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@@ -1,650 +1,657 b'' | |||
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1 | 1 | """Word completion for IPython. |
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2 | 2 | |
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3 | 3 | This module is a fork of the rlcompleter module in the Python standard |
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4 | 4 | library. The original enhancements made to rlcompleter have been sent |
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5 | 5 | upstream and were accepted as of Python 2.3, but we need a lot more |
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6 | 6 | functionality specific to IPython, so this module will continue to live as an |
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7 | 7 | IPython-specific utility. |
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8 | 8 | |
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9 | 9 | --------------------------------------------------------------------------- |
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10 | 10 | Original rlcompleter documentation: |
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11 | 11 | |
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12 | 12 | This requires the latest extension to the readline module (the |
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13 | 13 | completes keywords, built-ins and globals in __main__; when completing |
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14 | 14 | NAME.NAME..., it evaluates (!) the expression up to the last dot and |
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15 | 15 | completes its attributes. |
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16 | 16 | |
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17 | 17 | It's very cool to do "import string" type "string.", hit the |
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18 | 18 | completion key (twice), and see the list of names defined by the |
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19 | 19 | string module! |
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20 | 20 | |
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21 | 21 | Tip: to use the tab key as the completion key, call |
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22 | 22 | |
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23 | 23 | readline.parse_and_bind("tab: complete") |
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24 | 24 | |
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25 | 25 | Notes: |
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26 | 26 | |
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27 | 27 | - Exceptions raised by the completer function are *ignored* (and |
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28 | 28 | generally cause the completion to fail). This is a feature -- since |
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29 | 29 | readline sets the tty device in raw (or cbreak) mode, printing a |
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30 | 30 | traceback wouldn't work well without some complicated hoopla to save, |
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31 | 31 | reset and restore the tty state. |
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32 | 32 | |
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33 | 33 | - The evaluation of the NAME.NAME... form may cause arbitrary |
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34 | 34 | application defined code to be executed if an object with a |
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35 | 35 | __getattr__ hook is found. Since it is the responsibility of the |
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36 | 36 | application (or the user) to enable this feature, I consider this an |
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37 | 37 | acceptable risk. More complicated expressions (e.g. function calls or |
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38 | 38 | indexing operations) are *not* evaluated. |
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39 | 39 | |
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40 | 40 | - GNU readline is also used by the built-in functions input() and |
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41 | 41 | raw_input(), and thus these also benefit/suffer from the completer |
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42 | 42 | features. Clearly an interactive application can benefit by |
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43 | 43 | specifying its own completer function and using raw_input() for all |
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44 | 44 | its input. |
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45 | 45 | |
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46 | 46 | - When the original stdin is not a tty device, GNU readline is never |
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47 | 47 | used, and this module (and the readline module) are silently inactive. |
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48 | 48 | |
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49 | 49 | """ |
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50 | 50 | |
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51 | 51 | #***************************************************************************** |
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52 | 52 | # |
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53 | 53 | # Since this file is essentially a minimally modified copy of the rlcompleter |
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54 | 54 | # module which is part of the standard Python distribution, I assume that the |
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55 | 55 | # proper procedure is to maintain its copyright as belonging to the Python |
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56 | 56 | # Software Foundation (in addition to my own, for all new code). |
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57 | 57 | # |
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58 | 58 | # Copyright (C) 2001 Python Software Foundation, www.python.org |
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59 | 59 | # Copyright (C) 2001-2006 Fernando Perez. <fperez@colorado.edu> |
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60 | 60 | # |
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61 | 61 | # Distributed under the terms of the BSD License. The full license is in |
