Decouple deliberation and metadata.

* Rename ^decision to ^deliberation
* Separate ^decision into ^deliberation and ^deliberation-info

deliberate.scm

@@ -12,18 +12,12 @@
 ;;; See the License for the specific language governing permissions and
 ;;; limitations under the License.
 
-(use-modules (srfi srfi-1)
-	     (goblins)
-	     (goblins vrun)
-	     (goblins actor-lib methods))
-
-;; Commented out until I figure out how to set up a dev environment
-; (define-module (deliberate)
-;  #:use-module (srfi srfi-1)
-;  #:use-module (goblins)
-;  #:use-module (goblins vrun)
-;  #:use-module (goblins actor-lib methods)
-;  #:export (^decision ^ranked-choice-vote ^ranked-ballot ^ranked-preference))
+(define-module (deliberate)
+  #:use-module (srfi srfi-1)
+  #:use-module (goblins)
+  #:use-module (goblins vrun)
+  #:use-module (goblins actor-lib methods)
+  #:export (^deliberation ^deliberation-info ^ranked-choice-vote ^ranked-ballot ^ranked-preference))
 
 ;; Constructor for ^cell
 ;; Stores a single updatable value
@@ -41,7 +35,6 @@
    ((set new-value) (bcom (^cell bcom new-value)))
    ))
 
-
 ;; Constructor for ^attenuated
 ;; Attenuates another goblins object
 ;;
@@ -57,11 +50,27 @@
 	(error (format #f "Message not permitted: [~a]" message))
 	)))
 
-;; Constructor for ^decision
-;; A decision with multiple possible alternative outcomes
+;; Constructor for ^deliberation-info
+;; Information about a deliberation
+;;
+;; Parameters:
+;;   title: Title of the deliberation
+;;
+;; Messages:
+;;   get-title: Return the title
+;;   set-title: new-title: Set the title to new-title
+;;
+(define (^deliberation-info bcom title)
+  (methods
+   ((get-title) title)
+   ((set-title) (bcom (^decision bcom title)))
+   ))
+
+;; Constructor for ^deliberation
+;; A deliberation with multiple possible alternative outcomes
 ;;
 ;; Parameters:
-;;   title: Title of the decision
+;;   title: Title of the deliberation
 ;;
 ;; Messages:
 ;;   get-title: Return the title
@@ -70,18 +79,19 @@
 ;;     represented by the string alt.
 ;;   get-alternatives: Return a list of all alteratives
 ;;
-(define (^decision _bcom title)
+(define (^deliberation _bcom title)
   (let (
-	(title (spawn ^cell title))
+	(info (spawn ^deliberation-info title))
 	(alternatives (spawn ^cell '()))
 	)
     (methods
-     ((get-title) ($ title 'get))
-     ((set-title new-title) ($ title 'set new-title))
+     ((get-title) ($ info 'get-title))
+     ((set-title new-title) ($ info 'set-title new-title))
      ((add-alternative alt)
       (define old-alts ($ alternatives 'get))
       ($ alternatives 'set (cons alt old-alts)))
      ((get-alternatives) ($ alternatives 'get))
+     ((debug-alternatives) alternatives)
      )))
 
 ;; Constructor for ^ranked-preference
@@ -112,7 +122,8 @@
 ;; Allow one constituent to update their rank-order preference
 ;;
 ;; Parameters:
-;;   decision: The decision this ballot applies to
+;;   deliberation-info: deliberation-info relevnt to this ballot
+;;   alternatives: cell containing a list of alternatives
 ;;
 ;; Messages:
 ;;   update-vote f: Updates the constituent's vote on this ballot.
@@ -122,13 +133,13 @@
 ;;   get-preference: Returns a ^ranked-preference associated with this ballot.
 ;;     The object is attenuated to be read-only.
 ;;
-(define (^ranked-ballot _bcom decision)
+(define (^ranked-ballot _bcom deliberation-info alternatives)
   (define ranking (spawn ^ranked-preference '()))
   (methods
    ((update-vote f)
-    (let* ((alternatives ($ decision 'get-alternatives))
-	   (ranks (f alternatives))
-	   (new-ranking (reorder alternatives ranks)))
+    (let* ((alt-list ($ alternatives 'get))
+	   (ranks (f alt-list))
+	   (new-ranking (reorder alt-list ranks)))
       ($ ranking 'set new-ranking)))
    ((get-preference) (spawn ^attenuated ranking '(get get-rank)))
    ))
@@ -137,24 +148,33 @@
 ;; A updateable vote using ranked choice preferences
 ;;
 ;; Parameters:
-;;   decision: The decision this vote refers to
+;;   deliberation-info: deliberation-info relevant to this vote
+;;   alternatives: cell containig list of altenatives
 ;;
 ;; Messages:
 ;;   get-ballots: Return the list of ballots
 ;;   add-ballot: Add a new ballot to this vote and return it
 ;;
-(define (^ranked-choice-vote bcom decision)
+(define (^ranked-choice-vote bcom deliberation-info alternatives)
   (define ballots (spawn ^cell '()))
   (methods
    ((get-ballots) ($ ballots 'get))
    ((add-ballot)
-    (define ballot (spawn ^ranked-ballot decision))
+    (define ballot (spawn ^ranked-ballot deliberation-info alternatives))
     (define old-ballots ($ ballots 'get))
     ($ ballots 'set (cons ballot old-ballots))
     ballot)
+   ((get-profile)
+    ;; This is a very space-heavy representation
+    ;; Would be better to use a hashmap keyed on rankings with counts as values
+    (map (lambda (ballot) ($ ($ ballot 'get-preference) 'get))
+	 ballots))
    ))
 
 
+(define (^social-preference-borda _bcom profile)
+  #f)
+
 ;;; UTILITY CODE
 
 ;; Return a list of integers in the half-open interval [low, high)

test-deliberate.scm

@@ -1,10 +1,15 @@
+(use-modules (deliberate)
+	     (goblins)
+	     (goblins vrun)
+	     (goblins actor-lib methods))
+
 (define a-vat (spawn-vat))
 (define-vat-run a-run a-vat)
-(define dec (a-run (spawn ^decision "Bike Shed")))
-(a-run ($ dec 'add-alternative "red"))
-(a-run ($ dec 'add-alternative "green"))
-(a-run ($ dec 'add-alternative "blue"))
-(define vote (a-run (spawn ^ranked-choice-vote dec)))
+(define delib (a-run (spawn ^deliberation "Bike Shed")))
+(a-run ($ delib 'add-alternative "red"))
+(a-run ($ delib 'add-alternative "green"))
+(a-run ($ delib 'add-alternative "blue"))
+(define vote (a-run (spawn ^ranked-choice-vote delib ($ delib 'debug-alternatives))))
 (define ballot (a-run ($ vote 'add-ballot)))
 
 (define (rank312 alts) '(3 1 2))