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| 1 | +# Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved. |
| 2 | +# DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 3 | +# |
| 4 | +# The Universal Permissive License (UPL), Version 1.0 |
| 5 | +# |
| 6 | +# Subject to the condition set forth below, permission is hereby granted to any |
| 7 | +# person obtaining a copy of this software, associated documentation and/or |
| 8 | +# data (collectively the "Software"), free of charge and under any and all |
| 9 | +# copyright rights in the Software, and any and all patent rights owned or |
| 10 | +# freely licensable by each licensor hereunder covering either (i) the |
| 11 | +# unmodified Software as contributed to or provided by such licensor, or (ii) |
| 12 | +# the Larger Works (as defined below), to deal in both |
| 13 | +# |
| 14 | +# (a) the Software, and |
| 15 | +# |
| 16 | +# (b) any piece of software and/or hardware listed in the lrgrwrks.txt file if |
| 17 | +# one is included with the Software each a "Larger Work" to which the Software |
| 18 | +# is contributed by such licensors), |
| 19 | +# |
| 20 | +# without restriction, including without limitation the rights to copy, create |
| 21 | +# derivative works of, display, perform, and distribute the Software and make, |
| 22 | +# use, sell, offer for sale, import, export, have made, and have sold the |
| 23 | +# Software and the Larger Work(s), and to sublicense the foregoing rights on |
| 24 | +# either these or other terms. |
| 25 | +# |
| 26 | +# This license is subject to the following condition: |
| 27 | +# |
| 28 | +# The above copyright notice and either this complete permission notice or at a |
| 29 | +# minimum a reference to the UPL must be included in all copies or substantial |
| 30 | +# portions of the Software. |
| 31 | +# |
| 32 | +# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 33 | +# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 34 | +# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| 35 | +# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 36 | +# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| 37 | +# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| 38 | +# SOFTWARE. |
| 39 | +import sys |
| 40 | +import _frozen_importlib |
| 41 | + |
| 42 | + |
| 43 | +class JavaPackageLoader: |
| 44 | + @staticmethod |
| 45 | + def _make_getattr(modname): |
| 46 | + if modname.startswith("java."): |
| 47 | + modname_wo = modname[len("java."):] + "." |
| 48 | + else: |
| 49 | + modname_wo = None |
| 50 | + modname = modname + "." |
| 51 | + def __getattr__(key, default=None): |
| 52 | + try: |
| 53 | + return type(modname + key) |
| 54 | + except KeyError: |
| 55 | + pass |
| 56 | + if modname_wo: |
| 57 | + try: |
| 58 | + return type(modname_wo + key) |
| 59 | + except KeyError: |
| 60 | + pass |
| 61 | + raise AttributeError(key) |
| 62 | + return __getattr__ |
| 63 | + |
| 64 | + @staticmethod |
| 65 | + def create_module(spec): |
| 66 | + newmod = _frozen_importlib._new_module(spec.name) |
| 67 | + newmod.__getattr__ = JavaPackageLoader._make_getattr(spec.name) |
| 68 | + newmod.__path__ = __path__ |
| 69 | + return newmod |
| 70 | + |
| 71 | + @staticmethod |
| 72 | + def exec_module(module): |
| 73 | + pass |
| 74 | + |
| 75 | + |
| 76 | +class JavaTypeLoader: |
| 77 | + @staticmethod |
| 78 | + def create_module(spec): |
| 79 | + pass |
| 80 | + |
| 81 | + @staticmethod |
| 82 | + def exec_module(module): |
| 83 | + try: |
| 84 | + sys.modules[module.__name__] = type(module.__name__) |
| 85 | + except KeyError: |
| 86 | + if module.__name__.startswith("java."): |
| 87 | + sys.modules[module.__name__] = type(module.__name__[len("java."):]) |
| 88 | + else: |
| 89 | + raise |
| 90 | + |
| 91 | + |
| 92 | +class JavaImportFinder: |
| 93 | + @staticmethod |
| 94 | + def find_spec(fullname, path, target=None): |
| 95 | + if path and path == __path__: |
| 96 | + if fullname.rpartition('.')[2].islower(): |
| 97 | + return _frozen_importlib.ModuleSpec(fullname, JavaPackageLoader, is_package=True) |
| 98 | + else: |
| 99 | + return _frozen_importlib.ModuleSpec(fullname, JavaTypeLoader, is_package=False) |
| 100 | + |
| 101 | + |
| 102 | +sys.meta_path.append(JavaImportFinder) |
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