def __init__(self,
options: Options,
status_file: str,
timeout: Optional[int] = None) -> None:
"""Initialize the server with the desired mypy flags."""
self.options = options
# Snapshot the options info before we muck with it, to detect changes
self.options_snapshot = options.snapshot()
self.timeout = timeout
self.fine_grained_manager = None # type: Optional[FineGrainedBuildManager]
if os.path.isfile(status_file):
os.unlink(status_file)
self.fscache = FileSystemCache()
options.raise_exceptions = True
options.incremental = True
options.fine_grained_incremental = True
options.show_traceback = True
if options.use_fine_grained_cache:
# Using fine_grained_cache implies generating and caring
# about the fine grained cache
options.cache_fine_grained = True
else:
options.cache_dir = os.devnull
# Fine-grained incremental doesn't support general partial types
# (details in https://github.com/python/mypy/issues/4492)
options.local_partial_types = True
self.status_file = status_file
# Since the object is created in the parent process we can check
# the output terminal options here.
self.formatter = FancyFormatter(sys.stdout, sys.stderr,
options.show_error_codes)
def __init__(self,
options: Options,
timeout: Optional[int] = None) -> None:
"""Initialize the server with the desired mypy flags."""
self.options = options
# Snapshot the options info before we muck with it, to detect changes
self.options_snapshot = options.snapshot()
self.timeout = timeout
self.fine_grained_manager = None # type: Optional[FineGrainedBuildManager]
if os.path.isfile(STATUS_FILE):
os.unlink(STATUS_FILE)
self.fscache = FileSystemCache()
options.incremental = True
options.fine_grained_incremental = True
options.show_traceback = True
if options.use_fine_grained_cache:
# Using fine_grained_cache implies generating and caring
# about the fine grained cache
options.cache_fine_grained = True
else:
options.cache_dir = os.devnull
# Fine-grained incremental doesn't support general partial types
# (details in https://github.com/python/mypy/issues/4492)
options.local_partial_types = True
def __init__(self, options: Options,
status_file: str,
timeout: Optional[int] = None) -> None:
"""Initialize the server with the desired mypy flags."""
self.options = options
# Snapshot the options info before we muck with it, to detect changes
self.options_snapshot = options.snapshot()
self.timeout = timeout
self.fine_grained_manager = None # type: Optional[FineGrainedBuildManager]
if os.path.isfile(status_file):
os.unlink(status_file)
self.fscache = FileSystemCache()
options.incremental = True
options.fine_grained_incremental = True
options.show_traceback = True
if options.use_fine_grained_cache:
# Using fine_grained_cache implies generating and caring
# about the fine grained cache
options.cache_fine_grained = True
else:
options.cache_dir = os.devnull
# Fine-grained incremental doesn't support general partial types
# (details in https://github.com/python/mypy/issues/4492)
options.local_partial_types = True
self.status_file = status_file
def __init__(self,
options: Options,
timeout: Optional[int] = None,
alt_lib_path: Optional[str] = None) -> None:
"""Initialize the server with the desired mypy flags."""
self.options = options
self.timeout = timeout
self.alt_lib_path = alt_lib_path
self.fine_grained_manager = None # type: Optional[FineGrainedBuildManager]
if os.path.isfile(STATUS_FILE):
os.unlink(STATUS_FILE)
self.fscache = FileSystemCache(self.options.python_version)
options.incremental = True
options.fine_grained_incremental = True
options.show_traceback = True
if options.use_fine_grained_cache:
options.cache_fine_grained = True # set this so that cache options match
else:
options.cache_dir = os.devnull
# Fine-grained incremental doesn't support general partial types
# (details in https://github.com/python/mypy/issues/4492)
options.local_partial_types = True
def build(self, source: str) -> Tuple[List[str], Dict[str, MypyFile]]:
options = Options()
options.use_builtins_fixtures = True
options.show_traceback = True
options.cache_dir = os.devnull
try:
result = build.build(sources=[BuildSource('main', None, source)],
options=options,
alt_lib_path=test_temp_dir)
except CompileError as e:
