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Boxiang Sun
cython
Commits
d82d4fc3
Commit
d82d4fc3
authored
Feb 24, 2012
by
Mark Florisson
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Plain Diff
Move cython.array to cython.view.array to avoid conflicts with pure-mode cython.array
parent
cc419833
Changes
10
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Showing
10 changed files
with
35 additions
and
53 deletions
+35
-53
Cython/Compiler/CythonScope.py
Cython/Compiler/CythonScope.py
+1
-1
Cython/Compiler/ExprNodes.py
Cython/Compiler/ExprNodes.py
+1
-1
docs/src/userguide/memoryviews.rst
docs/src/userguide/memoryviews.rst
+10
-10
tests/run/cymemoryview.pyx
tests/run/cymemoryview.pyx
+0
-20
tests/run/cythonarray.pyx
tests/run/cythonarray.pyx
+11
-10
tests/run/cythonarrayutil.pxi
tests/run/cythonarrayutil.pxi
+3
-2
tests/run/memoryview.pyx
tests/run/memoryview.pyx
+3
-4
tests/run/memoryviewattrs.pyx
tests/run/memoryviewattrs.pyx
+1
-1
tests/run/memslice.pyx
tests/run/memslice.pyx
+4
-3
tests/run/numpy_memoryview.pyx
tests/run/numpy_memoryview.pyx
+1
-1
No files found.
Cython/Compiler/CythonScope.py
View file @
d82d4fc3
...
...
@@ -118,7 +118,7 @@ class CythonScope(ModuleScope):
self
.
viewscope
,
cython_scope
=
self
,
whitelist
=
MemoryView
.
view_utility_whitelist
)
self
.
entries
[
"array"
]
=
view_utility_scope
.
entries
.
pop
(
"array"
)
#
self.entries["array"] = view_utility_scope.entries.pop("array")
def
create_cython_scope
(
context
):
...
...
Cython/Compiler/ExprNodes.py
View file @
d82d4fc3
...
...
@@ -7189,7 +7189,7 @@ class CythonArrayNode(ExprNode):
return
self
.
get_cython_array_type
(
env
)
def
get_cython_array_type
(
self
,
env
):
return
env
.
global_scope
().
context
.
cython_scope
.
lookup
(
"array"
).
type
return
env
.
global_scope
().
context
.
cython_scope
.
viewscope
.
lookup
(
"array"
).
type
def
generate_result_code
(
self
,
code
):
import
Buffer
...
...
docs/src/userguide/memoryviews.rst
View file @
d82d4fc3
...
...
@@ -140,9 +140,9 @@ does not "follow" the last one anymore (meaning, it was strided already, but it
contiguous any longer), since it was sliced.
Memoryview
objects and cython.array
===================================
These typed slices can be converted to Python objects (`cython.memoryview`), and are indexable,
Memoryview
Objects and Cython Arrays
===================================
=
These typed slices can be converted to Python objects (`cython.
view.
memoryview`), and are indexable,
slicable and transposable in the same way that the slices are. They can also be converted back to typed
slices at any time.
...
...
@@ -176,18 +176,18 @@ the view was resliced in the meantime.
Cython Array
============
Whenever a slice is copied (using any of the `copy` or `copy_fortran` methods), you get a new
memoryview slice of a newly created cython.array object. This array can also be used manually,
memoryview slice of a newly created cython.
view.
array object. This array can also be used manually,
and will automatically allocate a block of data. It can later be assigned to a C or Fortran
contiguous slice (or a strided slice). It can be used like::
import cython
import cython
.view
my_array = cython.array(shape=(10, 2), itemsize=sizeof(int), format="i")
my_array = cython.
view.
array(shape=(10, 2), itemsize=sizeof(int), format="i")
cdef int[:, :] my_slice = my_array
It also takes an optional argument `mode` ('c' or 'fortran') and a boolean `allocate_buffer`, that indicates whether a buffer should be allocated and freed when it goes out of scope::
cdef cython.
array my_array = cython
.array(..., mode="fortran", allocate_buffer=False)
cdef cython.
view.array my_array = cython.view
.array(..., mode="fortran", allocate_buffer=False)
my_array.data = <char *> my_data_pointer
# define a function that can deallocate the data (if needed)
...
