#
# Pyrex Top Level
#
import os, sys
if sys.version_info[:2] < (2, 2):
print >>sys.stderr, "Sorry, Pyrex requires Python 2.2 or later"
sys.exit(1)
import os
from time import time
import Version
from Scanning import PyrexScanner
import Errors
from Errors import PyrexError, CompileError, error
import Parsing
from Symtab import BuiltinScope, ModuleScope
import Code
from Pyrex.Utils import replace_suffix
verbose = 0
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 includes
# the root of the module import namespace and the list
# of directories to search for include files.
#
# modules {string : ModuleScope}
# include_directories [string]
def __init__(self, include_directories):
self.modules = {"__builtin__" : BuiltinScope()}
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, "'%s.pxd' not found" % module_name)
if pxd_pathname:
try:
if debug_find_module:
print "Context.find_module: Parsing", pxd_pathname
pxd_tree = self.parse(pxd_pathname, scope.type_names, pxd = 1)
pxd_tree.analyse_declarations(scope)
except CompileError:
pass
return scope
def find_pxd_file(self, module_name, pos):
# Search include directories for the .pxd file
# corresponding to the given (full) module name.
pxd_filename = "%s.pxd" % module_name
return self.search_include_directories(pxd_filename, 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)
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 = ModuleScope(name,
parent_module = None, context = self)
self.modules[name] = scope
return scope
def parse(self, source_filename, type_names, pxd):
# Parse the given source file and return a parse tree.
f = open(source_filename, "rU")
s = PyrexScanner(f, source_filename,
type_names = type_names, 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):
# Get the module name out of a source file pathname.
_, tail = os.path.split(path)
name, _ = os.path.splitext(tail)
return name
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:
c_suffix = ".cpp"
else:
c_suffix = ".c"
result.c_file = replace_suffix(source, c_suffix)
module_name = self.extract_module_name(source)
initial_pos = (source, 1, 0)
scope = self.find_module(module_name, pos = initial_pos, need_pxd = 0)
errors_occurred = False
try:
tree = self.parse(source, scope.type_names, pxd = 0)
tree.process_implementation(scope, 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:
try:
os.unlink(result.c_file)
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 point
#
#------------------------------------------------------------------------
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
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, **kw):
self.include_path = []
self.objects = []
if defaults:
self.__dict__.update(defaults.__dict__)
self.__dict__.update(kw)
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
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.listing_file = None
self.object_file = None
self.extension_file = None
def compile(source, options = None, c_compile = 0, c_link = 0):
"""
compile(source, options = default_options)
Compile the given Pyrex implementation file and return
a CompilationResult object describing what was produced.
"""
if not options:
options = default_options
options = CompilationOptions(defaults = options)
if c_compile:
options.c_only = 0
if c_link:
options.obj_only = 0
context = Context(options.include_path)
return context.compile(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 = default_options
sources = args
if options.show_version:
print >>sys.stderr, "Pyrex version %s" % Version.version
context = Context(options.include_path)
for source in sources:
try:
result = context.compile(source, options)
if result.num_errors > 0:
any_failures = 1
except PyrexError, e:
print >>sys.stderr, e
any_failures = 1
if any_failures:
sys.exit(1)
#------------------------------------------------------------------------
#
# Set the default options depending on the platform
#
#------------------------------------------------------------------------
default_options = CompilationOptions(
show_version = 0,
use_listing_file = 0,
errors_to_stderr = 1,
c_only = 1,
obj_only = 1,
cplus = 0,
output_file = None)
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
elif 'linux' in sys.platform:
from Pyrex.PC.LinuxSystem import c_compile, c_link, CCompilerError
else:
c_compile = None
c_link = None
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