Source

pypy / pypy / objspace / std / unicodeobject.py

Full commit
Benjamin Peterso… 51bf3ad 

Armin Rigo 1641ad7 
Anders Chrigströ… b6732e7 
Armin Rigo 1641ad7 
Antonio Cuni 0c4e75d 
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Maciej Fijalkows… 5896230 




Maciej Fijalkows… 2ec917d 
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Anders Chrigströ… b6732e7 
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Armin Rigo e68158a 
Armin Rigo fb61ca7 
Armin Rigo e68158a 



Alex Gaynor 6724e4b 
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Michael Foord 6156649 
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Michael Foord 6156649 
Anders Chrigströ… b6732e7 


Michael Foord 6156649 
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Michael Foord 6156649 
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Nicholas Riley d6d030a 
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Michael Foord 6156649 
Anders Chrigströ… b6732e7 

Michael Foord 6156649 
Anders Chrigströ… b6732e7 


Michael Foord 6156649 
Anders Chrigströ… b6732e7 


Michael Foord 6156649 
Carl Friedrich B… 50d6f91 
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Nicholas Riley d6d030a 
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Carl Friedrich B… 04095a9 
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Carl Friedrich B… 04095a9 
Anders Chrigströ… b6732e7 





Carl Friedrich B… 04095a9 
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Carl Friedrich B… 04095a9 
Anders Chrigströ… b6732e7 
Carl Friedrich B… 4ffbfaf 
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Carl Friedrich B… 04095a9 
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Carl Friedrich B… 04095a9 
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Maciej Fijalkows… acf9d15 
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Alex Gaynor cc2c090 
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Maciej Fijalkows… acf9d15 
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Alex Gaynor cc2c090 
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Alex Gaynor cc2c090 
Anders Chrigströ… b6732e7 
Alex Gaynor cc2c090 
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Alex Gaynor cc2c090 
Anders Chrigströ… b6732e7 
Alex Gaynor cc2c090 

Anders Chrigströ… b6732e7 


Alex Gaynor cc2c090 
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Alex Gaynor cc2c090 

Anders Chrigströ… b6732e7 


Alex Gaynor cc2c090 
Anders Chrigströ… b6732e7 


Alex Gaynor cc2c090 
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Alex Gaynor cc2c090 
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Alex Gaynor cc2c090 

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Carl Friedrich B… 256f961 

Anders Chrigströ… b6732e7 
Carl Friedrich B… c0f8616 

Carl Friedrich B… 256f961 
Maciej Fijalkows… acf9d15 

Carl Friedrich B… 256f961 
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Carl Friedrich B… 256f961 
Anders Chrigströ… b6732e7 

Carl Friedrich B… 256f961 
Maciej Fijalkows… acf9d15 


Carl Friedrich B… 256f961 
Maciej Fijalkows… acf9d15 


Carl Friedrich B… 256f961 

Maciej Fijalkows… 032087c 
Maciej Fijalkows… acf9d15 
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Maciej Fijalkows… acf9d15 




Carl Friedrich B… 256f961 
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Maciej Fijalkows… acf9d15 

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Maciej Fijalkows… acf9d15 
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Carl Friedrich B… 04095a9 
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Ignas Mikalajuna… b35c8f0 
Anders Chrigströ… b6732e7 

Maciej Fijalkows… acf9d15 
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Anders Chrigströ… fa72407 
Anders Chrigströ… b6732e7 

Carl Friedrich B… 04095a9 
Anders Chrigströ… fa72407 
Anders Chrigströ… b6732e7 

Maciej Fijalkows… acf9d15 
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Anders Chrigströ… fa72407 
Anders Chrigströ… b6732e7 

Carl Friedrich B… 04095a9 
Anders Chrigströ… fa72407 
Anders Chrigströ… b6732e7 

Maciej Fijalkows… acf9d15 
Michael Foord 6156649 
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Maciej Fijalkows… acf9d15 
Anders Chrigströ… b6732e7 

Carl Friedrich B… 04095a9 
Anders Chrigströ… b6732e7 






Maciej Fijalkows… acf9d15 
Anders Chrigströ… b6732e7 







Michael Foord 6156649 
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Nicholas Riley d6d030a 
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Nicholas Riley d6d030a 
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Nicholas Riley d6d030a 
Anders Chrigströ… b6732e7 


Carl Friedrich B… 256f961 

Anders Chrigströ… b6732e7 

Carl Friedrich B… 256f961 

Anders Chrigströ… b6732e7 

Carl Friedrich B… 256f961 

Anders Chrigströ… b6732e7 





Carl Friedrich B… 256f961 

Anders Chrigströ… b6732e7 





Carl Friedrich B… 256f961 

Anders Chrigströ… b6732e7 


Maciej Fijalkows… d4acac8 






Maciej Fijalkows… 420349e 
Maciej Fijalkows… d4acac8 



Ignas Mikalajuna… c649a64 
Maciej Fijalkows… d4acac8 


Anders Chrigströ… b6732e7 
Maciej Fijalkows… d4acac8 
Maciej Fijalkows… 420349e 
Maciej Fijalkows… d4acac8 

Ignas Mikalajuna… c649a64 
Maciej Fijalkows… d4acac8 






Anders Chrigströ… b6732e7 








Maciej Fijalkows… acf9d15 

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Ignas Mikalajuna… c649a64 


Armin Rigo 653e816 










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Armin Rigo 653e816 



Ignas Mikalajuna… c649a64 
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Armin Rigo 653e816 

Ignas Mikalajuna… c649a64 
Armin Rigo 653e816 









Ignas Mikalajuna… c649a64 
Antonio Cuni 0c4e75d 

Michael Foord 6156649 
Antonio Cuni 0c4e75d 





Ignas Mikalajuna… c649a64 
Maciej Fijalkows… acf9d15 
Anders Chrigströ… b6732e7 
Maciej Fijalkows… acf9d15 
Anders Chrigströ… b6732e7 

