# Copyright 2012-2019 The Meson development team

# 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

#     http://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.
from __future__ import annotations

"""Representations specific to the Metrowerks/Freescale Embedded C/C++ compiler family."""

import os
import typing as T

from ...mesonlib import EnvironmentException, OptionKey

if T.TYPE_CHECKING:
    from ...envconfig import MachineInfo
    from ...compilers.compilers import Compiler, CompileCheckMode
else:
    # This is a bit clever, for mypy we pretend that these mixins descend from
    # Compiler, so we get all of the methods and attributes defined for us, but
    # for runtime we make them descend from object (which all classes normally
    # do). This gives up DRYer type checking, with no runtime impact
    Compiler = object

mwcc_buildtype_args: T.Dict[str, T.List[str]] = {
    'plain': [],
    'debug': ['-g'],
    'debugoptimized': ['-g', '-O4'],
    'release': ['-O4,p'],
    'minsize': ['-Os'],
    'custom': [],
}

mwccarm_instruction_set_args: T.Dict[str, T.List[str]] = {
    'generic': ['-proc', 'generic'],
    'v4': ['-proc', 'v4'],
    'v4t': ['-proc', 'v4t'],
    'v5t': ['-proc', 'v5t'],
    'v5te': ['-proc', 'v5te'],
    'v6': ['-proc', 'v6'],
    'arm7tdmi': ['-proc', 'arm7tdmi'],
    'arm710t': ['-proc', 'arm710t'],
    'arm720t': ['-proc', 'arm720t'],
    'arm740t': ['-proc', 'arm740t'],
    'arm7ej': ['-proc', 'arm7ej'],
    'arm9tdmi': ['-proc', 'arm9tdmi'],
    'arm920t': ['-proc', 'arm920t'],
    'arm922t': ['-proc', 'arm922t'],
    'arm940t': ['-proc', 'arm940t'],
    'arm9ej': ['-proc', 'arm9ej'],
    'arm926ej': ['-proc', 'arm926ej'],
    'arm946e': ['-proc', 'arm946e'],
    'arm966e': ['-proc', 'arm966e'],
    'arm1020e': ['-proc', 'arm1020e'],
    'arm1022e': ['-proc', 'arm1022e'],
    'arm1026ej': ['-proc', 'arm1026ej'],
    'dbmx1': ['-proc', 'dbmx1'],
    'dbmxl': ['-proc', 'dbmxl'],
    'XScale': ['-proc', 'XScale'],
    'pxa255': ['-proc', 'pxa255'],
    'pxa261': ['-proc', 'pxa261'],
    'pxa262': ['-proc', 'pxa262'],
    'pxa263': ['-proc', 'pxa263']
}

mwcceppc_instruction_set_args: T.Dict[str, T.List[str]] = {
    'generic': ['-proc', 'generic'],
    '401': ['-proc', '401'],
    '403': ['-proc', '403'],
    '505': ['-proc', '505'],
    '509': ['-proc', '509'],
    '555': ['-proc', '555'],
    '601': ['-proc', '601'],
    '602': ['-proc', '602'],
    '603': ['-proc', '603'],
    '603e': ['-proc', '603e'],
    '604': ['-proc', '604'],
    '604e': ['-proc', '604e'],
    '740': ['-proc', '740'],
    '750': ['-proc', '750'],
    '801': ['-proc', '801'],
    '821': ['-proc', '821'],
    '823': ['-proc', '823'],
    '850': ['-proc', '850'],
    '860': ['-proc', '860'],
    '7400': ['-proc', '7400'],
    '7450': ['-proc', '7450'],
    '8240': ['-proc', '8240'],
    '8260': ['-proc', '8260'],
    'e500': ['-proc', 'e500'],
    'gekko': ['-proc', 'gekko'],
}

mwasmarm_instruction_set_args: T.Dict[str, T.List[str]] = {
    'arm4': ['-proc', 'arm4'],
    'arm4t': ['-proc', 'arm4t'],
    'arm4xm': ['-proc', 'arm4xm'],
    'arm4txm': ['-proc', 'arm4txm'],
    'arm5': ['-proc', 'arm5'],
    'arm5T': ['-proc', 'arm5T'],
    'arm5xM': ['-proc', 'arm5xM'],
    'arm5TxM': ['-proc', 'arm5TxM'],
    'arm5TE': ['-proc', 'arm5TE'],
    'arm5TExP': ['-proc', 'arm5TExP'],
    'arm6': ['-proc', 'arm6'],
    'xscale': ['-proc', 'xscale']
}

