diff options
Diffstat (limited to 'Lib/py_compile.py')
| -rw-r--r-- | Lib/py_compile.py | 56 |
1 files changed, 17 insertions, 39 deletions
diff --git a/Lib/py_compile.py b/Lib/py_compile.py index 3cb46d0..d255a2d 100644 --- a/Lib/py_compile.py +++ b/Lib/py_compile.py @@ -3,17 +3,13 @@ This module has intimate knowledge of the format of .pyc files. """ -import builtins -import errno import imp -import marshal +import importlib._bootstrap +import importlib.machinery import os import sys -import tokenize import traceback -MAGIC = imp.get_magic() - __all__ = ["compile", "main", "PyCompileError"] @@ -65,13 +61,6 @@ class PyCompileError(Exception): return self.msg -def wr_long(f, x): - """Internal; write a 32-bit int to a file in little-endian order.""" - f.write(bytes([x & 0xff, - (x >> 8) & 0xff, - (x >> 16) & 0xff, - (x >> 24) & 0xff])) - def compile(file, cfile=None, dfile=None, doraise=False, optimize=-1): """Byte-compile one Python source file to Python bytecode. @@ -108,17 +97,16 @@ def compile(file, cfile=None, dfile=None, doraise=False, optimize=-1): byte-compile all installed files (or all files in selected directories). """ - with tokenize.open(file) as f: - try: - st = os.fstat(f.fileno()) - except AttributeError: - st = os.stat(file) - timestamp = int(st.st_mtime) - size = st.st_size & 0xFFFFFFFF - codestring = f.read() + if cfile is None: + if optimize >= 0: + cfile = imp.cache_from_source(file, debug_override=not optimize) + else: + cfile = imp.cache_from_source(file) + loader = importlib.machinery.SourceFileLoader('<py_compile>', file) + source_bytes = loader.get_data(file) try: - codeobject = builtins.compile(codestring, dfile or file, 'exec', - optimize=optimize) + code = loader.source_to_code(source_bytes, dfile or file, + _optimize=optimize) except Exception as err: py_exc = PyCompileError(err.__class__, err, dfile or file) if doraise: @@ -126,26 +114,16 @@ def compile(file, cfile=None, dfile=None, doraise=False, optimize=-1): else: sys.stderr.write(py_exc.msg + '\n') return - if cfile is None: - if optimize >= 0: - cfile = imp.cache_from_source(file, debug_override=not optimize) - else: - cfile = imp.cache_from_source(file) try: dirname = os.path.dirname(cfile) if dirname: os.makedirs(dirname) - except OSError as error: - if error.errno != errno.EEXIST: - raise - with open(cfile, 'wb') as fc: - fc.write(b'\0\0\0\0') - wr_long(fc, timestamp) - wr_long(fc, size) - marshal.dump(codeobject, fc) - fc.flush() - fc.seek(0, 0) - fc.write(MAGIC) + except FileExistsError: + pass + source_stats = loader.path_stats(file) + bytecode = importlib._bootstrap._code_to_bytecode(code, + source_stats['mtime'], len(source_bytes)) + loader._cache_bytecode(file, cfile, bytecode) return cfile def main(args=None): |