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#
# Pyrex Top Level
#
import os, re, sys
if sys.version_info[:2] < (2, 3):
print >>sys.stderr, "Sorry, Pyrex requires Python 2.3 or later"
sys.exit(1)
import os
from time import time
import Builtin
import Code
import Errors
import Parsing
import Version
from Errors import PyrexError, CompileError, error
from Scanning import PyrexScanner
from Symtab import BuiltinScope, DefinitionScope, ImplementationScope
from Pyrex.Utils import set, replace_suffix, modification_time, \
file_newer_than, castrate_file, map_suffix
from Filenames import cplus_suffix, pxd_suffixes, pyx_suffixes, \
package_init_files, pyx_to_c_suffix
verbose = 0
debug_timestamps = 0
module_name_pattern = re.compile(
r"[A-Za-z_][A-Za-z0-9_]*(\.[A-Za-z_][A-Za-z0-9_]*)*$")
class Context:
# This class encapsulates the context needed for compiling
# one or more Pyrex implementation files along with their
# associated and imported declaration files. It holds
# the root of the module import namespace and the list
# of directories to search for include files.
#
# modules {string : DefinitionScope}
# include_directories [string]
def __init__(self, include_directories):
self.modules = {"__builtin__" : Builtin.builtin_scope}
self.include_directories = include_directories
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 =", module_name, \
"relative_to =", relative_to, "pos =", pos, "need_pxd =", need_pxd
scope = None
pxd_pathname = None
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, "Cannot find .pxd file for module '%s'" % module_name)
if pxd_pathname:
try:
if debug_find_module:
print "Context.find_module: Parsing", pxd_pathname
pxd_tree = self.parse(pxd_pathname, scope, pxd = 1)
pxd_tree.analyse_declarations(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_package_directories(qualified_name, pxd_suffixes, 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_package_directories(qualified_name, pyx_suffixes, pos)
def search_package_directories(self, qualified_name, suffixes, pos):
dotted_filenames = [qualified_name + suffix for suffix in suffixes]
if pos:
here = os.path.dirname(pos[0])
for dotted_filename in dotted_filenames:
path = os.path.join(here, dotted_filename)
if os.path.exists(path):
return path
dirs = self.include_directories
if pos:
here = self.find_root_package_dir(pos[0])
dirs = [here] + dirs
names = qualified_name.split(".")
package_names = names[:-1]
module_name = names[-1]
filenames = [module_name + suffix for suffix in suffixes]
for root in dirs:
for dotted_filename in dotted_filenames:
path = os.path.join(root, dotted_filename)
if os.path.exists(path):
return path
dir = self.descend_to_package_dir(root, package_names)
if dir:
for filename in filenames:
path = os.path.join(dir, filename)
if os.path.exists(path):
return path
for init_filename in package_init_files:
path = os.path.join(dir, module_name, init_filename)
if os.path.exists(path):
return path
def find_root_package_dir(self, file_path):
# Given the full pathname of a source file, find the directory
# containing the top-level package that it ultimately belongs to.
dir = os.path.dirname(file_path)
while 1:
if not self.is_package_dir(dir):
return dir
parent = os.path.dirname(dir)
if parent == dir:
return dir
dir = parent
def descend_to_package_dir(self, root_dir, package_names):
# Starting from the given root directory, look for a nested
# succession of package directories. Returns the full pathname
# of the innermost one, or None.
dir = root_dir
for name in package_names:
dir = os.path.join(dir, name)
if self.is_package_dir(dir):
return dir
def is_package_dir(self, dir_path):
# Return true if the given directory is a package directory.
for filename in package_init_files:
path = os.path.join(dir_path, filename)
if os.path.exists(path):
return 1
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)
if not path:
error(pos, "'%s' not found" % filename)
return path
def search_include_directories(self, filename, pos):
# 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.
dirs = self.include_directories
if pos:
here_dir = os.path.dirname(pos[0])
dirs = [here_dir] + dirs
for dir in dirs:
path = os.path.join(dir, filename)
if os.path.exists(path):
return path
return None
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 = DefinitionScope(name,
parent_module = None, context = self)
self.modules[name] = scope
return scope
def parse(self, source_filename, scope, pxd):
