630 |
return type; |
| 631 |
} |
| 632 |
|
| 633 |
static UID _popUIDBlob(const char*& p, const char* end) { |
| 634 |
_Blob blob = _decodeBlob(p, end); |
| 635 |
p = blob.p; |
| 636 |
end = blob.end; |
| 637 |
|
| 638 |
if (p >= end) |
| 639 |
throw Exception("Decode Error: premature end of UID blob"); |
| 640 |
|
| 641 |
const ID id = (ID) _popIntBlob<size_t>(p, end); |
| 642 |
const size_t size = _popIntBlob<size_t>(p, end); |
| 643 |
|
| 644 |
const UID uid = { id, size }; |
| 645 |
return uid; |
| 646 |
} |
| 647 |
|
| 648 |
static UIDChain _popUIDChainBlob(const char*& p, const char* end) { |
| 649 |
_Blob blob = _decodeBlob(p, end); |
| 650 |
p = blob.p; |
| 651 |
end = blob.end; |
| 652 |
|
| 653 |
UIDChain chain; |
| 654 |
while (p < end) { |
| 655 |
const UID uid = _popUIDBlob(p, end); |
| 656 |
chain.push_back(uid); |
| 657 |
} |
| 658 |
assert(!chain.empty()); |
| 659 |
return chain; |
| 660 |
} |
| 661 |
|
| 662 |
static Member _popMemberBlob(const char*& p, const char* end) { |
| 663 |
_Blob blob = _decodeBlob(p, end, false); |
| 664 |
p = blob.p; |
| 665 |
end = blob.end; |
| 666 |
|
| 667 |
Member m; |
| 668 |
if (p >= end) return m; |
| 669 |
|
| 670 |
m.m_uid = _popUIDBlob(p, end); |
| 671 |
m.m_offset = _popIntBlob<size_t>(p, end); |
| 672 |
m.m_name = _popStringBlob(p, end); |
| 673 |
m.m_type = _popDataTypeBlob(p, end); |
| 674 |
assert(m.type()); |
| 675 |
assert(!m.name().empty()); |
| 676 |
assert(m.uid().isValid()); |
| 677 |
return m; |
| 678 |
} |
| 679 |
|
| 680 |
static std::vector<Member> _popMembersBlob(const char*& p, const char* end) { |
| 681 |
_Blob blob = _decodeBlob(p, end, false); |
| 682 |
p = blob.p; |
| 683 |
end = blob.end; |
| 684 |
|
| 685 |
std::vector<Member> members; |
| 686 |
while (p < end) { |
| 687 |
const Member member = _popMemberBlob(p, end); |
| 688 |
if (member) |
| 689 |
members.push_back(member); |
| 690 |
else |
| 691 |
break; |
| 692 |
} |
| 693 |
return members; |
| 694 |
} |
| 695 |
|
| 696 |
static void _popPrimitiveValue(const char*& p, const char* end, Object& obj) { |
| 697 |
const DataType& type = obj.type(); |
| 698 |
if (type.isPrimitive() && !type.isPointer()) { |
| 699 |
obj.m_data.resize(type.size()); |
| 700 |
if (type.isInteger() || type.isEnum()) { |
| 701 |
if (type.isSigned()) { |
| 702 |
if (type.size() == 1) |
| 703 |
_popIntBlob<int8_t>(p, end, obj.m_data); |
| 704 |
else if (type.size() == 2) |
| 705 |
_popIntBlob<int16_t>(p, end, obj.m_data); |
| 706 |
else if (type.size() == 4) |
| 707 |
_popIntBlob<int32_t>(p, end, obj.m_data); |
| 708 |
else if (type.size() == 8) |
| 709 |
_popIntBlob<int64_t>(p, end, obj.m_data); |
| 710 |
else |
| 711 |
assert(false /* unknown signed int type size */); |
| 712 |
} else { |
| 713 |
if (type.size() == 1) |
| 714 |
_popIntBlob<uint8_t>(p, end, obj.m_data); |
| 715 |
else if (type.size() == 2) |
| 716 |
_popIntBlob<uint16_t>(p, end, obj.m_data); |
| 717 |
else if (type.size() == 4) |
| 718 |
_popIntBlob<uint32_t>(p, end, obj.m_data); |
| 719 |
else if (type.size() == 8) |
