├── .gitignore ├── .vscode ├── launch.json ├── settings.json └── tasks.json ├── CHANGELOG.md ├── Cargo.lock ├── Cargo.toml ├── LICENSE ├── README.md ├── editors └── code │ ├── CHANGELOG.md │ ├── LICENSE │ ├── README.md │ ├── icon │ └── bend.png │ ├── package.json │ ├── pnpm-lock.yaml │ ├── src │ ├── binaries.ts │ └── extension.ts │ ├── syntaxes │ ├── bend.tmLanguage.json │ └── language-configuration.json │ ├── tsconfig.json │ └── webpack.config.js └── src ├── bin └── bend-language-server.rs ├── core ├── diagnostics.rs ├── document.rs ├── mod.rs └── semantic_token.rs ├── language └── mod.rs ├── lib.rs ├── server └── mod.rs └── utils ├── color_wrapper.rs ├── lsp_log.rs ├── mod.rs └── rope.rs /.gitignore: -------------------------------------------------------------------------------- 1 | /target 2 | node_modules 3 | out/ 4 | .pnpm-debug.log 5 | *.ast 6 | dist/ 7 | *.vsix -------------------------------------------------------------------------------- /.vscode/launch.json: -------------------------------------------------------------------------------- 1 | // A launch configuration that compiles the extension and then opens it inside a new window 2 | { 3 | "version": "0.1.0", 4 | "configurations": [ 5 | { 6 | "type": "extensionHost", 7 | "request": "launch", 8 | "name": "Launch Client", 9 | "runtimeExecutable": "${execPath}", 10 | "args": [ 11 | "--extensionDevelopmentPath=${workspaceRoot}/editors/code" 12 | ], 13 | "outFiles": [ 14 | "${workspaceRoot}/editors/code/out/**/*.js" 15 | ], 16 | "preLaunchTask": { 17 | "type": "npm", 18 | "script": "watch" 19 | }, 20 | "env": { 21 | "BEND_LS_PATH": "${workspaceRoot}/target/debug/bend-language-server" 22 | } 23 | }, 24 | // { 25 | // "type": "node", 26 | // "request": "attach", 27 | // "name": "Attach to Server", 28 | // "port": 6009, 29 | // "restart": true, 30 | // "outFiles": ["${workspaceRoot}/server/out/**/*.js"] 31 | // }, 32 | { 33 | "name": "Language Server E2E Test", 34 | "type": "extensionHost", 35 | "request": "launch", 36 | "runtimeExecutable": "${execPath}", 37 | "args": [ 38 | "--extensionDevelopmentPath=${workspaceRoot}", 39 | "--extensionTestsPath=${workspaceRoot}/editors/code/out/test/index", 40 | "${workspaceRoot}/editors/code/testFixture" 41 | ], 42 | "outFiles": [ 43 | "${workspaceRoot}/editors/code/out/test/**/*.js" 44 | ] 45 | } 46 | ], 47 | "compounds": [ 48 | { 49 | "name": "Client + Server", 50 | "configurations": [ 51 | "Launch Client", 52 | // "Attach to Server" 53 | ] 54 | } 55 | ] 56 | } -------------------------------------------------------------------------------- /.vscode/settings.json: -------------------------------------------------------------------------------- 1 | // Place your settings in this file to overwrite default and user settings. 2 | { 3 | "files.exclude": { 4 | "out": false // set this to true to hide the "out" folder with the compiled JS files 5 | }, 6 | "search.exclude": { 7 | "out": true // set this to false to include "out" folder in search results 8 | }, 9 | // Turn off tsc task auto detection since we have the necessary tasks as npm scripts 10 | "typescript.tsc.autoDetect": "off", 11 | "files.associations": { 12 | ".fantomasignore": "ignore", 13 | "unistd.h": "c" 14 | } 15 | } 16 | -------------------------------------------------------------------------------- /.vscode/tasks.json: -------------------------------------------------------------------------------- 1 | // See https://go.microsoft.com/fwlink/?LinkId=733558 2 | // for the documentation about the tasks.json format 3 | { 4 | "version": "2.0.0", 5 | "tasks": [ 6 | { 7 | "type": "npm", 8 | "script": "compile", 9 | "group": "build", 10 | "presentation": { 11 | "panel": "dedicated", 12 | "reveal": "never" 13 | }, 14 | "problemMatcher": [ 15 | "$tsc" 16 | ] 17 | }, 18 | { 19 | "type": "npm", 20 | "script": "watch", 21 | "isBackground": true, 22 | "group": { 23 | "kind": "build", 24 | "isDefault": true 25 | }, 26 | "presentation": { 27 | "panel": "dedicated", 28 | "reveal": "never" 29 | }, 30 | "problemMatcher": [ 31 | "$tsc-watch" 32 | ] 33 | } 34 | ] 35 | } 36 | -------------------------------------------------------------------------------- /CHANGELOG.md: -------------------------------------------------------------------------------- 1 | # Changelog 2 | 3 | All notable changes to the `bend-language-server` Rust project will be documented in this file. 4 | To see changes related to the VSCode extension, see [editors/code/CHANGELOG.md](./editors/code/CHANGELOG.md). 5 | 6 | The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/), 7 | and both this changelog and the crate's versioning scheme follow what the 8 | [Bend repository](https://github.com/HigherOrderCO/Bend) is using at the moment. 9 | 10 | ## [Unreleased] 11 | 12 | ## [0.2.37] - 2024-10-18 13 | 14 | - First full release 15 | 16 | ## [0.2.37-alpha.4] - 2024-09-02 17 | 18 | ### Fixed 19 | 20 | - Multi-byte characters highlighting other characters 21 | 22 | ## [0.2.37-alpha.3] - 2024-08-30 23 | 24 | ### Added 25 | 26 | - Multi-line (block) comments 27 | 28 | ### Fixed 29 | 30 | - Single-line comments 31 | 32 | ## [0.2.37-alpha.2] - 2024-08-27 33 | 34 | ### Added 35 | 36 | - `--version` command to executable 37 | 38 | ## [0.2.37-alpha.1] - 2024-08-23 39 | 40 | First release! 41 | 42 | ### Added 43 | 44 | - Semantic token highlighting through tree-sitter 45 | - Diagnostic reporting 46 | 47 | 48 | [0.2.37-alpha.3]: https://github.com/HigherOrderCO/bend-language-server/ 49 | [0.2.37-alpha.2]: https://github.com/HigherOrderCO/bend-language-server/ 50 | [0.2.37-alpha.1]: https://github.com/HigherOrderCO/bend-language-server/ 51 | [Unreleased]: https://github.com/HigherOrderCO/bend-language-server/ 52 | 53 | # Collaborators 54 | 55 | This project got inspiration from [Pedro Braga](https://github.com/mrpedrobraga)'s initial language server implementation and [Rohan Vashisht](https://github.com/RohanVashisht1234)'s VSCode extension. 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-------------------------------------------------------------------------------- 1 | [package] 2 | name = "bend-language-server" 3 | version = "0.2.37" 4 | description = "Language server for the Bend programming language" 5 | edition = "2021" 6 | license-file = "LICENSE" 7 | repository = "https://github.com/HigherOrderCO/bend-language-server" 8 | homepage = "https://higherorderco.com/" 9 | readme = "README.md" 10 | keywords = ["bend", "language-server", "lsp"] 11 | categories = ["text-editors", "development-tools"] 12 | exclude = [ 13 | ".vscode", 14 | "editors", 15 | ".vscodeignore", 16 | "package.json", 17 | "pnpm-lock.yaml", 18 | "tsconfig.json", 19 | "webpack.config.js", 20 | ] 21 | 22 | [dependencies] 23 | bend-lang = { version = "0.2.37" } 24 | tree-sitter-bend = { version = "0.2.37" } 25 | tower-lsp = { version = "0.20", features = ["proposed"] } 26 | tokio = { version = "1.39", features = [ 27 | "sync", 28 | "macros", 29 | "io-util", 30 | "rt", 31 | "rt-multi-thread", 32 | "io-std", 33 | "time", 34 | ] } 35 | serde = { version = "1.0", features = ["derive"] } 36 | anyhow = "1.0" 37 | tree-sitter = "0.22" 38 | tree-sitter-highlight = "0.22" 39 | serde_json = "1.0" 40 | log = "0.4" 41 | env_logger = "0.11" 42 | dashmap = "6.0" 43 | lazy_static = "1.5" 44 | itertools = "0.13" 45 | ropey = "1.6" 46 | regex = "1.7" 47 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | MIT License 2 | 3 | Copyright (c) 2024 HigherOrderCO 4 | 5 | Permission is hereby granted, free of charge, to any person obtaining a copy 6 | of this software and associated documentation files (the "Software"), to deal 7 | in the Software without restriction, including without limitation the rights 8 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 9 | copies of the Software, and to permit persons to whom the Software is 10 | furnished to do so, subject to the following conditions: 11 | 12 | The above copyright notice and this permission notice shall be included in all 13 | copies or substantial portions of the Software. 14 | 15 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 18 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 19 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 20 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 21 | SOFTWARE. 22 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # bend-language-server 2 | 3 | Language server for the Bend programming language based on the Language Server Protocol (LSP). 4 | 5 | ## Features 6 | 7 | The current features implemented in this language server are 8 | 9 | - Semantic token highlighting 10 | - Code highlighting using the [Bend tree sitter grammar](https://github.com/higherOrderCO/tree-sitter-bend) 11 | - Diagnostic reporting 12 | - Reports compilation warnings, errors, and other information 13 | 14 | We accept contributions and feature requests! 15 | 16 | ## Installation 17 | 18 | ### VSCode extension 19 | 20 | As of this alpha version, we still don't publish compiled releases of the language server, so you'll need to install the [Rust toolchain](https://rustup.rs) to compile it. Afterwards, install the VSCode extension and open a `.bend` file. 21 | 22 | On startup, the extension will ask you if you want it to automatically install the language server executable or if you want to set it up manually with the PATH environment variable. If you choose automatically, the extension will use `cargo` to install it to its local storage. If you want to install it manually, run the following command: 23 | 24 | ``` 25 | cargo install bend-language-server --version 0.2.37 26 | ``` 27 | 28 | Managing the language server manually will require you to update the language server yourself as new versions are published. 29 | 30 | ### Other editors 31 | 32 | We are still not officially supporting other editors; however, if your editor of choice has support for the Language Server Protocol (LSP), you can try plugging it and our language server together. To install the LSP-compliant language server binary, use the Cargo command from the [Rust toolchain](https://rustup.rs): 33 | 34 | ``` 35 | cargo install bend-language-server --version 0.2.37 36 | ``` 37 | 38 | If the toolchain is correctly installed, `bend-language-server` should now be in your path. 39 | 40 | We also have a [tree-sitter grammar](https://github.com/HigherOrderCO/tree-sitter-bend) for syntax highlighting with configuration instructions for Neovim. 