src/jdk.jextract/share/classes/com/sun/tools/jextract/tree/StructTree.java

*** 85,94 ****
--- 85,114 ----
  
      public boolean isUnion() {
          return cursor().kind() == CursorKind.UnionDecl;
      }
  
+     /**
+      * Is this struct/union declared as anonymous member of another struct/union?
+      *
+      * Example:
+      *
+      *    struct X {
+      *        struct { int i; int j; }; // <-- anonymous struct
+      *        long l;
+      *    };
+      *
+      * Note: this is specific use of the word 'anonymous'. A struct with name()
+      * being empty is not necessarily anonymous in this usage.
+      *
+      * The structs in the following declarations are *not* anonymous eventhough
+      * the names of these structs are empty.
+      *
+      *    struct { int i; int j; } thePoint;
+      *    void func(struct { char* name; int len; } p1);
+      *    typedef struct { int i; int j; } Point;
+      */
      public boolean isAnonymous() {
          return cursor().isAnonymousStruct();
      }
  
      public Layout layout(BiFunction<FieldTree, Layout, Layout> fieldMapper) {