mirror of
https://github.com/denoland/deno.git
synced 2024-11-26 16:09:27 -05:00
72fe9bb470
This commit renames "deno_core::InternalModuleLoader" to "ExtModuleLoader" and changes the specifiers used by the modules loaded from this loader to "ext:". "internal:" scheme was really ambiguous and it's more characters than "ext:", which should result in slightly smaller snapshot size. Closes https://github.com/denoland/deno/issues/18020
352 lines
8.9 KiB
TypeScript
352 lines
8.9 KiB
TypeScript
// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
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// Copyright Joyent, Inc. and other Node contributors.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to permit
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// persons to whom the Software is furnished to do so, subject to the
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// following conditions:
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//
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// The above copyright notice and this permission notice shall be included
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// in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
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// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
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// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
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// USE OR OTHER DEALINGS IN THE SOFTWARE.
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import { ownerSymbol } from "ext:deno_node/internal/async_hooks.ts";
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import {
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kArrayBufferOffset,
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kBytesWritten,
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kLastWriteWasAsync,
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LibuvStreamWrap,
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streamBaseState,
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WriteWrap,
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} from "ext:deno_node/internal_binding/stream_wrap.ts";
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import { isUint8Array } from "ext:deno_node/internal/util/types.ts";
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import { errnoException } from "ext:deno_node/internal/errors.ts";
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import { getTimerDuration, kTimeout } from "ext:deno_node/internal/timers.mjs";
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import { setUnrefTimeout } from "ext:deno_node/timers.ts";
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import { validateFunction } from "ext:deno_node/internal/validators.mjs";
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import { codeMap } from "ext:deno_node/internal_binding/uv.ts";
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import { Buffer } from "ext:deno_node/buffer.ts";
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export const kMaybeDestroy = Symbol("kMaybeDestroy");
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export const kUpdateTimer = Symbol("kUpdateTimer");
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export const kAfterAsyncWrite = Symbol("kAfterAsyncWrite");
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export const kHandle = Symbol("kHandle");
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export const kSession = Symbol("kSession");
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export const kBuffer = Symbol("kBuffer");
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export const kBufferGen = Symbol("kBufferGen");
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export const kBufferCb = Symbol("kBufferCb");
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// deno-lint-ignore no-explicit-any
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function handleWriteReq(req: any, data: any, encoding: string) {
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const { handle } = req;
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switch (encoding) {
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case "buffer": {
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const ret = handle.writeBuffer(req, data);
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if (streamBaseState[kLastWriteWasAsync]) {
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req.buffer = data;
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}
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return ret;
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}
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case "latin1":
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case "binary":
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return handle.writeLatin1String(req, data);
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case "utf8":
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case "utf-8":
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return handle.writeUtf8String(req, data);
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case "ascii":
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return handle.writeAsciiString(req, data);
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case "ucs2":
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case "ucs-2":
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case "utf16le":
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case "utf-16le":
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return handle.writeUcs2String(req, data);
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default: {
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const buffer = Buffer.from(data, encoding);
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const ret = handle.writeBuffer(req, buffer);
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if (streamBaseState[kLastWriteWasAsync]) {
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req.buffer = buffer;
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}
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return ret;
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}
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}
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}
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// deno-lint-ignore no-explicit-any
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function onWriteComplete(this: any, status: number) {
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let stream = this.handle[ownerSymbol];
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if (stream.constructor.name === "ReusedHandle") {
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stream = stream.handle;
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}
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if (stream.destroyed) {
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if (typeof this.callback === "function") {
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this.callback(null);
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}
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return;
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}
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if (status < 0) {
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const ex = errnoException(status, "write", this.error);
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if (typeof this.callback === "function") {
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this.callback(ex);
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} else {
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stream.destroy(ex);
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}
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return;
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}
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stream[kUpdateTimer]();
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stream[kAfterAsyncWrite](this);
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if (typeof this.callback === "function") {
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this.callback(null);
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}
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}
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function createWriteWrap(
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handle: LibuvStreamWrap,
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callback: (err?: Error | null) => void,
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) {
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const req = new WriteWrap<LibuvStreamWrap>();
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req.handle = handle;
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req.oncomplete = onWriteComplete;
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req.async = false;
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req.bytes = 0;
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req.buffer = null;
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req.callback = callback;
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return req;
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}
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export function writevGeneric(
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// deno-lint-ignore no-explicit-any
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owner: any,
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// deno-lint-ignore no-explicit-any
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data: any,
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cb: (err?: Error | null) => void,
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) {
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const req = createWriteWrap(owner[kHandle], cb);
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const allBuffers = data.allBuffers;
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let chunks;
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if (allBuffers) {
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chunks = data;
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for (let i = 0; i < data.length; i++) {
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data[i] = data[i].chunk;
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}
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} else {
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chunks = new Array(data.length << 1);
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for (let i = 0; i < data.length; i++) {
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const entry = data[i];
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chunks[i * 2] = entry.chunk;
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chunks[i * 2 + 1] = entry.encoding;
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}
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}
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const err = req.handle.writev(req, chunks, allBuffers);
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// Retain chunks
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if (err === 0) {
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req._chunks = chunks;
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}
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afterWriteDispatched(req, err, cb);
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return req;
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}
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export function writeGeneric(
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// deno-lint-ignore no-explicit-any
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owner: any,
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// deno-lint-ignore no-explicit-any
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data: any,
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encoding: string,
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cb: (err?: Error | null) => void,
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) {
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const req = createWriteWrap(owner[kHandle], cb);
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const err = handleWriteReq(req, data, encoding);
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afterWriteDispatched(req, err, cb);
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return req;
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}
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function afterWriteDispatched(
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// deno-lint-ignore no-explicit-any
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req: any,
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err: number,
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cb: (err?: Error | null) => void,
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) {
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req.bytes = streamBaseState[kBytesWritten];
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req.async = !!streamBaseState[kLastWriteWasAsync];
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if (err !== 0) {
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return cb(errnoException(err, "write", req.error));
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}
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if (!req.async && typeof req.callback === "function") {
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req.callback();
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}
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}
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// Here we differ from Node slightly. Node makes use of the `kReadBytesOrError`
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// entry of the `streamBaseState` array from the `stream_wrap` internal binding.