41 | 42 | ## Development 43 | 44 | Currently, the language server is only developed and tested for VSCode. Feel free to add contributions specific to other code editors! 45 | 46 | ### VSCode extension 47 | 48 | This project requires the [Rust toolchain](https://rustup.rs) and [pnpm](https://pnpm.io) to build. 49 | 50 | 1. Navigate to the extension directory with `cd editors/code`. 51 | 2. Prepare the Javascript environment with `pnpm i`. 52 | 3. Build the language server with `cargo build`. 53 | 4. Open the project with VSCode. Press F5 or click Launch Client in the Debug panel. 54 | 55 | This should result in a new VSCode window being opened with the `bend-language-server` extension loaded. 56 | -------------------------------------------------------------------------------- /editors/code/CHANGELOG.md: -------------------------------------------------------------------------------- 1 | # Changelog 2 | 3 | All notable changes to this project will be documented in this file. 4 | 5 | The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/), 6 | and this project does not currently adhere to a particular versioning scheme. 7 | 8 | ## [0.3.1] - 2024-09-02 9 | 10 | From this version on, the VSCode extension version will not directly correlate to a specific Bend version. 11 | 12 | ### Added 13 | 14 | - Multi-line (block) comments 15 | 16 | ### Fixed 17 | 18 | - Single line comments 19 | 20 | ## [0.2.37-alpha.1] - 2024-08-23 21 | 22 | First release! 23 | 24 | ### Added 25 | 26 | - Semantic token highlighting through tree-sitter 27 | - Diagnostic reporting 28 | 29 | 30 | [0.3.1]: https://github.com/HigherOrderCO/bend-language-server/ 31 | [0.2.37-alpha.1]: https://github.com/HigherOrderCO/bend-language-server/ 32 | [Unreleased]: https://github.com/HigherOrderCO/bend-language-server/ 33 | 34 | # Collaborators 35 | 36 | This project got inspiration from [Pedro Braga](https://github.com/mrpedrobraga)'s initial language server implementation and [Rohan Vashisht](https://github.com/RohanVashisht1234)'s VSCode extension. Thank you for your collaboration! 37 | -------------------------------------------------------------------------------- /editors/code/LICENSE: -------------------------------------------------------------------------------- 1 | MIT License 2 | 3 | Copyright (c) 2024 HigherOrderCO 4 | 5 | Permission is hereby granted, free of charge, to any person obtaining a copy 6 | of this software and associated documentation files (the "Software"), to deal 7 | in the Software without restriction, including without limitation the rights 8 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 9 | copies of the Software, and to permit persons to whom the Software is 10 | furnished to do so, subject to the following conditions: 11 | 12 | The above copyright notice and this permission notice shall be included in all 13 | copies or substantial portions of the Software. 14 | 15 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 18 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 19 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 20 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 21 | SOFTWARE. 22 | -------------------------------------------------------------------------------- /editors/code/README.md: -------------------------------------------------------------------------------- 1 | # bend-language-server 2 | 3 | Language server for the Bend programming language based on the Language Server Protocol (LSP). 4 | 5 | ## Features 6 | 7 | The current features implemented in this language server are 8 | 9 | - Semantic token highlighting 10 | - Code highlighting using the [Bend tree sitter grammar](https://github.com/higherOrderCO/tree-sitter-bend) 11 | - Diagnostic reporting 12 | - Reports compilation warnings, errors, and other information 13 | 14 | We accept contributions and feature requests! 15 | 16 | ## Installation 17 | 18 | ### VSCode extension 19 | 20 | As of this alpha version, we still don't publish compiled releases of the language server, so you'll need to install the [Rust toolchain](https://rustup.rs) to compile it. Afterwards, install the VSCode extension and open a `.bend` file. 21 | 22 | On startup, the extension will ask you if you want it to automatically install the language server executable or if you want to set it up manually with the PATH environment variable. If you choose automatically, the extension will use `cargo` to install it to its local storage. If you want to install it manually, run the following command: 23 | 24 | ``` 25 | cargo install bend-language-server --version 0.2.37 26 | ``` 27 | 28 | Managing the language server manually will require you to update the language server yourself as new versions are published. 29 | 30 | ### Other editors 31 | 32 | We are still not officially supporting other editors; however, if your editor of choice has support for the Language Server Protocol (LSP), you can try plugging it and our language server together. To install the LSP-compliant language server binary, use the Cargo command from the [Rust toolchain](https://rustup.rs): 33 | 34 | ``` 35 | cargo install bend-language-server --version 0.2.37 36 | ``` 37 | 38 | If the toolchain is correctly installed, `bend-language-server` should now be in your path. 39 | 40 | We also have a [tree-sitter grammar](https://github.com/HigherOrderCO/tree-sitter-bend) for syntax highlighting with configuration instructions for Neovim. 41 | 42 | ## Development 43 | 44 | Currently, the language server is only developed and tested for VSCode. Feel free to add contributions specific to other code editors! 45 | 46 | ### VSCode extension 47 | 48 | This project requires the [Rust toolchain](https://rustup.rs) and [pnpm](https://pnpm.io) to build. 49 | 50 | 1. Navigate to the extension directory with `cd editors/code`. 51 | 2. Prepare the Javascript environment with `pnpm i`. 52 | 3. Build the language server with `cargo build`. 53 | 4. Open the project with VSCode. Press F5 or click Launch Client in the Debug panel. 54 | 55 | This should result in a new VSCode window being opened with the `bend-language-server` extension loaded. 56 | -------------------------------------------------------------------------------- /editors/code/icon/bend.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/HigherOrderCO/bend-language-server/a1cfbf54f4ca261182a4c25496ff4d77c64dcb77/editors/code/icon/bend.png -------------------------------------------------------------------------------- /editors/code/package.json: -------------------------------------------------------------------------------- 1 | { 2 | "name": "bend-language-server", 3 | "description": "Language server for the Bend programming language", 4 | "publisher": "HigherOrderCompany", 5 | "license": "MIT", 6 | "version": "0.3.1", 7 | "categories": [], 8 | "icon": "icon/bend.png", 9 | "keywords": [ 10 | "bend", 11 | "language-server", 12 | "bend-language-server", 13 | "bend-lsp" 14 | ], 15 | "repository": { 16 | "url": "https://github.com/HigherOrderCO/bend-language-server" 17 | }, 18 | "engines": { 19 | "vscode": "^1.85.0" 20 | }, 21 | "activationEvents": [ 22 | "onLanguage:bend" 23 | ], 24 | "main": "./dist/extension.js", 25 | "contributes": { 26 | "languages": [ 27 | { 28 | "id": "bend", 29 | "extensions": [ 30 | ".bend" 31 | ], 32 | "configuration": "syntaxes/language-configuration.json" 33 | } 34 | ], 35 | "configuration": { 36 | "type": "object", 37 | "title": "bend-language-server", 38 | "properties": { 39 | "bend-language-server.trace.server": { 40 | "type": "string", 41 | "scope": "window", 42 | "enum": [ 43 | "off", 44 | "messages", 45 | "verbose" 46 | ], 47 | "enumDescriptions": [ 48 | "No traces", 49 | "Error only", 50 | "Full log" 51 | ], 52 | "default": "off", 53 | "description": "Traces the communication between VS Code and the language server." 54 | }, 55 | "bend.manageLanguageServer": { 56 | "scope": "resource", 57 | "type": "string", 58 | "default": "automatic", 59 | "markdownDescription": "Manager for the `bend-language-server` binary. Can be overridden by `'serverExecutablePath'`", 60 | "enum": [ 61 | "automatic", 62 | "PATH" 63 | ], 64 | "markdownEnumDescriptions": [ 65 | "Automatically download and compile the newest version of `bend-language-server`.", 66 | "Get `bend-language-server` from the PATH environment variable." 67 | ] 68 | }, 69 | "bend.serverExecutablePath": { 70 | "scope": "machine-overridable", 71 | "type": "string", 72 | "default": "", 73 | "markdownDescription": "Manually set a language server executable location." 