# # Cython Top Level # import os, sys, re, codecs if sys.version_info[:2] < (2, 2): sys.stderr.write("Sorry, Cython requires Python 2.2 or later\n") sys.exit(1) 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 Cython.Utils import replace_suffix from Cython import Utils import Transform verbose = 0 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] def __init__(self, include_directories): #self.modules = {"__builtin__" : BuiltinScope()} import Builtin 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 = %s, relative_to = %s, pos = %s, need_pxd = %s" % ( module_name, relative_to, pos, 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 %s" % pxd_pathname) pxd_tree = self.parse(pxd_pathname, scope.type_names, pxd = 1, full_module_name = module_name) 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. if "." in module_name: pxd_filename = "%s.pxd" % os.path.join(*module_name.split('.')) else: 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, full_module_name): # Parse the given source file and return a parse tree. f = Utils.open_source_file(source_filename, "rU") if isinstance(source_filename, unicode): name = source_filename else: filename_encoding = sys.getfilesystemencoding() if filename_encoding is None: filename_encoding = sys.getdefaultencoding() name = source_filename.decode(filename_encoding) s = PyrexScanner(f, name, source_encoding = f.encoding, type_names = type_names, context = self) try: tree = Parsing.p_module(s, pxd, full_module_name) finally: f.close() if Errors.num_errors > 0: raise CompileError return tree def extract_module_name(self, path, options): # 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, full_module_name = None): # Compile a Pyrex implementation file in this context # and return a CompilationResult. if not options: options = default_options result = CompilationResult() cwd = os.getcwd() if full_module_name is None: full_module_name, _ = os.path.splitext(source) full_module_name = re.sub(r'[\\/]', '.', full_module_name) full_module_name = re.sub(r'[^\w.]', '_', full_module_name) 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) c_stat = None if result.c_file: try: c_stat = os.stat(result.c_file) except EnvironmentError: pass module_name = full_module_name # self.extract_module_name(source, options) 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, full_module_name = full_module_name) tree.process_implementation(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: #os.unlink(result.c_file) Utils.castrate_file(result.c_file, c_stat) 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 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 transforms Transform.TransformSet Transforms to use on the parse tree 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: if isinstance(defaults, CompilationOptions): defaults = defaults.__dict__ else: defaults = default_options self.__dict__.update(defaults) self.__dict__.update(kw) 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 """ 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 def compile(source, options = None, c_compile = 0, c_link = 0, full_module_name = None): """ compile(source, options = default_options) Compile the given Cython 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, full_module_name) #------------------------------------------------------------------------ # # 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: sys.stderr.write("Cython version %s\n" % Version.version) if options.working_path!="": os.chdir(options.working_path) 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: 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, generate_pxi = 0, transforms = Transform.TransformSet(), working_path = "") 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