initial commit

src/main/java/jef/expressions/ConstantExpression.java

@@ -0,0 +1,23 @@
+package jef.expressions;
+
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+
+@Getter
+@AllArgsConstructor
+public class ConstantExpression implements Expression {
+    public static final jef.expressions.ConstantExpression I0 = new jef.expressions.ConstantExpression(0);
+    public static final jef.expressions.ConstantExpression I1 = new jef.expressions.ConstantExpression(1);
+
+    protected final Object value;
+
+    @Override
+    public Type getType() {
+        return Type.CONSTANT;
+    }
+
+    @Override
+    public String toString() {
+        return value.toString();
+    }
+}