reorganizing class hierarchy

git-svn-id: svn://ttmath.org/publicrep/morm/trunk@1075 e52654a7-88a9-db11-a3e9-0013d4bc506e

src/flatconnector.h

@@ -0,0 +1,71 @@
+/*
+ * This file is a part of morm
+ * and is distributed under the 2-Clause BSD licence.
+ * Author: Tomasz Sowa <t.sowa@ttmath.org>
+ */
+
+/*
+ * Copyright (c) 2018, Tomasz Sowa
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifndef headerfile_morm_flatconnector
+#define headerfile_morm_flatconnector
+
+#include "flatexpression.h"
+#include "textstream/textstream.h"
+
+
+namespace morm
+{
+class Model;
+
+
+class FlatConnector
+{
+public:
+
+	FlatConnector();
+	virtual ~FlatConnector();
+
+	virtual void to_text(PT::TextStream & stream, Model & model);
+	virtual void set_expression(FlatExpression & expression);
+	virtual FlatExpression * get_expression();
+
+protected:
+
+	FlatExpression * flat_expression;
+	bool expression_allocated;
+
+	virtual void allocate_default_expression() = 0;
+	virtual void allocate_default_expression_if_needed();
+	virtual void deallocate_expression();
+
+};
+
+}
+
+#endif