#!/usr/bin/env python3
# Copyright 2020 The Skywater PDK Authors
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     https://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.


import os
import re

import common

from pathlib import Path

re_subckt = re.compile('^\s*(?:inline)?\s*\.?(?:subckt|model)\s+([^\s]*)\s*')


broken = []
unassigned = []
for pn in common.files('spice'):
    print("spice file", pn)

    found = False
    if Path(pn).suffix in ['.cor', '.scs', '.all']:
        unassigned.append(pn)
        continue
    if Path(pn).suffix in ['.hed', '.txt']:
        continue
    with open(pn) as f:
        f = iter(f)
        try:
            while True:
                l = next(f)
                l = l.strip().lower()
                if l.startswith('*'):
                    continue
                if l.startswith('//'):
                    continue
                if 'subckt' not in l and '.model' not in l and 'model' not in l:
                    continue

                nl = next(f)
                nl = nl.strip().lower()
                if 'ends' in nl:
                    common.add_file_for_module(mod, pn, include=True)
                    continue

                m = re_subckt.search(l)
                if not m:
                    print("  Error:", l)
                    continue
                mod = m.group(1)
                if mod == 'par_polyres_sub(r0':
                    mod = 'par_polyres_sub'
                common.add_file_for_module(mod, pn)
                found = True
        except StopIteration:
            pass

    # Hack for empty file
    if 's8rf_pshort_W1p65_L0p15_M4_b' in pn:
        found = True

    if not found:
        broken.append(pn)
        print(" !!!! No subckt found in", pn)


common.write_mod_json('spice', common.modules, broken)
if unassigned:
    with open('.files.mod2files.spice.unassigned', 'w') as f:
        for fname in unassigned:
            f.write(f'{fname}\n')