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/******************************************************************************
*
* MantaFlow fluid solver framework
* Copyright 2011 Tobias Pfaff, Nils Thuerey
*
* This program is free software, distributed under the terms of the
* Apache License, Version 2.0
* http://www.apache.org/licenses/LICENSE-2.0
*
* Python argument wrappers and conversion tools
*
******************************************************************************/
// -----------------------------------------------------------------
// NOTE:
// Do not include this file in user code, include "manta.h" instead
// -----------------------------------------------------------------
#ifdef _MANTA_H
# ifndef _PCONVERT_H
# define _PCONVERT_H
# include <string>
# include <map>
# include <vector>
namespace Manta {
template<class T> class Grid;
//! Locks the given PbClass Arguments until ArgLocker goes out of scope
struct ArgLocker {
void add(PbClass *p);
~ArgLocker();
std::vector<PbClass *> locks;
};
PyObject *getPyNone();
// for PbClass-derived classes
template<class T> T *fromPyPtr(PyObject *obj, std::vector<void *> *tmp)
{
if (PbClass::isNullRef(obj) || PbClass::isNoneRef(obj))
return 0;
PbClass *pbo = Pb::objFromPy(obj);
const std::string &type = Namify<T>::S;
if (!pbo || !(pbo->canConvertTo(type)))
throw Error("can't convert argument to " + type + "*");
return (T *)(pbo);
}
template<> float *fromPyPtr<float>(PyObject *obj, std::vector<void *> *tmp);
template<> double *fromPyPtr<double>(PyObject *obj, std::vector<void *> *tmp);
template<> int *fromPyPtr<int>(PyObject *obj, std::vector<void *> *tmp);
template<> std::string *fromPyPtr<std::string>(PyObject *obj, std::vector<void *> *tmp);
template<> bool *fromPyPtr<bool>(PyObject *obj, std::vector<void *> *tmp);
template<> Vec3 *fromPyPtr<Vec3>(PyObject *obj, std::vector<void *> *tmp);
template<> Vec3i *fromPyPtr<Vec3i>(PyObject *obj, std::vector<void *> *tmp);
template<> Vec4 *fromPyPtr<Vec4>(PyObject *obj, std::vector<void *> *tmp);
template<> Vec4i *fromPyPtr<Vec4i>(PyObject *obj, std::vector<void *> *tmp);
PyObject *incref(PyObject *obj);
template<class T> PyObject *toPy(const T &v)
{
PyObject *obj = v.getPyObject();
if (obj) {
return incref(obj);
}
T *co = new T(v);
const std::string &type = Namify<typename remove_pointers<T>::type>::S;
return Pb::copyObject(co, type);
}
template<class T> bool isPy(PyObject *obj)
{
if (PbClass::isNullRef(obj) || PbClass::isNoneRef(obj))
return false;
PbClass *pbo = Pb::objFromPy(obj);
const std::string &type = Namify<typename remove_pointers<T>::type>::S;
return pbo && pbo->canConvertTo(type);
}
template<class T> T fromPy(PyObject *obj)
{
throw Error(
"Unknown type conversion. Did you pass a PbClass by value? Instead always pass "
"grids/particlesystems/etc. by reference or using a pointer.");
}
// builtin types
template<> float fromPy<float>(PyObject *obj);
template<> double fromPy<double>(PyObject *obj);
template<> int fromPy<int>(PyObject *obj);
template<> PyObject *fromPy<PyObject *>(PyObject *obj);
template<> std::string fromPy<std::string>(PyObject *obj);
template<> const char *fromPy<const char *>(PyObject *obj);
template<> bool fromPy<bool>(PyObject *obj);
template<> Vec3 fromPy<Vec3>(PyObject *obj);
template<> Vec3i fromPy<Vec3i>(PyObject *obj);
template<> Vec4 fromPy<Vec4>(PyObject *obj);
template<> Vec4i fromPy<Vec4i>(PyObject *obj);
template<> PbType fromPy<PbType>(PyObject *obj);
template<> PbTypeVec fromPy<PbTypeVec>(PyObject *obj);
template<> PyObject *toPy<int>(const int &v);
template<> PyObject *toPy<std::string>(const std::string &val);
template<> PyObject *toPy<float>(const float &v);
template<> PyObject *toPy<double>(const double &v);
