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@comment{ STILL DEPENDS ON DIRECTORY.  FIX WHEN INSTALLED.

   "/slocal/src/acl2/v1-8/interface/emacs/"

}

@title(The ACL2 Prooftree and Mouse Interface)
@author(M. Kaufmann & M. K. Smith)

@section(Introduction)

NOTE:  This interface should be considered preliminary, although it has been
used successfully at Computational Logic, Inc.  It is not part of the ACL2
software in the strictest sense (which is co-authored by Matt Kaufmann and J
Moore), but we feel that it will be useful to ACL2 users.

This note describes how to get the ACL2/Emacs prooftree and mouse
support.  You just need to add a single autoload form to your .emacs
file.  And then issue the correspoding M-x command.

The prooftree support has been tested in the following Emacs:
@begin(format)
 Emacs 18
 Emacs 19        - with comint and WFS's shell, sshell.el.
 Lemacs 19
@end(format)

The menu and mouse support currently works with Emacs 19.  

@b[If you don't want to deal with any of this:]  You probably want to
put the following form in your acl2-customization.lisp file.
@begin(verbatim)

 :STOP-PROOF-TREE

@end(verbatim)
This will turn off the proof tree printing from ACL2.  For documentation in ACL2 do 
@begin(verbatim)
 :doc proof-tree
@end(verbatim)
To turn proof trees back on use `:START-PROOF-TREE'.@*
NOTE: If you do `:STOP-PROOF-TREE' in ACL2, then M-x start-proof-tree
will not accomplish anything useful in Emacs.


@section(LOADING EMACS INTERFACE CODE)

@subsection(Simplest .emacs Additions)

If you want the full interface, put the following in your  .emacs
file after replacing /slocal/src/acl2/v1-8/ with the full pathname
of your acl2-sources/ directory.
@begin(verbatim)

 (setq *acl2-interface-dir*
   "/slocal/src/acl2/v1-8/interface/emacs/")

 (autoload 'run-acl2 ;;@i[emacs 19.27 only at this time]
   (concat *acl2-interface-dir* "top-start-inferior-acl2")
   "Begin ACL2 in an inferior ACL2 mode buffer." 
   t)

@end(verbatim)
Then, to get things started in Emacs do `M-x run-acl2'.  Use `M-x
acl2-mode' to get `<acl2-file>.lisp' into the right mode.  The
commands in the various modes are listed in a later section.  But you
can see most of them by observing the new pull-down menus and pop-up
menu in inferior ACL2 mode and ACL2 mode.  The pop-up menu is tied to
mouse-3.

If you just want proof trees, use the following after replacing
/slocal/src/acl2/v1-8/ with the full pathname of your acl2-sources/
directory.

@begin(verbatim)

 (setq *acl2-interface-dir*
   "/slocal/src/acl2/v1-8/interface/emacs/")

(autoload 'start-proof-tree
  (concat *acl2-interface-dir* "top-start-shell-acl2")
  "Enable proof tree logging in a prooftree buffer." 
  t)

@end(verbatim)

@subsection(More Control from .emacs: Setting preferences)

The alist, *acl2-user-map-interface*, determines what menus you get.  
If a feature is included after a mode name, then you get it.
@begin(verbatim)

(defvar *acl2-user-map-interface*
  '((inferior-acl2-mode menu-bar popup-menu keys)
    (acl2-mode          menu-bar popup-menu keys)
    (prooftree-mode     menu-bar popup-menu keys)))

@end(verbatim)

If you set the following to T, you will switch to the inferior ACL2
buffer when you send forms, regions, or buffers to it.
@begin(verbatim)

 (setq *acl2-eval-and-go* nil)

@end(verbatim)
If you set the following to NIL you will be queried for their values
when you start up a prooftree buffer (via M-x start-proof-tree).
These are the defaults you get based on the autoload above.
@begin(verbatim)

 (setq *acl2-proof-tree-height* 17)
 (setq *checkpoint-recenter-line* 3)

@end(verbatim)


@section(Commands)

Commands are enabled based on the value of the alist,
*acl2-user-map-interface*, as described above.  There are some conventions that
you need to know regarding arguments to mouse commands.

If a menu bar entry is of the form
@begin(format)
   Print event ...
@end(format)
the "..." indicates that you will be prompted in the minibuffer for an argument.

