Author: Manuel Jacob
Branch:
Changeset: r70053:5cff90211004
Date: 2014-03-18 16:41 +0100
http://bitbucket.org/pypy/pypy/changeset/5cff90211004/
Log: hg merge refactor-buffer-api
Separate the interp-level buffer API from the buffer type exposed to
app-level. The `Buffer` class is now used by `W_MemoryView` and
`W_Buffer`, which is not present in Python 3. Previously `W_Buffer`
was an alias to `Buffer`, which was wrappable itself.
diff --git a/pypy/interpreter/baseobjspace.py b/pypy/interpreter/baseobjspace.py
--- a/pypy/interpreter/baseobjspace.py
+++ b/pypy/interpreter/baseobjspace.py
@@ -194,6 +194,15 @@
def immutable_unique_id(self, space):
return None
+ def buffer_w(self, space):
+ w_impl = space.lookup(self, '__buffer__')
+ if w_impl is not None:
+ w_result = space.get_and_call_function(w_impl, self)
+ from pypy.module.__builtin__.interp_memoryview import W_Buffer
+ if isinstance(w_result, W_Buffer):
+ return w_result.buf
+ self._typed_unwrap_error(space, "buffer")
+
def str_w(self, space):
self._typed_unwrap_error(space, "string")
@@ -1314,10 +1323,7 @@
'to unsigned int'))
def buffer_w(self, w_obj):
- # returns a Buffer instance
- from pypy.interpreter.buffer import Buffer
- w_buffer = self.buffer(w_obj)
- return self.interp_w(Buffer, w_buffer)
+ return w_obj.buffer_w(self)
def rwbuffer_w(self, w_obj):
# returns a RWBuffer instance
@@ -1677,7 +1683,6 @@
('set', 'set', 3, ['__set__']),
('delete', 'delete', 2, ['__delete__']),
('userdel', 'del', 1, ['__del__']),
- ('buffer', 'buffer', 1, ['__buffer__']), # see buffer.py
]
ObjSpace.BuiltinModuleTable = [
diff --git a/pypy/interpreter/buffer.py b/pypy/interpreter/buffer.py
--- a/pypy/interpreter/buffer.py
+++ b/pypy/interpreter/buffer.py
@@ -1,30 +1,12 @@
"""
Buffer protocol support.
"""
+from pypy.interpreter.error import OperationError
+from rpython.rlib.objectmodel import import_from_mixin
-# The implementation of the buffer protocol. The basic idea is that we
-# can ask any app-level object for a 'buffer' view on it, by calling its
-# __buffer__() special method. It should return a wrapped instance of a
-# subclass of the Buffer class defined below. Note that __buffer__() is
-# a PyPy-only extension to the Python language, made necessary by the
-# fact that it's not natural in PyPy to hack an interp-level-only
-# interface.
-# In normal usage, the convenience method space.buffer_w() should be
-# used to get directly a Buffer instance. Doing so also gives you for
-# free the typecheck that __buffer__() really returned a wrapped Buffer.
-
-import operator
-from pypy.interpreter.baseobjspace import W_Root
-from pypy.interpreter.typedef import TypeDef
-from pypy.interpreter.gateway import interp2app, unwrap_spec
-from pypy.interpreter.error import OperationError
-from rpython.rlib.objectmodel import compute_hash, import_from_mixin
-from rpython.rlib.rstring import StringBuilder
-
-
-class Buffer(W_Root):
- """Abstract base class for memory views."""
+class Buffer(object):
+ """Abstract base class for buffers."""
__slots__ = () # no extra slot here
@@ -47,94 +29,12 @@
def get_raw_address(self):
raise ValueError("no raw buffer")
+
def is_writable(self):
return False
- # __________ app-level support __________
-
- def descr_len(self, space):
- return space.wrap(self.getlength())
-
- def descr_getitem(self, space, w_index):
- start, stop, step, size = space.decode_index4(w_index,
self.getlength())
- if step == 0: # index only
- return space.wrap(self.getitem(start))
- res = self.getslice(start, stop, step, size)
- return space.wrap(res)
-
- @unwrap_spec(newstring='bufferstr')
- def descr_setitem(self, space, w_index, newstring):
- if not isinstance(self, RWBuffer):
- raise OperationError(space.w_TypeError,
- space.wrap("buffer is read-only"))
- start, stop, step, size = space.decode_index4(w_index,
self.getlength())
- if step == 0: # index only
- if len(newstring) != 1:
- msg = 'buffer[index]=x: x must be a single character'
- raise OperationError(space.w_TypeError, space.wrap(msg))
- char = newstring[0] # annotator hint
- self.setitem(start, char)
- elif step == 1:
- if len(newstring) != size:
- msg = "right operand length must match slice length"
- raise OperationError(space.w_ValueError, space.wrap(msg))
- self.setslice(start, newstring)
- else:
- raise OperationError(space.w_ValueError,
- space.wrap("buffer object does not support"
- " slicing with a step"))
-
- def descr__buffer__(self, space):
- return space.wrap(self)
-
- def descr_str(self, space):
- return space.wrap(self.as_str())
-
- @unwrap_spec(other='bufferstr')
- def descr_add(self, space, other):
- return space.wrap(self.as_str() + other)
-
- def _make_descr__cmp(name):
- def descr__cmp(self, space, w_other):
- if not isinstance(w_other, Buffer):
- return space.w_NotImplemented
- # xxx not the most efficient implementation
- str1 = self.as_str()
- str2 = w_other.as_str()
- return space.wrap(getattr(operator, name)(str1, str2))
- descr__cmp.func_name = name
- return descr__cmp
-
- descr_eq = _make_descr__cmp('eq')
- descr_ne = _make_descr__cmp('ne')
- descr_lt = _make_descr__cmp('lt')
- descr_le = _make_descr__cmp('le')
- descr_gt = _make_descr__cmp('gt')
- descr_ge = _make_descr__cmp('ge')
-
- def descr_hash(self, space):
- return space.wrap(compute_hash(self.as_str()))
-
- def descr_mul(self, space, w_times):
- # xxx not the most efficient implementation
- w_string = space.wrap(self.as_str())
- # use the __mul__ method instead of space.mul() so that we
- # return NotImplemented instead of raising a TypeError
- return space.call_method(w_string, '__mul__', w_times)
-
- def descr_repr(self, space):
- if isinstance(self, RWBuffer):
- info = 'read-write buffer'
- else:
- info = 'read-only buffer'
- addrstring = self.getaddrstring(space)
-
- return space.wrap("<%s for 0x%s, size %d>" %
- (info, addrstring, self.getlength()))
-
-
class RWBuffer(Buffer):
- """Abstract base class for read-write memory views."""