| 720 |
_popIntBlob<uint64_t>(p, end, obj.m_data); |
| 721 |
else |
| 722 |
assert(false /* unknown unsigned int type size */); |
| 723 |
} |
| 724 |
} else if (type.isReal()) { |
| 725 |
if (type.size() == sizeof(float)) |
| 726 |
_popRealBlob<float>(p, end, obj.m_data); |
| 727 |
else if (type.size() == sizeof(double)) |
| 728 |
_popRealBlob<double>(p, end, obj.m_data); |
| 729 |
else |
| 730 |
assert(false /* unknown floating point type */); |
| 731 |
} else if (type.isBool()) { |
| 732 |
_popIntBlob<uint8_t>(p, end, obj.m_data); |
| 733 |
} else { |
| 734 |
assert(false /* unknown primitive type */); |
| 735 |
} |
| 736 |
|
| 737 |
} else { |
| 738 |
// don't whine if the empty blob was not added on encoder side |
| 739 |
_Blob blob = _decodeBlob(p, end, false); |
| 740 |
p = blob.p; |
| 741 |
end = blob.end; |
| 742 |
} |
| 743 |
} |
| 744 |
|
| 745 |
static Object _popObjectBlob(const char*& p, const char* end) { |
| 746 |
_Blob blob = _decodeBlob(p, end, false); |
| 747 |
p = blob.p; |
| 748 |
end = blob.end; |
| 749 |
|
| 750 |
Object obj; |
| 751 |
if (p >= end) return obj; |
| 752 |
|
| 753 |
obj.m_type = _popDataTypeBlob(p, end); |
| 754 |
obj.m_version = _popIntBlob<Version>(p, end); |
| 755 |
obj.m_minVersion = _popIntBlob<Version>(p, end); |
| 756 |
obj.m_uid = _popUIDChainBlob(p, end); |
| 757 |
obj.m_members = _popMembersBlob(p, end); |
| 758 |
_popPrimitiveValue(p, end, obj); |
| 759 |
assert(obj.type()); |
| 760 |
return obj; |
| 761 |
} |
| 762 |
|
| 763 |
void Archive::_popObjectsBlob(const char*& p, const char* end) { |
| 764 |
_Blob blob = _decodeBlob(p, end, false); |
| 765 |
p = blob.p; |
| 766 |
end = blob.end; |
| 767 |
|
| 768 |
if (p >= end) |
| 769 |
throw Exception("Decode Error: Premature end of objects blob"); |
| 770 |
|
| 771 |
while (true) { |
| 772 |
const Object obj = _popObjectBlob(p, end); |
| 773 |
if (!obj) break; |
| 774 |
m_allObjects[obj.uid()] = obj; |
| 775 |
} |
| 776 |
} |
| 777 |
|
| 778 |
void Archive::_popRootBlob(const char*& p, const char* end) { |
| 779 |
_Blob blob = _decodeBlob(p, end, false); |
| 780 |
p = blob.p; |
| 781 |
end = blob.end; |
| 782 |
|
| 783 |
if (p >= end) |
| 784 |
throw Exception("Decode Error: Premature end of root blob"); |
| 785 |
|
| 786 |
// just in case this encoding format will be extended in future |
| 787 |
// (currently not used) |
| 788 |
const int formatMinorVersion = _popIntBlob<int>(p, end); |
| 789 |
|
| 790 |
m_root = _popUIDBlob(p, end); |
| 791 |
if (!m_root) |
| 792 |
throw Exception("Decode Error: No root object"); |
| 793 |
|
| 794 |
_popObjectsBlob(p, end); |
| 795 |
if (!m_allObjects[m_root]) |
| 796 |
throw Exception("Decode Error: Missing declared root object"); |
| 797 |
|
| 798 |
m_name = _popStringBlob(p, end); |
| 799 |
m_comment = _popStringBlob(p, end); |
| 800 |
m_timeCreated = _popTimeBlob(p, end); |
| 801 |
m_timeModified = _popTimeBlob(p, end); |
| 802 |
} |
| 803 |
|
| 804 |
void Archive::decode(const RawData& data) { |
| 805 |
m_rawData = data; |
| 806 |
m_allObjects.clear(); |
