vscode extension插件开发详解

 {
/*
   // Place your snippets for C++ here. Each snippet is defined under a snippet name and has a prefix, body and 
   // description. The prefix is what is used to trigger the snippet and the body will be expanded and inserted. Possible variables are:
   // $1, $2 for tab stops, $0 for the final cursor position, and ${1:label}, ${2:another} for placeholders. Placeholders with the 
   // same ids are connected.
   // Example:
   "Print to console": {
    "prefix":"log", 
    "body":[
      "console.log('$1');", 
      "$2"
    ], 
    "description":"Log output to console"
  } 
*/
}

 "contributes": {
  "snippets": [
      {
        "language": "cpp",
        "path": "./snippets/snippets.json"
      }
    ],
 }

// 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: vscode.ExtensionContext) {
  
  // Use the console to output diagnostic information (console.log) and errors (console.error)
  // This line of code will only be executed once when your extension is activated
  console.log('Congratulations, your extension "demoCmd" is now active!');
  // The command has been defined in the package.json file
  // Now provide the implementation of the command with registerCommand
  // The commandId parameter must match the command field in package.json
  let demoCmd= vscode.commands.registerCommand('extension.demoCmd', () => {
    // The code you place here will be executed every time your command is executed
  });
  context.subscriptions.push(demoCmd);
}

// this method is called when your extension is deactivated
export function deactivate() {
  
}

     "commands": [{
      "command": "extension.demoCmd",
      "title": "demoCmd"
    }],

    "keybindings": [{
            "command": "extension.demoCmd",
            "key": "ctrl+shift+a",
            "mac": "ctrl+shift+a",
            "when": "editorTextFocus"
          }],

"menus": {
   "editor/context": [
    {
     "when": "resourceLangId == cpp",
     "command": "extension.demoCmd",
     "group": "navigation"
    }],
    "editor/title": [{
        "when": "resourceLangId == cpp",
        "command": "extension.demoCmd",
        "group": "navigation"
     }]

"configuration": {
      "type": "object",
      "title": "demoCmd configuration",
      "properties": {
        "demoCmd.encoding": {
          "type": "string",
          "default": "utf-8",
          "description": "default file encoding"
        }
      }
    },

// 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: vscode.ExtensionContext) {

   let demoProvider = new demoProvider();
   let cppPv = vscode.languages.registerCompletionItemProvider("cpp", demoProvider);  
   context.subscriptions.push(cppPv);
}
// this method is called when your extension is deactivated
export function deactivate() {

}

export class demoProvider implements vscode.CompletionItemProvider{
    public provideCompletionItems(document: vscode.TextDocument, position: vscode.Position, token: vscode.CancellationToken): vscode.CompletionItem[]{

      var completionItems = [];
      var completionItem = new vscode.CompletionItem("aaa");
      completionItem.kind = vscode.CompletionItemKind.Snippet;
      completionItem.detail = "aaa";
      completionItem.filterText = "bbbb";
      completionItem.insertText = new vscode.SnippetString("aaaa$1bbbb$2cccc");
      completionItems.push(completionItem);
      return completionItems;
    }
    public resolveCompletionItem(item: vscode.CompletionItem, token: vscode.CancellationToken): any{
      return item;
    }
    dispose(){

    }
  }

    private editSnippet(text : string ) {
      let editor = vscode.window.activeTextEditor;
      let selection : vscode.Selection = editor.selection;
      let insertPosition = new vscode.Position(selection.active.line, 0);
      editor.insertSnippet(new vscode.SnippetString(text), insertPosition);
    }

let out:vscode.OutputChannel = vscode.window.createOutputChannel("iAuto3 RunScript");
out.show();
out.appendLine("deom");

vsce package