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Diffstat (limited to 'src/libs/xpcom18a4/python/src/PyISimpleEnumerator.cpp')
| -rw-r--r-- | src/libs/xpcom18a4/python/src/PyISimpleEnumerator.cpp | 202 |
1 files changed, 202 insertions, 0 deletions
diff --git a/src/libs/xpcom18a4/python/src/PyISimpleEnumerator.cpp b/src/libs/xpcom18a4/python/src/PyISimpleEnumerator.cpp new file mode 100644 index 00000000..b94d8eb2 --- /dev/null +++ b/src/libs/xpcom18a4/python/src/PyISimpleEnumerator.cpp @@ -0,0 +1,202 @@ +/* ***** 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 the Python XPCOM language bindings. + * + * The Initial Developer of the Original Code is + * ActiveState Tool Corp. + * Portions created by the Initial Developer are Copyright (C) 2000 + * the Initial Developer. All Rights Reserved. + * + * Contributor(s): + * Mark Hammond <MarkH@ActiveState.com> (original author) + * + * 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 ***** */ + +// +// This code is part of the XPCOM extensions for Python. +// +// Written May 2000 by Mark Hammond. +// +// Based heavily on the Python COM support, which is +// (c) Mark Hammond and Greg Stein. +// +// (c) 2000, ActiveState corp. + +#include "PyXPCOM_std.h" +#include <nsISimpleEnumerator.h> + +static nsISimpleEnumerator *GetI(PyObject *self) { + nsIID iid = NS_GET_IID(nsISimpleEnumerator); + + if (!Py_nsISupports::Check(self, iid)) { + PyErr_SetString(PyExc_TypeError, "This object is not the correct interface"); + return NULL; + } + return (nsISimpleEnumerator *)Py_nsISupports::GetI(self); +} + + +static PyObject *PyHasMoreElements(PyObject *self, PyObject *args) +{ + if (!PyArg_ParseTuple(args, ":HasMoreElements")) + return NULL; + + nsISimpleEnumerator *pI = GetI(self); + if (pI==NULL) + return NULL; + + nsresult r; + PRBool more; + Py_BEGIN_ALLOW_THREADS; + r = pI->HasMoreElements(&more); + Py_END_ALLOW_THREADS; + if ( NS_FAILED(r) ) + return PyXPCOM_BuildPyException(r); + return PyInt_FromLong(more); +} + +static PyObject *PyGetNext(PyObject *self, PyObject *args) +{ + PyObject *obIID = NULL; + if (!PyArg_ParseTuple(args, "|O:GetNext", &obIID)) + return NULL; + + nsIID iid(NS_GET_IID(nsISupports)); + if (obIID != NULL && !Py_nsIID::IIDFromPyObject(obIID, &iid)) + return NULL; + nsISimpleEnumerator *pI = GetI(self); + if (pI==NULL) + return NULL; + + nsISupports *pRet = nsnull; + nsresult r; + Py_BEGIN_ALLOW_THREADS; + r = pI->GetNext(&pRet); + Py_END_ALLOW_THREADS; + if ( NS_FAILED(r) ) + return PyXPCOM_BuildPyException(r); + if (obIID) { + nsISupports *temp; + Py_BEGIN_ALLOW_THREADS; + r = pRet->QueryInterface(iid, (void **)&temp); + pRet->Release(); + Py_END_ALLOW_THREADS; + if ( NS_FAILED(r) ) { + return PyXPCOM_BuildPyException(r); + } + pRet = temp; + } + PyObject *ret = Py_nsISupports::PyObjectFromInterface(pRet, iid); + NS_IF_RELEASE(pRet); + return ret; +} + +// A method added for Python performance if you really need +// it. Allows you to fetch a block of objects in one +// hit, allowing the loop to remain implemented in C. +static PyObject *PyFetchBlock(PyObject *self, PyObject *args) +{ + PyObject *obIID = NULL; + int n_wanted; + int n_fetched = 0; + if (!PyArg_ParseTuple(args, "i|O:FetchBlock", &n_wanted, &obIID)) + return NULL; + + nsIID iid(NS_GET_IID(nsISupports)); + if (obIID != NULL && !Py_nsIID::IIDFromPyObject(obIID, &iid)) + return NULL; + nsISimpleEnumerator *pI = GetI(self); + if (pI==NULL) + return NULL; + + // We want to fetch with the thread-lock released, + // but this means we can not append to the PyList + nsISupports **fetched = new nsISupports*[n_wanted]; + if (fetched==nsnull) { + PyErr_NoMemory(); + return NULL; + } + memset(fetched, 0, sizeof(nsISupports *) * n_wanted); + nsresult r = NS_OK; + PRBool more; + Py_BEGIN_ALLOW_THREADS; + for (;n_fetched<n_wanted;) { + r = pI->HasMoreElements(&more); + if (NS_FAILED(r)) + break; // this _is_ an error! + if (!more) + break; // Normal enum end. + nsISupports *pNew; + r = pI->GetNext(&pNew); + if (NS_FAILED(r)) // IS an error + break; + if (obIID) { + nsISupports *temp; + r = pNew->QueryInterface(iid, (void **)&temp); + pNew->Release(); + if ( NS_FAILED(r) ) { + break; + } + pNew = temp; + } + fetched[n_fetched] = pNew; + n_fetched++; + } + Py_END_ALLOW_THREADS; + PyObject *ret; + if (NS_SUCCEEDED(r)) { + ret = PyList_New(n_fetched); + if (ret) + for (int i=0;i<n_fetched;i++) { + PyObject *new_ob = Py_nsISupports::PyObjectFromInterface(fetched[i], iid); + NS_IF_RELEASE(fetched[i]); + PyList_SET_ITEM(ret, i, new_ob); + } + } else + ret = PyXPCOM_BuildPyException(r); + + if ( ret == NULL ) { + // Free the objects we consumed. + for (int i=0;i<n_fetched;i++) + fetched[i]->Release(); + + } + delete [] fetched; + return ret; +} + + +struct PyMethodDef +PyMethods_ISimpleEnumerator[] = +{ + { "HasMoreElements", PyHasMoreElements, 1}, + { "hasMoreElements", PyHasMoreElements, 1}, + { "GetNext", PyGetNext, 1}, + { "getNext", PyGetNext, 1}, + { "FetchBlock", PyFetchBlock, 1}, + { "fetchBlock", PyFetchBlock, 1}, + {NULL} +}; |