mirror of
https://github.com/rust-lang/rust
synced 2024-10-01 06:14:33 +00:00
796be88062
When suggesting a type on inference error, do not use `{closure@..}`.
Instead, replace with an appropriate `fn` ptr.
On the error message, use `short_ty_string` and write long types to
disk.
```
error[E0284]: type annotations needed for `Select<{closure@lib.rs:2782:13}, _, Expression<'_>, _>`
--> crates/lang/src/parser.rs:41:13
|
41 | let lit = select! {
| ^^^
42 | Token::Int(i) = e => Expression::new(Expr::Lit(ast::Lit::Int(i.parse().unwrap())), e.span()),
| ---- type must be known at this point
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= note: the full type name has been written to '/home/gh-estebank/iowo/target/debug/deps/lang-e2d6e25819442273.long-type-4587393693885174369.txt'
= note: cannot satisfy `<_ as chumsky::input::Input<'_>>::Span == SimpleSpan`
help: consider giving `lit` an explicit type, where the type for type parameter `I` is specified
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41 | let lit: Select<for<'a, 'b> fn(tokens::Token<'_>, &'a mut MapExtra<'_, 'b, _, _>) -> Option<Expression<'_>>, _, Expression<'_>, _> = select! {
| +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
```
instead of
```
error[E0284]: type annotations needed for `Select<{closure@/home/gh-estebank/.cargo/registry/src/index.crates.io-6f17d22bba15001f/chumsky-1.0.0-alpha.6/src/lib.rs:2782:13: 2782:28}, _, Expression<'_>, _>`
--> crates/lang/src/parser.rs:41:13
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41 | let lit = select! {
| ^^^
42 | Token::Int(i) = e => Expression::new(Expr::Lit(ast::Lit::Int(i.parse().unwrap())), e.span()),
| ---- type must be known at this point
|
= note: cannot satisfy `<_ as chumsky::input::Input<'_>>::Span == SimpleSpan`
help: consider giving `lit` an explicit type, where the type for type parameter `I` is specified
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41 | let lit: Select<{closure@/home/gh-estebank/.cargo/registry/src/index.crates.io-6f17d22bba15001f/chumsky-1.0.0-alpha.6/src/lib.rs:2782:13: 2782:28}, _, Expression<'_>, _> = select! {
| ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
```
Fix #123630.
228 lines
8 KiB
Plaintext
228 lines
8 KiB
Plaintext
error[E0283]: type annotations needed
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--> $DIR/issue-72690.rs:7:5
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LL | String::from("x".as_ref());
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| ^^^^^^ cannot infer type for reference `&_`
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= note: multiple `impl`s satisfying `String: From<&_>` found in the `alloc` crate:
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- impl From<&String> for String;
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- impl From<&str> for String;
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error[E0283]: type annotations needed
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--> $DIR/issue-72690.rs:7:22
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LL | String::from("x".as_ref());
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| ^^^^^^
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= note: multiple `impl`s satisfying `str: AsRef<_>` found in the following crates: `core`, `std`:
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- impl AsRef<OsStr> for str;
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- impl AsRef<Path> for str;
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- impl AsRef<[u8]> for str;
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- impl AsRef<str> for str;
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help: try using a fully qualified path to specify the expected types
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LL | String::from(<str as AsRef<T>>::as_ref("x"));
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| ++++++++++++++++++++++++++ ~
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error[E0283]: type annotations needed
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--> $DIR/issue-72690.rs:12:9
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LL | |x| String::from("x".as_ref());
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| ^^^^^^ cannot infer type for reference `&_`
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= note: multiple `impl`s satisfying `String: From<&_>` found in the `alloc` crate:
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- impl From<&String> for String;
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- impl From<&str> for String;
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error[E0283]: type annotations needed
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--> $DIR/issue-72690.rs:12:26
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LL | |x| String::from("x".as_ref());
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| ^^^^^^
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= note: multiple `impl`s satisfying `str: AsRef<_>` found in the following crates: `core`, `std`:
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- impl AsRef<OsStr> for str;
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- impl AsRef<Path> for str;
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- impl AsRef<[u8]> for str;
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- impl AsRef<str> for str;
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help: try using a fully qualified path to specify the expected types
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LL | |x| String::from(<str as AsRef<T>>::as_ref("x"));
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| ++++++++++++++++++++++++++ ~
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error[E0283]: type annotations needed for `&_`
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--> $DIR/issue-72690.rs:17:9
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LL | let _ = "x".as_ref();
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| ^ ------ type must be known at this point
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= note: multiple `impl`s satisfying `str: AsRef<_>` found in the following crates: `core`, `std`:
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- impl AsRef<OsStr> for str;
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- impl AsRef<Path> for str;
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- impl AsRef<[u8]> for str;
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- impl AsRef<str> for str;
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help: consider giving this pattern a type, where the type for type parameter `T` is specified
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LL | let _: &T = "x".as_ref();
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| ++++
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error[E0283]: type annotations needed
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--> $DIR/issue-72690.rs:21:5
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LL | String::from("x".as_ref());
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| ^^^^^^ cannot infer type for reference `&_`
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= note: multiple `impl`s satisfying `String: From<&_>` found in the `alloc` crate:
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- impl From<&String> for String;
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- impl From<&str> for String;
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error[E0283]: type annotations needed
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--> $DIR/issue-72690.rs:21:22
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LL | String::from("x".as_ref());
