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// SPDX-FileCopyrightText: Copyright (c) Kitware Inc.
// SPDX-License-Identifier: BSD-3-Clause
#include "pqPythonCompleter.h"
QString pqPythonCompleter::getVariableToComplete(const QString& prompt)
{
// Search backward through the string for usable characters
QString textToComplete{};
for (int i = prompt.length() - 1; i >= 0; --i)
{
QChar c = prompt.at(i);
if (c.isLetterOrNumber() || c == '.' || c == '_' || c == '[' || c == ']')
{
textToComplete.prepend(c);
}
else
{
break;
}
}
return textToComplete;
}
//-----------------------------------------------------------------------------
QStringList pqPythonCompleter::getCompletions(const QString& prompt)
{
QString textToComplete = this->getVariableToComplete(prompt);
// Variable to lookup is the name before the last dot if there is one.
QString lookup{};
int dot = textToComplete.lastIndexOf('.');
if (dot != -1)
{
lookup = textToComplete.mid(0, dot);
}
// Lookup python names
if (this->getCompleteEmptyPrompts() || !lookup.isEmpty() ||
!this->getCompletionPrefix(prompt).isEmpty())
{
return this->getPythonCompletions(lookup);
}
return QStringList{};
};
//-----------------------------------------------------------------------------
QString pqPythonCompleter::getCompletionPrefix(const QString& prompt)
{
// Search backward through the string for usable characters
QString compareText = this->getVariableToComplete(prompt);
int dot = compareText.lastIndexOf('.');
if (dot != -1)
{
compareText = compareText.mid(dot + 1);
}
return compareText;
};
//-----------------------------------------------------------------------------
void pqPythonCompleter::appendPyObjectAttributes(PyObject* object, QStringList& results)
{
if (!object)
{
return;
}
PyObject* keys = nullptr;
bool is_dict = PyDict_Check(object);
if (is_dict)
{
keys = PyDict_Keys(object); // returns *new* reference.
}
else
{
keys = PyObject_Dir(object); // returns *new* reference.
}
if (keys)
{
PyObject* key;
PyObject* value;
QString keystr;
int nKeys = PyList_Size(keys);
for (int i = 0; i < nKeys; ++i)
{
key = PyList_GetItem(keys, i);
if (is_dict)
{
value = PyDict_GetItem(object, key); // Return value: Borrowed reference.
Py_XINCREF(value); // so we can use Py_DECREF later.
}
else
{
value = PyObject_GetAttr(object, key); // Return value: New reference.
}
if (!value)
{
continue;
}
results << PyUnicode_AsUTF8(key);
Py_DECREF(value);
// Clear out any errors that may have occurred.
PyErr_Clear();
}
Py_DECREF(keys);
}
Py_DECREF(object);
}
//-----------------------------------------------------------------------------
PyObject* pqPythonCompleter::derivePyObject(const QString& pythonObjectName, PyObject* locals)
{
PyObject* derivedObject = locals;
QStringList tmpNames = pythonObjectName.split('.');
for (int i = 0; i < tmpNames.size() && derivedObject; ++i)
{
QByteArray tmpName = tmpNames.at(i).toUtf8();
PyObject* prevObj = derivedObject;
if (PyDict_Check(derivedObject))
{
derivedObject = PyDict_GetItemString(derivedObject, tmpName.data());
Py_XINCREF(derivedObject);
}
else
{
derivedObject = PyObject_GetAttrString(derivedObject, tmpName.data());
}
Py_DECREF(prevObj);
}
PyErr_Clear();
return derivedObject;
}
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