mwasmeppc_instruction_set_args: T.Dict[str, T.List[str]] = {
    '401': ['-proc', '401'],
    '403': ['-proc', '403'],
    '505': ['-proc', '505'],
    '509': ['-proc', '509'],
    '555': ['-proc', '555'],
    '56X': ['-proc', '56X'],
    '601': ['-proc', '601'],
    '602': ['-proc', '602'],
    '603': ['-proc', '603'],
    '603e': ['-proc', '603e'],
    '604': ['-proc', '604'],
    '604e': ['-proc', '604e'],
    '740': ['-proc', '740'],
    '74X': ['-proc', '74X'],
    '750': ['-proc', '750'],
    '75X': ['-proc', '75X'],
    '801': ['-proc', '801'],
    '821': ['-proc', '821'],
    '823': ['-proc', '823'],
    '850': ['-proc', '850'],
    '85X': ['-proc', '85X'],
    '860': ['-proc', '860'],
    '86X': ['-proc', '86X'],
    '87X': ['-proc', '87X'],
    '88X': ['-proc', '88X'],
    '5100': ['-proc', '5100'],
    '5200': ['-proc', '5200'],
    '7400': ['-proc', '7400'],
    '744X': ['-proc', '744X'],
    '7450': ['-proc', '7450'],
    '745X': ['-proc', '745X'],
    '82XX': ['-proc', '82XX'],
    '8240': ['-proc', '8240'],
    '824X': ['-proc', '824X'],
    '8260': ['-proc', '8260'],
    '827X': ['-proc', '827X'],
    '8280': ['-proc', '8280'],
    'e300': ['-proc', 'e300'],
    'e300c2': ['-proc', 'e300c2'],
    'e300c3': ['-proc', 'e300c3'],
    'e300c4': ['-proc', 'e300c4'],
    'e600': ['-proc', 'e600'],
    '85xx': ['-proc', '85xx'],
    'e500': ['-proc', 'e500'],
    'e500v2': ['-proc', 'e500v2'],
    'Zen': ['-proc', 'Zen'],
    '5565': ['-proc', '5565'],
    '5674': ['-proc', '5674'],
    'gekko': ['-proc', 'gekko'],
    'generic': ['-proc', 'generic'],
}

mwcc_optimization_args: T.Dict[str, T.List[str]] = {
    'plain': [],
    '0': ['-O0'],
    'g': ['-Op'],
    '1': ['-O1'],
    '2': ['-O2'],
    '3': ['-O3'],
    's': ['-Os']
}

mwcc_debug_args: T.Dict[bool, T.List[str]] = {
    False: [],
    True: ['-g']
}


class MetrowerksCompiler(Compiler):
    id = 'mwcc'

    # These compilers can actually invoke the linker, but they choke on
    # linker-specific flags. So it's best to invoke the linker directly
    INVOKES_LINKER = False

    def __init__(self) -> None:
        if not self.is_cross:
            raise EnvironmentException(f'{id} supports only cross-compilation.')

        self.base_options = {
            OptionKey(o) for o in ['b_pch', 'b_ndebug']}

        default_warn_args: T.List[str] = []
        self.warn_args: T.Dict[str, T.List[str]] = {
            '0': ['-w', 'off'],
            '1': default_warn_args,
            '2': default_warn_args + ['-w', 'most'],
            '3': default_warn_args + ['-w', 'all'],
            'everything': default_warn_args + ['-w', 'full']}

    def depfile_for_object(self, objfile: str) -> T.Optional[str]:
        # Earlier versions of these compilers do not support specifying
        # a custom name for a depfile, and can only generate '<input_file>.d'
        return os.path.splitext(objfile)[0] + '.' + self.get_depfile_suffix()

    def get_always_args(self) -> T.List[str]:
        return ['-gccinc']

    def get_buildtype_args(self, buildtype: str) -> T.List[str]:
        return mwcc_buildtype_args[buildtype]

    def get_compiler_check_args(self, mode: CompileCheckMode) -> T.List[str]:
        return []

    def get_compile_only_args(self) -> T.List[str]:
        return ['-c']

    def get_debug_args(self, is_debug: bool) -> T.List[str]:
        return mwcc_debug_args[is_debug]

    def get_dependency_gen_args(self, outtarget: str, outfile: str) -> T.List[str]:
        # Check comment in depfile_for_object()
        return ['-gccdep', '-MD']

    def get_depfile_suffix(self) -> str:
        return 'd'

    def get_include_args(self, path: str, is_system: bool) -> T.List[str]:
        if not path:
            path = '.'
        return ['-I' + path]

    def get_no_optimization_args(self) -> T.List[str]:
        return ['-opt', 'off']

    def get_no_stdinc_args(self) -> T.List[str]:
        return ['-nostdinc']

    def get_no_stdlib_link_args(self) -> T.List[str]:
        return ['-nostdlib']

    def get_optimization_args(self, optimization_level: str) -> T.List[str]:
        return mwcc_optimization_args[optimization_level]

    def get_output_args(self, outputname: str) -> T.List[str]:
        return ['-o', outputname]

    def get_pic_args(self) -> T.List[str]:
        return ['-pic']

    def get_preprocess_only_args(self) -> T.List[str]:
        return ['-E']

    def get_preprocess_to_file_args(self) -> T.List[str]:
        return ['-P']

    def get_pch_use_args(self, pch_dir: str, header: str) -> T.List[str]:
        return ['-prefix', self.get_pch_name(header)]

    def get_pch_name(self, name: str) -> str:
        return os.path.basename(name) + '.' + self.get_pch_suffix()

    def get_pch_suffix(self) -> str:
        return 'mch'

    def get_warn_args(self, level: str) -> T.List[str]:
        return self.warn_args[level]

    def get_werror_args(self) -> T.List[str]:
        return ['-w', 'error']

    @classmethod
    def _unix_args_to_native(cls, args: T.List[str], info: MachineInfo) -> T.List[str]:
        result: T.List[str] = []
        for i in args:
            if i.startswith('-D'):
                i = '-D' + i[2:]
            if i.startswith('-I'):
                i = '-I' + i[2:]
            if i.startswith('-Wl,-rpath='):
                continue
            elif i == '--print-search-dirs':
                continue
            elif i.startswith('-L'):
                continue
            result.append(i)
        return result

    def compute_parameters_with_absolute_paths(self, parameter_list: T.List[str], build_dir: str) -> T.List[str]:
        for idx, i in enumerate(parameter_list):
            if i[:2] == '-I':
                parameter_list[idx] = i[:9] + os.path.normpath(os.path.join(build_dir, i[9:]))

        return parameter_list