1 files changed, 48 insertions, 0 deletions

diff --git a/subprojects/viatra-runtime/src/main/java/tools/refinery/viatra/runtime/matchers/psystem/rewriters/IConstraintFilter.java b/subprojects/viatra-runtime/src/main/java/tools/refinery/viatra/runtime/matchers/psystem/rewriters/IConstraintFilter.java
new file mode 100644
index 00000000..518b9c64
--- /dev/null
+++ b/subprojects/viatra-runtime/src/main/java/tools/refinery/viatra/runtime/matchers/psystem/rewriters/IConstraintFilter.java
@@ -0,0 +1,48 @@
+/*******************************************************************************
+ * Copyright (c) 2010-2015, Zoltan Ujhelyi, Marton Bur, Istvan Rath and Daniel Varro
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License v. 2.0 which is available at
+ * http://www.eclipse.org/legal/epl-v20.html.
+ * 
+ * SPDX-License-Identifier: EPL-2.0
+ *******************************************************************************/
+package tools.refinery.viatra.runtime.matchers.psystem.rewriters;
+
+import tools.refinery.viatra.runtime.matchers.psystem.PConstraint;
+import tools.refinery.viatra.runtime.matchers.psystem.basicdeferred.ExportedParameter;
+
+/**
+ * Helper interface to exclude constraints from PBody copy processes
+ * 
+ * @author Marton Bur
+ * 
+ */
+public interface IConstraintFilter {
+    /**
+     * Returns true, if the given constraint should be filtered (thus should not be copied)
+     * 
+     * @param constraint
+     *            to check
+     * @return true, if the constraint should be filtered
+     */
+    boolean filter(PConstraint constraint);
+    
+    public static class ExportedParameterFilter implements IConstraintFilter {
+        
+        @Override
+        public boolean filter(PConstraint constraint) {
+            return constraint instanceof ExportedParameter;
+        }
+        
+    }
+    
+    public static class AllowAllFilter implements IConstraintFilter {
+        
+        @Override
+        public boolean filter(PConstraint constraint) {
+            // Nothing is filtered
+            return false;
+        }
+        
+    }
+}
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