Maciej Fijalkows… acf9d15 
Anders Chrigströ… b6732e7 



Maciej Fijalkows… acf9d15 
Anders Chrigströ… b6732e7 

Maciej Fijalkows… acf9d15 















Anders Chrigströ… b6732e7 
Ignas Mikalajuna… c649a64 
Anders Chrigströ… b6732e7 

Maciej Fijalkows… a21ae3e 




Michael Foord 6156649 


Michael Foord 9b22d7c 
Michael Foord 6156649 


Michael Foord 9b22d7c 
Antonio Cuni c826713 
Maciej Fijalkows… a21ae3e 



Anders Chrigströ… b6732e7 


Maciej Fijalkows… acf9d15 
Antonio Cuni c60b844 

Maciej Fijalkows… a21ae3e 
Maciej Fijalkows… 52cefc4 
Maciej Fijalkows… c281d30 
Antonio Cuni c60b844 
Michael Foord 6156649 
Maciej Fijalkows… c281d30 

Maciej Fijalkows… a21ae3e 
Michael Foord 6156649 
Anders Chrigströ… b6732e7 
Carl Friedrich B… 04095a9 


Anders Chrigströ… b6732e7 
Armin Rigo 9b99f25 

Carl Friedrich B… 04095a9 


Maciej Fijalkows… acf9d15 






Guido Wesdorp f74fa3d 

Maciej Fijalkows… acf9d15 

Guido Wesdorp f74fa3d 
Carl Friedrich B… 3d26440 
Maciej Fijalkows… acf9d15 

Guido Wesdorp f74fa3d 
Maciej Fijalkows… acf9d15 





Guido Wesdorp f74fa3d 

Maciej Fijalkows… acf9d15 

Guido Wesdorp f74fa3d 
Carl Friedrich B… 3d26440 
Maciej Fijalkows… acf9d15 

Guido Wesdorp f74fa3d 

Maciej Fijalkows… acf9d15 









Amaury Forgeot d… c199e69 
Michael Foord 6156649 
Maciej Fijalkows… acf9d15 


Anders Hammarqui… b452f40 
Maciej Fijalkows… 52cefc4 

Anders Hammarqui… b452f40 
Armin Rigo 4ac21ef 
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Maciej Fijalkows… acf9d15 






Anders Lehmann 3381dc9 
Guido Wesdorp f74fa3d 
Maciej Fijalkows… acf9d15 








Amaury Forgeot d… f1491c2 
Maciej Fijalkows… acf9d15 





Justin Peel c5fd944 
Maciej Fijalkows… acf9d15 





Justin Peel c5fd944 
Maciej Fijalkows… acf9d15 





Anders Chrigströ… e95ec86 
Amaury Forgeot d… ff3afc1 


Anders Chrigströ… 31c2369 


Amaury Forgeot d… ff3afc1 
Jason Creighton 5bc5123 
Maciej Fijalkows… ae86ec6 

Armin Rigo c90e6a7 
Maciej Fijalkows… ae86ec6 
Benjamin Peterso… 7e07c00 





Amaury Forgeot d… f63f339 

Benjamin Peterso… 7e07c00 

Amaury Forgeot d… c14ca76 
Benjamin Peterso… 7e07c00 
Maciej Fijalkows… ae86ec6 
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Armin Rigo 6a00154 
Carl Friedrich B… 712cd67 


Maciej Fijalkows… acf9d15 



Anders Chrigströ… b6732e7 
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Anders Chrigströ… b6732e7 


Carl Friedrich B… 04095a9 

Anders Chrigströ… b6732e7 

Carl Friedrich B… 04095a9 

Anders Chrigströ… b6732e7 

Carl Friedrich B… 04095a9 

Anders Chrigströ… b6732e7 

Carl Friedrich B… 04095a9 

Anders Chrigströ… b6732e7 

Carl Friedrich B… 04095a9 

Anders Chrigströ… b6732e7 

Carl Friedrich B… 04095a9 

Anders Chrigströ… b6732e7 

Carl Friedrich B… 04095a9 

Anders Chrigströ… b6732e7 

Carl Friedrich B… 04095a9 

Anders Chrigströ… b6732e7 

Carl Friedrich B… 04095a9 

Anders Chrigströ… b6732e7 

Carl Friedrich B… 04095a9 

Anders Chrigströ… b6732e7 
Ignas Mikalajuna… c649a64 
Carl Friedrich B… 04095a9 

Ignas Mikalajuna… c649a64 
Anders Chrigströ… b6732e7 
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from pypy.objspace.std.model import registerimplementation, W_Object
from pypy.objspace.std.register_all import register_all
from pypy.objspace.std.multimethod import FailedToImplement
from pypy.interpreter import gateway
from pypy.interpreter.error import OperationError, operationerrfmt
from pypy.objspace.std.stringobject import W_StringObject, make_rsplit_with_delim
from pypy.objspace.std.noneobject import W_NoneObject
from pypy.objspace.std.sliceobject import W_SliceObject, normalize_simple_slice
from pypy.objspace.std import slicetype, newformat
from pypy.objspace.std.tupleobject import W_TupleObject
from pypy.rlib.rarithmetic import intmask, ovfcheck
from pypy.rlib.objectmodel import compute_hash, specialize
from pypy.rlib.objectmodel import compute_unique_id
from pypy.rlib.rstring import UnicodeBuilder
from pypy.rlib.runicode import make_unicode_escape_function
from pypy.module.unicodedata import unicodedb
from pypy.tool.sourcetools import func_with_new_name
from pypy.rlib import jit

from pypy.objspace.std.formatting import mod_format
from pypy.objspace.std.stringtype import stringstartswith, stringendswith

class W_AbstractUnicodeObject(W_Object):
    __slots__ = ()

    def is_w(self, space, w_other):
        if not isinstance(w_other, W_AbstractUnicodeObject):
            return False
        if self is w_other:
            return True
        if self.user_overridden_class or w_other.user_overridden_class:
            return False
        return space.unicode_w(self) is space.unicode_w(w_other)

