Mercurial > cpython-lru_cache-weakref
annotate Lib/idlelib/AutoComplete.py @ 79691:05c8928362ee
Merge __next__ method link fixes with 3.3.
| author | Ezio Melotti <ezio.melotti@gmail.com> |
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| date | Fri, 12 Oct 2012 13:46:37 +0300 |
| parents | 82fc6ff7aa3e |
| children | c882395e8ed8 |
| rev | line source |
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1 """AutoComplete.py - An IDLE extension for automatically completing names. |
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2 |
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3 This extension can complete either attribute names of file names. It can pop |
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4 a window with all available names, for the user to select from. |
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5 """ |
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6 import os |
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7 import sys |
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8 import string |
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9 |
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10 from idlelib.configHandler import idleConf |
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11 |
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12 # This string includes all chars that may be in an identifier |
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13 ID_CHARS = string.ascii_letters + string.digits + "_" |
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14 |
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15 # These constants represent the two different types of completions |
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16 COMPLETE_ATTRIBUTES, COMPLETE_FILES = range(1, 2+1) |
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17 |
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18 from idlelib import AutoCompleteWindow |
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19 from idlelib.HyperParser import HyperParser |
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| 21 import __main__ | |
| 22 | |
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23 SEPS = os.sep |
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24 if os.altsep: # e.g. '/' on Windows... |
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25 SEPS += os.altsep |
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26 |
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27 class AutoComplete: |
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28 |
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29 menudefs = [ |
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30 ('edit', [ |
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31 ("Show Completions", "<<force-open-completions>>"), |
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32 ]) |
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33 ] |
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34 |
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35 popupwait = idleConf.GetOption("extensions", "AutoComplete", |
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36 "popupwait", type="int", default=0) |
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37 |
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38 def __init__(self, editwin=None): |
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39 self.editwin = editwin |
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40 if editwin is None: # subprocess and test |
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41 return |
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42 self.text = editwin.text |
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43 self.autocompletewindow = None |
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44 |
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45 # id of delayed call, and the index of the text insert when the delayed |
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46 # call was issued. If _delayed_completion_id is None, there is no |
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47 # delayed call. |
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48 self._delayed_completion_id = None |
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49 self._delayed_completion_index = None |
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50 |
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51 def _make_autocomplete_window(self): |
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52 return AutoCompleteWindow.AutoCompleteWindow(self.text) |
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53 |
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54 def _remove_autocomplete_window(self, event=None): |
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55 if self.autocompletewindow: |
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56 self.autocompletewindow.hide_window() |
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57 self.autocompletewindow = None |
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58 |
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59 def force_open_completions_event(self, event): |
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60 """Happens when the user really wants to open a completion list, even |
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61 if a function call is needed. |
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62 """ |
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63 self.open_completions(True, False, True) |
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64 |
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65 def try_open_completions_event(self, event): |
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66 """Happens when it would be nice to open a completion list, but not |
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67 really necessary, for example after an dot, so function |
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68 calls won't be made. |
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69 """ |
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70 lastchar = self.text.get("insert-1c") |
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71 if lastchar == ".": |
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72 self._open_completions_later(False, False, False, |
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73 COMPLETE_ATTRIBUTES) |
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74 elif lastchar in SEPS: |
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75 self._open_completions_later(False, False, False, |
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76 COMPLETE_FILES) |
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77 |
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78 def autocomplete_event(self, event): |
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79 """Happens when the user wants to complete his word, and if necessary, |
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80 open a completion list after that (if there is more than one |
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81 completion) |
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82 """ |
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83 if hasattr(event, "mc_state") and event.mc_state: |
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84 # A modifier was pressed along with the tab, continue as usual. |
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85 return |
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86 if self.autocompletewindow and self.autocompletewindow.is_active(): |
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87 self.autocompletewindow.complete() |
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88 return "break" |
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89 else: |
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90 opened = self.open_completions(False, True, True) |
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91 if opened: |
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92 return "break" |
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93 |
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94 def _open_completions_later(self, *args): |
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95 self._delayed_completion_index = self.text.index("insert") |
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96 if self._delayed_completion_id is not None: |
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97 self.text.after_cancel(self._delayed_completion_id) |
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98 self._delayed_completion_id = \ |
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99 self.text.after(self.popupwait, self._delayed_open_completions, |
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100 *args) |
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101 |
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102 def _delayed_open_completions(self, *args): |
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103 self._delayed_completion_id = None |
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104 if self.text.index("insert") != self._delayed_completion_index: |
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105 return |
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106 self.open_completions(*args) |
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107 |
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108 def open_completions(self, evalfuncs, complete, userWantsWin, mode=None): |
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109 """Find the completions and create the AutoCompleteWindow. |
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110 Return True if successful (no syntax error or so found). |
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111 if complete is True, then if there's nothing to complete and no |
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112 start of completion, won't open completions and return False. |
