rust/tests/pretty/hir-fn-params.rs
Nicholas Nethercote e885122147 Add a pretty printing test for fn params.
Note that multiple parts of the output are incorrect. The following
commits will fix this.
2025-03-14 06:29:24 +11:00

34 lines
960 B
Rust

//@ pretty-compare-only
//@ pretty-mode:hir
//@ pp-exact:hir-fn-params.pp
// This tests the pretty-printing of various kinds of function parameters.
//---------------------------------------------------------------------------
// Normal functions and methods.
fn normal_fn(_: u32, a: u32) {}
struct S;
impl S {
fn method(_: u32, a: u32) {}
}
//---------------------------------------------------------------------------
// More exotic forms, which get a different pretty-printing path. In the past,
// anonymous params and `_` params printed incorrectly, e.g. `fn(u32, _: u32)`
// was printed as `fn(: u32, : u32)`.
//
// Ideally we would also test invalid patterns, e.g. `fn(1: u32, &a: u32)`,
// because they had similar problems. But the pretty-printing tests currently
// can't contain compile errors.
fn bare_fn(x: fn(u32, _: u32, a: u32)) {}
extern "C" {
fn foreign_fn(_: u32, a: u32);
}
trait T {
fn trait_fn(u32, _: u32, a: u32);
}