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62 | 62 | # the file COPYING, distributed as part of this software. |
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63 | 63 | # |
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64 | 64 | #***************************************************************************** |
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65 | 65 | |
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66 | 66 | import __builtin__ |
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67 | 67 | import __main__ |
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68 | 68 | import glob |
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69 | 69 | import keyword |
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70 | 70 | import os |
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71 | 71 | import re |
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72 | 72 | import shlex |
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73 | 73 | import sys |
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74 | 74 | import IPython.rlineimpl as readline |
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75 | 75 | import itertools |
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76 | 76 | from IPython.ipstruct import Struct |
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77 | 77 | from IPython import ipapi |
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78 | 78 | |
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79 | 79 | import types |
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80 | 80 | |
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81 | 81 | # Python 2.4 offers sets as a builtin |
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82 | 82 | try: |
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83 | 83 | set([1,2]) |
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84 | 84 | except NameError: |
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85 | 85 | from sets import Set as set |
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86 | 86 | |
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87 | 87 | from IPython.genutils import debugx |
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88 | 88 | |
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89 | 89 | __all__ = ['Completer','IPCompleter'] |
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90 | 90 | |
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91 | 91 | def get_class_members(cls): |
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92 | 92 | ret = dir(cls) |
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93 | 93 | if hasattr(cls,'__bases__'): |
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94 | 94 | for base in cls.__bases__: |
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95 | 95 | ret.extend(get_class_members(base)) |
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96 | 96 | return ret |
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97 | 97 | |
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98 | 98 | class Completer: |
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99 | 99 | def __init__(self,namespace=None,global_namespace=None): |
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100 | 100 | """Create a new completer for the command line. |
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101 | 101 | |
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102 | 102 | Completer([namespace,global_namespace]) -> completer instance. |
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103 | 103 | |
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104 | 104 | If unspecified, the default namespace where completions are performed |
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105 | 105 | is __main__ (technically, __main__.__dict__). Namespaces should be |
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106 | 106 | given as dictionaries. |
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107 | 107 | |
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108 | 108 | An optional second namespace can be given. This allows the completer |
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109 | 109 | to handle cases where both the local and global scopes need to be |
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110 | 110 | distinguished. |
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111 | 111 | |
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112 | 112 | Completer instances should be used as the completion mechanism of |
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113 | 113 | readline via the set_completer() call: |
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114 | 114 | |
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115 | 115 | readline.set_completer(Completer(my_namespace).complete) |
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116 | 116 | """ |
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117 | 117 | |
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118 | 118 | # some minimal strict typechecks. For some core data structures, I |
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119 | 119 | # want actual basic python types, not just anything that looks like |
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120 | 120 | # one. This is especially true for namespaces. |
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121 | 121 | for ns in (namespace,global_namespace): |
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122 | 122 | if ns is not None and type(ns) != types.DictType: |
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123 | 123 | raise TypeError,'namespace must be a dictionary' |
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124 | 124 | |
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125 | 125 | # Don't bind to namespace quite yet, but flag whether the user wants a |
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126 | 126 | # specific namespace or to use __main__.__dict__. This will allow us |
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127 | 127 | # to bind to __main__.__dict__ at completion time, not now. |
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128 | 128 | if namespace is None: |
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129 | 129 | self.use_main_ns = 1 |
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130 | 130 | else: |
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131 | 131 | self.use_main_ns = 0 |
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132 | 132 | self.namespace = namespace |
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133 | 133 | |
