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 /*

  * Copyright (c) 1997, 2010, 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

  * under the terms of the GNU General Public License version 2 only, as

  * published by the Free Software Foundation.

  *

  * This code 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 General Public License

  * version 2 for more details (a copy is included in the LICENSE file that

  * accompanied this code).

  *

  * You should have received a copy of the GNU General Public License version

  * 2 along with this work; if not, write to the Free Software Foundation,

  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

  *

  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

  * or visit www.oracle.com if you need additional information or have any

  * questions.

  *

  */

 #include "precompiled.hpp"

 #include "classfile/javaClasses.hpp"

 #include "classfile/symbolTable.hpp"

 #include "classfile/systemDictionary.hpp"

 #include "classfile/verifier.hpp"

 #include "classfile/vmSymbols.hpp"

 #include "interpreter/linkResolver.hpp"

 #include "memory/oopFactory.hpp"

 #include "memory/resourceArea.hpp"

 #include "memory/universe.inline.hpp"

 #include "oops/instanceKlass.hpp"

 #include "oops/objArrayKlass.hpp"

 #include "oops/objArrayOop.hpp"

 #include "prims/jvm.h"

 #include "prims/methodHandleWalk.hpp"

 #include "runtime/arguments.hpp"

 #include "runtime/handles.inline.hpp"

 #include "runtime/javaCalls.hpp"

 #include "runtime/reflection.hpp"

 #include "runtime/reflectionUtils.hpp"

 #include "runtime/signature.hpp"

 #include "runtime/vframe.hpp"

 #define JAVA_1_5_VERSION                  49

 static void trace_class_resolution(klassOop to_class) {

   ResourceMark rm;

   int line_number = -1;

   const char * source_file = NULL;

   klassOop caller = NULL;

   JavaThread* jthread = JavaThread::current();

   if (jthread->has_last_Java_frame()) {

     vframeStream vfst(jthread);

     // skip over any frames belonging to java.lang.Class

     while (!vfst.at_end() &&

            instanceKlass::cast(vfst.method()->method_holder())->name() == vmSymbols::java_lang_Class()) {

       vfst.next();

     }

     if (!vfst.at_end()) {

       // this frame is a likely suspect

       caller = vfst.method()->method_holder();

       line_number = vfst.method()->line_number_from_bci(vfst.bci());

       Symbol* s = instanceKlass::cast(vfst.method()->method_holder())->source_file_name();

       if (s != NULL) {

         source_file = s->as_C_string();

       }

     }

   }

   if (caller != NULL) {

     const char * from = Klass::cast(caller)->external_name();

     const char * to = Klass::cast(to_class)->external_name();

     // print in a single call to reduce interleaving between threads

     if (source_file != NULL) {

       tty->print("RESOLVE %s %s %s:%d (reflection)\n", from, to, source_file, line_number);

     } else {

       tty->print("RESOLVE %s %s (reflection)\n", from, to);

     }

   }

 }

 oop Reflection::box(jvalue* value, BasicType type, TRAPS) {

   if (type == T_VOID) {

     return NULL;

   }

   if (type == T_OBJECT || type == T_ARRAY) {

     // regular objects are not boxed

     return (oop) value->l;

   }

   oop result = java_lang_boxing_object::create(type, value, CHECK_NULL);

   if (result == NULL) {

     THROW_(vmSymbols::java_lang_IllegalArgumentException(), result);

   }

   return result;

 }

 BasicType Reflection::unbox_for_primitive(oop box, jvalue* value, TRAPS) {

   if (box == NULL) {

     THROW_(vmSymbols::java_lang_IllegalArgumentException(), T_ILLEGAL);

   }

   return java_lang_boxing_object::get_value(box, value);

 }

 BasicType Reflection::unbox_for_regular_object(oop box, jvalue* value) {

   // Note:  box is really the unboxed oop.  It might even be a Short, etc.!

   value->l = (jobject) box;

   return T_OBJECT;

 }

 void Reflection::widen(jvalue* value, BasicType current_type, BasicType wide_type, TRAPS) {

   assert(wide_type != current_type, "widen should not be called with identical types");

   switch (wide_type) {

     case T_BOOLEAN:

     case T_BYTE:

     case T_CHAR:

       break;  // fail

     case T_SHORT:

       switch (current_type) {

         case T_BYTE:

           value->s = (jshort) value->b;

           return;

       }

       break;  // fail

     case T_INT:

       switch (current_type) {

         case T_BYTE:

           value->i = (jint) value->b;

           return;

         case T_CHAR:

           value->i = (jint) value->c;

           return;

         case T_SHORT:

           value->i = (jint) value->s;

           return;

       }

       break;  // fail

     case T_LONG:

       switch (current_type) {

         case T_BYTE:

           value->j = (jlong) value->b;

           return;

         case T_CHAR:

           value->j = (jlong) value->c;

           return;

         case T_SHORT:

           value->j = (jlong) value->s;

           return;

         case T_INT:

           value->j = (jlong) value->i;

           return;

       }

       break;  // fail

     case T_FLOAT:

       switch (current_type) {

         case T_BYTE:

           value->f = (jfloat) value->b;

           return;

         case T_CHAR:

           value->f = (jfloat) value->c;

           return;

         case T_SHORT:

           value->f = (jfloat) value->s;

           return;

         case T_INT:

           value->f = (jfloat) value->i;

           return;

         case T_LONG:

           value->f = (jfloat) value->j;

           return;

       }

       break;  // fail

     case T_DOUBLE:

       switch (current_type) {

         case T_BYTE:

           value->d = (jdouble) value->b;

           return;

         case T_CHAR:

           value->d = (jdouble) value->c;

           return;

         case T_SHORT:

           value->d = (jdouble) value->s;

           return;

         case T_INT:

           value->d = (jdouble) value->i;

           return;

         case T_FLOAT:

           value->d = (jdouble) value->f;

           return;

         case T_LONG:

           value->d = (jdouble) value->j;

           return;

       }

       break;  // fail

     default:

       break;  // fail

   }

   THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "argument type mismatch");

 }

 BasicType Reflection::array_get(jvalue* value, arrayOop a, int index, TRAPS) {

   if (!a->is_within_bounds(index)) {

     THROW_(vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), T_ILLEGAL);

   }

   if (a->is_objArray()) {

     value->l = (jobject) objArrayOop(a)->obj_at(index);

     return T_OBJECT;

   } else {

     assert(a->is_typeArray(), "just checking");

     BasicType type = typeArrayKlass::cast(a->klass())->element_type();

     switch (type) {

       case T_BOOLEAN:

         value->z = typeArrayOop(a)->bool_at(index);

         break;

       case T_CHAR:

         value->c = typeArrayOop(a)->char_at(index);

         break;

       case T_FLOAT:

         value->f = typeArrayOop(a)->float_at(index);

         break;

       case T_DOUBLE:

         value->d = typeArrayOop(a)->double_at(index);

         break;

       case T_BYTE:

         value->b = typeArrayOop(a)->byte_at(index);

         break;

       case T_SHORT:

         value->s = typeArrayOop(a)->short_at(index);

         break;

       case T_INT:

         value->i = typeArrayOop(a)->int_at(index);

         break;

       case T_LONG:

         value->j = typeArrayOop(a)->long_at(index);

         break;

       default:

         return T_ILLEGAL;

     }

     return type;

   }

 }

 void Reflection::array_set(jvalue* value, arrayOop a, int index, BasicType value_type, TRAPS) {

   if (!a->is_within_bounds(index)) {

     THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException());

   }

   if (a->is_objArray()) {

     if (value_type == T_OBJECT) {

       oop obj = (oop) value->l;

       if (obj != NULL) {

         klassOop element_klass = objArrayKlass::cast(a->klass())->element_klass();

         if (!obj->is_a(element_klass)) {

           THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "array element type mismatch");

