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"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.PipeTransport = exports.IpcTransport = void 0;
var _utils = require("../utils");
/**
* Copyright (c) Microsoft Corporation.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
class PipeTransport {
constructor(pipeWrite, pipeRead, closeable, endian = 'le') {
this._pipeWrite = void 0;
this._data = Buffer.from([]);
this._waitForNextTask = (0, _utils.makeWaitForNextTask)();
this._closed = false;
this._bytesLeft = 0;
this.onmessage = void 0;
this.onclose = void 0;
this._endian = void 0;
this._closeableStream = void 0;
this._pipeWrite = pipeWrite;
this._endian = endian;
this._closeableStream = closeable;
pipeRead.on('data', buffer => this._dispatch(buffer));
pipeRead.on('close', () => {
this._closed = true;
if (this.onclose) this.onclose();
});
this.onmessage = undefined;
this.onclose = undefined;
}
send(message) {
if (this._closed) throw new Error('Pipe has been closed');
const data = Buffer.from(message, 'utf-8');
const dataLength = Buffer.alloc(4);
if (this._endian === 'be') dataLength.writeUInt32BE(data.length, 0);else dataLength.writeUInt32LE(data.length, 0);
this._pipeWrite.write(dataLength);
this._pipeWrite.write(data);
}
close() {
// Let it throw.
this._closeableStream.close();
}
_dispatch(buffer) {
this._data = Buffer.concat([this._data, buffer]);
while (true) {
if (!this._bytesLeft && this._data.length < 4) {
// Need more data.
break;
}
if (!this._bytesLeft) {
this._bytesLeft = this._endian === 'be' ? this._data.readUInt32BE(0) : this._data.readUInt32LE(0);
this._data = this._data.slice(4);
}
if (!this._bytesLeft || this._data.length < this._bytesLeft) {
// Need more data.
break;
}
const message = this._data.slice(0, this._bytesLeft);
this._data = this._data.slice(this._bytesLeft);
this._bytesLeft = 0;
this._waitForNextTask(() => {
if (this.onmessage) this.onmessage(message.toString('utf-8'));
});
}
}
}
exports.PipeTransport = PipeTransport;
class IpcTransport {
constructor(process) {
this._process = void 0;
this._waitForNextTask = (0, _utils.makeWaitForNextTask)();
this.onmessage = void 0;
this.onclose = void 0;
this._process = process;
this._process.on('message', message => this._waitForNextTask(() => {
var _this$onclose, _this$onmessage;
if (message === '<eof>') (_this$onclose = this.onclose) === null || _this$onclose === void 0 ? void 0 : _this$onclose.call(this);else (_this$onmessage = this.onmessage) === null || _this$onmessage === void 0 ? void 0 : _this$onmessage.call(this, message);
}));
}
send(message) {
this._process.send(message);
}
close() {
this._process.send('<eof>');
}
}
exports.IpcTransport = IpcTransport;