rust/tests/source/macro_rules.rs
2018-03-19 08:23:53 +09:00

145 lines
3.3 KiB
Rust

// rustfmt-error_on_line_overflow: false
macro_rules! m {
() => ();
( $ x : ident ) => ();
( $ m1 : ident , $ m2 : ident , $ x : ident ) => ();
( $($beginning:ident),*;$middle:ident;$($end:ident),* ) => ();
( $($beginning: ident),*; $middle: ident; $($end: ident),*; $($beginning: ident),*; $middle: ident; $($end: ident),* ) => {};
( $ name : ident ( $ ( $ dol : tt $ var : ident ) * ) $ ( $ body : tt ) * ) => ();
( $( $ i : ident : $ ty : ty , $def : expr , $stb : expr , $ ( $ dstring : tt ) , + ) ; + $ ( ; ) *
$( $ i : ident : $ ty : ty , $def : expr , $stb : expr , $ ( $ dstring : tt ) , + ) ; + $ ( ; ) *
) => {};
( $foo: tt foo [$ attr : meta] $name: ident ) => {};
( $foo: tt [$ attr: meta] $name: ident ) => {};
( $foo: tt &'a [$attr : meta] $name: ident ) => {};
( $foo: tt foo # [ $attr : meta] $name: ident ) => {};
( $foo: tt # [ $attr : meta] $name: ident) => {};
( $foo: tt &'a # [ $attr : meta] $name: ident ) => {};
( $ x : tt foo bar foo bar foo bar $ y : tt => x*y*z $ z : tt , $ ( $a: tt ) , * ) => {};
}
macro_rules! m {
// a
($expr :expr, $( $func : ident ) * ) => {
{
let x = $expr;
$func (
x
)
}
};
/* b */
() => {/* c */};
(@tag) =>
{
};
// d
( $item:ident ) => {
mod macro_item { struct $item ; }
};
}
macro m2 {
// a
($expr :expr, $( $func : ident ) * ) => {
{
let x = $expr;
$func (
x
)
}
}
/* b */
() => {/* c */}
(@tag) =>
{
}
// d
( $item:ident ) => {
mod macro_item { struct $item ; }
}
}
// #2438, #2476
macro_rules! m {
() => {
fn foo() {
this_line_is_98_characters_long_xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx(
);
}
}
}
macro_rules! m {
() => {
fn foo() {
this_line_is_99_characters_long_xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx(
);
}
};
}
macro_rules! m {
() => {
fn foo() {
this_line_is_100_characters_long_xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx(
);
}
};
}
macro_rules! m {
() => {
fn foo() {
this_line_is_101_characters_long_xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx(
);
}
};
}
// #2439
macro_rules! m {
($line0_xxxxxxxxxxxxxxxxx: expr, $line1_xxxxxxxxxxxxxxxxx: expr, $line2_xxxxxxxxxxxxxxxxx: expr, $line3_xxxxxxxxxxxxxxxxx: expr,) => {};
}
// #2466
// Skip formatting `macro_rules!` that are not using `{}`.
macro_rules! m (
() => ()
);
macro_rules! m [
() => ()
];
// #2470
macro foo($type_name: ident, $docs: expr) {
#[allow(non_camel_case_types)]
#[doc=$docs]
#[derive(Debug, Clone, Copy)]
pub struct $type_name;
}
// #2538
macro_rules! add_message_to_notes {
($msg:expr) => {{
let mut lines = message.lines();
notes.push_str(&format!("\n{}: {}", level, lines.next().unwrap()));
for line in lines {
notes.push_str(&format!(
"\n{:indent$}{line}",
"",
indent = level.len() + 2,
line = line,
));
}
}}
}