| 807 |
m_isModified = false; |
| 808 |
m_timeCreated = m_timeModified = LIBGIG_EPOCH_TIME; |
| 809 |
const char* p = (const char*) &data[0]; |
| 810 |
const char* end = p + data.size(); |
| 811 |
if (memcmp(p, MAGIC_START, std::min(strlen(MAGIC_START), data.size()))) |
| 812 |
throw Exception("Decode Error: Magic start missing!"); |
| 813 |
p += strlen(MAGIC_START); |
| 814 |
_popRootBlob(p, end); |
| 815 |
} |
| 816 |
|
| 817 |
void Archive::decode(const uint8_t* data, size_t size) { |
| 818 |
RawData rawData; |
| 819 |
rawData.resize(size); |
| 820 |
memcpy(&rawData[0], data, size); |
| 821 |
decode(rawData); |
| 822 |
} |
| 823 |
|
| 824 |
const RawData& Archive::rawData() { |
| 825 |
if (m_isModified) encode(); |
| 826 |
return m_rawData; |
| 827 |
} |
| 828 |
|
| 829 |
String Archive::rawDataFormat() const { |
| 830 |
return MAGIC_START; |
| 831 |
} |
| 832 |
|
| 833 |
bool Archive::isModified() const { |
| 834 |
return m_isModified; |
| 835 |
} |
| 836 |
|
| 837 |
void Archive::clear() { |
| 838 |
m_allObjects.clear(); |
| 839 |
m_operation = OPERATION_NONE; |
| 840 |
m_root = NO_UID; |
| 841 |
m_rawData.clear(); |
| 842 |
m_isModified = false; |
| 843 |
m_timeCreated = m_timeModified = LIBGIG_EPOCH_TIME; |
| 844 |
} |
| 845 |
|
| 846 |
String Archive::name() const { |
| 847 |
return m_name; |
| 848 |
} |
| 849 |
|
| 850 |
void Archive::setName(String name) { |
| 851 |
if (m_name == name) return; |
| 852 |
m_name = name; |
| 853 |
m_isModified = true; |
| 854 |
} |
| 855 |
|
| 856 |
String Archive::comment() const { |
| 857 |
return m_comment; |
| 858 |
} |
| 859 |
|
| 860 |
void Archive::setComment(String comment) { |
| 861 |
if (m_comment == comment) return; |
| 862 |
m_comment = comment; |
| 863 |
m_isModified = true; |
| 864 |
} |
| 865 |
|
| 866 |
static tm _convertTimeStamp(const time_t& time, time_base_t base) { |
| 867 |
tm* pTm; |
| 868 |
switch (base) { |
| 869 |
case LOCAL_TIME: |
| 870 |
pTm = localtime(&time); |
| 871 |
break; |
| 872 |
case UTC_TIME: |
| 873 |
pTm = gmtime(&time); |
| 874 |
break; |
| 875 |
default: |
| 876 |
throw Exception("Time stamp with unknown time base (" + ToString((int64_t)base) + ") requested"); |
| 877 |
} |
| 878 |
if (!pTm) |
| 879 |
throw Exception("Failed assembling time stamp structure"); |
| 880 |
return *pTm; |
| 881 |
} |
| 882 |
|
| 883 |
time_t Archive::timeStampCreated() const { |
| 884 |
return m_timeCreated; |
| 885 |
} |
| 886 |
|
| 887 |
time_t Archive::timeStampModified() const { |
| 888 |
return m_timeModified; |
| 889 |
} |
| 890 |
|
| 891 |
tm Archive::dateTimeCreated(time_base_t base) const { |
| 892 |
return _convertTimeStamp(m_timeCreated, base); |
| 893 |
} |
| 894 |
|
| 895 |
tm Archive::dateTimeModified(time_base_t base) const { |
| 896 |
return _convertTimeStamp(m_timeModified, base); |
| 897 |
} |
| 898 |
|
| 899 |
void Archive::removeMember(Object& parent, const Member& member) { |
| 900 |
parent.remove(member); |
| 901 |
m_isModified = true; |
| 902 |
} |
| 903 |
|
| 904 |
void Archive::remove(const Object& obj) { |
