| """Compiler helpers for the debugger.""" |
|
|
| import os |
| import sys |
| import tempfile |
|
|
| from IPython.core.compilerop import CachingCompiler |
|
|
|
|
| def murmur2_x86(data, seed): |
| """Get the murmur2 hash.""" |
| m = 0x5BD1E995 |
| data = [chr(d) for d in str.encode(data, "utf8")] |
| length = len(data) |
| h = seed ^ length |
| rounded_end = length & 0xFFFFFFFC |
| for i in range(0, rounded_end, 4): |
| k = ( |
| (ord(data[i]) & 0xFF) |
| | ((ord(data[i + 1]) & 0xFF) << 8) |
| | ((ord(data[i + 2]) & 0xFF) << 16) |
| | (ord(data[i + 3]) << 24) |
| ) |
| k = (k * m) & 0xFFFFFFFF |
| k ^= k >> 24 |
| k = (k * m) & 0xFFFFFFFF |
|
|
| h = (h * m) & 0xFFFFFFFF |
| h ^= k |
|
|
| val = length & 0x03 |
| k = 0 |
| if val == 3: |
| k = (ord(data[rounded_end + 2]) & 0xFF) << 16 |
| if val in [2, 3]: |
| k |= (ord(data[rounded_end + 1]) & 0xFF) << 8 |
| if val in [1, 2, 3]: |
| k |= ord(data[rounded_end]) & 0xFF |
| h ^= k |
| h = (h * m) & 0xFFFFFFFF |
|
|
| h ^= h >> 13 |
| h = (h * m) & 0xFFFFFFFF |
| h ^= h >> 15 |
|
|
| return h |
|
|
|
|
| convert_to_long_pathname = lambda filename: filename |
|
|
| if sys.platform == "win32": |
| try: |
| import ctypes |
| from ctypes.wintypes import DWORD, LPCWSTR, LPWSTR, MAX_PATH |
|
|
| _GetLongPathName = ctypes.windll.kernel32.GetLongPathNameW |
| _GetLongPathName.argtypes = [LPCWSTR, LPWSTR, DWORD] |
| _GetLongPathName.restype = DWORD |
|
|
| def _convert_to_long_pathname(filename): |
| buf = ctypes.create_unicode_buffer(MAX_PATH) |
| rv = _GetLongPathName(filename, buf, MAX_PATH) |
| if rv != 0 and rv <= MAX_PATH: |
| filename = buf.value |
| return filename |
|
|
| |
| _convert_to_long_pathname(__file__) |
| except Exception: |
| pass |
| else: |
| convert_to_long_pathname = _convert_to_long_pathname |
|
|
|
|
| def get_tmp_directory(): |
| """Get a temp directory.""" |
| tmp_dir = convert_to_long_pathname(tempfile.gettempdir()) |
| pid = os.getpid() |
| return tmp_dir + os.sep + "ipykernel_" + str(pid) |
|
|
|
|
| def get_tmp_hash_seed(): |
| """Get a temp hash seed.""" |
| return 0xC70F6907 |
|
|
|
|
| def get_file_name(code): |
| """Get a file name.""" |
| cell_name = os.environ.get("IPYKERNEL_CELL_NAME") |
| if cell_name is None: |
| name = murmur2_x86(code, get_tmp_hash_seed()) |
| cell_name = get_tmp_directory() + os.sep + str(name) + ".py" |
| return cell_name |
|
|
|
|
| class XCachingCompiler(CachingCompiler): |
| """A custom caching compiler.""" |
|
|
| def __init__(self, *args, **kwargs): |
| """Initialize the compiler.""" |
| super().__init__(*args, **kwargs) |
| self.log = None |
|
|
| def get_code_name(self, raw_code, code, number): |
| """Get the code name.""" |
| return get_file_name(raw_code) |
|
|
