/usr/lib/python3/dist-packages/Cython/Compiler/Main.py is in cython3 0.25.2-1.
This file is owned by root:root, with mode 0o644.
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# Cython Top Level
#
from __future__ import absolute_import
import os
import re
import sys
import io
if sys.version_info[:2] < (2, 6) or (3, 0) <= sys.version_info[:2] < (3, 2):
sys.stderr.write("Sorry, Cython requires Python 2.6+ or 3.2+, found %d.%d\n" % tuple(sys.version_info[:2]))
sys.exit(1)
try:
from __builtin__ import basestring
except ImportError:
basestring = str
from . import Errors
# Do not import Parsing here, import it when needed, because Parsing imports
# Nodes, which globally needs debug command line options initialized to set a
# conditional metaclass. These options are processed by CmdLine called from
# main() in this file.
# import Parsing
from .StringEncoding import EncodedString
from .Scanning import PyrexScanner, FileSourceDescriptor
from .Errors import PyrexError, CompileError, error, warning
from .Symtab import ModuleScope
from .. import Utils
from . import Options
from . import Version # legacy import needed by old PyTables versions
version = Version.version # legacy attribute - use "Cython.__version__" instead
module_name_pattern = re.compile(r"[A-Za-z_][A-Za-z0-9_]*(\.[A-Za-z_][A-Za-z0-9_]*)*$")
verbose = 0
class CompilationData(object):
# Bundles the information that is passed from transform to transform.
# (For now, this is only)
# While Context contains every pxd ever loaded, path information etc.,
# this only contains the data related to a single compilation pass
#
# pyx ModuleNode Main code tree of this compilation.
# pxds {string : ModuleNode} Trees for the pxds used in the pyx.
# codewriter CCodeWriter Where to output final code.
# options CompilationOptions
# result CompilationResult
pass
class Context(object):
# This class encapsulates the context needed for compiling
# one or more Cython implementation files along with their
# associated and imported declaration files. It includes
# the root of the module import namespace and the list
# of directories to search for include files.
#
# modules {string : ModuleScope}
# include_directories [string]
# future_directives [object]
# language_level int currently 2 or 3 for Python 2/3
cython_scope = None
def __init__(self, include_directories, compiler_directives, cpp=False,
language_level=2, options=None, create_testscope=True):
# cython_scope is a hack, set to False by subclasses, in order to break
# an infinite loop.
# Better code organization would fix it.
from . import Builtin, CythonScope
self.modules = {"__builtin__" : Builtin.builtin_scope}
self.cython_scope = CythonScope.create_cython_scope(self)
self.modules["cython"] = self.cython_scope
self.include_directories = include_directories
self.future_directives = set()
self.compiler_directives = compiler_directives
self.cpp = cpp
self.options = options
self.pxds = {} # full name -> node tree
self._interned = {} # (type(value), value, *key_args) -> interned_value
standard_include_path = os.path.abspath(os.path.normpath(
os.path.join(os.path.dirname(__file__), os.path.pardir, 'Includes')))
self.include_directories = include_directories + [standard_include_path]
self.set_language_level(language_level)
self.gdb_debug_outputwriter = None
def set_language_level(self, level):
self.language_level = level
if level >= 3:
from .Future import print_function, unicode_literals, absolute_import, division
self.future_directives.update([print_function, unicode_literals, absolute_import, division])
self.modules['builtins'] = self.modules['__builtin__']
def intern_ustring(self, value, encoding=None):
key = (EncodedString, value, encoding)
try:
return self._interned[key]
except KeyError:
pass
value = EncodedString(value)
if encoding:
value.encoding = encoding
self._interned[key] = value
return value
def intern_value(self, value, *key):
key = (type(value), value) + key
try:
return self._interned[key]
except KeyError:
pass
self._interned[key] = value
return value
# pipeline creation functions can now be found in Pipeline.py
def process_pxd(self, source_desc, scope, module_name):
from . import Pipeline
if isinstance(source_desc, FileSourceDescriptor) and source_desc._file_type == 'pyx':
source = CompilationSource(source_desc, module_name, os.getcwd())
result_sink = create_default_resultobj(source, self.options)
pipeline = Pipeline.create_pyx_as_pxd_pipeline(self, result_sink)
result = Pipeline.run_pipeline(pipeline, source)
else:
pipeline = Pipeline.create_pxd_pipeline(self, scope, module_name)
result = Pipeline.run_pipeline(pipeline, source_desc)
return result
def nonfatal_error(self, exc):
return Errors.report_error(exc)
def find_module(self, module_name, relative_to=None, pos=None, need_pxd=1,
absolute_fallback=True):