# TODO: Is it okay to return None?
return e.messages, None
return result.errors, result.files
def build(self, source: str) -> Tuple[List[str], Optional[Dict[str, MypyFile]]]:
options = Options()
options.use_builtins_fixtures = True
options.show_traceback = True
options.cache_dir = os.devnull
try:
result = build.build(sources=[BuildSource('main', None, source)],
options=options,
alt_lib_path=test_temp_dir)
except CompileError as e:
# TODO: Is it okay to return None?
return e.messages, None
return result.errors, result.files
def build(self, source: str) -> Tuple[List[str], BuildManager, Graph]:
options = Options()
options.use_builtins_fixtures = True
options.show_traceback = True
options.cache_dir = os.devnull
try:
result = build.build(sources=[BuildSource('main', None, source)],
options=options,
alt_lib_path=test_temp_dir)
except CompileError as e:
# TODO: We need a manager and a graph in this case as well
assert False, str('\n'.join(e.messages))
return e.messages, None, None
return result.errors, result.manager, result.graph
def build_dir(target_dir: str) -> Tuple[List[str], BuildManager, Graph]:
sources = expand_dir(target_dir)
options = Options()
options.incremental = True
options.show_traceback = True
options.cache_dir = os.devnull
try:
result = build.build(sources=sources,
options=options)
except CompileError as e:
# TODO: We need a manager and a graph in this case as well
assert False, str('\n'.join(e.messages))
return e.messages, None, None
return result.errors, result.manager, result.graph
def build(
self, source: str
) -> Tuple[List[str], Optional[Dict[str, MypyFile]], Optional[Dict[
Expression, Type]]]:
options = Options()
options.use_builtins_fixtures = True
options.show_traceback = True
options.cache_dir = os.devnull
try:
result = build.build(sources=[BuildSource('main', None, source)],
options=options,
alt_lib_path=test_temp_dir)
except CompileError as e:
# TODO: Should perhaps not return None here.
return e.messages, None, None
return result.errors, result.files, result.types
def build(self,
source: str,
python_version: Tuple[int, int]) -> Tuple[List[str],
Optional[Dict[str, MypyFile]],
Optional[Dict[Expression, Type]]]:
options = Options()
options.use_builtins_fixtures = True
options.show_traceback = True
options.cache_dir = os.devnull
options.python_version = python_version
try:
result = build.build(sources=[BuildSource('main', None, source)],
options=options,
alt_lib_path=test_temp_dir)
except CompileError as e:
# TODO: Should perhaps not return None here.
return e.messages, None, None
return result.errors, result.files, result.types
def __init__(self, options: Options,
timeout: Optional[int] = None,
alt_lib_path: Optional[str] = None) -> None:
"""Initialize the server with the desired mypy flags."""
self.options = options
self.timeout = timeout
self.alt_lib_path = alt_lib_path
self.fine_grained_manager = None # type: Optional[FineGrainedBuildManager]
if os.path.isfile(STATUS_FILE):
os.unlink(STATUS_FILE)
options.incremental = True
options.fine_grained_incremental = True
options.show_traceback = True
if options.use_fine_grained_cache:
options.cache_fine_grained = True # set this so that cache options match
else:
options.cache_dir = os.devnull
# Fine-grained incremental doesn't support general partial types
# (details in https://github.com/python/mypy/issues/4492)
options.local_partial_types = True
def process_options(args: List[str],
stdout: Optional[TextIO] = None,
stderr: Optional[TextIO] = None,
require_targets: bool = True,
server_options: bool = False,
fscache: Optional[FileSystemCache] = None,
program: str = 'mypy',
header: str = HEADER,
) -> Tuple[List[BuildSource], Options]:
"""Parse command line arguments.
If a FileSystemCache is passed in, and package_root options are given,
call fscache.set_package_root() to set the cache's package root.
