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import sys
from rpython.annotator import model as annmodel
from rpython.rtyper.lltypesystem import lltype, rffi
_WIN32 = sys.platform.startswith('win')
UNDERSCORE_ON_WIN32 = '_' if _WIN32 else ''
# utility conversion functions
class LLSupport:
_mixin_ = True
def to_rstr(s):
from rpython.rtyper.lltypesystem.rstr import STR, mallocstr
if s is None:
return lltype.nullptr(STR)
p = mallocstr(len(s))
for i in range(len(s)):
p.chars[i] = s[i]
return p
to_rstr = staticmethod(to_rstr)
def to_runicode(s):
from rpython.rtyper.lltypesystem.rstr import UNICODE, mallocunicode
if s is None:
return lltype.nullptr(UNICODE)
p = mallocunicode(len(s))
for i in range(len(s)):
p.chars[i] = s[i]
return p
to_runicode = staticmethod(to_runicode)
def from_rstr(rs):
if not rs: # null pointer
return None
else:
return ''.join([rs.chars[i] for i in range(len(rs.chars))])
from_rstr = staticmethod(from_rstr)
def from_rstr_nonnull(rs):
assert rs
return ''.join([rs.chars[i] for i in range(len(rs.chars))])
from_rstr_nonnull = staticmethod(from_rstr_nonnull)
class StringTraits:
str = str
str0 = annmodel.s_Str0
CHAR = rffi.CHAR
CCHARP = rffi.CCHARP
charp2str = staticmethod(rffi.charp2str)
scoped_str2charp = staticmethod(rffi.scoped_str2charp)
str2charp = staticmethod(rffi.str2charp)
free_charp = staticmethod(rffi.free_charp)
scoped_alloc_buffer = staticmethod(rffi.scoped_alloc_buffer)
@staticmethod
def posix_function_name(name):
return UNDERSCORE_ON_WIN32 + name
@staticmethod
def ll_os_name(name):
return 'll_os.ll_os_' + name
class UnicodeTraits:
str = unicode
str0 = annmodel.s_Unicode0
CHAR = rffi.WCHAR_T
CCHARP = rffi.CWCHARP
charp2str = staticmethod(rffi.wcharp2unicode)
str2charp = staticmethod(rffi.unicode2wcharp)
scoped_str2charp = staticmethod(rffi.scoped_unicode2wcharp)
free_charp = staticmethod(rffi.free_wcharp)
scoped_alloc_buffer = staticmethod(rffi.scoped_alloc_unicodebuffer)
@staticmethod
def posix_function_name(name):
return UNDERSCORE_ON_WIN32 + 'w' + name
@staticmethod
def ll_os_name(name):
return 'll_os.ll_os_w' + name
def ll_strcpy(dst_s, src_s, n):
dstchars = dst_s.chars
srcchars = src_s.chars
i = 0
while i < n:
dstchars[i] = srcchars[i]
i += 1
def _ll_strfill(dst_s, srcchars, n):
dstchars = dst_s.chars
i = 0
while i < n:
dstchars[i] = srcchars[i]
i += 1
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