def test_unmatch_signature(self):
args = MockArgs([1, 2, 3])
sig = Signature(['a', 'b', 'c'], None, None)
data = args.match_signature(sig, [])
new_args = args.unmatch_signature(sig, data)
assert args.unpack() == new_args.unpack()
args = MockArgs([1])
sig = Signature(['a', 'b', 'c'], None, None)
data = args.match_signature(sig, [2, 3])
new_args = args.unmatch_signature(sig, data)
assert args.unpack() == new_args.unpack()
args = MockArgs([1, 2, 3, 4, 5])
sig = Signature(['a', 'b', 'c'], 'r', None)
data = args.match_signature(sig, [])
new_args = args.unmatch_signature(sig, data)
assert args.unpack() == new_args.unpack()
args = MockArgs([1], {'c': 3, 'b': 2})
sig = Signature(['a', 'b', 'c'], None, None)
data = args.match_signature(sig, [])
new_args = args.unmatch_signature(sig, data)
assert args.unpack() == new_args.unpack()
args = MockArgs([1], {'c': 5})
sig = Signature(['a', 'b', 'c'], None, None)
data = args.match_signature(sig, [2, 3])
new_args = args.unmatch_signature(sig, data)
assert args.unpack() == new_args.unpack()
def builder(translator, func):
# build a hacked graph that doesn't take a *arg any more, but
# individual extra arguments
graph = translator.buildflowgraph(func)
argnames, vararg, kwarg = graph.signature
assert vararg, "graph should have a *arg at this point"
assert not kwarg, "where does this **arg come from??"
argscopy = [Variable(v) for v in graph.getargs()]
starargs = [
Variable('stararg%d' % i) for i in range(nb_extra_args)
]
newstartblock = Block(argscopy[:-1] + starargs)
newtup = op.newtuple(*starargs)
newtup.result = argscopy[-1]
newstartblock.operations.append(newtup)
newstartblock.closeblock(Link(argscopy, graph.startblock))
graph.startblock = newstartblock
argnames = argnames + ['.star%d' % i for i in range(nb_extra_args)]
graph.signature = Signature(argnames)
# note that we can mostly ignore defaults: if nb_extra_args > 0,
# then defaults aren't applied. if nb_extra_args == 0, then this
# just removes the *arg and the defaults keep their meaning.
if nb_extra_args > 0:
graph.defaults = None # shouldn't be used in this case
checkgraph(graph)
return graph
def __init__(self,
bookkeeper,
pyobj=None,
name=None,
signature=None,
defaults=None,
specializer=None):
super(FunctionDesc, self).__init__(bookkeeper, pyobj)
if name is None:
name = pyobj.func_name
if signature is None:
if hasattr(pyobj, '_generator_next_method_of_'):
from rpython.flowspace.argument import Signature
signature = Signature(['entry']) # haaaaaack
defaults = ()
else:
signature = cpython_code_signature(pyobj.func_code)
if defaults is None:
defaults = pyobj.func_defaults
self.name = name
self.signature = signature
self.defaults = defaults or ()
# 'specializer' is a function with the following signature:
# specializer(funcdesc, args_s) => graph
# or => s_result (overridden/memo cases)
self.specializer = specializer
self._cache = {} # convenience for the specializer
def cpython_code_signature(code):
"([list-of-arg-names], vararg-name-or-None, kwarg-name-or-None)."
