remove Data from marshal and all packages that used it

packages/ERTP/src/displayInfo.js

@@ -6,7 +6,6 @@ import {
   passStyleOf,
   REMOTE_STYLE,
   getInterfaceOf,
-  Data,
 } from '@agoric/marshal';
 
 // TODO: assertSubset and assertKeysAllowed are copied from Zoe. Move
@@ -64,7 +63,7 @@ export const coerceDisplayInfo = allegedDisplayInfo => {
     assert.equal(Reflect.ownKeys(allegedDisplayInfo).length, 0);
     assert.equal(Object.getPrototypeOf(allegedDisplayInfo), Object.prototype);
     assert.equal(getInterfaceOf(allegedDisplayInfo), undefined);
-    return Data({});
+    return harden({});
   }
   allegedDisplayInfo = pureCopy(allegedDisplayInfo);
   assertDisplayInfo(allegedDisplayInfo);

packages/ERTP/test/unitTests/mathHelpers/test-setMathHelpers.js

@@ -6,7 +6,7 @@ import '@agoric/swingset-vat/tools/prepare-test-env';
 // eslint-disable-next-line import/no-extraneous-dependencies
 import test from 'ava';
 
-import { Far, Data } from '@agoric/marshal';
+import { Far } from '@agoric/marshal';
 
 import { amountMath as m, MathKind } from '../../../src';
 import { mockBrand } from './mockBrand';
@@ -118,7 +118,7 @@ const runSetMathHelpersTests = (t, [a, b, c], a2 = undefined) => {
     `m.isEmpty([]) is true`,
   );
   t.throws(
-    () => m.isEmpty({ brand: mockBrand, value: Data({}) }),
+    () => m.isEmpty({ brand: mockBrand, value: harden({}) }),
     { message: `value (an object) must be a Nat or an array` },
     `m.isEmpty({}) throws`,
   );

packages/ERTP/test/unitTests/test-issuerObj.js

@@ -6,7 +6,6 @@ import '@agoric/swingset-vat/tools/prepare-test-env';
 // eslint-disable-next-line import/no-extraneous-dependencies
 import test from 'ava';
 import { E } from '@agoric/eventual-send';
-import { Data } from '@agoric/marshal';
 import { MathKind, makeIssuerKit, amountMath } from '../../src';
 
 test('issuer.getBrand, brand.isMyIssuer', t => {
@@ -51,7 +50,7 @@ test('bad display info', t => {
 });
 
 test('empty display info', t => {
-  const displayInfo = Data({});
+  const displayInfo = harden({});
   const { brand } = makeIssuerKit('fungible', MathKind.NAT, displayInfo);
   t.deepEqual(brand.getDisplayInfo(), displayInfo);
 });

packages/SwingSet/src/kernel/initializeKernel.js

@@ -1,6 +1,6 @@
 /* eslint-disable no-use-before-define */
 
-import { makeMarshal, Far, Data } from '@agoric/marshal';
+import { makeMarshal, Far } from '@agoric/marshal';
 import { assert, details as X } from '@agoric/assert';
 import { assertKnownOptions } from '../assertOptions';
 import { insistVatID } from './id';
@@ -169,7 +169,7 @@ export function initializeKernel(config, hostStorage, verbose = false) {
     const m = makeMarshal(convertValToSlot, undefined, {
       marshalName: 'kernel:bootstrap',
     });
-    const args = harden([Data(vatObj0s), Data(deviceObj0s)]);
+    const args = harden([vatObj0s, deviceObj0s]);
     // queueToExport() takes kernel-refs (ko+NN, kd+NN) in s.slots
     const rootSlot = makeVatRootObjectSlot();
     const resultKpid = doQueueToExport(

packages/cosmic-swingset/lib/ag-solo/vats/captp.js

@@ -2,7 +2,6 @@
 // in its own makeHardener, etc.
 import { makeCapTP } from '@agoric/captp/lib/captp';
 import { E } from '@agoric/eventual-send';
-import { Data } from '@agoric/marshal';
 