    def immutable_unique_id(self, space):
        if self.user_overridden_class:
            return None
        return space.wrap(compute_unique_id(space.unicode_w(self)))


class W_UnicodeObject(W_AbstractUnicodeObject):
    from pypy.objspace.std.unicodetype import unicode_typedef as typedef
    _immutable_fields_ = ['_value']

    def __init__(w_self, unistr):
        assert isinstance(unistr, unicode)
        w_self._value = unistr

    def __repr__(w_self):
        """ representation for debugging purposes """
        return "%s(%r)" % (w_self.__class__.__name__, w_self._value)

    def unwrap(w_self, space):
        # for testing
        return w_self._value

    def create_if_subclassed(w_self):
        if type(w_self) is W_UnicodeObject:
            return w_self
        return W_UnicodeObject(w_self._value)

    def str_w(self, space):
        return space.str_w(space.str(self))

    def unicode_w(self, space):
        return self._value

    def listview_unicode(w_self):
        return _create_list_from_unicode(w_self._value)

def _create_list_from_unicode(value):
    # need this helper function to allow the jit to look inside and inline
    # listview_unicode
    return [s for s in value]


W_UnicodeObject.EMPTY = W_UnicodeObject(u'')

registerimplementation(W_UnicodeObject)

# Helper for converting int/long
def unicode_to_decimal_w(space, w_unistr):
    if not isinstance(w_unistr, W_UnicodeObject):
        raise operationerrfmt(space.w_TypeError,
                              "expected unicode, got '%s'",
                              space.type(w_unistr).getname(space))
    unistr = w_unistr._value
    result = ['\0'] * len(unistr)
    digits = [ '0', '1', '2', '3', '4',
               '5', '6', '7', '8', '9']
    for i in xrange(len(unistr)):
        uchr = ord(unistr[i])
        if unicodedb.isspace(uchr):
            result[i] = ' '
            continue
        try:
            result[i] = digits[unicodedb.decimal(uchr)]
        except KeyError:
            if 0 < uchr < 256:
                result[i] = chr(uchr)
            else:
                w_encoding = space.wrap('decimal')
                w_start = space.wrap(i)
                w_end = space.wrap(i+1)
                w_reason = space.wrap('invalid decimal Unicode string')
                raise OperationError(space.w_UnicodeEncodeError, space.newtuple([w_encoding, w_unistr, w_start, w_end, w_reason]))
    return ''.join(result)

# string-to-unicode delegation
def delegate_String2Unicode(space, w_str):
    from pypy.objspace.std.unicodetype import unicode_from_string
    w_uni = unicode_from_string(space, w_str)
    assert isinstance(w_uni, W_UnicodeObject) # help the annotator!
    return w_uni

# checks if should trigger an unicode warning
def _unicode_string_comparison(space, w_uni, w_str, inverse, uni_from_str):
    try:
        w_uni2 = uni_from_str(space, w_str)
    except OperationError, e:
        if e.match(space, space.w_UnicodeDecodeError):
            if inverse:
                msg = "Unicode unequal comparison failed to convert both "  \
                      "arguments to Unicode - interpreting them as being unequal"
            else :
                msg = "Unicode equal comparison failed to convert both "    \
                      "arguments to Unicode - interpreting them as being unequal"
            space.warn(msg, space.w_UnicodeWarning)
            return space.newbool(inverse)
        raise
    result = space.eq(w_uni, w_uni2)
    if inverse:
        return space.not_(result)
    return result

def str__Unicode(space, w_uni):
    from pypy.objspace.std.unicodetype import encode_object
    return encode_object(space, w_uni, None, None)

def eq__Unicode_Unicode(space, w_left, w_right):
    return space.newbool(w_left._value == w_right._value)

def eq__Unicode_String(space, w_uni, w_str):
    from pypy.objspace.std.unicodetype import unicode_from_string
    return _unicode_string_comparison(space, w_uni, w_str,
                    False, unicode_from_string)

def ne__Unicode_String(space, w_uni, w_str):
    from pypy.objspace.std.unicodetype import unicode_from_string
    return _unicode_string_comparison(space, w_uni, w_str,
                    True, unicode_from_string)

def lt__Unicode_Unicode(space, w_left, w_right):
    left = w_left._value
    right = w_right._value
    return space.newbool(left < right)

def ord__Unicode(space, w_uni):
    if len(w_uni._value) != 1:
        raise operationerrfmt(space.w_TypeError,
            "ord() expected a character, got a unicode of length %d",
            len(w_uni._value))
    return space.wrap(ord(w_uni._value[0]))

def getnewargs__Unicode(space, w_uni):
    return space.newtuple([W_UnicodeObject(w_uni._value)])

def add__Unicode_Unicode(space, w_left, w_right):
    return W_UnicodeObject(w_left._value + w_right._value)

def add__String_Unicode(space, w_left, w_right):
    # this function is needed to make 'abc'.__add__(u'def') return
    # u'abcdef' instead of NotImplemented.  This is what occurs on
    # top of CPython.
    from pypy.objspace.std.unicodetype import unicode_from_string
    # XXX fragile implementation detail: for "string + unicode subclass",
    # if the unicode subclass overrides __radd__(), then it will be
    # called (see test_str_unicode_concat_overrides).  This occurs as a
    # result of the following call to space.add() in which the first
    # argument is a unicode and the second argument a subclass of unicode
    # (and thus the usual logic about calling __radd__() first applies).
    return space.add(unicode_from_string(space, w_left) , w_right)

def add__Unicode_String(space, w_left, w_right):
    # this function is needed to make 'abc'.__radd__(u'def') return
    # u'defabc', although it's completely unclear if that's necessary
    # given that CPython doesn't even have a method str.__radd__().
    from pypy.objspace.std.unicodetype import unicode_from_string
    return space.add(w_left, unicode_from_string(space, w_right))
    # Note about "unicode + string subclass": look for
    # "cpython bug compatibility" in descroperation.py

def contains__String_Unicode(space, w_container, w_item):
    from pypy.objspace.std.unicodetype import unicode_from_string
    return space.contains(unicode_from_string(space, w_container), w_item )


def contains__Unicode_Unicode(space, w_container, w_item):
    item = w_item._value
    container = w_container._value
    return space.newbool(container.find(item) != -1)

def unicode_join__Unicode_ANY(space, w_self, w_list):
    l = space.listview_unicode(w_list)
    if l is not None:
        if len(l) == 1:
            return space.wrap(l[0])
        return space.wrap(w_self._value.join(l))
    list_w = space.listview(w_list)
    size = len(list_w)

    if size == 0:
        return W_UnicodeObject.EMPTY

    if size == 1:
        w_s = list_w[0]
        if space.is_w(space.type(w_s), space.w_unicode):
            return w_s

    return _unicode_join_many_items(space, w_self, list_w, size)