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134 | 134 | # The global namespace, if given, can be bound directly |
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135 | 135 | if global_namespace is None: |
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136 | 136 | self.global_namespace = {} |
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137 | 137 | else: |
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138 | 138 | self.global_namespace = global_namespace |
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139 | 139 | |
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140 | 140 | def complete(self, text, state): |
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141 | 141 | """Return the next possible completion for 'text'. |
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142 | 142 | |
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143 | 143 | This is called successively with state == 0, 1, 2, ... until it |
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144 | 144 | returns None. The completion should begin with 'text'. |
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145 | 145 | |
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146 | 146 | """ |
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147 | 147 | if self.use_main_ns: |
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148 | 148 | self.namespace = __main__.__dict__ |
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149 | 149 | |
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150 | 150 | if state == 0: |
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151 | 151 | if "." in text: |
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152 | 152 | self.matches = self.attr_matches(text) |
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153 | 153 | else: |
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154 | 154 | self.matches = self.global_matches(text) |
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155 | 155 | try: |
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156 | 156 | return self.matches[state] |
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157 | 157 | except IndexError: |
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158 | 158 | return None |
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159 | 159 | |
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160 | 160 | def global_matches(self, text): |
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161 | 161 | """Compute matches when text is a simple name. |
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162 | 162 | |
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163 | 163 | Return a list of all keywords, built-in functions and names currently |
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164 | 164 | defined in self.namespace or self.global_namespace that match. |
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165 | 165 | |
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166 | 166 | """ |
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167 | 167 | matches = [] |
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168 | 168 | match_append = matches.append |
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169 | 169 | n = len(text) |
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170 | 170 | for lst in [keyword.kwlist, |
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171 | 171 | __builtin__.__dict__.keys(), |
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172 | 172 | self.namespace.keys(), |
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173 | 173 | self.global_namespace.keys()]: |
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174 | 174 | for word in lst: |
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175 | 175 | if word[:n] == text and word != "__builtins__": |
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176 | 176 | match_append(word) |
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177 | 177 | return matches |
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178 | 178 | |
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179 | 179 | def attr_matches(self, text): |
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180 | 180 | """Compute matches when text contains a dot. |
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181 | 181 | |
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182 | 182 | Assuming the text is of the form NAME.NAME....[NAME], and is |
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183 | 183 | evaluatable in self.namespace or self.global_namespace, it will be |
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184 | 184 | evaluated and its attributes (as revealed by dir()) are used as |
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185 | 185 | possible completions. (For class instances, class members are are |
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186 | 186 | also considered.) |
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187 | 187 | |
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188 | 188 | WARNING: this can still invoke arbitrary C code, if an object |
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189 | 189 | with a __getattr__ hook is evaluated. |
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190 | 190 | |
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191 | 191 | """ |
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192 | 192 | import re |
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193 | 193 | |
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194 | 194 | # Another option, seems to work great. Catches things like ''.<tab> |
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195 | 195 | m = re.match(r"(\S+(\.\w+)*)\.(\w*)$", text) |
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196 | 196 | |
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197 | 197 | if not m: |
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198 | 198 | return [] |
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199 | 199 | |
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200 | 200 | expr, attr = m.group(1, 3) |
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201 | 201 | try: |
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202 | 202 | object = eval(expr, self.namespace) |
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203 | 203 | except: |
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204 | 204 | try: |
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205 | 205 | object = eval(expr, self.global_namespace) |
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206 | 206 | except: |
