LCOV - code coverage report
Current view: directory - toolkit/components/ctypes - ctypes.cpp (source / functions) Found Hit Coverage
Test: app.info Lines: 44 35 79.5 %
Date: 2012-06-02 Functions: 10 10 100.0 %

       1                 : /* -*-  Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2; -*- */
       2                 : /* ***** BEGIN LICENSE BLOCK *****
       3                 :  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
       4                 :  *
       5                 :  * The contents of this file are subject to the Mozilla Public License Version
       6                 :  * 1.1 (the "License"); you may not use this file except in compliance with
       7                 :  * the License. You may obtain a copy of the License at
       8                 :  * http://www.mozilla.org/MPL/
       9                 :  *
      10                 :  * Software distributed under the License is distributed on an "AS IS" basis,
      11                 :  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
      12                 :  * for the specific language governing rights and limitations under the
      13                 :  * License.
      14                 :  *
      15                 :  * The Original Code is js-ctypes.
      16                 :  *
      17                 :  * The Initial Developer of the Original Code is
      18                 :  * The Mozilla Foundation <http://www.mozilla.org/>.
      19                 :  * Portions created by the Initial Developer are Copyright (C) 2009
      20                 :  * the Initial Developer. All Rights Reserved.
      21                 :  *
      22                 :  * Contributor(s):
      23                 :  *  Mark Finkle <mark.finkle@gmail.com>, <mfinkle@mozilla.com>
      24                 :  *  Dan Witte <dwitte@mozilla.com>
      25                 :  *
      26                 :  * Alternatively, the contents of this file may be used under the terms of
      27                 :  * either the GNU General Public License Version 2 or later (the "GPL"), or
      28                 :  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
      29                 :  * in which case the provisions of the GPL or the LGPL are applicable instead
      30                 :  * of those above. If you wish to allow use of your version of this file only
      31                 :  * under the terms of either the GPL or the LGPL, and not to allow others to
      32                 :  * use your version of this file under the terms of the MPL, indicate your
      33                 :  * decision by deleting the provisions above and replace them with the notice
      34                 :  * and other provisions required by the GPL or the LGPL. If you do not delete
      35                 :  * the provisions above, a recipient may use your version of this file under
      36                 :  * the terms of any one of the MPL, the GPL or the LGPL.
      37                 :  *
      38                 :  * ***** END LICENSE BLOCK ***** */
      39                 : 
      40                 : #include "ctypes.h"
      41                 : #include "jsapi.h"
      42                 : #include "mozilla/ModuleUtils.h"
      43                 : #include "nsMemory.h"
      44                 : #include "nsString.h"
      45                 : #include "nsNativeCharsetUtils.h"
      46                 : 
      47                 : #define JSCTYPES_CONTRACTID \
      48                 :   "@mozilla.org/jsctypes;1"
      49                 : 
      50                 : 
      51                 : #define JSCTYPES_CID \
      52                 : { 0xc797702, 0x1c60, 0x4051, { 0x9d, 0xd7, 0x4d, 0x74, 0x5, 0x60, 0x56, 0x42 } }
      53                 : 
      54                 : namespace mozilla {
      55                 : namespace ctypes {
      56                 : 
      57                 : static char*
      58              57 : UnicodeToNative(JSContext *cx, const jschar *source, size_t slen)
      59                 : {
      60             114 :   nsCAutoString native;
      61             114 :   nsDependentString unicode(reinterpret_cast<const PRUnichar*>(source), slen);
      62              57 :   nsresult rv = NS_CopyUnicodeToNative(unicode, native);
      63              57 :   if (NS_FAILED(rv)) {
      64               0 :     JS_ReportError(cx, "could not convert string to native charset");
      65               0 :     return NULL;
      66                 :   }
      67                 : 
      68              57 :   char* result = static_cast<char*>(JS_malloc(cx, native.Length() + 1));
      69              57 :   if (!result)
      70               0 :     return NULL;
      71                 : 
      72              57 :   memcpy(result, native.get(), native.Length() + 1);
      73              57 :   return result;
      74                 : }
      75                 : 
      76                 : static JSCTypesCallbacks sCallbacks = {
      77                 :   UnicodeToNative
      78                 : };
      79                 : 
      80             548 : NS_GENERIC_FACTORY_CONSTRUCTOR(Module)