74 | }, 75 | "bend.cargoExecutablePath": { 76 | "scope": "resource", 77 | "type": "string", 78 | "default": "", 79 | "markdownDescription": "Manually set a Cargo executable path." 80 | } 81 | } 82 | }, 83 | "commands": [ 84 | { 85 | "command": "bend.commands.restartServer", 86 | "title": "Bend: Restart Language Server", 87 | "description": "Restarts the Bend language server extension" 88 | }, 89 | { 90 | "command": "bend.commands.stopServer", 91 | "title": "Bend: Stop Language Server", 92 | "description": "Stops the Bend language server extension" 93 | } 94 | ], 95 | "grammars": [ 96 | { 97 | "language": "bend", 98 | "scopeName": "source.bend", 99 | "path": "syntaxes/bend.tmLanguage.json" 100 | } 101 | ] 102 | }, 103 | "scripts": { 104 | "vscode:prepublish": "npm run build", 105 | "test-compile": "tsc -p ./", 106 | "compile": "cross-env NODE_ENV=production tsc -b", 107 | "watch": "rm -rf dist && tsc -b -w", 108 | "lint": "eslint src --ext ts", 109 | "pretest": "npm run compile && npm run lint", 110 | "test": "node ./out/test/runTest.js", 111 | "build": "webpack --config webpack.config.js", 112 | "package": "vsce package --no-dependencies", 113 | "publish": "vsce publish --no-dependencies", 114 | "package-pre-release": "vsce package --pre-release --no-dependencies", 115 | "publish-pre-release": "vsce publish --pre-release --no-dependencies" 116 | }, 117 | "devDependencies": { 118 | "@electron/rebuild": "^3.6.0", 119 | "@types/glob": "^8.1.0", 120 | "@types/mocha": "^10.0.7", 121 | "@types/node": "^22.4.1", 122 | "@types/which": "^3.0.4", 123 | "@types/vscode": "1.85.0", 124 | "@typescript-eslint/eslint-plugin": "^8.2.0", 125 | "@typescript-eslint/parser": "^8.2.0", 126 | "@vscode/test-electron": "^2.4.1", 127 | "cross-env": "^7.0.2", 128 | "eslint": "^9.7.0", 129 | "glob": "^11.0.0", 130 | "mocha": "^10.6.0", 131 | "os-browserify": "^0.3.0", 132 | "path-browserify": "^1.0.1", 133 | "process": "^0.11.10", 134 | "ts-loader": "^9.5.1", 135 | "typescript": "5.4.5", 136 | "vscode-uri": "^3.0.2", 137 | "webpack": "^5.82.1", 138 | "webpack-cli": "^5.1.4" 139 | }, 140 | "dependencies": { 141 | "dedent-js": "1.0.1", 142 | "fp-ts": "^2.16.9", 143 | "ts-pattern": "^5.3.1", 144 | "vscode-languageclient": "10.0.0-next.7", 145 | "which": "^4.0.0" 146 | } 147 | } 148 | -------------------------------------------------------------------------------- /editors/code/src/binaries.ts: -------------------------------------------------------------------------------- 1 | /* -------------------------------------------------------------------------------------------- 2 | * Copyright (c) Higher Order Company (2024) 3 | * Licensed under the MIT License. See LICENSE in the project root for license information. 4 | * 5 | * This file is based on the Haskell VSCode extension (https://github.com/haskell/vscode-haskell), 6 | * which is also licensed under the MIT license. 7 | * ------------------------------------------------------------------------------------------ */ 8 | 9 | // This module deals with pulling and installing the language server binaries into the system. 10 | 11 | import { ConfigurationTarget, ExtensionContext, ProgressLocation, window, workspace, WorkspaceFolder } from "vscode"; 12 | import { Logger } from "vscode-languageclient"; 13 | import { match } from 'ts-pattern'; 14 | import { execPath } from "process"; 15 | import which from "which"; 16 | import dedent from "dedent-js"; 17 | import path from "path"; 18 | import * as child_process from 'child_process'; 19 | import * as fs from "fs"; 20 | import * as os from "os"; 21 | // Note: if we keep using `fp-ts`, we should probably use this 22 | import * as TE from "fp-ts/lib/TaskEither"; 23 | import * as E from "fp-ts/lib/Either"; 24 | import { pipe } from "fp-ts/lib/function"; 25 | 26 | const BEND_LS_EXE = "bend-language-server"; 27 | // On Windows, the executable needs to be stored with a .exe extension 28 | const EXT = process.platform === "win32" ? ".exe" : ""; 29 | 30 | // The language server can be installed automatically by the extension, be used from the PATH environment 31 | // variable, or configured from a specific location by the user 32 | type ManageLanguageServer = "automatic" | "PATH"; 33 | let manageLS = workspace 34 | .getConfiguration("bend") 35 | .get("manageLanguageServer") as ManageLanguageServer; 36 | 37 | type ProcessCallback = ( 38 | error: child_process.ExecFileException | null, 39 | stdout: string, 40 | stderr: string, 41 | resolve: (value: string | PromiseLike) => void, 42 | reject: (reason?: Error | string) => void 43 | ) => void; 44 | 45 | export interface IEnvVars { 46 | [key: string]: string; 47 | } 48 | 49 | export async function findLanguageServer( 50 | context: ExtensionContext, 51 | logger: Logger, 52 | folder?: WorkspaceFolder 53 | ): Promise> { 54 | logger.info("Looking for the language server"); 55 | 56 | let serverExecutablePath = workspace 57 | .getConfiguration("bend") 58 | .get("serverExecutablePath") as string; 59 | 60 | if (serverExecutablePath) { 61 | // Get the language server from a pre-configured location 62 | return await findConfiguredServerExecutable(logger, folder); 63 | } 64 | 65 | // Create local file storage for the extension 66 | const storagePath = await getStoragePath(context); 67 | if (!fs.existsSync(storagePath)) { 68 | fs.mkdirSync(storagePath); 69 | } 70 | 71 | // First initialization, ask the user how they want to manage the language server 72 | if (!context.globalState.get("pluginInitialized") as boolean | null) { 73 | const message = 74 | "How would you like to manage the Bend Language Server executable?"; 75 | 76 | const popup = window.showInformationMessage( 77 | message, 78 | { modal: true }, 79 | "Automatically (compile via Cargo)", 80 | "Manually via PATH environment variable" 81 | ); 82 | 83 | const decision = (await popup) || null; 84 | match(decision) 85 | .with("Automatically (compile via Cargo)", () => manageLS = "automatic") 86 | .with("Manually via PATH environment variable", () => manageLS = "PATH") 87 | .otherwise(() => { 88 | window.showWarningMessage("Choosing to install the Bend Language Server automatically via Cargo") 89 | manageLS = "automatic"; 90 | }); 91 | 92 | workspace.getConfiguration("bend").update("manageLanguageServer", manageLS, ConfigurationTarget.Global); 93 | context.globalState.update("pluginInitialized", true); 94 | } 95 | 96 | // User wants us to grab `bend-language-server` from the PATH environment variable 97 | if (manageLS == "PATH") { 98 | return pipe( 99 | await findExecutableInPATH(BEND_LS_EXE, context, logger), 100 | E.mapLeft( 101 | error => { 102 | // If PATH management failed, ask management type again on next startup to mitigate misclicks. 103 | // This might be annoying. It could be worthwhile to revisit this decision in the future. 104 | context.globalState.update("pluginInitialized", null); 105 | return error; 106 | } 107 | ) 108 | ); 109 | } 110 | 111 | // Automatically install the latest `bend-language-server` binary. 112 | if (manageLS == "automatic") { 113 | // -> check if installed locally 114 | // -> yes: check if latest version 115 | // -> yes: just run 116 | // -> no: ask to update 117 | // -> yes: update and run 118 | // -> no: just run 119 | // -> no: install and run 120 | 121 | let languageServer = await managedServerExecutableLocation(context); 122 | if (executableExists(languageServer)) { 123 | // Check if latest version is installed. 124 | const newVersion = await getLanguageServerLatestVersion(context, logger); 125 | 126 | const currentVersion = pipe( 127 | await callAsync( 128 | languageServer, 129 | ["--version"], 130 | logger, 131 | undefined, 132 | "Checking current installed version...", 133 | true 134 | ), 135 | E.map(output => output.trim()), 136 | E.getOrElse((_output) => "" /* empty version */) 137 | ) 138 | 139 | return await pipe( 140 | newVersion, 141 | E.match( 142 | async _error => { 143 | // We couldn't find the newest version for some reason... 144 | // Keep this one. 145 | return E.right(languageServer); 146 | }, 147 | async version => { 148 | if (version !== currentVersion) { 149 | return await askToUpdateLanguageServer(languageServer, version, context, logger); 150 | } else { 151 | return E.right(languageServer); 152 | } 153 | } 154 | ) 155 | ); 156 | } else { 157 | // Install the `bend-language-server` binary. 158 | return await pipe( 159 | await getLanguageServerLatestVersion(context, logger), 160 | E.match( 161 | async error => E.left(error), 162 | async version => await installLanguageServer(version, context, logger) 163 | ) 164 | ) 165 | } 166 | } 167 | 168 | return E.left("Invalid configuration for managing the Bend Language Server"); 169 | } 170 | 171 | async function managedServerExecutableLocation(context: ExtensionContext): Promise { 172 | return path.join(await getStoragePath(context), "bin", `${BEND_LS_EXE}${EXT}`); 173 | } 174 | 175 | async function getLanguageServerLatestVersion(context: ExtensionContext, logger: Logger): Promise> { 176 | return pipe( 177 | await callCargo( 178 | ["search", BEND_LS_EXE], 179 | context, 180 | logger, 181 | "Searching for bend-language-server...", 182 | true 183 | ), 184 | E.map( 185 | output => { 186 | let version = /".*"/.exec(output)[0]; 187 | version = version.substring(1, version.length - 1); // quotes 188 | return version; 189 | } 190 | )); 191 | } 192 | 193 | async function askToUpdateLanguageServer(languageServer: string, version: string, context: ExtensionContext, logger: Logger): Promise> { 194 | const decision = await window.showInformationMessage( 195 | `There is a new version of the Bend Language Server (${version}). Would you like to install it?`, 196 | "Yes", 197 | "No" 198 | ); 199 | 200 | if (decision == "Yes") { 201 | // Update the language server 202 | logger.info(`Installing bend-language-server ${version}`); 203 | return await installLanguageServer(version, context, logger); 204 | } 205 | 206 | // Assume the decision was "No" 207 | return E.right(languageServer); 208 | } 209 | 210 | async function installLanguageServer(version: string, context: ExtensionContext, logger: Logger): Promise> { 211 | return await pipe( 212 | await callCargo( 213 | ["install", BEND_LS_EXE, "--version", version, "--root", await getStoragePath(context)], 214 | context, 215 | logger, 216 | "Installing the Bend Language Server... This might take a while.", 217 | true 218 | ), 219 | E.match( 220 | async error => E.left(error), 221 | async _output => E.right(await managedServerExecutableLocation(context)) 222 | ) 223 | ); 224 | } 225 | 226 | async function findConfiguredServerExecutable(logger: Logger, folder?: WorkspaceFolder): Promise> { 227 | let executablePath = workspace.getConfiguration("bend").get("serverExecutablePath") as string; 228 | logger.info(`Trying to find the Bend Language Server binary at ${executablePath}`); 229 | 230 | executablePath = resolvePlaceHolders(executablePath, folder); 231 | logger.info(`Resolved path variables: ${executablePath}`); 232 | 233 | if (executableExists(executablePath)) { 234 | return E.right(executablePath); 235 | } else { 236 | return E.left(dedent` 237 | Could not find the Bend Language Server at ${execPath}. 238 | Consider changing settings for "bend.serverExecutablePath" and "bend.manageLanguageServer". 