If a menu bar entry is of the form
@begin(format)
   Mode >
@end(format)
the ">" indicates a suborninate menu that will pop up if you release
on this menu item. 

Pop-up menu items indicate whether they take an argument based on a
preceding ".".  The argument is determined by what you clicked on to
bring up the menu.  Arguments derived from things that appear in the
chronology are somewhat robust.  So that if you had a list of events
on the screen like:
@begin(verbatim)
         13  (DEFMACRO TEXT (X) ...)
 L       14  (DEFUN MSG-P (X) ...)
 L       15  (DEFUN MAKE-PACKET (X Y Z) ...)
 L       16  (DEFUN HISTORY-P (L) ...)
         17  (DEFMACRO INFROM (X) ...)
@end(verbatim)
to see event 14 you could click right anywhere on that line and select
either ". Print Event" or ". Print Command".


@subsection(Prooftree Related)

@begin(menu)
M-x start-proof-tree
M-x stop-proof-tree
@end(menu)


@subsection(Prooftree Mode)

@subsubsection<POPUP MENU>

@begin(menu)
Abort              @\Abort *inferior-acl2*.
Goto subgoal       @\Go to clicked on subgoal in *inferior-acl2*. 
Resume proof tree  @\Resume printing proof tree.
Suspend proof tree @\Suspend printing proof tree.
Checkpoint/Suspend @\Suspend prooftree and go to clicked on checkpoint.
Checkpoint         @\Go to clicked on checkpoint.
Help               @\
@end(menu)

@subsubsection<MENU BAR>

@begin(menu)
Prooftree@begin(menu)
 Checkpoint @\Go to next checkpoint
 Goto subgoal @\That cursor is on.
 Checkpoint / Suspend @\Go to next checkpoint and suspend proof tree.
 Resume proof tree 
 Suspend proof tree 
 Abort @\Abort prooftree. (ACL2 will continue to send prooftrees, it just
       @\won't go the the prooftree buffer.) 
 Help 
@end(menu)
@end(menu)

@subsubsection<KEYS>

@begin(menu)
C-z z @\Previous C-z key binding
C-z c @\Go to checkpoint
C-z s @\Suspend proof tree
C-z r @\Resume proof tree
C-z a @\Mfm abort secondary buffer
C-z g @\Goto subgoal
C-z h @\help
C-z ? @\help
@end(menu)


@subsection(ACL2 Mode	)

ACL2 Mode is like Lisp mode except that the functions that send sexprs
to the inferior Lisp process expect an inferior ACL2 process in the  *inferior-acl2* buffer.

@subsubsection<POPUP MENU>

@begin(menu)
Send to ACL2 @\Send top level form clicked on to ACL2.
Add hint @\Add the hint form to the clicked on defun.
@begin(menu)
Do not induct.
Do not generalize.
Do not fertilize.
Expand @\expand form. Requests you mouse it.
Hands off.
Disable@\Disable symbol. Requests you mouse it.
Enable@\Enable symbol. Requests you mouse it.
Induct@\Induct based on form. Requests you mouse it. 
Cases@\Perform case split on form.Requests you mouse it. 
@end(menu)
Go to inferior ACL2
Verify@\Take clicked on form into interactive prover.
@end(menu)


@subsubsection<KEYS>

@begin(menu)
C-x C-e @\eval last sexp
C-c C-r @\eval region
C-M-x   @\eval defun
C-c C-e @\eval defun
C-c C-z @\switch to ACL2
C-c C-l @\load file
C-c C-a @\show arglist
C-c C-d @\describe symbol
C-c C-f @\show function documentation
C-c C-v @\show variable documentation
C-ce    @\eval defun and go to ACL2
C-cr    @\eval region and go to ACL2
@end(menu)


@subsection(Inferior ACL2 Mode)

@subsubsection<MENU BAR>

@begin(menu)
Events@begin(menu)
 Recent events @\(pbt '(:here -10))
 Print back through ...@\(pbt <event>)
 Undo @\(ubt ':here)
 Oops @\(oops)
 Undo through ... @\(ubt '<event>)
 Undo through ... @\(ubt! '<cd>)
      
 Load file ... @\(cl2-load-file)
      
 Disable ...@\(in-theory (disable <symbol>))
 Enable ... @\(in-theory (enable <symbol>))
      
