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#
# Cython - Command Line Parsing
#
from __future__ import absolute_import
import sys
import os
from argparse import ArgumentParser, Action, SUPPRESS
from . import Options
if sys.version_info < (3, 3):
# TODO: This workaround can be removed in Cython 3.1
FileNotFoundError = IOError
class ParseDirectivesAction(Action):
def __call__(self, parser, namespace, values, option_string=None):
old_directives = dict(getattr(namespace, self.dest,
Options.get_directive_defaults()))
directives = Options.parse_directive_list(
values, relaxed_bool=True, current_settings=old_directives)
setattr(namespace, self.dest, directives)
class ParseOptionsAction(Action):
def __call__(self, parser, namespace, values, option_string=None):
options = dict(getattr(namespace, self.dest, {}))
for opt in values.split(','):
if '=' in opt:
n, v = opt.split('=', 1)
v = v.lower() not in ('false', 'f', '0', 'no')
else:
n, v = opt, True
options[n] = v
setattr(namespace, self.dest, options)
class ParseCompileTimeEnvAction(Action):
def __call__(self, parser, namespace, values, option_string=None):
old_env = dict(getattr(namespace, self.dest, {}))
new_env = Options.parse_compile_time_env(values, current_settings=old_env)
setattr(namespace, self.dest, new_env)
class ActivateAllWarningsAction(Action):
def __call__(self, parser, namespace, values, option_string=None):
directives = getattr(namespace, 'compiler_directives', {})
directives.update(Options.extra_warnings)
namespace.compiler_directives = directives
class SetLenientAction(Action):
def __call__(self, parser, namespace, values, option_string=None):
namespace.error_on_unknown_names = False
namespace.error_on_uninitialized = False
class SetGDBDebugAction(Action):
def __call__(self, parser, namespace, values, option_string=None):
namespace.gdb_debug = True
namespace.output_dir = os.curdir
class SetGDBDebugOutputAction(Action):
def __call__(self, parser, namespace, values, option_string=None):
namespace.gdb_debug = True
namespace.output_dir = values
class SetAnnotateCoverageAction(Action):
def __call__(self, parser, namespace, values, option_string=None):
namespace.annotate = True
namespace.annotate_coverage_xml = values
def create_cython_argparser():
description = "Cython (https://cython.org/) is a compiler for code written in the "\
"Cython language. Cython is based on Pyrex by Greg Ewing."
parser = ArgumentParser(description=description, argument_default=SUPPRESS)
parser.add_argument("-V", "--version", dest='show_version', action='store_const', const=1,
help='Display version number of cython compiler')
parser.add_argument("-l", "--create-listing", dest='use_listing_file', action='store_const', const=1,
help='Write error messages to a listing file')
parser.add_argument("-I", "--include-dir", dest='include_path', action='append',
help='Search for include files in named directory '
'(multiple include directories are allowed).')
parser.add_argument("-o", "--output-file", dest='output_file', action='store', type=str,
help='Specify name of generated C file')
parser.add_argument("-t", "--timestamps", dest='timestamps', action='store_const', const=1,
help='Only compile newer source files')
parser.add_argument("-f", "--force", dest='timestamps', action='store_const', const=0,
help='Compile all source files (overrides implied -t)')
parser.add_argument("-v", "--verbose", dest='verbose', action='count',
help='Be verbose, print file names on multiple compilation')
parser.add_argument("-p", "--embed-positions", dest='embed_pos_in_docstring', action='store_const', const=1,
help='If specified, the positions in Cython files of each '
'function definition is embedded in its docstring.')
parser.add_argument("--cleanup", dest='generate_cleanup_code', action='store', type=int,
help='Release interned objects on python exit, for memory debugging. '
'Level indicates aggressiveness, default 0 releases nothing.')
parser.add_argument("-w", "--working", dest='working_path', action='store', type=str,
help='Sets the working directory for Cython (the directory modules are searched from)')
parser.add_argument("--gdb", action=SetGDBDebugAction, nargs=0,
help='Output debug information for cygdb')
parser.add_argument("--gdb-outdir", action=SetGDBDebugOutputAction, type=str,
help='Specify gdb debug information output directory. Implies --gdb.')
parser.add_argument("-D", "--no-docstrings", dest='docstrings', action='store_false',
help='Strip docstrings from the compiled module.')
parser.add_argument('-a', '--annotate', action='store_const', const='default', dest='annotate',
help='Produce a colorized HTML version of the source.')
parser.add_argument('--annotate-fullc', action='store_const', const='fullc', dest='annotate',
help='Produce a colorized HTML version of the source '
'which includes entire generated C/C++-code.')
parser.add_argument("--annotate-coverage", dest='annotate_coverage_xml', action=SetAnnotateCoverageAction, type=str,
help='Annotate and include coverage information from cov.xml.')
parser.add_argument("--line-directives", dest='emit_linenums', action='store_true',
help='Produce #line directives pointing to the .pyx source')
parser.add_argument("-+", "--cplus", dest='cplus', action='store_const', const=1,
help='Output a C++ rather than C file.')