"""
stdout = stdout or sys.stdout
stderr = stderr or sys.stderr
parser = CapturableArgumentParser(prog=program,
usage=header,
description=DESCRIPTION,
epilog=FOOTER,
fromfile_prefix_chars='@',
formatter_class=AugmentedHelpFormatter,
add_help=False,
stdout=stdout,
stderr=stderr)
strict_flag_names = [] # type: List[str]
strict_flag_assignments = [] # type: List[Tuple[str, bool]]
def add_invertible_flag(flag: str,
*,
inverse: Optional[str] = None,
default: bool,
dest: Optional[str] = None,
help: str,
strict_flag: bool = False,
group: Optional[argparse._ActionsContainer] = None
) -> None:
if inverse is None:
inverse = invert_flag_name(flag)
if group is None:
group = parser
if help is not argparse.SUPPRESS:
help += " (inverse: {})".format(inverse)
arg = group.add_argument(flag,
action='store_false' if default else 'store_true',
dest=dest,
help=help)
dest = arg.dest
arg = group.add_argument(inverse,
action='store_true' if default else 'store_false',
dest=dest,
help=argparse.SUPPRESS)
if strict_flag:
assert dest is not None
strict_flag_names.append(flag)
strict_flag_assignments.append((dest, not default))
# Unless otherwise specified, arguments will be parsed directly onto an
# Options object. Options that require further processing should have
# their `dest` prefixed with `special-opts:`, which will cause them to be
# parsed into the separate special_opts namespace object.
# Note: we have a style guide for formatting the mypy --help text. See
# https://github.com/python/mypy/wiki/Documentation-Conventions
general_group = parser.add_argument_group(
title='Optional arguments')
general_group.add_argument(
'-h', '--help', action='help',
help="Show this help message and exit")
general_group.add_argument(
'-v', '--verbose', action='count', dest='verbosity',
help="More verbose messages")
general_group.add_argument(
'-V', '--version', action=CapturableVersionAction,
version='%(prog)s ' + __version__,
help="Show program's version number and exit",
stdout=stdout)
config_group = parser.add_argument_group(
title='Config file',
description="Use a config file instead of command line arguments. "
"This is useful if you are using many flags or want "
"to set different options per each module.")
config_group.add_argument(
'--config-file',
help="Configuration file, must have a [mypy] section "
"(defaults to {})".format(', '.join(defaults.CONFIG_FILES)))
add_invertible_flag('--warn-unused-configs', default=False, strict_flag=True,
help="Warn about unused '[mypy-<pattern>]' config sections",
group=config_group)
imports_group = parser.add_argument_group(
title='Import discovery',
description="Configure how imports are discovered and followed.")
add_invertible_flag(
'--namespace-packages', default=False,
help="Support namespace packages (PEP 420, __init__.py-less)",
group=imports_group)
imports_group.add_argument(
'--ignore-missing-imports', action='store_true',
help="Silently ignore imports of missing modules")
imports_group.add_argument(
'--follow-imports', choices=['normal', 'silent', 'skip', 'error'],
default='normal', help="How to treat imports (default normal)")
imports_group.add_argument(
'--python-executable', action='store', metavar='EXECUTABLE',
help="Python executable used for finding PEP 561 compliant installed"
" packages and stubs",
dest='special-opts:python_executable')
imports_group.add_argument(
'--no-site-packages', action='store_true',
dest='special-opts:no_executable',
help="Do not search for installed PEP 561 compliant packages")
imports_group.add_argument(
'--no-silence-site-packages', action='store_true',
help="Do not silence errors in PEP 561 compliant installed packages")
platform_group = parser.add_argument_group(
title='Platform configuration',
description="Type check code assuming it will be run under certain "
"runtime conditions. By default, mypy assumes your code "
"will be run using the same operating system and Python "
"version you are using to run mypy itself.")
