def _analyzeGens(top, absnames):
genlist = []
for g in top:
if isinstance(g, _UserCode):
tree = g
elif isinstance(g, (_AlwaysComb, _AlwaysSeq, _Always)):
f = g.func
s = inspect.getsource(f)
s = _dedent(s)
tree = ast.parse(s)
#print ast.dump(tree)
tree.sourcefile = inspect.getsourcefile(f)
tree.lineoffset = inspect.getsourcelines(f)[1]-1
tree.symdict = f.func_globals.copy()
tree.callstack = []
# handle free variables
tree.nonlocaldict = {}
if f.func_code.co_freevars:
for n, c in zip(f.func_code.co_freevars, f.func_closure):
obj = _cell_deref(c)
if isinstance(g, _AlwaysComb):
if not ( isinstance(obj, (int, long, EnumType,_Signal)) or \
_isMem(obj) or _isTupleOfInts(obj)
):
info = "File %s, line %s: " % (tree.sourcefile, tree.lineoffset)
print type(obj)
raise ConversionError(_error.UnsupportedType, n, info)
tree.symdict[n] = obj
# currently, only intbv as automatic nonlocals (until Python 3.0)
if isinstance(obj, intbv):
tree.nonlocaldict[n] = obj
tree.name = absnames.get(id(g), str(_Label("BLOCK"))).upper()
v = _FirstPassVisitor(tree)
v.visit(tree)
if isinstance(g, _AlwaysComb):
v = _AnalyzeAlwaysCombVisitor(tree, g.senslist)
elif isinstance(g, _AlwaysSeq):
v = _AnalyzeAlwaysSeqVisitor(tree, g.senslist, g.reset, g.sigregs, g.varregs)
else:
v = _AnalyzeAlwaysDecoVisitor(tree, g.senslist)
v.visit(tree)
else: # @instance
f = g.gen.gi_frame
s = inspect.getsource(f)
s = _dedent(s)
tree = ast.parse(s)
# print ast.dump(tree)
tree.sourcefile = inspect.getsourcefile(f)
tree.lineoffset = inspect.getsourcelines(f)[1]-1
tree.symdict = f.f_globals.copy()
tree.symdict.update(f.f_locals)
tree.nonlocaldict = {}
tree.callstack = []
tree.name = absnames.get(id(g), str(_Label("BLOCK"))).upper()
v = _FirstPassVisitor(tree)
v.visit(tree)
v = _AnalyzeBlockVisitor(tree)
v.visit(tree)
genlist.append(tree)
return genlist
def _makeAST(f):
s = inspect.getsource(f)
s = _dedent(s)
tree = ast.parse(s)
tree.sourcefile = inspect.getsourcefile(f)
tree.lineoffset = inspect.getsourcelines(f)[1]-1
return tree
def _makeAST(f):
s = inspect.getsource(f)
s = _dedent(s)
tree = ast.parse(s)
tree.sourcefile = inspect.getsourcefile(f)
tree.lineoffset = inspect.getsourcelines(f)[1]-1
return tree
def __init__(self, func, symdict):
self.func = func
self.symdict = symdict
s = inspect.getsource(func)
s = _dedent(s)
tree = ast.parse(s)
# print ast.dump(tree)
v = _AttrRefTransformer(self)
v.visit(tree)
v = _SigNameVisitor(self.symdict)
v.visit(tree)
self.inputs = v.inputs
self.outputs = v.outputs
senslist = []
for n in self.inputs:
s = self.symdict[n]
if isinstance(s, _Signal):
senslist.append(s)
else: # list of sigs
senslist.extend(s)
self.senslist = tuple(senslist)
self.gen = self.genfunc()
if len(self.senslist) == 0:
raise AlwaysCombError(_error.EmptySensitivityList)
if len(self.senslist) == 1:
W = _SignalWaiter
else:
W = _SignalTupleWaiter
self.waiter = W(self.gen)
def __init__(self, func, symdict):
self.symdict = symdict
s = inspect.getsource(func)
s = _dedent(s)
tree = ast.parse(s)
# print ast.dump(tree)
v = _AttrRefTransformer(self)
v.visit(tree)
v = _SigNameVisitor(self.symdict)
v.visit(tree)
self.inputs = v.results["input"]
self.outputs = v.results["output"]
inouts = v.results["inout"] | self.inputs.intersection(self.outputs)
if inouts:
raise AlwaysCombError(_error.SignalAsInout % inouts)
if v.results["embedded_func"]:
raise AlwaysCombError(_error.EmbeddedFunction)
senslist = []
for n in self.inputs:
s = self.symdict[n]
if isinstance(s, _Signal):
senslist.append(s)
elif _isListOfSigs(s):
senslist.extend(s)
self.senslist = tuple(senslist)
if len(self.senslist) == 0:
raise AlwaysCombError(_error.EmptySensitivityList)
super(_AlwaysComb, self).__init__(func, senslist)
def __init__(self, func):
senslist = []
super(_AlwaysComb, self).__init__(func, senslist)
s = inspect.getsource(func)
s = _dedent(s)
tree = ast.parse(s)
# print ast.dump(tree)
v = _AttrRefTransformer(self)
v.visit(tree)
v = _SigNameVisitor(self.symdict)
v.visit(tree)
self.inputs = v.results['input']
self.outputs = v.results['output']
inouts = v.results['inout'] | self.inputs.intersection(self.outputs)
if inouts:
