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5099ac24 FG |
1 | macro_rules! make_macro { |
2 | ($macro_name:ident $($matcher:tt)*) => { | |
3 | #[macro_export] | |
4 | macro_rules! $macro_name { | |
5 | (<= $($matcher)* =>) => {}; | |
6 | } | |
7 | } | |
8 | } | |
9 | ||
10 | // @has macro_generated_macro/macro.interpolations.html //pre 'macro_rules! interpolations {' | |
11 | // @has - //pre '(<= type $($i:ident)::* + $e:expr =>) => { ... };' | |
12 | make_macro!(interpolations type $($i:ident)::* + $e:expr); | |
13 | interpolations!(<= type foo::bar + x.sort() =>); | |
14 | ||
15 | // @has macro_generated_macro/macro.attributes.html //pre 'macro_rules! attributes {' | |
16 | // @has - //pre '(<= #![no_std] #[cfg(feature = "alloc")] =>) => { ... };' | |
17 | make_macro!(attributes #![no_std] #[cfg(feature = "alloc")]); | |
18 | ||
19 | // @has macro_generated_macro/macro.groups.html //pre 'macro_rules! groups {' | |
20 | // @has - //pre '(<= fn {} () { foo[0] } =>) => { ... };' | |
21 | make_macro!(groups fn {}() {foo[0]}); | |
22 | ||
23 | // @snapshot macro_linebreak_pre macro_generated_macro/macro.linebreak.html //pre/text() | |
24 | 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); | |
25 | ||
26 | // @snapshot macro_morestuff_pre macro_generated_macro/macro.morestuff.html //pre/text() | |
27 | make_macro!(morestuff | |
28 | "space between most kinds of tokens": 1 $x + @ :: >>= 'static | |
29 | "no space inside paren or bracket": (2 a) [2 a] $(2 $a:tt)* | |
30 | "space inside curly brace": { 2 a } | |
31 | "no space inside empty delimiters": () [] {} | |
32 | "no space before comma or semicolon": a, (a), { a }, a; [T; 0]; | |
33 | "the three repetition specifiers": $(@)*, $(@)+, $(@)? | |
34 | "repetition separators": $(@)|*, $(@)|+, $(@)==*, $(@)static* | |
35 | "plus or star cannot be a repetition separator": $(@)+ * $(@)* + | |
36 | "no space between ident and paren": let _ = f(0) + f[0] + Struct {}; | |
37 | "space between keyword and paren": return (a,) & for x in (..) | |
38 | "some special case keywords": pub(crate), fn() -> u8, Self(0, 0) | |
39 | ); |