""" Gateway between app-level and interpreter-level: * BuiltinCode (call interp-level code from app-level) * app2interp (embed an app-level function into an interp-level callable) * interp2app (publish an interp-level object to be visible from app-level) * interpindirect2app (publish an interp-level object to be visible from app-level as an indirect call to implementation) """ import sys import os import types import inspect import py from pypy.interpreter.eval import Code from pypy.interpreter.argument import Arguments from pypy.interpreter.signature import Signature from pypy.interpreter.baseobjspace import (W_Root, ObjSpace, SpaceCache, DescrMismatch) from pypy.interpreter.error import OperationError, oefmt from pypy.interpreter.function import ClassMethod, FunctionWithFixedCode from rpython.rlib.objectmodel import we_are_translated, not_rpython from rpython.rlib.rarithmetic import r_longlong, r_int, r_ulonglong, r_uint from rpython.tool.sourcetools import func_with_new_name, compile2 from rpython.rlib.signature import signature, finishsigs from rpython.rlib import types as sigtypes NO_DEFAULT = object() # internal non-translatable parts: class SignatureBuilder(object): "NOT_RPYTHON" def __init__(self, func=None, argnames=None, varargname=None, kwargname=None, name=None): self.func = func if func is not None: self.name = func.__name__ else: self.name = name if argnames is None: argnames = [] self.argnames = argnames self.varargname = varargname self.kwargname = kwargname self.kwonlyargnames = None def append(self, argname): if self.kwonlyargnames is None: self.argnames.append(argname) else: self.kwonlyargnames.append(argname) def marker_kwonly(self): assert self.kwonlyargnames is None self.kwonlyargnames = [] def signature(self): return Signature(self.argnames, self.varargname, self.kwargname, self.kwonlyargnames) #________________________________________________________________ class Unwrapper(object): """A base class for custom unwrap_spec items. Subclasses must override unwrap(). """ def _freeze_(self): return True @not_rpython def unwrap(self, space, w_value): raise NotImplementedError class UnwrapSpecRecipe(object): "NOT_RPYTHON" bases_order = [W_Root, ObjSpace, Arguments, Unwrapper, object] def dispatch(self, el, *args): if isinstance(el, str): getattr(self, "visit_%s" % (el,))(el, *args) elif isinstance(el, tuple): if el[0] == 'INTERNAL:self': self.visit_self(el[1], *args) else: assert False, "not supported any more, use WrappedDefault" elif isinstance(el, WrappedDefault): self.visit__W_Root(W_Root, *args) elif isinstance(el, type): for typ in self.bases_order: if issubclass(el, typ): visit = getattr(self, "visit__%s" % (typ.__name__,)) visit(el, *args) break else: raise Exception("%s: no match for unwrap_spec element %s" % ( self.__class__.__name__, el)) else: raise Exception("unable to dispatch, %s, perhaps your parameter should have started with w_?" % el) def apply_over(self, unwrap_spec, *extra): dispatch = self.dispatch for el in unwrap_spec: dispatch(el, *extra) class UnwrapSpecEmit(UnwrapSpecRecipe): def __init__(self): self.n = 0 self.miniglobals = {} def succ(self): n = self.n self.n += 1 return n def use(self, obj): name = obj.__name__ self.miniglobals[name] = obj return name #________________________________________________________________ class UnwrapSpec_Check(UnwrapSpecRecipe): # checks for checking interp2app func argument names wrt unwrap_spec # and synthetizing an app-level signature def __init__(self, original_sig): self.func = original_sig.func self.orig_arg = iter(original_sig.argnames).next def visit_self(self, cls, app_sig): self.visit__W_Root(cls, app_sig) def checked_space_method(self, typname, app_sig): argname = self.orig_arg() assert not argname.startswith('w_'), ( "unwrapped %s argument %s of built-in function %r in %r should " "not start with 'w_'" % (typname, argname, self.func.func_name, self.func.func_globals['__name__'])) app_sig.append(argname) def visit_index(self, index, app_sig): self.checked_space_method(index, app_sig) def visit_bufferstr(self, el, app_sig): self.checked_space_method(el, app_sig) def visit_text_or_none(self, el, app_sig): self.checked_space_method(el, app_sig) def visit_bytes(self, el, app_sig): self.checked_space_method(el, app_sig) def visit_bytes0(self, el, app_sig): self.checked_space_method(el, app_sig) def visit_text(self, el, app_sig): self.checked_space_method(el, app_sig) def visit_text0(self, el, app_sig): self.checked_space_method(el, app_sig) def