From d250d79e5bf7e5d4e1239a4f135d1325ffe8cf56 Mon Sep 17 00:00:00 2001
From: matz <matz@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Sat, 6 Sep 2008 22:34:46 +0000
Subject: * misc/ruby-mode.el, misc/ruby-electric.el: use regexp-opt where  
 possible for more efficient regexps.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@19205 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 misc/ruby-electric.el |  4 ++--
 misc/ruby-mode.el     | 47 +++++++++++++++++++++++++++++++----------------
 2 files changed, 33 insertions(+), 18 deletions(-)

(limited to 'misc')

diff --git a/misc/ruby-electric.el b/misc/ruby-electric.el
index c361089938..e305d55afd 100644
--- a/misc/ruby-electric.el
+++ b/misc/ruby-electric.el
@@ -67,8 +67,8 @@
     (?\` . ?\`)
     (?\" . ?\")))
 
-(defcustom ruby-electric-simple-keywords-re 
-  "\\(def\\|if\\|class\\|module\\|unless\\|case\\|while\\|do\\|until\\|for\\|begin\\)"
+(defcustom ruby-electric-simple-keywords-re
+  (regexp-opt '("def" "if" "class" "module" "unless" "case" "while" "do" "until" "for" "begin") t)
   "*Regular expresion matching keywords for which closing 'end'
 is to be inserted."
   :type 'regexp :group 'ruby-electric)
diff --git a/misc/ruby-mode.el b/misc/ruby-mode.el
index 996df17f53..7811033e38 100644
--- a/misc/ruby-mode.el
+++ b/misc/ruby-mode.el
@@ -13,37 +13,50 @@
        (substring ruby-mode-revision (match-beginning 0) (match-end 0)))
   "Ruby mode version number.")
 
+(defconst ruby-block-beg-keywords
+  '("class" "module" "def" "if" "unless" "case" "while" "until" "for" "begin" "do")
+  "Keywords at the beginning of blocks.")
+
 (defconst ruby-block-beg-re
-  "class\\|module\\|def\\|if\\|unless\\|case\\|while\\|until\\|for\\|begin\\|do"
-  "Regexp to match the beginning of blocks in ruby-mode.")
+  (regexp-opt ruby-block-beg-keywords)
+  "Regexp to match the beginning of blocks.")
 
 (defconst ruby-non-block-do-re
-  "\\(while\\|until\\|for\\|rescue\\)\\>[^_]"
+  (concat (regexp-opt '("while" "until" "for" "rescue") t) "\\_>")
   "Regexp to match")
 
 (defconst ruby-indent-beg-re
-  "\\(\\s *\\(class\\|module\\|def\\)\\)\\|if\\|unless\\|case\\|while\\|until\\|for\\|begin"
+  (concat "\\(\\s *" (regexp-opt '("class" "module" "def") t) "\\)"
+          (regexp-opt '("if" "unless" "case" "while" "until" "for" "begin")))
   "Regexp to match where the indentation gets deeper.")
 
+(defconst ruby-modifier-beg-keywords
+  '("if" "unless" "while" "until")
+  "Modifiers that are the same as the beginning of blocks.")
+
 (defconst ruby-modifier-beg-re
-  "if\\|unless\\|while\\|until"
+  (regexp-opt ruby-modifier-beg-keywords)
   "Regexp to match modifiers same as the beginning of blocks.")
 
 (defconst ruby-modifier-re
-  (concat ruby-modifier-beg-re "\\|rescue")
+  (regexp-opt (cons "rescue" ruby-modifier-beg-keywords))
   "Regexp to match modifiers.")
 
+(defconst ruby-block-mid-keywords
+  '("then" "else" "elsif" "when" "rescue" "ensure")
+  "Keywords where the indentation gets shallower in middle of block statements.")
+
 (defconst ruby-block-mid-re
-  "then\\|else\\|elsif\\|when\\|rescue\\|ensure"
+  (regexp-opt ruby-block-mid-keywords)
   "Regexp to match where the indentation gets shallower in middle of block statements.")
 
-(defconst ruby-block-op-re
-  "and\\|or\\|not"
-  "Regexp to match ")
+(defconst ruby-block-ops
+  '("and" "or" "not")
+  "Block operators.")
 
 (defconst ruby-block-hanging-re
-  (concat ruby-modifier-beg-re "\\|" ruby-block-op-re)
-  )
+  (regexp-opt (append ruby-modifier-beg-keywords ruby-block-op-keywords))
+  "Regexp to match hanging block modifiers.")
 
 (defconst ruby-block-end-re "\\<end\\>")
 
@@ -395,9 +408,11 @@ The variable ruby-indent-level controls the amount of indentation.
 	    (and (looking-at ruby-symbol-re)
 		 (skip-chars-backward ruby-symbol-chars)
 		 (cond
-		  ((or (looking-at (concat "\\<\\(" ruby-block-beg-re
-					   "|" ruby-block-op-re
-					   "|" ruby-block-mid-re "\\)\\>")))
+		  ((looking-at (regexp-opt
+                                (append ruby-block-beg-keywords
+                                        ruby-block-op-keywords
+                                        ruby-block-mid-keywords)
+                                'words))
 		   (goto-char (match-end 0))
 		   (not (looking-at "\\s_")))
 		  ((eq option 'expr-qstr)
@@ -556,7 +571,7 @@ The variable ruby-indent-level controls the amount of indentation.
        ((looking-at (concat "\\<\\(" ruby-block-beg-re "\\)\\>"))
 	(and
 	 (save-match-data
-	   (or (not (looking-at "do\\>[^_]"))
+	   (or (not (looking-at "do\\_>"))
 	       (save-excursion
 		 (back-to-indentation)
 		 (not (looking-at ruby-non-block-do-re)))))
-- 
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