platform_group.add_argument(
'--python-version', type=parse_version, metavar='x.y',
help='Type check code assuming it will be running on Python x.y',
dest='special-opts:python_version')
platform_group.add_argument(
'-2', '--py2', dest='special-opts:python_version', action='store_const',
const=defaults.PYTHON2_VERSION,
help="Use Python 2 mode (same as --python-version 2.7)")
platform_group.add_argument(
'--platform', action='store', metavar='PLATFORM',
help="Type check special-cased code for the given OS platform "
"(defaults to sys.platform)")
platform_group.add_argument(
'--always-true', metavar='NAME', action='append', default=[],
help="Additional variable to be considered True (may be repeated)")
platform_group.add_argument(
'--always-false', metavar='NAME', action='append', default=[],
help="Additional variable to be considered False (may be repeated)")
disallow_any_group = parser.add_argument_group(
title='Disallow dynamic typing',
description="Disallow the use of the dynamic 'Any' type under certain conditions.")
disallow_any_group.add_argument(
'--disallow-any-unimported', default=False, action='store_true',
help="Disallow Any types resulting from unfollowed imports")
disallow_any_group.add_argument(
'--disallow-any-expr', default=False, action='store_true',
help='Disallow all expressions that have type Any')
disallow_any_group.add_argument(
'--disallow-any-decorated', default=False, action='store_true',
help='Disallow functions that have Any in their signature '
'after decorator transformation')
disallow_any_group.add_argument(
'--disallow-any-explicit', default=False, action='store_true',
help='Disallow explicit Any in type positions')
add_invertible_flag('--disallow-any-generics', default=False, strict_flag=True,
help='Disallow usage of generic types that do not specify explicit type '
'parameters', group=disallow_any_group)
add_invertible_flag('--disallow-subclassing-any', default=False, strict_flag=True,
help="Disallow subclassing values of type 'Any' when defining classes",
group=disallow_any_group)
untyped_group = parser.add_argument_group(
title='Untyped definitions and calls',
description="Configure how untyped definitions and calls are handled. "
"Note: by default, mypy ignores any untyped function definitions "
"and assumes any calls to such functions have a return "
"type of 'Any'.")
add_invertible_flag('--disallow-untyped-calls', default=False, strict_flag=True,
help="Disallow calling functions without type annotations"
" from functions with type annotations",
group=untyped_group)
add_invertible_flag('--disallow-untyped-defs', default=False, strict_flag=True,
help="Disallow defining functions without type annotations"
" or with incomplete type annotations",
group=untyped_group)
add_invertible_flag('--disallow-incomplete-defs', default=False, strict_flag=True,
help="Disallow defining functions with incomplete type annotations",
group=untyped_group)
add_invertible_flag('--check-untyped-defs', default=False, strict_flag=True,
help="Type check the interior of functions without type annotations",
group=untyped_group)
add_invertible_flag('--disallow-untyped-decorators', default=False, strict_flag=True,
help="Disallow decorating typed functions with untyped decorators",
group=untyped_group)
none_group = parser.add_argument_group(
title='None and Optional handling',
description="Adjust how values of type 'None' are handled. For more context on "
"how mypy handles values of type 'None', see: "
"http://mypy.readthedocs.io/en/latest/kinds_of_types.html#no-strict-optional")
add_invertible_flag('--no-implicit-optional', default=False, strict_flag=True,
help="Don't assume arguments with default values of None are Optional",
group=none_group)
none_group.add_argument(
'--strict-optional', action='store_true',
help=argparse.SUPPRESS)
none_group.add_argument(
'--no-strict-optional', action='store_false', dest='strict_optional',
help="Disable strict Optional checks (inverse: --strict-optional)")
none_group.add_argument(
'--strict-optional-whitelist', metavar='GLOB', nargs='*',
help=argparse.SUPPRESS)
lint_group = parser.add_argument_group(
title='Configuring warnings',
description="Detect code that is sound but redundant or problematic.")
