def select_function_code_generators(fnobj, db, functionname):
# XXX this logic is completely broken nowadays
# _external_name does not mean that this is done oldstyle
sandbox = db.need_sandboxing(fnobj)
if hasattr(fnobj, '_external_name'):
if sandbox:
return sandbox_stub(fnobj, db)
db.externalfuncs[fnobj._external_name] = fnobj
return []
elif fnobj._callable in extfunc.EXTERNALS:
# -- deprecated case --
# 'fnobj' is one of the ll_xyz() functions with the suggested_primitive
# flag in pypy.rpython.module.*. The corresponding C wrappers are
# written by hand in src/ll_*.h, and declared in extfunc.EXTERNALS.
if sandbox and not fnobj._name.startswith('ll_stack_'): # XXX!!! Temporary
return sandbox_stub(fnobj, db)
db.externalfuncs[fnobj._callable] = fnobj
return []
elif hasattr(fnobj, 'graph'):
if sandbox and sandbox != "if_external":
# apply the sandbox transformation
return sandbox_transform(fnobj, db)
exception_policy = getattr(fnobj, 'exception_policy', None)
return [FunctionCodeGenerator(fnobj.graph, db, exception_policy,
functionname)]
elif getattr(fnobj, 'external', None) is not None:
if sandbox:
return sandbox_stub(fnobj, db)
elif fnobj.external == 'C':
return []
else:
assert fnobj.external == 'CPython'
return [CExternalFunctionCodeGenerator(fnobj, db)]
else:
raise ValueError, "don't know how to generate code for %r" % (fnobj,)
def sandbox_transform(fnobj, db):
# for --sandbox: replace a function like os_open_llimpl() with
# code that communicates with the external process to ask it to
# perform the operation.
from pypy.translator.sandbox import rsandbox
graph = rsandbox.get_external_function_sandbox_graph(fnobj, db)
return [FunctionCodeGenerator(graph, db)]
def sandbox_stub(fnobj, db):
# unexpected external function for --sandbox translation: replace it
# with a "Not Implemented" stub. To support these functions, port them
# to the new style registry (e.g. rpython.module.ll_os.RegisterOs).
from pypy.translator.sandbox import rsandbox
graph = rsandbox.get_external_function_sandbox_graph(fnobj, db,
force_stub=True)
return [FunctionCodeGenerator(graph, db)]