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Main.py
741 lines (655 loc) · 28.1 KB
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Main.py
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#
# Cython Top Level
#
import os, sys, re, codecs
if sys.version_info[:2] < (2, 3):
sys.stderr.write("Sorry, Cython requires Python 2.3 or later\n")
sys.exit(1)
try:
set
except NameError:
# Python 2.3
from sets import Set as set
from time import time
import Code
import Errors
import Parsing
import Version
from Scanning import PyrexScanner, FileSourceDescriptor
from Errors import PyrexError, CompileError, InternalError, error
from Symtab import BuiltinScope, ModuleScope
from Cython import Utils
from Cython.Utils import open_new_file, replace_suffix
import CythonScope
module_name_pattern = re.compile(r"[A-Za-z_][A-Za-z0-9_]*(\.[A-Za-z_][A-Za-z0-9_]*)*$")
verbose = 0
def dumptree(t):
# For quick debugging in pipelines
print t.dump()
return t
class CompilationData:
# 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:
# 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]
def __init__(self, include_directories, pragma_overrides):
#self.modules = {"__builtin__" : BuiltinScope()}
import Builtin, CythonScope
self.modules = {"__builtin__" : Builtin.builtin_scope}
self.modules["cython"] = CythonScope.create_cython_scope(self)
self.include_directories = include_directories
self.future_directives = set()
self.pragma_overrides = pragma_overrides
self.pxds = {} # full name -> node tree
standard_include_path = os.path.abspath(
os.path.join(os.path.dirname(__file__), '..', 'Includes'))
self.include_directories = include_directories + [standard_include_path]
def create_pipeline(self, pxd):
from Visitor import PrintTree
from ParseTreeTransforms import WithTransform, NormalizeTree, PostParse, PxdPostParse
from ParseTreeTransforms import AnalyseDeclarationsTransform, AnalyseExpressionsTransform
from ParseTreeTransforms import CreateClosureClasses, MarkClosureVisitor, DecoratorTransform
from ParseTreeTransforms import ResolveOptions
from Optimize import FlattenInListTransform, SwitchTransform, OptimizeRefcounting
from Buffer import IntroduceBufferAuxiliaryVars
from ModuleNode import check_c_classes
if pxd:
_check_c_classes = None
_specific_post_parse = PxdPostParse(self)
else:
_check_c_classes = check_c_classes
_specific_post_parse = None
return [
NormalizeTree(self),
PostParse(self),
_specific_post_parse,
ResolveOptions(self, self.pragma_overrides),
FlattenInListTransform(),
WithTransform(self),
DecoratorTransform(self),
AnalyseDeclarationsTransform(self),
IntroduceBufferAuxiliaryVars(self),
_check_c_classes,
AnalyseExpressionsTransform(self),
SwitchTransform(),
OptimizeRefcounting(self),
# SpecialFunctions(self),
# CreateClosureClasses(context),
]
def create_pyx_pipeline(self, options, result):
def generate_pyx_code(module_node):
module_node.process_implementation(options, result)
result.compilation_source = module_node.compilation_source
return result
def inject_pxd_code(module_node):
from textwrap import dedent
stats = module_node.body.stats
for name, (statlistnode, scope) in self.pxds.iteritems():
# Copy over function nodes to the module
# (this seems strange -- I believe the right concept is to split
# ModuleNode into a ModuleNode and a CodeGenerator, and tell that
# CodeGenerator to generate code both from the pyx and pxd ModuleNodes.
stats.append(statlistnode)
# Until utility code is moved to code generation phase everywhere,
# we need to copy it over to the main scope
module_node.scope.utility_code_list.extend(scope.utility_code_list)
return module_node
return ([
create_parse(self),
] + self.create_pipeline(pxd=False) + [
inject_pxd_code,
generate_pyx_code,
])
def create_pxd_pipeline(self, scope, module_name):
def parse_pxd(source_desc):
tree = self.parse(source_desc, scope, pxd=True,
full_module_name=module_name)