...
@@ -195,10 +195,10 @@ It also takes an optional argument `mode` ('c' or 'fortran') and a boolean `allo
You can also cast pointers to array, or C arrays to arrays::
cdef cython.array my_array = <int[:10, :2]> my_data_pointer
cdef cython.array my_array = <int[:, :]> my_c_array
cdef cython.
view.
array my_array = <int[:10, :2]> my_data_pointer
cdef cython.
view.
array my_array = <int[:, :]> my_c_array
Of course, you can also immediately assign a cython.array to a typed memoryview slice. A C array
Of course, you can also immediately assign a cython.
view.
array to a typed memoryview slice. A C array
may be assigned directly to a memoryview slice::
cdef int[:, ::1] myslice = my_2d_c_array
...
...
tests/run/cymemoryview.pyx
deleted
100644 → 0
View file @
cc419833
# mode: run
u'''
>>> f()
>>> g()
'''
# from cython.view cimport memoryview
from
cython
cimport
array
cdef
extern
from
"Python.h"
:
cdef
int
PyBUF_C_CONTIGUOUS
def
f
():
pass
# cdef array arr = array(shape=(10,10), itemsize=sizeof(int), format='i')
# cdef memoryview mv = memoryview(arr, PyBUF_C_CONTIGUOUS)
def
g
():
# cdef int[::1] mview = array((10,), itemsize=sizeof(int), format='i')
cdef
int
[::
1
]
mview
=
array
((
10
,),
itemsize
=
sizeof
(
int
),
format
=
'i'
)
tests/run/cythonarray.pyx
View file @
d82d4fc3
...
...
@@ -2,7 +2,8 @@
from
__future__
import
unicode_literals
from
cython
cimport
array
from
cython.view
cimport
array
from
cython
cimport
view
as
v
cimport
cython
as
cy
include
"cythonarrayutil.pxi"
...
...
@@ -19,7 +20,7 @@ def contiguity():
2 3
2
'''
cdef
cy
.
array
cvarray
=
cy
.
array
(
shape
=
(
2
,
3
),
itemsize
=
sizeof
(
int
),
format
=
"i"
,
mode
=
'c'
)
cdef
v
.
array
cvarray
=
v
.
array
(
shape
=
(
2
,
3
),
itemsize
=
sizeof
(
int
),
format
=
"i"
,
mode
=
'c'
)
assert
cvarray
.
len
==
2
*
3
*
sizeof
(
int
),
(
cvarray
.
len
,
2
*
3
*
sizeof
(
int
))
assert
cvarray
.
itemsize
==
sizeof
(
int
)
print
cvarray
.
strides
[
0
],
cvarray
.
strides
[
1
]
...
...
@@ -28,7 +29,7 @@ def contiguity():
print
cdef
cy
.
array
farray
=
cy
.
array
(
shape
=
(
2
,
3
),
itemsize
=
sizeof
(
int
),
format
=
"i"
,
mode
=
'fortran'
)
cdef
v
.
array
farray
=
v
.
array
(
shape
=
(
2
,
3
),
itemsize
=
sizeof
(
int
),
format
=
"i"
,
mode
=
'fortran'
)
assert
farray
.
len
==
2
*
3
*
sizeof
(
int
)
assert
farray
.
itemsize
==
sizeof
(
int
)
print
farray
.
strides
[
0
],
farray
.
strides
[
1
]
...
...
