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// rustfmt-edition: 2024
fn main() {
if let x = x && x {}
if xxx && let x = x {}
if aaaaaaaaaaaaaaaaaaaaa && aaaaaaaaaaaaaaa && aaaaaaaaa && let Some(x) = xxxxxxxxxxxx && aaaaaaa && let None = aaaaaaaaaa {}
if aaaaaaaaaaaaaaaaaaaaa && aaaaaaaaaaaaaaa && aaaaaaaaa && let Some(x) = xxxxxxxxxxxx && aaaaaaa && let None = aaaaaaaaaa {}
if let Some(Struct { x:TS(1,2) }) = path::to::<_>(hehe)
&& let [Simple, people] = /* get ready */ create_universe(/* hi */ GreatPowers).initialize_badminton().populate_swamps() &&
let everybody = (Loops { hi /*hi*/ , ..loopy() }) && summons::triumphantly() { todo!() }
if let XXXXXXXXX { xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx, yyyyyyyyyyyyy, zzzzzzzzzzzzz} = xxxxxxx()
&& let Foo = bar() { todo!() }
}
fn test_single_line_let_chain() {
// first item in let-chain is an ident
if a && let Some(b) = foo() {
}
// first item in let-chain is a bool literal
if true && let Some(x) = y {
}
// first item in let-chain is a unary ! with an ident
let unary_not = if !from_hir_call
&& let Some(p) = parent
{
};
// first item in let-chain is a unary * with an ident
let unary_deref = if *some_deref
&& let Some(p) = parent
{
};
// first item in let-chain is a unary - (neg) with an ident
let unary_neg = if -some_ident
&& let Some(p) = parent
{
};
// first item in let-chain is a try (?) with an ident
let try_ = if some_try?
&& let Some(p) = parent
{
};
// first item in let-chain is an ident wrapped in parens
let in_parens = if (some_ident)
&& let Some(p) = parent
{
};
// first item in let-chain is a ref & with an ident
let _ref = if &some_ref
&& let Some(p) = parent
{
};
// first item in let-chain is a ref &mut with an ident
let mut_ref = if &mut some_ref
&& let Some(p) = parent
{
};
// chain unary ref and try
let chain_of_unary_ref_and_try = if !&*some_ref?
&& let Some(p) = parent {
};
}
fn test_multi_line_let_chain() {
// Can only single line the let-chain if the first item is an ident
if let Some(x) = y && a {
}
// More than one let-chain must be formatted on multiple lines
if let Some(x) = y && let Some(a) = b {
}
// The ident isn't long enough so we don't wrap the first let-chain
if a && let Some(x) = y && let Some(a) = b {
}
// The ident is long enough so both let-chains are wrapped
if aaa && let Some(x) = y && let Some(a) = b {
}
// function call
if a() && let Some(x) = y {
}
// cast to a bool
if 1 as bool && let Some(x) = y {
}
// matches! macro call
if matches!(a, some_type) && let Some(x) = y {
}
// block expression returning bool
if { true } && let Some(x) = y {
}
// field access
if a.x && let Some(x) = y {
}
}
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