+ """Abstract base class for read-write buffers."""
__slots__ = () # no extra slot here
@@ -151,72 +51,6 @@
self.setitem(start + i, string[i])
-@unwrap_spec(offset=int, size=int)
-def descr_buffer__new__(space, w_subtype, w_object, offset=0, size=-1):
- # w_subtype can only be exactly 'buffer' for now
- if not space.is_w(w_subtype, space.gettypefor(Buffer)):
- raise OperationError(space.w_TypeError,
- space.wrap("argument 1 must be 'buffer'"))
-
- if space.isinstance_w(w_object, space.w_unicode):
- # unicode objects support the old buffer interface
- # but not the new buffer interface (change in python 2.7)
- from rpython.rlib.rstruct.unichar import pack_unichar, UNICODE_SIZE
- unistr = space.unicode_w(w_object)
- builder = StringBuilder(len(unistr) * UNICODE_SIZE)
- for unich in unistr:
- pack_unichar(unich, builder)
- from pypy.interpreter.buffer import StringBuffer
- w_buffer = space.wrap(StringBuffer(builder.build()))
- else:
- w_buffer = space.buffer(w_object)
-
- buffer = space.interp_w(Buffer, w_buffer) # type-check
- if offset == 0 and size == -1:
- return w_buffer
- # handle buffer slices
- if offset < 0:
- raise OperationError(space.w_ValueError,
- space.wrap("offset must be zero or positive"))
- if size < -1:
- raise OperationError(space.w_ValueError,
- space.wrap("size must be zero or positive"))
- if isinstance(buffer, RWBuffer):
- buffer = RWSubBuffer(buffer, offset, size)
- else:
- buffer = SubBuffer(buffer, offset, size)
- return space.wrap(buffer)
-
-
-Buffer.typedef = TypeDef(
- "buffer",
- __doc__ = """\
-buffer(object [, offset[, size]])
-
-Create a new buffer object which references the given object.
-The buffer will reference a slice of the target object from the
-start of the object (or at the specified offset). The slice will
-extend to the end of the target object (or with the specified size).
-""",
- __new__ = interp2app(descr_buffer__new__),
- __len__ = interp2app(Buffer.descr_len),
- __getitem__ = interp2app(Buffer.descr_getitem),
- __setitem__ = interp2app(Buffer.descr_setitem),
- __buffer__ = interp2app(Buffer.descr__buffer__),
- __str__ = interp2app(Buffer.descr_str),
- __add__ = interp2app(Buffer.descr_add),
- __eq__ = interp2app(Buffer.descr_eq),
- __ne__ = interp2app(Buffer.descr_ne),
- __lt__ = interp2app(Buffer.descr_lt),
- __le__ = interp2app(Buffer.descr_le),
- __gt__ = interp2app(Buffer.descr_gt),
- __ge__ = interp2app(Buffer.descr_ge),
- __hash__ = interp2app(Buffer.descr_hash),
- __mul__ = interp2app(Buffer.descr_mul),
- __rmul__ = interp2app(Buffer.descr_mul),
- __repr__ = interp2app(Buffer.descr_repr),
-)
-Buffer.typedef.acceptable_as_base_class = False
# ____________________________________________________________
diff --git a/pypy/interpreter/test/test_buffer.py
b/pypy/interpreter/test/test_buffer.py
--- a/pypy/interpreter/test/test_buffer.py
+++ b/pypy/interpreter/test/test_buffer.py
@@ -1,5 +1,5 @@
import py
-from pypy.interpreter.buffer import Buffer
+from pypy.module.__builtin__.interp_memoryview import W_Buffer
from rpython.tool.udir import udir
testdir = udir.ensure('test_buffer', dir=1)
@@ -11,19 +11,17 @@
space = self.space
w_hello = space.wrap('hello world')
buf = space.buffer_w(w_hello)
- assert isinstance(buf, Buffer)
assert buf.getlength() == 11
assert buf.as_str() == 'hello world'
assert buf.getslice(1, 6, 1, 5) == 'ello '
- assert space.buffer_w(space.wrap(buf)) is buf
+ assert space.buffer_w(W_Buffer(buf)) is buf
assert space.bufferstr_w(w_hello) == 'hello world'
- assert space.bufferstr_w(space.buffer(w_hello)) == 'hello world'
+ assert space.bufferstr_w(W_Buffer(space.buffer_w(w_hello))) == 'hello
world'
space.raises_w(space.w_TypeError, space.buffer_w, space.wrap(5))
- space.raises_w(space.w_TypeError, space.buffer, space.wrap(5))
def test_file_write(self):
space = self.space
- w_buffer = space.buffer(space.wrap('hello world'))
+ w_buffer = W_Buffer(space.buffer_w(space.wrap('hello world')))
filename = str(testdir.join('test_file_write'))
space.appexec([w_buffer, space.wrap(filename)], """(buffer, filename):
f = open(filename, 'wb')
diff --git a/pypy/module/__builtin__/interp_memoryview.py
b/pypy/module/__builtin__/interp_memoryview.py
--- a/pypy/module/__builtin__/interp_memoryview.py
+++ b/pypy/module/__builtin__/interp_memoryview.py
@@ -1,14 +1,168 @@
"""
Implementation of the 'buffer' and 'memoryview' types.