argcount = code.co_argcount
argnames = list(code.co_varnames[:argcount])
if code.co_flags & CO_VARARGS:
varargname = code.co_varnames[argcount]
argcount += 1
else:
varargname = None
if code.co_flags & CO_VARKEYWORDS:
kwargname = code.co_varnames[argcount]
argcount += 1
else:
kwargname = None
return Signature(argnames, varargname, kwargname)
def newfuncdesc(self, pyfunc):
name = pyfunc.__name__
if hasattr(pyfunc, '_generator_next_method_of_'):
from rpython.flowspace.argument import Signature
signature = Signature(['entry']) # haaaaaack
defaults = ()
else:
signature = cpython_code_signature(pyfunc.__code__)
defaults = pyfunc.__defaults__
# get the specializer based on the tag of the 'pyobj'
# (if any), according to the current policy
tag = getattr(pyfunc, '_annspecialcase_', None)
specializer = self.annotator.policy.get_specializer(tag)
if specializer is memo:
return description.MemoDesc(self, pyfunc, name, signature,
defaults, specializer)
return description.FunctionDesc(self, pyfunc, name, signature,
defaults, specializer)
def tweak_generator_body_graph(Entry, graph):
# First, always run simplify_graph in order to reduce the number of
# variables passed around
simplify_graph(graph)
insert_empty_startblock(graph)
_insert_reads(graph.startblock, Entry.varnames)
Entry.block = graph.startblock
#
mappings = [Entry]
#
stopblock = Block([])
op0 = op.simple_call(const(StopIteration))
op1 = op.type(op0.result)
stopblock.operations = [op0, op1]
stopblock.closeblock(Link([op1.result, op0.result], graph.exceptblock))
#
for block in list(graph.iterblocks()):
for exit in block.exits:
if exit.target is graph.returnblock:
exit.args = []
exit.target = stopblock
assert block is not stopblock
for index in range(len(block.operations) - 1, -1, -1):
hlop = block.operations[index]
if hlop.opname == 'yield_':
[v_yielded_value] = hlop.args
del block.operations[index]
newlink = split_block(block, index)
newblock = newlink.target
#
class Resume(AbstractPosition):
_immutable_ = True
block = newblock
Resume.__name__ = 'Resume%d' % len(mappings)
mappings.append(Resume)
varnames = get_variable_names(newlink.args)
#
_insert_reads(newblock, varnames)
#
op_resume = op.simple_call(const(Resume))
block.operations.append(op_resume)
v_resume = op_resume.result
for i, name in enumerate(varnames):
block.operations.append(
op.setattr(v_resume, const(name), newlink.args[i]))
op_pair = op.newtuple(v_resume, v_yielded_value)
block.operations.append(op_pair)
newlink.args = [op_pair.result]
newlink.target = graph.returnblock
#
regular_entry_block = Block([Variable('entry')])
block = regular_entry_block
for Resume in mappings:
op_check = op.isinstance(block.inputargs[0], const(Resume))
block.operations.append(op_check)
block.exitswitch = op_check.result
link1 = Link([block.inputargs[0]], Resume.block)
link1.exitcase = True
nextblock = Block([Variable('entry')])
link2 = Link([block.inputargs[0]], nextblock)
link2.exitcase = False
block.closeblock(link1, link2)
block = nextblock
block.closeblock(
Link([
Constant(AssertionError),
Constant(AssertionError("bad generator class"))
], graph.exceptblock))
graph.startblock = regular_entry_block
graph.signature = Signature(['entry'])
graph.defaults = ()
checkgraph(graph)
eliminate_empty_blocks(graph)
def normalize_calltable_row_signature(annotator, shape, row):
graphs = row.values()
assert graphs, "no graph??"
sig0 = graphs[0].signature
defaults0 = graphs[0].defaults
for graph in graphs[1:]:
if graph.signature != sig0:
break
if graph.defaults != defaults0:
break
else:
return False # nothing to do, all signatures already match
shape_cnt, shape_keys, shape_star = shape
assert not shape_star, "should have been removed at this stage"
# for the first 'shape_cnt' arguments we need to generalize to
# a common type
call_nbargs = shape_cnt + len(shape_keys)
did_something = False
for graph in graphs:
argnames, varargname, kwargname = graph.signature
assert not varargname, "XXX not implemented"
assert not kwargname, "XXX not implemented" # ?