parser.add_argument('--embed', action='store_const', const='main',
help='Generate a main() function that embeds the Python interpreter. '
'Pass --embed=<method_name> for a name other than main().')
parser.add_argument('-2', dest='language_level', action='store_const', const=2,
help='Compile based on Python-2 syntax and code semantics.')
parser.add_argument('-3', dest='language_level', action='store_const', const=3,
help='Compile based on Python-3 syntax and code semantics.')
parser.add_argument('--3str', dest='language_level', action='store_const', const='3str',
help='Compile based on Python-3 syntax and code semantics without '
'assuming unicode by default for string literals under Python 2.')
parser.add_argument("--lenient", action=SetLenientAction, nargs=0,
help='Change some compile time errors to runtime errors to '
'improve Python compatibility')
parser.add_argument("--capi-reexport-cincludes", dest='capi_reexport_cincludes', action='store_true',
help='Add cincluded headers to any auto-generated header files.')
parser.add_argument("--fast-fail", dest='fast_fail', action='store_true',
help='Abort the compilation on the first error')
parser.add_argument("-Werror", "--warning-errors", dest='warning_errors', action='store_true',
help='Make all warnings into errors')
parser.add_argument("-Wextra", "--warning-extra", action=ActivateAllWarningsAction, nargs=0,
help='Enable extra warnings')
parser.add_argument('-X', '--directive', metavar='NAME=VALUE,...',
dest='compiler_directives', type=str,
action=ParseDirectivesAction,
help='Overrides a compiler directive')
parser.add_argument('-E', '--compile-time-env', metavar='NAME=VALUE,...',
dest='compile_time_env', type=str,
action=ParseCompileTimeEnvAction,
help='Provides compile time env like DEF would do.')
parser.add_argument("--module-name",
dest='module_name', type=str, action='store',
help='Fully qualified module name. If not given, is '
'deduced from the import path if source file is in '
'a package, or equals the filename otherwise.')
parser.add_argument('-M', '--depfile', action='store_true', help='produce depfiles for the sources')
parser.add_argument('sources', nargs='*', default=[])
# TODO: add help
parser.add_argument("-z", "--pre-import", dest='pre_import', action='store', type=str, help=SUPPRESS)
parser.add_argument("--convert-range", dest='convert_range', action='store_true', help=SUPPRESS)
parser.add_argument("--no-c-in-traceback", dest='c_line_in_traceback', action='store_false', help=SUPPRESS)
parser.add_argument("--cimport-from-pyx", dest='cimport_from_pyx', action='store_true', help=SUPPRESS)
parser.add_argument("--old-style-globals", dest='old_style_globals', action='store_true', help=SUPPRESS)
# debug stuff:
from . import DebugFlags
for name in vars(DebugFlags):
if name.startswith("debug"):
option_name = name.replace('_', '-')
parser.add_argument("--" + option_name, action='store_true', help=SUPPRESS)
return parser
def parse_command_line_raw(parser, args):
# special handling for --embed and --embed=xxxx as they aren't correctly parsed
def filter_out_embed_options(args):
with_embed, without_embed = [], []
for x in args:
if x == '--embed' or x.startswith('--embed='):
with_embed.append(x)
else:
without_embed.append(x)
return with_embed, without_embed
with_embed, args_without_embed = filter_out_embed_options(args)
arguments, unknown = parser.parse_known_args(args_without_embed)
sources = arguments.sources
del arguments.sources
# unknown can be either debug, embed or input files or really unknown
for option in unknown:
if option.startswith('-'):
parser.error("unknown option " + option)
else:
sources.append(option)
# embed-stuff must be handled extra:
for x in with_embed:
if x == '--embed':
name = 'main' # default value
else:
name = x[len('--embed='):]
setattr(arguments, 'embed', name)
return arguments, sources
def parse_command_line(args):
parser = create_cython_argparser()
arguments, sources = parse_command_line_raw(parser, args)
work_dir = getattr(arguments, 'working_path', '')
for source in sources:
if work_dir and not os.path.isabs(source):
source = os.path.join(work_dir, source)
if not os.path.exists(source):
import errno
raise FileNotFoundError(errno.ENOENT, os.strerror(errno.ENOENT), source)
options = Options.CompilationOptions(Options.default_options)
for name, value in vars(arguments).items():
if name.startswith('debug'):
from . import DebugFlags
if name in dir(DebugFlags):
setattr(DebugFlags, name, value)
else:
parser.error("Unknown debug flag: %s\n" % name)
elif hasattr(Options, name):
setattr(Options, name, value)
else:
setattr(options, name, value)
if options.use_listing_file and len(sources) > 1:
parser.error("cython: Only one source file allowed when using -o\n")
if len(sources) == 0 and not options.show_version:
parser.error("cython: Need at least one source file\n")
if Options.embed and len(sources) > 1:
parser.error("cython: Only one source file allowed when using --embed\n")
if options.module_name:
if options.timestamps:
parser.error("cython: Cannot use --module-name with --timestamps\n")
if len(sources) > 1:
parser.error("cython: Only one source file allowed when using --module-name\n")
return options, sources
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