cppjit/python/cppjit/_typemap.py at main · compiler-research/cppjit · GitHub

History

139 lines (110 loc) · 4.13 KB

Raw

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

"""Externally provided types: get looked up if all else fails, e.g.

for typedef-ed C++ builtin types.

"""

import ctypes

import sys

import types

def _create_mapper(cls, extra_dct=None):

def mapper(name, scope):

if scope:

cppname = scope + "::" + name

modname = "cppjit.gbl." + scope

else:

cppname = name

modname = "cppjit.gbl"

dct = {"__cpp_name__": cppname, "__module__": modname}

if extra_dct:

dct.update(extra_dct)

return type(name, (cls,), dct)

return mapper

# from six.py ---

# Permission is hereby granted, free of charge, to any person obtaining a copy

# of this software and associated documentation files (the "Software"), to deal

# in the Software without restriction, including without limitation the rights

# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell

# copies of the Software, and to permit persons to whom the Software is

# furnished to do so, subject to the following conditions:

# The above copyright notice and this permission notice shall be included in all

# copies or substantial portions of the Software.

# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE

# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,

# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE

# SOFTWARE.

def with_metaclass(meta, *bases):

"""Create a base class with a metaclass."""

# This requires a bit of explanation: the basic idea is to make a dummy

# metaclass for one level of class instantiation that replaces itself with

# the actual metaclass.

class metaclass(type):

def __new__(cls, name, this_bases, d):

if sys.version_info[:2] >= (3, 7):

# This version introduced PEP 560 that requires a bit

# of extra care (we mimic what is done by __build_class__).

resolved_bases = types.resolve_bases(bases)

if resolved_bases is not bases:

d["__orig_bases__"] = bases

else:

resolved_bases = bases

return meta(name, resolved_bases, d)

@classmethod

def __prepare__(cls, name, this_bases):

return meta.__prepare__(name, bases)

return type.__new__(metaclass, "temporary_class", (), {})

# --- end from six.py

class _BoolMeta(type):

def __call__(self, val=bool()):

if val:

return True

else:

return False

class _Bool(with_metaclass(_BoolMeta, object)):

pass

def initialize(backend):

if not hasattr(backend, "type_map"):

return

tm = backend.type_map

# boolean type (builtin type bool can nog be subclassed)

tm["bool"] = _create_mapper(_Bool)

# char types

str_tm = _create_mapper(str)

for tp in ["char", "unsigned char", "signed char"]:

tm[tp] = str_tm

if sys.hexversion < 0x3000000:

tm["wchar_t"] = _create_mapper(unicode) # noqa: F821

else:

tm["wchar_t"] = str_tm

# integer types

int_tm = _create_mapper(int)

for tp in ["int8_t", "uint8_t", "short", "unsigned short", "int"]:

tm[tp] = int_tm

if sys.hexversion < 0x3000000:

long_tm = _create_mapper(long) # noqa: F821

else:

long_tm = tm["int"]

for tp in [

"unsigned int",

"long",

"unsigned long",

"long long",

"unsigned long long",

tm[tp] = long_tm

# floating point types

float_tm = _create_mapper(float)

for tp in ["float", "double", "long double"]:

tm[tp] = float_tm

# void*

def voidp_init(self, arg=0):

import ctypes

import cppjit

if arg == cppjit.nullptr:

arg = 0

ctypes.c_void_p.__init__(self, arg)

tm["void *"] = _create_mapper(ctypes.c_void_p, {"__init__": voidp_init})

cppjit/python/cppjit/_typemap.py at main · compiler-research/cppjit · GitHub

Uh oh!

Expand file tree

Breadcrumbs

_typemap.py

Latest commit

History

Breadcrumbs

_typemap.py

File metadata and controls