 export const getCapTPHandler = (
   send,
@@ -12,7 +11,7 @@ export const getCapTPHandler = (
   const chans = new Map();
   const doFallback = async (method, ...args) => {
     if (!fallback) {
-      return Data({});
+      return harden({});
     }
     return E(fallback)[method](...args);
   };

packages/cosmic-swingset/lib/ag-solo/vats/vat-http.js

@@ -114,7 +114,7 @@ export function buildRootObject(vatPowers) {
         ...decentralObjects, // TODO: Remove; replaced by .agoric
         ...privateObjects, // TODO: Remove; replaced by .local
         ...handyObjects,
-        agoric: { ...decentralObjects }, // TODO: maybe needs Data()???
+        agoric: { ...decentralObjects },
         local: { ...privateObjects },
       };
 

packages/dapp-svelte-wallet/api/src/lib-wallet.js

@@ -17,7 +17,7 @@ import { makeIssuerTable } from '@agoric/zoe/src/issuerTable';
 
 import { E } from '@agoric/eventual-send';
 
-import { makeMarshal, passStyleOf, Far, Data } from '@agoric/marshal';
+import { makeMarshal, passStyleOf, Far } from '@agoric/marshal';
 import { makeNotifierKit, observeNotifier } from '@agoric/notifier';
 import { makePromiseKit } from '@agoric/promise-kit';
 
@@ -470,7 +470,7 @@ export function makeWallet({
     // Payments are made for the keywords in proposal.give.
     const keywords = [];
 
-    const paymentPs = Object.entries(proposal.give || Data({})).map(
+    const paymentPs = Object.entries(proposal.give || harden({})).map(
       ([keyword, amount]) => {
         const purse = purseKeywordRecord[keyword];
         assert(
@@ -491,7 +491,7 @@ export function makeWallet({
     // for the offer.
     const payments = await Promise.all(paymentPs);
 
-    const paymentKeywordRecord = Data(
+    const paymentKeywordRecord = harden(
       Object.fromEntries(keywords.map((keyword, i) => [keyword, payments[i]])),
     );
 
@@ -691,15 +691,15 @@ export function makeWallet({
 
   const compileProposal = proposalTemplate => {
     const {
-      want = Data({}),
-      give = Data({}),
+      want = harden({}),
+      give = harden({}),
       exit = { onDemand: null },
     } = proposalTemplate;
 
     const purseKeywordRecord = {};
 
     const compile = amountKeywordRecord => {
-      return Data(
+      return harden(
         Object.fromEntries(
           Object.entries(amountKeywordRecord).map(
             ([keyword, { pursePetname, value }]) => {

packages/dapp-svelte-wallet/api/test/test-lib-wallet.js

@@ -7,7 +7,6 @@ import test from 'ava';
 // eslint-disable-next-line import/no-extraneous-dependencies
 import bundleSource from '@agoric/bundle-source';
 import { makeIssuerKit, makeLocalAmountMath } from '@agoric/ertp';
-import { Data } from '@agoric/marshal';
 
 import { makeZoe } from '@agoric/zoe';
 import fakeVatAdmin from '@agoric/zoe/src/contractFacet/fakeVatAdmin';
@@ -276,7 +275,7 @@ test('lib-wallet dapp suggests issuer, instance, installation petnames', async t
 
       inviteHandleBoardId,
 
-      proposalTemplate: Data({}),
+      proposalTemplate: {},
     });
 
   const rawId = '1588645041696';
@@ -1201,7 +1200,7 @@ test('addOffer makeContinuingInvitation', async t => {
       instance,
       description: 'FirstThing',
     },
-    proposalTemplate: Data({}),
+    proposalTemplate: harden({}),
   };
 
