Vscode ~ Extension to change coding style

Editors and IDEs
#1

Hi. I am looking for an extension (or a way) on Visual Studio Code that allows me to format code in a specific way.

For example typically people like to code in this style:

fn main() {
// Do stuff
}

However I prefer to code like this:

fn main()
{
// Do stuff
}

I would also like to add extra rules such as spacing.

For example if I am creating a structure:

struct Color
{
	red: u32,
	orange: u32,
}

I would like to create a rule or something that would format it like this:

struct Color
{
	red:        u32,
	orange:     u32,
}

notice how it is spaced out more nicely and evenly. I want something to automate it where it is all evened out.

Does anyone know of such extension(s)?

#2

If you use rustfmt to format your code, you can use these unstable options in rustfmt.toml to customize the behavior:

1 Like
#3

If you use the rust-analyzer extension (which is the recommended extension for Rust nowadays), it will also run rustfmt on save. rustfmt will in turn use its configuration file.

#4

To be honest with you I don't really like this extension because it shows these things:

image

Unless if I can disable these things from showing up, I would rather use an alternative to only format my code :slight_smile: Would you know how to disable those things from showing up?

As @mbrubeck was stating I could use rustfmt.

image

I believe the first option is the correct one to install, am I correct?

#5

Set "rust-analyzer.inlayHints.typeHints": false in your settings.json.

1 Like
#6

Ok thanks that works

Now I wanted to know with rust-analyzer specifically, how would I change how text is formated (e.g. braces formatting) because before I believe you were mentioning it for a different extension so I wanted to know for this specific extention the rust-analyzer how would I change it?

#7

The rust-analyzer extension uses rustfmt to format your code by default, if you have "editor.formatOnSave" enabled.

#9

I need to target a file called rustfmt. So I am looking for the global configeration. I believe it is stored in %userprofile\AppData but where do I go next to get to the global verison of rustfmt ?

#10

You'll need to create a folder called rustfmt inside the AppData\Roaming folder, and then create a file called rustfmt.toml inside of that.

So the whole path will be: %userprofile%\AppData\Roaming\rustfmt\rustfmt.toml

1 Like
#11

Hey man I am getting a little bit of a problem over here

I did store it in %userprofile%\AppData\Roaming\rustfmt\rustfmt.toml as you said, in that file I have only one line:

brace_style = "AlwaysNextLine"

I purposely wrote my code like this:

fn main() {
    let x = 10;
}

and when I go to right click and click on "Format Document" it does nothing.

image
image699×685 31.1 KB
.

if I did write my code like this however:

fn main() {
}

and I again do "format document", it does change my code to this:

fn main() {}

so yeah I am not too sure what is going on.

#12 
Warning: can't set `brace_style = AlwaysNextLine`, unstable features are only available in nightly channel.
Warning: can't set `unstable_features = true`, unstable features are only available in nightly channel.

it turns out I need to enable cargo nightly I will give that a shot

#13

Ok so cargo nightly has solved the problem thanks :slight_smile:

Now my next concern is that in regards to brace_style it works but it doesn't work for if statements. If anything, it forces it to use the typical egyptian style coding.

e.g.

fn main()
{
    let mut x = 10;
    if x == 10 {
        x += 20;
    }
}

I am not too sure which specific setting to change.

And in regards to struct_field_align_threshold, while it also works, the problem is that it is only limited to the amount of characters, so for instance if I exceed 20 then it will not format it e.g.

struct Color
{
    red: u32,
    blue: u32,
    greenasds: u32,
    asddddddddddssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssdd: i32,
}

I want it to be infinity instead of having some form of limit and on top of that I want it to add even more spaces after the variable and to add a colon not at the variable but just before the type of variable.

e.g.

struct Color
{
    red             : u32,
    blue            : u32,
    greenasds       : u32,
}

Would you happen to know how I would format it like this?