"""
+import operator
+
+from pypy.interpreter import buffer
from pypy.interpreter.baseobjspace import W_Root
-from pypy.interpreter import buffer
+from pypy.interpreter.error import OperationError
from pypy.interpreter.gateway import interp2app, unwrap_spec
from pypy.interpreter.typedef import TypeDef, GetSetProperty
-from pypy.interpreter.error import OperationError
-import operator
+from rpython.rlib.objectmodel import compute_hash
+from rpython.rlib.rstring import StringBuilder
-W_Buffer = buffer.Buffer # actually implemented in pypy.interpreter.buffer
+
+def _buffer_setitem(space, buf, w_index, newstring):
+ start, stop, step, size = space.decode_index4(w_index, buf.getlength())
+ if step == 0: # index only
+ if len(newstring) != 1:
+ msg = 'buffer[index]=x: x must be a single character'
+ raise OperationError(space.w_TypeError, space.wrap(msg))
+ char = newstring[0] # annotator hint
+ buf.setitem(start, char)
+ elif step == 1:
+ if len(newstring) != size:
+ msg = "right operand length must match slice length"
+ raise OperationError(space.w_ValueError, space.wrap(msg))
+ buf.setslice(start, newstring)
+ else:
+ raise OperationError(space.w_ValueError,
+ space.wrap("buffer object does not support"
+ " slicing with a step"))
+
+
+class W_Buffer(W_Root):
+ """Implement the built-in 'buffer' type as a thin wrapper around
+ an interp-level buffer.
+ """
+
+ def __init__(self, buf):
+ self.buf = buf
+
+ def buffer_w(self, space):
+ return self.buf
+
+ @staticmethod
+ @unwrap_spec(offset=int, size=int)
+ def descr_new_buffer(space, w_subtype, w_object, offset=0, size=-1):
+ if space.isinstance_w(w_object, space.w_unicode):
+ # unicode objects support the old buffer interface
+ # but not the new buffer interface (change in python 2.7)
+ from rpython.rlib.rstruct.unichar import pack_unichar, UNICODE_SIZE
+ unistr = space.unicode_w(w_object)
+ builder = StringBuilder(len(unistr) * UNICODE_SIZE)
+ for unich in unistr:
+ pack_unichar(unich, builder)
+ from pypy.interpreter.buffer import StringBuffer
+ buf = StringBuffer(builder.build())
+ else:
+ buf = space.buffer_w(w_object)
+
+ if offset == 0 and size == -1:
+ return W_Buffer(buf)
+ # handle buffer slices
+ if offset < 0:
+ raise OperationError(space.w_ValueError,
+ space.wrap("offset must be zero or positive"))
+ if size < -1:
+ raise OperationError(space.w_ValueError,
+ space.wrap("size must be zero or positive"))
+ if isinstance(buf, buffer.RWBuffer):
+ buf = buffer.RWSubBuffer(buf, offset, size)
+ else:
+ buf = buffer.SubBuffer(buf, offset, size)
+ return W_Buffer(buf)
+
+ def descr_len(self, space):
+ return space.wrap(self.buf.getlength())
+
+ def descr_getitem(self, space, w_index):
+ start, stop, step, size = space.decode_index4(w_index,
self.buf.getlength())
+ if step == 0: # index only
+ return space.wrap(self.buf.getitem(start))
+ res = self.buf.getslice(start, stop, step, size)
+ return space.wrap(res)
+
+ @unwrap_spec(newstring='bufferstr')
+ def descr_setitem(self, space, w_index, newstring):
+ if not isinstance(self.buf, buffer.RWBuffer):
+ raise OperationError(space.w_TypeError,
+ space.wrap("buffer is read-only"))
+ _buffer_setitem(space, self.buf, w_index, newstring)
+
+ def descr_str(self, space):
+ return space.wrap(self.buf.as_str())
+
+ @unwrap_spec(other='bufferstr')
+ def descr_add(self, space, other):
+ return space.wrap(self.buf.as_str() + other)
+
+ def _make_descr__cmp(name):
+ def descr__cmp(self, space, w_other):
+ if not isinstance(w_other, W_Buffer):
+ return space.w_NotImplemented
+ # xxx not the most efficient implementation
+ str1 = self.buf.as_str()
+ str2 = w_other.buf.as_str()
+ return space.wrap(getattr(operator, name)(str1, str2))
+ descr__cmp.func_name = name
+ return descr__cmp
+
+ descr_eq = _make_descr__cmp('eq')
+ descr_ne = _make_descr__cmp('ne')
+ descr_lt = _make_descr__cmp('lt')
+ descr_le = _make_descr__cmp('le')
+ descr_gt = _make_descr__cmp('gt')
+ descr_ge = _make_descr__cmp('ge')
+
+ def descr_hash(self, space):
+ return space.wrap(compute_hash(self.buf.as_str()))
+
+ def descr_mul(self, space, w_times):
+ # xxx not the most efficient implementation
+ w_string = space.wrap(self.buf.as_str())
+ # use the __mul__ method instead of space.mul() so that we
+ # return NotImplemented instead of raising a TypeError
+ return space.call_method(w_string, '__mul__', w_times)
+
+ def descr_repr(self, space):
+ if isinstance(self.buf, buffer.RWBuffer):
+ info = 'read-write buffer'
+ else:
+ info = 'read-only buffer'
+ addrstring = self.getaddrstring(space)
+
+ return space.wrap("<%s for 0x%s, size %d>" %
+ (info, addrstring, self.buf.getlength()))
+
+W_Buffer.typedef = TypeDef(
+ "buffer",
+ __doc__ = """\
+buffer(object [, offset[, size]])
+
+Create a new buffer object which references the given object.
+The buffer will reference a slice of the target object from the
+start of the object (or at the specified offset). The slice will
+extend to the end of the target object (or with the specified size).
