bjoernager/rust
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Small cleanups in assert!() and panic_fmt lint.

Browse source 
(From the PR feedback.)

Co-authored-by: Esteban Küber <esteban@kuber.com.ar>
This commit is contained in:
Mara Bos 2020-10-19 21:14:05 +02:00
parent ff8df0bbe3
commit 0f193d1a62
4 changed files with 48 additions and 50 deletions
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60
compiler/rustc_builtin_macros/src/assert.rs
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@ -27,37 +27,35 @@ pub fn expand_assert<'cx>(
// context to pick up whichever is currently in scope.
let sp = cx.with_call_site_ctxt(sp);
let panic_call = {
if let Some(tokens) = custom_message {
// Pass the custom message to panic!().
cx.expr(
sp,
ExprKind::MacCall(MacCall {
path: Path::from_ident(Ident::new(sym::panic, sp)),
args: P(MacArgs::Delimited(
DelimSpan::from_single(sp),
MacDelimiter::Parenthesis,
tokens,
)),
prior_type_ascription: None,
}),
)
} else {
// Pass our own message directly to $crate::panicking::panic(),
// because it might contain `{` and `}` that should always be
// passed literally.
cx.expr_call_global(
sp,
cx.std_path(&[sym::panicking, sym::panic]),
vec![cx.expr_str(
DUMMY_SP,
Symbol::intern(&format!(
"assertion failed: {}",
pprust::expr_to_string(&cond_expr).escape_debug()
)),
)],
)
}
let panic_call = if let Some(tokens) = custom_message {
// Pass the custom message to panic!().
cx.expr(
sp,
ExprKind::MacCall(MacCall {
path: Path::from_ident(Ident::new(sym::panic, sp)),
args: P(MacArgs::Delimited(
DelimSpan::from_single(sp),
MacDelimiter::Parenthesis,
tokens,
)),
prior_type_ascription: None,
}),
)
} else {
// Pass our own message directly to $crate::panicking::panic(),
// because it might contain `{` and `}` that should always be
// passed literally.
cx.expr_call_global(
sp,
cx.std_path(&[sym::panicking, sym::panic]),
vec![cx.expr_str(
DUMMY_SP,
Symbol::intern(&format!(
"assertion failed: {}",
pprust::expr_to_string(&cond_expr).escape_debug()
)),
)],
)
};
let if_expr =
cx.expr_if(sp, cx.expr(sp, ExprKind::Unary(UnOp::Not, cond_expr)), panic_call, None);