def compute_anti_dependences(self):
"""Return a dictionnary of anti dependencies for design unit"""
res = {}
lib = libraries.Get_Libraries_Chain()
while lib != nodes.Null_Iir:
files = nodes.Get_Design_File_Chain(lib)
while files != nodes.Null_Iir:
units = nodes.Get_First_Design_Unit(files)
while units != nodes.Null_Iir:
if nodes.Get_Date_State(units) == nodes.Date_State.Analyze:
# The unit has been analyzed, so the dependencies are know.
deps = nodes.Get_Dependence_List(units)
assert deps != nodes.Null_Iir_List
deps_it = lists.Iterate(deps)
while lists.Is_Valid(byref(deps_it)):
el = lists.Get_Element(byref(deps_it))
if nodes.Get_Kind(
el) == nodes.Iir_Kind.Design_Unit:
if res.get(el, None):
res[el].append(units)
else:
res[el] = [units]
else:
assert False
lists.Next(byref(deps_it))
units = nodes.Get_Chain(units)
files = nodes.Get_Chain(files)
lib = nodes.Get_Chain(lib)
return res
def GetParameterFromChainedNodes(
nodeChain: Iir, ) -> Generator[ParameterInterfaceItem, None, None]:
parameter = nodeChain
while parameter != nodes.Null_Iir:
kind = GetIirKindOfNode(parameter)
if kind == nodes.Iir_Kind.Interface_Constant_Declaration:
from pyGHDL.dom.InterfaceItem import ParameterConstantInterfaceItem
param = ParameterConstantInterfaceItem.parse(parameter)
elif kind == nodes.Iir_Kind.Interface_Variable_Declaration:
from pyGHDL.dom.InterfaceItem import ParameterVariableInterfaceItem
param = ParameterVariableInterfaceItem.parse(parameter)
elif kind == nodes.Iir_Kind.Interface_Signal_Declaration:
from pyGHDL.dom.InterfaceItem import ParameterSignalInterfaceItem
param = ParameterSignalInterfaceItem.parse(parameter)
elif kind == nodes.Iir_Kind.Interface_File_Declaration:
from pyGHDL.dom.InterfaceItem import ParameterFileInterfaceItem
param = ParameterFileInterfaceItem.parse(parameter)
else:
position = Position.parse(parameter)
raise DOMException(
"Unknown parameter kind '{kind}' in parameter '{param}' at {file}:{line}:{column}."
.format(
kind=kind.name,
param=parameter,
file=position.Filename,
line=position.Line,
column=position.Column,
))
# Lookahead for parameters with multiple identifiers at once
if nodes.Get_Has_Identifier_List(parameter):
nextNode = nodes.Get_Chain(parameter)
for nextParameter in utils.chain_iter(nextNode):
# Consecutive identifiers are found, if the subtype indication is Null
if nodes.Get_Subtype_Indication(
nextParameter) == nodes.Null_Iir:
param.Identifiers.append(GetNameOfNode(nextParameter))
else:
parameter = nextParameter
break
# The last consecutive identifiers has no Identifier_List flag
if not nodes.Get_Has_Identifier_List(nextParameter):
parameter = nodes.Get_Chain(nextParameter)
break
else:
parameter = nodes.Null_Iir
else:
parameter = nodes.Get_Chain(parameter)
yield param
def parse(self):
unit = nodes.Get_First_Design_Unit(self.__ghdlFile)
while unit != nodes.Null_Iir:
libraryUnit = nodes.Get_Library_Unit(unit)
nodeKind = nodes.Get_Kind(libraryUnit)
if (nodeKind == nodes.Iir_Kind.Entity_Declaration):
entity = Entity.parse(libraryUnit)
self.Entities.append(entity)
elif (nodeKind == nodes.Iir_Kind.Architecture_Body):
architecture = Architecture.parse(libraryUnit)
self.Architectures.append(architecture)
elif (nodeKind == nodes.Iir_Kind.Package_Declaration):
package = Package.parse(libraryUnit)
self.Packages.append(package)
elif (nodeKind == nodes.Iir_Kind.Package_Body):
packageBody = PackageBody.parse(libraryUnit)
self.PackageBodies.append(packageBody)
elif (nodeKind == nodes.Iir_Kind.Context_Declaration):
context = Context.parse(libraryUnit)
self.Contexts.append(context)
elif (nodeKind == nodes.Iir_Kind.Configuration_Declaration):
configuration = Configuration.parse(libraryUnit)
self.Configurations.append(configuration)
else:
raise GHDLException("Unknown design unit kind.")