visit_unicode(self, el, app_sig): self.checked_space_method(el, app_sig) def visit_fsencode(self, el, app_sig): self.checked_space_method(el, app_sig) def visit_fsencode_or_none(self, el, app_sig): self.checked_space_method(el, app_sig) def visit_nonnegint(self, el, app_sig): self.checked_space_method(el, app_sig) def visit_c_int(self, el, app_sig): self.checked_space_method(el, app_sig) def visit_c_uint(self, el, app_sig): self.checked_space_method(el, app_sig) def visit_c_nonnegint(self, el, app_sig): self.checked_space_method(el, app_sig) def visit_c_short(self, el, app_sig): self.checked_space_method(el, app_sig) def visit_c_ushort(self, el, app_sig): self.checked_space_method(el, app_sig) def visit_c_uid_t(self, el, app_sig): self.checked_space_method(el, app_sig) def visit_truncatedint_w(self, el, app_sig): self.checked_space_method(el, app_sig) def visit__Unwrapper(self, el, app_sig): self.checked_space_method(el, app_sig) def visit__ObjSpace(self, el, app_sig): self.orig_arg() def visit__W_Root(self, el, app_sig): argname = self.orig_arg() if argname == 'self': assert el is not W_Root app_sig.append(argname) return assert argname.startswith('w_'), ( "argument %s of built-in function %r in %r should " "start with 'w_'" % (argname, self.func.func_name, self.func.func_globals['__name__'])) app_sig.append(argname[2:]) def visit__Arguments(self, el, app_sig): self.orig_arg() assert app_sig.varargname is None, ( "built-in function %r has conflicting rest args specs" % self.func) app_sig.varargname = 'args' app_sig.kwargname = 'keywords' def visit_args_w(self, el, app_sig): argname = self.orig_arg() assert argname.endswith('_w'), ( "rest arguments arg %s of built-in function %r should end in '_w'" % (argname, self.func)) assert app_sig.varargname is None, ( "built-in function %r has conflicting rest args specs" % self.func) app_sig.varargname = argname[:-2] def visit_w_args(self, el, app_sig): argname = self.orig_arg() assert argname.startswith('w_'), ( "rest arguments arg %s of built-in function %r should start 'w_'" % (argname, self.func)) assert app_sig.varargname is None, ( "built-in function %r has conflicting rest args specs" % self.func) app_sig.varargname = argname[2:] def visit__object(self, typ, app_sig): name = int_unwrapping_space_method(typ) self.checked_space_method(name, app_sig) def visit_kwonly(self, _, app_sig): argname = self.orig_arg() assert argname == '__kwonly__' app_sig.marker_kwonly() class UnwrapSpec_EmitRun(UnwrapSpecEmit): # collect code to emit for interp2app builtin frames based on unwrap_spec def __init__(self): UnwrapSpecEmit.__init__(self) self.run_args = [] def scopenext(self): return "scope_w[%d]" % self.succ() def visit_self(self, typ): self.run_args.append("space.descr_self_interp_w(%s, %s)" % (self.use(typ), self.scopenext())) def visit__Unwrapper(self, typ): self.run_args.append("%s().unwrap(space, %s)" % (self.use(typ), self.scopenext())) def visit__ObjSpace(self, el): self.run_args.append('space') def visit__W_Root(self, el): if el is not W_Root: self.run_args.append("space.interp_w(%s, %s)" % (self.use(el), self.scopenext())) else: self.run_args.append(self.scopenext()) def visit__Arguments(self, el): self.miniglobals['Arguments'] = Arguments self.run_args.append("Arguments.frompacked(space, %s, %s)" % (self.scopenext(), self.scopenext())) def visit_args_w(self, el): self.run_args.append("space.fixedview(%s)" % self.scopenext()) def visit_w_args(self, el): self.run_args.append(self.scopenext()) def visit__object(self, typ): name = int_unwrapping_space_method(typ) self.run_args.append("space.%s(%s)" % (name, self.scopenext())) def visit_index(self, typ): self.run_args.append("space.getindex_w(%s, space.w_OverflowError)" % (self.scopenext(), )) def visit_bufferstr(self, typ): self.run_args.append("space.charbuf_w(%s)" % (self.scopenext(),)) def visit_text_or_none(self, typ): self.run_args.append("space.text_or_none_w(%s)" % (self.scopenext(),)) def visit_bytes(self, typ): self.run_args.append("space.bytes_w(%s)" % (self.scopenext(),)) def visit_bytes0(self, typ): self.run_args.append("space.bytes0_w(%s)" % (self.scopenext(),)) def visit_text(self, typ): self.run_args.append("space.text_w(%s)" % (self.scopenext(),)) def visit_text0(self, typ): self.run_args.append("space.text0_w(%s)" % (self.scopenext(),)) def visit_unicode(self, typ): self.run_args.append("space.unicode_w(%s)" % (self.scopenext(),)) def visit_fsencode(self, typ): self.run_args.append("space.fsencode_w(%s)" % (self.scopenext(),)) def