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#!/usr/bin/env python
# WOW THIS IS TERRIBLE
import json
import argparse
import re
import sys
import os
import jinja2 as j2
test_define_re = re.compile("TEST_START(.*)TEST_STOP")
parser = argparse.ArgumentParser()
parser.add_argument("file", help="vhdl file to read from")
parser.add_argument("output", help="vhdl file to save to")
args = parser.parse_args()
def load_file_def(fname):
filecontent = ""
with open(fname, "r") as f:
filecontent = f.read()
groups = test_define_re.search(filecontent).groups()
if groups:
return json.loads(groups[0])
else:
print("No def in file", f=sys.stderr)
test_def = load_file_def(args.file)
name = os.path.splitext(args.file)[0]
def generate_vhdl_file(f, td, name):
def tof(s):
f.write(s)
tof(f"""
library IEEE;
use IEEE.STD_LOGIC_1164.all;
entity test_{name} is
end test_{name};
architecture behavior of test_{name} is
component {name} is
port (
""")
# Generate PORT section
first = True
if "clk" in td:
tof(f"{td['clk']}: IN STD_LOGIC")
first = False
for i in td["inputs"]:
if not first:
tof(";\n")
first = False
args = i.split(",")
if len(args) > 1:
tof(f"{args[0]} : IN STD_LOGIC_VECTOR({args[1]} downto {args[2]})")
else:
# Not a vector
tof(f"{args[0]} : IN STD_LOGIC")
for o in td["outputs"]:
if not first:
tof(";\n")
first = False
args = o.split(",")
if len(args) > 1:
tof(f"{args[0]} : OUT STD_LOGIC_VECTOR({args[1]} downto {args[2]})")
else:
# Not a vector
tof(f"{args[0]} : OUT STD_LOGIC")
tof(");\nend component;\n");
# Define signals
if "clk" in td:
tof(f"signal in_{td['clk']}: STD_LOGIC;\n")
for i in td["inputs"]:
args = i.split(",")
if len(args) > 1:
tof(f"signal in_{args[0]} : STD_LOGIC_VECTOR({args[1]} downto {args[2]});\n")
else:
# Not a vector
tof(f"signal in_{args[0]} : STD_LOGIC;\n")
for i in td["outputs"]:
args = i.split(",")
if len(args) > 1:
tof(f"signal out_{args[0]} : STD_LOGIC_VECTOR({args[1]} downto {args[2]});\n")
else:
# Not a vector
tof(f"signal out_{args[0]} : STD_LOGIC;\n")
tof(f"""\nbegin
uut: {name} port map(\n""")
first = True
if "clk" in td:
tof(f"{td['clk']} => in_{td['clk']}")
first = False
for i in td["inputs"]:
if not first:
tof(",\n")
first = False
args = i.split(",")
tof(f"{args[0]} => in_{args[0]}")
for i in td["outputs"]:
if not first:
tof(",\n")
first = False
args = i.split(",")
tof(f"{args[0]} => out_{args[0]}")
tof(");\n\nstim_proc: process\nbegin\n")
def wait():
tof(f"wait for {td.get('teststep', 1)} fs;")
for tindex, t in enumerate(td["testin"]):
# Add clock
if "clk" in td:
tof(f"in_{td['clk']} <= '0';")
for index, i in enumerate(td["inputs"]):
args = i.split(",")
if len(args) > 1:
tof(f"in_{args[0]} <= \"{t[index]}\";")
else:
tof(f"in_{args[0]} <= '{t[index]}';")
wait()
if "clk" in td:
tof(f"in_{td['clk']} <= '1';")
wait()
tof("wait;\nend process;\nend;")
with open(args.output, "w") as f:
generate_vhdl_file(f, test_def, name)
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