tree.scope = scope
tree.is_pxd = True
return tree
from CodeGeneration import ExtractPxdCode
# The pxd pipeline ends up with a CCodeWriter containing the
# code of the pxd, as well as a pxd scope.
return [parse_pxd] + self.create_pipeline(pxd=True) + [
ExtractPxdCode(self),
]
def process_pxd(self, source_desc, scope, module_name):
pipeline = self.create_pxd_pipeline(scope, module_name)
result = self.run_pipeline(pipeline, source_desc)
return result
def nonfatal_error(self, exc):
return Errors.report_error(exc)
def run_pipeline(self, pipeline, source):
err = None
data = source
try:
for phase in pipeline:
if phase is not None:
data = phase(data)
except CompileError, err:
# err is set
Errors.report_error(err)
except InternalError, err:
# Only raise if there was not an earlier error
if Errors.num_errors == 0:
raise
return (err, data)
def find_module(self, module_name,
relative_to = None, pos = None, need_pxd = 1):
# 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 not module_name_pattern.match(module_name):
if pos is None:
pos = (module_name, 0, 0)
raise CompileError(pos,
"'%s' is not a valid module name" % module_name)
if "." not in module_name and relative_to:
if debug_find_module:
print("...trying relative import")
scope = relative_to.lookup_submodule(module_name)
if not scope:
qualified_name = relative_to.qualify_name(module_name)
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")
scope = self
for name in module_name.split("."):
scope = scope.find_submodule(name)
if debug_find_module:
print("...scope =", scope)
if not scope.pxd_file_loaded:
if debug_find_module:
print("...pxd not loaded")
scope.pxd_file_loaded = 1
if not pxd_pathname:
if debug_find_module:
print("...looking for pxd file")
pxd_pathname = self.find_pxd_file(module_name, pos)
if debug_find_module:
print("......found ", pxd_pathname)
if not pxd_pathname and need_pxd:
error(pos, "'%s.pxd' not found" % module_name)
if pxd_pathname:
try:
if debug_find_module:
print("Context.find_module: Parsing %s" % pxd_pathname)
source_desc = FileSourceDescriptor(pxd_pathname)
err, result = self.process_pxd(source_desc, scope, module_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):
# Search include path 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.
return self.search_include_directories(qualified_name, ".pxd", pos)
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):
# Search the list of include directories for the given
# file name. If a source file position is given, first
# searches the directory containing that file. Returns
# None if not found, but does not report an error.
# The 'include' option will disable package dereferencing.
dirs = self.include_directories
if pos:
file_desc = pos[0]
if not isinstance(file_desc, FileSourceDescriptor):
raise RuntimeError("Only file sources for code supported")
if include:
dirs = [os.path.dirname(file_desc.filename)] + dirs
else:
dirs = [self.find_root_package_dir(file_desc.filename)] + dirs
dotted_filename = qualified_name + suffix
if not include:
names = qualified_name.split('.')
package_names = names[:-1]
module_name = names[-1]
module_filename = module_name + suffix
package_filename = "__init__" + suffix
for dir in dirs:
path = os.path.join(dir, dotted_filename)
if os.path.exists(path):
return path
if not include:
package_dir = self.check_package_dir(dir, package_names)
if package_dir is not None:
path = os.path.join(package_dir, module_filename)
if os.path.exists(path):
return path
path = os.path.join(dir, package_dir, module_name,
package_filename)
if os.path.exists(path):
return path
return None
def find_root_package_dir(self, file_path):
dir = os.path.dirname(file_path)
while self.is_package_dir(dir):
parent = os.path.dirname(dir)
if parent == dir:
break
dir = parent
return dir
def is_package_dir(self, dir):
package_init = os.path.join(dir, "__init__.py")
return os.path.exists(package_init) or \
os.path.exists(package_init + "x") # same with .pyx
def check_package_dir(self, dir, package_names):
package_dir = os.path.join(dir, *package_names)
if not os.path.exists(package_dir):
return None
for dirname in package_names:
dir = os.path.join(dir, dirname)
if not self.is_package_dir(dir):
return None
return package_dir
def c_file_out_of_date(self, source_path):
c_path = Utils.replace_suffix(source_path, ".c")
if not os.path.exists(c_path):
return 1
c_time = Utils.modification_time(c_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 true if the given directory is a package directory.
for filename in ("__init__.py", "__init__.pyx"):
path = os.path.join(dir_path, filename)
if os.path.exists(path):
return 1
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 = Utils.encode_filename(source_desc.filename)
