151 lines
4.9 KiB
C++
151 lines
4.9 KiB
C++
/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is mozilla.org.
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* Portions created by the Initial Developer are Copyright (C) 2005
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Mark Hammond (original author)
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "nsPyDOM.h"
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#include "nsIProgrammingLanguage.h"
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#include "nsIScriptTimeoutHandler.h"
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#include "nsIArray.h"
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class nsPyTimeoutHandler: public nsIScriptTimeoutHandler
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{
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public:
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// nsISupports
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NS_DECL_ISUPPORTS
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nsPyTimeoutHandler(const nsAString &aExpr, PyObject *aFunObj,
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PyObject *obArgv) {
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mFunObj = aFunObj;
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Py_XINCREF(mFunObj);
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mExpr = aExpr;
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NS_ASSERTION(PyTuple_Check(obArgv), "Should be a tuple!");
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// We don't build the argv yet, as we want that to wrap a tuple with
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// the 'lateness' arg added, and tuples are immutable, so we can't change
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// it when we get called multiple times and need to change that last arg.
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mObArgv = obArgv;
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Py_INCREF(mObArgv);
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// mArrayArgv remains empty
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mLateness = 0;
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}
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~nsPyTimeoutHandler() {
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Py_XDECREF(mFunObj);
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Py_XDECREF(mObArgv);
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}
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virtual const PRUnichar *GetHandlerText() {
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return mExpr.get();
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}
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virtual void *GetScriptObject() {
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return mFunObj;
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}
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virtual void GetLocation(const char **aFileName, PRUint32 *aLineNo) {
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*aFileName = mFileName.get();
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*aLineNo = mLineNo;
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}
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virtual nsIArray *GetArgv();
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virtual PRUint32 GetScriptTypeID() {
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return nsIProgrammingLanguage::PYTHON;
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}
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virtual PRUint32 GetScriptVersion() {
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return 0;
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}
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// Called by the timeout mechanism so the secret 'lateness' arg can be
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// added.
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virtual void SetLateness(PRIntervalTime aHowLate) {
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mLateness = aHowLate;
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}
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private:
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// filename, line number of the script
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nsCAutoString mFileName;
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PRUint32 mLineNo;
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PRIntervalTime mLateness;
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nsCOMPtr<nsIArray> mArrayArgv;
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PyObject *mObArgv;
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// The Python expression or script object
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nsAutoString mExpr;
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PyObject *mFunObj;
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};
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// QueryInterface implementation for nsPyTimeoutHandler
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NS_INTERFACE_MAP_BEGIN(nsPyTimeoutHandler)
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NS_INTERFACE_MAP_ENTRY(nsIScriptTimeoutHandler)
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NS_INTERFACE_MAP_ENTRY(nsISupports)
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NS_INTERFACE_MAP_END
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NS_IMPL_ADDREF(nsPyTimeoutHandler)
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NS_IMPL_RELEASE(nsPyTimeoutHandler)
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nsIArray *nsPyTimeoutHandler::GetArgv() {
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// Create a new tuple object with our original args, plus one for
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// lateness.
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// Using tuples means we can skip alot of error checking.
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CEnterLeavePython _celp;
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if (!PyTuple_Check(mObArgv)) {
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NS_ERROR("Must be a tuple");
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return nsnull;
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}
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int argc_orig = PyTuple_Size(mObArgv);
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PyObject *obNew = PyTuple_New(argc_orig+1);
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for (int i=0;i<argc_orig;i++) {
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PyTuple_SET_ITEM(obNew, i, PyTuple_GET_ITEM(mObArgv, i));
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Py_INCREF(PyTuple_GET_ITEM(obNew, i));
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}
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PyTuple_SET_ITEM(obNew, argc_orig, PyInt_FromLong(mLateness));
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nsresult nr = NS_CreatePyArgv(obNew, getter_AddRefs(mArrayArgv));
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NS_ASSERTION(NS_SUCCEEDED(nr), "Failed to create argv!?");
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Py_DECREF(obNew); // reference held by mArrayArgv
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return mArrayArgv;
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}
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// And our factory.
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nsresult CreatePyTimeoutHandler(const nsAString &aExpr,
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PyObject *aFunObj, PyObject *obArgs,
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nsIScriptTimeoutHandler **aRet) {
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*aRet = new nsPyTimeoutHandler(aExpr, aFunObj, obArgs);
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if (!aRet)
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return NS_ERROR_OUT_OF_MEMORY;
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return (*aRet)->QueryInterface(NS_GET_IID(nsIScriptTimeoutHandler),
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reinterpret_cast<void **>(aRet));
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}
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