-
-
Notifications
You must be signed in to change notification settings - Fork 137
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
- Loading branch information
Showing
1 changed file
with
133 additions
and
0 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,133 @@ | ||
#![deny(clippy::all, clippy::pedantic)] | ||
|
||
use std::fmt::{self, Debug, Display}; | ||
use thiserror::Error; | ||
|
||
pub struct NoFormat; | ||
|
||
#[derive(Debug)] | ||
pub struct DebugOnly; | ||
|
||
pub struct DisplayOnly; | ||
|
||
impl Display for DisplayOnly { | ||
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { | ||
f.write_str("display only") | ||
} | ||
} | ||
|
||
#[derive(Debug)] | ||
pub struct DebugAndDisplay; | ||
|
||
impl Display for DebugAndDisplay { | ||
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { | ||
f.write_str("debug and display") | ||
} | ||
} | ||
|
||
/* | ||
// Should expand to: | ||
// | ||
// impl<E> Display for EnumDebugField<E> | ||
// where | ||
// E: Debug; | ||
// | ||
// impl<E> Error for EnumDebugField<E> | ||
// where | ||
// Self: Debug + Display; | ||
// | ||
#[derive(Error, Debug)] | ||
pub enum EnumDebugGeneric<E> { | ||
#[error("{0:?}")] | ||
FatalError(E), | ||
} | ||
// Should expand to: | ||
// | ||
// impl<E> Display for EnumFromGeneric<E>; | ||
// | ||
// impl<E> Error for EnumFromGeneric<E> | ||
// where | ||
// EnumDebugGeneric<E>: Error + 'static, | ||
// Self: Debug + Display; | ||
// | ||
#[derive(Error, Debug)] | ||
pub enum EnumFromGeneric<E> { | ||
#[error("enum from generic")] | ||
Source(#[from] EnumDebugGeneric<E>), | ||
} | ||
// Should expand to: | ||
// | ||
// impl<HasDisplay, HasDebug, HasNeither> Display | ||
// for EnumCompound<HasDisplay, HasDebug, HasNeither> | ||
// where | ||
// HasDisplay: Display, | ||
// HasDebug: Debug; | ||
// | ||
// impl<HasDisplay, HasDebug, HasNeither> Error | ||
// for EnumCompound<HasDisplay, HasDebug, HasNeither> | ||
// where | ||
// Self: Debug + Display; | ||
// | ||
#[derive(Error)] | ||
pub enum EnumCompound<HasDisplay, HasDebug, HasNeither> { | ||
#[error("{0} {1:?}")] | ||
DisplayDebug(HasDisplay, HasDebug), | ||
#[error("{0}")] | ||
Display(HasDisplay, HasNeither), | ||
#[error("{1:?}")] | ||
Debug(HasNeither, HasDebug), | ||
} | ||
impl<HasDisplay, HasDebug, HasNeither> Debug for EnumCompound<HasDisplay, HasDebug, HasNeither> { | ||
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { | ||
f.write_str("EnumCompound") | ||
} | ||
} | ||
#[test] | ||
fn test_display_enum_compound() { | ||
let mut instance: EnumCompound<DisplayOnly, DebugOnly, NoFormat>; | ||
instance = EnumCompound::DisplayDebug(DisplayOnly, DebugOnly); | ||
assert_eq!(format!("{}", instance), "display only DebugOnly"); | ||
instance = EnumCompound::Display(DisplayOnly, NoFormat); | ||
assert_eq!(format!("{}", instance), "display only"); | ||
instance = EnumCompound::Debug(NoFormat, DebugOnly); | ||
assert_eq!(format!("{}", instance), "DebugOnly"); | ||
} | ||
*/ | ||
|
||
// Should expand to: | ||
// | ||
// impl<E> Display for StructDebugGeneric<E> | ||
// where | ||
// E: Debug; | ||
// | ||
// impl<E> Error for StructDebugGeneric<E> | ||
// where | ||
// Self: Debug + Display; | ||
// | ||
#[derive(Error, Debug)] | ||
#[error("{underlying:?}")] | ||
pub struct StructDebugGeneric<E> { | ||
pub underlying: E, | ||
} | ||
|
||
/* | ||
// Should expand to: | ||
// | ||
// impl<E> Error for StructFromGeneric<E> | ||
// where | ||
// StructDebugGeneric<E>: Error + 'static, | ||
// Self: Debug + Display; | ||
// | ||
#[derive(Error, Debug)] | ||
pub struct StructFromGeneric<E> { | ||
#[from] | ||
pub source: StructDebugGeneric<E>, | ||
} | ||
*/ |