@jit.look_inside_iff(lambda space, w_self, list_w, size:
                     jit.loop_unrolling_heuristic(list_w, size))
def _unicode_join_many_items(space, w_self, list_w, size):
    self = w_self._value
    prealloc_size = len(self) * (size - 1)
    for i in range(size):
        try:
            prealloc_size += len(space.unicode_w(list_w[i]))
        except OperationError, e:
            if not e.match(space, space.w_TypeError):
                raise
            raise operationerrfmt(space.w_TypeError,
                        "sequence item %d: expected string or Unicode", i)
    sb = UnicodeBuilder(prealloc_size)
    for i in range(size):
        if self and i != 0:
            sb.append(self)
        w_s = list_w[i]
        sb.append(space.unicode_w(w_s))
    return space.wrap(sb.build())

def hash__Unicode(space, w_uni):
    x = compute_hash(w_uni._value)
    return space.wrap(x)

def len__Unicode(space, w_uni):
    return space.wrap(len(w_uni._value))

def getitem__Unicode_ANY(space, w_uni, w_index):
    ival = space.getindex_w(w_index, space.w_IndexError, "string index")
    uni = w_uni._value
    ulen = len(uni)
    if ival < 0:
        ival += ulen
    if ival < 0 or ival >= ulen:
        raise OperationError(space.w_IndexError,
                             space.wrap("unicode index out of range"))
    return W_UnicodeObject(uni[ival])

def getitem__Unicode_Slice(space, w_uni, w_slice):
    uni = w_uni._value
    length = len(uni)
    start, stop, step, sl = w_slice.indices4(space, length)
    if sl == 0:
        r = u""
    elif step == 1:
        assert start >= 0 and stop >= 0
        r = uni[start:stop]
    else:
        r = u"".join([uni[start + i*step] for i in range(sl)])
    return W_UnicodeObject(r)

def getslice__Unicode_ANY_ANY(space, w_uni, w_start, w_stop):
    uni = w_uni._value
    start, stop = normalize_simple_slice(space, len(uni), w_start, w_stop)
    return W_UnicodeObject(uni[start:stop])

def mul__Unicode_ANY(space, w_uni, w_times):
    try:
        times = space.getindex_w(w_times, space.w_OverflowError)
    except OperationError, e:
        if e.match(space, space.w_TypeError):
            raise FailedToImplement
        raise
    if times <= 0:
        return W_UnicodeObject.EMPTY
    input = w_uni._value
    if len(input) == 1:
        result = input[0] * times
    else:
        result = input * times
    return W_UnicodeObject(result)

def mul__ANY_Unicode(space, w_times, w_uni):
    return mul__Unicode_ANY(space, w_uni, w_times)

def _isspace(uchar):
    return unicodedb.isspace(ord(uchar))

def make_generic(funcname):
    def func(space, w_self):
        v = w_self._value
        if len(v) == 0:
            return space.w_False
        for idx in range(len(v)):
            if not getattr(unicodedb, funcname)(ord(v[idx])):
                return space.w_False
        return space.w_True
    return func_with_new_name(func, "unicode_%s__Unicode" % (funcname, ))

unicode_isspace__Unicode = make_generic("isspace")
unicode_isalpha__Unicode = make_generic("isalpha")
unicode_isalnum__Unicode = make_generic("isalnum")
unicode_isdecimal__Unicode = make_generic("isdecimal")
unicode_isdigit__Unicode = make_generic("isdigit")
unicode_isnumeric__Unicode = make_generic("isnumeric")

def unicode_islower__Unicode(space, w_unicode):
    cased = False
    for uchar in w_unicode._value:
        if (unicodedb.isupper(ord(uchar)) or
            unicodedb.istitle(ord(uchar))):
            return space.w_False
        if not cased and unicodedb.islower(ord(uchar)):
            cased = True
    return space.newbool(cased)

def unicode_isupper__Unicode(space, w_unicode):
    cased = False
    for uchar in w_unicode._value:
        if (unicodedb.islower(ord(uchar)) or
            unicodedb.istitle(ord(uchar))):
            return space.w_False
        if not cased and unicodedb.isupper(ord(uchar)):
            cased = True
    return space.newbool(cased)

def unicode_istitle__Unicode(space, w_unicode):
    cased = False
    previous_is_cased = False
    for uchar in w_unicode._value:
        if (unicodedb.isupper(ord(uchar)) or
            unicodedb.istitle(ord(uchar))):
            if previous_is_cased:
                return space.w_False
            previous_is_cased = cased = True
        elif unicodedb.islower(ord(uchar)):
            if not previous_is_cased:
                return space.w_False
            previous_is_cased = cased = True
        else:
            previous_is_cased = False
    return space.newbool(cased)

def _strip(space, w_self, w_chars, left, right):
    "internal function called by str_xstrip methods"
    u_self = w_self._value
    u_chars = w_chars._value

    lpos = 0
    rpos = len(u_self)

    if left:
        while lpos < rpos and u_self[lpos] in u_chars:
           lpos += 1

    if right:
        while rpos > lpos and u_self[rpos - 1] in u_chars:
           rpos -= 1

    assert rpos >= 0
    result = u_self[lpos: rpos]
    return W_UnicodeObject(result)