add_invertible_flag('--warn-redundant-casts', default=False, strict_flag=True,
help="Warn about casting an expression to its inferred type",
group=lint_group)
add_invertible_flag('--warn-unused-ignores', default=False, strict_flag=True,
help="Warn about unneeded '# type: ignore' comments",
group=lint_group)
add_invertible_flag('--no-warn-no-return', dest='warn_no_return', default=True,
help="Do not warn about functions that end without returning",
group=lint_group)
add_invertible_flag('--warn-return-any', default=False, strict_flag=True,
help="Warn about returning values of type Any"
" from non-Any typed functions",
group=lint_group)
add_invertible_flag('--warn-unreachable', default=False, strict_flag=False,
help="Warn about statements or expressions inferred to be"
" unreachable or redundant",
group=lint_group)
# Note: this group is intentionally added here even though we don't add
# --strict to this group near the end.
#
# That way, this group will appear after the various strictness groups
# but before the remaining flags.
# We add `--strict` near the end so we don't accidentally miss any strictness
# flags that are added after this group.
strictness_group = parser.add_argument_group(
title='Miscellaneous strictness flags')
add_invertible_flag('--allow-untyped-globals', default=False, strict_flag=False,
help="Suppress toplevel errors caused by missing annotations",
group=strictness_group)
add_invertible_flag('--allow-redefinition', default=False, strict_flag=False,
help="Allow unconditional variable redefinition with a new type",
group=strictness_group)
add_invertible_flag('--no-implicit-reexport', default=True, strict_flag=True,
dest='implicit_reexport',
help="Treat imports as private unless aliased",
group=strictness_group)
add_invertible_flag('--strict-equality', default=False, strict_flag=True,
help="Prohibit equality, identity, and container checks for"
" non-overlapping types",
group=strictness_group)
strict_help = "Strict mode; enables the following flags: {}".format(
", ".join(strict_flag_names))
strictness_group.add_argument(
'--strict', action='store_true', dest='special-opts:strict',
help=strict_help)
strictness_group.add_argument(
'--disable-error-code', metavar='NAME', action='append', default=[],
help="Disable a specific error code")
strictness_group.add_argument(
'--enable-error-code', metavar='NAME', action='append', default=[],
help="Enable a specific error code"
)
error_group = parser.add_argument_group(
title='Configuring error messages',
description="Adjust the amount of detail shown in error messages.")
add_invertible_flag('--show-error-context', default=False,
dest='show_error_context',
help='Precede errors with "note:" messages explaining context',
group=error_group)
add_invertible_flag('--show-column-numbers', default=False,
help="Show column numbers in error messages",
group=error_group)
add_invertible_flag('--show-error-codes', default=False,
help="Show error codes in error messages",
group=error_group)
add_invertible_flag('--pretty', default=False,
help="Use visually nicer output in error messages:"
" Use soft word wrap, show source code snippets,"
" and show error location markers",
group=error_group)
add_invertible_flag('--no-color-output', dest='color_output', default=True,
help="Do not colorize error messages",
group=error_group)
add_invertible_flag('--no-error-summary', dest='error_summary', default=True,
help="Do not show error stats summary",
group=error_group)
add_invertible_flag('--show-absolute-path', default=False,
help="Show absolute paths to files",
group=error_group)
incremental_group = parser.add_argument_group(
title='Incremental mode',
description="Adjust how mypy incrementally type checks and caches modules. "
"Mypy caches type information about modules into a cache to "
"let you speed up future invocations of mypy. Also see "
"mypy's daemon mode: "
"mypy.readthedocs.io/en/latest/mypy_daemon.html#mypy-daemon")
incremental_group.add_argument(
'-i', '--incremental', action='store_true',
help=argparse.SUPPRESS)
incremental_group.add_argument(
'--no-incremental', action='store_false', dest='incremental',
help="Disable module cache (inverse: --incremental)")
incremental_group.add_argument(
'--cache-dir', action='store', metavar='DIR',
help="Store module cache info in the given folder in incremental mode "
"(defaults to '{}')".format(defaults.CACHE_DIR))
add_invertible_flag('--sqlite-cache', default=False,
help="Use a sqlite database to store the cache",
group=incremental_group)
incremental_group.add_argument(
'--cache-fine-grained', action='store_true',
help="Include fine-grained dependency information in the cache for the mypy daemon")
incremental_group.add_argument(
'--skip-version-check', action='store_true',
help="Allow using cache written by older mypy version")
incremental_group.add_argument(
'--skip-cache-mtime-checks', action='store_true',
help="Skip cache internal consistency checks based on mtime")
internals_group = parser.add_argument_group(
title='Advanced options',
description="Debug and customize mypy internals.")
