Files
llvm/lldb/source/Interpreter/PythonDataObjects.cpp
Zachary Turner 0641ca1a2d Remove ScriptInterpreterObject.
This removes ScriptInterpreterObject from the codebase completely.
Places that used to rely on ScriptInterpreterObject now use
StructuredData::Object and its derived classes.  To support this,
a new type of StructuredData object is introduced, called
StructuredData::Generic, which stores a void*.  Internally within
the python library, StructuredPythonObject subclasses this
StructuredData::Generic class so that it can addref and decref
the python object on construction and destruction.

Additionally, all of the classes in PythonDataObjects.h such
as PythonList, PythonDictionary, etc now provide a method to
create an instance of the corresponding StructuredData type.  For
example, there is PythonDictionary::CreateStructuredDictionary.
To eliminate dependencies on PythonDataObjects for external
callers, all ScriptInterpreter methods now return only
StructuredData classes

The rest of the changes in this CL are focused on fixing up
users of PythonDataObjects classes to use the new StructuredData
classes.

llvm-svn: 232534
2015-03-17 20:04:04 +00:00

525 lines
12 KiB
C++

//===-- PythonDataObjects.cpp ------------------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// In order to guarantee correct working with Python, Python.h *MUST* be
// the *FIRST* header file included here.
#ifdef LLDB_DISABLE_PYTHON
// Python is disabled in this build
#else
#include "lldb/lldb-python.h"
#include <stdio.h>
#include "lldb/Core/Stream.h"
#include "lldb/Host/File.h"
#include "lldb/Interpreter/PythonDataObjects.h"
#include "lldb/Interpreter/ScriptInterpreter.h"
#include "lldb/Interpreter/ScriptInterpreterPython.h"
using namespace lldb_private;
using namespace lldb;
void
StructuredPythonObject::Dump(Stream &s) const
{
s << "Python Obj: 0x" << GetValue();
}
//----------------------------------------------------------------------
// PythonObject
//----------------------------------------------------------------------
void
PythonObject::Dump (Stream &strm) const
{
if (m_py_obj)
{
FILE *file = ::tmpfile();
if (file)
{
::PyObject_Print (m_py_obj, file, 0);
const long length = ftell (file);
if (length)
{
::rewind(file);
std::vector<char> file_contents (length,'\0');
const size_t length_read = ::fread (file_contents.data(), 1, file_contents.size(), file);
if (length_read > 0)
strm.Write (file_contents.data(), length_read);
}
::fclose (file);
}
}
else
strm.PutCString ("NULL");
}
PyObjectType
PythonObject::GetObjectType() const
{
if (IsNULLOrNone())
return PyObjectType::None;
if (PyList_Check(m_py_obj))
return PyObjectType::List;
if (PyDict_Check(m_py_obj))
return PyObjectType::Dictionary;
if (PyString_Check(m_py_obj))
return PyObjectType::String;
if (PyInt_Check(m_py_obj) || PyLong_Check(m_py_obj))
return PyObjectType::Integer;
return PyObjectType::Unknown;
}
PythonString
PythonObject::Repr ()
{
if (!m_py_obj)
return PythonString ();
PyObject *repr = PyObject_Repr(m_py_obj);
if (!repr)
return PythonString ();
return PythonString(repr);
}
PythonString
PythonObject::Str ()
{
if (!m_py_obj)
return PythonString ();
PyObject *str = PyObject_Str(m_py_obj);
if (!str)
return PythonString ();
return PythonString(str);
}
bool
PythonObject::IsNULLOrNone () const
{
return ((m_py_obj == nullptr) || (m_py_obj == Py_None));
}
StructuredData::ObjectSP
PythonObject::CreateStructuredObject() const
{
switch (GetObjectType())
{
case PyObjectType::Dictionary:
return PythonDictionary(m_py_obj).CreateStructuredDictionary();
case PyObjectType::Integer:
return PythonInteger(m_py_obj).CreateStructuredInteger();
case PyObjectType::List:
return PythonList(m_py_obj).CreateStructuredArray();
case PyObjectType::String:
return PythonString(m_py_obj).CreateStructuredString();
case PyObjectType::None:
return StructuredData::ObjectSP();
default:
return StructuredData::ObjectSP(new StructuredPythonObject(m_py_obj));
