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DEFINITIONS
This source file includes following definitions.
- call
- callProperty
- setMultinameProperty
- getAtomProperty
- BEGIN_NATIVE_MAP
- create
- fill
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is [ActiveScripting implemented with Tamarin].
*
* The Initial Developer of the Original Code is Mozilla Corp.
* Portions created by the Initial Developer are Copyright (C) 2007
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Mark Hammond
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include "axtam.h"
#include "IDispatchConsumer.h"
#include <stdlib.h>
namespace axtam
{
IDispatchConsumer::IDispatchConsumer(VTable* vtable, ScriptObject* prototype, IDispatch *pDisp)
: IUnknownConsumer(vtable, prototype, pDisp, __uuidof(IDispatch))
{
AvmAssert(traits()->sizeofInstance == sizeof(IDispatchConsumer));
}
Atom IDispatchConsumer::call(int argc, Atom* argv)
{
CComVariant ret;
EXCEPINFO ei = {0,0,0,0,0};
AXTam *axcore = (AXTam *)core();
DISPPARAMS_helper params(axcore, argc, argv);
IDispatch *disp = (IDispatch *)getDispatch();
HRESULT hr = disp->Invoke(DISPID_VALUE, IID_NULL, 0, DISPATCH_METHOD, params, &ret, &ei, NULL);
if (FAILED(hr)) {
// EXCEPINFO ownership taken by throwCOMConsumerError
ret.Clear();
params.clear();
axcore->throwCOMConsumerError(hr, &ei);
}
return axcore->toAtom(ret);
}
Atom IDispatchConsumer::callProperty(avmplus::Multiname *name, int argc, avmplus::Atom *argv)
{
// Prevent recursion death due to global being the IDispatchConsumer
// (we ask window for object, it asks our IDispatch, etc), existing
// expandos get preference.
if (hasMultinameProperty(name))
return ScriptObject::callProperty(name, argc, argv);
// Not sure how to best handle this re 'builtin' names, such as toString()
// XXX - need a map of DISPIDs to speed things up, and/or optimizations
// using the typelib.
DISPID id;
AXTam *axcore = (AXTam *)core();
IDispatch *disp = (IDispatch *)getDispatch();
OLECHAR *olename = (OLECHAR *)name->getName()->c_str();
HRESULT hr = disp->GetIDsOfNames(IID_NULL, &olename, 1, 0, &id);
if (hr == DISP_E_UNKNOWNNAME) {
// not a name this object has - see if its builtin/expando.
return ScriptObject::callProperty(name, argc, argv);
}
if (FAILED(hr))
axcore->throwCOMConsumerError(hr);
// Now create args for the call.
EXCEPINFO ei = {0,0,0,0,0};
DISPPARAMS_helper params(axcore, argc, argv);
CComVariant ret;
hr = disp->Invoke(id, IID_NULL, 0, DISPATCH_METHOD, params, &ret, &ei, NULL);
// Consider, eg, 'WSH.Arguments(0)' - we are here attempting to call an
// 'Arguments' method - but what we actually *want* is a property-get for
// 'Arguments', then a DISPID_DEFAULT call on that. So do that :)
if (hr == DISP_E_MEMBERNOTFOUND) {
DISPPARAMS get_params = {NULL, NULL, 0, 0};
CComVariant sub;
hr = disp->Invoke(id, IID_NULL, 0, DISPATCH_PROPERTYGET, &get_params, &sub, &ei, NULL);
if (SUCCEEDED(hr)) {
CComPtr<IDispatch> disp_sub;
if (sub.vt == VT_DISPATCH)
disp_sub = (IDispatch *)sub.pdispVal;
else if (sub.vt == VT_UNKNOWN)
disp_sub = CComQIPtr<IDispatch, &IID_IDispatch>(sub.punkVal);
if (disp_sub==0) {
// Its a normal value (eg, string, int - but not "callable")
AvmDebugMsg(false, "property get for '%S' returned something not callable (vt=%d)",
olename, sub.vt);
ret.Clear();
params.clear();
axcore->toplevel->throwTypeError(kCallOfNonFunctionError, axcore->toErrorString(name));
}
// finally have an IDispatch we can retry the call on.
hr = disp_sub->Invoke(DISPID_VALUE, IID_NULL, 0, DISPATCH_METHOD, params, &ret, &ei, NULL);
}
}
if (FAILED(hr)) {
ret.Clear();
params.clear();
// EXCEPINFO ownership taken by throwCOMConsumerError
axcore->throwCOMConsumerError(hr, &ei);
}
return axcore->toAtom(ret);
}
void IDispatchConsumer::setMultinameProperty(Multiname* name, Atom value)
{
// its possible we should just call setStringProperty(), which calls
// setAtomProperty(), and we should add our impl there - but let's see
// if we can get away without that for now...