         }

       }

       objArrayOop(a)->obj_at_put(index, obj);

     }

   } else {

     assert(a->is_typeArray(), "just checking");

     BasicType array_type = typeArrayKlass::cast(a->klass())->element_type();

     if (array_type != value_type) {

       // The widen operation can potentially throw an exception, but cannot block,

       // so typeArrayOop a is safe if the call succeeds.

       widen(value, value_type, array_type, CHECK);

     }

     switch (array_type) {

       case T_BOOLEAN:

         typeArrayOop(a)->bool_at_put(index, value->z);

         break;

       case T_CHAR:

         typeArrayOop(a)->char_at_put(index, value->c);

         break;

       case T_FLOAT:

         typeArrayOop(a)->float_at_put(index, value->f);

         break;

       case T_DOUBLE:

         typeArrayOop(a)->double_at_put(index, value->d);

         break;

       case T_BYTE:

         typeArrayOop(a)->byte_at_put(index, value->b);

         break;

       case T_SHORT:

         typeArrayOop(a)->short_at_put(index, value->s);

         break;

       case T_INT:

         typeArrayOop(a)->int_at_put(index, value->i);

         break;

       case T_LONG:

         typeArrayOop(a)->long_at_put(index, value->j);

         break;

       default:

         THROW(vmSymbols::java_lang_IllegalArgumentException());

     }

   }

 }

 klassOop Reflection::basic_type_mirror_to_arrayklass(oop basic_type_mirror, TRAPS) {

   assert(java_lang_Class::is_primitive(basic_type_mirror), "just checking");

   BasicType type = java_lang_Class::primitive_type(basic_type_mirror);

   if (type == T_VOID) {

     THROW_0(vmSymbols::java_lang_IllegalArgumentException());

   } else {

     return Universe::typeArrayKlassObj(type);

   }

 }

 oop Reflection:: basic_type_arrayklass_to_mirror(klassOop basic_type_arrayklass, TRAPS) {

   BasicType type = typeArrayKlass::cast(basic_type_arrayklass)->element_type();

   return Universe::java_mirror(type);

 }

 arrayOop Reflection::reflect_new_array(oop element_mirror, jint length, TRAPS) {

   if (element_mirror == NULL) {

     THROW_0(vmSymbols::java_lang_NullPointerException());

   }

   if (length < 0) {

     THROW_0(vmSymbols::java_lang_NegativeArraySizeException());

   }

   if (java_lang_Class::is_primitive(element_mirror)) {

     klassOop tak = basic_type_mirror_to_arrayklass(element_mirror, CHECK_NULL);

     return typeArrayKlass::cast(tak)->allocate(length, THREAD);

   } else {

     klassOop k = java_lang_Class::as_klassOop(element_mirror);

     if (Klass::cast(k)->oop_is_array() && arrayKlass::cast(k)->dimension() >= MAX_DIM) {

       THROW_0(vmSymbols::java_lang_IllegalArgumentException());

     }

     return oopFactory::new_objArray(k, length, THREAD);

   }

 }

 arrayOop Reflection::reflect_new_multi_array(oop element_mirror, typeArrayOop dim_array, TRAPS) {

   assert(dim_array->is_typeArray(), "just checking");

   assert(typeArrayKlass::cast(dim_array->klass())->element_type() == T_INT, "just checking");

   if (element_mirror == NULL) {

     THROW_0(vmSymbols::java_lang_NullPointerException());

   }

   int len = dim_array->length();

   if (len <= 0 || len > MAX_DIM) {

     THROW_0(vmSymbols::java_lang_IllegalArgumentException());

   }

   jint dimensions[MAX_DIM];   // C array copy of intArrayOop

   for (int i = 0; i < len; i++) {

     int d = dim_array->int_at(i);

     if (d < 0) {

       THROW_0(vmSymbols::java_lang_NegativeArraySizeException());

     }

     dimensions[i] = d;

   }

   klassOop klass;

   int dim = len;

   if (java_lang_Class::is_primitive(element_mirror)) {

     klass = basic_type_mirror_to_arrayklass(element_mirror, CHECK_NULL);

   } else {

     klass = java_lang_Class::as_klassOop(element_mirror);

     if (Klass::cast(klass)->oop_is_array()) {

       int k_dim = arrayKlass::cast(klass)->dimension();

       if (k_dim + len > MAX_DIM) {

         THROW_0(vmSymbols::java_lang_IllegalArgumentException());

       }

       dim += k_dim;

     }

   }

   klass = Klass::cast(klass)->array_klass(dim, CHECK_NULL);

   oop obj = arrayKlass::cast(klass)->multi_allocate(len, dimensions, THREAD);

   assert(obj->is_array(), "just checking");

   return arrayOop(obj);

 }

 oop Reflection::array_component_type(oop mirror, TRAPS) {

   if (java_lang_Class::is_primitive(mirror)) {

     return NULL;

   }

   klassOop klass = java_lang_Class::as_klassOop(mirror);

   if (!Klass::cast(klass)->oop_is_array()) {

     return NULL;

   }

   oop result = arrayKlass::cast(klass)->component_mirror();

 #ifdef ASSERT

   oop result2 = NULL;

   if (arrayKlass::cast(klass)->dimension() == 1) {

     if (Klass::cast(klass)->oop_is_typeArray()) {

       result2 = basic_type_arrayklass_to_mirror(klass, CHECK_NULL);

     } else {

       result2 = Klass::cast(objArrayKlass::cast(klass)->element_klass())->java_mirror();

     }

   } else {

     klassOop lower_dim = arrayKlass::cast(klass)->lower_dimension();

     assert(Klass::cast(lower_dim)->oop_is_array(), "just checking");

     result2 = Klass::cast(lower_dim)->java_mirror();

   }

   assert(result == result2, "results must be consistent");

 #endif //ASSERT

   return result;

 }

 bool Reflection::reflect_check_access(klassOop field_class, AccessFlags acc, klassOop target_class, bool is_method_invoke, TRAPS) {

   // field_class  : declaring class

   // acc          : declared field access

   // target_class : for protected

   // Check if field or method is accessible to client.  Throw an

   // IllegalAccessException and return false if not.

   // The "client" is the class associated with the nearest real frame

   // getCallerClass already skips Method.invoke frames, so pass 0 in

   // that case (same as classic).

   ResourceMark rm(THREAD);

   assert(THREAD->is_Java_thread(), "sanity check");

   klassOop client_class = ((JavaThread *)THREAD)->security_get_caller_class(is_method_invoke ? 0 : 1);

   if (client_class != field_class) {

     if (!verify_class_access(client_class, field_class, false)

         || !verify_field_access(client_class,

                                 field_class,

                                 field_class,

                                 acc,

                                 false)) {

       THROW_(vmSymbols::java_lang_IllegalAccessException(), false);

     }

   }

   // Additional test for protected members: JLS 6.6.2

   if (acc.is_protected()) {

     if (target_class != client_class) {

       if (!is_same_class_package(client_class, field_class)) {

         if (!Klass::cast(target_class)->is_subclass_of(client_class)) {

           THROW_(vmSymbols::java_lang_IllegalAccessException(), false);

         }

       }

     }

   }

   // Passed all tests

   return true;

 }

 bool Reflection::verify_class_access(klassOop current_class, klassOop new_class, bool classloader_only) {

   // Verify that current_class can access new_class.  If the classloader_only

   // flag is set, we automatically allow any accesses in which current_class

   // doesn't have a classloader.

   if ((current_class == NULL) ||

       (current_class == new_class) ||

       (instanceKlass::cast(new_class)->is_public()) ||

       is_same_class_package(current_class, new_class)) {

     return true;

   }

   // New (1.4) reflection implementation. Allow all accesses from

   // sun/reflect/MagicAccessorImpl subclasses to succeed trivially.

   if (   JDK_Version::is_gte_jdk14x_version()

       && UseNewReflection

       && Klass::cast(current_class)->is_subclass_of(SystemDictionary::reflect_MagicAccessorImpl_klass())) {

     return true;

   }

   return can_relax_access_check_for(current_class, new_class, classloader_only);

 }

 static bool under_host_klass(instanceKlass* ik, klassOop host_klass) {

   DEBUG_ONLY(int inf_loop_check = 1000 * 1000 * 1000);

   for (;;) {

     klassOop hc = (klassOop) ik->host_klass();

     if (hc == NULL)        return false;

     if (hc == host_klass)  return true;

     ik = instanceKlass::cast(hc);

     // There's no way to make a host class loop short of patching memory.

