janwas
4663ac0fe7
the old debug_assert always ran and tested the expression, which slows down release builds. wrapping them in #ifndef NDEBUG is clumsy. the new ASSERT behaves like assert and ENSURE like the old debug_assert. Let's change any time-critical but not-super-important ENSURE to ASSERT to speed up release builds. (already done in bits.h and unique_range.h) This was SVN commit r9362.
143 lines
3.3 KiB
C++
143 lines
3.3 KiB
C++
/* Copyright (C) 2010 Wildfire Games.
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* This file is part of 0 A.D.
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*
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* 0 A.D. 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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* 0 A.D. 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 0 A.D. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "precompiled.h"
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#include "CommandProc.h"
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#include <cassert>
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#include <algorithm>
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//////////////////////////////////////////////////////////////////////////
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template<typename T> T next_it(T x) { T t = x; return ++t; }
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template<typename T> void delete_fn(T* v) { delete v; }
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//////////////////////////////////////////////////////////////////////////
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using namespace AtlasMessage;
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namespace AtlasMessage {
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CommandProc& GetCommandProc()
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{
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static CommandProc commandProc;
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return commandProc;
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}
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cmdHandlers& GetCmdHandlers()
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{
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static cmdHandlers h;
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return h;
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}
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}
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CommandProc::CommandProc()
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{
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// Start the list with a NULL, so m_CurrentCommand can point at
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// something even when the command stack is empty
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m_Commands.push_back(NULL);
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m_CurrentCommand = m_Commands.begin();
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}
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CommandProc::~CommandProc()
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{
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// Make sure Destroy has been called before now (to avoid
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// problems from the destruction order of static variables)
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ENSURE(!m_Commands.size());
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}
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void CommandProc::Destroy()
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{
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std::for_each(m_Commands.begin(), m_Commands.end(), delete_fn<Command>);
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m_Commands.clear();
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}
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void CommandProc::Submit(Command* cmd)
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{
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// If some commands have been undone at the time we insert this new one,
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// delete and remove them all.
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std::for_each(next_it(m_CurrentCommand), m_Commands.end(), delete_fn<Command>);
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m_Commands.erase(next_it(m_CurrentCommand), m_Commands.end());
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assert(next_it(m_CurrentCommand) == m_Commands.end());
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m_CurrentCommand = m_Commands.insert(next_it(m_CurrentCommand), cmd);
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(*m_CurrentCommand)->Do();
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}
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void CommandProc::Undo()
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{
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if (m_CurrentCommand != m_Commands.begin())
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{
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(*m_CurrentCommand)->Undo();
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--m_CurrentCommand;
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}
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}
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void CommandProc::Redo()
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{
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if (next_it(m_CurrentCommand) != m_Commands.end())
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{
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++m_CurrentCommand;
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(*m_CurrentCommand)->Redo();
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}
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}
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void CommandProc::Merge()
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{
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if (m_CurrentCommand == m_Commands.begin())
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{
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debug_warn(L"Merge illogic: no commands");
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return;
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}
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if (next_it(m_CurrentCommand) != m_Commands.end())
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{
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debug_warn(L"Merge illogic: not at stack top");
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return;
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}
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cmdIt prev = m_CurrentCommand;
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--prev;
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if (prev == m_Commands.begin())
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{
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debug_warn(L"Merge illogic: only 1 command");
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return;
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}
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if ((*prev)->GetType() != (*m_CurrentCommand)->GetType())
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{
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const char* a = (*prev)->GetType();
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const char* b = (*m_CurrentCommand)->GetType();
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debug_printf(L"[incompatible: %hs -> %hs]\n", a, b);
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debug_warn(L"Merge illogic: incompatible command");
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return;
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}
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(*m_CurrentCommand)->Merge(*prev);
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delete *m_CurrentCommand;
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m_Commands.erase(m_CurrentCommand);
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m_CurrentCommand = prev;
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}
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