| 905 |
//FIXME: Should traverse from root object and remove all members associated with this object |
| 906 |
if (!obj.uid()) return; |
| 907 |
m_allObjects.erase(obj.uid()); |
| 908 |
m_isModified = true; |
| 909 |
} |
| 910 |
|
| 911 |
Object& Archive::objectByUID(const UID& uid) { |
| 912 |
return m_allObjects[uid]; |
| 913 |
} |
| 914 |
|
| 915 |
void Archive::setEnumValue(Object& object, uint64_t value) { |
| 916 |
if (!object) return; |
| 917 |
if (!object.type().isEnum()) |
| 918 |
throw Exception("Not an enum data type"); |
| 919 |
Object* pObject = &object; |
| 920 |
if (object.type().isPointer()) { |
| 921 |
Object& obj = objectByUID(object.uid(1)); |
| 922 |
if (!obj) return; |
| 923 |
pObject = &obj; |
| 924 |
} |
| 925 |
const int nativeEnumSize = sizeof(enum operation_t); |
| 926 |
DataType& type = const_cast<DataType&>( pObject->type() ); |
| 927 |
// original serializer ("sender") might have had a different word size |
| 928 |
// than this machine, adjust type object in this case |
| 929 |
if (type.size() != nativeEnumSize) { |
| 930 |
type.m_size = nativeEnumSize; |
| 931 |
} |
| 932 |
pObject->m_data.resize(type.size()); |
| 933 |
void* ptr = &pObject->m_data[0]; |
| 934 |
if (type.size() == 1) |
| 935 |
*(uint8_t*)ptr = (uint8_t)value; |
| 936 |
else if (type.size() == 2) |
| 937 |
*(uint16_t*)ptr = (uint16_t)value; |
| 938 |
else if (type.size() == 4) |
| 939 |
*(uint32_t*)ptr = (uint32_t)value; |
| 940 |
else if (type.size() == 8) |
| 941 |
*(uint64_t*)ptr = (uint64_t)value; |
| 942 |
else |
| 943 |
assert(false /* unknown enum type size */); |
| 944 |
m_isModified = true; |
| 945 |
} |
| 946 |
|
| 947 |
void Archive::setIntValue(Object& object, int64_t value) { |
| 948 |
if (!object) return; |
| 949 |
if (!object.type().isInteger()) |
| 950 |
throw Exception("Not an integer data type"); |
| 951 |
Object* pObject = &object; |
| 952 |
if (object.type().isPointer()) { |
| 953 |
Object& obj = objectByUID(object.uid(1)); |
| 954 |
if (!obj) return; |
| 955 |
pObject = &obj; |
| 956 |
} |
| 957 |
const DataType& type = pObject->type(); |
| 958 |
pObject->m_data.resize(type.size()); |
| 959 |
void* ptr = &pObject->m_data[0]; |
| 960 |
if (type.isSigned()) { |
| 961 |
if (type.size() == 1) |
| 962 |
*(int8_t*)ptr = (int8_t)value; |
| 963 |
else if (type.size() == 2) |
| 964 |
*(int16_t*)ptr = (int16_t)value; |
| 965 |
else if (type.size() == 4) |
| 966 |
*(int32_t*)ptr = (int32_t)value; |
| 967 |
else if (type.size() == 8) |
| 968 |
*(int64_t*)ptr = (int64_t)value; |
| 969 |
else |
| 970 |
assert(false /* unknown signed int type size */); |
| 971 |
} else { |
| 972 |
if (type.size() == 1) |
| 973 |
*(uint8_t*)ptr = (uint8_t)value; |
| 974 |
else if (type.size() == 2) |
| 975 |
*(uint16_t*)ptr = (uint16_t)value; |
| 976 |
else if (type.size() == 4) |
| 977 |
*(uint32_t*)ptr = (uint32_t)value; |
| 978 |
else if (type.size() == 8) |
| 979 |
*(uint64_t*)ptr = (uint64_t)value; |
| 980 |
else |
| 981 |
assert(false /* unknown unsigned int type size */); |
| 982 |