+""",
+ __new__ = interp2app(W_Buffer.descr_new_buffer),
+ __len__ = interp2app(W_Buffer.descr_len),
+ __getitem__ = interp2app(W_Buffer.descr_getitem),
+ __setitem__ = interp2app(W_Buffer.descr_setitem),
+ __str__ = interp2app(W_Buffer.descr_str),
+ __add__ = interp2app(W_Buffer.descr_add),
+ __eq__ = interp2app(W_Buffer.descr_eq),
+ __ne__ = interp2app(W_Buffer.descr_ne),
+ __lt__ = interp2app(W_Buffer.descr_lt),
+ __le__ = interp2app(W_Buffer.descr_le),
+ __gt__ = interp2app(W_Buffer.descr_gt),
+ __ge__ = interp2app(W_Buffer.descr_ge),
+ __hash__ = interp2app(W_Buffer.descr_hash),
+ __mul__ = interp2app(W_Buffer.descr_mul),
+ __rmul__ = interp2app(W_Buffer.descr_mul),
+ __repr__ = interp2app(W_Buffer.descr_repr),
+)
+W_Buffer.typedef.acceptable_as_base_class = False
class W_MemoryView(W_Root):
@@ -17,9 +171,16 @@
"""
def __init__(self, buf):
- assert isinstance(buf, buffer.Buffer)
self.buf = buf
+ def buffer_w(self, space):
+ return self.buf
+
+ @staticmethod
+ def descr_new_memoryview(space, w_subtype, w_object):
+ w_memoryview = W_MemoryView(space.buffer_w(w_object))
+ return w_memoryview
+
def _make_descr__cmp(name):
def descr__cmp(self, space, w_other):
if isinstance(w_other, W_MemoryView):
@@ -29,14 +190,14 @@
return space.wrap(getattr(operator, name)(str1, str2))
try:
- w_buf = space.buffer(w_other)
+ buf = space.buffer_w(w_other)
except OperationError, e:
if not e.match(space, space.w_TypeError):
raise
return space.w_NotImplemented
else:
str1 = self.as_str()
- str2 = space.buffer_w(w_buf).as_str()
+ str2 = buf.as_str()
return space.wrap(getattr(operator, name)(str1, str2))
descr__cmp.func_name = name
return descr__cmp
@@ -102,15 +263,13 @@
@unwrap_spec(newstring='bufferstr')
def descr_setitem(self, space, w_index, newstring):
- buf = self.buf
- if isinstance(buf, buffer.RWBuffer):
- buf.descr_setitem(space, w_index, newstring)
- else:
+ if not isinstance(self.buf, buffer.RWBuffer):
raise OperationError(space.w_TypeError,
space.wrap("cannot modify read-only memory"))
+ _buffer_setitem(space, self.buf, w_index, newstring)
def descr_len(self, space):
- return self.buf.descr_len(space)
+ return space.wrap(self.buf.getlength())
def w_get_format(self, space):
return space.wrap("B")
@@ -134,18 +293,12 @@
# I've never seen anyone filling this field
return space.w_None
-
-def descr_new(space, w_subtype, w_object):
- memoryview = W_MemoryView(space.buffer(w_object))
- return space.wrap(memoryview)
-
W_MemoryView.typedef = TypeDef(
"memoryview",
__doc__ = """\
Create a new memoryview object which references the given object.
""",
- __new__ = interp2app(descr_new),
- __buffer__ = interp2app(W_MemoryView.descr_buffer),
+ __new__ = interp2app(W_MemoryView.descr_new_memoryview),
__eq__ = interp2app(W_MemoryView.descr_eq),
__ge__ = interp2app(W_MemoryView.descr_ge),
__getitem__ = interp2app(W_MemoryView.descr_getitem),
diff --git a/pypy/module/__pypy__/bytebuffer.py
b/pypy/module/__pypy__/bytebuffer.py
--- a/pypy/module/__pypy__/bytebuffer.py
+++ b/pypy/module/__pypy__/bytebuffer.py
@@ -4,6 +4,7 @@
from pypy.interpreter.buffer import RWBuffer
from pypy.interpreter.gateway import unwrap_spec
+from pypy.module.__builtin__.interp_memoryview import W_Buffer
class ByteBuffer(RWBuffer):
@@ -23,4 +24,4 @@
@unwrap_spec(length=int)
def bytebuffer(space, length):
- return space.wrap(ByteBuffer(length))
+ return W_Buffer(ByteBuffer(length))
diff --git a/pypy/module/_cffi_backend/cbuffer.py
b/pypy/module/_cffi_backend/cbuffer.py
--- a/pypy/module/_cffi_backend/cbuffer.py
+++ b/pypy/module/_cffi_backend/cbuffer.py
@@ -4,6 +4,7 @@
from pypy.interpreter.gateway import unwrap_spec, interp2app
from pypy.interpreter.typedef import TypeDef, make_weakref_descr
from pypy.module._cffi_backend import cdataobj, ctypeptr, ctypearray
+from pypy.module.__builtin__.interp_memoryview import W_Buffer
from rpython.rtyper.annlowlevel import llstr
from rpython.rtyper.lltypesystem import rffi
@@ -39,38 +40,19 @@
copy_string_to_raw(llstr(string), raw_cdata, 0, len(string))
-class MiniBuffer(W_Root):
- # a different subclass of W_Root for the MiniBuffer, because we
- # want a slightly different (simplified) API at the level of Python.