      81                 : 
      82            7672 : NS_IMPL_ISUPPORTS1(Module, nsIXPCScriptable)
      83                 : 
      84             274 : Module::Module()
      85                 : {
      86             274 : }
      87                 : 
      88             274 : Module::~Module()
      89                 : {
      90             274 : }
      91                 : 
      92                 : #define XPC_MAP_CLASSNAME Module
      93                 : #define XPC_MAP_QUOTED_CLASSNAME "Module"
      94                 : #define XPC_MAP_WANT_CALL
      95                 : #define XPC_MAP_FLAGS nsIXPCScriptable::WANT_CALL
      96                 : #include "xpc_map_end.h"
      97                 : 
      98                 : static JSBool
      99            1096 : SealObjectAndPrototype(JSContext* cx, JSObject* parent, const char* name)
     100                 : {
     101                 :   jsval prop;
     102            1096 :   if (!JS_GetProperty(cx, parent, name, &prop))
     103               0 :     return false;
     104                 : 
     105            1096 :   JSObject* obj = JSVAL_TO_OBJECT(prop);
     106            1096 :   if (!JS_GetProperty(cx, obj, "prototype", &prop))
     107               0 :     return false;
     108                 : 
     109            1096 :   JSObject* prototype = JSVAL_TO_OBJECT(prop);
     110            1096 :   return JS_FreezeObject(cx, obj) && JS_FreezeObject(cx, prototype);
     111                 : }
     112                 : 
     113                 : static JSBool
     114             274 : InitAndSealCTypesClass(JSContext* cx, JSObject* global)
     115                 : {
     116                 :   // Init the ctypes object.
     117             274 :   if (!JS_InitCTypesClass(cx, global))
     118               0 :     return false;
     119                 : 
     120                 :   // Set callbacks for charset conversion and such.
     121                 :   jsval ctypes;
     122             274 :   if (!JS_GetProperty(cx, global, "ctypes", &ctypes))
     123               0 :     return false;
     124                 : 
     125             274 :   JS_SetCTypesCallbacks(JSVAL_TO_OBJECT(ctypes), &sCallbacks);
     126                 : 
     127                 :   // Seal up Object, Function, Array and Error and their prototypes.  (This
     128                 :   // single object instance is shared amongst everyone who imports the ctypes
     129                 :   // module.)
     130            1096 :   if (!SealObjectAndPrototype(cx, global, "Object") ||
     131             274 :       !SealObjectAndPrototype(cx, global, "Function") ||
     132             274 :       !SealObjectAndPrototype(cx, global, "Array") ||
     133             274 :       !SealObjectAndPrototype(cx, global, "Error"))
     134               0 :     return false;
     135                 : 
     136                 :   // Finally, seal the global object, for good measure. (But not recursively;
     137                 :   // this breaks things.)
     138             274 :   return JS_FreezeObject(cx, global);
     139                 : }
     140                 : 
     141                 : NS_IMETHODIMP
     142             274 : Module::Call(nsIXPConnectWrappedNative* wrapper,
     143                 :              JSContext* cx,
     144                 :              JSObject* obj,
     145                 :              PRUint32 argc,
     146                 :              jsval* argv,
     147                 :              jsval* vp,
     148                 :              bool* _retval)
     149                 : {
     150             274 :   JSObject* global = JS_GetGlobalForScopeChain(cx);
     151             274 :   if (!global)
     152               0 :     return NS_ERROR_NOT_AVAILABLE;
     153                 : 
     154             274 :   *_retval = InitAndSealCTypesClass(cx, global);
     155             274 :   return NS_OK;
     156                 : }
     157                 : 
     158                 : }
     159                 : }
     160                 : 
     161                 : NS_DEFINE_NAMED_CID(JSCTYPES_CID);
     162                 : 
     163                 : static const mozilla::Module::CIDEntry kCTypesCIDs[] = {
     164                 :   { &kJSCTYPES_CID, false, NULL, mozilla::ctypes::ModuleConstructor },
     165                 :   { NULL }
     166                 : };
     167                 : 
     168                 : static const mozilla::Module::ContractIDEntry kCTypesContracts[] = {
     169                 :   { JSCTYPES_CONTRACTID, &kJSCTYPES_CID },
     170                 :   { NULL }
     171                 : };
     172                 : 
     173                 : static const mozilla::Module kCTypesModule = {
     174                 :   mozilla::Module::kVersion,
     175                 :   kCTypesCIDs,
     176                 :   kCTypesContracts
     177                 : };
     178                 : 
     179                 : NSMODULE_DEFN(jsctypes) = &kCTypesModule;

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