unit = nodes.Get_Chain(unit)
def find_def_chain(first, loc):
n1 = first
while n1 != nodes.Null_Iir:
res = find_def(n1, loc)
if res is not None:
return res
n1 = nodes.Get_Chain(n1)
return None
def GetPortsFromChainedNodes(
nodeChain: Iir, ) -> Generator[PortInterfaceItem, None, None]:
port = nodeChain
while port != nodes.Null_Iir:
kind = GetIirKindOfNode(port)
if kind == nodes.Iir_Kind.Interface_Signal_Declaration:
from pyGHDL.dom.InterfaceItem import PortSignalInterfaceItem
portSignal = PortSignalInterfaceItem.parse(port)
# Lookahead for ports with multiple identifiers at once
if nodes.Get_Has_Identifier_List(port):
nextNode = nodes.Get_Chain(port)
for nextPort in utils.chain_iter(nextNode):
# Consecutive identifiers are found, if the subtype indication is Null
if nodes.Get_Subtype_Indication(
nextPort) == nodes.Null_Iir:
portSignal.Identifiers.append(GetNameOfNode(nextPort))
else:
port = nextPort
break
# The last consecutive identifiers has no Identifier_List flag
if not nodes.Get_Has_Identifier_List(nextPort):
port = nodes.Get_Chain(nextPort)
break
else:
port = nodes.Null_Iir
else:
port = nodes.Get_Chain(port)
yield portSignal
continue
else:
position = Position.parse(port)
raise DOMException(
"Unknown port kind '{kind}' in port '{port}' at {file}:{line}:{column}."
.format(
kind=kind.name,
port=port,
file=position.Filename,
line=position.Line,
column=position.Column,
))
def create_interfaces(inters):
res = []
while inters != nodes.Null_Iir:
res.append({
"name":
name_table.Get_Name_Ptr(nodes.Get_Identifier(inters))
})
inters = nodes.Get_Chain(inters)
return res
def sequential_iter(n) -> Generator[Any, None, None]:
"""
Iterate sequential statements. The first node must be either
a process or a subprogram body.
"""
if n == nodes.Null_Iir:
return
k = nodes.Get_Kind(n)
if k in (
nodes.Iir_Kind.Process_Statement,
nodes.Iir_Kind.Sensitized_Process_Statement,
nodes.Iir_Kind.Function_Body,
nodes.Iir_Kind.Procedure_Body,
):
for n1 in chain_iter(nodes.Get_Sequential_Statement_Chain(n)):
yield n1
for n2 in sequential_iter(n1):
yield n2
elif k == nodes.Iir_Kind.If_Statement:
while True:
n = nodes.Get_Chain(n)
if n == nodes.Null_Iir:
break
yield n
for n1 in sequential_iter(n):
yield n1
elif k == nodes.Iir_Kind.Case_Statement:
for ch in chain_iter(nodes.Get_Case_Statement_Alternative_Chain(n)):
stmt = nodes.Get_Associated_Chain(ch)
if stmt != nodes.Null_Iir:
for n1 in chain_iter(stmt):
yield n1
for n2 in sequential_iter(n1):
yield n2
elif k in [
nodes.Iir_Kind.For_Loop_Statement,
nodes.Iir_Kind.While_Loop_Statement
]:
for n1 in chain_iter(nodes.Get_Sequential_Statement_Chain(n)):
yield n1
for n2 in sequential_iter(n1):
yield n2
elif k in (
nodes.Iir_Kind.Assertion_Statement,
nodes.Iir_Kind.Wait_Statement,
nodes.Iir_Kind.Null_Statement,
nodes.Iir_Kind.Exit_Statement,
nodes.Iir_Kind.Next_Statement,
nodes.Iir_Kind.Return_Statement,
nodes.Iir_Kind.Variable_Assignment_Statement,
nodes.Iir_Kind.Simple_Signal_Assignment_Statement,
nodes.Iir_Kind.Procedure_Call_Statement,
):
return
else:
raise Exception("Unknown node of kind {}".format(kind_image(k)))
def x_get_all_entities(self):
res = []
lib = libraries.Get_Libraries_Chain()
while lib != nodes.Null_Iir:
files = nodes.Get_Design_File_Chain(lib)
ents = []
while files != nodes.Null_Iir:
units = nodes.Get_First_Design_Unit(files)
while units != nodes.Null_Iir:
unitlib = nodes.Get_Library_Unit(units)
if nodes.Get_Kind(
unitlib) == nodes.Iir_Kind.Entity_Declaration:
ents.append(unitlib)
units = nodes.Get_Chain(units)
files = nodes.Get_Chain(files)
ents = [pyutils.name_image(nodes.Get_Identifier(e)) for e in ents]
lib_name = pyutils.name_image(nodes.Get_Identifier(lib))
res.extend([{"name": n, "library": lib_name} for n in ents])
lib = nodes.Get_Chain(lib)
return res
def compute_diags(self):
log.debug("parse doc %d %s", self._fe, self.uri)
self.parse_document()
if self._tree == nodes.Null_Iir:
# No units, nothing to add.
return
# Semantic analysis.
unit = nodes.Get_First_Design_Unit(self._tree)
while unit != nodes.Null_Iir:
sem.Semantic(unit)
nodes.Set_Date_State(unit, nodes.Date_State.Analyze)
unit = nodes.Get_Chain(unit)
def test_InitializeGHDL(self) -> None:
"""Initialization: set options and then load libaries."""
libghdl.initialize()
# Print error messages on the console.
errorout_console.Install_Handler()
# Set options. This must be done before analyze_init()
libghdl.set_option("--std=08")
# Finish initialization. This will load the standard package.
if libghdl.analyze_init_status() != 0:
self.fail("libghdl initialization error")
# Load the file
file_id = name_table.Get_Identifier(str(self._filename))
sfe = files_map.Read_Source_File(name_table.Null_Identifier, file_id)
if sfe == files_map.No_Source_File_Entry:
self.fail("Cannot read file '{!s}'".format(self._filename))
# Parse
file = sem_lib.Load_File(sfe)
# Display all design units
designUnit = nodes.Get_First_Design_Unit(file)
while designUnit != nodes.Null_Iir:
libraryUnit = nodes.Get_Library_Unit(designUnit)
if nodes.Get_Kind(
libraryUnit) == nodes.Iir_Kind.Entity_Declaration:
entityName = self.getIdentifier(libraryUnit)
self.assertEqual(
entityName,
"entity_1",
"expected entity name 'e1', got '{}'".format(entityName),
)
elif nodes.Get_Kind(
libraryUnit) == nodes.Iir_Kind.Architecture_Body:
architectureName = self.getIdentifier(libraryUnit)
self.assertEqual(
architectureName,
"behav",
"expected architecture name 'behav', got '{}'".format(
architectureName),
)
else:
self.fail("Unknown unit.")
designUnit = nodes.Get_Chain(designUnit)
def obsolete_doc(self, doc):
if doc._tree == nodes.Null_Iir:
return
# Free old tree
assert nodes.Get_Kind(doc._tree) == nodes.Iir_Kind.Design_File
if self._last_linted_doc == doc:
antideps = None
else:
antideps = self.compute_anti_dependences()
unit = nodes.Get_First_Design_Unit(doc._tree)
while unit != nodes.Null_Iir:
if antideps is not None:
self.obsolete_dependent_units(unit, antideps)
# FIXME: free unit; it is not referenced.
unit = nodes.Get_Chain(unit)
libraries.Purge_Design_File(doc._tree)
doc._tree = nodes.Null_Iir
def add_to_library(tree):
# Detach the chain of units.
unit = nodes.Get_First_Design_Unit(tree)
nodes.Set_First_Design_Unit(tree, nodes.Null_Iir)
# FIXME: free the design file ?
tree = nodes.Null_Iir
# Analyze unit after unit.
while unit != nodes.Null_Iir:
# Pop the first unit.
next_unit = nodes.Get_Chain(unit)
nodes.Set_Chain(unit, nodes.Null_Iir)
lib_unit = nodes.Get_Library_Unit(unit)
if lib_unit != nodes.Null_Iir and nodes.Get_Identifier(
unit) != name_table.Null_Identifier:
# Put the unit (only if it has a library unit) in the library.
libraries.Add_Design_Unit_Into_Library(unit, False)
tree = nodes.Get_Design_File(unit)
unit = next_unit
return tree
def nodes_iter(n) -> Generator[Any, None, None]:
"""
Iterate all nodes of :obj:`n`, including :obj:`n`.