+# Override the typedef to narrow down the interface that's exposed to app-level
+class MiniBuffer(W_Buffer):
def __init__(self, buffer, keepalive=None):
- self.buffer = buffer
+ W_Buffer.__init__(self, buffer)
self.keepalive = keepalive
- def descr_len(self, space):
- return self.buffer.descr_len(space)
-
- def descr_getitem(self, space, w_index):
- return self.buffer.descr_getitem(space, w_index)
-
- @unwrap_spec(newstring='bufferstr')
- def descr_setitem(self, space, w_index, newstring):
- self.buffer.descr_setitem(space, w_index, newstring)
-
- def descr__buffer__(self, space):
- return self.buffer.descr__buffer__(space)
-
- def descr_str(self, space):
- return space.wrap(self.buffer.as_str())
-
-
MiniBuffer.typedef = TypeDef(
"buffer",
__module__ = "_cffi_backend",
__len__ = interp2app(MiniBuffer.descr_len),
__getitem__ = interp2app(MiniBuffer.descr_getitem),
__setitem__ = interp2app(MiniBuffer.descr_setitem),
- __buffer__ = interp2app(MiniBuffer.descr__buffer__),
__weakref__ = make_weakref_descr(MiniBuffer),
__str__ = interp2app(MiniBuffer.descr_str),
)
diff --git a/pypy/module/_io/interp_bufferedio.py
b/pypy/module/_io/interp_bufferedio.py
--- a/pypy/module/_io/interp_bufferedio.py
+++ b/pypy/module/_io/interp_bufferedio.py
@@ -5,6 +5,7 @@
TypeDef, GetSetProperty, generic_new_descr, interp_attrproperty_w)
from pypy.interpreter.gateway import interp2app, unwrap_spec, WrappedDefault
from pypy.interpreter.buffer import RWBuffer
+from pypy.module.__builtin__.interp_memoryview import W_Buffer
from rpython.rlib.rstring import StringBuilder
from rpython.rlib.rarithmetic import r_longlong, intmask
from rpython.rlib import rposix
@@ -511,7 +512,7 @@
def _raw_read(self, space, buffer, start, length):
length = intmask(length)
- w_buf = space.wrap(RawBuffer(buffer, start, length))
+ w_buf = W_Buffer(RawBuffer(buffer, start, length))
while True:
try:
w_size = space.call_method(self.w_raw, "readinto", w_buf)
diff --git a/pypy/module/_rawffi/array.py b/pypy/module/_rawffi/array.py
--- a/pypy/module/_rawffi/array.py
+++ b/pypy/module/_rawffi/array.py
@@ -207,7 +207,6 @@
__setitem__ = interp2app(W_ArrayInstance.descr_setitem),
__getitem__ = interp2app(W_ArrayInstance.descr_getitem),
__len__ = interp2app(W_ArrayInstance.getlength),
- __buffer__ = interp2app(W_ArrayInstance.descr_buffer),
buffer = GetSetProperty(W_ArrayInstance.getbuffer),
shape = interp_attrproperty('shape', W_ArrayInstance),
free = interp2app(W_ArrayInstance.free),
@@ -232,7 +231,6 @@
__setitem__ = interp2app(W_ArrayInstance.descr_setitem),
__getitem__ = interp2app(W_ArrayInstance.descr_getitem),
__len__ = interp2app(W_ArrayInstance.getlength),
- __buffer__ = interp2app(W_ArrayInstance.descr_buffer),
buffer = GetSetProperty(W_ArrayInstance.getbuffer),
shape = interp_attrproperty('shape', W_ArrayInstance),
byptr = interp2app(W_ArrayInstance.byptr),
diff --git a/pypy/module/_rawffi/interp_rawffi.py
b/pypy/module/_rawffi/interp_rawffi.py
--- a/pypy/module/_rawffi/interp_rawffi.py
+++ b/pypy/module/_rawffi/interp_rawffi.py
@@ -352,9 +352,9 @@
lltype.free(self.ll_buffer, flavor='raw')
self.ll_buffer = lltype.nullptr(rffi.VOIDP.TO)
- def descr_buffer(self, space):
+ def buffer_w(self, space):
from pypy.module._rawffi.buffer import RawFFIBuffer
- return space.wrap(RawFFIBuffer(self))
+ return RawFFIBuffer(self)
def getrawsize(self):
raise NotImplementedError("abstract base class")
diff --git a/pypy/module/_rawffi/structure.py b/pypy/module/_rawffi/structure.py
--- a/pypy/module/_rawffi/structure.py
+++ b/pypy/module/_rawffi/structure.py
@@ -364,7 +364,6 @@
__repr__ = interp2app(W_StructureInstance.descr_repr),
__getattr__ = interp2app(W_StructureInstance.getattr),
__setattr__ = interp2app(W_StructureInstance.setattr),
- __buffer__ = interp2app(W_StructureInstance.descr_buffer),
buffer = GetSetProperty(W_StructureInstance.getbuffer),
free = interp2app(W_StructureInstance.free),
shape = interp_attrproperty('shape', W_StructureInstance),
@@ -387,7 +386,6 @@
__repr__ = interp2app(W_StructureInstance.descr_repr),
__getattr__ = interp2app(W_StructureInstance.getattr),
__setattr__ = interp2app(W_StructureInstance.setattr),
- __buffer__ = interp2app(W_StructureInstance.descr_buffer),
buffer = GetSetProperty(W_StructureInstance.getbuffer),
shape = interp_attrproperty('shape', W_StructureInstance),
byptr = interp2app(W_StructureInstance.byptr),
diff --git a/pypy/module/array/interp_array.py
b/pypy/module/array/interp_array.py
--- a/pypy/module/array/interp_array.py
+++ b/pypy/module/array/interp_array.py
@@ -132,6 +132,9 @@
self.len = 0
self.allocated = 0
+ def buffer_w(self, space):
+ return ArrayBuffer(self)
+
def descr_append(self, space, w_x):
""" append(x)
@@ -462,9 +465,6 @@
# Misc methods
- def descr_buffer(self, space):
- return space.wrap(ArrayBuffer(self))
-
def descr_repr(self, space):
if self.len == 0:
return space.wrap("array('%s')" % self.typecode)
@@ -508,7 +508,6 @@
__radd__ = interp2app(W_ArrayBase.descr_radd),
__rmul__ = interp2app(W_ArrayBase.descr_rmul),
- __buffer__ = interp2app(W_ArrayBase.descr_buffer),
__repr__ = interp2app(W_ArrayBase.descr_repr),
itemsize = GetSetProperty(descr_itemsize),
diff --git a/pypy/module/cpyext/bufferobject.py
b/pypy/module/cpyext/bufferobject.py
--- a/pypy/module/cpyext/bufferobject.py
+++ b/pypy/module/cpyext/bufferobject.py
@@ -3,8 +3,9 @@
cpython_api, Py_ssize_t, cpython_struct, bootstrap_function,
PyObjectFields, PyObject)
from pypy.module.cpyext.pyobject import make_typedescr, Py_DecRef, make_ref
-from pypy.interpreter.buffer import Buffer, StringBuffer, SubBuffer
+from pypy.interpreter.buffer import StringBuffer, SubBuffer
from pypy.interpreter.error import OperationError
+from pypy.module.__builtin__.interp_memoryview import W_Buffer
from pypy.module.array.interp_array import ArrayBuffer
@@ -24,7 +25,7 @@
@bootstrap_function
def init_bufferobject(space):
"Type description of PyBufferObject"
- make_typedescr(space.gettypefor(Buffer).instancetypedef,
+ make_typedescr(space.gettypefor(W_Buffer).instancetypedef,
basestruct=PyBufferObject.TO,
attach=buffer_attach,
dealloc=buffer_dealloc,
@@ -39,23 +40,26 @@
rffi.setintfield(py_buf, 'c_b_readonly', 1)
rffi.setintfield(py_buf, 'c_b_hash', -1)
- if isinstance(w_obj, SubBuffer):
- py_buf.c_b_offset = w_obj.offset
- w_obj = w_obj.buffer
+ assert isinstance(w_obj, W_Buffer)
+ buf = w_obj.buf
- # If w_obj already allocated a fixed buffer, use it, and keep a
- # reference to w_obj.