# Finds and returns the module scope corresponding to
# the given relative or absolute module name. If this
# is the first time the module has been requested, finds
# the corresponding .pxd file and process it.
# If relative_to is not None, it must be a module scope,
# and the module will first be searched for relative to
# that module, provided its name is not a dotted name.
debug_find_module = 0
if debug_find_module:
print("Context.find_module: module_name = %s, relative_to = %s, pos = %s, need_pxd = %s" % (
module_name, relative_to, pos, need_pxd))
scope = None
pxd_pathname = None
if relative_to:
if module_name:
# from .module import ...
qualified_name = relative_to.qualify_name(module_name)
else:
# from . import ...
qualified_name = relative_to.qualified_name
scope = relative_to
relative_to = None
else:
qualified_name = module_name
if not module_name_pattern.match(qualified_name):
raise CompileError(pos or (module_name, 0, 0),
"'%s' is not a valid module name" % module_name)
if relative_to:
if debug_find_module:
print("...trying relative import")
scope = relative_to.lookup_submodule(module_name)
if not scope:
pxd_pathname = self.find_pxd_file(qualified_name, pos)
if pxd_pathname:
scope = relative_to.find_submodule(module_name)
if not scope:
if debug_find_module:
print("...trying absolute import")
if absolute_fallback:
qualified_name = module_name
scope = self
for name in qualified_name.split("."):
scope = scope.find_submodule(name)
if debug_find_module:
print("...scope = %s" % scope)
if not scope.pxd_file_loaded:
if debug_find_module:
print("...pxd not loaded")
if not pxd_pathname:
if debug_find_module:
print("...looking for pxd file")
# Only look in sys.path if we are explicitly looking
# for a .pxd file.
pxd_pathname = self.find_pxd_file(qualified_name, pos, sys_path=need_pxd)
if debug_find_module:
print("......found %s" % pxd_pathname)
if not pxd_pathname and need_pxd:
# Set pxd_file_loaded such that we don't need to
# look for the non-existing pxd file next time.
scope.pxd_file_loaded = True
package_pathname = self.search_include_directories(qualified_name, ".py", pos)
if package_pathname and package_pathname.endswith('__init__.py'):
pass
else:
error(pos, "'%s.pxd' not found" % qualified_name.replace('.', os.sep))
if pxd_pathname:
scope.pxd_file_loaded = True
try:
if debug_find_module:
print("Context.find_module: Parsing %s" % pxd_pathname)
rel_path = module_name.replace('.', os.sep) + os.path.splitext(pxd_pathname)[1]
if not pxd_pathname.endswith(rel_path):
rel_path = pxd_pathname # safety measure to prevent printing incorrect paths
source_desc = FileSourceDescriptor(pxd_pathname, rel_path)
err, result = self.process_pxd(source_desc, scope, qualified_name)
if err:
raise err
(pxd_codenodes, pxd_scope) = result
self.pxds[module_name] = (pxd_codenodes, pxd_scope)
except CompileError:
pass
return scope
def find_pxd_file(self, qualified_name, pos, sys_path=True):
