1 files changed, 21 insertions, 0 deletions

diff --git a/subprojects/logic/src/main/java/tools/refinery/logic/valuation/RestrictedValuation.java b/subprojects/logic/src/main/java/tools/refinery/logic/valuation/RestrictedValuation.java
new file mode 100644
index 00000000..b6ac7cc9
--- /dev/null
+++ b/subprojects/logic/src/main/java/tools/refinery/logic/valuation/RestrictedValuation.java
@@ -0,0 +1,21 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
+package tools.refinery.logic.valuation;
+
+import tools.refinery.logic.term.AnyDataVariable;
+import tools.refinery.logic.term.DataVariable;
+
+import java.util.Set;
+
+public record RestrictedValuation(Valuation valuation, Set<AnyDataVariable> allowedVariables) implements Valuation {
+        @Override
+        public <T> T getValue(DataVariable<T> variable) {
+                if (!allowedVariables.contains(variable)) {
+                        throw new IllegalArgumentException("Variable %s is not in scope".formatted(variable));
+                }
+                return valuation.getValue(variable);
+        }
+}