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ifstatement.h
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ifstatement.h
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/*
* The Doomsday Engine Project -- libcore
*
* Copyright © 2004-2017 Jaakko Keränen <jaakko.keranen@iki.fi>
*
* @par License
* LGPL: http://www.gnu.org/licenses/lgpl.html
*
* <small>This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 3 of the License, or (at your
* option) any later version. This program is distributed in the hope that it
* will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
* General Public License for more details. You should have received a copy of
* the GNU Lesser General Public License along with this program; if not, see:
* http://www.gnu.org/licenses</small>
*/
#ifndef LIBCORE_IFSTATEMENT_H
#define LIBCORE_IFSTATEMENT_H
#include "../Statement"
#include "../Compound"
#include <list>
namespace de {
class Expression;
/**
* Branching statement for conditionally executing one or more compounds.
*
* @ingroup script
*/
class IfStatement : public Statement
{
public:
~IfStatement();
void clear();
/**
* Add a new branch to the statement.
*/
void newBranch();
/**
* Sets the condition expression of the latest branch.
*/
void setBranchCondition(Expression *expression);
/**
* Returns the compound of the latest branch.
*/
Compound &branchCompound();
/**
* Returns the else-compound of the statement.
*/
Compound &elseCompound() {
return _elseCompound;
}
void execute(Context &context) const;
// Implements ISerializable.
void operator >> (Writer &to) const;
void operator << (Reader &from);
private:
struct Branch {
Expression *condition;
Compound *compound;
Branch(Compound *c = 0) : condition(0), compound(c) {}
};
typedef std::list<Branch> Branches;
Branches _branches;
Compound _elseCompound;
};
} // namespace de
#endif /* LIBCORE_IFSTATEMENT_H */