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207 | 207 | return [] |
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208 | 208 | |
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209 | 209 | |
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210 | 210 | # Start building the attribute list via dir(), and then complete it |
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211 | 211 | # with a few extra special-purpose calls. |
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212 | 212 | words = dir(object) |
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213 | 213 | |
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214 | 214 | if hasattr(object,'__class__'): |
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215 | 215 | words.append('__class__') |
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216 | 216 | words.extend(get_class_members(object.__class__)) |
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217 | 217 | |
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218 | 218 | # Some libraries (such as traits) may introduce duplicates, we want to |
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219 | 219 | # track and clean this up if it happens |
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220 | 220 | may_have_dupes = False |
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221 | 221 | |
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222 | 222 | # this is the 'dir' function for objects with Enthought's traits |
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223 | 223 | if hasattr(object, 'trait_names'): |
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224 | 224 | try: |
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225 | 225 | words.extend(object.trait_names()) |
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226 | 226 | may_have_dupes = True |
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227 | 227 | except TypeError: |
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228 | 228 | # This will happen if `object` is a class and not an instance. |
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229 | 229 | pass |
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230 | 230 | |
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231 | 231 | # Support for PyCrust-style _getAttributeNames magic method. |
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232 | 232 | if hasattr(object, '_getAttributeNames'): |
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233 | 233 | try: |
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234 | 234 | words.extend(object._getAttributeNames()) |
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235 | 235 | may_have_dupes = True |
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236 | 236 | except TypeError: |
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237 | 237 | # `object` is a class and not an instance. Ignore |
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238 | 238 | # this error. |
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239 | 239 | pass |
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240 | 240 | |
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241 | 241 | if may_have_dupes: |
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242 | 242 | # eliminate possible duplicates, as some traits may also |
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243 | 243 | # appear as normal attributes in the dir() call. |
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244 | 244 | words = set(words) |
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245 | 245 | |
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246 | 246 | # filter out non-string attributes which may be stuffed by dir() calls |
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247 | 247 | # and poor coding in third-party modules |
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248 | 248 | words = [w for w in words |
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249 | 249 | if isinstance(w, basestring) and w != "__builtins__"] |
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250 | 250 | # Build match list to return |
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251 | 251 | n = len(attr) |
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252 | 252 | return ["%s.%s" % (expr, w) for w in words if w[:n] == attr ] |
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253 | 253 | |
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254 | 254 | class IPCompleter(Completer): |
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255 | 255 | """Extension of the completer class with IPython-specific features""" |
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256 | 256 | |
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257 | 257 | def __init__(self,shell,namespace=None,global_namespace=None, |
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258 | 258 | omit__names=0,alias_table=None): |
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259 | 259 | """IPCompleter() -> completer |
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260 | 260 | |
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261 | 261 | Return a completer object suitable for use by the readline library |
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262 | 262 | via readline.set_completer(). |
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263 | 263 | |
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264 | 264 | Inputs: |
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265 | 265 | |
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266 | 266 | - shell: a pointer to the ipython shell itself. This is needed |
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267 | 267 | because this completer knows about magic functions, and those can |
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268 | 268 | only be accessed via the ipython instance. |
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269 | 269 | |
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270 | 270 | - namespace: an optional dict where completions are performed. |
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271 | 271 | |
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272 | 272 | - global_namespace: secondary optional dict for completions, to |
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273 | 273 | handle cases (such as IPython embedded inside functions) where |
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274 | 274 | both Python scopes are visible. |
