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bf9930066d
This PR is intentionally ugly. It duplicates all of the code in cli/js2/ into cli/tsc/ ... because it's very important that we all understand that this code is unnecessarily duplicated in our binary. I hope this ugliness provides the motivation to clean it up. The typescript git submodule is removed, because it's a very large repo and contains all sorts of stuff we don't need. Instead the necessary files are copied directly into the deno repo. Hence +200k lines. COMPILER_SNAPSHOT.bin size ``` master 3448139 this branch 3320972 ``` Fixes #6812
84 lines
2 KiB
JavaScript
84 lines
2 KiB
JavaScript
// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
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((window) => {
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const core = window.Deno.core;
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const util = window.__bootstrap.util;
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const getErrorClass = window.__bootstrap.errors.getErrorClass;
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// Using an object without a prototype because `Map` was causing GC problems.
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const promiseTable = Object.create(null);
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let _nextPromiseId = 1;
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function nextPromiseId() {
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return _nextPromiseId++;
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}
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function decode(ui8) {
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return JSON.parse(core.decode(ui8));
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}
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function encode(args) {
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return core.encode(JSON.stringify(args));
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}
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function unwrapResponse(res) {
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if (res.err != null) {
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throw new (getErrorClass(res.err.kind))(res.err.message);
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}
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util.assert(res.ok != null);
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return res.ok;
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}
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function asyncMsgFromRust(resUi8) {
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const res = decode(resUi8);
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util.assert(res.promiseId != null);
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const promise = promiseTable[res.promiseId];
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util.assert(promise != null);
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delete promiseTable[res.promiseId];
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promise.resolve(res);
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}
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function sendSync(
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opName,
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args = {},
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...zeroCopy
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) {
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util.log("sendSync", opName);
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const argsUi8 = encode(args);
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const resUi8 = core.dispatchByName(opName, argsUi8, ...zeroCopy);
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util.assert(resUi8 != null);
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const res = decode(resUi8);
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util.assert(res.promiseId == null);
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return unwrapResponse(res);
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}
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async function sendAsync(
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opName,
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args = {},
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...zeroCopy
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) {
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util.log("sendAsync", opName);
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const promiseId = nextPromiseId();
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args = Object.assign(args, { promiseId });
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const promise = util.createResolvable();
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const argsUi8 = encode(args);
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const buf = core.dispatchByName(opName, argsUi8, ...zeroCopy);
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if (buf != null) {
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// Sync result.
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const res = decode(buf);
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promise.resolve(res);
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} else {
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// Async result.
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promiseTable[promiseId] = promise;
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}
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const res = await promise;
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return unwrapResponse(res);
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}
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window.__bootstrap.dispatchJson = {
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asyncMsgFromRust,
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sendSync,
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sendAsync,
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};
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})(this);
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