internals_group.add_argument(
'--pdb', action='store_true', help="Invoke pdb on fatal error")
internals_group.add_argument(
'--show-traceback', '--tb', action='store_true',
help="Show traceback on fatal error")
internals_group.add_argument(
'--raise-exceptions', action='store_true', help="Raise exception on fatal error"
)
internals_group.add_argument(
'--custom-typing-module', metavar='MODULE', dest='custom_typing_module',
help="Use a custom typing module")
internals_group.add_argument(
'--custom-typeshed-dir', metavar='DIR',
help="Use the custom typeshed in DIR")
add_invertible_flag('--warn-incomplete-stub', default=False,
help="Warn if missing type annotation in typeshed, only relevant with"
" --disallow-untyped-defs or --disallow-incomplete-defs enabled",
group=internals_group)
internals_group.add_argument(
'--shadow-file', nargs=2, metavar=('SOURCE_FILE', 'SHADOW_FILE'),
dest='shadow_file', action='append',
help="When encountering SOURCE_FILE, read and type check "
"the contents of SHADOW_FILE instead.")
add_invertible_flag('--fast-exit', default=False, help=argparse.SUPPRESS,
group=internals_group)
report_group = parser.add_argument_group(
title='Report generation',
description='Generate a report in the specified format.')
for report_type in sorted(defaults.REPORTER_NAMES):
if report_type not in {'memory-xml'}:
report_group.add_argument('--%s-report' % report_type.replace('_', '-'),
metavar='DIR',
dest='special-opts:%s_report' % report_type)
other_group = parser.add_argument_group(
title='Miscellaneous')
other_group.add_argument(
'--quickstart-file', help=argparse.SUPPRESS)
other_group.add_argument(
'--junit-xml', help="Write junit.xml to the given file")
other_group.add_argument(
'--find-occurrences', metavar='CLASS.MEMBER',
dest='special-opts:find_occurrences',
help="Print out all usages of a class member (experimental)")
other_group.add_argument(
'--scripts-are-modules', action='store_true',
help="Script x becomes module x instead of __main__")
if server_options:
# TODO: This flag is superfluous; remove after a short transition (2018-03-16)
other_group.add_argument(
'--experimental', action='store_true', dest='fine_grained_incremental',
help="Enable fine-grained incremental mode")
other_group.add_argument(
'--use-fine-grained-cache', action='store_true',
help="Use the cache in fine-grained incremental mode")
# hidden options
parser.add_argument(
'--stats', action='store_true', dest='dump_type_stats', help=argparse.SUPPRESS)
parser.add_argument(
'--inferstats', action='store_true', dest='dump_inference_stats',
help=argparse.SUPPRESS)
parser.add_argument(
'--dump-build-stats', action='store_true',
help=argparse.SUPPRESS)
# --debug-cache will disable any cache-related compressions/optimizations,
# which will make the cache writing process output pretty-printed JSON (which
# is easier to debug).
parser.add_argument('--debug-cache', action='store_true', help=argparse.SUPPRESS)
# --dump-deps will dump all fine-grained dependencies to stdout
parser.add_argument('--dump-deps', action='store_true', help=argparse.SUPPRESS)
