# Code

Learn how Vale handles source code.

Vale supports linting source code comments in a number of languages (see below).

| Language   | Extensions                           | Scopes                                                                                                                                                                                                                                       |
| ---------- | ------------------------------------ | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| C          | `.c`, `.h`                           | <p><code>//</code> (<code>text.comment.line.ext</code>),<br><code>/*...*/</code> (<code>text.comment.line.ext</code>),<br><code>/\*</code> (<code>text.comment.block.ext</code>)</p>                                                         |
| C#         | `.cs`, `.csx`                        | <p><code>//</code> (<code>text.comment.line.ext</code>),<br><code>/*...*/</code> (<code>text.comment.line.ext</code>),<br><code>/\*</code> (<code>text.comment.block.ext</code>)</p>                                                         |
| C++        | `.cpp`, `.cc`, `.cxx`, `.hpp`        | <p><code>//</code> (<code>text.comment.line.ext</code>),<br><code>/*...*/</code> (<code>text.comment.line.ext</code>),<br><code>/\*</code> (<code>text.comment.block.ext</code>)</p>                                                         |
| CSS        | `.css`                               | <p><code>/*...*/</code> (<code>text.comment.line.ext</code>),<br><code>/\*</code> (<code>text.comment.block.ext</code>)</p>                                                                                                                  |
| Go         | `.go`                                | <p><code>//</code> (<code>text.comment.line.ext</code>),<br><code>/*...*/</code> (<code>text.comment.line.ext</code>),<br><code>/\*</code> (<code>text.comment.block.ext</code>)</p>                                                         |
| Haskell    | `.hs`                                | <p><code>--</code> (<code>text.comment.line.ext</code>),<br><code>{-</code> (<code>text.comment.block.ext</code>)</p>                                                                                                                        |
| Java       | `.java`, `.bsh`                      | <p><code>//</code> (<code>text.comment.line.ext</code>),<br><code>/*...*/</code> (<code>text.comment.line.ext</code>),<br><code>/\*</code> (<code>text.comment.block.ext</code>)</p>                                                         |
| JavaScript | `.js`                                | <p><code>//</code> (<code>text.comment.line.ext</code>),<br><code>/*...*/</code> (<code>text.comment.line.ext</code>),<br><code>/\*</code> (<code>text.comment.block.ext</code>)</p>                                                         |
| Julia      | `.jl`                                | <p><code>#</code> (<code>text.comment.line.ext</code>),<br><code>"..."</code> (<code>text.comment.line.ext</code>)<br><code>#=</code> (<code>text.comment.block.ext</code>),<br><code>"""</code> (<code>text.comment.block.ext</code>)</p>   |
| LESS       | `.less`                              | <p><code>//</code> (<code>text.comment.line.ext</code>),<br><code>/*...*/</code> (<code>text.comment.line.ext</code>),<br><code>/\*</code> (<code>text.comment.block.ext</code>)</p>                                                         |
| Lua        | `.lua`                               | <p><code>--</code> (<code>text.comment.line.ext</code>),<br><code>--\[\[</code> (<code>text.comment.block.ext</code>)</p>                                                                                                                    |
| Perl       | `.pl`, `.pm`, `.pod`                 | `#` (`text.comment.line.ext`)                                                                                                                                                                                                                |
| PHP        | `.php`                               | <p><code>//</code> (<code>text.comment.line.ext</code>),<br><code>#</code> (<code>text.comment.line.ext</code>),<br><code>/*...*/</code> (<code>text.comment.line.ext</code>),<br><code>/\*</code> (<code>text.comment.block.ext</code>)</p> |
| PowerShell | `.ps1`                               | <p><code>#</code> (<code>text.comment.line.ext</code>),<br><code><#...#></code> (<code>text.comment.line.ext</code>),<br><code><#</code> (<code>text.comment.block.ext</code>)</p>                                                           |
| Protobuf   | `.proto`                             | <p><code>//</code> (<code>text.comment.line.ext</code>),<br><code>/*...*/</code> (<code>text.comment.line.ext</code>),<br><code>/\*</code> (<code>text.comment.block.ext</code>)</p>                                                         |
| Python     | `.py`, `.py3`, `.pyw`, `.pyi`, `rpy` | <p><code>#</code> (<code>text.comment.line.ext</code>),<br><code>"""</code> (<code>text.comment.block.ext</code>)</p>                                                                                                                        |
| R          | `.r`, `.R`                           | `#` (`text.comment.line.ext`)                                                                                                                                                                                                                |
| Ruby       | `.rb`                                | <p><code>#</code> (<code>text.comment.line.ext</code>),<br><code>^=begin</code> (<code>text.comment.block.ext</code>)</p>                                                                                                                    |
| Rust       | `.rs`                                | `//` (`text.comment.line.ext`)                                                                                                                                                                                                               |
| Sass       | `.sass`                              | <p><code>//</code> (<code>text.comment.line.ext</code>),<br><code>/*...*/</code> (<code>text.comment.line.ext</code>),<br><code>/\*</code> (<code>text.comment.block.ext</code>)</p>                                                         |
| Scala      | `.scala`, `.sbt`                     | `//` (`text.comment.line.ext`)                                                                                                                                                                                                               |
| Swift      | `.swift`                             | <p><code>//</code> (<code>text.comment.line.ext</code>),<br><code>/*...*/</code> (<code>text.comment.line.ext</code>),<br><code>/\*</code> (<code>text.comment.block.ext</code>)</p>                                                         |
| TypeScript | `.ts`, `.tsx`                        | <p><code>//</code> (<code>text.comment.line.ext</code>),<br><code>/*...*/</code> (<code>text.comment.line.ext</code>),<br><code>/\*</code> (<code>text.comment.block.ext</code>)</p>                                                         |

## [Associations](#associations)

In many languages, it’s common for comments to contain *embedded markup* (e.g., Markdown, reStructuredText, etc.) within them. For example, consider the following Rust doc comment:

````rust
impl Person {
    /// Creates a person with the given name.
    ///
    /// # Examples
    ///
    /// ```
    /// // You can have rust code between fences
    /// // inside the comments If you pass --test
    /// // to `rustdoc`, it will even test it for
    /// // you!
    /// use doc::Person;
    /// let person = Person::new("name");
    /// ```
    pub fn new(name: &str) -> Person {
        Person {
            name: name.to_string(),
        }
    }
}
````

If the embedded markup is one of the supported formats, you can associate the `comment` scope with a `markup` type. This will allow you to lint the embedded markup as if it were a standalone file.

```ini
StylesPath = styles
MinAlertLevel = suggestion

[formats]
# Rust + Markdown
rs = md

[*.{rs,md}]
BasedOnStyles = Vale
```

Once a markup format has been assigned, you can make use of all the supported features of that format (such as ignore patterns and comment-based configuration) in your source code comments.

[DITA](/formats/dita.md) [LSP](/guides/lsp.md)


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.vale.sh/formats/code.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.