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////////////////////////////////////////////////////////////////////////////////
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// This file is part of Toolkit for Conceptual Modeling (TCM).
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// (c) copyright 1996, Vrije Universiteit Amsterdam.
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// Author: Frank Dehne (frank@cs.vu.nl).
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// TCM 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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// TCM 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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// You should have received a copy of the GNU General Public License
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// along with TCM; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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////////////////////////////////////////////////////////////////////////////////
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#include "connectionstart.h"
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ConnectionStart::ConnectionStart(SNGraph *g, Subject *n1, Subject *n2):
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bool ConnectionStart::SetConstraint(const string *s) {
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// empty constraint is allowed
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if (*s == "" || ParseCardConstraint(s)) {
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string cons = ::cardconstraint_constraint;
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return C1Edge::SetConstraint(&cons);
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bool ConnectionStart::ParseCardConstraint(const string *str) {
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YY_BUFFER_STATE y = ::cardconstraint_scan_string(str->getstr());
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strcpy(::cardconstraint_constraint, "");
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bool b = !cardconstraintparse();
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cardconstraint_delete_buffer(y);