   await wallet.addOffer(offer);
@@ -1224,7 +1223,7 @@ test('addOffer makeContinuingInvitation', async t => {
       priorOfferId: rawId,
       description: 'SecondThing',
     },
-    proposalTemplate: Data({}),
+    proposalTemplate: harden({}),
   };
 
   await wallet.addOffer(offer2);

packages/marshal/index.js

@@ -9,7 +9,6 @@ export {
   makeMarshal,
   Remotable,
   Far,
-  Data,
 } from './src/marshal';
 
 export { stringify, parse } from './src/marshal-stringify';

packages/marshal/src/marshal.js

@@ -248,42 +248,13 @@ function isPassByCopyArray(val) {
   return true;
 }
 
-/**
- * Everything having to do with a `dataProto` is a temporary kludge until
- * we're on the other side of #2018. TODO remove.
- */
-const dataProto = harden(
-  create(objectPrototype, {
-    [PASS_STYLE]: { value: 'copyRecord' },
-  }),
-);
-
-const isDataProto = proto => {
-  if (!isFrozen(proto)) {
-    return false;
-  }
-  if (getPrototypeOf(proto) !== objectPrototype) {
-    return false;
-  }
-  const {
-    // @ts-ignore
-    [PASS_STYLE]: passStyleDesc,
-    ...rest
-  } = getOwnPropertyDescriptors(proto);
-  return (
-    passStyleDesc &&
-    passStyleDesc.value === 'copyRecord' &&
-    ownKeys(rest).length === 0
-  );
-};
-
 /**
  * @param {Passable} val
  * @returns {boolean}
  */
 function isPassByCopyRecord(val) {
   const proto = getPrototypeOf(val);
-  if (proto !== objectPrototype && !isDataProto(proto)) {
+  if (proto !== objectPrototype) {
     return false;
   }
   const descs = getOwnPropertyDescriptors(val);
@@ -948,20 +919,14 @@ export function makeMarshal(
         }
         return ibidTable.finish(result);
       } else {
-        let result = ibidTable.start({});
-        const names = ownKeys(rawTree);
-        if (names.length === 0) {
-          // eslint-disable-next-line no-use-before-define
-          result = Data(result);
-        } else {
-          for (const name of names) {
-            assert.typeof(
-              name,
-              'string',
-              X`Property ${name} of ${rawTree} must be a string`,
-            );
-            result[name] = fullRevive(rawTree[name]);
-          }
+        const result = ibidTable.start({});
+        for (const name of ownKeys(rawTree)) {
+          assert.typeof(
+            name,
+            'string',
+            X`Property ${name} of ${rawTree} must be a string`,
+          );
+          result[name] = fullRevive(rawTree[name]);
         }
         return ibidTable.finish(result);
       }
@@ -1088,34 +1053,3 @@ const Far = (farName, remotable = {}) =>
 
 harden(Far);
 export { Far };
-
-/**
- * Everything having to do with `Data` is a temporary kludge until
- * we're on the other side of #2018. TODO remove.
- *
- * @param {Object} record
- */
-const Data = record => {
-  // Ensure that the record isn't already marked.
-  assert(
-    !(PASS_STYLE in record),
-    X`Record ${record} is already marked as a ${q(record[PASS_STYLE])}`,
-  );
-  // Ensure that the record isn't already frozen.
-  assert(!isFrozen(record), X`Record ${record} is already frozen`);
-  assert(
-    getPrototypeOf(record) === objectPrototype,
-    X`A record ${record} must initially inherit from Object.prototype`,
-  );
-
-  setPrototypeOf(record, dataProto);
-  harden(record);
-  assert(
-    isPassByCopyRecord(record),
-    X`Data() can only be applied to otherwise pass-by-copy records`,
-  );
-  return record;
-};
-
-harden(Data);
-export { Data };

