From e25e7d812f2f3f9a195b7b201b8bd99a5228b108 Mon Sep 17 00:00:00 2001
From: Wilson Snyder <wsnyder@wsnyder.org>
Date: Tue, 2 Apr 2019 20:05:16 -0400
Subject: [PATCH] Fix verilog-mode vmm statements and AUTOINPUTREG ignores.

* lisp/progmodes/verilog-mode.el (verilog-vmm-statement-re):
Fix vmm statement regexps. Reported by Mattias Engdegard.
(verilog-auto-reg-input)
(verilog-auto-reg-input-assigned-ignore-regexp): For AUTOINPUTREG,
allow ignoring assignments with new
`verilog-auto-reg-input-assigned-ignore-regexp' variable, bug1401.
Reported by David Rogoff.
---
 lisp/progmodes/verilog-mode.el | 34 ++++++++++++++++++++--------------
 1 file changed, 20 insertions(+), 14 deletions(-)

diff --git a/lisp/progmodes/verilog-mode.el b/lisp/progmodes/verilog-mode.el
index f55cf0002d0..7b9c3921fba 100644
--- a/lisp/progmodes/verilog-mode.el
+++ b/lisp/progmodes/verilog-mode.el
@@ -121,7 +121,7 @@
 ;;
 
 ;; This variable will always hold the version number of the mode
-(defconst verilog-mode-version "2019-03-05-39b4dac-vpo-GNU"
+(defconst verilog-mode-version "2019-04-02-5d62d3f-vpo-GNU"
   "Version of this Verilog mode.")
 (defconst verilog-mode-release-emacs t
   "If non-nil, this version of Verilog mode was released with Emacs itself.")
@@ -1285,6 +1285,13 @@ See the \\[verilog-faq] for examples on using this."
   :type '(choice (const nil) regexp))
 (put 'verilog-auto-input-ignore-regexp 'safe-local-variable 'stringp)
 
+(defcustom verilog-auto-reg-input-assigned-ignore-regexp nil
+  "If non-nil, when creating AUTOINPUTREG, ignore signals matching this regexp."
+  :version "27.1"
+  :group 'verilog-mode-auto
+  :type '(choice (const nil) regexp))
+(put 'verilog-auto-reg-input-assigned-ignore-regexp 'safe-local-variable 'stringp)
+
 (defcustom verilog-auto-inout-ignore-regexp nil
   "If non-nil, when creating AUTOINOUT, ignore signals matching this regexp.
 See the \\[verilog-faq] for examples on using this."
@@ -2144,14 +2151,7 @@ find the errors."
        ) nil ) ) )
 
 (defconst verilog-vmm-statement-re
-  (eval-when-compile
-    (verilog-regexp-opt
-     '(
-       "`vmm_\\(data\\|env\\|scenario\\|subenv\\|xactor\\)_member_\\(scalar\\|string\\|enum\\|vmm_data\\|channel\\|xactor\\|subenv\\|user_defined\\)\\(_array\\)?"
-       ;; "`vmm_xactor_member_enum_array"
-       ;; "`vmm_xactor_member_scalar_array"
-       ;; "`vmm_xactor_member_scalar"
-       ) nil )))
+  "`vmm_\\(data\\|env\\|scenario\\|subenv\\|xactor\\)_member_\\(scalar\\|string\\|enum\\|vmm_data\\|channel\\|xactor\\|subenv\\|user_defined\\)\\(_array\\)?")
 
 (defconst verilog-ovm-statement-re
   (eval-when-compile
@@ -2973,7 +2973,8 @@ find the errors."
      ;; `timescale time_unit / time_precision
      "\\<\\(`timescale\\)\\>\\s-+10\\{0,2\\}\\s-*[munpf]?s\\s-*/\\s-*10\\{0,2\\}\\s-*[munpf]?s"
      "\\)\\|\\(?:"
-     ;; `define and `if can span multiple lines if line ends in '\'. NOTE: `if is not IEEE 1800-2012
+     ;; `define and `if can span multiple lines if line ends in '\'.
+     ;; NOTE: `if is not IEEE 1800-2012.
      ;; from http://www.emacswiki.org/emacs/MultilineRegexp
      (concat "\\<\\(`define\\|`if\\)\\>"  ; directive
              "\\s-+"  ; separator
@@ -12078,15 +12079,18 @@ Typing \\[verilog-auto] will make this into:
 
 (defun verilog-auto-reg-input ()
   "Expand AUTOREGINPUT statements, as part of \\[verilog-auto].
-Make reg statements instantiation inputs that aren't already declared.
-This is useful for making a top level shell for testing the module that is
-to be instantiated.
+Make reg statements instantiation inputs that aren't already
+declared or assigned to.  This is useful for making a top level
+shell for testing the module that is to be instantiated.
 
 Limitations:
   This ONLY detects inputs of AUTOINSTants (see `verilog-read-sub-decls').
 
   This does NOT work on memories, declare those yourself.
 
+  Assignments cause the assigned-to variable not to be declared unless
+  the name matches `verilog-auto-reg-input-assigned-ignore-regexp'.
+
 An example (see `verilog-auto-inst' for what else is going on here):
 
 	module ExampRegInput (o,i);
@@ -12124,7 +12128,9 @@ Typing \\[verilog-auto] will make this into:
 		       (append (verilog-subdecls-get-inputs modsubdecls)
 			       (verilog-subdecls-get-inouts modsubdecls))
 		       (append (verilog-decls-get-signals moddecls)
-			       (verilog-decls-get-assigns moddecls))))))
+                               (verilog-signals-not-matching-regexp
+                                (verilog-decls-get-assigns moddecls)
+                                verilog-auto-reg-input-assigned-ignore-regexp))))))
       (when sig-list
 	(verilog-forward-or-insert-line)
 	(verilog-insert-indent "// Beginning of automatic reg inputs (for undeclared instantiated-module inputs)\n")
-- 
2.39.2