@@ -40,29 +41,29 @@ def acquire():
>>> acquire()
'''
cdef
object
[
int
,
ndim
=
1
,
mode
=
"c"
]
buf1d
=
\
cy
.
array
(
shape
=
(
10
,),
itemsize
=
sizeof
(
int
),
format
=
'i'
,
mode
=
'c'
)
array
(
shape
=
(
10
,),
itemsize
=
sizeof
(
int
),
format
=
'i'
,
mode
=
'c'
)
cdef
object
[
int
,
ndim
=
2
,
mode
=
"c"
]
buf2d
=
\
cy
.
array
(
shape
=
(
10
,
10
),
itemsize
=
sizeof
(
int
),
format
=
'i'
)
array
(
shape
=
(
10
,
10
),
itemsize
=
sizeof
(
int
),
format
=
'i'
)
cdef
object
[
unsigned
long
,
ndim
=
3
,
mode
=
'fortran'
]
buf3d
=
\
cy
.
array
(
shape
=
(
1
,
2
,
3
),
itemsize
=
sizeof
(
unsigned
long
),
format
=
'L'
,
mode
=
'fortran'
)
array
(
shape
=
(
1
,
2
,
3
),
itemsize
=
sizeof
(
unsigned
long
),
format
=
'L'
,
mode
=
'fortran'
)
cdef
object
[
long
double
,
ndim
=
3
,
mode
=
'fortran'
]
bufld
=
\
cy
.
array
(
shape
=
(
1
,
2
,
3
),
itemsize
=
sizeof
(
long
double
),
format
=
'g'
,
mode
=
'fortran'
)
array
(
shape
=
(
1
,
2
,
3
),
itemsize
=
sizeof
(
long
double
),
format
=
'g'
,
mode
=
'fortran'
)
def
full_or_strided
():
'''
>>> full_or_strided()
'''
cdef
object
[
float
,
ndim
=
2
,
mode
=
'full'
]
fullbuf
=
\
cy
.
array
(
shape
=
(
10
,
10
),
itemsize
=
sizeof
(
float
),
format
=
'f'
,
mode
=
'c'
)
array
(
shape
=
(
10
,
10
),
itemsize
=
sizeof
(
float
),
format
=
'f'
,
mode
=
'c'
)
cdef
object
[
long
long
int
,
ndim
=
3
,
mode
=
'strided'
]
stridedbuf
=
\
cy
.
array
(
shape
=
(
1
,
2
,
3
),
itemsize
=
sizeof
(
long
long
int
),
format
=
'q'
,
mode
=
'fortran'
)
array
(
shape
=
(
1
,
2
,
3
),
itemsize
=
sizeof
(
long
long
int
),
format
=
'q'
,
mode
=
'fortran'
)
def
dont_allocate_buffer
():
"""
>>> dont_allocate_buffer()
callback called
"""
cdef
cy
.
array
result
=
cy
.
array
((
10
,
10
),
itemsize
=
sizeof
(
int
),
format
=
'i'
,
allocate_buffer
=
False
)
cdef
array
result
=
array
((
10
,
10
),
itemsize
=
sizeof
(
int
),
format
=
'i'
,
allocate_buffer
=
False
)
assert
result
.
data
==
NULL
result
.
callback_free_data
=
callback
result
=
None
...
...
tests/run/cythonarrayutil.pxi
View file @
d82d4fc3
from
libc.stdlib
cimport
malloc
,
free
cimport
cython
from
cython.view
cimport
array
cdef
void
callback
(
void
*
data
):
print
"callback called"
free
(
data
)
def
create_array
(
shape
,
mode
,
use_callback
=
False
):
cdef
cython
.
array
result
=
cython
.
array
(
shape
,
itemsize
=
sizeof
(
int
),
format
=
'i'
,
mode
=
mode
)
cdef
array
result
=
array
(
shape
,
itemsize
=
sizeof
(
int
),
format
=
'i'
,
mode
=
mode
)
cdef
int
*
data
=
<
int
*>
result
.
data
cdef
int
i
,
j
,
cidx
,
fidx
...
