1 files changed, 55 insertions, 0 deletions
diff --git a/src/utils/lombok/javac/PackageName.java b/src/utils/lombok/javac/PackageName.java
new file mode 100644
index 00000000..e4dd6b20
--- /dev/null
+++ b/src/utils/lombok/javac/PackageName.java
@@ -0,0 +1,55 @@
+/*
+ * Copyright (C) 2017 The Project Lombok Authors.
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ * 
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+package lombok.javac;
+
+import java.lang.reflect.Method;
+
+import com.sun.tools.javac.tree.JCTree;
+import com.sun.tools.javac.tree.JCTree.JCCompilationUnit;
+import com.sun.tools.javac.tree.JCTree.JCFieldAccess;
+import com.sun.tools.javac.tree.JCTree.JCIdent;
+
+// Supports JDK6-9
+public class PackageName {
+	private static final Method packageNameMethod = getPackageNameMethod();
+	
+	private static Method getPackageNameMethod() {
+		try {
+			return JCCompilationUnit.class.getDeclaredMethod("getPackageName");
+		} catch (Exception e) {
+			return null;
+		}
+	}
+	
+	public static String getPackageName(JCCompilationUnit cu) {
+		JCTree t = getPackageNode(cu);
+		return t != null ? t.toString() : null;
+	}
+	
+	public static JCTree getPackageNode(JCCompilationUnit cu) {
+		if (packageNameMethod != null) try {
+			Object pkg = packageNameMethod.invoke(cu);
+			return (pkg instanceof JCFieldAccess || pkg instanceof JCIdent) ? (JCTree) pkg : null;
+		} catch (Exception e) {}
+		return cu.pid instanceof JCFieldAccess || cu.pid instanceof JCIdent ? cu.pid : null;
+	}
+}