From 67d6455fa52921d631001e7938aa7b9fa40b45aa Mon Sep 17 00:00:00 2001
From: Hugo Parente Lima <hugo.pl@gmail.com>
Date: Wed, 26 Oct 2011 20:17:56 -0200
Subject: Unify the code used to do QObject meta calls.

---
 libpyside/pysidemetafunction.cpp | 106 +++++++++++++++++++++++----------------
 1 file changed, 64 insertions(+), 42 deletions(-)

(limited to 'libpyside/pysidemetafunction.cpp')

diff --git a/libpyside/pysidemetafunction.cpp b/libpyside/pysidemetafunction.cpp
index de4d3244a..cb6b8612e 100644
--- a/libpyside/pysidemetafunction.cpp
+++ b/libpyside/pysidemetafunction.cpp
@@ -21,6 +21,7 @@
  */
 #include <sbkpython.h>
 #include "pysidemetafunction.h"
+#include "pysidemetafunction_p.h"
 
 #include <shiboken.h>
 #include <QObject>
@@ -98,15 +99,55 @@ void functionFree(void *self)
 PyObject* functionCall(PyObject* self, PyObject* args, PyObject* kw)
 {
     PySideMetaFunction* function = reinterpret_cast<PySideMetaFunction*>(self);
-    QMetaMethod method = function->d->method;
+
+    PyObject* retVal;
+    if (!PySide::MetaFunction::call(function->d->qobject, function->d->method.methodIndex(), args, &retVal))
+        return 0;
+    return retVal;
+}
+
+} // extern "C"
+
+namespace PySide { namespace MetaFunction {
+
+void init(PyObject* module)
+{
+    if (PyType_Ready(&PySideMetaFunctionType) < 0)
+        return;
+
+    PyModule_AddObject(module, "MetaFunction", ((PyObject*)&PySideMetaFunctionType));
+}
+
+PySideMetaFunction* newObject(QObject* source, int methodIndex)
+{
+    if (methodIndex >= source->metaObject()->methodCount())
+        return 0;
+
+    QMetaMethod method = source->metaObject()->method(methodIndex);
+    if ((method.methodType() == QMetaMethod::Slot) ||
+        (method.methodType() == QMetaMethod::Method)) {
+        PySideMetaFunction* function = PyObject_New(PySideMetaFunction, &PySideMetaFunctionType);
+        function->d = new PySideMetaFunctionPrivate();
+        function->d->qobject = source;
+        function->d->method = method;
+        return function;
+    }
+    return 0;
+}
+
+bool call(QObject* self, int methodIndex, PyObject* args, PyObject** retVal)
+{
+
+    QMetaMethod method = self->metaObject()->method(methodIndex);
     QList<QByteArray> argTypes = method.parameterTypes();
 
     // args given plus return type
-    int numArgs = PyTuple_GET_SIZE(args) + 1;
+    Shiboken::AutoDecRef sequence(PySequence_Fast(args, 0));
+    int numArgs = PySequence_Fast_GET_SIZE(sequence.object()) + 1;
 
     if (numArgs - 1 != argTypes.count()) {
         PyErr_Format(PyExc_TypeError, "%s only accepts %d arguments, %d given!", method.signature(), argTypes.count(), numArgs);
-        return 0;
+        return false;
     }
 
     QVariant* methValues = new QVariant[numArgs];
@@ -133,63 +174,44 @@ PyObject* functionCall(PyObject* self, PyObject* args, PyObject* kw)
             if (Shiboken::TypeResolver::getType(typeName) == Shiboken::TypeResolver::ValueType) {
                 int typeId = QMetaType::type(typeName);
                 if (!typeId) {
-                    PyErr_Format(PyExc_TypeError, "Value type used on signal needs to be registered on meta type: %s", typeName.data());
+                    PyErr_Format(PyExc_TypeError, "Value types used on meta functions (including signals) need to be "
+                                                  "registered on meta type: %s", typeName.data());
                     break;
                 }
                 methValues[i] = QVariant(typeId, (void*) 0);
             }
             methArgs[i] = methValues[i].data();
             if (i != 0) // Don't do this for return type
-                typeResolver->toCpp(PyTuple_GET_ITEM(args, i - 1), &methArgs[i]);
+                typeResolver->toCpp(PySequence_Fast_GET_ITEM(sequence.object(), i - 1), &methArgs[i]);
         } else {
-            PyErr_Format(PyExc_TypeError, "Unknown type used to emit a signal: %s", argTypes[i].constData());
+            PyErr_Format(PyExc_TypeError, "Unknown type used to call meta function (that may be a signal): %s", argTypes[i].constData());
             break;
         }
     }
 
     bool ok = i == numArgs;
-    if (ok)
-        QMetaObject::metacall(function->d->qobject, QMetaObject::InvokeMetaMethod, method.methodIndex(), methArgs);
-
-    static Shiboken::TypeResolver* qVariantTypeResolver = Shiboken::TypeResolver::get("QVariant");
-    Q_ASSERT(qVariantTypeResolver);
-
-    PyObject* retVal = qVariantTypeResolver->toPython(&methValues[0]);
+    if (ok) {
+        QMetaObject::metacall(self, QMetaObject::InvokeMetaMethod, method.methodIndex(), methArgs);
+
+        if (retVal) {
+            if (methArgs[0]) {
+                static Shiboken::TypeResolver* qVariantTypeResolver = Shiboken::TypeResolver::get("QVariant");
+                Q_ASSERT(qVariantTypeResolver);
+
+                *retVal = qVariantTypeResolver->toPython(&methValues[0]);
+            } else {
+                *retVal = Py_None;
+                Py_INCREF(*retVal);
+            }
+        }
+    }
 
     delete[] methArgs;
     delete[] methValues;
 
-    return retVal;
+    return ok;
 }
 
-} // extern "C"
-
-namespace PySide { namespace MetaFunction {
-
-void init(PyObject* module)
-{
-    if (PyType_Ready(&PySideMetaFunctionType) < 0)
-        return;
-
-    PyModule_AddObject(module, "MetaFunction", ((PyObject*)&PySideMetaFunctionType));
-}
-
-PySideMetaFunction* newObject(QObject* source, int methodIndex)
-{
-    if (methodIndex >= source->metaObject()->methodCount())
-        return 0;
-
-    QMetaMethod method = source->metaObject()->method(methodIndex);
-    if ((method.methodType() == QMetaMethod::Slot) ||
-        (method.methodType() == QMetaMethod::Method)) {
-        PySideMetaFunction* function = PyObject_New(PySideMetaFunction, &PySideMetaFunctionType);
-        function->d = new PySideMetaFunctionPrivate();
-        function->d->qobject = source;
-        function->d->method = method;
-        return function;
-    }
-    return 0;
-}
 
 } //namespace MetaFunction
 } //namespace PySide
-- 
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