     // Therefore there cannot be a loop here unles there's another bug.

     // Still, let's check for it.

     assert(--inf_loop_check > 0, "no host_klass loop");

   }

 }

 bool Reflection::can_relax_access_check_for(

     klassOop accessor, klassOop accessee, bool classloader_only) {

   instanceKlass* accessor_ik = instanceKlass::cast(accessor);

   instanceKlass* accessee_ik  = instanceKlass::cast(accessee);

   // If either is on the other's host_klass chain, access is OK,

   // because one is inside the other.

   if (under_host_klass(accessor_ik, accessee) ||

       under_host_klass(accessee_ik, accessor))

     return true;

   // Adapter frames can access anything.

   if (MethodHandleCompiler::klass_is_method_handle_adapter_holder(accessor))

     // This is an internal adapter frame from the MethodHandleCompiler.

     return true;

   if (RelaxAccessControlCheck ||

       (accessor_ik->major_version() < JAVA_1_5_VERSION &&

        accessee_ik->major_version() < JAVA_1_5_VERSION)) {

     return classloader_only &&

       Verifier::relax_verify_for(accessor_ik->class_loader()) &&

       accessor_ik->protection_domain() == accessee_ik->protection_domain() &&

       accessor_ik->class_loader() == accessee_ik->class_loader();

   } else {

     return false;

   }

 }

 bool Reflection::verify_field_access(klassOop current_class,

                                      klassOop resolved_class,

                                      klassOop field_class,

                                      AccessFlags access,

                                      bool classloader_only,

                                      bool protected_restriction) {

   // Verify that current_class can access a field of field_class, where that

   // field's access bits are "access".  We assume that we've already verified

   // that current_class can access field_class.

   //

   // If the classloader_only flag is set, we automatically allow any accesses

   // in which current_class doesn't have a classloader.

   //

   // "resolved_class" is the runtime type of "field_class". Sometimes we don't

   // need this distinction (e.g. if all we have is the runtime type, or during

   // class file parsing when we only care about the static type); in that case

   // callers should ensure that resolved_class == field_class.

   //

   if ((current_class == NULL) ||

       (current_class == field_class) ||

       access.is_public()) {

     return true;

   }

   if (access.is_protected()) {

     if (!protected_restriction) {

       // See if current_class is a subclass of field_class

       if (Klass::cast(current_class)->is_subclass_of(field_class)) {

         if (access.is_static() || // static fields are ok, see 6622385

             current_class == resolved_class ||

             field_class == resolved_class ||

             Klass::cast(current_class)->is_subclass_of(resolved_class) ||

             Klass::cast(resolved_class)->is_subclass_of(current_class)) {

           return true;

         }

       }

     }

   }

   if (!access.is_private() && is_same_class_package(current_class, field_class)) {

     return true;

   }

   // New (1.4) reflection implementation. Allow all accesses from

   // sun/reflect/MagicAccessorImpl subclasses to succeed trivially.

   if (   JDK_Version::is_gte_jdk14x_version()

       && UseNewReflection

       && Klass::cast(current_class)->is_subclass_of(SystemDictionary::reflect_MagicAccessorImpl_klass())) {

     return true;

   }

   return can_relax_access_check_for(

     current_class, field_class, classloader_only);

 }

 bool Reflection::is_same_class_package(klassOop class1, klassOop class2) {

   return instanceKlass::cast(class1)->is_same_class_package(class2);

 }

 bool Reflection::is_same_package_member(klassOop class1, klassOop class2, TRAPS) {

   return instanceKlass::cast(class1)->is_same_package_member(class2, THREAD);

 }

 // Checks that the 'outer' klass has declared 'inner' as being an inner klass. If not,

 // throw an incompatible class change exception

 // If inner_is_member, require the inner to be a member of the outer.

 // If !inner_is_member, require the inner to be anonymous (a non-member).

 // Caller is responsible for figuring out in advance which case must be true.

 void Reflection::check_for_inner_class(instanceKlassHandle outer, instanceKlassHandle inner,

                                        bool inner_is_member, TRAPS) {

   const int inner_class_info_index = 0;

   const int outer_class_info_index = 1;

   typeArrayHandle    icls (THREAD, outer->inner_classes());

   constantPoolHandle cp   (THREAD, outer->constants());

   for(int i = 0; i < icls->length(); i += 4) {

      int ioff = icls->ushort_at(i + inner_class_info_index);

      int ooff = icls->ushort_at(i + outer_class_info_index);

      if (inner_is_member && ioff != 0 && ooff != 0) {

         klassOop o = cp->klass_at(ooff, CHECK);

         if (o == outer()) {

           klassOop i = cp->klass_at(ioff, CHECK);

           if (i == inner()) {

             return;

           }

         }

      }

      if (!inner_is_member && ioff != 0 && ooff == 0 &&

          cp->klass_name_at_matches(inner, ioff)) {

         klassOop i = cp->klass_at(ioff, CHECK);

         if (i == inner()) {

           return;

         }

      }

   }

   // 'inner' not declared as an inner klass in outer

   ResourceMark rm(THREAD);

   Exceptions::fthrow(

     THREAD_AND_LOCATION,

     vmSymbols::java_lang_IncompatibleClassChangeError(),

     "%s and %s disagree on InnerClasses attribute",

     outer->external_name(),

     inner->external_name()

   );

 }

 // Utility method converting a single SignatureStream element into java.lang.Class instance

 oop get_mirror_from_signature(methodHandle method, SignatureStream* ss, TRAPS) {

   switch (ss->type()) {

     default:

       assert(ss->type() != T_VOID || ss->at_return_type(), "T_VOID should only appear as return type");

       return java_lang_Class::primitive_mirror(ss->type());

     case T_OBJECT:

     case T_ARRAY:

       Symbol* name        = ss->as_symbol(CHECK_NULL);

       oop loader            = instanceKlass::cast(method->method_holder())->class_loader();

       oop protection_domain = instanceKlass::cast(method->method_holder())->protection_domain();

       klassOop k = SystemDictionary::resolve_or_fail(

                                        name,

                                        Handle(THREAD, loader),

                                        Handle(THREAD, protection_domain),

                                        true, CHECK_NULL);

       if (TraceClassResolution) {

         trace_class_resolution(k);

       }

       return k->klass_part()->java_mirror();

   };

 }

 objArrayHandle Reflection::get_parameter_types(methodHandle method, int parameter_count, oop* return_type, TRAPS) {

   // Allocate array holding parameter types (java.lang.Class instances)

   objArrayOop m = oopFactory::new_objArray(SystemDictionary::Class_klass(), parameter_count, CHECK_(objArrayHandle()));

   objArrayHandle mirrors (THREAD, m);

   int index = 0;

   // Collect parameter types

   ResourceMark rm(THREAD);