239 | `); 240 | } 241 | } 242 | 243 | async function findExecutableInPATH(executable: string, _context: ExtensionContext, logger: Logger): Promise> { 244 | if (executableExists(executable)) { 245 | return E.right(executable); 246 | } else { 247 | return E.left(`Could not find ${executable} in PATH`) 248 | } 249 | } 250 | 251 | export function resolvePlaceHolders(path: string, folder?: WorkspaceFolder) { 252 | path = path 253 | .replace('${HOME}', os.homedir) 254 | .replace('${home}', os.homedir) 255 | .replace(/^~/, os.homedir) 256 | .replace('$PATH', process.env.PATH ?? '$PATH') 257 | .replace('${PATH}', process.env.PATH ?? '${PATH}') 258 | .replace('${CARGO_HOME}', process.env.CARGO_HOME); 259 | 260 | if (folder) { 261 | path = path 262 | .replace('${workspaceFolder}', folder.uri.path) 263 | .replace('${workspaceRoot}', folder.uri.path); 264 | } 265 | return path; 266 | } 267 | 268 | export function executableExists(exe: string): boolean { 269 | const isWindows = process.platform === 'win32'; 270 | let newEnv: IEnvVars = resolveServerEnvironmentPATH( 271 | workspace.getConfiguration('bend').get('serverEnvironment') || {} 272 | ); 273 | newEnv = { ...(process.env as IEnvVars), ...newEnv }; 274 | const cmd: string = isWindows ? 'where' : 'which'; 275 | const out = child_process.spawnSync(cmd, [exe], { env: newEnv }); 276 | return out.status === 0 || (which.sync(exe, { nothrow: true, path: newEnv.PATH }) ?? '') !== ''; 277 | } 278 | 279 | export function resolveServerEnvironmentPATH(serverEnv: IEnvVars): IEnvVars { 280 | const pathSep = process.platform === 'win32' ? ';' : ':'; 281 | const path: string[] | null = serverEnv.PATH 282 | ? serverEnv.PATH.split(pathSep).map((p) => resolvePlaceHolders(p)) 283 | : null; 284 | return { 285 | ...serverEnv, 286 | ...(path ? { PATH: path.join(pathSep) } : {}), 287 | }; 288 | } 289 | 290 | async function getStoragePath( 291 | context: ExtensionContext 292 | ): Promise { 293 | return context.globalStorageUri.fsPath; 294 | } 295 | 296 | async function findCargo(_context: ExtensionContext, logger: Logger, folder?: WorkspaceFolder): Promise> { 297 | logger.info("Looking for Cargo..."); 298 | 299 | let cargoExecutable = workspace.getConfiguration("bend").get("cargoExecutablePath") as string; 300 | if (cargoExecutable) { 301 | logger.info(`Looking for Cargo in ${cargoExecutable}...`); 302 | cargoExecutable = resolvePlaceHolders(cargoExecutable, folder); 303 | logger.info(`Translated the path to ${cargoExecutable}`); 304 | if (executableExists(cargoExecutable)) { 305 | return E.right(cargoExecutable); 306 | } else { 307 | return E.left(`Could not find Cargo at ${cargoExecutable}`); 308 | } 309 | } 310 | 311 | if (executableExists(`cargo${EXT}`)) { 312 | // Found it in PATH 313 | return E.right(`cargo${EXT}`); 314 | } 315 | 316 | // We'll try to find the cargo binary by looking around 317 | logger.info("Probing for Cargo..."); 318 | 319 | cargoExecutable = path.join(process.env.CARGO_HOME, "bin", `cargo${EXT}`); 320 | if (executableExists(cargoExecutable)) return E.right(cargoExecutable); 321 | 322 | cargoExecutable = path.join(os.homedir(), ".cargo", "bin", `cargo${EXT}`); 323 | if (executableExists(cargoExecutable)) return E.right(cargoExecutable); 324 | 325 | return E.left(dedent` 326 | Could not find the Cargo toolchain. 327 | Try installing it through rustup (https://rustup.rs) or setting its path through the "bend.cargoExecutablePath" configuration 328 | `); 329 | } 330 | 331 | async function callCargo( 332 | args: string[], 333 | context: ExtensionContext, 334 | logger: Logger, 335 | title?: string, 336 | cancellable?: boolean, 337 | callback?: ProcessCallback 338 | ): Promise> { 339 | if (manageLS !== "automatic") { 340 | return E.left("Tried to call Cargo when bend.manageLanguageServer is not set to automatic"); 341 | } 342 | 343 | return await pipe( 344 | await findCargo(context, logger), 345 | E.match( 346 | async (error) => E.left(error), 347 | async (cargo) => 348 | await callAsync( 349 | cargo, 350 | args, 351 | logger, 352 | undefined, 353 | title, 354 | cancellable, 355 | {}, 356 | callback 357 | ) 358 | ) 359 | ) 360 | } 361 | 362 | async function callAsync( 363 | executablePath: string, 364 | args: string[], 365 | logger: Logger, 366 | dir?: string, 367 | title?: string, 368 | cancellable?: boolean, 369 | envAdd?: IEnvVars, 370 | callback?: ProcessCallback 371 | ): Promise> { 372 | try { 373 | return E.right(await callAsyncThrowable(executablePath, args, logger, dir, title, cancellable, envAdd, callback)); 374 | } catch (e) { 375 | return E.left(e); 376 | } 377 | } 378 | 379 | async function callAsyncThrowable( 380 | executablePath: string, 381 | args: string[], 382 | logger: Logger, 383 | dir?: string, 384 | title?: string, 385 | cancellable?: boolean, 386 | envAdd?: IEnvVars, 387 | callback?: ProcessCallback 388 | ): Promise { 389 | let newEnv: IEnvVars = resolveServerEnvironmentPATH( 390 | workspace.getConfiguration('bend').get('serverEnvironment') || {} 391 | ); 392 | newEnv = { ...(process.env as IEnvVars), ...newEnv, ...(envAdd || {}) }; 393 | return window.withProgress( 394 | { 395 | location: ProgressLocation.Notification, 396 | title, 397 | cancellable, 398 | }, 399 | async (_, token) => { 400 | return new Promise((resolve, reject) => { 401 | const command: string = executablePath + ' ' + args.join(' '); 402 | logger.info(`Executing '${command}' in cwd '${dir ? dir : process.cwd()}'`); 403 | token.onCancellationRequested(() => { 404 | logger.warn(`User canceled the execution of '${command}'`); 405 | }); 406 | // Need to set the encoding to 'utf8' in order to get back a string 407 | // We execute the command in a shell for windows, to allow use .cmd or .bat scripts 408 | const childProcess = child_process 409 | .execFile( 410 | process.platform === 'win32' ? `"${executablePath}"` : executablePath, 411 | args, 412 | { encoding: 'utf8', cwd: dir, shell: process.platform === 'win32', env: newEnv }, 413 | (err, stdout, stderr) => { 414 | if (err) { 415 | logger.error(`Error executing '${command}' with error code ${err.code}`); 416 | logger.error(`stderr: ${stderr}`); 417 | if (stdout) { 418 | logger.error(`stdout: ${stdout}`); 419 | } 420 | } 421 | if (callback) { 422 | callback(err, stdout, stderr, resolve, reject); 423 | } else { 424 | if (err) { 425 | reject( 426 | Error(`\`${command}\` exited with exit code ${err.code}`) 427 | ); 428 | } else { 429 | resolve(stdout?.trim()); 430 | } 431 | } 432 | } 433 | ) 434 | .on('exit', (code, signal) => { 435 | const msg = 436 | `Execution of '${command}' terminated with code ${code}` + (signal ? `and signal ${signal}` : ''); 437 | logger.log(msg); 438 | }) 439 | .on('error', (err) => { 440 | if (err) { 441 | logger.error(`Error executing '${command}': name = ${err.name}, message = ${err.message}`); 442 | reject(err); 443 | } 444 | }); 445 | token.onCancellationRequested(() => childProcess.kill()); 446 | }); 447 | } 448 | ); 449 | } 450 | -------------------------------------------------------------------------------- /editors/code/src/extension.ts: -------------------------------------------------------------------------------- 1 | /* -------------------------------------------------------------------------------------------- 2 | * Copyright (c) Higher Order Company (2024) 3 | * Based on original code by Microsoft Corporation under the MIT License. 4 | * Licensed under the MIT License. See LICENSE in the project root for information. 5 | * ------------------------------------------------------------------------------------------ */ 6 | 7 | import { 8 | languages, 9 | workspace, 10 | commands, 11 | EventEmitter, 12 | ExtensionContext, 13 | window, 14 | InlayHintsProvider, 15 | TextDocument, 16 | CancellationToken, 17 | Range, 18 | InlayHint, 19 | TextDocumentChangeEvent, 20 | ProviderResult, 21 | WorkspaceEdit, 22 | TextEdit, 23 | Selection, 24 | Uri, 25 | } from "vscode"; 26 | 27 | import { 28 | Disposable, 29 | Executable, 30 | LanguageClient, 31 | LanguageClientOptions, 32 | Logger, 33 | NullLogger, 34 | ServerOptions, 35 | } from "vscode-languageclient/node"; 36 | 37 | import { pipe } from "fp-ts/lib/function"; 38 | import * as E from "fp-ts/Either"; 39 | 40 | import { findLanguageServer } from "./binaries"; 41 | 42 | let client: LanguageClient; 43 | 44 | // =================== 45 | // Main extension code 46 | 47 | export async function activate(context: ExtensionContext) { 48 | const logger: Logger = NullLogger; // FIXME 49 | const traceOutputChannel = window.createOutputChannel("Bend Language Server trace"); 50 | traceOutputChannel.appendLine(`Local file storage: ${context.globalStorageUri.fsPath}`); 51 | 52 | // Register editor commands 53 | const restartCommand = commands.registerCommand("bend.commands.restartServer", async () => { 54 | if (client.isRunning()) { 55 | client.info("Stopping the language server."); 56 | await client.stop(); 57 | } 58 | client.info("Starting the language server."); 59 | await client.start(); 60 | }); 61 | context.subscriptions.push(restartCommand); 62 | 63 | const stopCommand = commands.registerCommand("bend.commands.stopServer", async () => { 64 | client.info("Stopping the language server."); 65 | await client.stop(); 66 | }); 67 | context.subscriptions.push(stopCommand); 68 | 69 | // We have to check if `bend-language-server` is installed, and if it's not, try to install it. 70 | const command = process.env.BEND_LS_PATH || pipe( 71 | await findLanguageServer(context, logger), 72 | E.match( 73 | error => { throw new Error(error); }, 74 | languageServer => languageServer 75 | ) 76 | ); 77 | 78 | const run: Executable = { 79 | command, 80 | options: { env: { ...process.env, RUST_LOG: "info" } } 81 | }; 82 | 83 | const debug: Executable = { 84 | command, 85 | options: { env: { ...process.env, RUST_LOG: "debug" } } 86 | }; 87 | 88 | const serverOptions: ServerOptions = { run, debug, }; 89 | 90 | let clientOptions: LanguageClientOptions = { 91 | // Register the server for plain text documents 92 | documentSelector: [{ scheme: "file", language: "bend" }], 93 | synchronize: { 94 | // Notify the server about file changes to '.clientrc files contained in the workspace 95 | // (we don't care about this for now, it was part of the boilerplate) 96 | fileEvents: workspace.createFileSystemWatcher("**/.clientrc"), 97 | }, 98 | traceOutputChannel, 99 | }; 100 | 101 | // Create the language client and start the client. 