"""
Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
See https://llvm.org/LICENSE.txt for license information.
SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception

Provides the configuration class, which holds all information related to
how this invocation of the test suite should be run.
"""

from __future__ import absolute_import
from __future__ import print_function

# System modules
import os


# Third-party modules
import unittest2

# LLDB Modules
import lldbsuite


# The test suite.
suite = unittest2.TestSuite()

# The list of categories we said we care about
categories_list = None
# set to true if we are going to use categories for cherry-picking test cases
use_categories = False
# Categories we want to skip
skip_categories = ["darwin-log"]
# Categories we expect to fail
xfail_categories = []
# use this to track per-category failures
failures_per_category = {}

# The path to LLDB.framework is optional.
lldb_framework_path = None

# Test suite repeat count.  Can be overwritten with '-# count'.
count = 1

# The 'arch' and 'compiler' can be specified via command line.
arch = None        # Must be initialized after option parsing
compiler = None    # Must be initialized after option parsing

# The overriden dwarf verison.
dwarf_version = 0

# Any overridden settings.
# Always disable default dynamic types for testing purposes.
settings = [('target.prefer-dynamic-value', 'no-dynamic-values')]

# Path to the FileCheck testing tool. Not optional.
filecheck = None

# The arch might dictate some specific CFLAGS to be passed to the toolchain to build
# the inferior programs.  The global variable cflags_extras provides a hook to do
# just that.
cflags_extras = ''

# The filters (testclass.testmethod) used to admit tests into our test suite.
filters = []

# The regular expression pattern to match against eligible filenames as
# our test cases.
regexp = None

# Sets of tests which are excluded at runtime
skip_tests = None
xfail_tests = None

# By default, recorded session info for errored/failed test are dumped into its
# own file under a session directory named after the timestamp of the test suite
# run.  Use '-s session-dir-name' to specify a specific dir name.
sdir_name = None

# Valid options:
# f - test file name (without extension)
# n - test class name
# m - test method name
# a - architecture
# c - compiler path
# The default is to write all fields.
session_file_format = 'fnmac'

# Set this flag if there is any session info dumped during the test run.
sdir_has_content = False

# svn_info stores the output from 'svn info lldb.base.dir'.
svn_info = ''

# Default verbosity is 0.
verbose = 0

# By default, search from the script directory.
# We can't use sys.path[0] to determine the script directory
# because it doesn't work under a debugger
testdirs = [os.path.dirname(os.path.realpath(__file__))]

# Separator string.
separator = '-' * 70

failed = False

# LLDB Remote platform setting
lldb_platform_name = None
lldb_platform_url = None
lldb_platform_working_dir = None

# The base directory in which the tests are being built.
test_build_dir = None

# The clang module cache directory used by lldb.
lldb_module_cache_dir = None
# The clang module cache directory used by clang.
clang_module_cache_dir = None

# The only directory to scan for tests. If multiple test directories are
# specified, and an exclusive test subdirectory is specified, the latter option
# takes precedence.
exclusive_test_subdir = None

# Test results handling globals
results_filename = None
results_formatter_name = None
results_formatter_object = None
results_formatter_options = None
test_result = None

# Test rerun configuration vars
rerun_all_issues = False

# The names of all tests. Used to assert we don't have two tests with the
# same base name.
all_tests = set()

def shouldSkipBecauseOfCategories(test_categories):
    if use_categories:
        if len(test_categories) == 0 or len(
                categories_list & set(test_categories)) == 0:
            return True

    for category in skip_categories:
        if category in test_categories:
            return True

    return False


def get_absolute_path_to_exclusive_test_subdir():
    """
    If an exclusive test subdirectory is specified, return its absolute path.
    Otherwise return None.
    """
    test_directory = os.path.dirname(os.path.realpath(__file__))

    if not exclusive_test_subdir:
        return

    if len(exclusive_test_subdir) > 0:
        test_subdir = os.path.join(test_directory, exclusive_test_subdir)
        if os.path.isdir(test_subdir):
            return test_subdir

        print('specified test subdirectory {} is not a valid directory\n'
                .format(test_subdir))


def get_absolute_path_to_root_test_dir():
    """
    If an exclusive test subdirectory is specified, return its absolute path.
    Otherwise, return the absolute path of the root test directory.
    """
    test_subdir = get_absolute_path_to_exclusive_test_subdir()
    if test_subdir:
        return test_subdir

    return os.path.dirname(os.path.realpath(__file__))


def get_filecheck_path():
    """
    Get the path to the FileCheck testing tool.
    """
    if filecheck and os.path.lexists(filecheck):
        return filecheck