def _strip_none(space, w_self, left, right):
    "internal function called by str_xstrip methods"
    u_self = w_self._value

    lpos = 0
    rpos = len(u_self)

    if left:
        while lpos < rpos and _isspace(u_self[lpos]):
           lpos += 1

    if right:
        while rpos > lpos and _isspace(u_self[rpos - 1]):
           rpos -= 1

    assert rpos >= 0
    result = u_self[lpos: rpos]
    return W_UnicodeObject(result)

def unicode_strip__Unicode_None(space, w_self, w_chars):
    return _strip_none(space, w_self, 1, 1)
def unicode_strip__Unicode_Unicode(space, w_self, w_chars):
    return _strip(space, w_self, w_chars, 1, 1)
def unicode_strip__Unicode_String(space, w_self, w_chars):
    from pypy.objspace.std.unicodetype import unicode_from_string
    return space.call_method(w_self, 'strip',
                             unicode_from_string(space, w_chars))

def unicode_lstrip__Unicode_None(space, w_self, w_chars):
    return _strip_none(space, w_self, 1, 0)
def unicode_lstrip__Unicode_Unicode(space, w_self, w_chars):
    return _strip(space, w_self, w_chars, 1, 0)
def unicode_lstrip__Unicode_String(space, w_self, w_chars):
    from pypy.objspace.std.unicodetype import unicode_from_string
    return space.call_method(w_self, 'lstrip',
                             unicode_from_string(space, w_chars))


def unicode_rstrip__Unicode_None(space, w_self, w_chars):
    return _strip_none(space, w_self, 0, 1)
def unicode_rstrip__Unicode_Unicode(space, w_self, w_chars):
    return _strip(space, w_self, w_chars, 0, 1)
def unicode_rstrip__Unicode_String(space, w_self, w_chars):
    from pypy.objspace.std.unicodetype import unicode_from_string
    return space.call_method(w_self, 'rstrip',
                             unicode_from_string(space, w_chars))


def unicode_capitalize__Unicode(space, w_self):
    input = w_self._value
    if len(input) == 0:
        return W_UnicodeObject.EMPTY
    builder = UnicodeBuilder(len(input))
    builder.append(unichr(unicodedb.toupper(ord(input[0]))))
    for i in range(1, len(input)):
        builder.append(unichr(unicodedb.tolower(ord(input[i]))))
    return W_UnicodeObject(builder.build())

def unicode_title__Unicode(space, w_self):
    input = w_self._value
    if len(input) == 0:
        return w_self
    builder = UnicodeBuilder(len(input))

    previous_is_cased = False
    for i in range(len(input)):
        unichar = ord(input[i])
        if previous_is_cased:
            builder.append(unichr(unicodedb.tolower(unichar)))
        else:
            builder.append(unichr(unicodedb.totitle(unichar)))
        previous_is_cased = unicodedb.iscased(unichar)
    return W_UnicodeObject(builder.build())

def unicode_lower__Unicode(space, w_self):
    input = w_self._value
    builder = UnicodeBuilder(len(input))
    for i in range(len(input)):
        builder.append(unichr(unicodedb.tolower(ord(input[i]))))
    return W_UnicodeObject(builder.build())

def unicode_upper__Unicode(space, w_self):
    input = w_self._value
    builder = UnicodeBuilder(len(input))
    for i in range(len(input)):
        builder.append(unichr(unicodedb.toupper(ord(input[i]))))
    return W_UnicodeObject(builder.build())

def unicode_swapcase__Unicode(space, w_self):
    input = w_self._value
    builder = UnicodeBuilder(len(input))
    for i in range(len(input)):
        unichar = ord(input[i])
        if unicodedb.islower(unichar):
            builder.append(unichr(unicodedb.toupper(unichar)))
        elif unicodedb.isupper(unichar):
            builder.append(unichr(unicodedb.tolower(unichar)))
        else:
            builder.append(input[i])
    return W_UnicodeObject(builder.build())

def _normalize_index(length, index):
    if index < 0:
        index += length
        if index < 0:
            index = 0
    elif index > length:
        index = length
    return index

@specialize.arg(4)
def _convert_idx_params(space, w_self, w_start, w_end, upper_bound=False):
    self = w_self._value
    start, end = slicetype.unwrap_start_stop(
            space, len(self), w_start, w_end, upper_bound)
    return (self, start, end)

def unicode_endswith__Unicode_Unicode_ANY_ANY(space, w_self, w_substr, w_start, w_end):
    self, start, end = _convert_idx_params(space, w_self,
                                                   w_start, w_end, True)
    return space.newbool(stringendswith(self, w_substr._value, start, end))

def unicode_startswith__Unicode_Unicode_ANY_ANY(space, w_self, w_substr, w_start, w_end):
    self, start, end = _convert_idx_params(space, w_self, w_start, w_end, True)
    # XXX this stuff can be waaay better for ootypebased backends if
    #     we re-use more of our rpython machinery (ie implement startswith
    #     with additional parameters as rpython)
    return space.newbool(stringstartswith(self, w_substr._value, start, end))

def unicode_startswith__Unicode_Tuple_ANY_ANY(space, w_unistr, w_prefixes,
                                              w_start, w_end):
    unistr, start, end = _convert_idx_params(space, w_unistr,
                                             w_start, w_end, True)
    for w_prefix in space.fixedview(w_prefixes):
        prefix = space.unicode_w(w_prefix)
        if stringstartswith(unistr, prefix, start, end):
            return space.w_True
    return space.w_False

def unicode_endswith__Unicode_Tuple_ANY_ANY(space, w_unistr, w_suffixes,
                                            w_start, w_end):
    unistr, start, end = _convert_idx_params(space, w_unistr,
                                             w_start, w_end, True)
    for w_suffix in space.fixedview(w_suffixes):
        suffix = space.unicode_w(w_suffix)
        if stringendswith(unistr, suffix, start, end):
            return space.w_True
    return space.w_False

