Fixed issue 459: Delombok would choke on try-with-resources.

doc/changelog.markdown

@@ -7,6 +7,7 @@ Lombok Changelog
 * FEATURE: Added support for Log4j v2.0 via `@Log4j2` [Issue #432](http://code.google.com/p/projectlombok/issues/detail?id=432)
 * ENHANCEMENT: The Lombok installer can now find and install lombok into [JBoss Developer Studio](http://www.redhat.com/products/jbossenterprisemiddleware/developer-studio/). The installer will now also look for eclipse and eclipse variants in your home directory. [Issue #434](http://code.google.com/p/projectlombok/issues/detail?id=432)
 * BUGFIX: `@ExtensionMethods` no longer causes `VerifyError` exceptions when running eclipse-compiled code if extension methods are called on expressions which are method calls whose return type is a type variable. For example, `someList.get(i).extensionMethod()` would fail that way. [Issue #436](http://code.google.com/p/projectlombok/issues/detail?id=436)
+* BUGFIX: java 7's try-with-resources statement did not delombok correctly. [Issue #459](http://code.google.com/p/projectlombok/issues/detail?id=459)
 
 ### v0.11.6 (October 30th, 2012)
 * FEATURE: Lombok can be disabled entirely for any given compile run by using JVM switch `-Dlombok.disable`. This might be useful for code style checkers and such.

src/delombok/lombok/delombok/PrettyCommentsPrinter.java

@@ -22,6 +22,11 @@
  * CA 95054 USA or visit www.sun.com if you need additional information or
  * have any questions.
  */
+
+/*
+ * Code derived from com.sun.tools.javac.tree.Pretty, from the langtools project.
+ * A version can be found at, for example, http://hg.openjdk.java.net/jdk7/build/langtools
+ */
 package lombok.delombok;
 
 import static com.sun.tools.javac.code.Flags.ANNOTATION;
@@ -981,6 +986,29 @@ public class PrettyCommentsPrinter extends JCTree.Visitor {
     public void visitTry(JCTry tree) {
         try {
             print("try ");
+            List<?> resources = null;
+            try {
+                Field f = JCTry.class.getField("resources");
+                resources = (List<?>) f.get(tree);
+            } catch (Exception ignore) {
+                // In JDK6 and down this field does not exist; resources will retain its initializer value which is what we want.
+            }
+            
+            if (resources != null && resources.nonEmpty()) {
+                boolean first = true;
+                print("(");
+                for (Object var0 : resources) {
+                    JCTree var = (JCTree) var0;
+                    if (!first) {
+                        println();
+                        indent();
+                    }
+                    printStat(var);
+                    first = false;
+                }
+                print(") ");
+            }
+            
             printStat(tree.body);
             for (List<JCCatch> l = tree.catchers; l.nonEmpty(); l = l.tail) {
                 printStat(l.head);

test/pretty/resource/after/TryWithResources.java

@@ -0,0 +1,9 @@
+//version 7:
+import java.io.PrintWriter;
+public class TryWithResources {
+	{
+		try (final PrintWriter pw = new PrintWriter(System.out);) {
+			pw.println();
+		}
+	}
+}

test/pretty/resource/before/TryWithResources.java

@@ -0,0 +1,9 @@
+//version 7:
+import java.io.PrintWriter;
+public class TryWithResources {
+	{
+		try (PrintWriter pw = new PrintWriter(System.out)) {
+			pw.println();
+		}
+	}
+}