102 | client = new LanguageClient("bend-language-server", "Bend Language Server", serverOptions, clientOptions); 103 | // activateInlayHints(context); 104 | client.start(); 105 | } 106 | 107 | export function deactivate(): Thenable | undefined { 108 | if (!client) { 109 | return undefined; 110 | } 111 | return client.stop(); 112 | } 113 | 114 | // ================ 115 | // Future additions 116 | 117 | export function activateInlayHints(ctx: ExtensionContext) { 118 | const maybeUpdater = { 119 | hintsProvider: null as Disposable | null, 120 | updateHintsEventEmitter: new EventEmitter(), 121 | 122 | async onConfigChange() { 123 | this.dispose(); 124 | 125 | const event = this.updateHintsEventEmitter.event; 126 | this.hintsProvider = languages.registerInlayHintsProvider( 127 | { scheme: "file", language: "bend" }, 128 | new (class implements InlayHintsProvider { 129 | onDidChangeInlayHints = event; 130 | resolveInlayHint(hint: InlayHint, token: CancellationToken): ProviderResult { 131 | const ret = { 132 | label: hint.label, 133 | ...hint, 134 | }; 135 | return ret; 136 | } 137 | async provideInlayHints( 138 | document: TextDocument, 139 | range: Range, 140 | token: CancellationToken 141 | ): Promise { 142 | const hints = (await client 143 | .sendRequest("custom/inlay_hint", { path: document.uri.toString() }) 144 | .catch(err => null)) as [number, number, string][]; 145 | if (hints == null) { 146 | return []; 147 | } else { 148 | return hints.map(item => { 149 | const [start, end, label] = item; 150 | let startPosition = document.positionAt(start); 151 | let endPosition = document.positionAt(end); 152 | return { 153 | position: endPosition, 154 | paddingLeft: true, 155 | label: [ 156 | { 157 | value: `${label}`, 158 | location: { 159 | uri: document.uri, 160 | range: new Range(1, 0, 1, 0) 161 | }, 162 | command: { 163 | title: "hello world", 164 | command: "helloworld.helloWorld", 165 | arguments: [document.uri], 166 | }, 167 | }, 168 | ], 169 | }; 170 | }); 171 | } 172 | } 173 | })() 174 | ); 175 | }, 176 | 177 | onDidChangeTextDocument({ contentChanges, document }: TextDocumentChangeEvent) { 178 | // debugger 179 | // this.updateHintsEventEmitter.fire(); 180 | }, 181 | 182 | dispose() { 183 | this.hintsProvider?.dispose(); 184 | this.hintsProvider = null; 185 | this.updateHintsEventEmitter.dispose(); 186 | }, 187 | }; 188 | 189 | workspace.onDidChangeConfiguration(maybeUpdater.onConfigChange, maybeUpdater, ctx.subscriptions); 190 | workspace.onDidChangeTextDocument(maybeUpdater.onDidChangeTextDocument, maybeUpdater, ctx.subscriptions); 191 | 192 | maybeUpdater.onConfigChange().catch(console.error); 193 | } 194 | -------------------------------------------------------------------------------- /editors/code/syntaxes/bend.tmLanguage.json: -------------------------------------------------------------------------------- 1 | { 2 | "$schema": "https://raw.githubusercontent.com/martinring/tmlanguage/master/tmlanguage.json", 3 | "name": "bend", 4 | "fileTypes": [ 5 | "bend" 6 | ], 7 | "patterns": [ 8 | { 9 | "name": "comment.block.bend", 10 | "match": "#{([^#]|#[^}])*#}" 11 | }, 12 | { 13 | "name": "comment.line.bend", 14 | "match": "#(\\+(.|\r?\n)|[^\\\n])*" 15 | }, 16 | { 17 | "include": "#operators" 18 | }, 19 | { 20 | "include": "#strings" 21 | }, 22 | { 23 | "include": "#numbers" 24 | }, 25 | { 26 | "include": "#reserved-words" 27 | }, 28 | { 29 | "include": "#operator-dedicated-keywords-statements" 30 | }, 31 | { 32 | "include": "#ctrl-statements" 33 | }, 34 | { 35 | "include": "#special-keywords" 36 | }, 37 | { 38 | "include": "#true-false" 39 | }, 40 | { 41 | "include": "#functions" 42 | }, 43 | { 44 | "name": "string.quoted.double.carbon", 45 | "begin": "\"", 46 | "end": "\"", 47 | "patterns": [ 48 | { 49 | "include": "#string_escapes" 50 | } 51 | ] 52 | }, 53 | { 54 | "include": "#customs" 55 | } 56 | ], 57 | "repository": { 58 | "operators": { 59 | "patterns": [ 60 | { 61 | "name": "keyword.operator.new.bend", 62 | "match": "\\b(\\+|-|\\*|/|!)\\b" 63 | } 64 | ] 65 | }, 66 | "string_escapes": { 67 | "patterns": [ 68 | { 69 | "name": "constant.character.escape.bend", 70 | "match": "\\\\([tnr'\"0\\0]|x[0-9A-F]{2}|u\\{[0-9A-F]{4,}\\})" 71 | } 72 | ] 73 | }, 74 | "special-keywords": { 75 | "patterns": [ 76 | { 77 | "name": "keyword.control.less.bend", 78 | "match": "\\b(def|switch|case|return|if|else|when|match|λ|Some|data|let|use|object|fold|open|do|bind|Name|identity|Bool|ask|with)\\b" 79 | } 80 | ] 81 | }, 82 | "operator-dedicated-keywords-statements": { 83 | "patterns": [ 84 | { 85 | "name": "keyword.bend", 86 | "match": "\\b(bend|None|Cons|Nil|Result|type|lambda)\\b" 87 | } 88 | ] 89 | }, 90 | "reserved-words": { 91 | "patterns": [ 92 | { 93 | "name": "support.type.bend", 94 | "match": "\\b(Node|Leaf|Tree)\\b" 95 | } 96 | ] 97 | }, 98 | "true-false": { 99 | "patterns": [ 100 | { 101 | "name": "keyword.operator.new.bend", 102 | "match": "\\b(True|False|true|false)\\b" 103 | } 104 | ] 105 | }, 106 | "functions": { 107 | "patterns": [ 108 | { 109 | "name": "support.function.bend", 110 | "match": "\\b[a-zA-Z_0-9]+\\s*\\(" 111 | }, 112 | { 113 | "name": "support.function.bend", 114 | "match": "\\b(print)\\b" 115 | } 116 | ] 117 | }, 118 | "customs": { 119 | "patterns": [ 120 | { 121 | "name": "support.class.bend", 122 | "match": "(?<=\\bdata\\s)\\w+" 123 | }, 124 | { 125 | "name": "support.class.bend", 126 | "match": "(?<=\\blet\\s)\\w+" 127 | }, 128 | { 129 | "name": "support.class.bend", 130 | "match": "(?<=\\bSome\\s)\\w+" 131 | }, 132 | { 133 | "name": "support.variable.bend", 134 | "match": "(?<=\\s*\\.)\\w+" 135 | }, 136 | { 137 | "name": "support.variable.bend", 138 | "match": "\\w+(?=\\s*=)" 139 | }, 140 | { 141 | "name": "support.variable.bend", 142 | "match": "\\w+(?=\\s*<\\-)" 143 | }, 144 | { 145 | "name": "support.variable.bend", 146 | "match": "(?<=\\bbend\\s)\\w+" 147 | }, 148 | { 149 | "name": "support.variable.bend", 150 | "match": "(?<=<\\-\\s)\\w+" 151 | }, 152 | { 153 | "name": "support.function.bend", 154 | "match": "(?<=\\bdef\\s)\\w+" 155 | }, 156 | { 157 | "name": "support.function.bend", 158 | "match": "(?<=\\bmatch\\s)\\w+" 159 | }, 160 | { 161 | "name": "support.variable.bend", 162 | "match": "(?<=\\=\\s)\\w+" 163 | }, 164 | { 165 | "name": "support.variable.bend", 166 | "match": "(?<=\\bcase\\s)\\w+" 167 | }, 168 | { 169 | "name": "support.other.bend", 170 | "match": "(?<=\\bobject\\s)\\w+" 171 | }, 172 | { 173 | "name": "support.type.property-name.bend", 174 | "match": "(?<=\\bfold\\s)\\w+" 175 | }, 176 | { 177 | "name": "support.class.bend", 178 | "match": "(?<=\\bopen\\s)\\w+" 179 | }, 180 | { 181 | "name": "support.class.bend", 182 | "match": "(?<=\\bdo\\s)\\w+" 183 | }, 184 | { 185 | "name": "support.class.bend", 186 | "match": "(?<=\\bidentity\\s)\\w+" 187 | }, 188 | { 189 | "name": "support.class.bend", 190 | "match": "(?<=\\blambda\\s)\\w+" 191 | } 192 | ] 193 | }, 194 | "numbers": { 195 | "patterns": [ 196 | { 197 | "name": "constant.numeric.bend", 198 | "match": "\\b\\d+\\b" 199 | }, 200 | { 201 | "name": "constant.numeric.bend", 202 | "match": "\\b\\d+\\.\\d+\\b" 203 | }, 204 | { 205 | "name": "constant.numeric.bend", 206 | "match": "\\b\\d{1,3}(?:_\\d{3})*\\b" 207 | } 208 | ] 209 | } 210 | }, 211 | "scopeName": "source.bend" 212 | } 213 | -------------------------------------------------------------------------------- /editors/code/syntaxes/language-configuration.json: -------------------------------------------------------------------------------- 1 | { 2 | "comments": { 3 | "lineComment": "#" 4 | }, 5 | "brackets": [ 6 | ["{", "}"], 7 | ["[", "]"], 8 | ["(", ")"] 9 | ], 10 | "autoClosingPairs": [ 11 | ["{", "}"], 12 | ["[", "]"], 13 | ["(", ")"], 14 | ["\"", "\""], 15 | ["'", "'"] 16 | ], 17 | "surroundingPairs": [ 18 | ["{", "}"], 19 | ["[", "]"], 20 | ["(", ")"], 21 | ["\"", "\""], 22 | ["'", "'"] 23 | ], 24 | "onEnterRules": [ 25 | { 26 | "beforeText": "^\\s*(?:def|class|for|if|elif|else|try|with|finally|except|async).*?:\\s*$", 27 | "action": { 28 | "indent": "none", 29 | "appendText": " " 30 | } 31 | } 32 | ] 33 | } 34 | -------------------------------------------------------------------------------- /editors/code/tsconfig.json: -------------------------------------------------------------------------------- 1 | { 2 | "compilerOptions": { 3 | "module": "nodenext", 4 | "target": "es2019", 5 | "lib": ["ES2019"], 6 | "outDir": "./dist", 7 | "rootDir": "src", 8 | "sourceMap": true, 9 | "moduleResolution": "nodenext" 10 | }, 11 | "include": ["src"], 12 | "exclude": ["node_modules", ".vscode-test"] 13 | } 14 | -------------------------------------------------------------------------------- /editors/code/webpack.config.js: -------------------------------------------------------------------------------- 1 | //@ts-check 2 | 3 | "use strict"; 4 | 5 | const path = require("path"); 6 | 7 | /**@type {import('webpack').Configuration}*/ 8 | const config = { 9 | target: "node", // vscode extensions run in webworker context for VS Code web 📖 -> https://webpack.js.org/configuration/target/#target 10 | 11 | entry: "./src/extension.ts", // the entry point of this extension, 📖 -> https://webpack.js.org/configuration/entry-context/ 12 | output: { 13 | // the bundle is stored in the 'dist' folder (check package.json), 📖 -> https://webpack.js.org/configuration/output/ 14 | path: path.resolve(__dirname, "dist"), 15 | filename: "extension.js", 16 | libraryTarget: "commonjs2", 17 | devtoolModuleFilenameTemplate: "../[resource-path]", 18 | }, 19 | devtool: "hidden-source-map", 20 | externals: { 21 | vscode: 22 | "commonjs vscode", // the vscode-module is created on-the-fly and must be excluded. Add other modules that cannot be webpack'ed, 📖 -> https://webpack.js.org/configuration/externals/ 23 | }, 24 | resolve: { 25 | // support reading TypeScript and JavaScript files, 📖 -> https://github.com/TypeStrong/ts-loader 26 | mainFields: ["browser", "module", "main"], // look for `browser` entry point in imported node modules 27 | extensions: [".ts", ".js"], 28 | }, 29 | module: { 30 | rules: [ 31 | { 32 | test: /\.ts$/, 33 | exclude: /node_modules/, 34 | use: [ 35 | { 36 | loader: "ts-loader", 37 | }, 38 | ], 39 | }, 40 | ], 41 | } 42 | }; 43 | module.exports = config; 44 | -------------------------------------------------------------------------------- /src/bin/bend-language-server.rs: -------------------------------------------------------------------------------- 1 | use std::env; 2 | 3 | use tokio::io::AsyncWriteExt; 4 | use tower_lsp::{LspService, Server}; 5 | 6 | use bend_language_server::server::*; 7 | 8 | #[tokio::main] 9 | async fn main() { 10 | let stdin = tokio::io::stdin(); 11 | let mut stdout = tokio::io::stdout(); 12 | 13 | if env::args().any(|arg| arg == "--version") { 14 | let version = format!