1 files changed, 53 insertions, 0 deletions

diff --git a/subprojects/viatra-runtime/src/main/java/tools/refinery/viatra/runtime/matchers/psystem/rewriters/AbstractRewriterTraceSource.java b/subprojects/viatra-runtime/src/main/java/tools/refinery/viatra/runtime/matchers/psystem/rewriters/AbstractRewriterTraceSource.java
new file mode 100644
index 00000000..276b2b42
--- /dev/null
+++ b/subprojects/viatra-runtime/src/main/java/tools/refinery/viatra/runtime/matchers/psystem/rewriters/AbstractRewriterTraceSource.java
@@ -0,0 +1,53 @@
+/*******************************************************************************
+ * Copyright (c) 2010-2017, Grill Balázs, IncQueryLabs
+ * 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 java.util.Objects;
+
+import tools.refinery.viatra.runtime.matchers.psystem.PConstraint;
+import tools.refinery.viatra.runtime.matchers.psystem.PTraceable;
+
+/**
+ * @since 1.6
+ *
+ */
+public class AbstractRewriterTraceSource {
+
+    private IRewriterTraceCollector traceCollector = NopTraceCollector.INSTANCE;
+    
+    public void setTraceCollector(IRewriterTraceCollector traceCollector) {
+        this.traceCollector = Objects.requireNonNull(traceCollector);
+    }
+    
+    public IPTraceableTraceProvider getTraces() {
+        return traceCollector;
+    }
+    
+    protected IRewriterTraceCollector getTraceCollector() {
+        return traceCollector;
+    }
+    
+    /**
+     * Mark the given derivative to be originated from the given original constraint.
+     * @since 1.6
+     */
+    protected void addTrace(PTraceable original, PTraceable derivative){
+        traceCollector.addTrace(original, derivative);
+    }
+    
+    /**
+     * Indicate that the given derivative is removed from the resulting query, thus its trace
+     * information should be removed also.
+     * @since 1.6
+     */
+    protected void derivativeRemoved(PConstraint derivative, IDerivativeModificationReason reason){
+        traceCollector.derivativeRemoved(derivative, reason);
+    }
+
+}