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#!/usr/bin/env python
import libghdl
import libghdl.thin.name_table as name_table
import libghdl.thin.files_map as files_map
import libghdl.thin.vhdl.nodes as nodes
import libghdl.thin.vhdl.sem_lib as sem_lib
def init():
"""Initialization: set options and then load libaries"""
libghdl.set_option(b'--std=08')
libghdl.analyze_init()
def get_identifier_ptr(n):
"""Return the python string from node :param n: identifier"""
return name_table.Get_Name_Ptr(nodes.Get_Identifier(n)).decode('utf-8')
def list_units(filename):
# Load the file
file_id = name_table.Get_Identifier(filename.encode('utf_8'))
sfe = files_map.Read_Source_File(name_table.Null_Identifier, file_id)
if sfe == files_map.No_Source_File_Entry:
print("cannot open file '{}'".format(filename))
return
# Parse and analyze
file = sem_lib.Load_File(sfe)
# Display all design units
unit = nodes.Get_First_Design_Unit(file)
while unit != nodes.Null_Iir:
lib_unit = nodes.Get_Library_Unit(unit)
if nodes.Get_Kind(lib_unit) == nodes.Iir_Kind.Entity_Declaration:
print('entity {}'.format(get_identifier_ptr(lib_unit)))
elif nodes.Get_Kind(lib_unit) == nodes.Iir_Kind.Architecture_Body:
print('architecture {}'.format(get_identifier_ptr(lib_unit)))
else:
print('unknown unit!')
unit = nodes.Get_Chain(unit)
def main():
init()
list_units('demo.vhdl')
if __name__ == '__main__':
main()
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