1 files changed, 73 insertions, 0 deletions
diff --git a/javaparser-core/src/main/java/com/github/javaparser/ast/nodeTypes/NodeWithModifiers.java b/javaparser-core/src/main/java/com/github/javaparser/ast/nodeTypes/NodeWithModifiers.java
new file mode 100644
index 000000000..3a499bfa3
--- /dev/null
+++ b/javaparser-core/src/main/java/com/github/javaparser/ast/nodeTypes/NodeWithModifiers.java
@@ -0,0 +1,73 @@
+/*
+ * Copyright (C) 2007-2010 Júlio Vilmar Gesser.
+ * Copyright (C) 2011, 2013-2016 The JavaParser Team.
+ *
+ * This file is part of JavaParser.
+ *
+ * JavaParser can be used either under the terms of
+ * a) the GNU Lesser General Public License as published by
+ *     the Free Software Foundation, either version 3 of the License, or
+ *     (at your option) any later version.
+ * b) the terms of the Apache License
+ *
+ * You should have received a copy of both licenses in LICENCE.LGPL and
+ * LICENCE.APACHE. Please refer to those files for details.
+ *
+ * JavaParser is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ */
+
+package com.github.javaparser.ast.nodeTypes;
+
+import com.github.javaparser.ast.Modifier;
+import com.github.javaparser.ast.Node;
+
+import java.util.Arrays;
+import java.util.EnumSet;
+import java.util.stream.Collectors;
+
+/**
+ * A Node with Modifiers.
+ * Note that not all modifiers may be valid for this node.
+ */
+public interface NodeWithModifiers<N extends Node> {
+    /**
+     * Return the modifiers of this variable declaration.
+     * Warning: modifying the returned set will not trigger observers,
+     * you have to use setModifiers for that.
+     *
+     * @return modifiers
+     * @see Modifier
+     */
+    EnumSet<Modifier> getModifiers();
+
+    N setModifiers(EnumSet<Modifier> modifiers);
+
+    @SuppressWarnings("unchecked")
+    default N addModifier(Modifier... modifiers) {
+        EnumSet<Modifier> newModifiers = getModifiers().clone();
+        newModifiers.addAll(Arrays.stream(modifiers)
+                .collect(Collectors.toCollection(() -> EnumSet.noneOf(Modifier.class))));
+        setModifiers(newModifiers);
+        return (N) this;
+    }
+
+    @SuppressWarnings("unchecked")
+    default N removeModifier(Modifier... m) {
+        EnumSet<Modifier> newModifiers = getModifiers().clone();
+        newModifiers.removeAll(Arrays.stream(m)
+                .collect(Collectors.toCollection(() -> EnumSet.noneOf(Modifier.class))));
+        setModifiers(newModifiers);
+        return (N) this;
+    }
+    default N setModifier(Modifier m, boolean set) {
+        if (set) {
+            return addModifier(m);
+        } else {
+            return removeModifier(m);
+        }
+    }
+
+}
+\ No newline at end of file