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 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
