view src/process-slots.h @ 5566:4654c01af32b

Improve the implementation, documentation of #'labels, #'flet. lisp/ChangeLog addition: 2011-09-07 Aidan Kehoe <kehoea@parhasard.net> * bytecomp.el: * bytecomp.el (for-effect): Move this earlier in the file, it's referenced in byte-compile-initial-macro-environment. * bytecomp.el (byte-compile-initial-macro-environment): In the byte-compile-macro-environment definition for #'labels, put off the compiling the lambda bodies until the point where the rest of the form is being compiled, allowing the lambda bodies to access appropriate values for byte-compile-bound-variables, and reducing excessive warning about free variables. Add a byte-compile-macro-environment definition for #'flet. This modifies byte-compile-function-environment appropriately, and warns about bindings of functions that have macro definitions in the current environment, about functions that have byte codes, and about functions that have byte-compile methods (which may not do what the user wants at runtime). * bytecomp.el (byte-compile-funcall): If FUNCTION is constant, call #'byte-compile-callargs-warn if that's appropriate, giving warnings about problems with calling functions bound with #'labels. * cl-macs.el: * cl-macs.el (flet): Mention the main difference from Common Lisp, that the bindings are dynamic, not lexical. Counsel the use of #'labels, not #'flet, for this and other reasons. Explain the limited single use case for #'flet. Cross-reference to bytecomp.el in a comment. * cl-macs.el (labels): Go into detail on which functions may be called from where. Explain how to access the function definition of a label within FORM. Add a comment cross-referencing to bytecomp.el. man/ChangeLog addition: 2011-09-07 Aidan Kehoe <kehoea@parhasard.net> * cl.texi (Function Bindings): Move #'labels first, describe it in more detail, explaining that it is to be preferred over #'flet, and explaining why. Explain that dynamic bindings with #'flet will also not work when functions are accessed through their bytecodes.
author Aidan Kehoe <kehoea@parhasard.net>
date Wed, 07 Sep 2011 16:26:45 +0100
parents 308d34e9f07d
children
line wrap: on
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/* Definitions of marked slots in processes
   Copyright (C) 1985, 1992, 1993, 1994 Free Software Foundation, Inc.
   Copyright (C) 2002 Ben Wing.

This file is part of XEmacs.

XEmacs is free software: you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
Free Software Foundation, either version 3 of the License, or (at your
option) any later version.

XEmacs is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
for more details.

You should have received a copy of the GNU General Public License
along with XEmacs.  If not, see <http://www.gnu.org/licenses/>. */

/* Synched up with: ????.  Split out of procimpl.h. */

/* We define the Lisp_Objects in the process structure in a separate file
   because there are numerous places we want to iterate over them, such
   as when defining them in the structure, initializing them, or marking
   them.

   To use, define MARKED_SLOT before including this file.  No need to
   undefine; that happens automatically.  */

  /* Name of this process */
  MARKED_SLOT (name)
  /* List of command arguments that this process was run with */
  MARKED_SLOT (command)
  /* (funcall FILTER PROC STRING)  (if FILTER is non-nil)
     to dispose of a bunch of chars from the process all at once */
  MARKED_SLOT (filter)
  /* (funcall FILTER PROC STRING)  (if FILTER is non-nil)
     to dispose of a bunch of chars from the stderr of process all at once */
  MARKED_SLOT (stderr_filter)
  /* (funcall SENTINEL PROCESS) when process state changes */
  MARKED_SLOT (sentinel)
  /* Buffer that output or stderr output is going to */
  MARKED_SLOT (buffer)
  MARKED_SLOT (stderr_buffer)
  /* Marker set to end of last buffer-inserted output from this process */
  MARKED_SLOT (mark)
  MARKED_SLOT (stderr_mark)
  /* Lisp_Int of subprocess' PID, or a cons of
     service/host if this is really a network connection */
  MARKED_SLOT (pid)

  /* Symbol indicating status of process.
     This may be a symbol: run, stop, exit, signal */
  MARKED_SLOT (status_symbol)
  /* Low level streams used in input and output, connected to child */
  MARKED_SLOT (pipe_instream)
  MARKED_SLOT (pipe_outstream)
  MARKED_SLOT (pipe_errstream)
  /* Data end streams, decoding and encoding pipe_* streams */
  MARKED_SLOT (coding_instream)
  MARKED_SLOT (coding_outstream)
  MARKED_SLOT (coding_errstream)

  /* Name of subprocess terminal.  Only needed for Unix but we put it
     here to avoid complications with KKCC, which needs to know about
     all of the Lisp objects, including in process-type-specific data. */
  MARKED_SLOT (tty_name)

  MARKED_SLOT (plist)

#undef MARKED_SLOT