93 lines
1.8 KiB
Rust
93 lines
1.8 KiB
Rust
//@run-rustfix
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//@aux-build:proc_macros.rs:proc-macro
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#![allow(
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unused_variables,
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dead_code,
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clippy::derive_partial_eq_without_eq,
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clippy::needless_if
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)]
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#![warn(clippy::equatable_if_let)]
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extern crate proc_macros;
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use proc_macros::{external, inline_macros};
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use std::cmp::Ordering;
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#[derive(PartialEq)]
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enum Enum {
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TupleVariant(i32, u64),
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RecordVariant { a: i64, b: u32 },
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UnitVariant,
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Recursive(Struct),
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}
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#[derive(PartialEq)]
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struct Struct {
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a: i32,
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b: bool,
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}
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struct NoPartialEqStruct {
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a: i32,
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b: bool,
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}
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enum NotPartialEq {
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A,
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B,
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}
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enum NotStructuralEq {
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A,
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B,
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}
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impl PartialEq for NotStructuralEq {
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fn eq(&self, _: &NotStructuralEq) -> bool {
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false
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}
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}
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#[inline_macros]
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fn main() {
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let a = 2;
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let b = 3;
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let c = Some(2);
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let d = Struct { a: 2, b: false };
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let e = Enum::UnitVariant;
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let f = NotPartialEq::A;
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let g = NotStructuralEq::A;
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let h = NoPartialEqStruct { a: 2, b: false };
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// true
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if let 2 = a {}
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if let Ordering::Greater = a.cmp(&b) {}
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if let Some(2) = c {}
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if let Struct { a: 2, b: false } = d {}
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if let Enum::TupleVariant(32, 64) = e {}
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if let Enum::RecordVariant { a: 64, b: 32 } = e {}
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if let Enum::UnitVariant = e {}
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if let (Enum::UnitVariant, &Struct { a: 2, b: false }) = (e, &d) {}
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// false
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if let 2 | 3 = a {}
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if let x @ 2 = a {}
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if let Some(3 | 4) = c {}
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if let Struct { a, b: false } = d {}
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if let Struct { a: 2, b: x } = d {}
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if let NotPartialEq::A = f {}
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if let NotStructuralEq::A = g {}
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if let Some(NotPartialEq::A) = Some(f) {}
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if let Some(NotStructuralEq::A) = Some(g) {}
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if let NoPartialEqStruct { a: 2, b: false } = h {}
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if let inline!("abc") = "abc" {
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println!("OK");
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}
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external!({ if let 2 = $a {} });
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}
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