# See LICENSE for licensing information.
#
# Copyright (c) 2016-2019 Regents of the University of California and The Board
# of Regents for the Oklahoma Agricultural and Mechanical College
# (acting for and on behalf of Oklahoma State University)
# All rights reserved.
#
"""
This is a module that will import the correct DRC/LVS/PEX 
module based on what tools are found. It is a layer of indirection
to enable multiple verification tool support.

Each DRC/LVS/PEX tool should implement the functions run_drc, run_lvs, and
run_pex, repsectively. If there is an error, they should abort and report the errors.
If not, OpenRAM will continue as if nothing happened!
"""

import os
import debug
from globals import OPTS
from globals import get_tool
from tech import drc_name
from tech import lvs_name
from tech import pex_name

debug.info(1, "Initializing verify...")

if not OPTS.check_lvsdrc:
    debug.info(1, "LVS/DRC/PEX disabled.")
    OPTS.drc_exe = None
    OPTS.lvs_exe = None
    OPTS.pex_exe = None
else:
    debug.info(1, "Finding DRC/LVS/PEX tools.")
    OPTS.drc_exe = get_tool("DRC", ["calibre", "assura", "magic"], drc_name)
    OPTS.lvs_exe = get_tool("LVS", ["calibre", "assura", "netgen"], lvs_name)
    OPTS.pex_exe = get_tool("PEX", ["calibre", "magic"], pex_name)
    if OPTS.tech_name == "sky130":
        OPTS.magic_exe = get_tool("GDS", ["magic"], None)

if not OPTS.drc_exe:
    from .none import run_drc, print_drc_stats
elif "calibre"==OPTS.drc_exe[0]:
    from .calibre import run_drc, print_drc_stats
elif "assura"==OPTS.drc_exe[0]:
    from .assura import run_drc, print_drc_stats
elif "magic"==OPTS.drc_exe[0]:
    from .magic import run_drc, print_drc_stats
else:
    debug.warning("Did not find a supported DRC tool.")

if not OPTS.lvs_exe:
    from .none import run_lvs, print_lvs_stats
elif "calibre"==OPTS.lvs_exe[0]:
    from .calibre import run_lvs, print_lvs_stats
elif "assura"==OPTS.lvs_exe[0]:
    from .assura import run_lvs, print_lvs_stats
elif "netgen"==OPTS.lvs_exe[0]:
    from .magic import run_lvs, print_lvs_stats
else:
    debug.warning("Did not find a supported LVS tool.")


if not OPTS.pex_exe:
    from .none import run_pex,print_pex_stats
elif "calibre"==OPTS.pex_exe[0]:
    from .calibre import run_pex,print_pex_stats
elif "magic"==OPTS.pex_exe[0]:
    from .magic import run_pex,print_pex_stats
else:
    debug.warning("Did not find a supported PEX tool.")

if OPTS.tech_name == "sky130":
    if "magic"==OPTS.magic_exe[0]:
        from .magic import filter_gds
    else:
        debug.warning("Did not find Magic.")