visit_fsencode_or_none(self, typ): self.run_args.append("space.fsencode_or_none_w(%s)" % (self.scopenext(),)) def visit_nonnegint(self, typ): self.run_args.append("space.gateway_nonnegint_w(%s)" % ( self.scopenext(),)) def visit_c_int(self, typ): self.run_args.append("space.c_int_w(%s)" % (self.scopenext(),)) def visit_c_uint(self, typ): self.run_args.append("space.c_uint_w(%s)" % (self.scopenext(),)) def visit_c_nonnegint(self, typ): self.run_args.append("space.c_nonnegint_w(%s)" % (self.scopenext(),)) def visit_c_short(self, typ): self.run_args.append("space.c_short_w(%s)" % (self.scopenext(),)) def visit_c_ushort(self, typ): self.run_args.append("space.c_ushort_w(%s)" % (self.scopenext(),)) def visit_c_uid_t(self, typ): self.run_args.append("space.c_uid_t_w(%s)" % (self.scopenext(),)) def visit_truncatedint_w(self, typ): self.run_args.append("space.truncatedint_w(%s)" % (self.scopenext(),)) def visit_kwonly(self, typ): self.run_args.append("None") def _make_unwrap_activation_class(self, unwrap_spec, cache={}): try: key = tuple(unwrap_spec) activation_factory_cls, run_args = cache[key] assert run_args == self.run_args, ( "unexpected: same spec, different run_args") return activation_factory_cls except KeyError: parts = [] for el in unwrap_spec: if isinstance(el, tuple): parts.append(''.join([getattr(subel, '__name__', subel) for subel in el])) elif isinstance(el, WrappedDefault): parts.append('W_Root') else: parts.append(getattr(el, '__name__', el)) label = '_'.join(parts) #print label d = {} source = """if 1: def _run(self, space, scope_w): return self.behavior(%s) \n""" % (', '.join(self.run_args),) exec compile2(source) in self.miniglobals, d activation_cls = type("BuiltinActivation_UwS_%s" % label, (BuiltinActivation,), d) activation_cls._immutable_ = True cache[key] = activation_cls, self.run_args return activation_cls def make_activation(unwrap_spec, func): emit = UnwrapSpec_EmitRun() emit.apply_over(unwrap_spec) activation_uw_cls = emit._make_unwrap_activation_class(unwrap_spec) return activation_uw_cls(func) make_activation = staticmethod(make_activation) class BuiltinActivation(object): _immutable_ = True @not_rpython def __init__(self, behavior): self.behavior = behavior def _run(self, space, scope_w): """Subclasses with behavior specific for an unwrap spec are generated""" raise TypeError("abstract") #________________________________________________________________ class FastFuncNotSupported(Exception): pass class UnwrapSpec_FastFunc_Unwrap(UnwrapSpecEmit): def __init__(self): UnwrapSpecEmit.__init__(self) self.args = [] self.unwrap = [] self.finger = 0 def dispatch(self, el, *args): UnwrapSpecEmit.dispatch(self, el, *args) self.finger += 1 if self.n > 4: raise FastFuncNotSupported def nextarg(self): arg = "w%d" % self.succ() self.args.append(arg) return arg def visit_self(self, typ): self.unwrap.append("space.descr_self_interp_w(%s, %s)" % (self.use(typ), self.nextarg())) def visit__Unwrapper(self, typ): self.unwrap.append("%s().unwrap(space, %s)" % (self.use(typ), self.nextarg())) def visit__ObjSpace(self, el): if self.finger > 1: raise FastFuncNotSupported self.unwrap.append("space") def visit__W_Root(self, el): if el is not W_Root: self.unwrap.append("space.interp_w(%s, %s)" % (self.use(el), self.nextarg())) else: self.unwrap.append(self.nextarg()) def visit__Arguments(self, el): raise FastFuncNotSupported def visit_args_w(self, el): raise FastFuncNotSupported def visit_w_args(self, el): raise FastFuncNotSupported def visit__object(self, typ): name = int_unwrapping_space_method(typ) self.unwrap.append("space.%s(%s)" % (name, self.nextarg())) def visit_index(self, typ): self.unwrap.append("space.getindex_w(%s, space.w_OverflowError)" % (self.nextarg()), ) def visit_bufferstr(self, typ): self.unwrap.append("space.charbuf_w(%s)" % (self.nextarg(),)) def visit_text_or_none(self, typ): self.unwrap.append("space.text_or_none_w(%s)" % (self.nextarg(),)) def visit_bytes(self, typ): self.unwrap.append("space.bytes_w(%s)" % (self.nextarg(),)) def visit_bytes0(self, typ): self.unwrap.append("space.bytes0_w(%s)" % (self.nextarg(),)) def visit_text(self, typ): self.unwrap.append("space.text_w(%s)" % (self.nextarg(),)) def visit_unicode(self, typ): self.unwrap.append("space.unicode_w(%s)" % (self.nextarg(),)) def visit_text0(self, typ): self.unwrap.append("space.text0_w(%s)" % (self.nextarg(),)) def visit_fsencode(self, typ): self.unwrap.append("space.fsencode_w(%s)" % (self.nextarg(),)) def visit_fsencode_or_none(self, typ): self.unwrap.append("space.fsencode_or_none_w(%s)" % (self.nextarg(),)) def