+ if isinstance(buf, SubBuffer):
+ py_buf.c_b_offset = buf.offset
+ buf = buf.buffer
+
+ # If buf already allocated a fixed buffer, use it, and keep a
+ # reference to buf.
# Otherwise, b_base stays NULL, and we own the b_ptr.
- if isinstance(w_obj, StringBuffer):
+ if isinstance(buf, StringBuffer):
py_buf.c_b_base = lltype.nullptr(PyObject.TO)
- py_buf.c_b_ptr = rffi.cast(rffi.VOIDP, rffi.str2charp(w_obj.value))
- py_buf.c_b_size = w_obj.getlength()
- elif isinstance(w_obj, ArrayBuffer):
- w_base = w_obj.array
+ py_buf.c_b_ptr = rffi.cast(rffi.VOIDP, rffi.str2charp(buf.value))
+ py_buf.c_b_size = buf.getlength()
+ elif isinstance(buf, ArrayBuffer):
+ w_base = buf.array
py_buf.c_b_base = make_ref(space, w_base)
- py_buf.c_b_ptr = rffi.cast(rffi.VOIDP, w_obj.array._charbuf_start())
- py_buf.c_b_size = w_obj.getlength()
+ py_buf.c_b_ptr = rffi.cast(rffi.VOIDP, buf.array._charbuf_start())
+ py_buf.c_b_size = buf.getlength()
else:
raise OperationError(space.w_NotImplementedError, space.wrap(
"buffer flavor not supported"))
diff --git a/pypy/module/cpyext/slotdefs.py b/pypy/module/cpyext/slotdefs.py
--- a/pypy/module/cpyext/slotdefs.py
+++ b/pypy/module/cpyext/slotdefs.py
@@ -14,8 +14,9 @@
from pypy.module.cpyext.pyobject import from_ref
from pypy.module.cpyext.pyerrors import PyErr_Occurred
from pypy.module.cpyext.state import State
+from pypy.module.__builtin__.interp_memoryview import W_Buffer
from pypy.interpreter.error import OperationError, oefmt
-from pypy.interpreter.buffer import Buffer as W_Buffer
+from pypy.interpreter.buffer import Buffer
from pypy.interpreter.argument import Arguments
from rpython.rlib.unroll import unrolling_iterable
from rpython.rlib.objectmodel import specialize
@@ -228,7 +229,7 @@
check_num_args(space, w_args, 0)
return space.wrap(generic_cpy_call(space, func_target, w_self))
-class CPyBuffer(W_Buffer):
+class CPyBuffer(Buffer):
# Similar to Py_buffer
def __init__(self, ptr, size, w_obj):
@@ -249,7 +250,7 @@
size = generic_cpy_call(space, func_target, w_self, index, ptr)
if size < 0:
space.fromcache(State).check_and_raise_exception(always=True)
- return space.wrap(CPyBuffer(ptr[0], size, w_self))
+ return W_Buffer(CPyBuffer(ptr[0], size, w_self))
def get_richcmp_func(OP_CONST):
def inner(space, w_self, w_args, func):
diff --git a/pypy/module/cpyext/typeobject.py b/pypy/module/cpyext/typeobject.py
--- a/pypy/module/cpyext/typeobject.py
+++ b/pypy/module/cpyext/typeobject.py
@@ -28,7 +28,7 @@
PyNumberMethods, PyMappingMethods, PySequenceMethods, PyBufferProcs)
from pypy.module.cpyext.slotdefs import (
slotdefs_for_tp_slots, slotdefs_for_wrappers, get_slot_tp_function)
-from pypy.interpreter.buffer import Buffer
+from pypy.module.__builtin__.interp_memoryview import W_Buffer
from pypy.interpreter.error import OperationError
from rpython.rlib.rstring import rsplit
from rpython.rlib.objectmodel import specialize
@@ -509,7 +509,7 @@
# buffer protocol
if space.is_w(w_type, space.w_str):
setup_string_buffer_procs(space, pto)
- if space.is_w(w_type, space.gettypefor(Buffer)):
+ if space.is_w(w_type, space.gettypefor(W_Buffer)):
setup_buffer_buffer_procs(space, pto)
pto.c_tp_free = llhelper(PyObject_Del.api_func.functype,
diff --git a/pypy/module/micronumpy/boxes.py b/pypy/module/micronumpy/boxes.py
--- a/pypy/module/micronumpy/boxes.py
+++ b/pypy/module/micronumpy/boxes.py
@@ -342,8 +342,8 @@
def descr_copy(self, space):
return self.convert_to(space, self.get_dtype(space))
- def descr_buffer(self, space):
- return self.descr_ravel(space).descr_get_data(space)
+ def buffer_w(self, space):
+ return self.descr_ravel(space).buffer_w(space)
def descr_byteswap(self, space):
return self.get_dtype(space).itemtype.byteswap(self)
@@ -553,7 +553,6 @@
__nonzero__ = interp2app(W_GenericBox.descr_nonzero),
__oct__ = interp2app(W_GenericBox.descr_oct),
__hex__ = interp2app(W_GenericBox.descr_hex),
- __buffer__ = interp2app(W_GenericBox.descr_buffer),
__add__ = interp2app(W_GenericBox.descr_add),
__sub__ = interp2app(W_GenericBox.descr_sub),
diff --git a/pypy/module/micronumpy/ndarray.py
b/pypy/module/micronumpy/ndarray.py
--- a/pypy/module/micronumpy/ndarray.py
+++ b/pypy/module/micronumpy/ndarray.py
@@ -7,6 +7,7 @@
from rpython.rlib.rawstorage import RAW_STORAGE_PTR
