fix: cheap auxdata

Agoric · Dec 4, 2022 · 85225cc · 85225cc
1 parent c863b17
commit 85225cc
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Showing 11 changed files with 658 additions and 160 deletions.
diff --git a/packages/ERTP/src/paymentLedger.js b/packages/ERTP/src/paymentLedger.js
@@ -101,6 +101,9 @@ export const vivifyPaymentLedger = (
     getAmountShape() {
       return amountShape;
     },
+    aux() {
+      return brandAuxData;
+    },
   });
 
   const emptyAmount = AmountMath.makeEmpty(brand, assetKind);
@@ -110,6 +113,13 @@ export const vivifyPaymentLedger = (
     elementShape,
   );
 
+  const brandAuxData = harden({
+    name,
+    assetKind,
+    displayInfo,
+    amountShape,
+  });
+
   const { IssuerI, MintI, PaymentI, PurseIKit } = makeIssuerInterfaces(
     brand,
     assetKind,

diff --git a/packages/ERTP/src/typeGuards.js b/packages/ERTP/src/typeGuards.js
@@ -141,11 +141,19 @@ export const DisplayInfoShape = M.splitRecord(
 
 // //////////////////////// Interfaces /////////////////////////////////////////
 
+export const BrandAuxDataShape = harden({
+  name: M.string(),
+  assetKind: AssetKindShape,
+  displayInfo: DisplayInfoShape,
+  amountShape: M.pattern(),
+});
+
 export const BrandI = M.interface('Brand', {
   isMyIssuer: M.callWhen(M.await(IssuerShape)).returns(M.boolean()),
   getAllegedName: M.call().returns(M.string()),
   getDisplayInfo: M.call().returns(DisplayInfoShape),
   getAmountShape: M.call().returns(M.pattern()),
+  aux: M.call().returns(BrandAuxDataShape),
 });
 
 /**