} |
| 983 |
m_isModified = true; |
| 984 |
} |
| 985 |
|
| 986 |
void Archive::setRealValue(Object& object, double value) { |
| 987 |
if (!object) return; |
| 988 |
if (!object.type().isReal()) |
| 989 |
throw Exception("Not a real data type"); |
| 990 |
Object* pObject = &object; |
| 991 |
if (object.type().isPointer()) { |
| 992 |
Object& obj = objectByUID(object.uid(1)); |
| 993 |
if (!obj) return; |
| 994 |
pObject = &obj; |
| 995 |
} |
| 996 |
const DataType& type = pObject->type(); |
| 997 |
pObject->m_data.resize(type.size()); |
| 998 |
void* ptr = &pObject->m_data[0]; |
| 999 |
if (type.size() == sizeof(float)) |
| 1000 |
*(float*)ptr = (float)value; |
| 1001 |
else if (type.size() == sizeof(double)) |
| 1002 |
*(double*)ptr = (double)value; |
| 1003 |
else |
| 1004 |
assert(false /* unknown real type size */); |
| 1005 |
m_isModified = true; |
| 1006 |
} |
| 1007 |
|
| 1008 |
void Archive::setBoolValue(Object& object, bool value) { |
| 1009 |
if (!object) return; |
| 1010 |
if (!object.type().isBool()) |
| 1011 |
throw Exception("Not a bool data type"); |
| 1012 |
Object* pObject = &object; |
| 1013 |
if (object.type().isPointer()) { |
| 1014 |
Object& obj = objectByUID(object.uid(1)); |
| 1015 |
if (!obj) return; |
| 1016 |
pObject = &obj; |
| 1017 |
} |
| 1018 |
const DataType& type = pObject->type(); |
| 1019 |
pObject->m_data.resize(type.size()); |
| 1020 |
bool* ptr = (bool*)&pObject->m_data[0]; |
| 1021 |
*ptr = value; |
| 1022 |
m_isModified = true; |
| 1023 |
} |
| 1024 |
|
| 1025 |
void Archive::setAutoValue(Object& object, String value) { |
| 1026 |
if (!object) return; |
| 1027 |
const DataType& type = object.type(); |
| 1028 |
if (type.isInteger()) |
| 1029 |
setIntValue(object, atoll(value.c_str())); |
| 1030 |
else if (type.isReal()) |
| 1031 |
setRealValue(object, atof(value.c_str())); |
| 1032 |
else if (type.isBool()) |
| 1033 |
setBoolValue(object, atof(value.c_str())); |
| 1034 |
else if (type.isEnum()) |
| 1035 |
setEnumValue(object, atoll(value.c_str())); |
| 1036 |
else |
| 1037 |
throw Exception("Not a primitive data type"); |
| 1038 |
} |
| 1039 |
|
| 1040 |
String Archive::valueAsString(const Object& object) { |
| 1041 |
if (!object) |
| 1042 |
throw Exception("Invalid object"); |
| 1043 |
if (object.type().isClass()) |
| 1044 |
throw Exception("Object is class type"); |
| 1045 |
const Object* pObject = &object; |
| 1046 |
if (object.type().isPointer()) { |
| 1047 |
const Object& obj = objectByUID(object.uid(1)); |
| 1048 |
if (!obj) return ""; |
| 1049 |
pObject = &obj; |
| 1050 |
} |
| 1051 |
return _primitiveObjectValueToString(*pObject); |
| 1052 |
} |
| 1053 |
|
| 1054 |
int64_t Archive::valueAsInt(const Object& object) { |
| 1055 |
if (!object) |
| 1056 |
throw Exception("Invalid object"); |
| 1057 |
if (!object.type().isInteger() && !object.type().isEnum()) |
| 1058 |
throw Exception("Object is neither an integer nor an enum"); |
| 1059 |
const Object* pObject = &object; |
| 1060 |
if (object.type().isPointer()) { |
| 1061 |