   Symbol*  signature  = method->signature();

   SignatureStream ss(signature);

   while (!ss.at_return_type()) {

     oop mirror = get_mirror_from_signature(method, &ss, CHECK_(objArrayHandle()));

     mirrors->obj_at_put(index++, mirror);

     ss.next();

   }

   assert(index == parameter_count, "invalid parameter count");

   if (return_type != NULL) {

     // Collect return type as well

     assert(ss.at_return_type(), "return type should be present");

     *return_type = get_mirror_from_signature(method, &ss, CHECK_(objArrayHandle()));

   }

   return mirrors;

 }

 objArrayHandle Reflection::get_exception_types(methodHandle method, TRAPS) {

   return method->resolved_checked_exceptions(CHECK_(objArrayHandle()));

 }

 Handle Reflection::new_type(Symbol* signature, KlassHandle k, TRAPS) {

   // Basic types

   BasicType type = vmSymbols::signature_type(signature);

   if (type != T_OBJECT) {

     return Handle(THREAD, Universe::java_mirror(type));

   }

   oop loader = instanceKlass::cast(k())->class_loader();

   oop protection_domain = Klass::cast(k())->protection_domain();

   klassOop result = SystemDictionary::resolve_or_fail(signature,

                                     Handle(THREAD, loader),

                                     Handle(THREAD, protection_domain),

                                     true, CHECK_(Handle()));

   if (TraceClassResolution) {

     trace_class_resolution(result);

   }

   oop nt = Klass::cast(result)->java_mirror();

   return Handle(THREAD, nt);

 }

 oop Reflection::new_method(methodHandle method, bool intern_name, bool for_constant_pool_access, TRAPS) {

   // In jdk1.2.x, getMethods on an interface erroneously includes <clinit>, thus the complicated assert.

   // Also allow sun.reflect.ConstantPool to refer to <clinit> methods as java.lang.reflect.Methods.

   assert(!method()->is_initializer() ||

          (for_constant_pool_access && method()->is_static()) ||

          (method()->name() == vmSymbols::class_initializer_name()

     && Klass::cast(method()->method_holder())->is_interface() && JDK_Version::is_jdk12x_version()), "should call new_constructor instead");

   instanceKlassHandle holder (THREAD, method->method_holder());

   int slot = method->method_idnum();

   Symbol*  signature  = method->signature();

   int parameter_count = ArgumentCount(signature).size();

   oop return_type_oop = NULL;

   objArrayHandle parameter_types = get_parameter_types(method, parameter_count, &return_type_oop, CHECK_NULL);

   if (parameter_types.is_null() || return_type_oop == NULL) return NULL;

   Handle return_type(THREAD, return_type_oop);

   objArrayHandle exception_types = get_exception_types(method, CHECK_NULL);

   if (exception_types.is_null()) return NULL;

   Symbol*  method_name = method->name();

   Handle name;

   if (intern_name) {

     // intern_name is only true with UseNewReflection

     oop name_oop = StringTable::intern(method_name, CHECK_NULL);

     name = Handle(THREAD, name_oop);

   } else {

     name = java_lang_String::create_from_symbol(method_name, CHECK_NULL);

   }

   if (name == NULL) return NULL;

   int modifiers = method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS;

   Handle mh = java_lang_reflect_Method::create(CHECK_NULL);

   java_lang_reflect_Method::set_clazz(mh(), holder->java_mirror());

   java_lang_reflect_Method::set_slot(mh(), slot);

   java_lang_reflect_Method::set_name(mh(), name());

   java_lang_reflect_Method::set_return_type(mh(), return_type());

   java_lang_reflect_Method::set_parameter_types(mh(), parameter_types());

   java_lang_reflect_Method::set_exception_types(mh(), exception_types());

   java_lang_reflect_Method::set_modifiers(mh(), modifiers);

   java_lang_reflect_Method::set_override(mh(), false);

   if (java_lang_reflect_Method::has_signature_field() &&

       method->generic_signature() != NULL) {

     Symbol*  gs = method->generic_signature();

     Handle sig = java_lang_String::create_from_symbol(gs, CHECK_NULL);

     java_lang_reflect_Method::set_signature(mh(), sig());

   }

   if (java_lang_reflect_Method::has_annotations_field()) {

     java_lang_reflect_Method::set_annotations(mh(), method->annotations());

   }

   if (java_lang_reflect_Method::has_parameter_annotations_field()) {

     java_lang_reflect_Method::set_parameter_annotations(mh(), method->parameter_annotations());

   }

   if (java_lang_reflect_Method::has_annotation_default_field()) {

     java_lang_reflect_Method::set_annotation_default(mh(), method->annotation_default());

   }

   return mh();

 }

 oop Reflection::new_constructor(methodHandle method, TRAPS) {

   assert(method()->is_initializer(), "should call new_method instead");

   instanceKlassHandle  holder (THREAD, method->method_holder());

   int slot = method->method_idnum();

   Symbol*  signature  = method->signature();

   int parameter_count = ArgumentCount(signature).size();

   objArrayHandle parameter_types = get_parameter_types(method, parameter_count, NULL, CHECK_NULL);

   if (parameter_types.is_null()) return NULL;

   objArrayHandle exception_types = get_exception_types(method, CHECK_NULL);

   if (exception_types.is_null()) return NULL;

   int modifiers = method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS;

   Handle ch = java_lang_reflect_Constructor::create(CHECK_NULL);

   java_lang_reflect_Constructor::set_clazz(ch(), holder->java_mirror());

   java_lang_reflect_Constructor::set_slot(ch(), slot);

   java_lang_reflect_Constructor::set_parameter_types(ch(), parameter_types());

   java_lang_reflect_Constructor::set_exception_types(ch(), exception_types());

   java_lang_reflect_Constructor::set_modifiers(ch(), modifiers);

   java_lang_reflect_Constructor::set_override(ch(), false);

   if (java_lang_reflect_Constructor::has_signature_field() &&

       method->generic_signature() != NULL) {

     Symbol*  gs = method->generic_signature();

     Handle sig = java_lang_String::create_from_symbol(gs, CHECK_NULL);

     java_lang_reflect_Constructor::set_signature(ch(), sig());

   }

   if (java_lang_reflect_Constructor::has_annotations_field()) {

     java_lang_reflect_Constructor::set_annotations(ch(), method->annotations());

   }

   if (java_lang_reflect_Constructor::has_parameter_annotations_field()) {

     java_lang_reflect_Constructor::set_parameter_annotations(ch(), method->parameter_annotations());

   }

   return ch();

 }

 oop Reflection::new_field(fieldDescriptor* fd, bool intern_name, TRAPS) {

   Symbol*  field_name = fd->name();

   Handle name;

   if (intern_name) {

     // intern_name is only true with UseNewReflection

     oop name_oop = StringTable::intern(field_name, CHECK_NULL);

     name = Handle(THREAD, name_oop);

   } else {

     name = java_lang_String::create_from_symbol(field_name, CHECK_NULL);

   }

   Symbol*  signature  = fd->signature();

   KlassHandle  holder    (THREAD, fd->field_holder());

   Handle type = new_type(signature, holder, CHECK_NULL);

   Handle rh  = java_lang_reflect_Field::create(CHECK_NULL);

   java_lang_reflect_Field::set_clazz(rh(), Klass::cast(fd->field_holder())->java_mirror());

   java_lang_reflect_Field::set_slot(rh(), fd->index());

   java_lang_reflect_Field::set_name(rh(), name());

   java_lang_reflect_Field::set_type(rh(), type());

   // Note the ACC_ANNOTATION bit, which is a per-class access flag, is never set here.

   java_lang_reflect_Field::set_modifiers(rh(), fd->access_flags().as_int() & JVM_RECOGNIZED_FIELD_MODIFIERS);

   java_lang_reflect_Field::set_override(rh(), false);

   if (java_lang_reflect_Field::has_signature_field() &&

       fd->generic_signature() != NULL) {

     Symbol*  gs = fd->generic_signature();

     Handle sig = java_lang_String::create_from_symbol(gs, CHECK_NULL);

     java_lang_reflect_Field::set_signature(rh(), sig());

   }

   if (java_lang_reflect_Field::has_annotations_field()) {

     java_lang_reflect_Field::set_annotations(rh(), fd->annotations());

   }

   return rh();

 }

 //---------------------------------------------------------------------------

 //

 // Supporting routines for old native code-based reflection (pre-JDK 1.4).

