d21ceb4a23
it is too easy too shoot yourself in the foot with it, other smart pointers also don't allow such assignments. If you do want to assign to a RefCount pointer, use reset(). ps: assignment between two RefCounts remains possible, of course.
156 lines
4.7 KiB
C++
156 lines
4.7 KiB
C++
// LogicCommands.cc for FbTk
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// Copyright (c) 2007 Fluxbox Team (fluxgen at fluxbox dot org)
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//
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the "Software"),
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// to deal in the Software without restriction, including without limitation
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// the rights to use, copy, modify, merge, publish, distribute, sublicense,
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// and/or sell copies of the Software, and to permit persons to whom the
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// Software is furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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// DEALINGS IN THE SOFTWARE.
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#include "LogicCommands.hh"
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#include "CommandParser.hh"
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#include "StringUtil.hh"
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#include <vector>
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using FbTk::StringUtil::removeFirstWhitespace;
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using FbTk::StringUtil::toLower;
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using std::string;
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namespace FbTk {
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namespace {
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template <typename M>
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M *addCommands(M *macro, const string &args, bool trusted) {
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std::string blah;
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std::vector<std::string> cmds;
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StringUtil::stringTokensBetween(cmds, args, blah, '{', '}');
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RefCount<Command<bool> > cmd(0);
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std::vector<std::string>::iterator it = cmds.begin(), it_end = cmds.end();
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for (; it != it_end; ++it) {
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cmd.reset( CommandParser<bool>::instance().parse(*it, trusted) );
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if (cmd)
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macro->add(cmd);
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}
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if (macro->size() > 0)
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return macro;
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delete macro;
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return 0;
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}
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Command<bool> *parseLogicCommand(const string &command, const string &args,
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bool trusted) {
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if (command == "not") {
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Command<bool> *boolcmd =
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CommandParser<bool>::instance().parse(args, trusted);
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if (!boolcmd)
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return 0;
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RefCount<Command<bool> > ref(boolcmd);
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return new NotCommand(ref);
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} else if (command == "and")
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return addCommands<AndCommand>(new AndCommand(), args, trusted);
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else if (command == "or")
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return addCommands<OrCommand>(new OrCommand(), args, trusted);
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else if (command == "xor")
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return addCommands<XorCommand>(new XorCommand(), args, trusted);
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return 0;
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}
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REGISTER_COMMAND_PARSER(not, parseLogicCommand, bool);
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REGISTER_COMMAND_PARSER(and, parseLogicCommand, bool);
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REGISTER_COMMAND_PARSER(or, parseLogicCommand, bool);
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REGISTER_COMMAND_PARSER(xor, parseLogicCommand, bool);
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} // end anonymous namespace
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Command<void> *IfCommand::parse(const std::string &command, const std::string &args,
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bool trusted) {
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std::string blah;
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std::vector<std::string> cmds;
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RefCount<Command<bool> > cond(0);
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RefCount<Command<void> > t(0), f(0);
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StringUtil::stringTokensBetween(cmds, args, blah, '{', '}');
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if (cmds.size() < 2)
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return 0;
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cond.reset( CommandParser<bool>::instance().parse(cmds[0], trusted) );
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if (cond == 0)
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return 0;
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t.reset( CommandParser<void>::instance().parse(cmds[1], trusted) );
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if (cmds.size() >= 3)
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f.reset( CommandParser<void>::instance().parse(cmds[2], trusted) );
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if (t == 0 && f == 0)
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return 0;
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return new IfCommand(cond, t, f);
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}
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REGISTER_COMMAND_PARSER(if, IfCommand::parse, void);
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REGISTER_COMMAND_PARSER(cond, IfCommand::parse, void);
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void OrCommand::add(RefCount<Command<bool> > &com) {
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m_commandlist.push_back(com);
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}
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size_t OrCommand::size() const {
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return m_commandlist.size();
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}
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bool OrCommand::execute() {
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for (size_t i=0; i < m_commandlist.size(); ++i) {
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if (m_commandlist[i]->execute())
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return true;
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}
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return false;
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}
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void AndCommand::add(RefCount<Command<bool> > &com) {
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m_commandlist.push_back(com);
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}
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size_t AndCommand::size() const {
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return m_commandlist.size();
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}
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bool AndCommand::execute() {
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for (size_t i=0; i < m_commandlist.size(); ++i) {
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if (!m_commandlist[i]->execute())
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return false;
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}
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return true;
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}
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void XorCommand::add(RefCount<Command<bool> > &com) {
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m_commandlist.push_back(com);
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}
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size_t XorCommand::size() const {
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return m_commandlist.size();
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}
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bool XorCommand::execute() {
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bool ret = false;
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for (size_t i=0; i < m_commandlist.size(); ++i)
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ret ^= m_commandlist[i]->execute();
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return ret;
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}
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} // end namespace FbTk
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