# --dump-graph will dump the contents of the graph of SCCs and exit.
parser.add_argument('--dump-graph', action='store_true', help=argparse.SUPPRESS)
# --semantic-analysis-only does exactly that.
parser.add_argument('--semantic-analysis-only', action='store_true', help=argparse.SUPPRESS)
# --local-partial-types disallows partial types spanning module top level and a function
# (implicitly defined in fine-grained incremental mode)
parser.add_argument('--local-partial-types', action='store_true', help=argparse.SUPPRESS)
# --logical-deps adds some more dependencies that are not semantically needed, but
# may be helpful to determine relative importance of classes and functions for overall
# type precision in a code base. It also _removes_ some deps, so this flag should be never
# used except for generating code stats. This also automatically enables --cache-fine-grained.
# NOTE: This is an experimental option that may be modified or removed at any time.
parser.add_argument('--logical-deps', action='store_true', help=argparse.SUPPRESS)
# --bazel changes some behaviors for use with Bazel (https://bazel.build).
parser.add_argument('--bazel', action='store_true', help=argparse.SUPPRESS)
# --package-root adds a directory below which directories are considered
# packages even without __init__.py. May be repeated.
parser.add_argument('--package-root', metavar='ROOT', action='append', default=[],
help=argparse.SUPPRESS)
# --cache-map FILE ... gives a mapping from source files to cache files.
# Each triple of arguments is a source file, a cache meta file, and a cache data file.
# Modules not mentioned in the file will go through cache_dir.
# Must be followed by another flag or by '--' (and then only file args may follow).
parser.add_argument('--cache-map', nargs='+', dest='special-opts:cache_map',
help=argparse.SUPPRESS)
# options specifying code to check
code_group = parser.add_argument_group(
title="Running code",
description="Specify the code you want to type check. For more details, see "
"mypy.readthedocs.io/en/latest/running_mypy.html#running-mypy")
code_group.add_argument(
'-m', '--module', action='append', metavar='MODULE',
default=[],
dest='special-opts:modules',
help="Type-check module; can repeat for more modules")
code_group.add_argument(
'-p', '--package', action='append', metavar='PACKAGE',
default=[],
dest='special-opts:packages',
help="Type-check package recursively; can be repeated")
code_group.add_argument(
'-c', '--command', action='append', metavar='PROGRAM_TEXT',
dest='special-opts:command',
help="Type-check program passed in as string")
code_group.add_argument(
metavar='files', nargs='*', dest='special-opts:files',
help="Type-check given files or directories")
# Parse arguments once into a dummy namespace so we can get the
# filename for the config file and know if the user requested all strict options.
dummy = argparse.Namespace()
parser.parse_args(args, dummy)
config_file = dummy.config_file
# Don't explicitly test if "config_file is not None" for this check.
# This lets `--config-file=` (an empty string) be used to disable all config files.
if config_file and not os.path.exists(config_file):
parser.error("Cannot find config file '%s'" % config_file)
options = Options()
def set_strict_flags() -> None:
for dest, value in strict_flag_assignments:
setattr(options, dest, value)
# Parse config file first, so command line can override.
parse_config_file(options, set_strict_flags, config_file, stdout, stderr)
# Set strict flags before parsing (if strict mode enabled), so other command
# line options can override.
if getattr(dummy, 'special-opts:strict'): # noqa
set_strict_flags()
# Override cache_dir if provided in the environment
environ_cache_dir = os.getenv('MYPY_CACHE_DIR', '')
if environ_cache_dir.strip():
options.cache_dir = environ_cache_dir
# Parse command line for real, using a split namespace.
special_opts = argparse.Namespace()
parser.parse_args(args, SplitNamespace(options, special_opts, 'special-opts:'))