...
tests/run/memoryview.pyx
View file @
d82d4fc3
...
...
@@ -7,8 +7,7 @@ u'''
>>> assignmvs()
'''
from
cython.view
cimport
memoryview
from
cython
cimport
array
from
cython.view
cimport
memoryview
,
array
from
cython
cimport
view
cdef
extern
from
"Python.h"
:
...
...
@@ -68,11 +67,11 @@ cdef class TestExcClassExternalDtype(object):
cdef
td_h_double
[:,
:]
arr_double
def
__init__
(
self
):
self
.
arr_float
=
cython
.
array
((
10
,
10
),
itemsize
=
sizeof
(
ext_dtype
),
format
=
'f'
)
self
.
arr_float
=
array
((
10
,
10
),
itemsize
=
sizeof
(
ext_dtype
),
format
=
'f'
)
self
.
arr_float
[:]
=
0.0
self
.
arr_float
[
4
,
4
]
=
2.0
self
.
arr_double
=
cython
.
array
((
10
,
10
),
itemsize
=
sizeof
(
td_h_double
),
format
=
'd'
)
self
.
arr_double
=
array
((
10
,
10
),
itemsize
=
sizeof
(
td_h_double
),
format
=
'd'
)
self
.
arr_double
[:]
=
0.0
self
.
arr_double
[
4
,
4
]
=
2.0
...
...
tests/run/memoryviewattrs.pyx
View file @
d82d4fc3
...
...
@@ -9,7 +9,7 @@ def testcase(func):
cimport
cython
from
cython
cimport
array
from
cython
.view
cimport
array
import
numpy
as
np
cimport
numpy
as
np
...
...
tests/run/memslice.pyx
View file @
d82d4fc3
...
...
@@ -6,6 +6,7 @@ from __future__ import unicode_literals
cimport
cython
from
cython
cimport
view
from
cython.view
cimport
array
from
cython.parallel
cimport
prange
,
parallel
import
gc
...
...
@@ -1555,7 +1556,7 @@ def test_memslice_prange(arg):
src
=
arg
dst
=
cython
.
array
((
<
object
>
src
).
shape
,
sizeof
(
int
),
format
=
"i"
)
dst
=
array
((
<
object
>
src
).
shape
,
sizeof
(
int
),
format
=
"i"
)
cdef
int
i
,
j
,
k
...
...
@@ -1941,7 +1942,7 @@ class SingleObject(object):
return
self
.
value
==
getattr
(
other
,
'value'
,
None
)
or
self
.
value
==
other
cdef
_get_empty_object_slice
(
fill
=
None
):
cdef
cython
.
array
a
=
cython
.
array
((
10
,),
sizeof
(
PyObject
*
),
'O'
)
cdef
array
a
=
array
((
10
,),
sizeof
(
PyObject
*
),
'O'
)
assert
a
.
dtype_is_object
return
a
...
...
@@ -2086,7 +2087,7 @@ def test_dtype_object_scalar_assignment():
"""
>>> test_dtype_object_scalar_assignment()
"""
cdef
object
[:]
m
=
cython
.
array
((
10
,),
sizeof
(
PyObject
*
),
'O'
)
cdef
object
[:]
m
=
array
((
10
,),
sizeof
(
PyObject
*
),
'O'
)
m
[:]
=
SingleObject
(
2
)
assert
m
[
0
]
==
m
[
4
]
==
m
[
-
1
]
==
2
...
...
tests/run/numpy_memoryview.pyx
View file @
d82d4fc3
...
...
@@ -240,7 +240,7 @@ ctypedef td_h_short td_h_cy_short
cdef
void
dealloc_callback
(
void
*
data
):
print
"deallocating..."
def
index
(
cython
.
array
array
):
def
index
(
array
array
):
array
.
callback_free_data
=
dealloc_callback
print
np
.
asarray
(
array
)[
3
,
2
]
...
...
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