from rpython.rtyper.lltypesystem import rffi
from rpython.tool.sourcetools import func_with_new_name
+from pypy.module.__builtin__.interp_memoryview import W_Buffer
from pypy.module.micronumpy import descriptor, ufuncs, boxes, arrayops, loop, \
support, constants as NPY
from pypy.module.micronumpy.appbridge import get_appbridge_cache
@@ -602,8 +603,11 @@
raise OperationError(space.w_NotImplementedError, space.wrap(
"ctypes not implemented yet"))
+ def buffer_w(self, space):
+ return self.implementation.get_buffer(space)
+
def descr_get_data(self, space):
- return self.implementation.get_buffer(space)
+ return W_Buffer(self.buffer_w(space))
@unwrap_spec(offset=int, axis1=int, axis2=int)
def descr_diagonal(self, space, offset=0, axis1=0, axis2=1):
@@ -1259,7 +1263,6 @@
__float__ = interp2app(W_NDimArray.descr_float),
__hex__ = interp2app(W_NDimArray.descr_hex),
__oct__ = interp2app(W_NDimArray.descr_oct),
- __buffer__ = interp2app(W_NDimArray.descr_get_data),
__index__ = interp2app(W_NDimArray.descr_index),
__pos__ = interp2app(W_NDimArray.descr_pos),
diff --git a/pypy/module/mmap/interp_mmap.py b/pypy/module/mmap/interp_mmap.py
--- a/pypy/module/mmap/interp_mmap.py
+++ b/pypy/module/mmap/interp_mmap.py
@@ -17,6 +17,10 @@
self.space = space
self.mmap = mmap_obj
+ def buffer_w(self, space):
+ self.check_valid()
+ return MMapBuffer(self.space, self.mmap)
+
def close(self):
self.mmap.close()
@@ -196,10 +200,6 @@
self.mmap.setitem(start, value[i])
start += step
- def descr_buffer(self):
- self.check_valid()
- return self.space.wrap(MMapBuffer(self.space, self.mmap))
-
if rmmap._POSIX:
@unwrap_spec(fileno=int, length=int, flags=int,
@@ -256,7 +256,6 @@
__len__ = interp2app(W_MMap.__len__),
__getitem__ = interp2app(W_MMap.descr_getitem),
__setitem__ = interp2app(W_MMap.descr_setitem),
- __buffer__ = interp2app(W_MMap.descr_buffer),
)
constants = rmmap.constants
diff --git a/pypy/module/pyexpat/interp_pyexpat.py
b/pypy/module/pyexpat/interp_pyexpat.py
--- a/pypy/module/pyexpat/interp_pyexpat.py
+++ b/pypy/module/pyexpat/interp_pyexpat.py
@@ -429,7 +429,7 @@
self.handlers = [None] * NB_HANDLERS
- self.buffer_w = None
+ self.buffer_w_ = None
self.buffer_size = 8192
self.buffer_used = 0
self.w_character_data_handler = None
@@ -541,7 +541,7 @@
def buffer_string(self, space, w_string, length):
ll_length = rffi.cast(lltype.Signed, length)
- if self.buffer_w is not None:
+ if self.buffer_w_ is not None:
if self.buffer_used + ll_length > self.buffer_size:
self.flush_character_buffer(space)
# handler might have changed; drop the rest on the floor
@@ -549,11 +549,11 @@
if self.w_character_data_handler is None:
return True
if ll_length <= self.buffer_size:
- self.buffer_w.append(w_string)
+ self.buffer_w_.append(w_string)
self.buffer_used += ll_length
return True
else:
- self.buffer_w = []
+ self.buffer_w_ = []
self.buffer_used = 0
return False
@@ -685,12 +685,12 @@
return space.wrap(parser)
def flush_character_buffer(self, space):
- if not self.buffer_w:
+ if not self.buffer_w_:
return
w_data = space.call_function(
space.getattr(space.wrap(''), space.wrap('join')),
- space.newlist(self.buffer_w))
- self.buffer_w = []
+ space.newlist(self.buffer_w_))
+ self.buffer_w_ = []
self.buffer_used = 0
if self.w_character_data_handler:
@@ -735,14 +735,14 @@
self.buffer_size = value
def get_buffer_text(self, space):
- return space.wrap(self.buffer_w is not None)
+ return space.wrap(self.buffer_w_ is not None)
def set_buffer_text(self, space, w_value):
if space.is_true(w_value):
- self.buffer_w = []
+ self.buffer_w_ = []
self.buffer_used = 0
else:
self.flush_character_buffer(space)
- self.buffer_w = None
+ self.buffer_w_ = None
def get_intern(self, space):
if self.w_intern:
diff --git a/pypy/objspace/fake/objspace.py b/pypy/objspace/fake/objspace.py
--- a/pypy/objspace/fake/objspace.py
+++ b/pypy/objspace/fake/objspace.py
@@ -292,6 +292,11 @@
ec._py_repr = None
return ec
+ def buffer_w(self, w_obj):
+ from pypy.interpreter.buffer import Buffer
+ is_root(w_obj)
+ return Buffer()
+
def unicode_from_object(self, w_obj):
return w_some_obj()
diff --git a/pypy/objspace/std/bytearrayobject.py
b/pypy/objspace/std/bytearrayobject.py
--- a/pypy/objspace/std/bytearrayobject.py
