From ae6dc782da7d1f33b099d2965e02cd9376dd2ef9 Mon Sep 17 00:00:00 2001
From: David Halter <davidhalter88@gmail.com>
Date: Wed, 31 Jul 2013 17:16:12 +0200
Subject: [PATCH] simplify repl completion support, only use the jedi one,
 because the builtin completion (rlcompleter) is not context sensitive and
 makes the whole thing really complicated.

---
 jedi/utils.py | 110 ++++++++++++--------------------------------------
 1 file changed, 26 insertions(+), 84 deletions(-)

diff --git a/jedi/utils.py b/jedi/utils.py
index 37aa2225..31f83e49 100644
--- a/jedi/utils.py
+++ b/jedi/utils.py
@@ -2,92 +2,12 @@
 Utilities for end-users.
 """
 
-from rlcompleter import Completer
+from __future__ import absolute_import
+import __main__
 
 from jedi import Interpreter
 
 
-_NON_DELIMS = ' \t\n()'
-"""
-:class:`rcompleter.Completer` assumes these characters to be delimiter
-(i.e., :meth:`rcompleter.Completer.complete` does not expect these
-characters) but :class:`JediRLCompleter` can handle them.
-"""
-
-try:
-    import readline
-except ImportError:
-    pass
-else:
-    _READLINE_DEFAULT_DELIMS = readline.get_completer_delims()
-    _READLINE_JEDI_DELIMS = ''.join(
-        set(_READLINE_DEFAULT_DELIMS) - set(_NON_DELIMS))
-
-
-class JediRLCompleter(Completer):
-
-    """
-    :class:`rlcompleter.Completer` enhanced by Jedi.
-
-    This class tries matchers defined in :class:`.Completer` first.
-    If they fail, :class:`jedi.Interpreter` is used.
-
-    >>> import os
-    >>> completer = JediRLCompleter(locals())
-    >>> completer.complete('os.path.joi', 0)   # completion w/o Jedi
-    'os.path.join('
-    >>> completer.complete('os.path.join().s', 0)   # completion with Jedi
-    'os.path.join().split'
-
-    """
-
-    def _jedi_matches(self, text):
-        completions = Interpreter(text, [self.namespace]).completions()
-        return [text + c.complete for c in completions]
-
-    @staticmethod
-    def _split_for_default_matcher(text, delims=_NON_DELIMS):
-        """
-        Split `text` before passing it to :meth:`Completer.attr_matches` etc.
-
-        >>> JediRLCompleter._split_for_default_matcher('f(')
-        ('f(', '')
-        >>> JediRLCompleter._split_for_default_matcher('f().g')
-        ('f()', '.g')
-
-        """
-        import re
-        m = re.match(r"(.*[{0}])([^{0}]*)".format(re.escape(delims)), text)
-        if not m:
-            return ('', text)
-        return m.groups()
-
-    def _find_matches(self, default_matcher, text):
-        """
-        Common part for :meth:`attr_matches` and :meth:`global_matches`.
-
-        Try `default_matcher` first and return what it returns if
-        it is not empty.  Otherwise, try :meth:`_jedi_matches`.
-
-        :arg default_matcher: :meth:`.Completer.attr_matches` or
-                              :meth:`.Completer.global_matches`.
-        :arg str text: code to complete
-        """
-        (pre, body) = self._split_for_default_matcher(text)
-        matches = default_matcher(self, body)
-        if matches:
-            return [pre + m for m in matches]
-        return self._jedi_matches(text)
-
-    def attr_matches(self, text):
-        # NOTE: Completer is old type class so `super` cannot be used here
-        return self._find_matches(Completer.attr_matches, text)
-
-    def global_matches(self, text):
-        # NOTE: Completer is old type class so `super` cannot be used here
-        return self._find_matches(Completer.global_matches, text)
-
-
 def setup_readline():
     """
     Install Jedi completer to :mod:`readline`.
@@ -105,6 +25,28 @@ def setup_readline():
     except ImportError:
         print("Module readline not available.")
     else:
-        readline.set_completer(JediRLCompleter().complete)
+        class JediRL():
+            def complete(self, text, state):
+                """
+                This complete stuff is pretty weird, a generator would make
+                a lot more sense, but probably due to backwards compatibility
+                this is still the way how it works.
+
+                The only important part is the ``Interpreter`` call, everything
+                else hsa been copied from the ``rlcompleter`` std. library
+                module.
+                """
+                if state == 0:
+                    namespace = __main__.__dict__
+                    completions = Interpreter(text, [namespace]).completions()
+                    self.matches = [text + c.complete for c in completions]
+                try:
+                    return self.matches[state]
+                except IndexError:
+                    return None
+
+        readline.set_completer(JediRL().get_item)
+
         readline.parse_and_bind("tab: complete")
-        readline.set_completer_delims(_READLINE_JEDI_DELIMS)
+        # No delimiters, Jedi handles that.
+        readline.set_completer_delims('')