def cython_py2c_conv_function_pointer(t, ts):
t = t[1]
argnames = []
argcts = []
argdecls = []
argbodys = []
argrtns = []
for n, argt in t[1][2]:
argnames.append(n)
decl, body, rtn, _ = ts.cython_c2py(n, argt, proxy_name="c_" + n,
cached=False)
argdecls.append(decl)
#argdecls.append("cdef {0} {1}".format(cython_pytype(argt), "c_" + n))
argbodys.append(body)
argrtns.append(rtn)
argct = ts.cython_ctype(argt)
argcts.append(argct)
rtnname = 'rtn'
rtnprox = 'c_' + rtnname
rtncall = 'call_' + rtnname
while rtnname in argnames or rtnprox in argnames:
rtnname += '_'
rtnprox += '_'
rtnct = ts.cython_ctype(t[2][2])
argdecls = indent(argdecls)
argbodys = indent(argbodys)
#rtndecl, rtnbody, rtnrtn = cython_py2c(rtnname, t[2][2], proxy_name=rtnprox)
#rtndecl, rtnbody, rtnrtn = cython_py2c(rtnname, t[2][2], proxy_name=rtncall)
rtndecl, rtnbody, rtnrtn = ts.cython_py2c(rtncall, t[2][2],
proxy_name=rtnprox)
if rtndecl is None and rtnbody is None:
rtnprox = rtnname
rtndecl = indent([rtndecl])
rtnbody = indent([rtnbody])
returns_void = (t[2][2] == 'void')
if returns_void:
rtnrtn = ''
s = ('cdef {rtnct} {{proxy_name}}({arglist}):\n'
'{argdecls}\n'
'{rtndecl}\n'
' global {{var}}\n'
'{argbodys}\n')
s += ' {{var}}({pyarglist})\n' if returns_void else \
' {rtncall} = {{var}}({pyarglist})\n'
s += ('{rtnbody}\n'
' return {rtnrtn}\n')
arglist = ", ".join(["{0} {1}".format(*x) for x in zip(argcts, argnames)])
pyarglist=", ".join(argrtns)
s = s.format(rtnct=rtnct, arglist=arglist, argdecls=argdecls,
rtndecl=rtndecl, argbodys=argbodys, rtnprox=rtnprox,
pyarglist=pyarglist, rtnbody=rtnbody, rtnrtn=rtnrtn,
rtncall=rtncall)
return s, False
def cython_c2py_conv_function_pointer(t_, ts):
"""Wrap function pointers in C/C++ to Python functions."""
t = t_[1]
argnames = []
argdecls = []
argbodys = []
argrtns = []
for n, argt in t[1][2]:
argnames.append(n)
decl, body, rtn = ts.cython_py2c(n, argt, proxy_name="c_" + n)
argdecls += decl.split('\n') if isinstance(decl,basestring) else [decl]
argbodys += body.split('\n') if isinstance(body,basestring) else [body]
argrtns += rtn.split('\n') if isinstance(rtn,basestring) else [rtn]
rtnname = 'rtn'
rtnprox = 'c_' + rtnname
rtncall = 'c_call_' + rtnname
while rtnname in argnames or rtnprox in argnames:
rtnname += '_'
rtnprox += '_'
argdecls = indent(argdecls)
argbodys = indent(argbodys)
rtndecl, rtnbody, rtnrtn, _ = ts.cython_c2py(rtncall, t[2][2],
cached=False, proxy_name=rtnprox, existing_name=rtncall)
if rtndecl is None and rtnbody is None:
rtnprox = rtnname
rtndecls = [rtndecl]
returns_void = (t[2][2] == 'void')
if not returns_void:
rtndecls.append("cdef {0} {1}".format(ts.cython_ctype(t[2][2]),
rtncall))
rtndecl = indent(rtndecls)
rtnbody = indent(rtnbody)
s = ('def {{proxy_name}}({arglist}):\n'
'{argdecls}\n'
'{rtndecl}\n'
' if {{var}} == NULL:\n'
' raise RuntimeError("{{var}} is NULL and may not be '
'safely called!")\n'
'{argbodys}\n')
s += ' {{var}}({carglist})\n' if returns_void else \
' {rtncall} = {{var}}({carglist})\n'
s += '{rtnbody}\n'
s = s.format(arglist=", ".join(argnames), argdecls=argdecls,
cvartypeptr=ts.cython_ctype(t_).format(type_name='cvartype'),
argbodys=argbodys, rtndecl=rtndecl, rtnprox=rtnprox,
rtncall=rtncall, carglist=", ".join(argrtns), rtnbody=rtnbody)
caches = 'if {cache_name} is None:\n' + indent(s)
if not returns_void:
caches += "\n return {rtnrtn}".format(rtnrtn=rtnrtn)
caches += '\n {cache_name} = {proxy_name}\n'
return s, s, caches
