8004814: javadoc should be able to detect default methods

Reviewed-by: jjg

langtools/src/share/classes/com/sun/javadoc/ClassDoc.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1998, 2006, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1998, 2012, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -65,6 +65,12 @@ public interface ClassDoc extends ProgramElementDoc, Type {
      */
     boolean isExternalizable();
 
+    /**
+     * Return true if this class can be used as a target type of a lambda expression
+     * or method reference.
+     */
+    boolean isFunctionalInterface();
+
     /**
      * Return the serialization methods for this class or
      * interface.

langtools/src/share/classes/com/sun/javadoc/MethodDoc.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1998, 2006, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1998, 2012, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -38,6 +38,11 @@ public interface MethodDoc extends ExecutableMemberDoc {
      */
     boolean isAbstract();
 
+    /**
+     * Return true if this method is default
+     */
+    boolean isDefault();
+
     /**
      * Get return type.
      *

langtools/src/share/classes/com/sun/tools/javadoc/ClassDocImpl.java

@@ -276,6 +276,10 @@ public class ClassDocImpl extends ProgramElementDocImpl implements ClassDoc {
         return false;
     }
 
+    public boolean isFunctionalInterface() {
+        return env.types.isFunctionalInterface(tsym);
+    }
+
     /**
      * Return the package that this class is contained in.
      */

langtools/src/share/classes/com/sun/tools/javadoc/MethodDocImpl.java

@@ -75,6 +75,13 @@ public class MethodDocImpl
         return true;
     }
 
+    /**
+     * Return true if this method is default
+     */
+    public boolean isDefault() {
+        return (sym.flags() & Flags.DEFAULT) != 0;
+    }
+
     /**
      * Return true if this method is abstract
      */