inputargs_s = [annotator.binding(v) for v in graph.getargs()]
argorder = range(shape_cnt)
for key in shape_keys:
i = list(argnames).index(key)
assert i not in argorder
argorder.append(i)
need_reordering = (argorder != range(call_nbargs))
if need_reordering or len(graph.getargs()) != call_nbargs:
oldblock = graph.startblock
inlist = []
defaults = graph.defaults or ()
num_nondefaults = len(inputargs_s) - len(defaults)
defaults = [description.NODEFAULT
] * num_nondefaults + list(defaults)
newdefaults = []
for j in argorder:
v = Variable(graph.getargs()[j])
annotator.setbinding(v, inputargs_s[j])
inlist.append(v)
newdefaults.append(defaults[j])
newblock = Block(inlist)
# prepare the output args of newblock:
# 1. collect the positional arguments
outlist = inlist[:shape_cnt]
# 2. add defaults and keywords
for j in range(shape_cnt, len(inputargs_s)):
try:
i = argorder.index(j)
v = inlist[i]
except ValueError:
default = defaults[j]
if default is description.NODEFAULT:
raise TyperError(
"call pattern has %d positional arguments, "
"but %r takes at least %d arguments" %
(shape_cnt, graph.name, num_nondefaults))
v = Constant(default)
outlist.append(v)
newblock.closeblock(Link(outlist, oldblock))
graph.startblock = newblock
for i in range(len(newdefaults) - 1, -1, -1):
if newdefaults[i] is description.NODEFAULT:
newdefaults = newdefaults[i:]
break
graph.defaults = tuple(newdefaults)
graph.signature = Signature([argnames[j] for j in argorder], None,
None)
# finished
checkgraph(graph)
annotator.annotated[newblock] = annotator.annotated[oldblock]
did_something = True
return did_something
def test_helpers(self):
sig = Signature(["a", "b", "c"], None, None)
assert sig.num_argnames() == 3
assert not sig.has_vararg()
assert not sig.has_kwarg()
assert sig.scope_length() == 3
assert sig.getallvarnames() == ["a", "b", "c"]
sig = Signature(["a", "b", "c"], "c", None)
assert sig.num_argnames() == 3
assert sig.has_vararg()
assert not sig.has_kwarg()
assert sig.scope_length() == 4
assert sig.getallvarnames() == ["a", "b", "c", "c"]
sig = Signature(["a", "b", "c"], None, "c")
assert sig.num_argnames() == 3
assert not sig.has_vararg()
assert sig.has_kwarg()
assert sig.scope_length() == 4
assert sig.getallvarnames() == ["a", "b", "c", "c"]
sig = Signature(["a", "b", "c"], "d", "c")
assert sig.num_argnames() == 3
assert sig.has_vararg()
assert sig.has_kwarg()
assert sig.scope_length() == 5
assert sig.getallvarnames() == ["a", "b", "c", "d", "c"]
def test_find_argname(self):
sig = Signature(["a", "b", "c"], None, None)
assert sig.find_argname("a") == 0
assert sig.find_argname("b") == 1
assert sig.find_argname("c") == 2
assert sig.find_argname("d") == -1
def test_tuply(self):
sig = Signature(["a", "b", "c"], "d", "e")
x, y, z = sig
assert x == ["a", "b", "c"]
assert y == "d"
assert z == "e"
def test_helpers(self):
sig = Signature(["a", "b", "c"], None, None)
assert sig.num_argnames() == 3
assert not sig.has_vararg()
assert not sig.has_kwarg()
assert sig.scope_length() == 3
assert sig.getallvarnames() == ["a", "b", "c"]
sig = Signature(["a", "b", "c"], "c", None)
assert sig.num_argnames() == 3
assert sig.has_vararg()
assert not sig.has_kwarg()
assert sig.scope_length() == 4
assert sig.getallvarnames() == ["a", "b", "c", "c"]
sig = Signature(["a", "b", "c"], None, "c")
assert sig.num_argnames() == 3
assert not sig.has_vararg()
assert sig.has_kwarg()
assert sig.scope_length() == 4
assert sig.getallvarnames() == ["a", "b", "c", "c"]
sig = Signature(["a", "b", "c"], "d", "c")
assert sig.num_argnames() == 3
assert sig.has_vararg()
assert sig.has_kwarg()
assert sig.scope_length() == 5
assert sig.getallvarnames() == ["a", "b", "c", "d", "c"]
def test_find_argname(self):
sig = Signature(["a", "b", "c"], None, None)
assert sig.find_argname("a") == 0
assert sig.find_argname("b") == 1
assert sig.find_argname("c") == 2
assert sig.find_argname("d") == -1
def test_eq(self):
sig1 = Signature(["a", "b", "c"], "d", "c")
sig2 = Signature(["a", "b", "c"], "d", "c")
assert sig1 == sig2