def _to_unichar_w(space, w_char):
    try:
        unistr = space.unicode_w(w_char)
    except OperationError, e:
        if e.match(space, space.w_TypeError):
            msg = 'The fill character cannot be converted to Unicode'
            raise OperationError(space.w_TypeError, space.wrap(msg))
        else:
            raise

    if len(unistr) != 1:
        raise OperationError(space.w_TypeError, space.wrap('The fill character must be exactly one character long'))
    return unistr[0]

def unicode_center__Unicode_ANY_ANY(space, w_self, w_width, w_fillchar):
    self = w_self._value
    width = space.int_w(w_width)
    fillchar = _to_unichar_w(space, w_fillchar)
    padding = width - len(self)
    if padding < 0:
        return w_self.create_if_subclassed()
    leftpad = padding // 2 + (padding & width & 1)
    result = [fillchar] * width
    for i in range(len(self)):
        result[leftpad + i] = self[i]
    return W_UnicodeObject(u''.join(result))

def unicode_ljust__Unicode_ANY_ANY(space, w_self, w_width, w_fillchar):
    self = w_self._value
    width = space.int_w(w_width)
    fillchar = _to_unichar_w(space, w_fillchar)
    padding = width - len(self)
    if padding < 0:
        return w_self.create_if_subclassed()
    result = [fillchar] * width
    for i in range(len(self)):
        result[i] = self[i]
    return W_UnicodeObject(u''.join(result))

def unicode_rjust__Unicode_ANY_ANY(space, w_self, w_width, w_fillchar):
    self = w_self._value
    width = space.int_w(w_width)
    fillchar = _to_unichar_w(space, w_fillchar)
    padding = width - len(self)
    if padding < 0:
        return w_self.create_if_subclassed()
    result = [fillchar] * width
    for i in range(len(self)):
        result[padding + i] = self[i]
    return W_UnicodeObject(u''.join(result))

def unicode_zfill__Unicode_ANY(space, w_self, w_width):
    self = w_self._value
    width = space.int_w(w_width)
    if len(self) == 0:
        return W_UnicodeObject(u'0' * width)
    padding = width - len(self)
    if padding <= 0:
        return w_self.create_if_subclassed()
    result = [u'0'] * width
    for i in range(len(self)):
        result[padding + i] = self[i]
    # Move sign to first position
    if self[0] in (u'+', u'-'):
        result[0] = self[0]
        result[padding] = u'0'
    return W_UnicodeObject(u''.join(result))

def unicode_splitlines__Unicode_ANY(space, w_self, w_keepends):
    self = w_self._value
    keepends = 0
    if space.int_w(w_keepends):
        keepends = 1
    if len(self) == 0:
        return space.newlist([])

    start = 0
    end = len(self)
    pos = 0
    lines = []
    while pos < end:
        if unicodedb.islinebreak(ord(self[pos])):
            if (self[pos] == u'\r' and pos + 1 < end and
                self[pos + 1] == u'\n'):
                # Count CRLF as one linebreak
                lines.append(W_UnicodeObject(self[start:pos + keepends * 2]))
                pos += 1
            else:
                lines.append(W_UnicodeObject(self[start:pos + keepends]))
            pos += 1
            start = pos
        else:
            pos += 1
    if not unicodedb.islinebreak(ord(self[end - 1])):
        lines.append(W_UnicodeObject(self[start:]))
    return space.newlist(lines)

def unicode_find__Unicode_Unicode_ANY_ANY(space, w_self, w_substr, w_start, w_end):
    self, start, end = _convert_idx_params(space, w_self, w_start, w_end)
    return space.wrap(self.find(w_substr._value, start, end))

def unicode_rfind__Unicode_Unicode_ANY_ANY(space, w_self, w_substr, w_start, w_end):
    self, start, end = _convert_idx_params(space, w_self, w_start, w_end)
    return space.wrap(self.rfind(w_substr._value, start, end))

def unicode_index__Unicode_Unicode_ANY_ANY(space, w_self, w_substr, w_start, w_end):
    self, start, end = _convert_idx_params(space, w_self, w_start, w_end)
    index = self.find(w_substr._value, start, end)
    if index < 0:
        raise OperationError(space.w_ValueError,
                             space.wrap('substring not found'))
    return space.wrap(index)

def unicode_rindex__Unicode_Unicode_ANY_ANY(space, w_self, w_substr, w_start, w_end):
    self, start, end = _convert_idx_params(space, w_self, w_start, w_end)
    index = self.rfind(w_substr._value, start, end)
    if index < 0:
        raise OperationError(space.w_ValueError,
                             space.wrap('substring not found'))
    return space.wrap(index)

def unicode_count__Unicode_Unicode_ANY_ANY(space, w_self, w_substr, w_start, w_end):
    self, start, end = _convert_idx_params(space, w_self, w_start, w_end)
    return space.wrap(self.count(w_substr._value, start, end))

def unicode_split__Unicode_None_ANY(space, w_self, w_none, w_maxsplit):
    maxsplit = space.int_w(w_maxsplit)
    res_w = []
    value = w_self._value
    length = len(value)
    i = 0
    while True:
        # find the beginning of the next word
        while i < length:
            if not _isspace(value[i]):
                break   # found
            i += 1
        else:
            break  # end of string, finished

        # find the end of the word
        if maxsplit == 0:
            j = length   # take all the rest of the string
        else:
            j = i + 1
            while j < length and not _isspace(value[j]):
                j += 1
            maxsplit -= 1   # NB. if it's already < 0, it stays < 0

