1 files changed, 35 insertions, 0 deletions

diff --git a/subprojects/interpreter/src/main/java/tools/refinery/interpreter/matchers/psystem/queries/PParameterDirection.java b/subprojects/interpreter/src/main/java/tools/refinery/interpreter/matchers/psystem/queries/PParameterDirection.java
new file mode 100644
index 00000000..d8bdda61
--- /dev/null
+++ b/subprojects/interpreter/src/main/java/tools/refinery/interpreter/matchers/psystem/queries/PParameterDirection.java
@@ -0,0 +1,35 @@
+/*******************************************************************************
+ * Copyright (c) 2010-2016, 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.interpreter.matchers.psystem.queries;
+
+/**
+ * Values of this enum describe a constraint to the calling of patterns regarding its parameters.
+ *
+ * @author Grill Balázs
+ * @since 1.4
+ *
+ */
+public enum PParameterDirection {
+
+    /**
+     * Default value, no additional constraint is applied
+     */
+    INOUT,
+
+    /**
+     * The parameters marked with this constraints shall be set to a value before calling the pattern
+     */
+    IN,
+
+    /**
+     * The parameters marked with this constraints shall not be set to a value before calling the pattern
+     */
+    OUT
+
+}