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      1 /*
      2  * Copyright (C) 2008 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 /*
     18  * java.lang.reflect.Constructor
     19  */
     20 #include "Dalvik.h"
     21 #include "native/InternalNativePriv.h"
     22 
     23 
     24 /*
     25  * public int constructNative(Object[] args, Class declaringClass,
     26  *     Class[] parameterTypes, int slot, boolean noAccessCheck)
     27  *
     28  * We get here through Constructor.newInstance().  The Constructor object
     29  * would not be available if the constructor weren't public (per the
     30  * definition of Class.getConstructor), so we can skip the method access
     31  * check.  We can also safely assume the constructor isn't associated
     32  * with an interface, array, or primitive class.
     33  */
     34 static void Dalvik_java_lang_reflect_Constructor_constructNative(
     35     const u4* args, JValue* pResult)
     36 {
     37     // ignore thisPtr in args[0]
     38     ArrayObject* argList = (ArrayObject*) args[1];
     39     ClassObject* declaringClass = (ClassObject*) args[2];
     40     ArrayObject* params = (ArrayObject*) args[3];
     41     int slot = args[4];
     42     bool noAccessCheck = (args[5] != 0);
     43     Object* newObj;
     44     Method* meth;
     45 
     46     if (dvmIsAbstractClass(declaringClass)) {
     47         dvmThrowInstantiationException(declaringClass, NULL);
     48         RETURN_VOID();
     49     }
     50 
     51     /* initialize the class if it hasn't been already */
     52     if (!dvmIsClassInitialized(declaringClass)) {
     53         if (!dvmInitClass(declaringClass)) {
     54             ALOGW("Class init failed in Constructor.constructNative (%s)",
     55                 declaringClass->descriptor);
     56             assert(dvmCheckException(dvmThreadSelf()));
     57             RETURN_VOID();
     58         }
     59     }
     60 
     61     newObj = dvmAllocObject(declaringClass, ALLOC_DEFAULT);
     62     if (newObj == NULL)
     63         RETURN_PTR(NULL);
     64 
     65     meth = dvmSlotToMethod(declaringClass, slot);
     66     assert(meth != NULL);
     67 
     68     (void) dvmInvokeMethod(newObj, meth, argList, params, NULL, noAccessCheck);
     69     dvmReleaseTrackedAlloc(newObj, NULL);
     70     RETURN_PTR(newObj);
     71 }
     72 
     73 const DalvikNativeMethod dvm_java_lang_reflect_Constructor[] = {
     74     { "constructNative",    "([Ljava/lang/Object;Ljava/lang/Class;[Ljava/lang/Class;IZ)Ljava/lang/Object;",
     75         Dalvik_java_lang_reflect_Constructor_constructNative },
     76     { NULL, NULL, NULL },
     77 };
     78