        # the word is value[i:j]
        res_w.append(W_UnicodeObject(value[i:j]))

        # continue to look from the character following the space after the word
        i = j + 1

    return space.newlist(res_w)

def unicode_split__Unicode_Unicode_ANY(space, w_self, w_delim, w_maxsplit):
    self = w_self._value
    delim = w_delim._value
    maxsplit = space.int_w(w_maxsplit)
    delim_len = len(delim)
    if delim_len == 0:
        raise OperationError(space.w_ValueError,
                             space.wrap('empty separator'))
    parts = _split_with(self, delim, maxsplit)
    return space.newlist([W_UnicodeObject(part) for part in parts])


def unicode_rsplit__Unicode_None_ANY(space, w_self, w_none, w_maxsplit):
    maxsplit = space.int_w(w_maxsplit)
    res_w = []
    value = w_self._value
    i = len(value)-1
    while True:
        # starting from the end, find the end of the next word
        while i >= 0:
            if not _isspace(value[i]):
                break   # found
            i -= 1
        else:
            break  # end of string, finished

        # find the start of the word
        # (more precisely, 'j' will be the space character before the word)
        if maxsplit == 0:
            j = -1   # take all the rest of the string
        else:
            j = i - 1
            while j >= 0 and not _isspace(value[j]):
                j -= 1
            maxsplit -= 1   # NB. if it's already < 0, it stays < 0

        # the word is value[j+1:i+1]
        j1 = j + 1
        assert j1 >= 0
        res_w.append(W_UnicodeObject(value[j1:i+1]))

        # continue to look from the character before the space before the word
        i = j - 1

    res_w.reverse()
    return space.newlist(res_w)

def sliced(space, s, start, stop, orig_obj):
    assert start >= 0
    assert stop >= 0
    if start == 0 and stop == len(s) and space.is_w(space.type(orig_obj), space.w_unicode):
        return orig_obj
    return space.wrap( s[start:stop])

unicode_rsplit__Unicode_Unicode_ANY = make_rsplit_with_delim('unicode_rsplit__Unicode_Unicode_ANY',
                                                             sliced)

def _split_into_chars(self, maxsplit):
    if maxsplit == 0:
        return [self]
    index = 0
    end = len(self)
    parts = [u'']
    maxsplit -= 1
    while maxsplit != 0:
        if index >= end:
            break
        parts.append(self[index])
        index += 1
        maxsplit -= 1
    parts.append(self[index:])
    return parts

def _split_with(self, with_, maxsplit=-1):
    parts = []
    start = 0
    end = len(self)
    length = len(with_)
    while maxsplit != 0:
        index = self.find(with_, start, end)
        if index < 0:
            break
        parts.append(self[start:index])
        start = index + length
        maxsplit -= 1
    parts.append(self[start:])
    return parts

def unicode_replace__Unicode_Unicode_Unicode_ANY(space, w_self, w_old,
                                                 w_new, w_maxsplit):
    return _unicode_replace(space, w_self, w_old._value, w_new._value,
                            w_maxsplit)

def unicode_replace__Unicode_ANY_ANY_ANY(space, w_self, w_old, w_new,
                                         w_maxsplit):
    if not space.isinstance_w(w_old, space.w_unicode):
        old = unicode(space.bufferstr_w(w_old))
    else:
        old = space.unicode_w(w_old)
    if not space.isinstance_w(w_new, space.w_unicode):
        new = unicode(space.bufferstr_w(w_new))
    else:
        new = space.unicode_w(w_new)
    return _unicode_replace(space, w_self, old, new, w_maxsplit)

def _unicode_replace(space, w_self, old, new, w_maxsplit):
    if len(old):
        parts = _split_with(w_self._value, old, space.int_w(w_maxsplit))
    else:
        self = w_self._value
        maxsplit = space.int_w(w_maxsplit)
        parts = _split_into_chars(self, maxsplit)

    try:
        one = ovfcheck(len(parts) * len(new))
        ovfcheck(one + len(w_self._value))
    except OverflowError:
        raise OperationError(
            space.w_OverflowError,
            space.wrap("replace string is too long"))

    return W_UnicodeObject(new.join(parts))


def unicode_encode__Unicode_ANY_ANY(space, w_unistr,
                                    w_encoding=None,
                                    w_errors=None):

    from pypy.objspace.std.unicodetype import _get_encoding_and_errors
    from pypy.objspace.std.unicodetype import encode_object
    encoding, errors = _get_encoding_and_errors(space, w_encoding, w_errors)
    w_retval = encode_object(space, w_unistr, encoding, errors)
    return w_retval

def unicode_partition__Unicode_Unicode(space, w_unistr, w_unisub):
    unistr = w_unistr._value
    unisub = w_unisub._value
    if not unisub:
        raise OperationError(space.w_ValueError,
                             space.wrap("empty separator"))
    pos = unistr.find(unisub)
    if pos == -1:
        return space.newtuple([w_unistr, W_UnicodeObject.EMPTY,
                               W_UnicodeObject.EMPTY])
    else:
        assert pos >= 0
        return space.newtuple([space.wrap(unistr[:pos]), w_unisub,
                               space.wrap(unistr[pos+len(unisub):])])

def unicode_rpartition__Unicode_Unicode(space, w_unistr, w_unisub):
    unistr = w_unistr._value
    unisub = w_unisub._value
    if not unisub:
        raise OperationError(space.w_ValueError,
                             space.wrap("empty separator"))
    pos = unistr.rfind(unisub)
    if pos == -1:
        return space.newtuple([W_UnicodeObject.EMPTY,
                               W_UnicodeObject.EMPTY, w_unistr])
    else:
        assert pos >= 0
        return space.newtuple([space.wrap(unistr[:pos]), w_unisub,
                               space.wrap(unistr[pos+len(unisub):])])


def unicode_expandtabs__Unicode_ANY(space, w_self, w_tabsize):
    self = w_self._value
    tabsize  = space.int_w(w_tabsize)
    parts = _split_with(self, u'\t')
    result = [parts[0]]
    prevsize = 0
    for ch in parts[0]:
        prevsize += 1
        if ch == u"\n" or ch ==  u"\r":
            prevsize = 0
    totalsize = prevsize

