Fix #269 - expose links in PreBarrage, add spec

src/nub.ts

@@ -701,8 +701,14 @@ export abstract class Nub extends ComputeNode implements IObservable {
         // If parameter comes from the same Nub, its parent or any of its children,
         // no linking is possible at all.
         // Different Structures in the same parent can get linked to each other.
-        if (! this.isParentOrChildOf(src.nubUid)) {
-
+        if (
+            ! this.isParentOrChildOf(src.nubUid)
+            && ( // check grand-parent for PreBarrage special case @TODO find a generic way
+                 // to perform both tests (synthesise .nubUid and .originNub.uid)
+                ! (this._calcType === CalculatorType.PreBarrage)
+                || ! this.isParentOrChildOf(src.originNub.uid)
+            )
+         ) {
             // 1. own parameters
             for (const p of this._prms) {
                 // if symbol and Nub type are identical
@@ -782,8 +788,8 @@ export abstract class Nub extends ComputeNode implements IObservable {
             }
         }
 
-        // 3. children Nubs, except for PAB and MRC
-        if (! (this instanceof Pab || this instanceof MacrorugoCompound)) {
+        // 3. children Nubs, except for PAB and MRC and PreBarrage
+        if (!(this instanceof Pab || this instanceof MacrorugoCompound || this._calcType === CalculatorType.PreBarrage)) {
             for (const cn of this.getChildren()) {
                 res = res.concat(cn.getLinkableValues(src));
             }