vscode-json-languageserver support

[daliusd]

VSCode JSON languageserver has schema support for linting and
completions.

I have enabled snippets support (snippetSupport) even if it is not
fully supported. label that comes with completions response can be
used as well.

[daliusd]

Please do not merge yet. I want to investigate some alternatives.

[daliusd]

Now everything is good.

[daliusd]

@hsanson it is not WIP anymore 😄 Unless you have some ideas what can be improved.

[daliusd]

Some examples how it looks like in action:

Schema json person.json:

{
  "$id": "https://example.com/person.schema.json",
  "title": "Person",
  "type": "object",
  "properties": {
    "firstName": {
      "type": "string",
      "description": "The person's first name."
    },
    "lastName": {
      "type": "string",
      "description": "The person's last name."
    },
    "age": {
      "description": "Age in years which must be equal to or greater than zero.",
      "type": "integer",
      "minimum": 0
    }
  }
}

Sample test file:

{
  "$schema": "./person.json",
  "firstName": "John",
  "lastName": "Doe",
  "age": 2
}

[hsanson]

Unfortunatelly I think this needs more evaluation. I did some tests and when this is enabled ALEImport breaks for me.
If enablinb snippetSupport is not critical for vscodejson I would recommend reverting this to get vscodejson merged and then handle adding snippetSupport on a separate issue.

[daliusd]

Absolutely not critical. Let me fix it.

[daliusd]

Fixed.

[daliusd]

@hsanson BTW, how ALEImport breaks for you? What filetype you were workin on? I want to reproduce the problem and see if there is a fix.

[hsanson]

Simple Java HelloWorld.java managed via Gradle and using eclipselsp:

public class HelloWorld {
    public static void main(String[] argv) {
        LocalDate today = LocalDate.now();
        System.out.println("Hello gradle world at " + today);
    }
}

1. Put the cursos in LocalDate class and invoke :ALEImport.
2. ALE should add the import statement "import java.time.LocalDate" at the beginning of the file.
3. With the snippetSupport enabled this does not work.

[hsanson]

Thanks, looks good.