("{}\n", env!("CARGO_PKG_VERSION")); 15 | stdout 16 | .write_all(version.as_bytes()) 17 | .await 18 | .expect("Couldn't write to stdout."); 19 | return; 20 | } 21 | 22 | let (service, socket) = LspService::new(Backend::new); 23 | Server::new(stdin, stdout, socket).serve(service).await; 24 | } 25 | -------------------------------------------------------------------------------- /src/core/diagnostics.rs: -------------------------------------------------------------------------------- 1 | use std::path::Path; 2 | 3 | pub use bend::diagnostics::*; 4 | use bend::{check_book, imports::DefaultLoader, CompileOpts}; 5 | use tower_lsp::lsp_types::{self as lsp, Position}; 6 | use tree_sitter as ts; 7 | 8 | use super::document::Document; 9 | use crate::utils::color_wrapper::treat_colors; 10 | 11 | /// Checks a Bend file and return its diagnostics. 12 | pub fn check(doc: &Document) -> Diagnostics { 13 | let path = Path::new(doc.url.path()); 14 | let diagnostics_config = DiagnosticsConfig::new(Severity::Warning, true); 15 | let compile_opts = CompileOpts::default(); 16 | 17 | let package_loader = DefaultLoader::new(path); 18 | 19 | let diagnostics = bend::load_file_to_book(path, package_loader, diagnostics_config) 20 | .and_then(|mut book| check_book(&mut book, diagnostics_config, compile_opts)); 21 | 22 | match diagnostics { 23 | Ok(d) | Err(d) => d, 24 | } 25 | } 26 | 27 | pub fn lsp_diagnostics(doc: &Document, diagnostics: &Diagnostics) -> Vec { 28 | diagnostics 29 | .diagnostics 30 | // Iter<(DiagnosticOrigin, Vec)> 31 | .iter() 32 | // -> Iter<(DiagnosticOrigin, Diagnostic)> 33 | .flat_map(|(key, vals)| vals.iter().map(move |val| (key, val))) 34 | // Ignore unwanted diagnostics 35 | .filter_map(|(origin, diagnostic)| treat_diagnostic(doc, origin, diagnostic)) 36 | .collect() 37 | } 38 | 39 | fn treat_diagnostic( 40 | doc: &Document, 41 | origin: &DiagnosticOrigin, 42 | diag: &Diagnostic, 43 | ) -> Option { 44 | Some(lsp::Diagnostic { 45 | message: treat_colors(&diag.display_with_origin(origin).to_string()), 46 | severity: match diag.severity { 47 | Severity::Allow => Some(lsp::DiagnosticSeverity::HINT), 48 | Severity::Warning => Some(lsp::DiagnosticSeverity::WARNING), 49 | Severity::Error => Some(lsp::DiagnosticSeverity::ERROR), 50 | }, 51 | range: match origin { 52 | DiagnosticOrigin::Function(name) => find_def(doc, name.as_ref())?, 53 | DiagnosticOrigin::Inet(name) => find_def(doc, name.as_ref())?, 54 | _ => span_to_range(&diag.source.span), 55 | }, 56 | code: None, 57 | code_description: None, 58 | source: Some("bend".into()), 59 | related_information: None, 60 | tags: None, 61 | data: None, 62 | }) 63 | } 64 | 65 | /// Diagnostics with `Rule`, `Function` or `Inet` origins may have their 66 | /// spans including entire definitions, while we would only like to 67 | /// highlight their names. 68 | fn find_def(doc: &Document, name: &str) -> Option { 69 | let query = format!( 70 | r#" 71 | (fun_function_definition 72 | name: (identifier) @name 73 | (#eq? @name "{name}")) 74 | (imp_function_definition 75 | name: (identifier) @name 76 | (#eq? @name "{name}")) 77 | "# 78 | ); 79 | 80 | doc.find_one(&query) 81 | .map(|node| ts_range_to_lsp(node.range())) 82 | } 83 | 84 | fn span_to_range(span: &Option) -> lsp::Range { 85 | span.as_ref() 86 | .map(|span| lsp::Range { 87 | start: Position { 88 | line: span.start.line as u32, 89 | character: span.start.char as u32, 90 | }, 91 | end: Position { 92 | line: span.end.line as u32, 93 | character: span.end.char as u32, 94 | }, 95 | }) 96 | .unwrap_or_default() 97 | } 98 | 99 | pub fn ts_range_to_lsp(range: ts::Range) -> lsp::Range { 100 | lsp::Range { 101 | start: lsp::Position { 102 | line: range.start_point.row as u32, 103 | character: range.start_point.column as u32, 104 | }, 105 | end: lsp::Position { 106 | line: range.end_point.row as u32, 107 | character: range.end_point.column as u32, 108 | }, 109 | } 110 | } 111 | -------------------------------------------------------------------------------- /src/core/document.rs: -------------------------------------------------------------------------------- 1 | use ropey::Rope; 2 | use tower_lsp::lsp_types as lsp; 3 | use tree_sitter as ts; 4 | use tree_sitter_highlight::{self as hg, Highlighter}; 5 | 6 | use crate::language::{bend, bend_parser}; 7 | use crate::utils::rope::TextProviderRope; 8 | 9 | /// Represents a text document open in the client's text editor. 10 | pub struct Document { 11 | pub url: lsp::Url, 12 | pub text: Rope, 13 | pub tree: Option, 14 | pub parser: ts::Parser, 15 | pub highlighter: hg::Highlighter, 16 | // pub components: HashMap 17 | } 18 | 19 | impl Document { 20 | /// Create an empty document for `url`. 21 | pub fn new(url: lsp::Url) -> Self { 22 | Self { 23 | url, 24 | text: Rope::new(), 25 | tree: None, 26 | parser: bend_parser().unwrap(), 27 | highlighter: Highlighter::new(), 28 | } 29 | } 30 | 31 | /// Create a new document with text for `url`. 32 | pub fn new_with_text(url: lsp::Url, text: &str) -> Self { 33 | let mut doc = Self::new(url); 34 | doc.update_whole_text(text); 35 | doc 36 | } 37 | 38 | /// Update the document with entirely new text. 39 | pub fn update_whole_text(&mut self, text: &str) { 40 | self.text = Rope::from_str(text); 41 | self.tree = self.parser.parse(text, None); 42 | } 43 | 44 | pub fn get_tree(&mut self) -> &ts::Tree { 45 | if self.tree.is_none() { 46 | self.do_parse(); 47 | } 48 | self.tree.as_ref().expect("tried to get empty tree") 49 | } 50 | 51 | /// Find up to one node based on a tree-sitter query. 52 | pub fn find_one(&self, query: &str) -> Option { 53 | let mut cursor = ts::QueryCursor::new(); 54 | let query = ts::Query::new(&bend(), query).unwrap(); 55 | let root = self.tree.as_ref()?.root_node(); 56 | 57 | cursor 58 | .captures(&query, root, &TextProviderRope(&self.text)) 59 | .flat_map(|(m, _)| m.captures) 60 | .next() 61 | .map(|capture| capture.node) 62 | } 63 | 64 | fn do_parse(&mut self) -> Option { 65 | self.parser.parse_with( 66 | &mut |start_byte, _| { 67 | self.text 68 | .byte_slice(start_byte..) 69 | .chunks() 70 | .next() 71 | .unwrap_or("") 72 | }, 73 | self.tree.as_ref(), 74 | ) 75 | } 76 | } 77 | -------------------------------------------------------------------------------- /src/core/mod.rs: -------------------------------------------------------------------------------- 1 | pub mod diagnostics; 2 | pub mod document; 3 | pub mod semantic_token; 4 | -------------------------------------------------------------------------------- /src/core/semantic_token.rs: -------------------------------------------------------------------------------- 1 | use std::collections::HashMap; 2 | 3 | use itertools::Itertools; 4 | use ropey::Rope; 5 | use tower_lsp::lsp_types::{Range, SemanticToken, SemanticTokenType}; 6 | use tree_sitter_bend::HIGHLIGHTS_QUERY; 7 | use tree_sitter_highlight::{HighlightConfiguration, HighlightEvent}; 8 | 9 | use super::document::Document; 10 | use crate::language::bend; 11 | 12 | lazy_static::lazy_static! { 13 | /// Tree sitter capture names into LSP semantic token types. 14 | /// Changes to this table don't need to be added anywhere else due to the structures below. 15 | pub static ref NAME_TO_TOKEN_TYPE: HashMap<&'static str, SemanticTokenType> = { 16 | HashMap::from([ 17 | ("variable", SemanticTokenType::VARIABLE), 18 | ("variable.parameter", SemanticTokenType::PARAMETER), 19 | ("variable.member", SemanticTokenType::ENUM_MEMBER), 20 | ("property", SemanticTokenType::TYPE), 21 | ("keyword", SemanticTokenType::KEYWORD), 22 | ("keyword.conditional", SemanticTokenType::KEYWORD), 23 | ("keyword.function", SemanticTokenType::KEYWORD), 24 | ("keyword.return", SemanticTokenType::KEYWORD), 25 | ("keyword.repeat", SemanticTokenType::KEYWORD), 26 | ("keyword.type", SemanticTokenType::KEYWORD), 27 | ("string", SemanticTokenType::STRING), 28 | ("function", SemanticTokenType::FUNCTION), 29 | ("function.call", SemanticTokenType::FUNCTION), 30 | ("type", SemanticTokenType::TYPE), 31 | // ("constructor", SemanticTokenType::?), 32 | ("character", SemanticTokenType::STRING), 33 | ("character.special", SemanticTokenType::STRING), 34 | ("number", SemanticTokenType::NUMBER), 35 | ("number.float", SemanticTokenType::NUMBER), 36 | ("comment", SemanticTokenType::COMMENT), 37 | // ("punctuation", SemanticTokenType::new("operator")), 38 | // ("punctuation.delimiter", SemanticTokenType::new("operator")), 39 | // ("punctuation.bracket", SemanticTokenType::new("operator")), 40 | ("operator", SemanticTokenType::OPERATOR), 41 | ]) 42 | }; 43 | 44 | /// Legend for token types. 45 | /// This is sent to the LSP client with the semantic tokens capabilities. 46 | pub static ref LEGEND_TOKEN_TYPE: Vec = 47 | NAME_TO_TOKEN_TYPE.values().cloned().unique().collect(); 48 | 49 | /// Tree sitter highlighting names. 50 | /// This is used to perform syntax highlighting with tree sitter. 51 | pub static ref HIGHLIGHT_NAMES: Vec<&'static str> = 52 | NAME_TO_TOKEN_TYPE.keys().copied().collect(); 53 | 54 | /// Translate indices from `HIGHLIGHT_NAMES` to indices from `LEGEND_TOKEN_TYPE`. 55 | pub static ref HIGHLIGHT_INDEX_TO_LSP_INDEX: HashMap = { 56 | let token_type_index: HashMap = LEGEND_TOKEN_TYPE.iter().enumerate().map(|(i, v)| (v.clone(), i)).collect(); 57 | let highlight_index: HashMap<&&str, usize> = HIGHLIGHT_NAMES.iter().enumerate().map(|(i, v)| (v, i)).collect(); 58 | NAME_TO_TOKEN_TYPE.iter().map(|(key, val)| (highlight_index[key], token_type_index[val])).collect() 59 | }; 60 | 61 | /// Global configuration for syntax highlighting. 