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from libghdl import libghdl
from ctypes import (c_char_p, c_int32)
import iirs
import nodes_meta
from nodes_meta import (Attr, types)
# from libghdl_defs import (fields, Iir_Kind, types, Attr)
# libghdl
_set_option = libghdl.libghdl__set_option
_analyze_file = libghdl.libghdl__analyze_file
def set_option(opt):
return _set_option(c_char_p(opt), len(opt))
def analyze_init():
return libghdl.libghdl__analyze_init()
def analyze_file(filename):
return _analyze_file(c_char_p(filename), len(filename))
# Lists
Get_Nbr_Elements = libghdl.lists__get_nbr_elements
Get_Nth_Element = libghdl.lists__get_nth_element
# Files
Location_To_File = libghdl.files_map__location_to_file
Location_File_To_Pos = libghdl.files_map__location_file_to_pos
Location_File_To_Line = libghdl.files_map__location_file_to_line
location_File_Line_To_Col = libghdl.files_map__location_file_line_to_col
Get_File_Buffer = libghdl.files_map__get_file_buffer
Get_File_Buffer.restype = c_char_p
# Names
Get_Name_Length = libghdl.name_table__get_name_length
# std.standard
Standard_Package = c_int32.in_dll(libghdl, "std_package__standard_package")
Null_Iir = 0
Null_Iir_List = 0
def _build_enum_image(cls):
d = [e for e in dir(cls) if e[0] != '_']
res = [None] * len(d)
for e in d:
res[getattr(cls, e)] = e
return res
_fields_image = _build_enum_image(nodes_meta.fields)
def fields_image(idx):
"""String representation of field idx"""
return _fields_image[idx]
_kind_image = _build_enum_image(iirs.Iir_Kind)
def kind_image(k):
"""String representation of Iir_Kind k"""
return _kind_image[k]
_types_image = _build_enum_image(nodes_meta.types)
def types_image(t):
"""String representation of Nodes_Meta.Types t"""
return _types_image[t]
_attr_image = _build_enum_image(nodes_meta.Attr)
def attr_image(a):
"""String representation of Nodes_Meta.Attr a"""
return _attr_image[a]
def fields_iter(n):
"""Iterate on fields of node n"""
if n == Null_Iir:
return
k = iirs.Get_Kind(n)
first = nodes_meta.get_fields_first(k)
last = nodes_meta.get_fields_last(k)
for i in range(first, last + 1):
yield nodes_meta.get_field_by_index(i)
def chain_iter(n):
"""Iterate of a chain headed by node n"""
while n != Null_Iir:
yield n
n = iirs.Get_Chain(n)
def nodes_iter(n):
"""Iterate of all nodes of n, including n.
Nodes are returned only once."""
if n == Null_Iir:
return
# print 'nodes_iter for {0}'.format(n)
yield n
chain_next = None
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 == Attr.ANone:
for n1 in nodes_iter(nodes_meta.Get_Iir(n, f)):
yield n1
elif attr == Attr.Chain:
n2 = nodes_meta.Get_Iir(n, f)
while n2 != Null_Iir:
for n1 in nodes_iter(n2):
yield n1
n2 = iirs.Get_Chain(n2)
elif attr == Attr.Maybe_Ref:
if not iirs.Get_Is_Ref(n, f):
for n1 in nodes_iter(nodes_meta.Get_Iir(n, f)):
yield n1
elif typ == types.Iir_List:
attr = nodes_meta.get_field_attribute(f)
if attr == Attr.ANone:
for n1 in list_iter(nodes_meta.Get_Iir_List(n, f)):
yield n1
if chain_next:
for n1 in nodes_iter(chain_next):
yield n1
def list_iter(lst):
"""Iterate of all element of Iir_List lst."""
if lst == Null_Iir_List:
return
for i in range(Get_Nbr_Elements(lst)):
yield Get_Nth_Element(lst, i)
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