# Search include path (and sys.path if sys_path is True) for
# the .pxd file corresponding to the given fully-qualified
# module name.
# Will find either a dotted filename or a file in a
# package directory. If a source file position is given,
# the directory containing the source file is searched first
# for a dotted filename, and its containing package root
# directory is searched first for a non-dotted filename.
pxd = self.search_include_directories(qualified_name, ".pxd", pos, sys_path=sys_path)
if pxd is None: # XXX Keep this until Includes/Deprecated is removed
if (qualified_name.startswith('python') or
qualified_name in ('stdlib', 'stdio', 'stl')):
standard_include_path = os.path.abspath(os.path.normpath(
os.path.join(os.path.dirname(__file__), os.path.pardir, 'Includes')))
deprecated_include_path = os.path.join(standard_include_path, 'Deprecated')
self.include_directories.append(deprecated_include_path)
try:
pxd = self.search_include_directories(qualified_name, ".pxd", pos)
finally:
self.include_directories.pop()
if pxd:
name = qualified_name
if name.startswith('python'):
warning(pos, "'%s' is deprecated, use 'cpython'" % name, 1)
elif name in ('stdlib', 'stdio'):
warning(pos, "'%s' is deprecated, use 'libc.%s'" % (name, name), 1)
elif name in ('stl'):
warning(pos, "'%s' is deprecated, use 'libcpp.*.*'" % name, 1)
if pxd is None and Options.cimport_from_pyx:
return self.find_pyx_file(qualified_name, pos)
return pxd
def find_pyx_file(self, qualified_name, pos):
# Search include path for the .pyx file corresponding to the
# given fully-qualified module name, as for find_pxd_file().
return self.search_include_directories(qualified_name, ".pyx", pos)
def find_include_file(self, filename, pos):
# Search list of include directories for filename.
# Reports an error and returns None if not found.
path = self.search_include_directories(filename, "", pos,
include=True)
if not path:
error(pos, "'%s' not found" % filename)
return path
def search_include_directories(self, qualified_name, suffix, pos,
include=False, sys_path=False):
return Utils.search_include_directories(
tuple(self.include_directories), qualified_name, suffix, pos, include, sys_path)
def find_root_package_dir(self, file_path):
return Utils.find_root_package_dir(file_path)
def check_package_dir(self, dir, package_names):
return Utils.check_package_dir(dir, tuple(package_names))
def c_file_out_of_date(self, source_path, output_path):
if not os.path.exists(output_path):
return 1
c_time = Utils.modification_time(output_path)
if Utils.file_newer_than(source_path, c_time):
return 1
pos = [source_path]
pxd_path = Utils.replace_suffix(source_path, ".pxd")
if os.path.exists(pxd_path) and Utils.file_newer_than(pxd_path, c_time):
return 1
for kind, name in self.read_dependency_file(source_path):
if kind == "cimport":
dep_path = self.find_pxd_file(name, pos)
elif kind == "include":
dep_path = self.search_include_directories(name, pos)
else:
continue
if dep_path and Utils.file_newer_than(dep_path, c_time):
return 1
return 0
def find_cimported_module_names(self, source_path):
return [ name for kind, name in self.read_dependency_file(source_path)
if kind == "cimport" ]
def is_package_dir(self, dir_path):
return Utils.is_package_dir(dir_path)
def read_dependency_file(self, source_path):
dep_path = Utils.replace_suffix(source_path, ".dep")
if os.path.exists(dep_path):
f = open(dep_path, "rU")
chunks = [ line.strip().split(" ", 1)
for line in f.readlines()
if " " in line.strip() ]
f.close()
return chunks
else:
return ()
def lookup_submodule(self, name):
# Look up a top-level module. Returns None if not found.
return self.modules.get(name, None)
def find_submodule(self, name):
# Find a top-level module, creating a new one if needed.
scope = self.lookup_submodule(name)
if not scope:
scope = ModuleScope(name,
parent_module = None, context = self)
self.modules[name] = scope
return scope
def parse(self, source_desc, scope, pxd, full_module_name):
if not isinstance(source_desc, FileSourceDescriptor):
raise RuntimeError("Only file sources for code supported")
source_filename = source_desc.filename
scope.cpp = self.cpp
# Parse the given source file and return a parse tree.
num_errors = Errors.num_errors
try:
with Utils.open_source_file(source_filename) as f:
from . import Parsing
s = PyrexScanner(f, source_desc, source_encoding = f.encoding,
scope = scope, context = self)
tree = Parsing.p_module(s, pxd, full_module_name)
if self.options.formal_grammar:
try:
from ..Parser import ConcreteSyntaxTree
except ImportError:
raise RuntimeError(
"Formal grammer can only be used with compiled Cython with an available pgen.")
