WIP: brainstorm petname-based marshaling

contract/test/test-marshal-async.js

@@ -0,0 +1,65 @@
+/**
+ * Marshal using petnames and generated IDs as slots.
+ *
+ * TODO: to to reverse-lookup in a hierarchy of names?
+ * how about in a combination of name hierarchy and generated names?
+ *
+ * If board123 and my.brand.MNY refer to the same brand,
+ * the on-chain side will know. But clients can only
+ * synthesize the same remotable if they are given the same slot.
+ *
+ * TODO: how to ensure that we don't serialize sensitive info
+ * such as offer results?
+ */
+
+// @ts-check
+import test from 'ava';
+import { makeMarshal } from '@endo/marshal';
+import { zip } from '../src/objectTools';
+
+const passThru = makeMarshal(undefined, undefined, {
+ serializeBodyFormat: 'smallcaps',
+});
+
+/**
+ * Either a chosen petname path or generated board ID
+ *
+ * @typedef { BoardID | DottedPath } PetSlot
+ * @typedef {`.${string}`} DottedPath
+ * @typedef {`b${string}`} BoardID
+ */
+
+/** @param {string} s */
+const isPet = s => s.startsWith('.');
+
+/**
+ * @param {import('@endo/marshal').CapData<PetSlot>} capData
+ * @param {(...path: string[]) => ERef<any>} lookup
+ */
+const parse = async ({ body, slots }, lookup) => {
+ const valueSlots = await Promise.all(slots.map(ps => lookup(ps)));
+ return passThru.fromCapData(harden({ body, slots: valueSlots }));
+};
+
+/**
+ * @param {import('@endo/pass-style').Passable} specimen
+ * @param {(k: import('@endo/patterns').Key) => BoardID} provideName
+ */
+const format = async (specimen, provideName) => {
+ const { body, slots: valueSlots } = passThru.toCapData(specimen);
+ const slots = await Promise.all(
+ // NEEDSTEST: this presumes we get values via lookup
+ // before we format them
+ valueSlots.map(val => provideName(val)),
+ );
+ return harden({ body, slots });
+};
+
+test.todo('client can refer to $ag.brand.IST without vstorage query');
+test.todo('walletFactory marshals IST using $ag.brand.IST? or boardID?');
+test.todo('client can add an issuer by setting issuer.my.BRD');
+test.todo('send to namesByAddress.agoric1323432.depositFacet');
+test.todo('send to contact.fred.depositFacet');
+test.todo('subsume offer result lookup: $offer.bid34.result');
+test.todo('send invitation received as offer result to contact.fred');
+test.todo('smartWallet does _not_ publish offer result');