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#!/usr/bin/env python
import libghdl
from libghdl.thin import name_table
from libghdl.thin import files_map
from libghdl.thin.vhdl import nodes
from libghdl.thin.vhdl import sem_lib
from libghdl.thin import errorout_console
def init():
"""Initialization: set options and then load libaries"""
# Print error messages on the console
errorout_console.Install_Handler()
# Set options. This must be done before analyze_init()
libghdl.set_option(b"--std=08")
# Finish initialization. This will load the standard package
if libghdl.analyze_init_status() != 0:
raise Exception("libghdl initialization error")
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 '%s'" % filename)
return
# Parse
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 %s" % get_identifier_ptr(lib_unit))
elif nodes.Get_Kind(lib_unit) == nodes.Iir_Kind.Architecture_Body:
print("architecture %s" % 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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