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arrays: to_python now raise exception when array is empty

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- otherwise it was simply crashing .
- now raise a C++ exception
- adapted cython wrapper to catch it as a python exception
This commit is contained in:
Olivier Parcollet 2014-02-04 15:03:33 +01:00
parent 65ed3a8dc2
commit dd6b996e5d
2 changed files with 10 additions and 7 deletions
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12
pytriqs/pxd/arrays.pxd
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@ -8,7 +8,7 @@ cdef extern from "<triqs/python_tools/array_interface.hpp>" namespace "triqs::ar
array operator -( array_view &)
array operator *( array_view &)
array operator /( array_view &)
object to_python()
object to_python() except +
cdef cppclass array_view "triqs::arrays::array_c" [T,R] :
array_view()
@ -18,7 +18,7 @@ cdef extern from "<triqs/python_tools/array_interface.hpp>" namespace "triqs::ar
array_view operator *( array_view &)
array_view operator /( array_view &)
void operator << (array_view &)
object to_python()
object to_python() except +
int shape(int)
# bug in cython
#_lazy_expr operator()(_lazy_expr&)
@ -36,7 +36,7 @@ cdef extern from "<triqs/python_tools/array_interface.hpp>" namespace "triqs::ar
matrix_view(matrix)
matrix_view(object) except +
void operator << (matrix_view &)
object to_python()
object to_python() except +
cdef cppclass matrix "triqs::arrays::matrix" [T] :
matrix()
@ -44,7 +44,7 @@ cdef extern from "<triqs/python_tools/array_interface.hpp>" namespace "triqs::ar
matrix operator +( matrix_view &)
matrix operator -( matrix_view &)
matrix operator /( matrix_view &)
object to_python()
object to_python() except +
cdef matrix_view operator +( matrix_view & , matrix_view &)
cdef matrix_view operator -( matrix_view & , matrix_view &)
@ -58,7 +58,7 @@ cdef extern from "<triqs/python_tools/array_interface.hpp>" namespace "triqs::ar
tqa_vector operator -( tqa_vector_view &)
tqa_vector operator *( tqa_vector_view &)
tqa_vector operator /( tqa_vector_view &)
object to_python()
object to_python() except +
cdef cppclass tqa_vector_view "triqs::arrays::vector_c" [T] :
tqa_vector_view()
@ -68,5 +68,5 @@ cdef extern from "<triqs/python_tools/array_interface.hpp>" namespace "triqs::ar
tqa_vector_view operator *(tqa_vector_view &)
tqa_vector_view operator /(tqa_vector_view &)
void operator << (tqa_vector_view &)
object to_python()
object to_python() except +

5
triqs/arrays/impl/indexmap_storage_pair.hpp
View File

@ -147,7 +147,10 @@ namespace triqs { namespace arrays {
storage_type & storage() {return storage_;}
#ifdef TRIQS_WITH_PYTHON_SUPPORT
PyObject * to_python() const { return numpy_interface::array_view_to_python(*this);}
PyObject *to_python() const {
if (is_empty()) TRIQS_RUNTIME_ERROR << "Error : trying to return an empty array/matrix/vector to python";
return numpy_interface::array_view_to_python(*this);
}
#endif
/// data_start is the starting point of the data of the object