DISPID id;
AXTam *axcore = (AXTam *)core();
OLECHAR *olename = (OLECHAR *)name->getName()->c_str();
IDispatch *disp = (IDispatch *)getDispatch();
HRESULT hr = disp->GetIDsOfNames(IID_NULL, &olename, 1, 0, &id);
if (hr == DISP_E_UNKNOWNNAME) {
// not a name this object has - set it as an 'expando'
return ScriptObject::setMultinameProperty(name, value);
}
if (FAILED(hr))
axcore->throwCOMConsumerError(hr);
// Set the value into a DISPPARAMS and set it.
EXCEPINFO ei = {0,0,0,0,0};
CComVariant arg = axcore->atomToVARIANT(value);
DISPPARAMS params = {&arg, NULL, 1, 0};
hr = disp->Invoke(id, IID_NULL, 0, DISPATCH_PROPERTYPUT, ¶ms, NULL, &ei, NULL);
if (FAILED(hr))
axcore->throwCOMConsumerError(hr, &ei);
}
Atom IDispatchConsumer::getAtomProperty(Atom name) const {
AXTam *axcore = (AXTam *)core();
IDispatch *disp = (IDispatch *)getDispatch();
if (!axcore->isString(name))
axcore->toplevel->throwTypeError(kCheckTypeFailedError);
DISPID id;
// Prevent recursion death due to global being the IDispatchConsumer
// (we ask window for object, it asks our IDispatch, etc), existing
// expandos get preference.
if (hasAtomProperty(name))
return ScriptObject::getAtomProperty(name);
OLECHAR *olename = (OLECHAR *)axcore->atomToString(name)->c_str();
HRESULT hr = disp->GetIDsOfNames(IID_NULL, &olename, 1, 0, &id);
if (hr == DISP_E_UNKNOWNNAME) {
// not a name this object has and already checked expandos
return undefinedAtom;
}
if (FAILED(hr))
axcore->throwCOMConsumerError(hr);
EXCEPINFO ei = {0,0,0,0,0};
DISPPARAMS params = {NULL, NULL, 0, 0};
CComVariant ret;
hr = disp->Invoke(id, IID_NULL, 0, DISPATCH_PROPERTYGET, ¶ms, &ret, &ei, NULL);
if (FAILED(hr)) {
ret.Clear();
axcore->throwCOMConsumerError(hr, &ei);
}
return axcore->toAtom(ret);
}
BEGIN_NATIVE_MAP(IDispatchConsumerClass)
END_NATIVE_MAP()
IDispatchConsumerClass::IDispatchConsumerClass(VTable *cvtable)
: ClassClosure(cvtable)
{
AvmAssert(traits()->sizeofInstance == sizeof(IDispatchConsumerClass));
AXTam* core = (AXTam*)this->core();
// should only be initialized once - but see above
if (!core->dispatchClass)
core->dispatchClass= this;
createVanillaPrototype();
}
IDispatchConsumerClass::~IDispatchConsumerClass()
{
}
IDispatchConsumer* IDispatchConsumerClass::create(IDispatch* p)
{
VTable* ivtable = this->ivtable();
IDispatchConsumer *o = new (core()->GetGC(), ivtable->getExtraSize()) IDispatchConsumer(ivtable, prototype, p);
return o;
}
void DISPPARAMS_helper::fill(AXTam *core, int argc, Atom* argv)
{
// must only be called once.
AvmAssert(params.cArgs==0 && params.cNamedArgs==0 && params.rgvarg==NULL && vars==NULL);
// XXX - Note: not using mmGC here - it dies at delete time
vars = new CComVariant[argc];
int i;
for (i=0;i<argc;i++) {
// args are in reversed order in DISPPARAMS, and we
// don't pass |this|
vars[argc-i-1] = core->atomToVARIANT(argv[i+1]);
}
params.rgvarg = vars;
params.cArgs = argc;
}
}