# Parse the given source file and return a parse tree.
try:
f = Utils.open_source_file(source_filename, "rU")
try:
s = PyrexScanner(f, source_desc, source_encoding = f.encoding,
scope = scope, context = self)
tree = Parsing.p_module(s, pxd, full_module_name)
finally:
f.close()
except UnicodeDecodeError, msg:
#import traceback
#traceback.print_exc()
error((source_desc, 0, 0), "Decoding error, missing or incorrect coding=<encoding-name> at top of source (%s)" % msg)
if Errors.num_errors > 0:
raise CompileError
return tree
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
if module_name == "__init__":
dir, module_name = os.path.split(dir)
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):
if options.use_listing_file:
result.listing_file = Utils.replace_suffix(source, ".lis")
Errors.open_listing_file(result.listing_file,
echo_to_stderr = options.errors_to_stderr)
else:
Errors.open_listing_file(None)
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
if result.c_file and not options.c_only and c_compile:
result.object_file = c_compile(result.c_file,
verbose_flag = options.show_version,
cplus = options.cplus)
if not options.obj_only and c_link:
result.extension_file = c_link(result.object_file,
extra_objects = options.objects,
verbose_flag = options.show_version,
cplus = options.cplus)
def create_parse(context):
def parse(compsrc):
source_desc = compsrc.source_desc
full_module_name = compsrc.full_module_name
initial_pos = (source_desc, 1, 0)
scope = context.find_module(full_module_name, pos = initial_pos, need_pxd = 0)
tree = context.parse(source_desc, scope, pxd = 0, full_module_name = full_module_name)
tree.compilation_source = compsrc
tree.scope = scope
tree.is_pxd = False
return tree
return parse
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
if options.output_file:
result.c_file = os.path.join(compilation_source.cwd, options.output_file)
else:
if options.cplus:
c_suffix = ".cpp"
else:
c_suffix = ".c"
result.c_file = Utils.replace_suffix(source_desc.filename, c_suffix)
return result
def run_pipeline(source, options, full_module_name = None):
# Set up context
context = Context(options.include_path, options.pragma_overrides)
# Set up source object
cwd = os.getcwd()
source_desc = FileSourceDescriptor(os.path.join(cwd, source))
full_module_name = full_module_name or context.extract_module_name(source, options)
source = CompilationSource(source_desc, full_module_name, cwd)
# Set up result object
result = create_default_resultobj(source, options)
# Get pipeline
pipeline = context.create_pyx_pipeline(options, result)
context.setup_errors(options)
err, enddata = context.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:
"""
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
recursive boolean Recursively find and compile dependencies
timestamps boolean Only compile changed source files. If None,
defaults to true when recursive is true.
verbose boolean Always print source names being compiled
quiet boolean Don't print source names in recursive mode
pragma_overrides dict Overrides for pragma options (see Options.py)
Following options are experimental and only used on MacOSX:
c_only boolean Stop after generating C file (default)
obj_only boolean Stop after compiling to .o file
objects [string] Extra .o files to link with
cplus boolean Compile as c++ code
"""
def __init__(self, defaults = None, c_compile = 0, c_link = 0, **kw):
self.include_path = []
self.objects = []
if defaults:
if isinstance(defaults, CompilationOptions):
defaults = defaults.__dict__
else:
defaults = default_options
self.__dict__.update(defaults)
self.__dict__.update(kw)
if c_compile:
self.c_only = 0
if c_link:
self.obj_only = 0
class CompilationResult:
"""
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.
"""
sources = [os.path.abspath(source) for source in sources]
processed = set()
results = CompilationResultSet()
recursive = options.recursive
timestamps = options.timestamps
if timestamps is None:
timestamps = recursive
verbose = options.verbose or ((recursive or timestamps) and not options.quiet)
for source in sources:
if source not in processed:
# Compiling multiple sources in one context doesn't quite
# work properly yet.
if not timestamps or context.c_file_out_of_date(source):
if verbose:
sys.stderr.write("Compiling %s\n" % source)
result = run_pipeline(source, options)
results.add(source, result)
processed.add(source)
if recursive:
for module_name in context.find_cimported_module_names(source):
path = context.find_pyx_file(module_name, [source])
if path:
sources.append(path)
else:
sys.stderr.write(
"Cannot find .pyx file for cimported module '%s'\n" % module_name)
return results
def compile(source, options = None, c_compile = 0, c_link = 0,
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, c_compile = c_compile,
c_link = c_link, **kwds)
if isinstance(source, basestring) and not options.timestamps \
and not options.recursive:
return compile_single(source, options, full_module_name)
else:
return compile_multiple(source, options)
#------------------------------------------------------------------------
#
# Main command-line entry point
#
#------------------------------------------------------------------------
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.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), 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,
c_only = 1,
obj_only = 1,
cplus = 0,
output_file = None,
annotate = False,
generate_pxi = 0,
working_path = "",
recursive = 0,
timestamps = None,
verbose = 0,
quiet = 0,
pragma_overrides = {}
)
if sys.platform == "mac":
from Cython.Mac.MacSystem import c_compile, c_link, CCompilerError
default_options['use_listing_file'] = 1
elif sys.platform == "darwin":
from Cython.Mac.DarwinSystem import c_compile, c_link, CCompilerError
else:
c_compile = None
c_link = None