const Object& obj = objectByUID(object.uid(1)); |
| 1062 |
if (!obj) return 0; |
| 1063 |
pObject = &obj; |
| 1064 |
} |
| 1065 |
return _primitiveObjectValueToNumber<int64_t>(*pObject); |
| 1066 |
} |
| 1067 |
|
| 1068 |
double Archive::valueAsReal(const Object& object) { |
| 1069 |
if (!object) |
| 1070 |
throw Exception("Invalid object"); |
| 1071 |
if (!object.type().isReal()) |
| 1072 |
throw Exception("Object is not an real type"); |
| 1073 |
const Object* pObject = &object; |
| 1074 |
if (object.type().isPointer()) { |
| 1075 |
const Object& obj = objectByUID(object.uid(1)); |
| 1076 |
if (!obj) return 0; |
| 1077 |
pObject = &obj; |
| 1078 |
} |
| 1079 |
return _primitiveObjectValueToNumber<double>(*pObject); |
| 1080 |
} |
| 1081 |
|
| 1082 |
bool Archive::valueAsBool(const Object& object) { |
| 1083 |
if (!object) |
| 1084 |
throw Exception("Invalid object"); |
| 1085 |
if (!object.type().isBool()) |
| 1086 |
throw Exception("Object is not a bool"); |
| 1087 |
const Object* pObject = &object; |
| 1088 |
if (object.type().isPointer()) { |
| 1089 |
const Object& obj = objectByUID(object.uid(1)); |
| 1090 |
if (!obj) return 0; |
| 1091 |
pObject = &obj; |
| 1092 |
} |
| 1093 |
return _primitiveObjectValueToNumber<bool>(*pObject); |
| 1094 |
} |
| 1095 |
|
| 1096 |
// *************** Archive::Syncer *************** |
| 1097 |
// * |
| 1098 |
|
| 1099 |
Archive::Syncer::Syncer(Archive& dst, Archive& src) |
| 1100 |
: m_dst(dst), m_src(src) |
| 1101 |
{ |
| 1102 |
const Object srcRootObj = src.rootObject(); |
| 1103 |
const Object dstRootObj = dst.rootObject(); |
| 1104 |
if (!srcRootObj) |
| 1105 |
throw Exception("No source root object!"); |
| 1106 |
if (!dstRootObj) |
| 1107 |
throw Exception("Expected destination root object not found!"); |
| 1108 |
syncObject(dstRootObj, srcRootObj); |
| 1109 |
} |
| 1110 |
|
| 1111 |
void Archive::Syncer::syncPrimitive(const Object& dstObj, const Object& srcObj) { |
| 1112 |
assert(srcObj.rawData().size() == dstObj.type().size()); |
| 1113 |
void* pDst = (void*)dstObj.uid().id; |
| 1114 |
memcpy(pDst, &srcObj.rawData()[0], dstObj.type().size()); |
| 1115 |
} |
| 1116 |
|
| 1117 |
void Archive::Syncer::syncPointer(const Object& dstObj, const Object& srcObj) { |
| 1118 |
assert(dstObj.type().isPointer()); |
| 1119 |
assert(dstObj.type() == srcObj.type()); |
| 1120 |
const Object& pointedDstObject = m_dst.m_allObjects[dstObj.uid(1)]; |
| 1121 |
const Object& pointedSrcObject = m_src.m_allObjects[srcObj.uid(1)]; |
| 1122 |
syncObject(pointedDstObject, pointedSrcObject); |
| 1123 |
} |
| 1124 |
|
| 1125 |
void Archive::Syncer::syncObject(const Object& dstObj, const Object& srcObj) { |
| 1126 |
if (!dstObj || !srcObj) return; // end of recursion |
| 1127 |
if (!dstObj.isVersionCompatibleTo(srcObj)) |
| 1128 |
throw Exception("Version incompatible (destination version " + |
| 1129 |
ToString(dstObj.version()) + " [min. version " + |
| 1130 |
ToString(dstObj.minVersion()) + "], source version " + |
| 1131 |
ToString(srcObj.version()) + " [min. version " + |
| 1132 |
