rust/tests/source/expr.rs

// Test expressions

fn foo() -> bool {
    let boxed: Box<i32> = box   5;
    let referenced = &5 ;

    let very_long_variable_name = ( a +  first +   simple + test   );
    let very_long_variable_name = (a + first + simple + test + AAAAAAAAAAAAA + BBBBBBBBBBBBBBBBB + b + c);

    let is_internalxxxx = self.codemap.span_to_filename(s) == self.codemap.span_to_filename(m.inner);

    let some_val = aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa * bbbb / (bbbbbb -
        function_call(x, *very_long_pointer, y))
    + 1000  ;

some_ridiculously_loooooooooooooooooooooong_function(10000 * 30000000000 + 40000 / 1002200000000
                                                     - 50000 * sqrt(-1),
                                                     trivial_value);
    (((((((((aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa + a +
             aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa + aaaaa)))))))))   ;

    { for _ in 0..10 {} }

    {{{{}}}}

     if  1  + 2 > 0  { let result = 5; result } else { 4};

    if  let   Some(x)  =  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa {
        // Nothing
    }

    if  let   Some(x)  =  (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {}

    if let (some_very_large,
            tuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuple) = 1
        + 2 + 3 {
    }

    if let (some_very_large,
            tuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuple) = 1111 + 2222 {}

    if let (some_very_large, tuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuple) = 1
 + 2 + 3 {
    }

    let test = if true { 5 } else { 3 };

    if cond() {
        something();
    } else  if different_cond() {
        something_else();
    } else {
        // Check subformatting
        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
    }
}

fn bar() {
    let range = (   111111111 + 333333333333333333 + 1111 +   400000000000000000) .. (2222 +  2333333333333333);

    let another_range = 5..some_func( a , b /* comment */);

    for _  in  1 ..{ call_forever(); }

    syntactically_correct(loop { sup( '?'); }, if cond { 0 } else { 1 });

    let third = ..10;
    let infi_range = ..   ;
    let foo = 1..;
    let bar = 5 ;
    let nonsense = (10 .. 0)..(0..10);

    loop{if true {break}}

    let x = (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa &&
             aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,
             a);
}

fn baz() {
    unsafe    /*    {}{}{}{{{{}}   */   {
        let foo = 1u32;
    }

    unsafe /* very looooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooong comment */ {}

    unsafe // So this is a very long comment.
           // Multi-line, too.
           // Will it still format correctly?
    {
    }

    unsafe {
        // Regular unsafe block
    }

    unsafe {
        foo()
    }

    unsafe {
        foo();
    }
}

// Test some empty blocks.
fn qux() {
    {}
    // FIXME this one could be done better.
    { /* a block with a comment */ }
    {

    }
    {
        // A block with a comment.
    }
}

fn issue227() {
    {
        let handler = box DocumentProgressHandler::new(addr, DocumentProgressTask::DOMContentLoaded);
    }
}

fn issue184(source: &str) {
    for c in source.chars() {
        if index < 'a' {
            continue;
        }
    }
}

fn matches() {
    match 1 {
        1 => 1, // foo
        2 => 2,
        // bar
        3 => 3,
        _ => 0 // baz
    }
}

fn issue339() {
    match a {
        b => {}
        c => { }
        d => {
        }
        e => {



        }
        // collapsing here is safe
        ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff => {
        }
        // collapsing here exceeds line length
        ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffg => {
        }
        h => { // comment above block
        }
        i => {
        } // comment below block
        j => {
            // comment inside block
        }
        j2 => {
            // comments inside...
        } // ... and after
        // TODO uncomment when vertical whitespace is handled better
        // k => {
        //
        //     // comment with WS above
        // }
        // l => {
        //     // comment with ws below
        //     
        // }
        m => {
        } n => { } o =>
        {

        }
        p => { // Dont collapse me
        } q => { } r =>
        {

        }
        s => 0, // s comment
        // t comment
        t => 1,
        u => 2,
        // TODO uncomment when block-support exists
        // v => {
        // } /* funky block
        //    * comment */
        // final comment
    }
}

fn issue355() {
    match mac {
        a => println!("a", b),
        b => vec!(1, 2),
        c => vec!(3; 4),
        d => {
            println!("a", b)
        }
        e => {
            vec!(1, 2)
        }
        f => {
            vec!(3; 4)
        }
        h => println!("a", b), // h comment
        i => vec!(1, 2), // i comment
        j => vec!(3; 4), // j comment
        // k comment
        k => println!("a", b),
        // l comment
        l => vec!(1, 2),
        // m comment
        m => vec!(3; 4),
        // Rewrite splits macro
        nnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn => println!("a", b),
        // Rewrite splits macro
        oooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo => vec!(1, 2),
        // Macro support fails to recognise this macro as splitable
        // We push the whole expr to a new line, TODO split this macro as well
        pppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppp => vec!(3; 4),
        // q, r and s: Rewrite splits match arm
        qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq => println!("a", b),
        rrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrr => vec!(1, 2),
        ssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssss => vec!(3; 4),
        // Funky bracketing styles
        t =>      println!{"a", b},
        u => vec!{1, 2},
        v => vec!{3; 4},
        w => println!["a", b],
        x =>      vec![1, 2],
        y =>vec![3; 4],
        // Brackets with comments
        tc => println!{"a", b}, // comment
        uc => vec!{1, 2}, // comment
        vc =>vec!{3; 4}, // comment
        wc =>println!["a", b], // comment
        xc => vec![1,2], // comment
        yc =>        vec![3; 4], // comment
    }
}

fn arrays() {
    let x = [0,
         1,
         2,
         3,
         4,
         5,
         6,
         7,
         8,
         9,
         0,
         1,
         2,
         3,
         4,
         5,
         6,
         7,
         8,
         9,
         0,
         7,
         8,
         9,
         0,
         1,
         2,
         3,
         4,
         5,
         6,
         7,
         8,
         9,
         0];

    let y = [/* comment */ 1, 2 /* post comment */, 3];

    let z = [xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx, yyyyyyyyyyyyyyyyyyyyyyyyyyy, zzzzzzzzzzzzzzzzzz, q];

    [ 1 +   3, 4 ,  5, 6, 7, 7, fncall::<Vec<_>>(3-1)]
}

fn returns() {
    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa && return;

    return aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;
}