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      1 /*
      2  * Copyright (C) 2003, 2006 Apple Computer, Inc.  All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions
      6  * are met:
      7  * 1. Redistributions of source code must retain the above copyright
      8  *    notice, this list of conditions and the following disclaimer.
      9  * 2. Redistributions in binary form must reproduce the above copyright
     10  *    notice, this list of conditions and the following disclaimer in the
     11  *    documentation and/or other materials provided with the distribution.
     12  *
     13  * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
     14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
     17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
     18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
     20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
     21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     24  */
     25 
     26 #include "config.h"
     27 
     28 #if ENABLE(NETSCAPE_PLUGIN_API)
     29 
     30 #include "c_class.h"
     31 
     32 #include "c_instance.h"
     33 #include "c_runtime.h"
     34 #include "npruntime_impl.h"
     35 #include <runtime/ScopeChain.h>
     36 #include <runtime/Identifier.h>
     37 #include <runtime/JSLock.h>
     38 #include <runtime/JSObject.h>
     39 #include <wtf/text/StringHash.h>
     40 
     41 namespace JSC { namespace Bindings {
     42 
     43 CClass::CClass(NPClass* aClass)
     44 {
     45     _isa = aClass;
     46 }
     47 
     48 CClass::~CClass()
     49 {
     50     JSLock lock(SilenceAssertionsOnly);
     51 
     52     deleteAllValues(_methods);
     53     _methods.clear();
     54 
     55     deleteAllValues(_fields);
     56     _fields.clear();
     57 }
     58 
     59 typedef HashMap<NPClass*, CClass*> ClassesByIsAMap;
     60 static ClassesByIsAMap* classesByIsA = 0;
     61 
     62 CClass* CClass::classForIsA(NPClass* isa)
     63 {
     64     if (!classesByIsA)
     65         classesByIsA = new ClassesByIsAMap;
     66 
     67     CClass* aClass = classesByIsA->get(isa);
     68     if (!aClass) {
     69         aClass = new CClass(isa);
     70         classesByIsA->set(isa, aClass);
     71     }
     72 
     73     return aClass;
     74 }
     75 
     76 MethodList CClass::methodsNamed(const Identifier& identifier, Instance* instance) const
     77 {
     78     MethodList methodList;
     79 
     80     Method* method = _methods.get(identifier.ustring().impl());
     81     if (method) {
     82         methodList.append(method);
     83         return methodList;
     84     }
     85 
     86     NPIdentifier ident = _NPN_GetStringIdentifier(identifier.ascii().data());
     87     const CInstance* inst = static_cast<const CInstance*>(instance);
     88     NPObject* obj = inst->getObject();
     89     if (_isa->hasMethod && _isa->hasMethod(obj, ident)){
     90         Method* aMethod = new CMethod(ident); // deleted in the CClass destructor
     91         {
     92             JSLock lock(SilenceAssertionsOnly);
     93             _methods.set(identifier.ustring().impl(), aMethod);
     94         }
     95         methodList.append(aMethod);
     96     }
     97 
     98     return methodList;
     99 }
    100 
    101 Field* CClass::fieldNamed(const Identifier& identifier, Instance* instance) const
    102 {
    103     Field* aField = _fields.get(identifier.ustring().impl());
    104     if (aField)
    105         return aField;
    106 
    107     NPIdentifier ident = _NPN_GetStringIdentifier(identifier.ascii().data());
    108     const CInstance* inst = static_cast<const CInstance*>(instance);
    109     NPObject* obj = inst->getObject();
    110     if (_isa->hasProperty && _isa->hasProperty(obj, ident)){
    111         aField = new CField(ident); // deleted in the CClass destructor
    112         {
    113             JSLock lock(SilenceAssertionsOnly);
    114             _fields.set(identifier.ustring().impl(), aField);
    115         }
    116     }
    117     return aField;
    118 }
    119 
    120 } } // namespace JSC::Bindings
    121 
    122 #endif // ENABLE(NETSCAPE_PLUGIN_API)
    123