# Copyright lowRISC contributors.
# Licensed under the Apache License, Version 2.0, see LICENSE for details.
# SPDX-License-Identifier: Apache-2.0
"""Generate SystemVerilog designs from validated register JSON tree
"""

import logging as log
import operator
import sys

from mako import exceptions
from mako.template import Template
from pkg_resources import resource_filename

from .field_enums import HwAccess, SwAccess, SwRdAccess, SwWrAccess
from .gen_rtl import json_to_reg
from .data import *


# function get block class name
def bcname(b):
    return b.name + "_reg_block"


# function get reg class name
def rcname(b, r):
    return b.name + "_reg_" + r.name


# function get mem class name
def mcname(b, m):
    return b.name + "_mem_" + m.name.lower()


# function get mem inst name
def miname(m):
    return m.name.lower()


# function get base addr in SV syntax
def sv_base_addr(b):
    return "{}'h{:x}".format(b.width, b.base_addr)


# function generate dv ral model using raw dict object parsed from hjson
def gen_dv(obj, outdir):
    # obj: OrderedDict
    block = json_to_reg(obj)
    gen_ral(block, outdir)


# function generate dv ral model using gen_rtl::Block specification
def gen_ral(block, outdir):
    # Read Register templates
    uvm_reg_tpl = Template(
        filename=resource_filename('reggen', 'uvm_reg.sv.tpl'))

    # Generate pkg.sv with block name
    with open(outdir + "/" + block.name + "_ral_pkg.sv", 'w') as fout:
        try:
            fout.write(
                uvm_reg_tpl.render(block=block,
                                   HwAccess=HwAccess,
                                   SwRdAccess=SwRdAccess,
                                   SwWrAccess=SwWrAccess))
        except:
            log.error(exceptions.text_error_template().render())