ConcreteSyntaxTree.p_module(source_filename)
except UnicodeDecodeError as e:
#import traceback
#traceback.print_exc()
raise self._report_decode_error(source_desc, e)
if Errors.num_errors > num_errors:
raise CompileError()
return tree
def _report_decode_error(self, source_desc, exc):
msg = exc.args[-1]
position = exc.args[2]
encoding = exc.args[0]
line = 1
column = idx = 0
with io.open(source_desc.filename, "r", encoding='iso8859-1', newline='') as f:
for line, data in enumerate(f, 1):
idx += len(data)
if idx >= position:
column = position - (idx - len(data)) + 1
break
return error((source_desc, line, column),
"Decoding error, missing or incorrect coding=<encoding-name> "
"at top of source (cannot decode with encoding %r: %s)" % (encoding, msg))
def extract_module_name(self, path, options):
# Find fully_qualified module name from the full pathname
# of a source file.
dir, filename = os.path.split(path)
module_name, _ = os.path.splitext(filename)
if "." in module_name:
return module_name
names = [module_name]
while self.is_package_dir(dir):
parent, package_name = os.path.split(dir)
if parent == dir:
break
names.append(package_name)
dir = parent
names.reverse()
return ".".join(names)
def setup_errors(self, options, result):
Errors.reset() # clear any remaining error state
if options.use_listing_file:
path = result.listing_file = Utils.replace_suffix(result.main_source_file, ".lis")
else:
path = None
Errors.open_listing_file(path=path,
echo_to_stderr=options.errors_to_stderr)
def teardown_errors(self, err, options, result):
source_desc = result.compilation_source.source_desc
if not isinstance(source_desc, FileSourceDescriptor):
raise RuntimeError("Only file sources for code supported")
Errors.close_listing_file()
result.num_errors = Errors.num_errors
if result.num_errors > 0:
err = True
if err and result.c_file:
try:
Utils.castrate_file(result.c_file, os.stat(source_desc.filename))
except EnvironmentError:
pass
result.c_file = None
def get_output_filename(source_filename, cwd, options):
if options.cplus:
c_suffix = ".cpp"
else:
c_suffix = ".c"
suggested_file_name = Utils.replace_suffix(source_filename, c_suffix)
if options.output_file:
out_path = os.path.join(cwd, options.output_file)
if os.path.isdir(out_path):
return os.path.join(out_path, os.path.basename(suggested_file_name))
else:
return out_path
else:
return suggested_file_name
def create_default_resultobj(compilation_source, options):
result = CompilationResult()
result.main_source_file = compilation_source.source_desc.filename
result.compilation_source = compilation_source
source_desc = compilation_source.source_desc
result.c_file = get_output_filename(source_desc.filename,
compilation_source.cwd, options)
result.embedded_metadata = options.embedded_metadata
return result
def run_pipeline(source, options, full_module_name=None, context=None):
from . import Pipeline
source_ext = os.path.splitext(source)[1]
options.configure_language_defaults(source_ext[1:]) # py/pyx
if context is None:
context = options.create_context()
# Set up source object
cwd = os.getcwd()
abs_path = os.path.abspath(source)
full_module_name = full_module_name or context.extract_module_name(source, options)
if options.relative_path_in_code_position_comments:
rel_path = full_module_name.replace('.', os.sep) + source_ext
if not abs_path.endswith(rel_path):
rel_path = source # safety measure to prevent printing incorrect paths
else:
rel_path = abs_path
source_desc = FileSourceDescriptor(abs_path, rel_path)
source = CompilationSource(source_desc, full_module_name, cwd)
# Set up result object
result = create_default_resultobj(source, options)
if options.annotate is None:
