VSCode Selection to snippet - visual-studio-code

Question

It's a beginner question so don't be to hard to me.
Example:
A,B,C,D, ..
I need to convert this string to the following output in VSCode
enum id name
{
value(0; A) { Caption = 'A'; }
value(1; B) { Caption = 'B'; }
value(2; C) { Caption = 'C'; }
value(3; D) { Caption = 'D'; }
}
I can read the selection and split it into separate tokens.
But I'm stuck when it comes to writing it back to my line.
My Code:
'use strict';
// The module 'vscode' contains the VS Code extensibility API
// Import the module and reference it with the alias vscode in your code below
//import * as vscode from 'vscode';
import { window, commands, Disposable, ExtensionContext, StatusBarAlignment, StatusBarItem, TextDocument, TextEditor, ViewColumn, workspace, TextLine, TextEdit, Uri, Position } from 'vscode';
import { stringify } from 'querystring';
// this method is called when your extension is activated
// your extension is activated the very first time the command is executed
export function activate(context: ExtensionContext) {
console.log('"Cg Helper" is now active!');
let cgHelper = new CgALHelper;
let disp = commands.registerCommand('extension.convertSelection2Enum', () =>{
cgHelper.convertSelection2Enum(window.activeTextEditor);
})
context.subscriptions.push(disp);
}
// this method is called when your extension is deactivated
export function deactivate() {
}
class CgALHelper
{
public convertSelection2Enum(editor: TextEditor)
{
this.convertTextLine2Enum(editor);
}
public convertInputText2Enum()
{
}
private convertTextLine2Enum(editor: TextEditor)
{
let line = editor.document.lineAt(editor.selection.active.line);
if (line != null && line.text != null)
{
window.showInformationMessage(line.text);
let tokens = line.text.split(',');
if (tokens[0] != null && tokens[0] != '' && tokens.length != 0 )
{
tokens.forEach(tok => {
// I'm stuck here !
});
} else
window.showErrorMessage('nothing to convert');
} else
window.showErrorMessage('Nothing to convert');
}
}

Answer 1

You want to construct a SnippetString. Snippet strings can be constructed incrementally:
const snippet = new vscode.SnippetString();
snippet.appendText('enum id name {');
tokens.forEach(tok => {
snippet.appendText(` value(0; ${tok}) { Caption = '${tok}'; }`)
});
snippet.appendText('}');
Then apply the snippet to the editor using TextEditor.insertSnippet:
editor.insertSnippet(snippet);