| macro_rules! make_macro { | |
| ($macro_name:ident $($matcher:tt)*) => { | |
| #[macro_export] | |
| macro_rules! $macro_name { | |
| (<= $($matcher)* =>) => {}; | |
| } | |
| } | |
| } | |
| //@ has macro_generated_macro/macro.interpolations.html //pre 'macro_rules! interpolations {' | |
| //@ has - //pre '(<= type $($i:ident)::* + $e:expr =>) => { ... };' | |
| make_macro!(interpolations type $($i:ident)::* + $e:expr); | |
| interpolations!(<= type foo::bar + x.sort() =>); | |
| //@ has macro_generated_macro/macro.attributes.html //pre 'macro_rules! attributes {' | |
| //@ has - //pre '(<= #![no_std] #[cfg(feature = "alloc")] =>) => { ... };' | |
| make_macro!(attributes #![no_std] #[cfg(feature = "alloc")]); | |
| //@ has macro_generated_macro/macro.groups.html //pre 'macro_rules! groups {' | |
| //@ has - //pre '(<= fn {} () { foo[0] } =>) => { ... };' | |
| make_macro!(groups fn {}() {foo[0]}); | |
| //@ snapshot macro_linebreak_pre macro_generated_macro/macro.linebreak.html //pre/text() | |
| make_macro!(linebreak 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28); | |
| //@ snapshot macro_morestuff_pre macro_generated_macro/macro.morestuff.html //pre/text() | |
| make_macro!(morestuff | |
| "space between most kinds of tokens": 1 $x:ident + @ :: >>= 'static | |
| "no space inside paren or bracket": (2 a) [2 a] $(2 $a:tt)* | |
| "space inside curly brace": { 2 a } | |
| "no space inside empty delimiters": () [] {} | |
| "no space before comma or semicolon": a, (a), { a }, a; [T; 0]; | |
| "the three repetition specifiers": $(@)*, $(@)+, $(@)? | |
| "repetition separators": $(@)|*, $(@)|+, $(@)==*, $(@)static* | |
| "plus or star cannot be a repetition separator": $(@)+ * $(@)* + | |
| "no space between ident and paren": let _ = f(0) + f[0] + Struct {}; | |
| "space between keyword and paren": return (a,) & for x in (..) | |
| "some special case keywords": pub(crate), fn() -> u8, Self(0, 0) | |
| ); |