62 | pub static ref HIGHLIGHTER_CONFIG: HighlightConfiguration = { 63 | let mut config = HighlightConfiguration::new(bend(), "bend", HIGHLIGHTS_QUERY, "", "").unwrap(); 64 | config.configure(&HIGHLIGHT_NAMES); 65 | config 66 | }; 67 | } 68 | 69 | /// Generate the semantic tokens of a document for syntax highlighting. 70 | pub fn semantic_tokens(doc: &mut Document, range: Option) -> Vec { 71 | let code = doc.text.to_string(); // TODO: this is bad 72 | let highlights = doc 73 | .highlighter 74 | .highlight(&HIGHLIGHTER_CONFIG, code.as_bytes(), None, |_| None) 75 | .unwrap(); 76 | 77 | // Get byte indices of line positions in the range, if it exists 78 | let range = range.map(|r| { 79 | let rstart = doc.text.line_to_byte(r.start.line as usize); 80 | let rend = doc.text.line_to_byte(r.end.line as usize + 1); 81 | rstart..rend 82 | }); 83 | 84 | let mut tokens = vec![]; // result vector 85 | let mut types = vec![]; // token type stack 86 | let mut pre_line = 0; // calculate line deltas between tokens 87 | let mut pre_start = 0; // calculate index deltas between tokens 88 | for event in highlights { 89 | match event { 90 | Result::Ok(HighlightEvent::HighlightStart(h)) => types.push(h.0), 91 | Result::Ok(HighlightEvent::HighlightEnd) => drop(types.pop()), 92 | Result::Ok(HighlightEvent::Source { mut start, end }) => { 93 | // Ranged or full semantic tokens call 94 | if let Some(range) = &range { 95 | // If we still haven't gotten to the start of the range, continue. 96 | if end < range.start { 97 | continue; 98 | } 99 | // If we got past the end of the range, stop. 100 | if range.end < start { 101 | break; 102 | } 103 | } 104 | 105 | let token = types 106 | .last() 107 | .and_then(|curr| HIGHLIGHT_INDEX_TO_LSP_INDEX.get(curr)) 108 | .and_then(|type_index| { 109 | // Prevents tokens from starting with new lines or other white space. 110 | // New lines at the start of tokens may break the `make_semantic_token` function. 111 | while start < end && char::from(doc.text.byte(start)).is_whitespace() { 112 | start += 1; 113 | } 114 | 115 | // Translates the token ranges into the expected struct from LSP. 116 | make_semantic_token( 117 | &doc.text, 118 | start..end, 119 | *type_index as u32, 120 | &mut pre_line, 121 | &mut pre_start, 122 | ) 123 | }); 124 | 125 | if let Some(token) = token { 126 | tokens.push(token); 127 | } 128 | } 129 | Err(_) => { /* log error? */ } 130 | } 131 | } 132 | 133 | tokens 134 | } 135 | 136 | /// Generates a specific semantic token within the guidelines of the LSP. 137 | fn make_semantic_token( 138 | code: &Rope, 139 | range: std::ops::Range, 140 | token_type: u32, 141 | pre_line: &mut u32, 142 | pre_start: &mut u32, 143 | ) -> Option { 144 | let line = code.try_byte_to_line(range.start).ok()? as u32; 145 | let first = code.try_line_to_char(line as usize).ok()? as u32; 146 | let start = (code.try_byte_to_char(range.start).ok()? as u32).checked_sub(first)?; 147 | 148 | let delta_line = line.checked_sub(*pre_line)?; 149 | let delta_start = if delta_line == 0 { 150 | start.checked_sub(*pre_start)? 151 | } else { 152 | start 153 | }; 154 | 155 | *pre_line = line; 156 | *pre_start = start; 157 | 158 | Some(SemanticToken { 159 | delta_line, 160 | delta_start, 161 | // Multi-byte chars like `λ` need to be treated as a single char 162 | length: code.byte_slice(range).chars().count() as u32, 163 | token_type, 164 | token_modifiers_bitset: 0, 165 | }) 166 | } 167 | 168 | /// Debugging test - tests steps from the semantic token generation algorithm. 169 | #[test] 170 | fn token_capture_test() { 171 | let code: Rope = r#" 172 | def main(): 173 | return "Hi!" 174 | "# 175 | .into(); 176 | let mut highlighter = tree_sitter_highlight::Highlighter::new(); 177 | let config = &HIGHLIGHTER_CONFIG; 178 | 179 | // TODO: use TextProviderRope when the highlighting crate allows it 180 | let text = code.to_string(); 181 | let highlights = highlighter 182 | .highlight(&config, text.as_bytes(), None, |_| None) 183 | .unwrap(); 184 | 185 | let mut stack = vec![]; 186 | for event in highlights { 187 | match event.unwrap() { 188 | HighlightEvent::HighlightStart(k) => { 189 | let name = HIGHLIGHT_NAMES[k.0]; 190 | stack.push(name); 191 | println!("> start {}", name); 192 | } 193 | HighlightEvent::Source { start, end } => { 194 | println!("> {start}-{end}: {:?}", &text[start..end]) 195 | } 196 | HighlightEvent::HighlightEnd => { 197 | println!("> end {}", stack.pop().unwrap()); 198 | } 199 | } 200 | } 201 | println!(); 202 | 203 | let highlights = highlighter 204 | .highlight(&config, text.as_bytes(), None, |_| None) 205 | .unwrap(); 206 | 207 | let mut tokens = vec![]; 208 | let mut stack = vec![]; 209 | let mut pre_line = 0; 210 | let mut pre_start = 0; 211 | for event in highlights { 212 | match event { 213 | // if the highlight is nested, only save inner range 214 | Result::Ok(HighlightEvent::HighlightStart(h)) => stack.push(h.0), 215 | Result::Ok(HighlightEvent::HighlightEnd) => drop(stack.pop()), 216 | Result::Ok(HighlightEvent::Source { mut start, end }) => { 217 | stack 218 | .last() 219 | .and_then(|curr| HIGHLIGHT_INDEX_TO_LSP_INDEX.get(curr)) 220 | .and_then(|type_index| { 221 | while start < end && char::from(code.byte(start)).is_whitespace() { 222 | start += 1; 223 | } 224 | 225 | println!( 226 | "{}-{} {:?}: {}", 227 | start, 228 | end, 229 | &text[start..end], 230 | LEGEND_TOKEN_TYPE[*type_index as usize].as_str() 231 | ); 232 | make_semantic_token( 233 | &code, 234 | start..end, 235 | *type_index as u32, 236 | &mut pre_line, 237 | &mut pre_start, 238 | ) 239 | }) 240 | .map(|token| tokens.push(token)); 241 | } 242 | Err(_) => { /* log error? */ } 243 | } 244 | } 245 | println!(); 246 | 247 | println!("> got {} tokens", tokens.len()); 248 | for token in tokens { 249 | println!("{:?}", token); 250 | } 251 | } 252 | -------------------------------------------------------------------------------- /src/language/mod.rs: -------------------------------------------------------------------------------- 1 | //! Language module. 2 | //! 3 | //! Deals with processing directly related to the Bend language. 4 | //! Right now it only returns the parser from tree sitter, but in the future we 5 | //! might do additional processing from this module. 6 | 7 | use tree_sitter::{Language, LanguageError, Parser}; 8 | 9 | /// Tree sitter representation for the Bend language. 10 | pub fn bend() -> Language { 11 | tree_sitter_bend::language() 12 | } 13 | /// Returns a new tree sitter parser for Bend. 14 | pub fn bend_parser() -> Result { 15 | let mut parser = Parser::new(); 16 | parser.set_language(&bend())?; 17 | Ok(parser) 18 | } 19 | -------------------------------------------------------------------------------- /src/lib.rs: -------------------------------------------------------------------------------- 1 | pub mod core; 2 | pub mod language; 3 | pub mod server; 4 | pub(crate) mod utils; 5 | -------------------------------------------------------------------------------- /src/server/mod.rs: -------------------------------------------------------------------------------- 1 | use dashmap::DashMap; 2 | use tower_lsp::jsonrpc::Result; 3 | use tower_lsp::lsp_types::{self as lsp, SemanticTokensRangeResult}; 4 | use tower_lsp::{Client, LanguageServer}; 5 | 6 | use crate::core::diagnostics; 7 | use crate::core::document::{self, Document}; 8 | use crate::core::semantic_token; 9 | use crate::utils::lsp_log; 10 | 11 | pub struct Backend { 12 | /// Connection to the client, used to send data 13 | pub client: Client, 14 | /// Currently open documents 15 | pub open_docs: DashMap, 16 | } 17 | 18 | #[tower_lsp::async_trait] 19 | impl LanguageServer for Backend { 20 | // All of these represent messages the server may receive from the client. 21 | // See the automatic documentation generated by `tower_lsp` to understand what each method does. 22 | 23 | async fn initialize(&self, _: lsp::InitializeParams) -> Result { 24 | let capabilities = Self::capabilities(); 25 | 26 | Ok(lsp::InitializeResult { 27 | server_info: Some(lsp::ServerInfo { 28 | name: "Bend Language Server".into(), 29 | version: Some(env!("CARGO_PKG_VERSION").into()), 30 | }), 31 | offset_encoding: None, 32 | capabilities, 33 | }) 34 | } 35 | 36 | async fn initialized(&self, _: lsp::InitializedParams) { 37 | let values = self 38 | .client 39 | .configuration(vec![lsp::ConfigurationItem { 40 | scope_uri: Some(lsp::Url::parse("file:///libraryPaths").unwrap()), 41 | section: Some("bend-language-server".to_string()), 42 | }]) 43 | .await; 44 | 45 | if let Ok(_val) = values { 46 | // TODO: configuration 47 | } 48 | 49 | self.publish_all_diagnostics().await; 50 | 51 | lsp_log::info!(self.client, "bend-language-server initialized"); 52 | } 53 | 54 | async fn shutdown(&self) -> Result<()> { 55 | Ok(()) 56 | } 57 | 58 | async fn did_open(&self, params: lsp::DidOpenTextDocumentParams) { 59 | // This is called when the client opens a new document. 60 | // We get the entire text of the document; let's store it. 61 | lsp_log::info!(self.client, "opening file at {}", params.text_document.uri); 62 | 63 | self.open_doc(params.text_document.uri.clone(), params.text_document.text); 64 | self.publish_diagnostics(¶ms.text_document.uri).await; 65 | } 66 | 67 | async fn did_change_configuration(&self, _params: lsp::DidChangeConfigurationParams) { 68 | lsp_log::info!(self.client, "changing language server configurations"); 69 | 70 | // TODO: configuration 71 | 72 | self.publish_all_diagnostics().await; 73 | } 74 | 75 | async fn did_change(&self, params: lsp::DidChangeTextDocumentParams) { 76 | lsp_log::log!( 77 | self.client, 78 | "getting new text from {}", 79 | params.text_document.uri 80 | ); 81 | 82 | self.update_document(¶ms.text_document.uri, |doc| { 83 | for event in ¶ms.content_changes { 84 | doc.update_whole_text(&event.text); 85 | } 86 | }); 87 | } 88 | 89 | async fn did_save(&self, params: lsp::DidSaveTextDocumentParams) { 90 | // Called when document is saved. 