visit_nonnegint(self, typ): self.unwrap.append("space.gateway_nonnegint_w(%s)" % (self.nextarg(),)) def visit_c_int(self, typ): self.unwrap.append("space.c_int_w(%s)" % (self.nextarg(),)) def visit_c_uint(self, typ): self.unwrap.append("space.c_uint_w(%s)" % (self.nextarg(),)) def visit_c_nonnegint(self, typ): self.unwrap.append("space.c_nonnegint_w(%s)" % (self.nextarg(),)) def visit_c_short(self, typ): self.unwrap.append("space.c_short_w(%s)" % (self.nextarg(),)) def visit_c_ushort(self, typ): self.unwrap.append("space.c_ushort_w(%s)" % (self.nextarg(),)) def visit_c_uid_t(self, typ): self.unwrap.append("space.c_uid_t_w(%s)" % (self.nextarg(),)) def visit_truncatedint_w(self, typ): self.unwrap.append("space.truncatedint_w(%s)" % (self.nextarg(),)) def visit_kwonly(self, typ): raise FastFuncNotSupported @staticmethod def make_fastfunc(unwrap_spec, func): unwrap_info = UnwrapSpec_FastFunc_Unwrap() unwrap_info.apply_over(unwrap_spec) narg = unwrap_info.n args = ['space'] + unwrap_info.args if args == unwrap_info.unwrap: fastfunc = func else: # try to avoid excessive bloat mod = func.__module__ if mod is None: mod = "" if mod == 'pypy.interpreter.astcompiler.ast': raise FastFuncNotSupported #if (not mod.startswith('pypy.module.__builtin__') and # not mod.startswith('pypy.module.sys') and # not mod.startswith('pypy.module.math')): # if not func.__name__.startswith('descr'): # raise FastFuncNotSupported d = {} unwrap_info.miniglobals['func'] = func source = """if 1: def fastfunc_%s_%d(%s): return func(%s) \n""" % (func.__name__.replace('-', '_'), narg, ', '.join(args), ', '.join(unwrap_info.unwrap)) exec compile2(source) in unwrap_info.miniglobals, d fastfunc = d['fastfunc_%s_%d' % (func.__name__.replace('-', '_'), narg)] return narg, fastfunc def int_unwrapping_space_method(typ): assert typ in (int, str, float, unicode, r_longlong, r_uint, r_ulonglong, bool) if typ is r_int is r_longlong: return 'gateway_r_longlong_w' elif typ in (str, unicode): return typ.__name__ + '_w' elif typ is bool: # For argument clinic's "bool" specifier: accept any object, and # convert it to a boolean value. If you don't want this # behavior, you need to say "int" in the unwrap_spec(). Please # use only to emulate "bool" in argument clinic or the 'p' # letter in PyArg_ParseTuple(). Accepting *anything* when a # boolean flag is expected feels like it comes straight from # JavaScript: it is a sure way to hide bugs imho . return 'is_true' else: return 'gateway_' + typ.__name__ + '_w' def unwrap_spec(*spec, **kwargs): """A decorator which attaches the unwrap_spec attribute. Use either positional or keyword arguments. - positional arguments must be as many as the function parameters - keywords arguments allow to change only some parameter specs """ assert spec or kwargs def decorator(func): if kwargs: if spec: raise ValueError("Please specify either positional or " "keywords arguments") func.unwrap_spec = kwargs else: func.unwrap_spec = spec return func return decorator class WrappedDefault(object): """ Can be used inside unwrap_spec as WrappedDefault(3) which means it'll be treated as W_Root, but fed with default which will be a wrapped argument to constructor. """ def __init__(self, default_value): self.default_value = default_value def build_unwrap_spec(func, argnames, self_type=None): """build the list of parameter unwrap spec for the function. """ unwrap_spec = getattr(func, 'unwrap_spec', None) if isinstance(unwrap_spec, dict): kw_spec = unwrap_spec unwrap_spec = None else: kw_spec = {} if unwrap_spec is None: # build unwrap_spec after the name of arguments unwrap_spec = [] for argname in argnames: if argname == 'self': unwrap_spec.append('self') elif argname == 'space': unwrap_spec.append(ObjSpace) elif argname == '__args__': unwrap_spec.append(Arguments) elif argname == 'args_w': unwrap_spec.append('args_w') elif argname.startswith('w_'): unwrap_spec.append(W_Root) elif argname == '__kwonly__': unwrap_spec.append('kwonly') else: unwrap_spec.append(None) # apply kw_spec for name, spec in kw_spec.items(): try: unwrap_spec[argnames.index(name)] = spec except ValueError: raise ValueError("unwrap_spec() got a keyword %r but it is not " "the name of an argument of the following " "function" % (name,)) assert str not in unwrap_spec # use 'text' or 'bytes' instead of str return unwrap_spec class BuiltinCode(Code): "The code object implementing a built-in (interpreter-level) hook." _immutable_ = True hidden_applevel = True descrmismatch_op = None descr_reqcls = None # When a BuiltinCode is stored in a Function object, # you get the functionality of CPython's built-in function type. @not_rpython def __init__(self, func, unwrap_spec=None, self_type=None, descrmismatch=None, doc=None): # 'implfunc' is the interpreter-level function. # Note that this uses a lot of (construction-time) introspection. Code.