packages/marshal/test/test-marshal.js

@@ -3,7 +3,6 @@ import test from 'ava';
 import {
   Remotable,
   Far,
-  Data,
   getInterfaceOf,
   makeMarshal,
   passStyleOf,
@@ -467,18 +466,13 @@ test('records', t => {
         props[symNonenumFunc] = { enumerable: false, value: () => 0 };
       } else if (opt === 'nonenumSymbolGetFunc') {
         props[symNonenumGetFunc] = { enumerable: false, get: () => () => 0 };
-      } else if (opt === 'data') {
-        mark = 'data';
       } else if (opt === 'far') {
         mark = 'far';
       } else {
         throw Error(`unknown option ${opt}`);
       }
     }
     const o = create(objectPrototype, props);
-    if (mark === 'data') {
-      return Data(o);
-    }
     if (mark === 'far') {
       return Far('iface', o);
     }
@@ -492,7 +486,6 @@ test('records', t => {
   const NOACC = /Records must not contain accessors/;
   const RECENUM = /Record fields must be enumerable/;
   const NOMETH = /cannot serialize objects with non-methods/;
-  const NODATA = /Data\(\) can only be applied to otherwise pass-by-copy records/;
 
   // empty objects
 
@@ -506,12 +499,7 @@ test('records', t => {
   // harden({})
   t.deepEqual(ser(build()), emptyData);
 
-  // Data({key1: 'data'})
-  // old: not applicable, Data() not yet added
-  // interim1: pass-by-copy without warning, but Data() is not necessary
-  // final: not applicable, Data() removed
   const key1Data = { body: JSON.stringify({ key1: 'data' }), slots: [] };
-  t.deepEqual(ser(build('enumStringData', 'data')), key1Data);
 
   // Serialized data should roundtrip properly
   t.deepEqual(unser(ser(harden({}))), {});
@@ -521,13 +509,6 @@ test('records', t => {
   t.deepEqual(ser(unser(emptyData)), emptyData);
   t.deepEqual(ser(unser(key1Data)), key1Data);
 
-  // Data({})
-  // old: not applicable, Data() not yet added
-  // interim1: pass-by-copy without warning
-  // interim2: pass-by-copy without warning
-  // final: not applicable, Data() removed
-  t.deepEqual(ser(build('data')), emptyData); // interim 1+2
-
   // Far('iface', {})
   // all cases: pass-by-ref
   t.deepEqual(ser(build('far')), yesIface);
@@ -556,9 +537,6 @@ test('records', t => {
   t.deepEqual(ser(build('nonenumStringFunc')), noIface);
   t.deepEqual(ser(build('nonenumSymbolFunc')), noIface);
 
-  // Data({ key: data, key: func }) : rejected
-  shouldThrow(['data', 'enumStringData', 'enumStringFunc'], NODATA);
-
   // Far('iface', { key: data, key: func }) : rejected
   // (some day this might add auxilliary data, but not now
   shouldThrow(['far', 'enumStringData', 'enumStringFunc'], CSO);

packages/swingset-runner/src/vat-launcher.js

@@ -1,5 +1,5 @@
 import { E } from '@agoric/eventual-send';
-import { Far, Data } from '@agoric/marshal';
+import { Far } from '@agoric/marshal';
 
 /*
  * Vat to launch other vats.
@@ -41,14 +41,14 @@ export function buildRootObject(_vatPowers, vatParameters) {
         // eslint-disable-next-line no-await-in-loop
         const vat = await E(vatMaker).createVatByName(
           bundleName,
-          { metered: vatParameters.metered, vatParameters: Data(subvatParameters) },
+          { metered: vatParameters.metered, vatParameters: harden(subvatParameters) },
         );
         vatRoots[vatName] = vat.root;
       }
       vatRoots.vatAdmin = vats.vatAdmin;
       bootstrapRoot = vatRoots[vatParameters.config.bootstrap];
       // prettier-ignore
-      return E(bootstrapRoot).bootstrap(Data(vatRoots), devices);
+      return E(bootstrapRoot).bootstrap(harden(vatRoots), devices);
     },
     runBenchmarkRound() {
       return E(bootstrapRoot).runBenchmarkRound();