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// Here we pass the `nread` value directly to this method as async Deno APIs
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// don't grant us the ability to rely on some mutable array entry setting.
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export function onStreamRead(
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// deno-lint-ignore no-explicit-any
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this: any,
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arrayBuffer: Uint8Array,
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nread: number,
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) {
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// deno-lint-ignore no-this-alias
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const handle = this;
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let stream = this[ownerSymbol];
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if (stream.constructor.name === "ReusedHandle") {
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stream = stream.handle;
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}
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stream[kUpdateTimer]();
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if (nread > 0 && !stream.destroyed) {
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let ret;
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let result;
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const userBuf = stream[kBuffer];
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if (userBuf) {
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result = stream[kBufferCb](nread, userBuf) !== false;
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const bufGen = stream[kBufferGen];
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if (bufGen !== null) {
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const nextBuf = bufGen();
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if (isUint8Array(nextBuf)) {
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stream[kBuffer] = ret = nextBuf;
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}
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}
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} else {
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const offset = streamBaseState[kArrayBufferOffset];
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const buf = Buffer.from(arrayBuffer, offset, nread);
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result = stream.push(buf);
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}
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if (!result) {
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handle.reading = false;
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if (!stream.destroyed) {
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const err = handle.readStop();
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if (err) {
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stream.destroy(errnoException(err, "read"));
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}
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}
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}
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return ret;
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}
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if (nread === 0) {
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return;
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}
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if (nread !== codeMap.get("EOF")) {
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// CallJSOnreadMethod expects the return value to be a buffer.
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// Ref: https://github.com/nodejs/node/pull/34375
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stream.destroy(errnoException(nread, "read"));
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return;
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}
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// Defer this until we actually emit end
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if (stream._readableState.endEmitted) {
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if (stream[kMaybeDestroy]) {
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stream[kMaybeDestroy]();
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}
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} else {
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if (stream[kMaybeDestroy]) {
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stream.on("end", stream[kMaybeDestroy]);
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}
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if (handle.readStop) {
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const err = handle.readStop();
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if (err) {
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// CallJSOnreadMethod expects the return value to be a buffer.
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// Ref: https://github.com/nodejs/node/pull/34375
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stream.destroy(errnoException(err, "read"));
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return;
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}
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}
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// Push a null to signal the end of data.
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// Do it before `maybeDestroy` for correct order of events:
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// `end` -> `close`
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stream.push(null);
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stream.read(0);
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}
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}
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export function setStreamTimeout(
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// deno-lint-ignore no-explicit-any
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this: any,
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msecs: number,
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callback?: () => void,
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) {
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if (this.destroyed) {
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return this;
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}
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this.timeout = msecs;
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// Type checking identical to timers.enroll()
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msecs = getTimerDuration(msecs, "msecs");
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// Attempt to clear an existing timer in both cases -
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// even if it will be rescheduled we don't want to leak an existing timer.
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clearTimeout(this[kTimeout]);
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if (msecs === 0) {
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if (callback !== undefined) {
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validateFunction(callback, "callback");
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this.removeListener("timeout", callback);
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}
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} else {
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this[kTimeout] = setUnrefTimeout(this._onTimeout.bind(this), msecs);
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if (this[kSession]) {
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this[kSession][kUpdateTimer]();
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}
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if (callback !== undefined) {
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validateFunction(callback, "callback");
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this.once("timeout", callback);
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}
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}
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return this;
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}
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