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Port py_compile over to importlib

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This commit is contained in:
Brett Cannon 2013-01-26 08:48:36 -05:00
parent 80512de43b
commit 14581d5dc4
4 changed files with 4375 additions and 4362 deletions
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21
Lib/importlib/_bootstrap.py
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@ -689,6 +689,15 @@ def _compile_bytecode(data, name=None, bytecode_path=None, source_path=None):
raise ImportError("Non-code object in {!r}".format(bytecode_path),
name=name, path=bytecode_path)
def _code_to_bytecode(code, mtime=0, source_size=0):
"""Compile a code object into bytecode for writing out to a byte-compiled
file."""
data = bytearray(_MAGIC_BYTES)
data.extend(_w_long(mtime))
data.extend(_w_long(source_size))
data.extend(marshal.dumps(code))
return data
# Loaders #####################################################################
@ -951,13 +960,13 @@ class SourceLoader(_LoaderBasics):
raise ImportError("Failed to decode source file",
name=fullname) from exc
def source_to_code(self, data, path):
def source_to_code(self, data, path, *, _optimize=-1):
"""Return the code object compiled from source.
The 'data' argument can be any object type that compile() supports.
"""
return _call_with_frames_removed(compile, data, path, 'exec',
dont_inherit=True)
dont_inherit=True, optimize=_optimize)
def get_code(self, fullname):
"""Concrete implementation of InspectLoader.get_code.
@ -1000,11 +1009,9 @@ class SourceLoader(_LoaderBasics):
code_object = self.source_to_code(source_bytes, source_path)
_verbose_message('code object from {}', source_path)
if (not sys.dont_write_bytecode and bytecode_path is not None and
source_mtime is not None):
data = bytearray(_MAGIC_BYTES)
data.extend(_w_long(source_mtime))
data.extend(_w_long(len(source_bytes)))
data.extend(marshal.dumps(code_object))
source_mtime is not None):
data = _code_to_bytecode(code_object, source_mtime,
len(source_bytes))
try:
self._cache_bytecode(source_path, bytecode_path, data)
_verbose_message('wrote {!r}', bytecode_path)