# By default, decide based on whether an html file already exists.
html_filename = os.path.splitext(result.c_file)[0] + ".html"
if os.path.exists(html_filename):
with io.open(html_filename, "r", encoding="UTF-8") as html_file:
if u'<!-- Generated by Cython' in html_file.read(100):
options.annotate = True
# Get pipeline
if source_ext.lower() == '.py' or not source_ext:
pipeline = Pipeline.create_py_pipeline(context, options, result)
else:
pipeline = Pipeline.create_pyx_pipeline(context, options, result)
context.setup_errors(options, result)
err, enddata = Pipeline.run_pipeline(pipeline, source)
context.teardown_errors(err, options, result)
return result
#------------------------------------------------------------------------
#
# Main Python entry points
#
#------------------------------------------------------------------------
class CompilationSource(object):
"""
Contains the data necesarry to start up a compilation pipeline for
a single compilation unit.
"""
def __init__(self, source_desc, full_module_name, cwd):
self.source_desc = source_desc
self.full_module_name = full_module_name
self.cwd = cwd
class CompilationOptions(object):
"""
Options to the Cython compiler:
show_version boolean Display version number
use_listing_file boolean Generate a .lis file
errors_to_stderr boolean Echo errors to stderr when using .lis
include_path [string] Directories to search for include files
output_file string Name of generated .c file
generate_pxi boolean Generate .pxi file for public declarations
capi_reexport_cincludes
boolean Add cincluded headers to any auto-generated
header files.
timestamps boolean Only compile changed source files.
verbose boolean Always print source names being compiled
compiler_directives dict Overrides for pragma options (see Options.py)
embedded_metadata dict Metadata to embed in the C file as json.
evaluate_tree_assertions boolean Test support: evaluate parse tree assertions
language_level integer The Python language level: 2 or 3
formal_grammar boolean Parse the file with the formal grammar
cplus boolean Compile as c++ code
"""
def __init__(self, defaults=None, **kw):
self.include_path = []
if defaults:
if isinstance(defaults, CompilationOptions):
defaults = defaults.__dict__
else:
defaults = default_options
options = dict(defaults)
options.update(kw)
# let's assume 'default_options' contains a value for most known compiler options
# and validate against them
unknown_options = set(options) - set(default_options)
# ignore valid options that are not in the defaults
unknown_options.difference_update(['include_path'])
if unknown_options:
# TODO: make this a hard error in 0.22
message = "got unknown compilation option%s, please remove: %s" % (
's' if len(unknown_options) > 1 else '',
', '.join(unknown_options))
import warnings
warnings.warn(message)
directives = dict(options['compiler_directives']) # copy mutable field
options['compiler_directives'] = directives
if 'language_level' in directives and 'language_level' not in kw:
options['language_level'] = int(directives['language_level'])
if 'formal_grammar' in directives and 'formal_grammar' not in kw:
options['formal_grammar'] = directives['formal_grammar']
if options['cache'] is True:
options['cache'] = os.path.expanduser("~/.cycache")
self.__dict__.update(options)
def configure_language_defaults(self, source_extension):
if source_extension == 'py':
if self.compiler_directives.get('binding') is None:
self.compiler_directives['binding'] = True
def create_context(self):
return Context(self.include_path, self.compiler_directives,
self.cplus, self.language_level, options=self)
class CompilationResult(object):
"""
Results from the Cython compiler:
c_file string or None The generated C source file
h_file string or None The generated C header file
i_file string or None The generated .pxi file
api_file string or None The generated C API .h file
listing_file string or None File of error messages
object_file string or None Result of compiling the C file
extension_file string or None Result of linking the object file
num_errors integer Number of compilation errors
compilation_source CompilationSource
"""
def __init__(self):
self.c_file = None
self.h_file = None
self.i_file = None
self.api_file = None
self.listing_file = None
self.object_file = None
self.extension_file = None
self.main_source_file = None
class CompilationResultSet(dict):
"""
Results from compiling multiple Pyrex source files. A mapping
from source file paths to CompilationResult instances. Also
has the following attributes:
num_errors integer Total number of compilation errors
"""
num_errors = 0
def add(self, source, result):
self[source] = result
self.num_errors += result.num_errors
def compile_single(source, options, full_module_name = None):
"""
compile_single(source, options, full_module_name)
Compile the given Pyrex implementation file and return a CompilationResult.
