Add tag util module.

src/Makefile

@@ -43,7 +43,7 @@ BBSTOOL-DEPS=bbstool.scm testing.import.scm listing.import.scm		\
 	bank-fio.import.scm members-payments.import.scm			\
 	web-static.import.scm environment.import.scm			\
 	mailman.import.scm util-set-list.import.scm			\
-	util-time.import.scm
+	util-time.import.scm util-tag.import.scm
 
 BBSTOOL-OBJS=bbstool.o testing.o listing.o month.o period.o ansi.o	\
 	 dictionary.o command-line.o members-base.o utils.o primes.o	\
@@ -51,7 +51,7 @@ BBSTOOL-OBJS=bbstool.o testing.o listing.o month.o period.o ansi.o	\
 	 members-print.o member-fees.o members-dir.o csv-simple.o	\
 	 bank-account.o bank-fio.o members-payments.o member-parser.o	\
 	 web-static.o environment.o mailman.o util-set-list.o		\
-	 util-time.o
+	 util-time.o util-tag.o
 
 .PHONY: imports
 imports: $(BBSTOOL-DEPS)
@@ -217,7 +217,7 @@ bank-fio.import.scm: $(BANK-FIO-SOURCES)
 MEMBERS-PAYMENTS-SOURCES=members-payments.scm bank-account.import.scm	\
 	dictionary.import.scm member-fees.import.scm			\
 	period.import.scm configuration.import.scm utils.import.scm	\
-	progress.import.scm
+	progress.import.scm bank-fio.import.scm
 
 members-payments.o: members-payments.import.scm
 members-payments.import.scm: $(MEMBERS-PAYMENTS-SOURCES)
@@ -235,12 +235,13 @@ environment.o: environment.import.scm
 environment.import.scm: $(ENVIRONMENT-SOURCES)
 
 MAILMAN-SOURCES=mailman.scm utils.import.scm progress.import.scm	\
-	util-set-list.scm
+	util-set-list.import.scm
 
 mailman.o: mailman.import.scm
 mailman.import.scm: $(MAILMAN-SOURCES)
 
-UTIL-SET-LIST-SOURCES=util-set-list.scm testing.import.scm
+UTIL-SET-LIST-SOURCES=util-set-list.scm testing.import.scm	\
+	util-tag.import.scm
 
 util-set-list.o: util-set-list.import.scm
 util-set-list.import.scm: $(UTIL-SET-LIST-SOURCES)
@@ -249,3 +250,8 @@ UTIL-TIME-SOURCES=util-time.scm
 
 util-time.o: util-time.import.scm
 util-time.import.scm: $(UTIL-TIME-SOURCES)
+
+UTIL-TAG-SOURCES=util-tag.scm
+
+util-tag.o: util-tag.import.scm
+util-tag.import.scm: $(UTIL-TAG-SOURCES)

src/util-set-list.scm

@@ -53,24 +53,11 @@
 
  (import scheme
 	 (chicken base)
-	 (chicken string)
+	 testing
-	 (chicken random)
+	 util-tag)
-	 testing)
 
  ;; Tag used for identifying list sets from this module
- (define TAG-LSET
+ (define TAG-LSET (make-tag LSET))
-   (string-intersperse
-    (cons "LSET-"
-	  (map (lambda (n)
-		 (substring
-		  (number->string
-		   (+ 256 (char->integer n))
-		   16)
-		  1))
-	       (string->list
-		(random-bytes
-		 (make-string 8)))))
-    ""))
 
  ;; Creates new list set using given equality procedure
  (define (make-lset . equality?)

src/util-tag.scm

@@ -0,0 +1,64 @@
+;;
+;; util-tag.scm
+;;
+;; Implementation of data structure tags.
+;;
+;; ISC License
+;;
+;; Copyright 2023 Brmlab, z.s.
+;; Dominik Pantůček <dominik.pantucek@trustica.cz>
+;;
+;; Permission to use, copy, modify, and/or distribute this software
+;; for any purpose with or without fee is hereby granted, provided
+;; that the above copyright notice and this permission notice appear
+;; in all copies.
+;; 
+;; THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
+;; WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
+;; WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
+;; AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR
+;; CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
+;; OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
+;; NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+;; CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+;;
+
+(declare (unit util-tag))
+
+(module
+ util-tag
+ (
+  make-tag
+  util-tag-make
+  )
+
+ (import scheme
+	 (chicken string)
+	 (chicken random))
+
+ ;; Syntactic wrapper to allow easy tag creation
+ (define-syntax make-tag
+   (syntax-rules ()
+     ((_ tag)
+      (util-tag-make 'tag))))
+
+ ;; Creates a tag symbol based on symbol
+ (define (util-tag-make sym)
+   (string->symbol
+    (string-intersperse
+     (cons
+      (symbol->string sym)
+      (cons
+       "-"
+       (map (lambda (n)
+	      (substring
+	       (number->string
+		(+ 256 (char->integer n))
+		16)
+	       1))
+	    (string->list
+	     (random-bytes
+	      (make-string 8))))))
+     "")))
+
+ )