__init__(self, func.__name__) self.docstring = doc or func.__doc__ self.identifier = "%s-%s-%s" % (func.__module__, func.__name__, getattr(self_type, '__name__', '*')) # unwrap_spec can be passed to interp2app or # attached as an attribute to the function. # It is a list of types or singleton objects: # baseobjspace.ObjSpace is used to specify the space argument # baseobjspace.W_Root is for wrapped arguments to keep wrapped # argument.Arguments is for a final rest arguments Arguments object # 'args_w' for fixedview applied to rest arguments # 'w_args' for rest arguments passed as wrapped tuple # str,int,float: unwrap argument as such type # (function, cls) use function to check/unwrap argument of type cls # First extract the signature from the (CPython-level) code object from pypy.interpreter import pycode sig = pycode.cpython_code_signature(func.func_code) argnames = sig.argnames varargname = sig.varargname kwargname = sig.kwargname if sig.kwonlyargnames: import pdb; pdb.set_trace() self._argnames = argnames if unwrap_spec is None: unwrap_spec = build_unwrap_spec(func, argnames, self_type) if self_type: assert unwrap_spec[0] == 'self', "self_type without 'self' spec element" unwrap_spec = list(unwrap_spec) if descrmismatch is not None: assert issubclass(self_type, W_Root) unwrap_spec[0] = ('INTERNAL:self', self_type) self.descrmismatch_op = descrmismatch self.descr_reqcls = self_type else: unwrap_spec[0] = self_type else: assert descrmismatch is None, ( "descrmismatch without a self-type specified") orig_sig = SignatureBuilder(func, argnames, varargname, kwargname) app_sig = SignatureBuilder(func) UnwrapSpec_Check(orig_sig).apply_over(unwrap_spec, app_sig) self.sig = app_sig.signature() argnames = self.sig.argnames varargname = self.sig.varargname self.minargs = len(argnames) if varargname: self.maxargs = sys.maxint else: self.maxargs = self.minargs self.activation = UnwrapSpec_EmitRun.make_activation(unwrap_spec, func) self._bltin = func self._unwrap_spec = unwrap_spec # speed hack if 0 <= len(unwrap_spec) <= 5: try: arity, fastfunc = UnwrapSpec_FastFunc_Unwrap.make_fastfunc( unwrap_spec, func) except FastFuncNotSupported: if unwrap_spec == [ObjSpace, Arguments]: self.__class__ = BuiltinCodePassThroughArguments0 self.func__args__ = func elif unwrap_spec == [ObjSpace, W_Root, Arguments]: self.__class__ = BuiltinCodePassThroughArguments1 self.func__args__ = func elif unwrap_spec == [self_type, ObjSpace, Arguments]: self.__class__ = BuiltinCodePassThroughArguments1 miniglobals = {'func': func, 'self_type': self_type} d = {} source = """if 1: def _call(space, w_obj, args): self = space.descr_self_interp_w(self_type, w_obj) return func(self, space, args) \n""" exec compile2(source) in miniglobals, d self.func__args__ = d['_call'] else: self.__class__ = globals()['BuiltinCode%d' % arity] setattr(self, 'fastfunc_%d' % arity, fastfunc) def descr__reduce__(self, space): from pypy.interpreter.mixedmodule import MixedModule w_mod = space.getbuiltinmodule('_pickle_support') mod = space.interp_w(MixedModule, w_mod) builtin_code = mod.get('builtin_code') return space.newtuple([builtin_code, space.newtuple([space.newtext(self.identifier)])]) @staticmethod def find(space, identifier): from pypy.interpreter.function import Function return Function.find(space, identifier).code def signature(self): return self.sig def getdocstring(self, space): return space.newtext_or_none(self.docstring) def funcrun(self, func, args): return BuiltinCode.funcrun_obj(self, func, None, args) def funcrun_obj(self, func, w_obj, args): space = func.space activation = self.activation scope_w = args.parse_obj(w_obj, func.name, self.sig, func.defs_w, func.w_kw_defs, self.minargs) try: w_result = activation._run(space, scope_w) except DescrMismatch: if w_obj is not None: args = args.prepend(w_obj) return scope_w[0].descr_call_mismatch(space, self.descrmismatch_op, self.descr_reqcls, args) except Exception as e: self.handle_exception(space, e) w_result = None if w_result is None: w_result = space.w_None return w_result def handle_exception(self, space, e): try: if not we_are_translated(): raise raise e except OperationError: raise except Exception as e: # general fall-back