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275 | 275 | |
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276 | 276 | - The optional omit__names parameter sets the completer to omit the |
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277 | 277 | 'magic' names (__magicname__) for python objects unless the text |
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278 | 278 | to be completed explicitly starts with one or more underscores. |
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279 | 279 | |
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280 | 280 | - If alias_table is supplied, it should be a dictionary of aliases |
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281 | 281 | to complete. """ |
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282 | 282 | |
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283 | 283 | Completer.__init__(self,namespace,global_namespace) |
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284 | 284 | self.magic_prefix = shell.name+'.magic_' |
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285 | 285 | self.magic_escape = shell.ESC_MAGIC |
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286 | 286 | self.readline = readline |
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287 | 287 | delims = self.readline.get_completer_delims() |
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288 | 288 | delims = delims.replace(self.magic_escape,'') |
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289 | 289 | self.readline.set_completer_delims(delims) |
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290 | 290 | self.get_line_buffer = self.readline.get_line_buffer |
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291 | 291 | self.omit__names = omit__names |
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292 | 292 | self.merge_completions = shell.rc.readline_merge_completions |
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293 | 293 | |
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294 | 294 | if alias_table is None: |
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295 | 295 | alias_table = {} |
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296 | 296 | self.alias_table = alias_table |
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297 | 297 | # Regexp to split filenames with spaces in them |
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298 | 298 | self.space_name_re = re.compile(r'([^\\] )') |
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299 | 299 | # Hold a local ref. to glob.glob for speed |
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300 | 300 | self.glob = glob.glob |
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301 | 301 | |
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302 | 302 | # Determine if we are running on 'dumb' terminals, like (X)Emacs |
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303 | 303 | # buffers, to avoid completion problems. |
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304 | 304 | term = os.environ.get('TERM','xterm') |
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305 | 305 | self.dumb_terminal = term in ['dumb','emacs'] |
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306 | 306 | |
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307 | 307 | # Special handling of backslashes needed in win32 platforms |
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308 | 308 | if sys.platform == "win32": |
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309 | 309 | self.clean_glob = self._clean_glob_win32 |
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310 | 310 | else: |
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311 | 311 | self.clean_glob = self._clean_glob |
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312 | 312 | self.matchers = [self.python_matches, |
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313 | 313 | self.file_matches, |
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314 | 314 | self.alias_matches, |
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315 | 315 | self.python_func_kw_matches] |
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316 | 316 | |
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317 | 317 | # Code contributed by Alex Schmolck, for ipython/emacs integration |
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318 | 318 | def all_completions(self, text): |
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319 | 319 | """Return all possible completions for the benefit of emacs.""" |
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320 | 320 | |
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321 | 321 | completions = [] |
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322 | 322 | comp_append = completions.append |
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323 | 323 | try: |
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324 | 324 | for i in xrange(sys.maxint): |
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325 | 325 | res = self.complete(text, i) |
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326 | 326 | |
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327 | 327 | if not res: break |
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328 | 328 | |
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329 | 329 | comp_append(res) |
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330 | 330 | #XXX workaround for ``notDefined.<tab>`` |
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331 | 331 | except NameError: |
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332 | 332 | pass |
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333 | 333 | return completions |
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334 | 334 | # /end Alex Schmolck code. |
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335 | 335 | |
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336 | 336 | def _clean_glob(self,text): |
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337 | 337 | return self.glob("%s*" % text) |
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338 | 338 | |
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339 | 339 | def _clean_glob_win32(self,text): |
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340 | 340 | return [f.replace("\\","/") |
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341 | 341 | for f in self.glob("%s*" % text)] |
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342 | 342 | |
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343 | 343 | def file_matches(self, text): |