raise AlwaysCombError(_error.SignalAsInout % inouts)
if v.results['embedded_func']:
raise AlwaysCombError(_error.EmbeddedFunction)
for n in self.inputs:
s = self.symdict[n]
if isinstance(s, _Signal):
senslist.append(s)
elif _isListOfSigs(s):
senslist.extend(s)
self.senslist = tuple(senslist)
if len(self.senslist) == 0:
raise AlwaysCombError(_error.EmptySensitivityList)
def __init__(self, func, symdict):
self.func = func
self.symdict = symdict
s = inspect.getsource(func)
s = _dedent(s)
tree = ast.parse(s)
# print ast.dump(tree)
v = _SigNameVisitor(symdict)
v.visit(tree)
self.inputs = v.inputs
self.outputs = v.outputs
senslist = []
for n in self.inputs:
s = self.symdict[n]
if isinstance(s, _Signal):
senslist.append(s)
else: # list of sigs
senslist.extend(s)
self.senslist = tuple(senslist)
self.gen = self.genfunc()
if len(self.senslist) == 0:
raise AlwaysCombError(_error.EmptySensitivityList)
if len(self.senslist) == 1:
W = _SignalWaiter
else:
W = _SignalTupleWaiter
self.waiter = W(self.gen)
def _inferWaiter(gen):
f = gen.gi_frame
s = inspect.getsource(f)
s = _dedent(s)
root = ast.parse(s)
root.symdict = f.f_globals.copy()
root.symdict.update(f.f_locals)
# print ast.dump(root)
v = _YieldVisitor(root)
v.visit(root)
if v.kind == _kind.EDGE_TUPLE:
return _EdgeTupleWaiter(gen)
if v.kind == _kind.SIGNAL_TUPLE:
return _SignalTupleWaiter(gen)
if v.kind == _kind.DELAY:
return _DelayWaiter(gen)
if v.kind == _kind.EDGE:
return _EdgeWaiter(gen)
if v.kind == _kind.SIGNAL:
return _SignalWaiter(gen)
# default
return _Waiter(gen)
def _inferWaiter(gen):
f = gen.gi_frame
s = inspect.getsource(f)
s = _dedent(s)
root = ast.parse(s)
root.symdict = f.f_globals.copy()
root.symdict.update(f.f_locals)
# print ast.dump(root)
v = _YieldVisitor(root)
v.visit(root)
if v.kind == _kind.EDGE_TUPLE:
return _EdgeTupleWaiter(gen)
if v.kind == _kind.SIGNAL_TUPLE:
return _SignalTupleWaiter(gen)
if v.kind == _kind.DELAY:
return _DelayWaiter(gen)
if v.kind == _kind.EDGE:
return _EdgeWaiter(gen)
if v.kind == _kind.SIGNAL:
return _SignalWaiter(gen)
# default
return _Waiter(gen)
for n, v in func.func_globals.items():
if n not in varnames:
symdict[n] = v
# handle free variables
if func.func_code.co_freevars:
for n, c in zip(func.func_code.co_freevars, func.func_closure):
try:
obj = _cell_deref(c)
symdict[n] = obj
except NameError:
raise NameError(n)
self.symdict = symdict
# now infer outputs to be reset
s = inspect.getsource(func)
s = _dedent(s)
tree = ast.parse(s)
# print ast.dump(tree)
v = _AttrRefTransformer(self)
v.visit(tree)
v = _SigNameVisitor(self.symdict)
v.visit(tree)
sigregs = self.sigregs = []
varregs = self.varregs = []
for n in v.outputs:
reg = self.symdict[n]
if isinstance(reg, _Signal):
sigregs.append(reg)
elif isinstance(reg, intbv):
varregs.append((n, reg, int(reg)))
else:
for n, v in func.__globals__.items():
if n not in varnames:
symdict[n] = v
# handle free variables
if func.__code__.co_freevars:
for n, c in zip(func.__code__.co_freevars, func.__closure__):
try:
obj = _cell_deref(c)
symdict[n] = obj
except NameError:
raise NameError(n)
self.symdict = symdict
# now infer outputs to be reset
s = inspect.getsource(func)
s = _dedent(s)
tree = ast.parse(s)
# print ast.dump(tree)
v = _AttrRefTransformer(self)
v.visit(tree)
v = _SigNameVisitor(self.symdict)
v.visit(tree)
if v.results['inout']:
raise AlwaysSeqError(_error.SigAugAssign, v.results['inout'])
if v.results['embedded_func']:
raise AlwaysSeqError(_error.EmbeddedFunction)
sigregs = self.sigregs = []
varregs = self.varregs = []
def visit_Call(self, node):
self.visit(node.func)
self.access = _access.UNKNOWN
for arg in node.args:
self.visit(arg)
for kw in node.keywords:
self.visit(kw)
self.access = _access.INPUT
argsAreInputs = True
f = self.getObj(node.func)
node.obj = None
if type(f) is type and issubclass(f, intbv):
node.obj = self.getVal(node)
elif f is concat:
node.obj = self.getVal(node)
elif f is len:
self.access = _access.UNKNOWN
node.obj = int(0) # XXX
elif f is bool:
node.obj = bool()
elif f in (int, long, ord):
node.obj = int(-1)
## elif f in (posedge , negedge):
## node.obj = _EdgeDetector()
elif f is delay:
node.obj = delay(0)
