mqn2mps: field.cc Source File

00001 /*
00002  *  Copyright 2007 Martin von Gagern
00003  *
00004  *
00005  *  This file is part of mqn2mps.
00006  *
00007  *  mqn2mps is free software; you can redistribute it and/or modify
00008  *  it under the terms of the GNU General Public License as published by
00009  *  the Free Software Foundation; either version 3 of the License, or
00010  *  (at your option) any later version.
00011  *
00012  *  mqn2mps is distributed in the hope that it will be useful,
00013  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
00014  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00015  *  GNU General Public License for more details.
00016  *
00017  *  You should have received a copy of the GNU General Public License
00018  *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
00019  */
00020 
00021 
00022 #include <string>
00023 #include <vector>
00024 #include <utility>
00025 
00026 #include "rational.hh"
00027 #include "field.hh"
00028 
00029 /**
00030  * @file
00031  * Implementation of class field.
00032  */
00033 
00034 /**
00035  * Default constructor.
00036  * Members will be initialized to their default values.
00037  */
00038 field::field() : name(), values() {
00039 }
00040 
00041 /**
00042  * Constructor for use by the parser.
00043  * As the parser represents most objects through pointers, this
00044  * version of the constructor accepts pointers, and takes care of
00045  * freeing the memory of the objects pointed to.
00046  *
00047  * @param n the name of the field.
00048  * @param v the sequence of matrix elements.
00049  */
00050 field::field(std::string* n, std::vector<rational>* v) : name(*n), values() {
00051   values.swap(*v);
00052   delete n;
00053   delete v;
00054 }
00055 
00056 /**
00057  * Swap two fields.
00058  * This method implements the optimized swapping operation, which is
00059  * used by the std::swap(field&, field&) function in generic code.
00060  *
00061  * @param other the other field objects with which this one should be
00062  *              swapped.
00063  */
00064 void field::swap(field& other) {
00065   std::swap(name, other.name);
00066   std::swap(values, other.values);
00067 }