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344 | 344 | """Match filenames, expanding ~USER type strings. |
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345 | 345 | |
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346 | 346 | Most of the seemingly convoluted logic in this completer is an |
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347 | 347 | attempt to handle filenames with spaces in them. And yet it's not |
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348 | 348 | quite perfect, because Python's readline doesn't expose all of the |
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349 | 349 | GNU readline details needed for this to be done correctly. |
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350 | 350 | |
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351 | 351 | For a filename with a space in it, the printed completions will be |
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352 | 352 | only the parts after what's already been typed (instead of the |
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353 | 353 | full completions, as is normally done). I don't think with the |
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354 | 354 | current (as of Python 2.3) Python readline it's possible to do |
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355 | 355 | better.""" |
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356 | 356 | |
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357 | 357 | #print 'Completer->file_matches: <%s>' % text # dbg |
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358 | 358 | |
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359 | 359 | # chars that require escaping with backslash - i.e. chars |
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360 | 360 | # that readline treats incorrectly as delimiters, but we |
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361 | 361 | # don't want to treat as delimiters in filename matching |
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362 | 362 | # when escaped with backslash |
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363 | 363 | |
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364 | 364 | protectables = ' ()[]{}' |
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365 | 365 | |
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366 | 366 | if text.startswith('!'): |
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367 | 367 | text = text[1:] |
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368 | 368 | text_prefix = '!' |
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369 | 369 | else: |
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370 | 370 | text_prefix = '' |
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371 | 371 | |
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372 | 372 | def protect_filename(s): |
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373 | 373 | return "".join([(ch in protectables and '\\' + ch or ch) |
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374 | 374 | for ch in s]) |
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375 | ||
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376 | def single_dir_expand(matches): | |
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377 | "Recursively expand match lists containing a single dir." | |
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378 | ||
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379 | if len(matches) == 1 and os.path.isdir(matches[0]): | |
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380 | # Takes care of links to directories also. Use '/' | |
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381 | # explicitly, even under Windows, so that name completions | |
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382 | # don't end up escaped. | |
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383 | d = matches[0] | |
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384 | if d[-1] in ['/','\\']: | |
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385 | d = d[:-1] | |
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386 | ||
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387 | matches = [ (d + '/' + p) for p in os.listdir(d) ] | |
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388 | return single_dir_expand(matches) | |
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389 | else: | |
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390 | return matches | |
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375 | 391 | |
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376 | 392 | lbuf = self.lbuf |
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377 | 393 | open_quotes = 0 # track strings with open quotes |
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378 | 394 | try: |
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379 | 395 | lsplit = shlex.split(lbuf)[-1] |
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380 | 396 | except ValueError: |
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381 | 397 | # typically an unmatched ", or backslash without escaped char. |
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382 | 398 | if lbuf.count('"')==1: |
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383 | 399 | open_quotes = 1 |
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384 | 400 | lsplit = lbuf.split('"')[-1] |
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385 | 401 | elif lbuf.count("'")==1: |
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386 | 402 | open_quotes = 1 |
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387 | 403 | lsplit = lbuf.split("'")[-1] |
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388 | 404 | else: |
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389 | 405 | return [] |
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390 | 406 | except IndexError: |
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391 | 407 | # tab pressed on empty line |
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392 | 408 | lsplit = "" |
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393 | 409 | |
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394 | 410 | if lsplit != protect_filename(lsplit): |
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395 | 411 | # if protectables are found, do matching on the whole escaped |
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396 | 412 | # name |
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397 | 413 | has_protectables = 1 |
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398 | 414 | text0,text = text,lsplit |