Always compiles a single file; does not perform timestamp checking or
recursion.
"""
return run_pipeline(source, options, full_module_name)
def compile_multiple(sources, options):
"""
compile_multiple(sources, options)
Compiles the given sequence of Pyrex implementation files and returns
a CompilationResultSet. Performs timestamp checking and/or recursion
if these are specified in the options.
"""
# run_pipeline creates the context
# context = options.create_context()
sources = [os.path.abspath(source) for source in sources]
processed = set()
results = CompilationResultSet()
timestamps = options.timestamps
verbose = options.verbose
context = None
cwd = os.getcwd()
for source in sources:
if source not in processed:
if context is None:
context = options.create_context()
output_filename = get_output_filename(source, cwd, options)
out_of_date = context.c_file_out_of_date(source, output_filename)
if (not timestamps) or out_of_date:
if verbose:
sys.stderr.write("Compiling %s\n" % source)
result = run_pipeline(source, options, context=context)
results.add(source, result)
# Compiling multiple sources in one context doesn't quite
# work properly yet.
context = None
processed.add(source)
return results
def compile(source, options = None, full_module_name = None, **kwds):
"""
compile(source [, options], [, <option> = <value>]...)
Compile one or more Pyrex implementation files, with optional timestamp
checking and recursing on dependecies. The source argument may be a string
or a sequence of strings If it is a string and no recursion or timestamp
checking is requested, a CompilationResult is returned, otherwise a
CompilationResultSet is returned.
"""
options = CompilationOptions(defaults = options, **kwds)
if isinstance(source, basestring) and not options.timestamps:
return compile_single(source, options, full_module_name)
else:
return compile_multiple(source, options)
#------------------------------------------------------------------------
#
# Main command-line entry point
#
#------------------------------------------------------------------------
def setuptools_main():
return main(command_line = 1)
def main(command_line = 0):
args = sys.argv[1:]
any_failures = 0
if command_line:
from .CmdLine import parse_command_line
options, sources = parse_command_line(args)
else:
options = CompilationOptions(default_options)
sources = args
if options.show_version:
sys.stderr.write("Cython version %s\n" % version)
if options.working_path!="":
os.chdir(options.working_path)
try:
result = compile(sources, options)
if result.num_errors > 0:
any_failures = 1
except (EnvironmentError, PyrexError) as e:
sys.stderr.write(str(e) + '\n')
any_failures = 1
if any_failures:
sys.exit(1)
#------------------------------------------------------------------------
#
# Set the default options depending on the platform
#
#------------------------------------------------------------------------
default_options = dict(
show_version = 0,
use_listing_file = 0,
errors_to_stderr = 1,
cplus = 0,
output_file = None,
annotate = None,
annotate_coverage_xml = None,
generate_pxi = 0,
capi_reexport_cincludes = 0,
working_path = "",
timestamps = None,
verbose = 0,
quiet = 0,
compiler_directives = {},
embedded_metadata = {},
evaluate_tree_assertions = False,
emit_linenums = False,
relative_path_in_code_position_comments = True,
c_line_in_traceback = True,
language_level = 2,
formal_grammar = False,
gdb_debug = False,
compile_time_env = None,
common_utility_include_dir = None,
output_dir=None,
build_dir=None,
cache=None,
)
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