mikros/rust
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

More tests for token stream pretty-printing with adjacent punctuation.

Browse Source 
We currently do the wrong thing on a lot of these. The next commit will
fix things.
This commit is contained in:
Nicholas Nethercote 2023-11-01 08:35:13 +11:00
parent 783d4b8b26
commit 438b9a6e82
1 changed files with 29 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

29
tests/ui/macros/stringify.rs
View File

@ -801,3 +801,32 @@ fn test_vis() {
assert_eq!(inherited_vis!(struct), "");
assert_eq!(stringify!(), "");
}
macro_rules! p {
([$($tt:tt)*], $s:literal) => {
assert_eq!(stringify!($($tt)*), $s);
};
}
#[test]
fn test_punct() {
// For all these cases, we must preserve spaces between the tokens.
// Otherwise, any old proc macro that parses pretty-printed code might glue
// together tokens that shouldn't be glued.
p!([ = = < < <= <= == == != != >= >= > > ], "= = < < <= <= == == != != >= >= > >");
p!([ && && & & || || | | ! ! ], "&& && & & || || | |!!"); // FIXME
p!([ ~ ~ @ @ # # ], "~ ~ @ @ # #");
p!([ . . .. .. ... ... ..= ..=], ".... .. ... ... ..= ..="); // FIXME
p!([ , , ; ; : : :: :: ], ",, ; ; : : :: ::"); // FIXME
p!([ -> -> <- <- => =>], "-> -> <- <- => =>");
p!([ $ $ ? ? ' ' ], "$$? ? ' '"); // FIXME
p!([ + + += += - - -= -= * * *= *= / / /= /= ], "+ + += += - - -= -= * * *= *= / / /= /=");
p!([ % % %= %= ^ ^ ^= ^= << << <<= <<= >> >> >>= >>= ],
"% % %= %= ^ ^ ^= ^= << << <<= <<= >> >> >>= >>=");
// For these one we must insert spaces between adjacent tokens, again due
// to proc macros.
p!([ +! ?= |> >>@ --> <-- $$ =====> ], "+! ? = | > >> @ - -> <- - $$== == =>"); // FIXME
p!([ ,; ;, ** @@ $+$ >< <> ?? +== ], ", ; ;, * * @ @ $+ $> < < > ? ? += ="); // FIXME
p!([ :#!@|$=&*,+;*~? ], ": #! @ | $= & *, + ; * ~ ?"); // FIXME
}