### suprize: identity comparison on unbound methods doesn't work in python 2.5??
elif f == intbv.signed:
node.obj = int(-1)
elif f in myhdlObjects:
pass
elif f in builtinObjects:
pass
elif type(f) is FunctionType:
argsAreInputs = False
s = inspect.getsource(f)
s = _dedent(s)
tree = ast.parse(s)
# print ast.dump(tree)
# print tree
fname = f.__name__
tree.name = _Label(fname)
tree.sourcefile = inspect.getsourcefile(f)
tree.lineoffset = inspect.getsourcelines(f)[1]-1
tree.symdict = f.func_globals.copy()
tree.nonlocaldict = {}
if fname in self.tree.callstack:
self.raiseError(node, _error.NotSupported, "Recursive call")
tree.callstack = self.tree.callstack[:]
tree.callstack.append(fname)
# handle free variables
if f.func_code.co_freevars:
for n, c in zip(f.func_code.co_freevars, f.func_closure):
obj = _cell_deref(c)
if not isinstance(obj, (int, long, _Signal)):
self.raiseError(node, _error.FreeVarTypeError, n)
tree.symdict[n] = obj
v = _FirstPassVisitor(tree)
v.visit(tree)
v = _AnalyzeFuncVisitor(tree, node.args, node.keywords)
v.visit(tree)
node.obj = tree.returnObj
node.tree = tree
tree.argnames = argnames = [arg.id for arg in tree.body[0].args.args]
# extend argument list with keyword arguments on the correct position
node.args.extend([None]*len(node.keywords))
for kw in node.keywords:
node.args[argnames.index(kw.arg)] = kw.value
for n, arg in zip(argnames, node.args):
if n in tree.outputs:
self.access = _access.OUTPUT
self.visit(arg)
self.access = _access.INPUT
if n in tree.inputs:
self.visit(arg)
elif type(f) is MethodType:
self.raiseError(node,_error.NotSupported, "method call: '%s'" % f.__name__)
else:
debug_info = [e for e in ast.iter_fields(node.func)]
raise AssertionError("Unexpected callable %s" % str(debug_info))
if argsAreInputs:
for arg in node.args:
self.visit(arg)
def visit_Call(self, node):
self.visit(node.func)
self.access = _access.UNKNOWN
for arg in node.args:
self.visit(arg)
for kw in node.keywords:
self.visit(kw)
self.access = _access.INPUT
argsAreInputs = True
f = self.getObj(node.func)
node.obj = None
if type(f) is type and issubclass(f, intbv):
node.obj = self.getVal(node)
elif f is concat:
node.obj = self.getVal(node)
elif f is len:
self.access = _access.UNKNOWN
node.obj = int(0) # XXX
elif f is bool:
node.obj = bool()
elif f in (int, long, ord):
node.obj = int(-1)
## elif f in (posedge , negedge):
## node.obj = _EdgeDetector()
elif f is delay:
node.obj = delay(0)
