From 4a9dac702cfda30448556f479776412ff870e24e Mon Sep 17 00:00:00 2001
From: akr <akr>
Date: Fri, 21 Aug 1998 02:22:08 +0000
Subject: [PATCH] * ew-unit.el (ew-eword-p): Use aref instead of substring.
 (ew-char-decoder): Refined.

* lalr-el.scm (gen-larl1): New function.
---
 ChangeLog   |    7 +++++++
 ew-unit.el  |   26 +++++++++++++-------------
 lalr-el.scm |   19 +++++++++++++++++++
 3 files changed, 39 insertions(+), 13 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index b8e9dc6..c61e101 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+1998-08-21  Tanaka Akira      <akr@jaist.ac.jp>
+
+	* ew-unit.el (ew-eword-p): Use aref instead of substring.
+	(ew-char-decoder): Refined.
+
+	* lalr-el.scm (gen-larl1): New function.
+
 1998-08-20  Tanaka Akira      <akr@jaist.ac.jp>
 
 	* ew-var.el (ew-dynamic-options): The result is now integer instead
diff --git a/ew-unit.el b/ew-unit.el
index f115fab..b658dca 100644
--- a/ew-unit.el
+++ b/ew-unit.el
@@ -39,8 +39,10 @@
   (let ((len (length str)))
     (and
      (<= 3 len)
-     (string= (substring str 0 2) "=?")
-     (string= (substring str (- len 2) len) "?="))))
+     (eq (aref str 0) ?=)
+     (eq (aref str 1) ??)
+     (eq (aref str (- len 2)) ??)
+     (eq (aref str (1- len)) ?=))))
 
 (defun ew-decode-eword (str &optional eword-filter1 eword-filter2)
   (if (string-match ew-anchored-encoded-word-regexp str)
@@ -80,14 +82,12 @@
     ))
 
 (defun ew-char-decoder (charset)
-  (catch 'return 
-    (setq charset (downcase charset))
-    (let ((sym (intern charset))
-	  tmp cs)
-      (when (setq tmp (assq sym ew-charset-aliases))
-	(setq sym (cdr tmp)))
-      (setq cs (intern (concat (symbol-name sym) "-unix")))
-      (when (coding-system-p cs)
-	(throw 'return
-	       (closure-make (lambda (str) (decode-coding-string str cs)) cs)))
-      nil)))
+  (let ((sym (intern (downcase charset)))
+        tmp cs)
+    (when (setq tmp (assq sym ew-charset-aliases))
+      (setq sym (cdr tmp)))
+    (setq cs (intern (concat (symbol-name sym) "-unix")))
+    (when (coding-system-p cs)
+      (closure-make
+        (lambda (str) (decode-coding-string str cs))
+        cs))))
diff --git a/lalr-el.scm b/lalr-el.scm
index 5fe35e1..be9392a 100644
--- a/lalr-el.scm
+++ b/lalr-el.scm
@@ -308,6 +308,25 @@
 (define ngotos          #f)
 (define token-set-size  #f)
 
+(define (gen-larl1 gram output-file header footer . opt)
+  (define (conv-rule-right rr)
+    (if (null? rr)
+      '()
+      (cons (reverse (car rr))
+        (cons (cadr rr)
+          (cons (caddr rr)
+            (conv-rule-right (cdddr rr)))))))
+  (apply gen-lalr1
+    (map
+      (lambda (elt)
+        (if (symbol? elt)
+          elt
+          (cons (car elt) (conv-rule-right (cdr elt)))))
+      gram)
+    output-file
+    header
+    footer
+    opt))
 
 (define (gen-lalr1 gram output-file header footer . opt)
   (initialize-all)
-- 
1.7.10.4