 //

 // See reflection.hpp for details.

 //

 //---------------------------------------------------------------------------

 #ifdef SUPPORT_OLD_REFLECTION

 methodHandle Reflection::resolve_interface_call(instanceKlassHandle klass, methodHandle method,

                                                 KlassHandle recv_klass, Handle receiver, TRAPS) {

   assert(!method.is_null() , "method should not be null");

   CallInfo info;

   Symbol*  signature  = method->signature();

   Symbol*  name       = method->name();

   LinkResolver::resolve_interface_call(info, receiver, recv_klass, klass,

                                        name, signature,

                                        KlassHandle(), false, true,

                                        CHECK_(methodHandle()));

   return info.selected_method();

 }

 oop Reflection::invoke(instanceKlassHandle klass, methodHandle reflected_method,

                        Handle receiver, bool override, objArrayHandle ptypes,

                        BasicType rtype, objArrayHandle args, bool is_method_invoke, TRAPS) {

   ResourceMark rm(THREAD);

   methodHandle method;      // actual method to invoke

   KlassHandle target_klass; // target klass, receiver's klass for non-static

   // Ensure klass is initialized

   klass->initialize(CHECK_NULL);

   bool is_static = reflected_method->is_static();

   if (is_static) {

     // ignore receiver argument

     method = reflected_method;

     target_klass = klass;

   } else {

     // check for null receiver

     if (receiver.is_null()) {

       THROW_0(vmSymbols::java_lang_NullPointerException());

     }

     // Check class of receiver against class declaring method

     if (!receiver->is_a(klass())) {

       THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "object is not an instance of declaring class");

     }

     // target klass is receiver's klass

     target_klass = KlassHandle(THREAD, receiver->klass());

     // no need to resolve if method is private or <init>

     if (reflected_method->is_private() || reflected_method->name() == vmSymbols::object_initializer_name()) {

       method = reflected_method;

     } else {

       // resolve based on the receiver

       if (instanceKlass::cast(reflected_method->method_holder())->is_interface()) {

         // resolve interface call

         if (ReflectionWrapResolutionErrors) {

           // new default: 6531596

           // Match resolution errors with those thrown due to reflection inlining

           // Linktime resolution & IllegalAccessCheck already done by Class.getMethod()

           method = resolve_interface_call(klass, reflected_method, target_klass, receiver, THREAD);

           if (HAS_PENDING_EXCEPTION) {

           // Method resolution threw an exception; wrap it in an InvocationTargetException

             oop resolution_exception = PENDING_EXCEPTION;

             CLEAR_PENDING_EXCEPTION;

             JavaCallArguments args(Handle(THREAD, resolution_exception));

             THROW_ARG_0(vmSymbols::java_lang_reflect_InvocationTargetException(),

                 vmSymbols::throwable_void_signature(),

                 &args);

           }

         } else {

           method = resolve_interface_call(klass, reflected_method, target_klass, receiver, CHECK_(NULL));

         }

       }  else {

         // if the method can be overridden, we resolve using the vtable index.

         int index  = reflected_method->vtable_index();

         method = reflected_method;

         if (index != methodOopDesc::nonvirtual_vtable_index) {

           // target_klass might be an arrayKlassOop but all vtables start at

           // the same place. The cast is to avoid virtual call and assertion.

           instanceKlass* inst = (instanceKlass*)target_klass()->klass_part();

           method = methodHandle(THREAD, inst->method_at_vtable(index));

         }

         if (!method.is_null()) {

           // Check for abstract methods as well

           if (method->is_abstract()) {

             // new default: 6531596

             if (ReflectionWrapResolutionErrors) {

               ResourceMark rm(THREAD);

               Handle h_origexception = Exceptions::new_exception(THREAD,

                      vmSymbols::java_lang_AbstractMethodError(),

                      methodOopDesc::name_and_sig_as_C_string(Klass::cast(target_klass()),

                      method->name(),

                      method->signature()));

               JavaCallArguments args(h_origexception);

               THROW_ARG_0(vmSymbols::java_lang_reflect_InvocationTargetException(),

                 vmSymbols::throwable_void_signature(),

                 &args);

             } else {

               ResourceMark rm(THREAD);

               THROW_MSG_0(vmSymbols::java_lang_AbstractMethodError(),

                         methodOopDesc::name_and_sig_as_C_string(Klass::cast(target_klass()),

                                                                 method->name(),

                                                                 method->signature()));

             }

           }

         }

       }

     }

   }

   // I believe this is a ShouldNotGetHere case which requires

   // an internal vtable bug. If you ever get this please let Karen know.

   if (method.is_null()) {

     ResourceMark rm(THREAD);

     THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(),

                 methodOopDesc::name_and_sig_as_C_string(Klass::cast(klass()),

                                                         reflected_method->name(),

                                                         reflected_method->signature()));

   }

   // In the JDK 1.4 reflection implementation, the security check is

   // done at the Java level

   if (!(JDK_Version::is_gte_jdk14x_version() && UseNewReflection)) {

   // Access checking (unless overridden by Method)

   if (!override) {

     if (!(klass->is_public() && reflected_method->is_public())) {

       bool access = Reflection::reflect_check_access(klass(), reflected_method->access_flags(), target_klass(), is_method_invoke, CHECK_NULL);

       if (!access) {

         return NULL; // exception

       }

     }

   }

   } // !(Universe::is_gte_jdk14x_version() && UseNewReflection)

   assert(ptypes->is_objArray(), "just checking");

   int args_len = args.is_null() ? 0 : args->length();

   // Check number of arguments

   if (ptypes->length() != args_len) {

     THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "wrong number of arguments");

   }

   // Create object to contain parameters for the JavaCall

   JavaCallArguments java_args(method->size_of_parameters());

   if (!is_static) {

     java_args.push_oop(receiver);

   }

   for (int i = 0; i < args_len; i++) {

     oop type_mirror = ptypes->obj_at(i);

     oop arg = args->obj_at(i);

     if (java_lang_Class::is_primitive(type_mirror)) {

       jvalue value;

       BasicType ptype = basic_type_mirror_to_basic_type(type_mirror, CHECK_NULL);

       BasicType atype = unbox_for_primitive(arg, &value, CHECK_NULL);

       if (ptype != atype) {

         widen(&value, atype, ptype, CHECK_NULL);

       }

       switch (ptype) {

         case T_BOOLEAN:     java_args.push_int(value.z);    break;

         case T_CHAR:        java_args.push_int(value.c);    break;

         case T_BYTE:        java_args.push_int(value.b);    break;

         case T_SHORT:       java_args.push_int(value.s);    break;

         case T_INT:         java_args.push_int(value.i);    break;

         case T_LONG:        java_args.push_long(value.j);   break;

         case T_FLOAT:       java_args.push_float(value.f);  break;

         case T_DOUBLE:      java_args.push_double(value.d); break;

         default:

           THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "argument type mismatch");

       }

     } else {

       if (arg != NULL) {

         klassOop k = java_lang_Class::as_klassOop(type_mirror);

         if (!arg->is_a(k)) {

           THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "argument type mismatch");