# The python_version is either the default, which can be overridden via a config file,
# or stored in special_opts and is passed via the command line.
options.python_version = special_opts.python_version or options.python_version
try:
infer_python_executable(options, special_opts)
except PythonExecutableInferenceError as e:
parser.error(str(e))
if special_opts.no_executable or options.no_site_packages:
options.python_executable = None
# Paths listed in the config file will be ignored if any paths are passed on
# the command line.
if options.files and not special_opts.files:
special_opts.files = options.files
# Check for invalid argument combinations.
if require_targets:
code_methods = sum(bool(c) for c in [special_opts.modules + special_opts.packages,
special_opts.command,
special_opts.files])
if code_methods == 0:
parser.error("Missing target module, package, files, or command.")
elif code_methods > 1:
parser.error("May only specify one of: module/package, files, or command.")
# Check for overlapping `--always-true` and `--always-false` flags.
overlap = set(options.always_true) & set(options.always_false)
if overlap:
parser.error("You can't make a variable always true and always false (%s)" %
', '.join(sorted(overlap)))
# Process `--enable-error-code` and `--disable-error-code` flags
disabled_codes = set(options.disable_error_code)
enabled_codes = set(options.enable_error_code)
valid_error_codes = set(error_codes.keys())
invalid_codes = (enabled_codes | disabled_codes) - valid_error_codes
if invalid_codes:
parser.error("Invalid error code(s): %s" %
', '.join(sorted(invalid_codes)))
options.disabled_error_codes |= {error_codes[code] for code in disabled_codes}
options.enabled_error_codes |= {error_codes[code] for code in enabled_codes}
# Enabling an error code always overrides disabling
options.disabled_error_codes -= options.enabled_error_codes
# Set build flags.
if options.strict_optional_whitelist is not None:
# TODO: Deprecate, then kill this flag
options.strict_optional = True
if special_opts.find_occurrences:
state.find_occurrences = special_opts.find_occurrences.split('.')
assert state.find_occurrences is not None
if len(state.find_occurrences) < 2:
parser.error("Can only find occurrences of class members.")
if len(state.find_occurrences) != 2:
parser.error("Can only find occurrences of non-nested class members.")
# Set reports.
for flag, val in vars(special_opts).items():
if flag.endswith('_report') and val is not None:
report_type = flag[:-7].replace('_', '-')
report_dir = val
options.report_dirs[report_type] = report_dir
# Process --package-root.
if options.package_root:
process_package_roots(fscache, parser, options)
# Process --cache-map.
if special_opts.cache_map:
if options.sqlite_cache:
parser.error("--cache-map is incompatible with --sqlite-cache")
process_cache_map(parser, special_opts, options)
# Let logical_deps imply cache_fine_grained (otherwise the former is useless).
if options.logical_deps:
options.cache_fine_grained = True
# Set target.
if special_opts.modules + special_opts.packages:
options.build_type = BuildType.MODULE
search_paths = SearchPaths((os.getcwd(),), tuple(mypy_path() + options.mypy_path), (), ())
targets = []
# TODO: use the same cache that the BuildManager will
cache = FindModuleCache(search_paths, fscache, options, special_opts.packages)
for p in special_opts.packages:
if os.sep in p or os.altsep and os.altsep in p:
fail("Package name '{}' cannot have a slash in it.".format(p),
stderr, options)
p_targets = cache.find_modules_recursive(p)
if not p_targets:
fail("Can't find package '{}'".format(p), stderr, options)
targets.extend(p_targets)
for m in special_opts.modules:
targets.append(BuildSource(None, m, None))
return targets, options
elif special_opts.command:
options.build_type = BuildType.PROGRAM_TEXT
targets = [BuildSource(None, None, '\n'.join(special_opts.command))]
return targets, options
else:
try:
targets = create_source_list(special_opts.files, options, fscache)
# Variable named e2 instead of e to work around mypyc bug #620
# which causes issues when using the same variable to catch
# exceptions of different types.
except InvalidSourceList as e2:
fail(str(e2), stderr, options)
return targets, options