template<> PyObject *toPy<bool>(const bool &v);
template<> PyObject *toPy<Vec3i>(const Vec3i &v);
template<> PyObject *toPy<Vec3>(const Vec3 &v);
template<> PyObject *toPy<Vec4i>(const Vec4i &v);
template<> PyObject *toPy<Vec4>(const Vec4 &v);
typedef PbClass *PbClass_Ptr;
template<> PyObject *toPy<PbClass *>(const PbClass_Ptr &obj);
template<> bool isPy<float>(PyObject *obj);
template<> bool isPy<double>(PyObject *obj);
template<> bool isPy<int>(PyObject *obj);
template<> bool isPy<PyObject *>(PyObject *obj);
template<> bool isPy<std::string>(PyObject *obj);
template<> bool isPy<const char *>(PyObject *obj);
template<> bool isPy<bool>(PyObject *obj);
template<> bool isPy<Vec3>(PyObject *obj);
template<> bool isPy<Vec3i>(PyObject *obj);
template<> bool isPy<Vec4>(PyObject *obj);
template<> bool isPy<Vec4i>(PyObject *obj);
template<> bool isPy<PbType>(PyObject *obj);
//! Encapsulation of python arguments
class PbArgs {
public:
PbArgs(PyObject *linargs = NULL, PyObject *dict = NULL);
~PbArgs();
void setup(PyObject *linargs = NULL, PyObject *dict = NULL);
void check();
FluidSolver *obtainParent();
inline int numLinArgs()
{
return mLinData.size();
}
inline bool has(const std::string &key)
{
return getItem(key, false) != NULL;
}
inline void deleteItem(const std::string &key)
{
if (mData.find(key) != mData.end())
mData.erase(mData.find(key));
}
inline PyObject *linArgs()
{
return mLinArgs;
}
inline PyObject *kwds()
{
return mKwds;
}
void addLinArg(PyObject *obj);
template<class T> inline void add(const std::string &key, T arg)
{
DataElement el = {toPy(arg), false};
mData[key] = el;
}
template<class T> inline T get(const std::string &key, int number = -1, ArgLocker *lk = NULL)
{
visit(number, key);
PyObject *o = getItem(key, false, lk);
if (o)
return fromPy<T>(o);
o = getItem(number, false, lk);
if (o)
return fromPy<T>(o);
errMsg("Argument '" + key + "' is not defined.");
}
template<class T>
inline T getOpt(const std::string &key, int number, T defarg, ArgLocker *lk = NULL)
{
visit(number, key);
PyObject *o = getItem(key, false, lk);
if (o)
return fromPy<T>(o);
if (number >= 0)
o = getItem(number, false, lk);
return (o) ? fromPy<T>(o) : defarg;
}
template<class T>
inline T *getPtrOpt(const std::string &key, int number, T *defarg, ArgLocker *lk = NULL)
{
visit(number, key);
PyObject *o = getItem(key, false, lk);
if (o)
return fromPyPtr<T>(o, &mTmpStorage);
if (number >= 0)
o = getItem(number, false, lk);
return o ? fromPyPtr<T>(o, &mTmpStorage) : defarg;
}
template<class T> inline T *getPtr(const std::string &key, int number = -1, ArgLocker *lk = NULL)
{
visit(number, key);
PyObject *o = getItem(key, false, lk);
if (o)
return fromPyPtr<T>(o, &mTmpStorage);
o = getItem(number, false, lk);
if (o)
return fromPyPtr<T>(o, &mTmpStorage);
errMsg("Argument '" + key + "' is not defined.");
}
// automatic template type deduction
template<class T> bool typeCheck(int num, const std::string &name)
{
PyObject *o = getItem(name, false, 0);
if (!o)
o = getItem(num, false, 0);
return o ? isPy<typename remove_pointers<T>::type>(o) : false;
}
PbArgs &operator=(const PbArgs &a); // dummy
void copy(PbArgs &a);
void clear();
void visit(int num, const std::string &key);
static PbArgs EMPTY;
protected:
PyObject *getItem(const std::string &key, bool strict, ArgLocker *lk = NULL);
PyObject *getItem(size_t number, bool strict, ArgLocker *lk = NULL);
struct DataElement {
PyObject *obj;
bool visited;
};
std::map<std::string, DataElement> mData;
std::vector<DataElement> mLinData;
PyObject *mLinArgs, *mKwds;
std::vector<void *> mTmpStorage;
};
} // namespace Manta
# if NUMPY == 1
# include "numpyWrap.h"
# endif
# endif
#endif
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