}
}
//----------------------------------------------------------------------
// PythonString
//----------------------------------------------------------------------
PythonString::PythonString (PyObject *py_obj) :
PythonObject()
{
Reset(py_obj); // Use "Reset()" to ensure that py_obj is a string
}
PythonString::PythonString (const PythonObject &object) :
PythonObject()
{
Reset(object.get()); // Use "Reset()" to ensure that py_obj is a string
}
PythonString::PythonString (llvm::StringRef string) :
PythonObject(PyString_FromStringAndSize(string.data(), string.size()))
{
}
PythonString::PythonString(const char *string) :
PythonObject(PyString_FromString(string))
{
}
PythonString::PythonString () :
PythonObject()
{
}
PythonString::~PythonString ()
{
}
bool
PythonString::Reset (PyObject *py_obj)
{
if (py_obj && PyString_Check(py_obj))
return PythonObject::Reset(py_obj);
PythonObject::Reset(nullptr);
return py_obj == nullptr;
}
llvm::StringRef
PythonString::GetString() const
{
if (m_py_obj)
return llvm::StringRef(PyString_AsString(m_py_obj), GetSize());
return nullptr;
}
size_t
PythonString::GetSize() const
{
if (m_py_obj)
return PyString_Size(m_py_obj);
return 0;
}
void
PythonString::SetString (llvm::StringRef string)
{
PythonObject::Reset(PyString_FromStringAndSize(string.data(), string.size()));
}
StructuredData::StringSP
PythonString::CreateStructuredString() const
{
StructuredData::StringSP result(new StructuredData::String);
result->SetValue(GetString());
return result;
}
//----------------------------------------------------------------------
// PythonInteger
//----------------------------------------------------------------------
PythonInteger::PythonInteger (PyObject *py_obj) :
PythonObject()
{
Reset(py_obj); // Use "Reset()" to ensure that py_obj is a integer type
}
PythonInteger::PythonInteger (const PythonObject &object) :
PythonObject()
{
Reset(object.get()); // Use "Reset()" to ensure that py_obj is a integer type
}
PythonInteger::PythonInteger (int64_t value) :
PythonObject()
{
SetInteger (value);
}
PythonInteger::~PythonInteger ()
{
}
bool
PythonInteger::Reset (PyObject *py_obj)
{
if (py_obj)
{
if (PyInt_Check (py_obj) || PyLong_Check(py_obj))
return PythonObject::Reset(py_obj);
}
PythonObject::Reset(nullptr);
return py_obj == nullptr;
}
int64_t
PythonInteger::GetInteger() const
{
if (m_py_obj)
{
if (PyInt_Check(m_py_obj))
return PyInt_AsLong(m_py_obj);
else if (PyLong_Check(m_py_obj))
return PyLong_AsLongLong(m_py_obj);
}
return UINT64_MAX;
}
void
PythonInteger::SetInteger (int64_t value)
{
PythonObject::Reset(PyLong_FromLongLong(value));
}
StructuredData::IntegerSP
PythonInteger::CreateStructuredInteger() const
{
StructuredData::IntegerSP result(new StructuredData::Integer);
result->SetValue(GetInteger());
return result;
}
//----------------------------------------------------------------------
// PythonList
//----------------------------------------------------------------------
PythonList::PythonList (bool create_empty) :
PythonObject(create_empty ? PyList_New(0) : nullptr)
{
}
PythonList::PythonList (uint32_t count) :
PythonObject(PyList_New(count))
{
}
PythonList::PythonList (PyObject *py_obj) :
PythonObject()
{
Reset(py_obj); // Use "Reset()" to ensure that py_obj is a list
}
PythonList::PythonList (const PythonObject &object) :
PythonObject()
{
Reset(object.get()); // Use "Reset()" to ensure that py_obj is a list
}
PythonList::~PythonList ()
{
}
bool
PythonList::Reset (PyObject *py_obj)
{
if (py_obj && PyList_Check(py_obj))
return PythonObject::Reset(py_obj);
PythonObject::Reset(nullptr);
return py_obj == nullptr;
}
uint32_t
PythonList::GetSize() const
{
if (m_py_obj)
return PyList_GET_SIZE(m_py_obj);
return 0;
}
PythonObject
PythonList::GetItemAtIndex(uint32_t index) const
{
if (m_py_obj)
return PythonObject(PyList_GetItem(m_py_obj, index));
return PythonObject();
}
void
PythonList::SetItemAtIndex (uint32_t index, const PythonObject & object)
{