         }

       }

       Handle arg_handle(THREAD, arg);         // Create handle for argument

       java_args.push_oop(arg_handle); // Push handle

     }

   }

   assert(java_args.size_of_parameters() == method->size_of_parameters(), "just checking");

   // All oops (including receiver) is passed in as Handles. An potential oop is returned as an

   // oop (i.e., NOT as an handle)

   JavaValue result(rtype);

   JavaCalls::call(&result, method, &java_args, THREAD);

   if (HAS_PENDING_EXCEPTION) {

     // Method threw an exception; wrap it in an InvocationTargetException

     oop target_exception = PENDING_EXCEPTION;

     CLEAR_PENDING_EXCEPTION;

     JavaCallArguments args(Handle(THREAD, target_exception));

     THROW_ARG_0(vmSymbols::java_lang_reflect_InvocationTargetException(),

                 vmSymbols::throwable_void_signature(),

                 &args);

   } else {

     if (rtype == T_BOOLEAN || rtype == T_BYTE || rtype == T_CHAR || rtype == T_SHORT)

       narrow((jvalue*) result.get_value_addr(), rtype, CHECK_NULL);

     return box((jvalue*) result.get_value_addr(), rtype, CHECK_NULL);

   }

 }

 void Reflection::narrow(jvalue* value, BasicType narrow_type, TRAPS) {

   switch (narrow_type) {

     case T_BOOLEAN:

      value->z = (jboolean) value->i;

      return;

     case T_BYTE:

      value->b = (jbyte) value->i;

      return;

     case T_CHAR:

      value->c = (jchar) value->i;

      return;

     case T_SHORT:

      value->s = (jshort) value->i;

      return;

     default:

       break; // fail

    }

   THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "argument type mismatch");

 }

 BasicType Reflection::basic_type_mirror_to_basic_type(oop basic_type_mirror, TRAPS) {

   assert(java_lang_Class::is_primitive(basic_type_mirror), "just checking");

   return java_lang_Class::primitive_type(basic_type_mirror);

 }

 bool Reflection::match_parameter_types(methodHandle method, objArrayHandle types, int parameter_count, TRAPS) {

   int types_len = types.is_null() ? 0 : types->length();

   if (types_len != parameter_count) return false;

   if (parameter_count > 0) {

     objArrayHandle method_types = get_parameter_types(method, parameter_count, NULL, CHECK_false);

     for (int index = 0; index < parameter_count; index++) {

       if (types->obj_at(index) != method_types->obj_at(index)) {

         return false;

       }

     }

   }

   return true;

 }

 oop Reflection::new_field(FieldStream* st, TRAPS) {

   Symbol*  field_name = st->name();

   Handle name = java_lang_String::create_from_symbol(field_name, CHECK_NULL);

   Symbol*  signature = st->signature();

   Handle type = new_type(signature, st->klass(), CHECK_NULL);

   Handle rh  = java_lang_reflect_Field::create(CHECK_NULL);

   oop result = rh();

   java_lang_reflect_Field::set_clazz(result, st->klass()->java_mirror());

   java_lang_reflect_Field::set_slot(result, st->index());

   java_lang_reflect_Field::set_name(result, name());

   java_lang_reflect_Field::set_type(result, type());

   // Note the ACC_ANNOTATION bit, which is a per-class access flag, is never set here.

   java_lang_reflect_Field::set_modifiers(result, st->access_flags().as_int() & JVM_RECOGNIZED_FIELD_MODIFIERS);

   java_lang_reflect_Field::set_override(result, false);

   return result;

 }

 bool Reflection::resolve_field(Handle field_mirror, Handle& receiver, fieldDescriptor* fd, bool check_final, TRAPS) {

   if (field_mirror.is_null()) {

     THROW_(vmSymbols::java_lang_NullPointerException(), false);

   }

   instanceKlassHandle klass (THREAD, java_lang_Class::as_klassOop(java_lang_reflect_Field::clazz(field_mirror())));

   int                 slot  = java_lang_reflect_Field::slot(field_mirror());

   // Ensure klass is initialized

   klass->initialize(CHECK_false);

   fd->initialize(klass(), slot);

   bool is_static = fd->is_static();

   KlassHandle receiver_klass;

   if (is_static) {

     receiver = KlassHandle(THREAD, klass());

     receiver_klass = klass;

   } else {

     // Check object is a non-null instance of declaring class

     if (receiver.is_null()) {

       THROW_(vmSymbols::java_lang_NullPointerException(), false);

     }

     if (!receiver->is_a(klass())) {

       THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), "object is not an instance of declaring class", false);

     }

     receiver_klass = KlassHandle(THREAD, receiver->klass());

   }

   // Access checking (unless overridden by Field)

   if (!java_lang_reflect_Field::override(field_mirror())) {

     if (!(klass->is_public() && fd->is_public())) {

       bool access_check = reflect_check_access(klass(), fd->access_flags(), receiver_klass(), false, CHECK_false);

       if (!access_check) {

         return false; // exception

       }

     }

   }

   if (check_final && fd->is_final()) {

     // In 1.3 we always throw an error when attempting to set a final field.

     // In 1.2.x, this was allowed in the override bit was set by calling Field.setAccessible(true).

     // We currently maintain backwards compatibility. See bug 4250960.

     bool strict_final_check = !JDK_Version::is_jdk12x_version();

     if (strict_final_check || !java_lang_reflect_Field::override(field_mirror())) {

       THROW_MSG_(vmSymbols::java_lang_IllegalAccessException(), "field is final", false);

     }

   }

   return true;

 }

 BasicType Reflection::field_get(jvalue* value, fieldDescriptor* fd, Handle receiver)  {

   BasicType field_type = fd->field_type();

   int offset = fd->offset();

   switch (field_type) {

     case T_BOOLEAN:

       value->z = receiver->bool_field(offset);

       break;

     case T_CHAR:

       value->c = receiver->char_field(offset);

       break;

     case T_FLOAT:

       value->f = receiver->float_field(offset);

       break;

     case T_DOUBLE:

       value->d = receiver->double_field(offset);

       break;

     case T_BYTE:

       value->b = receiver->byte_field(offset);

       break;

     case T_SHORT:

       value->s = receiver->short_field(offset);

       break;

     case T_INT:

       value->i = receiver->int_field(offset);

       break;

     case T_LONG:

       value->j = receiver->long_field(offset);

       break;

     case T_OBJECT:

     case T_ARRAY:

       value->l = (jobject) receiver->obj_field(offset);

       break;

     default:

       return T_ILLEGAL;

   }

   return field_type;

 }

 void Reflection::field_set(jvalue* value, fieldDescriptor* fd, Handle receiver, BasicType value_type, TRAPS) {

   BasicType field_type = fd->field_type();

   if (field_type != value_type) {

     widen(value, value_type, field_type, CHECK);

   }

   int offset = fd->offset();

   switch (field_type) {

     case T_BOOLEAN:

       receiver->bool_field_put(offset, value->z);

       break;

     case T_CHAR:

       receiver->char_field_put(offset, value->c);

       break;

     case T_FLOAT:

       receiver->float_field_put(offset, value->f);

       break;

     case T_DOUBLE:

       receiver->double_field_put(offset, value->d);

       break;

     case T_BYTE:

       receiver->byte_field_put(offset, value->b);

       break;

     case T_SHORT:

       receiver->short_field_put(offset, value->s);

       break;

     case T_INT:

       receiver->int_field_put(offset, value->i);

       break;

     case T_LONG:

       receiver->long_field_put(offset, value->j);

       break;

     case T_OBJECT:

     case T_ARRAY: {

       Handle obj(THREAD, (oop) value->l);

       if (obj.not_null()) {

         Symbol*  signature = fd->signature();