# Parse the given source file and return a parse tree.
f = open(source_filename, "rU")
s = PyrexScanner(f, source_filename, scope = scope, context = self)
try:
tree = Parsing.p_module(s, pxd)
finally:
f.close()
if Errors.num_errors > 0:
raise CompileError
return tree
def extract_module_name(self, path):
# 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 "." not in 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.insert(0, package_name)
dir = parent
module_name = ".".join(names)
if not module_name_pattern.match(module_name):
raise CompileError((path, 0, 0),
"'%s' is not a valid module name" % module_name)
return module_name
def dep_file_out_of_date(self, source_path):
dep_path = replace_suffix(source_path, ".dep")
if not os.path.exists(dep_path):
return 1
dep_time = modification_time(dep_path)
return file_newer_than(source_path, dep_time)
def c_file_out_of_date(self, source_path):
if debug_timestamps:
print "Checking whether", source_path, "is out of date"
c_path = map_suffix(source_path, pyx_to_c_suffix, ".c")
if not os.path.exists(c_path):
if debug_timestamps:
print "...yes, c file doesn't exist"
return 1
c_time = modification_time(c_path)
if file_newer_than(source_path, c_time):
if debug_timestamps:
print "...yes, newer than c file"
return 1
pos = [source_path]
module_name = self.extract_module_name(source_path)
pxd_path = self.find_pxd_file(module_name, pos)
if pxd_path and file_newer_than(pxd_path, c_time):
if debug_timestamps:
print "...yes, pxd file newer than c file"
return 1
dep_path = replace_suffix(source_path, ".dep")
if not os.path.exists(dep_path):
if debug_timestamps:
print "...yes, dep file does not exist"
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 file_newer_than(dep_path, c_time):
if debug_timestamps:
print "...yes,", dep_path, "newer than c file"
return 1
if debug_timestamps:
print "...no"
def find_cimported_module_names(self, source_path):
for kind, name in self.read_dependency_file(source_path):
if kind == "cimport":
yield name
def read_dependency_file(self, source_path):
dep_path = replace_suffix(source_path, ".dep")
if os.path.exists(dep_path):
f = open(dep_path, "rU")
for line in f.readlines():
chunks = line.strip().split(" ", 1)
if len(chunks) == 2:
yield chunks
f.close()
def compile(self, source, options = None):
# Compile a Pyrex implementation file in this context
# and return a CompilationResult.
if not options:
options = default_options
result = CompilationResult()
cwd = os.getcwd()
source = os.path.join(cwd, source)
if options.use_listing_file:
result.listing_file = replace_suffix(source, ".lis")
Errors.open_listing_file(result.listing_file,
echo_to_stderr = options.errors_to_stderr)
else:
Errors.open_listing_file(None)
if options.output_file:
result.c_file = os.path.join(cwd, options.output_file)
else:
if options.cplus:
result.c_file = replace_suffix(source, cplus_suffix)
else:
result.c_file = map_suffix(source, pyx_to_c_suffix, ".c")
module_name = self.extract_module_name(source)
initial_pos = (source, 1, 0)
def_scope = self.find_module(module_name, pos = initial_pos, need_pxd = 0)
imp_scope = ImplementationScope(def_scope)
errors_occurred = False
try:
tree = self.parse(source, imp_scope, pxd = 0)
tree.process_implementation(imp_scope, options, result)
except CompileError:
errors_occurred = True
Errors.close_listing_file()
result.num_errors = Errors.num_errors
if result.num_errors > 0:
errors_occurred = True
if errors_occurred and result.c_file:
try:
st = os.stat(source)
castrate_file(result.c_file, st)
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)
return result
#------------------------------------------------------------------------
#
# Main Python entry points
#
#------------------------------------------------------------------------
class CompilationOptions:
"""
Options to the Pyrex 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
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 Pyrex 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
"""
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
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):
"""
compile_single(source, options)
Compile the given Pyrex implementation file and return a CompilationResult.
Always compiles a single file; does not perform timestamp checking or
recursion.
"""
context = Context(options.include_path)
return context.compile(source, options)
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()
context = Context(options.include_path)
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:
if not timestamps or context.c_file_out_of_date(source):
if verbose:
print >>sys.stderr, "Compiling", source
result = context.compile(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:
print >>sys.stderr, \
"Cannot find .pyx file for cimported module '%s'" % module_name
return results
def compile(source, options = None, c_compile = 0, c_link = 0, **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)
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:
print >>sys.stderr, "Pyrex version %s" % Version.version
try:
result = compile(sources, options)
if result.num_errors > 0:
any_failures = 1
except EnvironmentError, e:
print >>sys.stderr, e
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,
generate_pxi = 0,
recursive = 0,
timestamps = None,
verbose = 0,
quiet = 0)
if sys.platform == "mac":
from Pyrex.Mac.MacSystem import c_compile, c_link, CCompilerError
default_options['use_listing_file'] = 1
elif sys.platform == "darwin":
from Pyrex.Mac.DarwinSystem import c_compile, c_link, CCompilerError
else:
c_compile = None
c_link = None
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