swayfmt 0.31.0

Sway language formatter.
Documentation 
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use forc_tracing::{println_green, println_red};
use paste::paste;
use prettydiff::{basic::DiffOp, diff_lines};

macro_rules! fmt_test {
    ($scope:ident $desired_output:expr, $($name:ident $y:expr),+) => {
        fmt_test_inner!($scope $desired_output,
                                $($name $y)+
                                ,
                                remove_trailing_whitespace format!("{} \n\n\t ", $desired_output).as_str(),
                                remove_beginning_whitespace format!("  \n\t{}", $desired_output).as_str(),
                                identity $desired_output, /* test return is valid */
                                remove_beginning_and_trailing_whitespace format!("  \n\t  {} \n\t   ", $desired_output).as_str()
                       );
    };
}

macro_rules! fmt_test_inner {
    ($scope:ident $desired_output:expr, $($name:ident $y:expr),+) => {
        $(
        paste! {
            #[test]
            fn [<$scope _ $name>] () {
                let formatted_code = crate::parse::parse_format::<sway_ast::ItemStruct>($y);
                let changeset = diff_lines(&formatted_code, $desired_output);
                let diff = changeset.diff();
                let count_of_updates = diff.len();
                if count_of_updates != 0 {
                    println!("FAILED: {count_of_updates} diff items.");
                }
                for diff in diff {
                    match diff {
                        DiffOp::Equal(old) => {
                            for o in old {
                                println!("{}", o)
                            }
                        }
                        DiffOp::Insert(new) => {
                            for n in new {
                                println_green(&format!("+{}", n));
                            }
                        }
                        DiffOp::Remove(old) => {
                            for o in old {
                                println_red(&format!("-{}", o));
                            }
                        }
                        DiffOp::Replace(old, new) => {
                            for o in old {
                                println_red(&format!("-{}", o));
                            }
                            for n in new {
                                println_green(&format!("+{}", n));
                            }
                        }
                    }
                }
                assert_eq!(&formatted_code, $desired_output)
            }
        }
    )+
}
}

fmt_test!(  annotated_struct
"struct Annotated {
    #[storage(write)]
    foo: u32,
    #[storage(read)]
    bar: String,
}",
            intermediate_whitespace
"struct Annotated{
                #[   storage(write  )]\n
                foo    : u32,
                #[   storage(read  )   ]
                bar   : String,
            }"
);