         Handle       loader   (THREAD, fd->loader());

         Handle       protect  (THREAD, Klass::cast(fd->field_holder())->protection_domain());

         klassOop k = SystemDictionary::resolve_or_fail(signature, loader, protect, true, CHECK); // may block

         if (!obj->is_a(k)) {

           THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "field type mismatch");

         }

       }

       receiver->obj_field_put(offset, obj());

       break;

     }

     default:

       THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "field type mismatch");

   }

 }

 oop Reflection::reflect_field(oop mirror, Symbol* field_name, jint which, TRAPS) {

   // Exclude primitive types and array types

   if (java_lang_Class::is_primitive(mirror))                             return NULL;

   if (Klass::cast(java_lang_Class::as_klassOop(mirror))->oop_is_array()) return NULL;

   instanceKlassHandle k(THREAD, java_lang_Class::as_klassOop(mirror));

   bool local_fields_only = (which == DECLARED);

   // Ensure class is linked

   k->link_class(CHECK_NULL);

   // Search class and interface fields

   for (FieldStream st(k, local_fields_only, false); !st.eos(); st.next()) {

     if (st.name() == field_name) {

       if (local_fields_only || st.access_flags().is_public()) {

         return new_field(&st, THREAD);

       }

     }

   }

   return NULL;

 }

 objArrayOop Reflection::reflect_fields(oop mirror, jint which, TRAPS) {

   // Exclude primitive types and array types

   if (java_lang_Class::is_primitive(mirror)

       || Klass::cast(java_lang_Class::as_klassOop(mirror))->oop_is_array()) {

     Symbol* name = vmSymbols::java_lang_reflect_Field();

     klassOop klass = SystemDictionary::resolve_or_fail(name, true, CHECK_NULL);

     return oopFactory::new_objArray(klass, 0, CHECK_NULL);  // Return empty array

   }

   instanceKlassHandle k(THREAD, java_lang_Class::as_klassOop(mirror));

   // Ensure class is linked

   k->link_class(CHECK_NULL);

   bool local_fields_only = (which == DECLARED);

   int count = 0;

   { // Compute fields count for class and interface fields

     for (FieldStream st(k, local_fields_only, false); !st.eos(); st.next()) {

       if (local_fields_only || st.access_flags().is_public()) {

         count++;

       }

     }

   }

   // Allocate result

   Symbol* name = vmSymbols::java_lang_reflect_Field();

   klassOop klass = SystemDictionary::resolve_or_fail(name, true, CHECK_NULL);

   objArrayOop r = oopFactory::new_objArray(klass, count, CHECK_NULL);

   objArrayHandle result (THREAD, r);

   // Fill in results backwards

   {

     for (FieldStream st(k, local_fields_only, false); !st.eos(); st.next()) {

       if (local_fields_only || st.access_flags().is_public()) {

         oop field = new_field(&st, CHECK_NULL);

         result->obj_at_put(--count, field);

       }

     }

     assert(count == 0, "just checking");

   }

   return result();

 }

 oop Reflection::reflect_method(oop mirror, Symbol* method_name, objArrayHandle types, jint which, TRAPS) {

   if (java_lang_Class::is_primitive(mirror))  return NULL;

   klassOop klass = java_lang_Class::as_klassOop(mirror);

   if (Klass::cast(klass)->oop_is_array() && which == MEMBER_DECLARED)  return NULL;

   if (Klass::cast(java_lang_Class::as_klassOop(mirror))->oop_is_array()) {

     klass = SystemDictionary::Object_klass();

   }

   instanceKlassHandle h_k(THREAD, klass);

   // Ensure klass is linked (need not be initialized)

   h_k->link_class(CHECK_NULL);

   // For interfaces include static initializers under jdk1.2.x (since classic does that)

   bool include_clinit = JDK_Version::is_jdk12x_version() && h_k->is_interface();

   switch (which) {

     case MEMBER_PUBLIC:

       // First the public non-static methods (works if method holder is an interface)

       // Note that we can ignore checks for overridden methods, since we go up the hierarchy.

       {

         for (MethodStream st(h_k, false, false); !st.eos(); st.next()) {

           methodHandle m(THREAD, st.method());

           // For interfaces include static initializers since classic does that!

           if (method_name == m->name() && (include_clinit || (m->is_public() && !m->is_static() && !m->is_initializer()))) {

             Symbol*  signature = m->signature();

             bool parameter_match = match_parameter_types(m, types, ArgumentCount(signature).size(), CHECK_NULL);

             if (parameter_match) {

               return new_method(m, false, false, THREAD);

             }

           }

         }

       }

       // Then the public static methods (works if method holder is an interface)

       {

         for (MethodStream st(h_k, false, false); !st.eos(); st.next()) {

           methodHandle m(THREAD, st.method());

           if (method_name == m->name() && m->is_public() && m->is_static() && !m->is_initializer()) {

             Symbol*  signature = m->signature();

             bool parameter_match = match_parameter_types(m, types, ArgumentCount(signature).size(), CHECK_NULL);

             if (parameter_match) {

               return new_method(m, false, false, THREAD);

             }

           }

         }

       }

       break;

     case MEMBER_DECLARED:

       // All local methods

       {

         for (MethodStream st(h_k, true, true); !st.eos(); st.next()) {

           methodHandle m(THREAD, st.method());

           if (method_name == m->name() && !m->is_initializer()) {

             Symbol*  signature = m->signature();

             bool parameter_match = match_parameter_types(m, types, ArgumentCount(signature).size(), CHECK_NULL);

             if (parameter_match) {

               return new_method(m, false, false, THREAD);

             }

           }

         }

       }

       break;

     default:

       break;

   }

   return NULL;

 }

 objArrayOop Reflection::reflect_methods(oop mirror, jint which, TRAPS) {

   // Exclude primitive types

   if (java_lang_Class::is_primitive(mirror) ||

      (Klass::cast(java_lang_Class::as_klassOop(mirror))->oop_is_array() && (which == MEMBER_DECLARED))) {

     klassOop klass = SystemDictionary::reflect_Method_klass();

     return oopFactory::new_objArray(klass, 0, CHECK_NULL);  // Return empty array

   }

   klassOop klass = java_lang_Class::as_klassOop(mirror);

   if (Klass::cast(java_lang_Class::as_klassOop(mirror))->oop_is_array()) {

     klass = SystemDictionary::Object_klass();

   }

   instanceKlassHandle h_k(THREAD, klass);

   // Ensure klass is linked (need not be initialized)

   h_k->link_class(CHECK_NULL);

   // We search the (super)interfaces only if h_k is an interface itself

   bool is_interface = h_k->is_interface();

   // For interfaces include static initializers under jdk1.2.x (since classic does that)

   bool include_clinit = JDK_Version::is_jdk12x_version() && is_interface;

   switch (which) {

     case MEMBER_PUBLIC:

       {

         // Count public methods (non-static and static)

         int count = 0;

         {

           for (MethodStream st(h_k, false, false); !st.eos(); st.next()) {

             methodOop m = st.method();

             // For interfaces include static initializers since classic does that!

             if (include_clinit || (!m->is_initializer() && m->is_public() && !m->is_overridden_in(h_k()))) {

               count++;

             }

           }

         }

         // Allocate result

         klassOop klass = SystemDictionary::reflect_Method_klass();

         objArrayOop r = oopFactory::new_objArray(klass, count, CHECK_NULL);

         objArrayHandle h_result (THREAD, r);

