VSCodeでもmagrittrパイプをいい感じに入力するためにVSCode拡張機能の作成にチャレンジしてみる

library(tidyverse)

starwars %>%
    filter(height > 100) %>%
    group_by(species) %>%
    summarise(mass_mean = mean(mass))

[
    {
        "key": "Ctrl+Shift+m",
        "command": "type",
        "args": {
            "text": " %>% "
        },
        "when": "editorTextFocus && editorLangId == r"
    },
    {
        "key": "Alt+-",
        "command": "type",
        "args": {
            "text": " <- "
        },
        "when": "editorTextFocus && editorLangId == r"
    },

]

# いつかにインストールしたnvmを使ってnpmバージョンを変える
nvm use v18.1.0

yarn install -g yo generator-code
yo code

# ? What type of extension do you want to create? New Extension (TypeScript)
# ? What's the name of your extension? convertRCode
### Press <Enter> to choose default for all options below ###

# ? What's the identifier of your extension? convertRCode
# ? What's the description of your extension? VSCode R utils
# ? Initialize a git repository? Yes
# ? Bundle the source code with webpack? No
# ? Which package manager to use? yarn

# ? Do you want to open the new folder with Visual Studio Code? Open with `code`

export function activate(context: vscode.ExtensionContext) {
	
    let _ = vscode.commands.registerCommand('transformrcode.addmagrittrpipe', function() {
        
        const editor = vscode.window.activeTextEditor;
        
        if (editor) {
            // 現在の行rangeを取得
            let currentline = editor.document.lineAt(editor.selection.active.line).range;
            // 現在の行のstringsを取得
            let currentstring = editor.document.lineAt(editor.selection.active.line).text;
            
            if (currentstring.endsWith(" ")) {
                let result = currentstring+"%>%";
                editor.edit(edit => edit.replace(currentline, result))
                .then(success => {
                    var position = editor.selection.end;
                    editor.selection = new vscode.Selection(position, position);
                });
            } else {
                let result = currentstring+" %>%";
                editor.edit(edit => edit.replace(currentline, result))
                .then(success => {
                    var position = editor.selection.end;
                    editor.selection = new vscode.Selection(position, position);
                });
            }
        }
    });
}

	"activatVonEvents": [
        "onCommand:transformrcode.addmagrittrpipe"
	],
	"contributes": {
		"commands": [
            {
                "command": "transformrcode.addmagrittrpipe",
                "title": "add magrittr pipe"
            }
		]
	},

yarn install -g vsce
yarn vsce package

    {
        "key": "ctrl+shift+m",
        "command": "transformrcode.addnativepipe",
        "when": "editorTextFocus"
    },

export function activate(context: vscode.ExtensionContext) {
	
    let __ = vscode.commands.registerCommand('transformrcode.addnativepipe', function() {
        
        const editor = vscode.window.activeTextEditor;
        
        if (editor) {
            // 現在の行rangeを取得
            let currentline = editor.document.lineAt(editor.selection.active.line).range;
            // 現在の行のstringsを取得
            let currentstring = editor.document.lineAt(editor.selection.active.line).text;
            
            if (currentstring.endsWith(" ")) {
                let result = currentstring+"|>";
                editor.edit(edit => edit.replace(currentline, result))
                .then(success => {
                    var position = editor.selection.end;
                    editor.selection = new vscode.Selection(position, position);
                });
            } else {
                let result = currentstring+" |>";
                editor.edit(edit => edit.replace(currentline, result))
                .then(success => {
                    var position = editor.selection.end;
                    editor.selection = new vscode.Selection(position, position);
                });
            }
        }
    });
}