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399 | 415 | else: |
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400 | 416 | has_protectables = 0 |
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401 | 417 | text = os.path.expanduser(text) |
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402 | 418 | |
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403 | 419 | if text == "": |
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404 | 420 | return [text_prefix + protect_filename(f) for f in self.glob("*")] |
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405 | 421 | |
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406 | 422 | m0 = self.clean_glob(text.replace('\\','')) |
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407 | 423 | if has_protectables: |
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408 | 424 | # If we had protectables, we need to revert our changes to the |
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409 | 425 | # beginning of filename so that we don't double-write the part |
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410 | 426 | # of the filename we have so far |
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411 | 427 | len_lsplit = len(lsplit) |
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412 | 428 | matches = [text_prefix + text0 + |
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413 | 429 | protect_filename(f[len_lsplit:]) for f in m0] |
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414 | 430 | else: |
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415 | 431 | if open_quotes: |
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416 | 432 | # if we have a string with an open quote, we don't need to |
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417 | 433 | # protect the names at all (and we _shouldn't_, as it |
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418 | 434 | # would cause bugs when the filesystem call is made). |
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419 | 435 | matches = m0 |
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420 | 436 | else: |
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421 | 437 | matches = [text_prefix + |
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422 | 438 | protect_filename(f) for f in m0] |
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423 | if len(matches) == 1 and os.path.isdir(matches[0]): | |
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424 | # Takes care of links to directories also. Use '/' | |
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425 | # explicitly, even under Windows, so that name completions | |
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426 | # don't end up escaped. | |
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427 | d = matches[0] | |
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428 | if d[-1] in ['/','\\']: | |
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429 | d = d[:-1] | |
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430 | ||
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431 | matches = [ (d + '/' + p) for p in os.listdir(d) ] | |
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432 | ||
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433 | return matches | |
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439 | ||
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440 | return single_dir_expand(matches) | |
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434 | 441 | |
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435 | 442 | def alias_matches(self, text): |
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436 | 443 | """Match internal system aliases""" |
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437 | 444 | #print 'Completer->alias_matches:',text,'lb',self.lbuf # dbg |
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438 | 445 | |
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439 | 446 | # if we are not in the first 'item', alias matching |
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440 | 447 | # doesn't make sense |
|
441 | 448 | if ' ' in self.lbuf: |
|
442 | 449 | return [] |
|
443 | 450 | text = os.path.expanduser(text) |
|
444 | 451 | aliases = self.alias_table.keys() |
|
445 | 452 | if text == "": |
|
446 | 453 | return aliases |
|
447 | 454 | else: |
|
448 | 455 | return [alias for alias in aliases if alias.startswith(text)] |
|
449 | 456 | |
|
450 | 457 | def python_matches(self,text): |
|
451 | 458 | """Match attributes or global python names""" |
|
452 | 459 | |
|
453 | 460 | #print 'Completer->python_matches, txt=<%s>' % text # dbg |
|
454 | 461 | if "." in text: |
|
455 | 462 | try: |
|
456 | 463 | matches = self.attr_matches(text) |
|
457 | 464 | if text.endswith('.') and self.omit__names: |
|
458 | 465 | if self.omit__names == 1: |
|
459 | 466 | # true if txt is _not_ a __ name, false otherwise: |
|
460 | 467 | no__name = (lambda txt: |
|
461 | 468 | re.match(r'.*\.__.*?__',txt) is None) |
|
462 | 469 | else: |
|
463 | 470 | # true if txt is _not_ a _ name, false otherwise: |
|
464 | 471 | no__name = (lambda txt: |
|
465 | 472 | re.match(r'.*\._.*?',txt) is None) |
|
466 | 473 | matches = filter(no__name, matches) |
|
467 | 474 | except NameError: |
|
468 | 475 | # catches <undefined attributes>.<tab> |
|
469 | 476 | matches = [] |
|
470 | 477 | else: |
|
471 | 478 | matches = self.global_matches(text) |
|
472 | 479 | # this is so completion finds magics when automagic is on: |
|
473 | 480 | if (matches == [] and |
|
474 | 481 | not text.startswith(os.sep) and |
|
475 | 482 | not ' ' in self.lbuf): |
|
476 | 483 | matches = self.attr_matches(self.magic_prefix+text) |
|
477 | 484 | return matches |
|
478 | 485 | |
|
479 | 486 | def _default_arguments(self, obj): |
|
480 | 487 | """Return the list of default arguments of obj if it is callable, |
|
481 | 488 | or empty list otherwise.""" |
|
482 | 489 | |
|
483 | 490 | if not (inspect.isfunction(obj) or inspect.ismethod(obj)): |
|
484 | 491 | # for classes, check for __init__,__new__ |
|
485 | 492 | if inspect.isclass(obj): |
|
486 | 493 | obj = (getattr(obj,'__init__',None) or |
|
487 | 494 | getattr(obj,'__new__',None)) |
|
488 | 495 | # for all others, check if they are __call__able |
|
489 | 496 | elif hasattr(obj, '__call__'): |
|
490 | 497 | obj = obj.__call__ |
|
491 | 498 | # XXX: is there a way to handle the builtins ? |
|
492 | 499 | try: |
|
493 | 500 | args,_,_1,defaults = inspect.getargspec(obj) |
|
494 | 501 | if defaults: |
|
495 | 502 | return args[-len(defaults):] |
|
496 | 503 | except TypeError: pass |
|
497 | 504 | return [] |