if (m_py_obj && object)
PyList_SetItem(m_py_obj, index, object.get());
}
void
PythonList::AppendItem (const PythonObject &object)
{
if (m_py_obj && object)
PyList_Append(m_py_obj, object.get());
}
StructuredData::ArraySP
PythonList::CreateStructuredArray() const
{
StructuredData::ArraySP result(new StructuredData::Array);
uint32_t count = GetSize();
for (uint32_t i = 0; i < count; ++i)
{
PythonObject obj = GetItemAtIndex(i);
result->AddItem(obj.CreateStructuredObject());
}
return result;
}
//----------------------------------------------------------------------
// PythonDictionary
//----------------------------------------------------------------------
PythonDictionary::PythonDictionary (bool create_empty) :
PythonObject(create_empty ? PyDict_New() : nullptr)
{
}
PythonDictionary::PythonDictionary (PyObject *py_obj) :
PythonObject(py_obj)
{
Reset(py_obj); // Use "Reset()" to ensure that py_obj is a dictionary
}
PythonDictionary::PythonDictionary (const PythonObject &object) :
PythonObject()
{
Reset(object.get()); // Use "Reset()" to ensure that py_obj is a dictionary
}
PythonDictionary::~PythonDictionary ()
{
}
bool
PythonDictionary::Reset (PyObject *py_obj)
{
if (py_obj && PyDict_Check(py_obj))
return PythonObject::Reset(py_obj);
PythonObject::Reset(nullptr);
return py_obj == nullptr;
}
uint32_t
PythonDictionary::GetSize() const
{
if (m_py_obj)
return PyDict_Size(m_py_obj);
return 0;
}
PythonObject
PythonDictionary::GetItemForKey (const char *key) const
{
if (key && key[0])
{
PythonString python_key(key);
return GetItemForKey(python_key);
}
return PythonObject();
}
PythonObject
PythonDictionary::GetItemForKey (const PythonString &key) const
{
if (m_py_obj && key)
return PythonObject(PyDict_GetItem(m_py_obj, key.get()));
return PythonObject();
}
const char *
PythonDictionary::GetItemForKeyAsString (const PythonString &key, const char *fail_value) const
{
if (m_py_obj && key)
{
PyObject *py_obj = PyDict_GetItem(m_py_obj, key.get());
if (py_obj && PyString_Check(py_obj))
return PyString_AsString(py_obj);
}
return fail_value;
}
int64_t
PythonDictionary::GetItemForKeyAsInteger (const PythonString &key, int64_t fail_value) const
{
if (m_py_obj && key)
{
PyObject *py_obj = PyDict_GetItem(m_py_obj, key.get());
if (py_obj)
{
if (PyInt_Check(py_obj))
return PyInt_AsLong(py_obj);
if (PyLong_Check(py_obj))
return PyLong_AsLong(py_obj);
}
}
return fail_value;
}
PythonList
PythonDictionary::GetKeys () const
{
if (m_py_obj)
return PythonList(PyDict_Keys(m_py_obj));
return PythonList(true);
}
PythonString
PythonDictionary::GetKeyAtPosition (uint32_t pos) const
{
PyObject *key, *value;
Py_ssize_t pos_iter = 0;
if (m_py_obj)
{
while (PyDict_Next(m_py_obj, &pos_iter, &key, &value))
{
if (pos-- == 0)
return PythonString(key);
}
}
return PythonString();
}
PythonObject
PythonDictionary::GetValueAtPosition (uint32_t pos) const
{
PyObject *key, *value;
Py_ssize_t pos_iter = 0;
if (!m_py_obj)
return PythonObject();
while (PyDict_Next(m_py_obj, &pos_iter, &key, &value)) {
if (pos-- == 0)
return PythonObject(value);
}
return PythonObject();
}
void
PythonDictionary::SetItemForKey (const PythonString &key, PyObject *value)
{
if (m_py_obj && key && value)
PyDict_SetItem(m_py_obj, key.get(), value);
}
void
PythonDictionary::SetItemForKey (const PythonString &key, const PythonObject &value)
{
if (m_py_obj && key && value)
PyDict_SetItem(m_py_obj, key.get(), value.get());
}
StructuredData::DictionarySP
PythonDictionary::CreateStructuredDictionary() const
{
StructuredData::DictionarySP result(new StructuredData::Dictionary);
PythonList keys(GetKeys());
uint32_t num_keys = keys.GetSize();
for (uint32_t i = 0; i < num_keys; ++i)
{
PythonObject key = keys.GetItemAtIndex(i);
PythonString key_str = key.Str();
PythonObject value = GetItemForKey(key);
StructuredData::ObjectSP structured_value = value.CreateStructuredObject();
result->AddItem(key_str.GetString(), structured_value);
}
return result;
}
#endif