 Verify guards ... @\(verify-guards '<symbol>)
 Verify termination ... @\(verify-guards '<symbol>)
      
 Certify-book ... @\(certify-book <filename>)
 Include-book ... @\(include-book <filename> )
     
Compound commands @begin(menu)
 Expand compound command ... @\(puff '<cd>)
 Expand compound command! ... @\(puff* '<cd>)
@end(menu)

Table@begin(menu)
 Print value ... @\(table symbol)
 Clear ... @\(table <symbol> nil nil :clear
 Print guard ... @\(table <symbol> nil nil :guard)
@end(menu)
@end(menu)

Print@begin(menu)

 Event ... @\(pe 'event)
 Event! ... @\(pe! 'event)
 Back through ... @\(pbt 'event)

 Command ... @\(pc '<cd>)
 Command block ... @\(pcb '<cd>)
 Full Command block ... @\(pcb! '<cd>)

 Signature ... @\(args 'event)
 Formula ... @\(pf 'event)
 Properties ... @\(props 'event)

 Print connected book directory @\(cbd)

 Rules whose top function symbol is ... @\(pl 'event)
 Rules stored by event ... @\(pr 'event)
 Rules stored by command ... @\(pr! '<cd>)

 Monitored-runes @\(monitored-runes)
@end(menu)

Control@begin(menu)

 Load ... @\(ld filename)
 Accumulated Persistence@begin(menu)
  Activate @\(accumulated-persistence t)
  Deactivate @\(accumulated-persistence nil)
  Display statistics ordered by@begin(menu)
   frames @\(show-accumulated-persistence :frames)  
   times tried @\(show-accumulated-persistence :tries)
   ratio @\(show-accumulated-persistence :ratio)
  @end(menu)
Break rewrite@begin(menu)
 Start general rule monitoring @\(brr t)
 Stop general rule monitoring @\(brr nil)
 Print monitored runes @\(monitored-runes)
 Monitor rune: ... @\(monitor '(:definition <event>) 't)
 Unmonitor rune: ... @\(unmonitor '(:definition <event>))@end(menu)
 	
Commands@begin(menu)
 Abort to ACL2 top-level @\#.
 Term being rewritten @\:target
 Substitution making :lhs equal :target @\:unify-subst
 Hypotheses @\:hyps
 Ith hypothesis ... @\:hyp <integer> 
 Left-hand side of conclusion @\:lhs
 Right-hand side of conclusion @\:rhs
 Type assumptions governing :target @\:type-alist
 Ttree before :eval @\:initial-ttree
 Negations of backchaining hyps pursued @\:ancestors
	
 Rewrite's path from top clause to :target @\:path
 Top-most frame in :path @\:top
 Ith frame in :path ... @\:frame <integer>@end(menu)
	
AFTER :EVAL@begin(menu)
 Did application succeed? @\:wonp
 Rewritten :rhs @\:rewritten-rhs
 Ttree @\:final-ttree
 Reason rule failed @\:failure-reason@end(menu)

CONTROL@begin(menu)
 Exit break @\:ok
 Exit break, printing result @\:go
 Try rule and re-enter break afterwards @\:eval@end(menu)

WITH NO RECURSIVE BREAKS@begin(menu)
 :ok! @\(:ok!)
 :go! @\(:go!)
 :eval! @\(:eval!)@end(menu)

WITH RUNES MONITORED DURING RECURSION@begin(menu)
 :ok  ... @\(:ok$ sexpr)
 :go ... @\(:go$  sexpr)
 :eval ... @\(:eval$ sexpr)@end(menu)
 Help @\(:help)@end(menu)
 Enter ACL2 Loop @\(lp)
 Quit to Common Lisp @\:Q
 ABORT @\(:good-bye)
@end(menu)

Settings@begin(menu)

Mode @begin(menu)
 Logic   @\ (logic)
 Program @\ (program)
 Guard checking on  @\(set-guard-checking t)
 Guard checking off @\(set-guard-checking nil)@end(menu)

Forcing@begin(menu)
 On @\(enable-forcing)
 Off @\(disable-forcing)@end(menu)

Compile functions@begin(menu)
 On @\(set-compile-fns t)
 Off @\(set-compile-fns nil)@end(menu)

