Populate xpath/ hierarchy

[yangtools.git] / xpath / yang-xpath-api / src / main / java / org / opendaylight / yangtools / yang / xpath / api / YangNegateExpr.java

diff --git a/xpath/yang-xpath-api/src/main/java/org/opendaylight/yangtools/yang/xpath/api/YangNegateExpr.java b/xpath/yang-xpath-api/src/main/java/org/opendaylight/yangtools/yang/xpath/api/YangNegateExpr.java
new file mode 100644 (file)
index 0000000..41fd77f
--- /dev/null
+++ b/xpath/yang-xpath-api/src/main/java/org/opendaylight/yangtools/yang/xpath/api/YangNegateExpr.java
@@ -0,0 +1,47 @@
+/*
+ * Copyright (c) 2018 Pantheon Technologies, s.r.o. and others.  All rights reserved.
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License v1.0 which accompanies this distribution,
+ * and is available at http://www.eclipse.org/legal/epl-v10.html
+ */
+package org.opendaylight.yangtools.yang.xpath.api;
+
+import static java.util.Objects.requireNonNull;
+
+import com.google.common.annotations.Beta;
+import org.eclipse.jdt.annotation.Nullable;
+
+@Beta
+public final class YangNegateExpr implements YangExpr {
+    private static final long serialVersionUID = 1L;
+
+    private final YangExpr subExpr;
+
+    private YangNegateExpr(final YangExpr subExpr) {
+        this.subExpr = requireNonNull(subExpr);
+    }
+
+    public static YangNegateExpr of(final YangExpr subExpr) {
+        return new YangNegateExpr(subExpr);
+    }
+
+    public YangExpr getSubExpr() {
+        return subExpr;
+    }
+
+    @Override
+    public int hashCode() {
+        return subExpr.hashCode();
+    }
+
+    @Override
+    public boolean equals(final @Nullable Object obj) {
+        return this == obj || obj instanceof YangNegateExpr && subExpr.equals(((YangNegateExpr) obj).subExpr);
+    }
+
+    @Override
+    public String toString() {
+        return "-(" + subExpr + ")";
+    }
+}