from pypy.interpreter import error raise error.get_converted_unexpected_exception(space, e) # (verbose) performance hack below class BuiltinCodePassThroughArguments0(BuiltinCode): _immutable_ = True def funcrun(self, func, args): space = func.space try: w_result = self.func__args__(space, args) except DescrMismatch: return args.firstarg().descr_call_mismatch(space, self.descrmismatch_op, self.descr_reqcls, args) except Exception as e: self.handle_exception(space, e) w_result = None if w_result is None: w_result = space.w_None return w_result class BuiltinCodePassThroughArguments1(BuiltinCode): _immutable_ = True fast_natural_arity = Code.PASSTHROUGHARGS1 def funcrun_obj(self, func, w_obj, args): space = func.space try: w_result = self.func__args__(space, w_obj, args) except DescrMismatch: return args.firstarg().descr_call_mismatch(space, self.descrmismatch_op, self.descr_reqcls, args.prepend(w_obj)) except Exception as e: self.handle_exception(space, e) w_result = None if w_result is None: w_result = space.w_None return w_result class BuiltinCode0(BuiltinCode): _immutable_ = True fast_natural_arity = 0 def fastcall_0(self, space, w_func): try: w_result = self.fastfunc_0(space) except DescrMismatch: raise oefmt(space.w_SystemError, "unexpected DescrMismatch error") except Exception as e: self.handle_exception(space, e) w_result = None if w_result is None: w_result = space.w_None return w_result w_root_or_none = sigtypes.instance(W_Root, can_be_None=True) @finishsigs class BuiltinCode1(BuiltinCode): _immutable_ = True fast_natural_arity = 1 @signature(sigtypes.self(), sigtypes.any(), w_root_or_none, w_root_or_none, returns=w_root_or_none) def fastcall_1(self, space, w_func, w1): try: w_result = self.fastfunc_1(space, w1) except DescrMismatch: return w1.descr_call_mismatch(space, self.descrmismatch_op, self.descr_reqcls, Arguments(space, [w1])) except Exception as e: self.handle_exception(space, e) w_result = None if w_result is None: w_result = space.w_None return w_result @finishsigs class BuiltinCode2(BuiltinCode): _immutable_ = True fast_natural_arity = 2 @signature(sigtypes.self(), sigtypes.any(), w_root_or_none, w_root_or_none, w_root_or_none, returns=w_root_or_none) def fastcall_2(self, space, w_func, w1, w2): try: w_result = self.fastfunc_2(space, w1, w2) except DescrMismatch: return w1.descr_call_mismatch(space, self.descrmismatch_op, self.descr_reqcls, Arguments(space, [w1, w2])) except Exception as e: self.handle_exception(space, e) w_result = None if w_result is None: w_result = space.w_None return w_result @finishsigs class BuiltinCode3(BuiltinCode): _immutable_ = True fast_natural_arity = 3 @signature(sigtypes.self(), sigtypes.any(), w_root_or_none, w_root_or_none, w_root_or_none, w_root_or_none, returns=w_root_or_none) def fastcall_3(self, space, func, w1, w2, w3): try: w_result = self.fastfunc_3(space, w1, w2, w3) except DescrMismatch: return w1.descr_call_mismatch(space, self.descrmismatch_op, self.descr_reqcls, Arguments(space, [w1, w2, w3])) except Exception as e: self.handle_exception(space, e) w_result = None if w_result is None: w_result = space.w_None return w_result @finishsigs class BuiltinCode4(BuiltinCode): _immutable_ = True fast_natural_arity = 4 @signature(sigtypes.self(), sigtypes.any(), w_root_or_none, w_root_or_none, w_root_or_none, w_root_or_none, w_root_or_none, returns=w_root_or_none) def fastcall_4(self, space, func, w1, w2, w3, w4): from rpython.rlib.debug import check_annotation try: w_result = self.fastfunc_4(space, w1, w2, w3, w4) except DescrMismatch: return w1.descr_call_mismatch(space, self.descrmismatch_op, self.descr_reqcls, Arguments(space, [w1, w2, w3, w4])) except Exception as e: self.handle_exception(space, e) w_result = None if w_result is None: w_result = space.w_None return w_result def interpindirect2app(unbound_meth, unwrap_spec=None): base_cls = unbound_meth.im_class func = unbound_meth.im_func args = inspect.getargs(func.func_code) if args.varargs or args.keywords: raise TypeError("Varargs and keywords not supported in unwrap_spec") argspec = ', '.join([arg for arg in args.args[1:]]) func_code = py.code.Source(""" def f(self, %(args)s): return self.%(func_name)s(%(args)s) """ % {'args': argspec, 'func_name': func.func_name}) d = {} exec func_code.compile() in d f = d['f'] f.func_defaults = unbound_meth.func_defaults f.func_doc = unbound_meth.func_doc f.__module__ = func.