`Lit::from_included_bytes` calls `Lit::from_lit_kind`, but the two call
sites only need the resulting `token::Lit`, not the full `ast::Lit`.
This commit changes those call sites to use `LitKind::to_token_lit`,
which means `from_included_bytes` can be removed.
Instead of `ast::Lit`.
Literal lowering now happens at two different times. Expression literals
are lowered when HIR is crated. Attribute literals are lowered during
parsing.
This commit changes the language very slightly. Some programs that used
to not compile now will compile. This is because some invalid literals
that are removed by `cfg` or attribute macros will no longer trigger
errors. See this comment for more details:
https://github.com/rust-lang/rust/pull/102944#issuecomment-1277476773
Using an obviously-placeholder syntax. An RFC would still be needed before this could have any chance at stabilization, and it might be removed at any point.
But I'd really like to have it in nightly at least to ensure it works well with try_trait_v2, especially as we refactor the traits.
The `print_expr` method already places an `ibox(INDENT_UNIT)` around
every expr that gets printed. Some exprs were then using `self.head`
inside of that, which does its own `cbox(INDENT_UNIT)`, resulting in two
levels of indentation:
while true {
stuff;
}
This commit fixes those cases to produce the expected single level of
indentation within every expression containing a block.
while true {
stuff;
}
