Add POC version of Bazel VS Code extension

Author: Pavel Mitrafanau

.eslintrc.json

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+{
+	"env": {
+		"browser": false,
+		"commonjs": true,
+		"es6": true,
+		"node": true,
+		"mocha": true
+	},
+	"parserOptions": {
+		"ecmaVersion": 2018,
+		"ecmaFeatures": {
+			"jsx": true
+		},
+		"sourceType": "module"
+	},
+	"rules": {
+		"no-const-assign": "warn",
+		"no-this-before-super": "warn",
+		"no-undef": "warn",
+		"no-unreachable": "warn",
+		"no-unused-vars": "warn",
+		"constructor-super": "warn",
+		"valid-typeof": "warn"
+	}
+}

.gitignore

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+node_modules
+.vscode-test/
+*.vsix

.gitmodules

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+[submodule "bazel-ls-eclipse"]
+	path = bazel-ls-eclipse
+	url = https://github.com/salesforce/bazel-ls-eclipse

.vscode/launch.json

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+{
+	"version": "0.2.0",
+	"configurations": [
+		{
+			"name": "Run Extension",
+			"type": "extensionHost",
+			"request": "launch",
+			"runtimeExecutable": "${execPath}",
+			"args": [
+				"--extensionDevelopmentPath=${workspaceFolder}"
+			]
+		},
+		{
+			"name": "Extension Tests",
+			"type": "extensionHost",
+			"request": "launch",
+			"runtimeExecutable": "${execPath}",
+			"args": [
+				"--extensionDevelopmentPath=${workspaceFolder}",
+				"--extensionTestsPath=${workspaceFolder}/test/suite/index"
+			]
+		}
+	]
+}

.vscodeignore

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+.vscode/**
+.vscode-test/**
+test/**
+.gitignore
+**/jsconfig.json
+**/*.map
+**/.eslintrc.json
+gulpfile.js
+node_modules
+bazel-ls-eclipse/**
+!bazel-ls-eclipse/com.salesforce.b2eclipse.jdt.ls/target/com.salesforce.b2eclipse.jdt.ls-*.jar

LICENSE

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+BSD 3-Clause License
+
+Copyright (c) 2020, Salesforce
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+1. Redistributions of source code must retain the above copyright notice, this
+   list of conditions and the following disclaimer.
+
+2. Redistributions in binary form must reproduce the above copyright notice,
+   this list of conditions and the following disclaimer in the documentation
+   and/or other materials provided with the distribution.
+
+3. Neither the name of the copyright holder nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

README.md

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+[![](https://img.shields.io/badge/license-BSD%203-blue.svg)](https://opensource.org/licenses/BSD-3-Clause)
+
+Bazel for Java
+===========================
+
+Installation
+--------------------
+1. [Install](https://code.visualstudio.com/api/working-with-extensions/publishing-extension#installation) `vsce` CLI tool:
+    ```bash
+    npm install -g vsce
+    ```
+2. Clone the repository
+    ```bash
+    git clone --recurse-submodules [email protected]:salesforce/bazel-ls-vscode.git
+    ```
+3. Install the dependencies:
+    ```bash
+    cd bazel-ls-vscode
+    npm install
+    ```
+4. Package the extension:
+    ```bash
+    vsce package
+    ```
+5. Open the _Extensions_ tab in VS Code
+6. Select _Install from VSIX..._ and choose file built in the fourth step
+7. Once installed, restart VS Code

bazel-ls-eclipse

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+const vscode = require('vscode');
+
+function activate() {
+	vscode.window.showInformationMessage('Basel JDT LS is activated');
+}
+
+exports.activate = activate;
+
+function deactivate() {}
+
+module.exports = {
+	activate,
+	deactivate
+}

extension.js

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+// Copyright (c) Microsoft Corporation. All rights reserved.
+// Licensed under the MIT license.
+
+const gulp = require('gulp');
+const cp = require('child_process');
+const path = require('path');
+const serverDir = path.join(__dirname, 'bazel-ls-eclipse');
+
+gulp.task('build-plugin', (done) => {
+  cp.execSync(`${mvnw()} clean package`, { cwd: serverDir, stdio: [0, 1, 2] });
+  done();
+});
+
+function isWin() {
+  return /^win/.test(process.platform);
+}
+
+function mvnw() {
+  return isWin() ? 'mvnw.cmd' : './mvnw';
+}