__module__ # necessary for unique identifiers for pickling f.func_name = func.func_name if unwrap_spec is None: unwrap_spec = getattr(unbound_meth, 'unwrap_spec', {}) else: assert isinstance(unwrap_spec, dict) unwrap_spec = unwrap_spec.copy() unwrap_spec['self'] = base_cls return interp2app(globals()['unwrap_spec'](**unwrap_spec)(f)) class interp2app(W_Root): """Build a gateway that calls 'f' at interp-level.""" # Takes optionally an unwrap_spec, see BuiltinCode instancecache = {} @not_rpython def __new__(cls, f, app_name=None, unwrap_spec=None, descrmismatch=None, as_classmethod=False, doc=None): # f must be a function whose name does NOT start with 'app_' self_type = None if hasattr(f, 'im_func'): self_type = f.im_class f = f.im_func if not isinstance(f, types.FunctionType): raise TypeError("function expected, got %r instead" % f) if app_name is None: if f.func_name.startswith('app_'): raise ValueError("function name %r suspiciously starts " "with 'app_'" % f.func_name) app_name = f.func_name if unwrap_spec is not None: unwrap_spec_key = tuple(unwrap_spec) else: unwrap_spec_key = None key = (f, self_type, unwrap_spec_key, descrmismatch, as_classmethod) if key in cls.instancecache: result = cls.instancecache[key] assert result.__class__ is cls return result self = W_Root.__new__(cls) cls.instancecache[key] = self self._code = BuiltinCode(f, unwrap_spec=unwrap_spec, self_type=self_type, descrmismatch=descrmismatch, doc=doc) self.__name__ = f.func_name self.name = app_name self.as_classmethod = as_classmethod argnames = self._code._argnames defaults = f.func_defaults or () self._staticdefs = dict(zip( argnames[len(argnames) - len(defaults):], defaults)) return self @not_rpython def _getdefaults(self, space): alldefs_w = {} assert len(self._code._argnames) == len(self._code._unwrap_spec) for name, spec in zip(self._code._argnames, self._code._unwrap_spec): if name == '__kwonly__': continue defaultval = self._staticdefs.get(name, NO_DEFAULT) w_def = Ellipsis if name.startswith('w_'): assert defaultval in (NO_DEFAULT, None), ( "%s: default value for '%s' can only be None, got %r; " "use unwrap_spec(...=WrappedDefault(default))" % ( self._code.identifier, name, defaultval)) if defaultval is None: w_def = None if isinstance(spec, tuple) and spec[0] is W_Root: assert False, "use WrappedDefault" elif isinstance(spec, WrappedDefault): assert name.startswith('w_') defaultval = spec.default_value w_def = Ellipsis if defaultval is not NO_DEFAULT: if name != '__args__' and name != 'args_w': if w_def is Ellipsis: if isinstance(defaultval, str) and ( # XXX hackish spec == 'bytes' or spec == 'bufferstr' or isinstance(spec, WrappedDefault)): w_def = space.newbytes(defaultval) else: w_def = space.wrap(defaultval) if name.startswith('w_'): name = name[2:] alldefs_w[name] = w_def # # Here, 'alldefs_w' maps some argnames to their wrapped default # value. We return two lists: # - a list of defaults for positional arguments, which covers # some suffix of the sig.argnames list # - a list of pairs (w_name, w_def) for kwonly arguments # sig = self._code.sig first_defined = 0 while (first_defined < len(sig.argnames) and sig.argnames[first_defined] not in alldefs_w): first_defined += 1 defs_w = [alldefs_w.pop(name) for name in sig.argnames[first_defined:]] kw_defs_w = None if alldefs_w: kw_defs_w = [] for name, w_def in sorted(alldefs_w.items()): assert name in sig.kwonlyargnames w_name = space.newunicode(name.decode('utf-8')) kw_defs_w.append((w_name, w_def)) return defs_w, kw_defs_w # lazy binding to space def spacebind(self, space): # we first make a real Function object out of it # and the result is a wrapped version of this Function. return self.get_function(space) def get_function(self, space): return self.getcache(space).getorbuild(self) def getcache(self, space): return space.fromcache(GatewayCache) class GatewayCache(SpaceCache): @not_rpython def build(cache, gateway): space = cache.space defs_w, kw_defs_w = gateway._getdefaults(space) code = gateway._code fn = FunctionWithFixedCode(space, code, None, defs_w, kw_defs_w, forcename=gateway.name) if not space.config.translating: fn.add_to_table() if gateway.as_classmethod: fn = ClassMethod(fn) # from pypy.module.sys.vm import exc_info if code._bltin is exc_info: assert space._code_of_sys_exc_info is None space._code_of_sys_exc_info = code # if hasattr(space, '_see_interp2app'): space._see_interp2app(gateway) # only for fake/objspace.py return fn # # the next gateways are to be used only for # temporary/initialization purposes class interp2app_temp(interp2app): "NOT_RPYTHON" def getcache(self, space): return self.