Proof tree@begin(menu)
 Start prooftree @\(start-proof-tree)pre (start-proof-tree nil))
 Stop prooftree @\(stop-proof-tree)post (stop-proof-tree))
 Checkpoint forced goals on @\(checkpoint-forced-goals)@end(menu)

Inhibit Display of @begin(menu)
 Error messages @\(assign inhibit-output-lst '(error))
 Warnings @\(assign inhibit-output-lst '(warning))
 Observations @\(assign inhibit-output-lst '(observation))
 Proof commentary @\(assign inhibit-output-lst '(prove))
 Proof tree @\(assign inhibit-output-lst '(prove))
 Non-proof commentary @\(assign inhibit-output-lst '(event))
 Summary @\(assign inhibit-output-lst '(summary))@end(menu)

Unused Variables@begin(menu)
 Ignore @\(set-ignore-ok t)
 Fail @\(set-ignore-ok nil)
 Warn @\(set-ignore-ok :warn)@end(menu)

Irrelevant formulas@begin(menu)
 Ok @\(set-irrelevant-formals-ok t)
 Fail @\(set-irrelevant-formals-ok nil)
 Warn @\(set-irrelevant-formals-ok :warn)@end(menu)

Load@begin(menu)
Error action@begin(menu)
 Continue @\(set-ld-error-actions :continue)
 Return @\(set-ld-error-actions :return)
 Error @\(set-ld-error-actions :error)@end(menu)

Error triples@begin(menu)
 On @\(set-ld-error-triples t)
 Off @\(set-ld-error-triples nil)@end(menu)

Post eval print@begin(menu)
 On @\(set-ld-post-eval-print t)
 Off @\(set-ld-post-eval-print nil)
 Command conventions @\(set-ld-post-eval-print :command-conventions)@end(menu)

Pre eval filter@begin(menu)
 All @\(set-ld-pre-eval-filter :all)
 Query @\(set-ld-pre-eval-filter :query)@end(menu)

Prompt@begin(menu)
 On @\(set-ld-prompt t)
 Off @\(set-ld-prompt nil)@end(menu)

Skip proofs@begin(menu)
 On @\(set-ld-skip-proofs t)
 Off @\(set-ld-skip-proofs nil)@end(menu)

Verbose: on@begin(menu)
 On @\(set-ld-verbose t)
 Off @\(set-ld-verbose nil)@end(menu)

 Redefinition permitted @\(redef)
 Reset specials @\(reset-ld-specials t)
HACKERS. DANGER!@begin(menu)
 RED redefinition! @\(redef!)@end(menu)
@end(menu)


Books@begin(menu)	
 Print connected book directory @\(cbd)
 Set connected book directory ... @\(set-cbd filename)
 Certify-book ... @\(certify-book filename)
 Include-book ... @\(include-book filename)@end(menu)

ACL2 Help@begin(menu)  
 Documentation @\(doc '<symbol>)
 Arguments @\(args '<symbol>)
 More @\(more)
 Apropos ... @\(docs '<symbol>)
 Info @\(cl2-info)
 Tutorial @\(acl2-info-tutorial)
 Release Notes @\(cl2-info-release-notes)@end(menu)

@end(menu)
@end(menu)



@subsubsection<INFERIOR ACL2 POPUP MENU>

@begin(menu)
 Recent events @\(pbt '(:here -10))
 Print Event @\(pe '<symbol>)
 Print back to @\(pbt '<cd>)
 Disable @\(in-theory (disable <symbol>))
 Enable @\(in-theory (enable <symbol>))
 Undo @\(ubt ':here)
 Undo thru @\(ubt '<cd>)
 Documentation @\(doc '<symbol>)
 Arguments, etc @\(args '<symbol>)
 Verify @\Take clicked on form into interactive prover.
@end(menu)

@subsubsection<KEYS>

@begin(menu)
C-x C-e @\Eval last sexp
C-c C-l @\Load file
C-c C-a @\Show arglist
C-c C-d @\Describe symbol
C-c C-f @\Show function documentation
C-c C-v @\Show variable documentation
C-cl    @\Load file
C-ck    @\Compile file
C-ca    @\Show arglist
C-cd    @\Describe symbol
C-cf    @\Show function documentation
C-cv    @\Show variable documentation
@end(menu)