### suprize: identity comparison on unbound methods doesn't work in python 2.5??
elif f == intbv.signed:
node.obj = int(-1)
elif f in myhdlObjects:
pass
elif f in builtinObjects:
pass
elif type(f) is FunctionType:
argsAreInputs = False
s = inspect.getsource(f)
s = _dedent(s)
tree = ast.parse(s)
# print ast.dump(tree)
# print tree
fname = f.__name__
tree.name = _Label(fname)
tree.sourcefile = inspect.getsourcefile(f)
tree.lineoffset = inspect.getsourcelines(f)[1]-1
tree.symdict = f.func_globals.copy()
tree.nonlocaldict = {}
if fname in self.tree.callstack:
self.raiseError(node, _error.NotSupported, "Recursive call")
tree.callstack = self.tree.callstack[:]
tree.callstack.append(fname)
# handle free variables
if f.func_code.co_freevars:
for n, c in zip(f.func_code.co_freevars, f.func_closure):
obj = _cell_deref(c)
if not isinstance(obj, (int, long, _Signal)):
self.raiseError(node, _error.FreeVarTypeError, n)
tree.symdict[n] = obj
v = _FirstPassVisitor(tree)
v.visit(tree)
v = _AnalyzeFuncVisitor(tree, node.args, node.keywords)
v.visit(tree)
node.obj = tree.returnObj
node.tree = tree
tree.argnames = argnames = [arg.id for arg in tree.body[0].args.args]
# extend argument list with keyword arguments on the correct position
node.args.extend([None]*len(node.keywords))
for kw in node.keywords:
node.args[argnames.index(kw.arg)] = kw.value
for n, arg in zip(argnames, node.args):
if n in tree.outputs:
self.access = _access.OUTPUT
self.visit(arg)
self.access = _access.INPUT
if n in tree.inputs:
self.visit(arg)
elif type(f) is MethodType:
self.raiseError(node,_error.NotSupported, "method call: '%s'" % f.__name__)
else:
debug_info = [e for e in ast.iter_fields(node.func)]
raise AssertionError("Unexpected callable %s" % str(debug_info))
if argsAreInputs:
for arg in node.args:
self.visit(arg)
def __init__(self, func):
def senslistexpand(senslist, reg):
# print(repr(reg))
if isinstance(reg, _Signal):
senslist.append(reg)
elif isinstance(reg, StructType):
# print('senslistexpand StructType', repr(reg))
refs = vars(reg)
# print(refs)
for k in refs:
# print(refs[k])
if isinstance(refs[k], _Signal):
senslist.append(refs[k])
elif isinstance(refs[k], (list, Array)):
if len(refs[k]) != 0:
senslistexpand(senslist, refs[k])
elif isinstance(refs[k], StructType):
senslistexpand(senslist, refs[k])
else:
# print('senslistexpand passing {}?'.format(k))
pass
elif isinstance(reg, (list, Array)):
if isinstance(reg[0], (list, Array)):
for r in reg:
senslistexpand(senslist, r)
else:
if isinstance(reg[0], StructType):
for rr in reg:
senslistexpand(senslist, rr)
elif isinstance(reg[0], _Signal):
senslist.extend(reg)
# elif isinstance(reg, Array):
# senslist.extend(reg._array)
# elif isinstance(reg, list):
# senslist.extend(reg)
# self.func = func
# self.symdict = symdict
senslist = []
super(_AlwaysComb, self).__init__(func, senslist)
# print('_AlwaysComb', senslist)
s = inspect.getsource(func)
s = _dedent(s)
tree = ast.parse(s)
# print(ast.dump(tree))
# for item in ast.dump(tree).split():
# print(item)
v = _AttrRefTransformer(self)
v.visit(tree)
# print(ast.dump(tree))
# for item in ast.dump(tree).split():
# print(item)
v = _SigNameVisitor(self.symdict)
v.visit(tree)
# print(ast.dump(tree))
# for item in ast.dump(tree).split():
# print(item)
self.inputs = v.results['input']
self.outputs = v.results['output']
# print(v.results)
# print('inputs:', self.inputs)
# print('outputs:', self.outputs)
# inouts = v.results['inout'] | self.inputs.intersection(self.outputs)
# if inouts:
# raise AlwaysCombError(_error.SignalAsInout % inouts)
if v.results['embedded_func']:
raise AlwaysCombError(_error.EmbeddedFunction)
# print(self.inputs)
# print('2', self.senslist)
for n in self.inputs:
s = self.symdict[n]
# print(n,s)
# print(n, s, isinstance(s, StructType), isinstance(s, (list, Array)))
senslistexpand(senslist, s)
# if isinstance(s, _Signal):
# senslist.append(s)
# elif isinstance(s, list):
# # print(repr(s))
# # list or Array of sigs
# senslistexpand(senslist, s)
# elif isinstance(s, Array):
# # Array of sigs
# if not isinstance(s.element, intbv):
# senslistexpand(senslist, s)
# elif isinstance(s, StructType):
# senslistexpand(senslist, s)
# elif _isListOfSigs(s):
# senslist.extend(s)
# else :
# # print('_always_comb', n)
# pass
# print('3', self.senslist)
self.senslist = tuple(senslist)
# print('4', self.senslist)
self.gen = self.genfunc()
# for item in self.senslist:
# print(item._name, repr(item))
# print()
if len(self.senslist) == 0:
raise AlwaysCombError(_error.EmptySensitivityList)