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| 1 | +# The MIT License |
| 2 | +# |
| 3 | +# Copyright (c) 2009-2012 the bpython authors. |
| 4 | +# |
| 5 | +# Permission is hereby granted, free of charge, to any person obtaining a copy |
| 6 | +# of this software and associated documentation files (the "Software"), to deal |
| 7 | +# in the Software without restriction, including without limitation the rights |
| 8 | +# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| 9 | +# copies of the Software, and to permit persons to whom the Software is |
| 10 | +# furnished to do so, subject to the following conditions: |
| 11 | +# |
| 12 | +# The above copyright notice and this permission notice shall be included in |
| 13 | +# all copies or substantial portions of the Software. |
| 14 | +# |
| 15 | +# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 16 | +# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 17 | +# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| 18 | +# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 19 | +# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| 20 | +# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| 21 | +# THE SOFTWARE. |
| 22 | +# |
| 23 | + |
| 24 | +import __builtin__ |
| 25 | +import __main__ |
| 26 | +import rlcompleter |
| 27 | +import re |
| 28 | +from bpython import inspection |
| 29 | + |
| 30 | +# Needed for special handling of __abstractmethods__ |
| 31 | +# abc only exists since 2.6, so check both that it exists and that it's |
| 32 | +# the one we're expecting |
| 33 | +try: |
| 34 | + import abc |
| 35 | + abc.ABCMeta |
| 36 | + has_abc = True |
| 37 | +except (ImportError, AttributeError): |
| 38 | + has_abc = False |
| 39 | + |
| 40 | +# Autocomplete modes |
| 41 | +SIMPLE = 'simple' |
| 42 | +SUBSTRING = 'substring' |
| 43 | +FUZZY = 'fuzzy' |
| 44 | + |
| 45 | +class Autocomplete(rlcompleter.Completer): |
| 46 | + """ |
| 47 | + """ |
| 48 | + |
| 49 | + def __init__(self, namespace = None, config = None): |
| 50 | + rlcompleter.Completer.__init__(self, namespace) |
| 51 | + self.locals = namespace |
| 52 | + if hasattr(config, 'autocomplete_mode'): |
| 53 | + self.autocomplete_mode = config.autocomplete_mode |
| 54 | + else: |
| 55 | + self.autocomplete_mode = SUBSTRING |
| 56 | + |
| 57 | + def attr_matches(self, text): |
| 58 | + """Taken from rlcompleter.py and bent to my will. |
| 59 | + """ |
| 60 | + |
| 61 | + # Gna, Py 2.6's rlcompleter searches for __call__ inside the |
| 62 | + # instance instead of the type, so we monkeypatch to prevent |
| 63 | + # side-effects (__getattr__/__getattribute__) |
| 64 | + m = re.match(r"(\w+(\.\w+)*)\.(\w*)", text) |
| 65 | + if not m: |
| 66 | + return [] |
| 67 | + |
| 68 | + expr, attr = m.group(1, 3) |
| 69 | + if expr.isdigit(): |
| 70 | + # Special case: float literal, using attrs here will result in |
| 71 | + # a SyntaxError |
| 72 | + return [] |
| 73 | + obj = eval(expr, self.locals) |
| 74 | + with inspection.AttrCleaner(obj): |
| 75 | + matches = self.attr_lookup(obj, expr, attr) |
| 76 | + return matches |
| 77 | + |
| 78 | + def attr_lookup(self, obj, expr, attr): |
| 79 | + """Second half of original attr_matches method factored out so it can |
| 80 | + be wrapped in a safe try/finally block in case anything bad happens to |
| 81 | + restore the original __getattribute__ method.""" |
| 82 | + words = dir(obj) |
| 83 | + if hasattr(obj, '__class__'): |
| 84 | + words.append('__class__') |
| 85 | + words = words + rlcompleter.get_class_members(obj.__class__) |
| 86 | + if has_abc and not isinstance(obj.__class__, abc.ABCMeta): |
| 87 | + try: |
| 88 | + words.remove('__abstractmethods__') |
| 89 | + except ValueError: |
| 90 | + pass |
| 91 | + |
| 92 | + matches = [] |
| 93 | + n = len(attr) |
| 94 | + for word in words: |
| 95 | + if self.method_match(word, n, attr) and word != "__builtins__": |
| 96 | + matches.append("%s.%s" % (expr, word)) |
| 97 | + return matches |
| 98 | + |
| 99 | + def _callable_postfix(self, value, word): |
| 100 | + """rlcompleter's _callable_postfix done right.""" |
| 101 | + with inspection.AttrCleaner(value): |
| 102 | + if inspection.is_callable(value): |
| 103 | + word += '(' |
| 104 | + return word |
| 105 | + |
| 106 | + def global_matches(self, text): |
| 107 | + """Compute matches when text is a simple name. |
| 108 | + Return a list of all keywords, built-in functions and names currently |
| 109 | + defined in self.namespace that match. |
| 110 | + """ |
| 111 | + |
| 112 | + hash = {} |
| 113 | + n = len(text) |
| 114 | + import keyword |
| 115 | + for word in keyword.kwlist: |
| 116 | + if self.method_match(word, n, text): |
| 117 | + hash[word] = 1 |
| 118 | + for nspace in [__builtin__.__dict__, self.namespace]: |
| 119 | + for word, val in nspace.items(): |
| 120 | + if self.method_match(word, len(text), text) and word != "__builtins__": |
| 121 | + hash[self._callable_postfix(val, word)] = 1 |
| 122 | + matches = hash.keys() |
| 123 | + matches.sort() |
| 124 | + return matches |
| 125 | + |
| 126 | + def method_match(self, word, size, text): |
| 127 | + if self.autocomplete_mode == SIMPLE: |
| 128 | + return word[:size] == text |
| 129 | + elif self.autocomplete_mode == SUBSTRING: |
| 130 | + s = r'.*%s.*' % text |
| 131 | + return re.search(s, word) |
| 132 | + else: |
| 133 | + s = r'.*%s.*' % '.*'.join(list(text)) |
| 134 | + return re.search(s, word) |
| 135 | + |
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