Nodes are returned only once.
"""
if n == nodes.Null_Iir:
return
# print 'nodes_iter for {0}'.format(n)
yield n
for f in fields_iter(n):
typ = nodes_meta.get_field_type(f)
# print ' {0}: field {1} (type: {2})'.format(
# n, fields_image(f), types_image(typ))
if typ == nodes_meta.types.Iir:
attr = nodes_meta.get_field_attribute(f)
if attr == nodes_meta.Attr.ANone:
for n1 in nodes_iter(nodes_meta.Get_Iir(n, f)):
yield n1
elif attr == nodes_meta.Attr.Chain:
n2 = nodes_meta.Get_Iir(n, f)
while n2 != nodes.Null_Iir:
for n1 in nodes_iter(n2):
yield n1
n2 = nodes.Get_Chain(n2)
elif attr == nodes_meta.Attr.Maybe_Ref:
if not nodes.Get_Is_Ref(n, f):
for n1 in nodes_iter(nodes_meta.Get_Iir(n, f)):
yield n1
elif typ == nodes_meta.types.Iir_List:
attr = nodes_meta.get_field_attribute(f)
if attr == nodes_meta.Attr.ANone:
for n1 in list_iter(nodes_meta.Get_Iir_List(n, f)):
for n2 in nodes_iter(n1):
yield n2
elif typ == nodes_meta.types.Iir_Flist:
attr = nodes_meta.get_field_attribute(f)
if attr == nodes_meta.Attr.ANone:
for n1 in flist_iter(nodes_meta.Get_Iir_Flist(n, f)):
for n2 in nodes_iter(n1):
yield n2
def parse(cls, caseNode: Iir, label: str) -> "CaseStatement":
from pyGHDL.dom._Utils import GetIirKindOfNode
from pyGHDL.dom._Translate import (
GetExpressionFromNode,
GetRangeFromNode,
GetNameFromNode,
)
expression = GetExpressionFromNode(nodes.Get_Expression(caseNode))
cases = []
choices = None
alternative = nodes.Get_Case_Statement_Alternative_Chain(caseNode)
cNode = alternative
while alternative != nodes.Null_Iir:
choiceKind = GetIirKindOfNode(alternative)
sameAlternative = nodes.Get_Same_Alternative_Flag(alternative)
if choiceKind in (
nodes.Iir_Kind.Choice_By_Name,
nodes.Iir_Kind.Choice_By_Expression,
):
choiceExpression = GetExpressionFromNode(nodes.Get_Choice_Expression(alternative))
choice = IndexedChoice(alternative, choiceExpression)
if sameAlternative:
choices.append(choice)
alternative = nodes.Get_Chain(alternative)
continue
elif choiceKind is nodes.Iir_Kind.Choice_By_Range:
choiceRange = nodes.Get_Choice_Range(alternative)
choiceRangeKind = GetIirKindOfNode(choiceRange)
if choiceRangeKind == nodes.Iir_Kind.Range_Expression:
rng = GetRangeFromNode(choiceRange)
elif choiceRangeKind in (
nodes.Iir_Kind.Attribute_Name,
nodes.Iir_Kind.Parenthesis_Name,
):
rng = GetNameFromNode(choiceRange)
else:
pos = Position.parse(alternative)
raise DOMException(
"Unknown choice range kind '{kind}' in case statement at line {line}.".format(
kind=choiceRangeKind.name, line=pos.Line
)
)
choice = RangedChoice(alternative, rng)
if sameAlternative:
choices.append(choice)
alternative = nodes.Get_Chain(alternative)
continue
elif choiceKind is nodes.Iir_Kind.Choice_By_Others:
if choices is not None:
cases.append(Case.parse(alternative, choices, label))
choices = None
cases.append(OthersCase.parse(alternative, label))
alternative = nodes.Get_Chain(alternative)
cNode = alternative
continue
else:
pos = Position.parse(alternative)
raise DOMException(
"Unknown choice kind '{kind}' in case statement at line {line}.".format(
kind=choiceKind.name, line=pos.Line
)
)
if choices is not None:
cases.append(Case.parse(cNode, choices, label))
cNode = alternative
choices = [
choice,
]
alternative = nodes.Get_Chain(alternative)
if choices is not None:
cases.append(Case.parse(cNode, choices, label))
return cls(caseNode, label, expression, cases)