ToString(srcObj.minVersion()) + "])"); |
| 1133 |
if (dstObj.type() != srcObj.type()) |
| 1134 |
throw Exception("Incompatible data structure type (destination type " + |
| 1135 |
dstObj.type().asLongDescr() + " vs. source type " + |
| 1136 |
srcObj.type().asLongDescr() + ")"); |
| 1137 |
|
| 1138 |
// prevent syncing this object again, and thus also prevent endless |
| 1139 |
// loop on data structures with cyclic relations |
| 1140 |
m_dst.m_allObjects.erase(dstObj.uid()); |
| 1141 |
|
| 1142 |
if (dstObj.type().isPrimitive() && !dstObj.type().isPointer()) { |
| 1143 |
syncPrimitive(dstObj, srcObj); |
| 1144 |
return; // end of recursion |
| 1145 |
} |
| 1146 |
|
| 1147 |
if (dstObj.type().isPointer()) { |
| 1148 |
syncPointer(dstObj, srcObj); |
| 1149 |
return; |
| 1150 |
} |
| 1151 |
|
| 1152 |
assert(dstObj.type().isClass()); |
| 1153 |
for (int iMember = 0; iMember < srcObj.members().size(); ++iMember) { |
| 1154 |
const Member& srcMember = srcObj.members()[iMember]; |
| 1155 |
Member dstMember = dstMemberMatching(dstObj, srcObj, srcMember); |
| 1156 |
if (!dstMember) |
| 1157 |
throw Exception("Expected member missing in destination object"); |
| 1158 |
syncMember(dstMember, srcMember); |
| 1159 |
} |
| 1160 |
} |
| 1161 |
|
| 1162 |
Member Archive::Syncer::dstMemberMatching(const Object& dstObj, const Object& srcObj, const Member& srcMember) { |
| 1163 |
Member dstMember = dstObj.memberNamed(srcMember.name()); |
| 1164 |
if (dstMember) |
| 1165 |
return (dstMember.type() == srcMember.type()) ? dstMember : Member(); |
| 1166 |
std::vector<Member> members = dstObj.membersOfType(srcMember.type()); |
| 1167 |
if (members.size() <= 0) |
| 1168 |
return Member(); |
| 1169 |
if (members.size() == 1) |
| 1170 |
return members[0]; |
| 1171 |
for (int i = 0; i < members.size(); ++i) |
| 1172 |
if (members[i].offset() == srcMember.offset()) |
| 1173 |
return members[i]; |
| 1174 |
const int srcSeqNr = srcObj.sequenceIndexOf(srcMember); |
| 1175 |
assert(srcSeqNr >= 0); // should never happen, otherwise there is a bug |
| 1176 |
for (int i = 0; i < members.size(); ++i) { |
| 1177 |
const int dstSeqNr = dstObj.sequenceIndexOf(members[i]); |
| 1178 |
if (dstSeqNr == srcSeqNr) |
| 1179 |
return members[i]; |
| 1180 |
} |
| 1181 |
return Member(); // give up! |
| 1182 |
} |
| 1183 |
|
| 1184 |
void Archive::Syncer::syncMember(const Member& dstMember, const Member& srcMember) { |
| 1185 |
assert(dstMember && srcMember); |
| 1186 |
assert(dstMember.type() == srcMember.type()); |
| 1187 |
const Object dstObj = m_dst.m_allObjects[dstMember.uid()]; |
| 1188 |
const Object srcObj = m_src.m_allObjects[srcMember.uid()]; |
| 1189 |
syncObject(dstObj, srcObj); |
| 1190 |
} |
| 1191 |
|
| 1192 |
// *************** Exception *************** |
| 1193 |
// * |
| 1194 |
|
| 1195 |
void Exception::PrintMessage() { |
| 1196 |
std::cout << "Serialization::Exception: " << Message << std::endl; |
| 1197 |
} |
| 1198 |
|
| 1199 |
} // namespace Serialization |
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