__dict__.setdefault(space, GatewayCache(space)) # and now for something completely different ... # class ApplevelClass: """NOT_RPYTHON A container for app-level source code that should be executed as a module in the object space; interphook() builds a static interp-level function that invokes the callable with the given name at app-level.""" hidden_applevel = True def __init__(self, source, filename=None, modname='__builtin__'): # HAAACK (but a good one) self.filename = filename self.source = str(py.code.Source(source).deindent()) self.modname = modname if filename is None: f = sys._getframe(1) filename = '<%s:%d>' % (f.f_code.co_filename, f.f_lineno) if not os.path.exists(filename): # make source code available for tracebacks lines = [x + "\n" for x in source.split("\n")] py.std.linecache.cache[filename] = (1, None, lines, filename) self.filename = filename def __repr__(self): return "" % (self.filename,) def getwdict(self, space): return space.fromcache(ApplevelCache).getorbuild(self) def buildmodule(self, space, name='applevel'): from pypy.interpreter.module import Module return Module(space, space.newtext(name), self.getwdict(space)) def wget(self, space, name): w_globals = self.getwdict(space) return space.getitem(w_globals, space.newtext(name)) @not_rpython def interphook(self, name): def appcaller(space, *args_w): if not isinstance(space, ObjSpace): raise TypeError("first argument must be a space instance.") # the last argument can be an Arguments w_func = self.wget(space, name) if not args_w: return space.call_function(w_func) else: args = args_w[-1] assert args is not None if not isinstance(args, Arguments): return space.call_function(w_func, *args_w) else: if len(args_w) == 2: return space.call_obj_args(w_func, args_w[0], args) elif len(args_w) > 2: # xxx is this used at all? # ...which is merged with the previous arguments, if any args = args.replace_arguments(list(args_w[:-1]) + args.arguments_w) return space.call_args(w_func, args) def get_function(space): w_func = self.wget(space, name) return space.unwrap(w_func) appcaller = func_with_new_name(appcaller, name) appcaller.get_function = get_function return appcaller def _freeze_(self): return True # hint for the annotator: applevel instances are constants class ApplevelCache(SpaceCache): """NOT_RPYTHON The cache mapping each applevel instance to its lazily built w_dict""" @not_rpython def build(self, app): "Called indirectly by Applevel.getwdict()." return build_applevel_dict(app, self.space) # __________ pure applevel version __________ @not_rpython def build_applevel_dict(self, space): w_glob = space.newdict(module=True) space.setitem(w_glob, space.newtext('__name__'), space.newtext(self.modname)) space.exec_(self.source, w_glob, w_glob, hidden_applevel=self.hidden_applevel, filename=self.filename) return w_glob # ____________________________________________________________ @not_rpython def appdef(source, applevel=ApplevelClass, filename=None): """ build an app-level helper function, like for example: myfunc = appdef('''myfunc(x, y): return x+y ''') """ prefix = "" if not isinstance(source, str): flags = source.__code__.co_flags source = py.std.inspect.getsource(source).lstrip() while source.startswith(('@py.test.mark.', '@pytest.mark.')): # these decorators are known to return the same function # object, we may ignore them assert '\n' in source source = source[source.find('\n') + 1:].lstrip() assert source.startswith("def "), "can only transform functions" source = source[4:] # The following flags have no effect any more in app-level code # (i.e. they are always on anyway), and have been removed: # CO_FUTURE_DIVISION # CO_FUTURE_ABSOLUTE_IMPORT # CO_FUTURE_PRINT_FUNCTION # CO_FUTURE_UNICODE_LITERALS # Original code was, for each of these flags: # if flags & __future__.CO_xxx: # prefix += "from __future__ import yyy\n" p = source.find('(') assert p >= 0 funcname = source[:p].strip() source = source[p:] assert source.strip() funcsource = prefix + "def %s%s\n" % (funcname, source) #for debugging of wrong source code: py.std.parser.suite(funcsource) a = applevel(funcsource, filename=filename) return a.interphook(funcname) applevel = ApplevelClass # backward compatibility app2interp = appdef # backward compatibility class applevel_temp(ApplevelClass): hidden_applevel = False def getwdict(self, space): # no cache return build_applevel_dict(self, space) # app2interp_temp is used for testing mainly @not_rpython def app2interp_temp(func, applevel_temp=applevel_temp, filename=None): return appdef(func, applevel_temp, filename=filename)