From cfede9f44ea013702539da38bd5b809ae6b652e8 Mon Sep 17 00:00:00 2001
From: Joachim Klein <klein@tcs.inf.tu-dresden.de>
Date: Fri, 12 Oct 2018 14:25:31 +0200
Subject: [PATCH] imported patch
 MET-ModelExpressionTransformationIdentity.patch

---
 ...ModelExpressionTransformationIdentity.java | 101 ++++++++++++++++++
 1 file changed, 101 insertions(+)
 create mode 100644 prism/src/explicit/ModelExpressionTransformationIdentity.java

diff --git a/prism/src/explicit/ModelExpressionTransformationIdentity.java b/prism/src/explicit/ModelExpressionTransformationIdentity.java
new file mode 100644
index 00000000..01bab2a3
--- /dev/null
+++ b/prism/src/explicit/ModelExpressionTransformationIdentity.java
@@ -0,0 +1,101 @@
+//==============================================================================
+//	
+//	Copyright (c) 2015-
+//	Authors:
+//	* Joachim Klein <klein@tcs.inf.tu-dresden.de> (TU Dresden)
+//	
+//------------------------------------------------------------------------------
+//	
+//	This file is part of PRISM.
+//	
+//	PRISM is free software; you can redistribute it and/or modify
+//	it under the terms of the GNU General Public License as published by
+//	the Free Software Foundation; either version 2 of the License, or
+//	(at your option) any later version.
+//	
+//	PRISM 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 General Public License for more details.
+//	
+//	You should have received a copy of the GNU General Public License
+//	along with PRISM; if not, write to the Free Software Foundation,
+//	Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+//	
+//==============================================================================
+
+package explicit;
+
+import java.util.BitSet;
+
+import parser.ast.Expression;
+
+/**
+ * A ModelExpressionTransformation where only the expression changes, not the model.
+ * @param <M> the model type
+ */
+public class ModelExpressionTransformationIdentity<M extends Model> implements ModelExpressionTransformation<M,M> {
+	/** The model */
+	private M model;
+
+	/** The original expression */
+	private Expression originalExpression;
+
+	/** The transformed expression */
+	private Expression transformedExpression;
+
+	/** The original (and transformed) states of interest */
+	private BitSet statesOfInterest;
+
+	/**
+	 * Constructor.
+	 * @param model the model
+	 * @param originalExpression the original expression
+	 * @param transformedExpression the transformed expression
+	 * @param statesOfInterest the states of interest
+	 */
+	public ModelExpressionTransformationIdentity(M model, Expression originalExpression, Expression transformedExpression, BitSet statesOfInterest)
+	{
+		this.model = model;
+		this.originalExpression = originalExpression;
+		this.transformedExpression = transformedExpression;
+		this.statesOfInterest = statesOfInterest;
+	}
+
+	@Override
+	public M getOriginalModel()
+	{
+		return model;
+	}
+
+	@Override
+	public M getTransformedModel()
+	{
+		return model;
+	}
+
+	@Override
+	public StateValues projectToOriginalModel(StateValues svTransformedModel)
+	{
+		return svTransformedModel;
+	}
+
+	@Override
+	public Expression getTransformedExpression()
+	{
+		return transformedExpression;
+	}
+
+	@Override
+	public Expression getOriginalExpression()
+	{
+		return originalExpression;
+	}
+
+	@Override
+	public BitSet getTransformedStatesOfInterest()
+	{
+		return statesOfInterest;
+	}
+
+}