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113 If mode is given, will open a completion list only in this mode. |
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114 """ |
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115 # Cancel another delayed call, if it exists. |
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116 if self._delayed_completion_id is not None: |
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117 self.text.after_cancel(self._delayed_completion_id) |
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118 self._delayed_completion_id = None |
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119 |
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120 hp = HyperParser(self.editwin, "insert") |
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121 curline = self.text.get("insert linestart", "insert") |
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122 i = j = len(curline) |
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123 if hp.is_in_string() and (not mode or mode==COMPLETE_FILES): |
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124 # Find the beginning of the string |
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125 # fetch_completions will look at the file system to determine whether the |
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126 # string value constitutes an actual file name |
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127 # XXX could consider raw strings here and unescape the string value if it's |
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128 # not raw. |
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129 self._remove_autocomplete_window() |
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130 mode = COMPLETE_FILES |
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131 # Find last separator or string start |
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132 while i and curline[i-1] not in "'\"" + SEPS: |
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133 i -= 1 |
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134 comp_start = curline[i:j] |
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135 j = i |
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136 # Find string start |
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137 while i and curline[i-1] not in "'\"": |
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138 i -= 1 |
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139 comp_what = curline[i:j] |
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140 elif hp.is_in_code() and (not mode or mode==COMPLETE_ATTRIBUTES): |
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141 self._remove_autocomplete_window() |
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142 mode = COMPLETE_ATTRIBUTES |
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143 while i and (curline[i-1] in ID_CHARS or ord(curline[i-1]) > 127): |
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144 i -= 1 |
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145 comp_start = curline[i:j] |
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146 if i and curline[i-1] == '.': |
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147 hp.set_index("insert-%dc" % (len(curline)-(i-1))) |
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148 comp_what = hp.get_expression() |
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149 if not comp_what or \ |
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150 (not evalfuncs and comp_what.find('(') != -1): |
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151 return |
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152 else: |
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153 comp_what = "" |
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154 else: |
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155 return |
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156 |
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157 if complete and not comp_what and not comp_start: |
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158 return |
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159 comp_lists = self.fetch_completions(comp_what, mode) |
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160 if not comp_lists[0]: |
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161 return |
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162 self.autocompletewindow = self._make_autocomplete_window() |
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163 self.autocompletewindow.show_window(comp_lists, |
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164 "insert-%dc" % len(comp_start), |
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165 complete, |
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166 mode, |
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167 userWantsWin) |
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168 return True |
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169 |
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170 def fetch_completions(self, what, mode): |
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171 """Return a pair of lists of completions for something. The first list |
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172 is a sublist of the second. Both are sorted. |
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173 |
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174 If there is a Python subprocess, get the comp. list there. Otherwise, |
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175 either fetch_completions() is running in the subprocess itself or it |
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176 was called in an IDLE EditorWindow before any script had been run. |
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177 |
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178 The subprocess environment is that of the most recently run script. If |
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179 two unrelated modules are being edited some calltips in the current |
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180 module may be inoperative if the module was not the last to run. |
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181 """ |
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182 try: |
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183 rpcclt = self.editwin.flist.pyshell.interp.rpcclt |
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184 except: |
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185 rpcclt = None |
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186 if rpcclt: |
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187 return rpcclt.remotecall("exec", "get_the_completion_list", |
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188 (what, mode), {}) |
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189 else: |
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190 if mode == COMPLETE_ATTRIBUTES: |
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191 if what == "": |
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192 namespace = __main__.__dict__.copy() |
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193 namespace.update(__main__.__builtins__.__dict__) |
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194 bigl = eval("dir()", namespace) |
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195 bigl.sort() |
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196 if "__all__" in bigl: |
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197 smalll = sorted(eval("__all__", namespace)) |
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198 else: |
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200 else: |
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201 try: |
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202 entity = self.get_entity(what) |
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203 bigl = dir(entity) |
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204 bigl.sort() |
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205 if "__all__" in bigl: |
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206 smalll = sorted(entity.__all__) |
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207 else: |
| 42515 | 208 smalll = [s for s in bigl if s[:1] != '_'] |
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209 except: |
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210 return [], [] |
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211 |
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212 elif mode == COMPLETE_FILES: |
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213 if what == "": |
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214 what = "." |
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215 try: |
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216 expandedpath = os.path.expanduser(what) |
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217 bigl = os.listdir(expandedpath) |
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218 bigl.sort() |
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220 except OSError: |
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221 return [], [] |
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222 |
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223 if not smalll: |
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224 smalll = bigl |
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225 return smalll, bigl |
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226 |
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227 def get_entity(self, name): |
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228 """Lookup name in a namespace spanning sys.modules and __main.dict__""" |
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229 namespace = sys.modules.copy() |
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230 namespace.update(__main__.__dict__) |
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231 return eval(name, namespace) |