def GetDeclaredItemsFromChainedNodes(
nodeChain: Iir, entity: str,
name: str) -> Generator[ModelEntity, None, None]:
item = nodeChain
lastKind = None
while item != nodes.Null_Iir:
kind = GetIirKindOfNode(item)
if kind == nodes.Iir_Kind.Constant_Declaration:
from pyGHDL.dom.Object import Constant
obj = Constant.parse(item)
elif kind == nodes.Iir_Kind.Variable_Declaration:
from pyGHDL.dom.Object import SharedVariable
if nodes.Get_Shared_Flag(item):
obj = SharedVariable.parse(item)
else:
obj = Variable.parse(item)
elif kind == nodes.Iir_Kind.Signal_Declaration:
from pyGHDL.dom.Object import Signal
obj = Signal.parse(item)
elif kind == nodes.Iir_Kind.File_Declaration:
from pyGHDL.dom.Object import File
obj = File.parse(item)
else:
if kind == nodes.Iir_Kind.Type_Declaration:
yield GetTypeFromNode(item)
elif kind == nodes.Iir_Kind.Anonymous_Type_Declaration:
yield GetAnonymousTypeFromNode(item)
elif kind == nodes.Iir_Kind.Subtype_Declaration:
yield GetSubtypeFromNode(item)
elif kind == nodes.Iir_Kind.Function_Declaration:
if nodes.Get_Has_Body(item):
yield Function.parse(item)
else:
print(
"[NOT IMPLEMENTED] function declaration without body")
lastKind = kind
item = nodes.Get_Chain(item)
continue
elif kind == nodes.Iir_Kind.Function_Body:
if lastKind is nodes.Iir_Kind.Function_Declaration:
pass
else:
position = Position.parse(item)
raise DOMException(
"Found unexpected function body '{functionName}' in {entity} '{name}' at {file}:{line}:{column}."
.format(
functionName=GetNameOfNode(item),
entity=entity,
name=name,
file=position.Filename,
line=position.Line,
column=position.Column,
))
elif kind == nodes.Iir_Kind.Procedure_Declaration:
if nodes.Get_Has_Body(item):
yield Procedure.parse(item)
else:
print(
"[NOT IMPLEMENTED] procedure declaration without body")
lastKind = kind
item = nodes.Get_Chain(item)
continue
elif kind == nodes.Iir_Kind.Procedure_Body:
if lastKind is nodes.Iir_Kind.Procedure_Declaration:
pass
else:
position = Position.parse(item)
raise DOMException(
"Found unexpected procedure body '{functionName}' in {entity} '{name}' at {file}:{line}:{column}."
.format(
functionName=GetNameOfNode(item),
entity=entity,
name=name,
file=position.Filename,
line=position.Line,
column=position.Column,
))
elif kind == nodes.Iir_Kind.Protected_Type_Body:
yield ProtectedTypeBody.parse(item)
elif kind == nodes.Iir_Kind.Object_Alias_Declaration:
yield GetAliasFromNode(item)
elif kind == nodes.Iir_Kind.Component_Declaration:
from pyGHDL.dom.DesignUnit import Component
yield Component.parse(item)
elif kind == nodes.Iir_Kind.Attribute_Declaration:
from pyGHDL.dom.Attribute import Attribute
yield Attribute.parse(item)
elif kind == nodes.Iir_Kind.Attribute_Specification:
from pyGHDL.dom.Attribute import AttributeSpecification
yield AttributeSpecification.parse(item)
elif kind == nodes.Iir_Kind.Use_Clause:
from pyGHDL.dom.DesignUnit import UseClause
yield UseClause.parse(item)
elif kind == nodes.Iir_Kind.Package_Declaration:
from pyGHDL.dom.DesignUnit import Package
yield Package.parse(item, None) # TODO: Can it have a context?
elif kind == nodes.Iir_Kind.Package_Instantiation_Declaration:
from pyGHDL.dom.DesignUnit import PackageInstantiation
yield PackageInstantiation.parse(item)
elif kind == nodes.Iir_Kind.Configuration_Specification:
print(
"[NOT IMPLEMENTED] Configuration specification in {name}".
