1 files changed, 47 insertions, 0 deletions

diff --git a/subprojects/logic/src/main/java/tools/refinery/logic/term/AbstractTerm.java b/subprojects/logic/src/main/java/tools/refinery/logic/term/AbstractTerm.java
new file mode 100644
index 00000000..293f7e9e
--- /dev/null
+++ b/subprojects/logic/src/main/java/tools/refinery/logic/term/AbstractTerm.java
@@ -0,0 +1,47 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
+package tools.refinery.logic.term;
+
+import tools.refinery.logic.equality.LiteralEqualityHelper;
+import tools.refinery.logic.equality.LiteralHashCodeHelper;
+
+import java.util.Objects;
+
+public abstract class AbstractTerm<T> implements Term<T> {
+        private final Class<T> type;
+
+        protected AbstractTerm(Class<T> type) {
+                this.type = type;
+        }
+
+        @Override
+        public Class<T> getType() {
+                return type;
+        }
+
+        @Override
+        public boolean equalsWithSubstitution(LiteralEqualityHelper helper, AnyTerm other) {
+                return other != null && getClass() == other.getClass() && type.equals(other.getType());
+        }
+
+        @Override
+        public int hashCodeWithSubstitution(LiteralHashCodeHelper helper) {
+                return Objects.hash(getClass(), type);
+        }
+
+        @Override
+        public boolean equals(Object o) {
+                if (this == o) return true;
+                if (o == null || getClass() != o.getClass()) return false;
+                AbstractTerm<?> that = (AbstractTerm<?>) o;
+                return equalsWithSubstitution(LiteralEqualityHelper.DEFAULT, that);
+        }
+
+        @Override
+        public int hashCode() {
+                return hashCodeWithSubstitution(LiteralHashCodeHelper.DEFAULT);
+        }
+}