如何在vscode扩展中获取对象？

Question

When developing a new extension for Visual Studio Code, how can I get the current class where my cursor is pointed to?

For example:

export class MyClassA {

  parameter1: number = 5;

  myFunc() {
    return parameter1 * 2;
  }

}

export class MyClassB {
   anotherParamenter = null;
}

If my cursor is located inside the myFunc scope and I call registerHoverProvider or whatever, I want to know that I'm inside the class MyClassA .

Is it possible to retrieve the object or only the cursor position?

Answer 1

The context of text in a code editor is highly dependent of what language the code is in. You need a parser for the language to determine the syntactic and semantic details of the written code.

Hence, the first thing you have to do therefor is to implement a parser or use a parsing service provided by other tools. Once this is in place you can query that to find the syntactic context (eg myFunc in MyClassA in module foo ) and then act on that to generate informations for your hover provider.