+++ b/pypy/objspace/std/bytearrayobject.py
@@ -27,6 +27,9 @@
"""representation for debugging purposes"""
return "%s(%s)" % (w_self.__class__.__name__, ''.join(w_self.data))
+ def buffer_w(w_self, space):
+ return BytearrayBuffer(w_self.data)
+
def _new(self, value):
return W_BytearrayObject(_make_data(value))
@@ -295,9 +298,6 @@
def descr_iter(self, space):
return space.newseqiter(self)
- def descr_buffer(self, space):
- return BytearrayBuffer(self.data)
-
def descr_inplace_add(self, space, w_other):
if isinstance(w_other, W_BytearrayObject):
self.data += w_other.data
@@ -1011,7 +1011,6 @@
__init__ = interp2app(W_BytearrayObject.descr_init,
doc=BytearrayDocstrings.__init__.__doc__),
- __buffer__ = interp2app(W_BytearrayObject.descr_buffer),
__iadd__ = interp2app(W_BytearrayObject.descr_inplace_add,
doc=BytearrayDocstrings.__iadd__.__doc__),
diff --git a/pypy/objspace/std/bytesobject.py b/pypy/objspace/std/bytesobject.py
--- a/pypy/objspace/std/bytesobject.py
+++ b/pypy/objspace/std/bytesobject.py
@@ -424,9 +424,6 @@
of the specified width. The string S is never truncated.
"""
- def descr_buffer(self, space):
- pass
-
class W_BytesObject(W_AbstractBytesObject):
import_from_mixin(StringMethods)
@@ -445,6 +442,9 @@
def str_w(self, space):
return self._value
+ def buffer_w(w_self, space):
+ return StringBuffer(w_self._value)
+
def listview_bytes(self):
return _create_list_from_bytes(self._value)
@@ -567,9 +567,6 @@
def descr_mod(self, space, w_values):
return mod_format(space, self, w_values, do_unicode=False)
- def descr_buffer(self, space):
- return space.wrap(StringBuffer(self._value))
-
def descr_eq(self, space, w_other):
if space.config.objspace.std.withstrbuf:
from pypy.objspace.std.strbufobject import W_StringBufferObject
@@ -853,7 +850,6 @@
format = interpindirect2app(W_BytesObject.descr_format),
__format__ = interpindirect2app(W_BytesObject.descr__format__),
__mod__ = interpindirect2app(W_BytesObject.descr_mod),
- __buffer__ = interpindirect2app(W_AbstractBytesObject.descr_buffer),
__getnewargs__ = interpindirect2app(
W_AbstractBytesObject.descr_getnewargs),
_formatter_parser = interp2app(W_BytesObject.descr_formatter_parser),
diff --git a/pypy/objspace/std/intobject.py b/pypy/objspace/std/intobject.py
--- a/pypy/objspace/std/intobject.py
+++ b/pypy/objspace/std/intobject.py
@@ -696,7 +696,7 @@
else:
# If object supports the buffer interface
try:
- w_buffer = space.buffer(w_value)
+ buf = space.buffer_w(w_value)
except OperationError as e:
if not e.match(space, space.w_TypeError):
raise
@@ -704,7 +704,6 @@
"int() argument must be a string or a number, "
"not '%T'", w_value)
else:
- buf = space.interp_w(Buffer, w_buffer)
value, w_longval = _string_to_int_or_long(space, w_value,
buf.as_str())
ok = True
diff --git a/pypy/objspace/std/longobject.py b/pypy/objspace/std/longobject.py
--- a/pypy/objspace/std/longobject.py
+++ b/pypy/objspace/std/longobject.py
@@ -513,7 +513,7 @@
unicode_to_decimal_w(space, w_value))
else:
try:
- w_buffer = space.buffer(w_value)
+ buf = space.buffer_w(w_value)
except OperationError, e:
if not e.match(space, space.w_TypeError):
raise
@@ -521,7 +521,6 @@
"long() argument must be a string or a number, "
"not '%T'", w_value)
else:
- buf = space.interp_w(Buffer, w_buffer)
return _string_to_w_long(space, w_longtype, w_value,
buf.as_str())
else:
diff --git a/pypy/objspace/std/strbufobject.py
b/pypy/objspace/std/strbufobject.py
--- a/pypy/objspace/std/strbufobject.py
+++ b/pypy/objspace/std/strbufobject.py
@@ -2,12 +2,12 @@
import py
-from pypy.objspace.std.basestringtype import basestring_typedef
-from pypy.objspace.std.bytesobject import W_AbstractBytesObject, W_BytesObject
-from pypy.objspace.std.stdtypedef import StdTypeDef
+from pypy.objspace.std.bytesobject import (W_AbstractBytesObject,
+ W_BytesObject, StringBuffer)
from pypy.interpreter.gateway import interp2app, unwrap_spec
from rpython.rlib.rstring import StringBuilder
+
class W_StringBufferObject(W_AbstractBytesObject):
w_str = None
@@ -36,6 +36,9 @@
def str_w(self, space):
return self.force()
+ def buffer_w(self, space):
+ return StringBuffer(self.force())
+
def descr_len(self, space):
return space.wrap(self.length)
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