def testFutureFeatures(self): testcases = [ ('from __future__ import print_function', imputil.FutureFeatures(print_function=True)), ("""\ "module docstring" from __future__ import print_function """, imputil.FutureFeatures(print_function=True)), ("""\ "module docstring" from __future__ import print_function, with_statement from __future__ import nested_scopes """, imputil.FutureFeatures(print_function=True)), ('from __future__ import absolute_import', imputil.FutureFeatures(absolute_import=True)), ('from __future__ import absolute_import, print_function', imputil.FutureFeatures(absolute_import=True, print_function=True)), ('foo = 123\nfrom __future__ import print_function', imputil.FutureFeatures()), ('import os\nfrom __future__ import print_function', imputil.FutureFeatures()), ] for tc in testcases: source, want = tc mod = pythonparser.parse(textwrap.dedent(source)) _, got = imputil.parse_future_features(mod) self.assertEqual(want.__dict__, got.__dict__)
def _ParseAndVisit(source): mod = pythonparser.parse(source) _, future_features = imputil.parse_future_features(mod) importer = imputil.Importer(None, 'foo', 'foo.py', False) b = block.ModuleBlock(importer, '__main__', '<test>', source, future_features) visitor = stmt.StatementVisitor(b) visitor.visit(mod) return visitor
def main(script=None, modname=None): assert script and modname, 'Script "%s" or Modname "%s" is empty' % ( script, modname) gopath = os.getenv('GOPATH', None) if not gopath: print >> sys.stderr, 'GOPATH not set' return 1 with open(script) as py_file: py_contents = py_file.read() try: mod = pythonparser.parse(py_contents) except SyntaxError as e: print >> sys.stderr, '{}: line {}: invalid syntax: {}'.format( e.filename, e.lineno, e.text) return 2 # Do a pass for compiler directives from `from __future__ import *` statements try: future_node, future_features = imputil.parse_future_features(mod) except util.CompileError as e: print >> sys.stderr, str(e) return 2 importer = imputil.Importer(gopath, modname, script, future_features.absolute_import) full_package_name = modname.replace('.', '/') mod_block = block.ModuleBlock(importer, full_package_name, script, py_contents, future_features) visitor = stmt.StatementVisitor(mod_block, future_node) # Indent so that the module body is aligned with the goto labels. with visitor.writer.indent_block(): try: visitor.visit(mod) except util.ParseError as e: print >> sys.stderr, str(e) return 2 writer = util.Writer(sys.stdout) tmpl = textwrap.dedent("""\ package $package import πg "grumpy" var Code *πg.Code func init() { \tCode = πg.NewCode("<module>", $script, nil, 0, func(πF *πg.Frame, _ []*πg.Object) (*πg.Object, *πg.BaseException) { \t\tvar πR *πg.Object; _ = πR \t\tvar πE *πg.BaseException; _ = πE""") writer.write_tmpl(tmpl, package=modname.split('.')[-1], script=util.go_str(script)) with writer.indent_block(2): for s in sorted(mod_block.strings): writer.write('ß{} := πg.InternStr({})'.format(s, util.go_str(s))) writer.write_temp_decls(mod_block) writer.write_block(mod_block, visitor.writer.getvalue()) writer.write_tmpl(textwrap.dedent("""\ \t\treturn nil, πE \t}) \tπg.RegisterModule($modname, Code) }"""), modname=util.go_str(modname)) return 0