|
498 | 505 | |
|
499 | 506 | def python_func_kw_matches(self,text): |
|
500 | 507 | """Match named parameters (kwargs) of the last open function""" |
|
501 | 508 | |
|
502 | 509 | if "." in text: # a parameter cannot be dotted |
|
503 | 510 | return [] |
|
504 | 511 | try: regexp = self.__funcParamsRegex |
|
505 | 512 | except AttributeError: |
|
506 | 513 | regexp = self.__funcParamsRegex = re.compile(r''' |
|
507 | 514 | '.*?' | # single quoted strings or |
|
508 | 515 | ".*?" | # double quoted strings or |
|
509 | 516 | \w+ | # identifier |
|
510 | 517 | \S # other characters |
|
511 | 518 | ''', re.VERBOSE | re.DOTALL) |
|
512 | 519 | # 1. find the nearest identifier that comes before an unclosed |
|
513 | 520 | # parenthesis e.g. for "foo (1+bar(x), pa", the candidate is "foo" |
|
514 | 521 | tokens = regexp.findall(self.get_line_buffer()) |
|
515 | 522 | tokens.reverse() |
|
516 | 523 | iterTokens = iter(tokens); openPar = 0 |
|
517 | 524 | for token in iterTokens: |
|
518 | 525 | if token == ')': |
|
519 | 526 | openPar -= 1 |
|
520 | 527 | elif token == '(': |
|
521 | 528 | openPar += 1 |
|
522 | 529 | if openPar > 0: |
|
523 | 530 | # found the last unclosed parenthesis |
|
524 | 531 | break |
|
525 | 532 | else: |
|
526 | 533 | return [] |
|
527 | 534 | # 2. Concatenate dotted names ("foo.bar" for "foo.bar(x, pa" ) |
|
528 | 535 | ids = [] |
|
529 | 536 | isId = re.compile(r'\w+$').match |
|
530 | 537 | while True: |
|
531 | 538 | try: |
|
532 | 539 | ids.append(iterTokens.next()) |
|
533 | 540 | if not isId(ids[-1]): |
|
534 | 541 | ids.pop(); break |
|
535 | 542 | if not iterTokens.next() == '.': |
|
536 | 543 | break |
|
537 | 544 | except StopIteration: |
|
538 | 545 | break |
|
539 | 546 | # lookup the candidate callable matches either using global_matches |
|
540 | 547 | # or attr_matches for dotted names |
|
541 | 548 | if len(ids) == 1: |
|
542 | 549 | callableMatches = self.global_matches(ids[0]) |
|
543 | 550 | else: |
|
544 | 551 | callableMatches = self.attr_matches('.'.join(ids[::-1])) |
|
545 | 552 | argMatches = [] |
|
546 | 553 | for callableMatch in callableMatches: |
|
547 | 554 | try: namedArgs = self._default_arguments(eval(callableMatch, |
|
548 | 555 | self.namespace)) |
|
549 | 556 | except: continue |
|
550 | 557 | for namedArg in namedArgs: |
|
551 | 558 | if namedArg.startswith(text): |
|
552 | 559 | argMatches.append("%s=" %namedArg) |
|
553 | 560 | return argMatches |
|
554 | 561 | |
|
555 | 562 | def dispatch_custom_completer(self,text): |
|
556 | 563 | # print "Custom! '%s' %s" % (text, self.custom_completers) # dbg |
|
557 | 564 | line = self.full_lbuf |
|
558 | 565 | if not line.strip(): |
|
559 | 566 | return None |
|
560 | 567 | |
|
561 | 568 | event = Struct() |
|
562 | 569 | event.line = line |
|
563 | 570 | event.symbol = text |
|
564 | 571 | cmd = line.split(None,1)[0] |
|
565 | 572 | event.command = cmd |
|
566 | 573 | #print "\ncustom:{%s]\n" % event # dbg |
|
567 | 574 | |
|
568 | 575 | # for foo etc, try also to find completer for %foo |
|
569 | 576 | if not cmd.startswith(self.magic_escape): |
|
570 | 577 | try_magic = self.custom_completers.s_matches( |
|
571 | 578 | self.magic_escape + cmd) |
|
572 | 579 | else: |
|
573 | 580 | try_magic = [] |
|
574 | 581 | |
|
575 | 582 | |
|
576 | 583 | for c in itertools.chain( |
|
577 | 584 | self.custom_completers.s_matches(cmd), |
|
578 | 585 | try_magic, |
|
579 | 586 | self.custom_completers.flat_matches(self.lbuf)): |
|
580 | 587 | # print "try",c # dbg |
|
581 | 588 | try: |
|
582 | 589 | res = c(event) |
|
583 | 590 | return [r for r in res if r.lower().startswith(text.lower())] |
|
584 | 591 | except ipapi.TryNext: |
|
585 | 592 | pass |
|
586 | 593 | |
|
587 | 594 | return None |
|
588 | 595 | |
|
589 | 596 | |
|
590 | 597 | |
|
591 | 598 | def complete(self, text, state): |
|
592 | 599 | """Return the next possible completion for 'text'. |
|
593 | 600 | |
|
594 | 601 | This is called successively with state == 0, 1, 2, ... until it |
|
595 | 602 | returns None. The completion should begin with 'text'. """ |
|
596 | 603 | |
|
597 | 604 | #print '\n*** COMPLETE: <%s> (%s)' % (text,state) # dbg |
|
598 | 605 | |
|
599 | 606 | # if there is only a tab on a line with only whitespace, instead |
|
600 | 607 | # of the mostly useless 'do you want to see all million |
|
601 | 608 | # completions' message, just do the right thing and give the user |
|
602 | 609 | # his tab! Incidentally, this enables pasting of tabbed text from |
|
603 | 610 | # an editor (as long as autoindent is off). |
|
604 | 611 | |
|
605 | 612 | # don't apply this on 'dumb' terminals, such as emacs buffers, so we |
|
606 | 613 | # don't interfere with their own tab-completion mechanism. |
|
607 | 614 | self.full_lbuf = self.get_line_buffer() |
|
608 | 615 | self.lbuf = self.full_lbuf[:self.readline.get_endidx()] |
|
609 | 616 | if not (self.dumb_terminal or self.get_line_buffer().strip()): |
|
610 | 617 | self.readline.insert_text('\t') |
|
611 | 618 | return None |
|
612 | 619 | |
|
613 | 620 | |
|
614 | 621 | magic_escape = self.magic_escape |
|
615 | 622 | magic_prefix = self.magic_prefix |
|
616 | 623 | |
|
617 | 624 | try: |
|
618 | 625 | if text.startswith(magic_escape): |
|
619 | 626 | text = text.replace(magic_escape,magic_prefix) |
|
620 | 627 | elif text.startswith('~'): |
|
621 | 628 | text = os.path.expanduser(text) |
|
622 | 629 | if state == 0: |
|
623 | 630 | custom_res = self.dispatch_custom_completer(text) |
|
624 | 631 | if custom_res is not None: |
|
625 | 632 | # did custom completers produce something? |
|
626 | 633 | self.matches = custom_res |
|
627 | 634 | else: |
|
628 | 635 | # Extend the list of completions with the results of each |
|
629 | 636 | # matcher, so we return results to the user from all |
|
630 | 637 | # namespaces. |
|
631 | 638 | if self.merge_completions: |
|
632 | 639 | self.matches = [] |
|
633 | 640 | for matcher in self.matchers: |
|
634 | 641 | self.matches.extend(matcher(text)) |
|
635 | 642 | else: |
|
636 | 643 | for matcher in self.matchers: |
|
637 | 644 | self.matches = matcher(text) |
|
638 | 645 | if self.matches: |
|
639 | 646 | break |
|
640 | 647 | |
|
641 | 648 | try: |
|
642 | 649 | return self.matches[state].replace(magic_prefix,magic_escape) |
|
643 | 650 | except IndexError: |
|
644 | 651 | return None |
|
645 | 652 | except: |
|
646 | 653 | from IPython.ultraTB import AutoFormattedTB; # dbg |
|
647 | 654 | tb=AutoFormattedTB('Verbose');tb() #dbg |
|
648 | 655 | |
|
649 | 656 | # If completion fails, don't annoy the user. |
|
650 | 657 | return None |
|
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