    for i in range(1, len(parts)):
        pad = tabsize - prevsize % tabsize
        nextpart = parts[i]
        try:
            totalsize = ovfcheck(totalsize + pad)
            totalsize = ovfcheck(totalsize + len(nextpart))
            result.append(u' ' * pad)
        except OverflowError:
            raise OperationError(space.w_OverflowError, space.wrap('new string is too long'))
        result.append(nextpart)
        prevsize = 0
        for ch in nextpart:
            prevsize += 1
            if ch in (u"\n", u"\r"):
                prevsize = 0
    return space.wrap(u''.join(result))


def unicode_translate__Unicode_ANY(space, w_self, w_table):
    self = w_self._value
    w_sys = space.getbuiltinmodule('sys')
    maxunicode = space.int_w(space.getattr(w_sys, space.wrap("maxunicode")))
    result = []
    for unichar in self:
        try:
            w_newval = space.getitem(w_table, space.wrap(ord(unichar)))
        except OperationError, e:
            if e.match(space, space.w_LookupError):
                result.append(unichar)
            else:
                raise
        else:
            if space.is_w(w_newval, space.w_None):
                continue
            elif space.isinstance_w(w_newval, space.w_int):
                newval = space.int_w(w_newval)
                if newval < 0 or newval > maxunicode:
                    raise OperationError(
                            space.w_TypeError,
                            space.wrap("character mapping must be in range(0x%x)" % (maxunicode + 1,)))
                result.append(unichr(newval))
            elif space.isinstance_w(w_newval, space.w_unicode):
                result.append(space.unicode_w(w_newval))
            else:
                raise OperationError(
                    space.w_TypeError,
                    space.wrap("character mapping must return integer, None or unicode"))
    return W_UnicodeObject(u''.join(result))

_repr_function, _ = make_unicode_escape_function(
    pass_printable=False, unicode_output=False, quotes=True, prefix='u')

def repr__Unicode(space, w_unicode):
    chars = w_unicode._value
    size = len(chars)
    s = _repr_function(chars, size, "strict")
    return space.wrap(s)

def mod__Unicode_ANY(space, w_format, w_values):
    return mod_format(space, w_format, w_values, do_unicode=True)

def unicode_format__Unicode(space, w_unicode, __args__):
    return newformat.format_method(space, w_unicode, __args__, True)

def format__Unicode_ANY(space, w_unicode, w_format_spec):
    if not space.isinstance_w(w_format_spec, space.w_unicode):
        w_format_spec = space.call_function(space.w_unicode, w_format_spec)
    from pypy.objspace.std.unicodetype import unicode_from_object
    w_unicode = unicode_from_object(space, w_unicode)
    spec = space.unicode_w(w_format_spec)
    formatter = newformat.unicode_formatter(space, spec)
    return formatter.format_string(space.unicode_w(w_unicode))


from pypy.objspace.std import unicodetype
register_all(vars(), unicodetype)

# str.strip(unicode) needs to convert self to unicode and call unicode.strip we
# use the following magic to register strip_string_unicode as a String
# multimethod.

# XXX couldn't string and unicode _share_ the multimethods that make up their
# methods?

class str_methods:
    from pypy.objspace.std import stringtype
    W_UnicodeObject = W_UnicodeObject
    from pypy.objspace.std.stringobject import W_StringObject
    def str_strip__String_Unicode(space, w_self, w_chars):
        from pypy.objspace.std.unicodetype import unicode_from_string
        return space.call_method(unicode_from_string(space, w_self),
                                 'strip', w_chars)
    def str_lstrip__String_Unicode(space, w_self, w_chars):
        from pypy.objspace.std.unicodetype import unicode_from_string
        return space.call_method(unicode_from_string(space, w_self),
                                 'lstrip', w_chars)
    def str_rstrip__String_Unicode(space, w_self, w_chars):
        from pypy.objspace.std.unicodetype import unicode_from_string
        return space.call_method(unicode_from_string(space, w_self),
                                 'rstrip', w_chars)
    def str_count__String_Unicode_ANY_ANY(space, w_self, w_substr, w_start, w_end):
        from pypy.objspace.std.unicodetype import unicode_from_string
        return space.call_method(unicode_from_string(space, w_self),
                                 'count', w_substr, w_start, w_end)
    def str_find__String_Unicode_ANY_ANY(space, w_self, w_substr, w_start, w_end):
        from pypy.objspace.std.unicodetype import unicode_from_string
        return space.call_method(unicode_from_string(space, w_self),
                                 'find', w_substr, w_start, w_end)
    def str_rfind__String_Unicode_ANY_ANY(space, w_self, w_substr, w_start, w_end):
        from pypy.objspace.std.unicodetype import unicode_from_string
        return space.call_method(unicode_from_string(space, w_self),
                                 'rfind', w_substr, w_start, w_end)
    def str_index__String_Unicode_ANY_ANY(space, w_self, w_substr, w_start, w_end):
        from pypy.objspace.std.unicodetype import unicode_from_string
        return space.call_method(unicode_from_string(space, w_self),
                                 'index', w_substr, w_start, w_end)
    def str_rindex__String_Unicode_ANY_ANY(space, w_self, w_substr, w_start, w_end):
        from pypy.objspace.std.unicodetype import unicode_from_string
        return space.call_method(unicode_from_string(space, w_self),
                                 'rindex', w_substr, w_start, w_end)
    def str_replace__String_Unicode_Unicode_ANY(space, w_self, w_old, w_new, w_maxsplit):
        from pypy.objspace.std.unicodetype import unicode_from_string
        return space.call_method(unicode_from_string(space, w_self),
                                 'replace', w_old, w_new, w_maxsplit)
    def str_split__String_Unicode_ANY(space, w_self, w_delim, w_maxsplit):
        from pypy.objspace.std.unicodetype import unicode_from_string
        return space.call_method(unicode_from_string(space, w_self),
                                 'split', w_delim, w_maxsplit)
    def str_rsplit__String_Unicode_ANY(space, w_self, w_delim, w_maxsplit):
        from pypy.objspace.std.unicodetype import unicode_from_string
        return space.call_method(unicode_from_string(space, w_self),
                                 'rsplit', w_delim, w_maxsplit)
    register_all(vars(), stringtype)