91 | // Update diagnostics (when we have them!) 92 | lsp_log::log!( 93 | self.client, 94 | "document saved at {}", 95 | params.text_document.uri 96 | ); 97 | 98 | let url = ¶ms.text_document.uri; 99 | self.publish_diagnostics(url).await; 100 | } 101 | 102 | async fn semantic_tokens_full( 103 | &self, 104 | params: lsp::SemanticTokensParams, 105 | ) -> Result> { 106 | lsp_log::info!(self.client, "generating full semantic tokens"); 107 | 108 | let uri = params.text_document.uri; 109 | let semantic_tokens = 110 | self.read_document_mut(&uri, |doc| Some(semantic_token::semantic_tokens(doc, None))); 111 | 112 | let token_amount = semantic_tokens.as_ref().map(|ts| ts.len()).unwrap_or(0); 113 | lsp_log::info!(self.client, "got {} tokens", token_amount); 114 | 115 | Ok(semantic_tokens.map(|tokens| { 116 | lsp::SemanticTokensResult::Tokens(lsp::SemanticTokens { 117 | result_id: None, 118 | data: tokens, 119 | }) 120 | })) 121 | } 122 | 123 | async fn semantic_tokens_range( 124 | &self, 125 | params: lsp::SemanticTokensRangeParams, 126 | ) -> Result> { 127 | let range = params.range; 128 | lsp_log::info!( 129 | self.client, 130 | "generating range {}:{}-{}:{} semantic tokens", 131 | range.start.line, 132 | range.start.character, 133 | range.end.line, 134 | range.end.character 135 | ); 136 | 137 | let uri = params.text_document.uri; 138 | let semantic_tokens = self.read_document_mut(&uri, |doc| { 139 | Some(semantic_token::semantic_tokens(doc, Some(range))) 140 | }); 141 | 142 | let token_amount = semantic_tokens.as_ref().map(|ts| ts.len()).unwrap_or(0); 143 | lsp_log::info!(self.client, "got {} tokens", token_amount); 144 | lsp_log::debug!(self.client, "tokens: {:?}", semantic_tokens); 145 | 146 | Ok(semantic_tokens.map(|tokens| { 147 | lsp::SemanticTokensRangeResult::Tokens(lsp::SemanticTokens { 148 | result_id: None, 149 | data: tokens, 150 | }) 151 | })) 152 | } 153 | 154 | async fn completion( 155 | &self, 156 | _: lsp::CompletionParams, 157 | ) -> Result> { 158 | Ok(Some(lsp::CompletionResponse::Array(vec![ 159 | lsp::CompletionItem::new_simple("Hello".to_string(), "Some detail".to_string()), 160 | lsp::CompletionItem::new_simple("Bye/Bye".to_string(), "More detail".to_string()), 161 | ]))) 162 | } 163 | 164 | async fn hover(&self, _: lsp::HoverParams) -> Result> { 165 | Ok(Some(lsp::Hover { 166 | contents: lsp::HoverContents::Scalar(lsp::MarkedString::String( 167 | "You're hovering!".to_string(), 168 | )), 169 | range: None, 170 | })) 171 | } 172 | } 173 | 174 | impl Backend { 175 | pub fn new(client: Client) -> Self { 176 | Self { 177 | client, 178 | open_docs: DashMap::new(), 179 | } 180 | } 181 | 182 | fn capabilities() -> lsp::ServerCapabilities { 183 | lsp::ServerCapabilities { 184 | text_document_sync: Some(lsp::TextDocumentSyncCapability::Options( 185 | lsp::TextDocumentSyncOptions { 186 | open_close: Some(true), 187 | change: Some(lsp::TextDocumentSyncKind::FULL), 188 | will_save: None, 189 | will_save_wait_until: None, 190 | save: Some(lsp::TextDocumentSyncSaveOptions::Supported(true)), 191 | }, 192 | )), 193 | semantic_tokens_provider: Some( 194 | lsp::SemanticTokensServerCapabilities::SemanticTokensRegistrationOptions( 195 | lsp::SemanticTokensRegistrationOptions { 196 | text_document_registration_options: { 197 | lsp::TextDocumentRegistrationOptions { 198 | document_selector: Some(vec![lsp::DocumentFilter { 199 | language: Some("bend".into()), 200 | scheme: Some("file".into()), 201 | pattern: None, 202 | }]), 203 | } 204 | }, 205 | semantic_tokens_options: lsp::SemanticTokensOptions { 206 | work_done_progress_options: lsp::WorkDoneProgressOptions::default(), 207 | legend: lsp::SemanticTokensLegend { 208 | token_types: semantic_token::LEGEND_TOKEN_TYPE.to_vec(), 209 | token_modifiers: vec![], 210 | }, 211 | range: Some(true), 212 | full: Some(lsp::SemanticTokensFullOptions::Bool(true)), 213 | }, 214 | static_registration_options: lsp::StaticRegistrationOptions::default(), 215 | }, 216 | ), 217 | ), 218 | // definition_provider: Some(lsp::OneOf::Left(true)), 219 | // completion_provider: Some(lsp::CompletionOptions { 220 | // resolve_provider: Some(false), 221 | // trigger_characters: Some(vec!["/".into()]), 222 | // all_commit_characters: None, 223 | // work_done_progress_options: Default::default(), 224 | // completion_item: None, 225 | // }), 226 | // hover_provider: Some(lsp::HoverProviderCapability::Simple(false)), 227 | ..Default::default() 228 | } 229 | } 230 | 231 | /// Publish diagnostics for every open file. 232 | async fn publish_all_diagnostics(&self) { 233 | for refer in self.open_docs.iter() { 234 | self.publish_diagnostics(refer.key()).await; 235 | } 236 | } 237 | 238 | /// Publish diagnostics for document `url`. 239 | async fn publish_diagnostics(&self, url: &lsp::Url) { 240 | let diags = self 241 | .read_document(url, |doc| { 242 | Some(diagnostics::lsp_diagnostics(doc, &diagnostics::check(doc))) 243 | }) 244 | .unwrap_or_default(); 245 | 246 | lsp_log::info!(self.client, "got diagnostics: {:?}", diags); 247 | 248 | self.client 249 | .publish_diagnostics(url.clone(), diags, None) 250 | .await; 251 | } 252 | 253 | /// Update the document at `url` using function `updater`. 254 | fn update_document(&self, url: &lsp::Url, mut updater: F) 255 | where 256 | F: FnMut(&mut Document), 257 | { 258 | if let Some(mut doc) = self.open_docs.get_mut(url) { 259 | updater(doc.value_mut()); 260 | } 261 | } 262 | 263 | /// Read the contents of `url` using function `reader`. 264 | fn read_document(&self, url: &lsp::Url, reader: F) -> Option 265 | where 266 | F: Fn(&document::Document) -> Option, 267 | { 268 | self.open_docs 269 | .get(url) 270 | .and_then(|refer| reader(refer.value())) 271 | } 272 | 273 | /// Read the contents of `url` using function `reader`, possibly changing the document. 274 | fn read_document_mut(&self, url: &lsp::Url, mut updater: F) -> Option 275 | where 276 | F: FnMut(&mut Document) -> Option, 277 | { 278 | self.open_docs 279 | .get_mut(url) 280 | .and_then(|mut refer| updater(refer.value_mut())) 281 | } 282 | 283 | /// Open a new document at `url` with its contents as a parameter. 284 | fn open_doc(&self, url: lsp::Url, text: String) { 285 | self.open_docs 286 | .insert(url.clone(), Document::new_with_text(url, &text)); 287 | } 288 | 289 | // Open a new document at `url` with its contents from the file system. 290 | // fn open_doc_from_path(&self, url: lsp::Url) { 291 | // if let Ok(text) = fs::read_to_string(url.to_file_path().unwrap()) { 292 | // self.open_doc(url, text); 293 | // } 294 | // } 295 | } 296 | -------------------------------------------------------------------------------- /src/utils/color_wrapper.rs: -------------------------------------------------------------------------------- 1 | // Parts of this code are based on https://github.com/Aloso/to-html/blob/main/LICENSE, 2 | // which is MIT-licensed. 3 | 4 | use lazy_static::lazy_static; 5 | use regex::Regex; 6 | 7 | lazy_static! { 8 | pub static ref ANSI_REGEX: Regex = 9 | Regex::new(r"\u{1b}(\[[0-9;?]*[A-HJKSTfhilmnsu]|\(B)").unwrap(); 10 | } 11 | 12 | /// This function receives a string with color and highlighting information 13 | /// in ANSI color code format and treats them to be reported by the language server. 14 | /// 15 | /// As tracked in issue #1, diagnostic highlighting still does not implement color 16 | /// information in VSCode, so for now we just remove color codes. 17 | pub fn treat_colors(text: &str) -> String { 18 | ANSI_REGEX.replace_all(text, "").to_string() 19 | } 20 | -------------------------------------------------------------------------------- /src/utils/lsp_log.rs: -------------------------------------------------------------------------------- 1 | //! Logging module. 2 | //! 3 | //! Contains macros to easily send logging information to the client from the language server. 4 | 5 | #![allow(unused_macros)] 6 | #![allow(unused_imports)] 7 | 8 | macro_rules! error { 9 | ($client:expr, $($arg:tt)+) => { 10 | $client.log_message(tower_lsp::lsp_types::MessageType::ERROR, format!($($arg)+)).await; 11 | }; 12 | } 13 | pub(crate) use error; 14 | 15 | macro_rules! warning { 16 | ($client:expr, $($arg:tt)+) => { 17 | $client.log_message(tower_lsp::lsp_types::MessageType::WARNING, format!($($arg)+)).await; 18 | }; 19 | } 20 | pub(crate) use warning; 21 | 22 | macro_rules! info { 23 | ($client:expr, $($arg:tt)+) => { 24 | $client.log_message(tower_lsp::lsp_types::MessageType::INFO, format!($($arg)+)).await; 25 | }; 26 | } 27 | pub(crate) use info; 28 | 29 | macro_rules! log { 30 | ($client:expr, $($arg:tt)+) => { 31 | $client.log_message(tower_lsp::lsp_types::MessageType::LOG, format!($($arg)+)).await; 32 | }; 33 | } 34 | pub(crate) use log; 35 | 36 | macro_rules! debug { 37 | ($client:expr, $($arg:tt)+) => { 38 | #[cfg(debug_assertions)] 39 | $client.log_message(tower_lsp::lsp_types::MessageType::INFO, format!($($arg)+)).await; 40 | }; 41 | } 42 | pub(crate) use debug; 43 | -------------------------------------------------------------------------------- /src/utils/mod.rs: -------------------------------------------------------------------------------- 1 | pub(crate) mod color_wrapper; 2 | pub(crate) mod lsp_log; 3 | pub(crate) mod rope; 4 | -------------------------------------------------------------------------------- /src/utils/rope.rs: -------------------------------------------------------------------------------- 1 | use ropey::Rope; 2 | use tree_sitter as ts; 3 | pub use ts::TextProvider; 4 | 5 | pub struct TextProviderRope<'a>(pub &'a Rope); 6 | 7 | impl<'a> TextProvider<&'a [u8]> for &'a TextProviderRope<'a> { 8 | type I = ChunksBytes<'a>; 9 | fn text(&mut self, node: tree_sitter::Node) -> Self::I { 10 | ChunksBytes(self.0.byte_slice(node.byte_range()).chunks()) 11 | } 12 | } 13 | 14 | pub struct ChunksBytes<'a>(pub ropey::iter::Chunks<'a>); 15 | 16 | impl<'a> Iterator for ChunksBytes<'a> { 17 | type Item = &'a [u8]; 18 | 19 | fn next(&mut self) -> Option { 20 | self.0.next().map(|s| s.as_bytes()) 21 | } 22 | } 23 | --------------------------------------------------------------------------------