upstream/ipython Files · IPython/utils/strdispatch.py

refactor to improve cell switching in edit mode...

refactor to improve cell switching in edit mode This code was repeated in both CodeCell and TextCell, both of which are extensions of Cell, so this just unifies the logic in Cell. TextCell had logic here to check if the cell was rendered or not, but I don't believe it is possible to end up triggering such a code path. (Should that be required, I can always just add back these methods to TextCell, performing the .rendered==True check, and calling the Cell prior to this, code mirror at_top would only return true on if the cursor was at the first character of the top line. Now, pressing up arrow on any character on the top line will take you to the cell above. The same applies for the bottom line. Pressing down arrow would only go to the next cell if the cursor was at a location *after* the last character (something that is only possible to achieve in vim mode if the last line is empty, for example). Now, down arrow on any character of the last line will go to the next cell.

Thomas Kluyver - - Load All Authors

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      """String dispatch class to match regexps and dispatch commands.

      """

      # Stdlib imports

      import re

      # Our own modules

      from IPython.core.hooks import CommandChainDispatcher

      # Code begins

      class StrDispatch(object):

          """Dispatch (lookup) a set of strings / regexps for match.

          Example:

          >>> dis = StrDispatch()

          >>> dis.add_s('hei',34, priority = 4)

          >>> dis.add_s('hei',123, priority = 2)

          >>> dis.add_re('h.i', 686)

          >>> print(list(dis.flat_matches('hei')))

          [123, 34, 686]

          """

          def __init__(self):

              self.strs = {}

              self.regexs = {}

          def add_s(self, s, obj, priority= 0 ):

              """ Adds a target 'string' for dispatching """

              chain = self.strs.get(s, CommandChainDispatcher())

              chain.add(obj,priority)

              self.strs[s] = chain

          def add_re(self, regex, obj, priority= 0 ):

              """ Adds a target regexp for dispatching """

              chain = self.regexs.get(regex, CommandChainDispatcher())

              chain.add(obj,priority)

              self.regexs[regex] = chain

          def dispatch(self, key):

              """ Get a seq of Commandchain objects that match key """

              if key in self.strs:

                  yield self.strs[key]

              for r, obj in self.regexs.items():

                  if re.match(r, key):

                      yield obj

                  else:

                      #print "nomatch",key  # dbg

                      pass

          def __repr__(self):

              return "<Strdispatch %s, %s>" % (self.strs, self.regexs)

          def s_matches(self, key):

              if key not in self.strs:

                   return

              for el in self.strs[key]:

                  yield el[1]

          def flat_matches(self, key):

              """ Yield all 'value' targets, without priority """

              for val in self.dispatch(key):

                  for el in val:

                      yield el[1] # only value, no priority

              return

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				"""String dispatch class to match regexps and dispatch commands.
				"""

				# Stdlib imports
				import re

				# Our own modules
				from IPython.core.hooks import CommandChainDispatcher

				# Code begins
				class StrDispatch(object):
				"""Dispatch (lookup) a set of strings / regexps for match.

				Example:

				>>> dis = StrDispatch()
				>>> dis.add_s('hei',34, priority = 4)
				>>> dis.add_s('hei',123, priority = 2)
				>>> dis.add_re('h.i', 686)
				>>> print(list(dis.flat_matches('hei')))
				[123, 34, 686]
				"""

				def __init__(self):
				self.strs = {}
				self.regexs = {}

				def add_s(self, s, obj, priority= 0 ):
				""" Adds a target 'string' for dispatching """

				chain = self.strs.get(s, CommandChainDispatcher())
				chain.add(obj,priority)
				self.strs[s] = chain

				def add_re(self, regex, obj, priority= 0 ):
				""" Adds a target regexp for dispatching """

				chain = self.regexs.get(regex, CommandChainDispatcher())
				chain.add(obj,priority)
				self.regexs[regex] = chain

				def dispatch(self, key):
				""" Get a seq of Commandchain objects that match key """
				if key in self.strs:
				yield self.strs[key]

				for r, obj in self.regexs.items():
				if re.match(r, key):
				yield obj
				else:
				#print "nomatch",key # dbg
				pass

				def __repr__(self):
				return "<Strdispatch %s, %s>" % (self.strs, self.regexs)

				def s_matches(self, key):
				if key not in self.strs:
				return
				for el in self.strs[key]:
				yield el[1]

				def flat_matches(self, key):
				""" Yield all 'value' targets, without priority """
				for val in self.dispatch(key):
				for el in val:
				yield el[1] # only value, no priority
				return