         // Fill in results backwards

         {

           // First the non-static public methods

           for (MethodStream st(h_k, false, false); !st.eos(); st.next()) {

             methodHandle m (THREAD, st.method());

             if (!m->is_static() && !m->is_initializer() && m->is_public() && !m->is_overridden_in(h_k())) {

               oop method = new_method(m, false, false, CHECK_NULL);

               if (method == NULL) {

                 return NULL;

               } else {

                 h_result->obj_at_put(--count, method);

               }

             }

           }

         }

         {

           // Then the static public methods

           for (MethodStream st(h_k, false, !is_interface); !st.eos(); st.next()) {

             methodHandle m (THREAD, st.method());

             if (m->is_static() && (include_clinit || (!m->is_initializer()) && m->is_public() && !m->is_overridden_in(h_k()))) {

               oop method = new_method(m, false, false, CHECK_NULL);

               if (method == NULL) {

                 return NULL;

               } else {

                 h_result->obj_at_put(--count, method);

               }

             }

           }

         }

         assert(count == 0, "just checking");

         return h_result();

       }

     case MEMBER_DECLARED:

       {

         // Count all methods

         int count = 0;

         {

           for (MethodStream st(h_k, true, !is_interface); !st.eos(); st.next()) {

             methodOop m = st.method();

             if (!m->is_initializer()) {

               count++;

             }

           }

         }

         // Allocate result

         klassOop klass = SystemDictionary::reflect_Method_klass();

         objArrayOop r = oopFactory::new_objArray(klass, count, CHECK_NULL);

         objArrayHandle h_result (THREAD, r);

         // Fill in results backwards

         {

           for (MethodStream st(h_k, true, true); !st.eos(); st.next()) {

             methodHandle m (THREAD, st.method());

             if (!m->is_initializer()) {

               oop method = new_method(m, false, false, CHECK_NULL);

               if (method == NULL) {

                 return NULL;

               } else {

                 h_result->obj_at_put(--count, method);

               }

             }

           }

         }

         assert(count == 0, "just checking");

         return h_result();

       }

   }

   ShouldNotReachHere();

   return NULL;

 }

 oop Reflection::reflect_constructor(oop mirror, objArrayHandle types, jint which, TRAPS) {

   // Exclude primitive, interface and array types

   bool prim = java_lang_Class::is_primitive(mirror);

   Klass* klass = prim ? NULL : Klass::cast(java_lang_Class::as_klassOop(mirror));

   if (prim || klass->is_interface() || klass->oop_is_array()) return NULL;

   // Must be instance klass

   instanceKlassHandle h_k(THREAD, java_lang_Class::as_klassOop(mirror));

   // Ensure klass is linked (need not be initialized)

   h_k->link_class(CHECK_NULL);

   bool local_only = (which == MEMBER_DECLARED);

   for (MethodStream st(h_k, true, true); !st.eos(); st.next()) {

     methodHandle m(THREAD, st.method());

     if (m->name() == vmSymbols::object_initializer_name() && (local_only || m->is_public())) {

       Symbol*  signature = m->signature();

       bool parameter_match = match_parameter_types(m, types, ArgumentCount(signature).size(), CHECK_NULL);

       if (parameter_match) {

         return new_constructor(m, THREAD);

       }

     }

   }

   return NULL;

 }

 objArrayOop Reflection::reflect_constructors(oop mirror, jint which, TRAPS) {

   // Exclude primitive, interface and array types

   bool prim  = java_lang_Class::is_primitive(mirror);

   Klass* k = prim ? NULL : Klass::cast(java_lang_Class::as_klassOop(mirror));

   if (prim || k->is_interface() || k->oop_is_array()) {

     return oopFactory::new_objArray(SystemDictionary::reflect_Constructor_klass(), 0, CHECK_NULL);  // Return empty array

   }

   // Must be instanceKlass at this point

   instanceKlassHandle h_k(THREAD, java_lang_Class::as_klassOop(mirror));

   // Ensure klass is linked (need not be initialized)

   h_k->link_class(CHECK_NULL);

   bool local_only = (which == MEMBER_DECLARED);

   int count = 0;

   {

     for (MethodStream st(h_k, true, true); !st.eos(); st.next()) {

       methodOop m = st.method();

       if (m->name() == vmSymbols::object_initializer_name() && (local_only || m->is_public())) {

         count++;

       }

     }

   }

   // Allocate result

   Symbol* name = vmSymbols::java_lang_reflect_Constructor();

   klassOop klass = SystemDictionary::resolve_or_fail(name, true, CHECK_NULL);

   objArrayOop r = oopFactory::new_objArray(klass, count, CHECK_NULL);

   objArrayHandle h_result (THREAD, r);

   // Fill in results backwards

   {

     for (MethodStream st(h_k, true, true); !st.eos(); st.next()) {

       methodHandle m (THREAD, st.method());

       if (m->name() == vmSymbols::object_initializer_name() && (local_only || m->is_public())) {

         oop constr = new_constructor(m, CHECK_NULL);

         if (constr == NULL) {

           return NULL;

         } else {

           h_result->obj_at_put(--count, constr);

         }

       }

     }

     assert(count == 0, "just checking");

   }

   return h_result();

 }

 // This would be nicer if, say, java.lang.reflect.Method was a subclass

 // of java.lang.reflect.Constructor

 oop Reflection::invoke_method(oop method_mirror, Handle receiver, objArrayHandle args, TRAPS) {

   oop mirror             = java_lang_reflect_Method::clazz(method_mirror);

   int slot               = java_lang_reflect_Method::slot(method_mirror);

   bool override          = java_lang_reflect_Method::override(method_mirror) != 0;

   objArrayHandle ptypes(THREAD, objArrayOop(java_lang_reflect_Method::parameter_types(method_mirror)));

   oop return_type_mirror = java_lang_reflect_Method::return_type(method_mirror);

   BasicType rtype;

   if (java_lang_Class::is_primitive(return_type_mirror)) {

     rtype = basic_type_mirror_to_basic_type(return_type_mirror, CHECK_NULL);

   } else {

     rtype = T_OBJECT;

   }

   instanceKlassHandle klass(THREAD, java_lang_Class::as_klassOop(mirror));

   methodOop m = klass->method_with_idnum(slot);

   if (m == NULL) {

     THROW_MSG_0(vmSymbols::java_lang_InternalError(), "invoke");

   }

   methodHandle method(THREAD, m);

   return invoke(klass, method, receiver, override, ptypes, rtype, args, true, THREAD);

 }

 oop Reflection::invoke_constructor(oop constructor_mirror, objArrayHandle args, TRAPS) {

   oop mirror             = java_lang_reflect_Constructor::clazz(constructor_mirror);

   int slot               = java_lang_reflect_Constructor::slot(constructor_mirror);

   bool override          = java_lang_reflect_Constructor::override(constructor_mirror) != 0;

   objArrayHandle ptypes(THREAD, objArrayOop(java_lang_reflect_Constructor::parameter_types(constructor_mirror)));

   instanceKlassHandle klass(THREAD, java_lang_Class::as_klassOop(mirror));

   methodOop m = klass->method_with_idnum(slot);

   if (m == NULL) {

     THROW_MSG_0(vmSymbols::java_lang_InternalError(), "invoke");

   }

   methodHandle method(THREAD, m);

   assert(method->name() == vmSymbols::object_initializer_name(), "invalid constructor");

   // Make sure klass gets initialize

   klass->initialize(CHECK_NULL);

   // Create new instance (the receiver)

   klass->check_valid_for_instantiation(false, CHECK_NULL);

   Handle receiver = klass->allocate_instance_handle(CHECK_NULL);

   // Ignore result from call and return receiver

   invoke(klass, method, receiver, override, ptypes, T_VOID, args, false, CHECK_NULL);

   return receiver();

 }

 #endif /* SUPPORT_OLD_REFLECTION */