Basic bank account and transaction structures.

Makefile

@@ -45,25 +45,26 @@ BBSTOOL-DEPS=bbstool.scm testing.import.scm listing.import.scm		\
 	progress.import.scm table.import.scm cards.import.scm		\
 	member-parser.import.scm members-print.import.scm		\
 	member-fees.import.scm members-dir.import.scm			\
-	csv-simple.import.scm
+	csv-simple.import.scm bank-account.import.scm
 
 BBSTOOL-SOURCES=bbstool.scm testing.scm listing.scm dictionary.scm	\
 	month.scm period.scm ansi.scm command-line.scm			\
 	members-base.scm utils.scm primes.scm member-record.scm		\
 	configuration.scm progress.scm table.scm cards.scm		\
 	members-print.scm member-parser.scm member-fees.scm		\
-	members-dir.scm csv-simple.scm
+	members-dir.scm csv-simple.scm bank-account.scm
 
 BBSTOOL-OBJS=testing.o listing.o month.o period.o ansi.o dictionary.o	\
 	 command-line.o members-base.o utils.o primes.o			\
 	 member-record.o configuration.o progress.o table.o cards.o	\
-	 members-print.o member-fees.o members-dir.o csv-simple.o
+	 members-print.o member-fees.o members-dir.o csv-simple.o	\
+	 bank-account.o
 
 BBSTOOL-SHARED=testing.so listing.so month.so period.so ansi.so		\
 	 dictionary.so command-line.so members-base.so utils.so		\
 	 primes.so member-record.so configuration.so progress.so	\
 	 table.so cards.so members-print.so member-fees.so		\
-	 members-dir.so csv-simple.so
+	 members-dir.so csv-simple.so bank-account.so
 
 .PHONY: imports
 imports: $(BBSTOOL-DEPS)
@@ -232,3 +233,9 @@ CSV-SIMPLE-SOURCES=csv-simple.scm testing.import.scm
 csv-simple.so: csv-simple.o
 csv-simple.o: csv-simple.import.scm
 csv-simple.import.scm: $(CSV-SIMPLE-SOURCES)
+
+BANK-ACCOUNT-SOURCES=bank-account.scm
+
+bank-account.so: bank-account.o
+bank-account.o: bank-account.import.scm
+bank-account.import.scm: $(BANK-ACCOUNT-SOURCES)

bank-account.scm

@@ -26,12 +26,19 @@
 (declare (unit bank-account))
 
 (module
+ bank-account
  (
   make-bank-account
   bank-account-insert
+
+  make-bank-transaction
+  bank-transaction-varsym
+  bank-transaction-amount
+  bank-transaction-currency
   )
 
- (import scheme)
+ (import scheme
+	 (chicken base))
 
  ;; Bank account is represented as a list with list with the following
  ;; elements: list of transactions, account number, bank code. This
@@ -46,7 +53,14 @@
    (cons (cons transaction (car account))
 	 (cdr account)))
 
+ ;; Creates a new bank transaction. The order of elements is
+ ;; well-suited for fast access to commonly used fields.
  (define (make-bank-transaction id date amount currency varsym)
-   #f)
+   (list varsym amount currency date id))
+
+ ;; Accessors for the fields actually used
+ (define bank-transaction-varsym car)
+ (define bank-transaction-amount cadr)
+ (define bank-transaction-currency caddr)
 
  )