format(name=name))
elif kind == nodes.Iir_Kind.Psl_Default_Clock:
yield DefaultClock.parse(item)
elif kind == nodes.Iir_Kind.Group_Declaration:
print("[NOT IMPLEMENTED] Group declaration in {name}".format(
name=name))
elif kind == nodes.Iir_Kind.Group_Template_Declaration:
print("[NOT IMPLEMENTED] Group template declaration in {name}".
format(name=name))
elif kind == nodes.Iir_Kind.Disconnection_Specification:
print("[NOT IMPLEMENTED] Disconnect specification in {name}".
format(name=name))
else:
position = Position.parse(item)
raise DOMException(
"Unknown declared item kind '{kind}' in {entity} '{name}' at {file}:{line}:{column}."
.format(
kind=kind.name,
entity=entity,
name=name,
file=position.Filename,
line=position.Line,
column=position.Column,
))
lastKind = None
item = nodes.Get_Chain(item)
continue
# Lookahead for objects with multiple identifiers at once
if nodes.Get_Has_Identifier_List(item):
nextNode = nodes.Get_Chain(item)
for nextItem in utils.chain_iter(nextNode):
# Consecutive identifiers are found, if the subtype indication is Null
if nodes.Get_Subtype_Indication(nextItem) == nodes.Null_Iir:
obj.Identifiers.append(GetNameOfNode(nextItem))
else:
item = nextItem
break
# The last consecutive identifiers has no Identifier_List flag
if not nodes.Get_Has_Identifier_List(nextItem):
item = nodes.Get_Chain(nextItem)
break
else:
item = nodes.Null_Iir
else:
item = nodes.Get_Chain(item)
yield obj
def chain_iter(n) -> Generator[Any, None, None]:
"""Iterate of a chain headed by node :obj:`n`."""
while n != nodes.Null_Iir:
yield n
n = nodes.Get_Chain(n)
def GetGenericsFromChainedNodes(
nodeChain: Iir, ) -> Generator[GenericInterfaceItem, None, None]:
from pyGHDL.dom.InterfaceItem import (
GenericTypeInterfaceItem,
GenericPackageInterfaceItem,
GenericProcedureInterfaceItem,
GenericFunctionInterfaceItem,
)
generic = nodeChain
while generic != nodes.Null_Iir:
kind = GetIirKindOfNode(generic)
if kind == nodes.Iir_Kind.Interface_Constant_Declaration:
from pyGHDL.dom.InterfaceItem import GenericConstantInterfaceItem
genericConstant = GenericConstantInterfaceItem.parse(generic)
# Lookahead for generics with multiple identifiers at once
if nodes.Get_Has_Identifier_List(generic):
nextNode = nodes.Get_Chain(generic)
for nextGeneric in utils.chain_iter(nextNode):
# Consecutive identifiers are found, if the subtype indication is Null
if nodes.Get_Subtype_Indication(
nextGeneric) == nodes.Null_Iir:
genericConstant.Identifiers.append(
GetNameOfNode(nextGeneric))
else:
generic = nextGeneric
break
# The last consecutive identifiers has no Identifier_List flag
if not nodes.Get_Has_Identifier_List(nextGeneric):
generic = nodes.Get_Chain(nextGeneric)
break
else:
generic = nodes.Null_Iir
else:
generic = nodes.Get_Chain(generic)
yield genericConstant
continue
else:
if kind == nodes.Iir_Kind.Interface_Type_Declaration:
yield GenericTypeInterfaceItem.parse(generic)
elif kind == nodes.Iir_Kind.Interface_Package_Declaration:
yield GenericPackageInterfaceItem.parse(generic)
elif kind == nodes.Iir_Kind.Interface_Procedure_Declaration:
yield GenericProcedureInterfaceItem.parse(generic)
elif kind == nodes.Iir_Kind.Interface_Function_Declaration:
yield GenericFunctionInterfaceItem.parse(generic)
else:
position = Position.parse(generic)
raise DOMException(
"Unknown generic kind '{kind}' in generic '{generic}' at {file}:{line}:{column}."
.format(
kind=kind.name,
generic=generic,
file=position.Filename,
line=position.Line,
column=position.Column,
))
generic = nodes.Get_Chain(generic)