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| ^^^^^^
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= note: multiple `impl`s satisfying `str: AsRef<_>` found in the following crates: `core`, `std`:
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- impl AsRef<OsStr> for str;
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- impl AsRef<Path> for str;
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- impl AsRef<[u8]> for str;
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- impl AsRef<str> for str;
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help: try using a fully qualified path to specify the expected types
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LL | String::from(<str as AsRef<T>>::as_ref("x"));
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| ++++++++++++++++++++++++++ ~
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error[E0283]: type annotations needed
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--> $DIR/issue-72690.rs:28:5
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LL | String::from("x".as_ref());
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| ^^^^^^ cannot infer type for reference `&_`
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= note: multiple `impl`s satisfying `String: From<&_>` found in the `alloc` crate:
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- impl From<&String> for String;
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- impl From<&str> for String;
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error[E0283]: type annotations needed
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--> $DIR/issue-72690.rs:28:22
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LL | String::from("x".as_ref());
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| ^^^^^^
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= note: multiple `impl`s satisfying `str: AsRef<_>` found in the following crates: `core`, `std`:
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- impl AsRef<OsStr> for str;
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- impl AsRef<Path> for str;
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- impl AsRef<[u8]> for str;
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- impl AsRef<str> for str;
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help: try using a fully qualified path to specify the expected types
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LL | String::from(<str as AsRef<T>>::as_ref("x"));
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| ++++++++++++++++++++++++++ ~
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error[E0283]: type annotations needed
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--> $DIR/issue-72690.rs:37:5
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LL | String::from("x".as_ref());
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| ^^^^^^ cannot infer type for reference `&_`
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= note: multiple `impl`s satisfying `String: From<&_>` found in the `alloc` crate:
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- impl From<&String> for String;
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- impl From<&str> for String;
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error[E0283]: type annotations needed
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--> $DIR/issue-72690.rs:37:22
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LL | String::from("x".as_ref());
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| ^^^^^^
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= note: multiple `impl`s satisfying `str: AsRef<_>` found in the following crates: `core`, `std`:
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- impl AsRef<OsStr> for str;
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- impl AsRef<Path> for str;
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- impl AsRef<[u8]> for str;
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- impl AsRef<str> for str;
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help: try using a fully qualified path to specify the expected types
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LL | String::from(<str as AsRef<T>>::as_ref("x"));
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| ++++++++++++++++++++++++++ ~
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error[E0283]: type annotations needed
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--> $DIR/issue-72690.rs:46:5
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LL | String::from("x".as_ref());
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| ^^^^^^ cannot infer type for reference `&_`
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= note: multiple `impl`s satisfying `String: From<&_>` found in the `alloc` crate:
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- impl From<&String> for String;
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- impl From<&str> for String;
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error[E0283]: type annotations needed
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--> $DIR/issue-72690.rs:46:22
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LL | String::from("x".as_ref());
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| ^^^^^^
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= note: multiple `impl`s satisfying `str: AsRef<_>` found in the following crates: `core`, `std`:
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- impl AsRef<OsStr> for str;
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- impl AsRef<Path> for str;
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- impl AsRef<[u8]> for str;
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- impl AsRef<str> for str;
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help: try using a fully qualified path to specify the expected types
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LL | String::from(<str as AsRef<T>>::as_ref("x"));
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| ++++++++++++++++++++++++++ ~
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error[E0283]: type annotations needed
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--> $DIR/issue-72690.rs:53:5
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LL | String::from("x".as_ref());
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| ^^^^^^ cannot infer type for reference `&_`
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= note: multiple `impl`s satisfying `String: From<&_>` found in the `alloc` crate:
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- impl From<&String> for String;
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- impl From<&str> for String;
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error[E0283]: type annotations needed
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--> $DIR/issue-72690.rs:53:22
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LL | String::from("x".as_ref());
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| ^^^^^^
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= note: multiple `impl`s satisfying `str: AsRef<_>` found in the following crates: `core`, `std`:
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- impl AsRef<OsStr> for str;
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- impl AsRef<Path> for str;
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- impl AsRef<[u8]> for str;
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- impl AsRef<str> for str;
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help: try using a fully qualified path to specify the expected types
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LL | String::from(<str as AsRef<T>>::as_ref("x"));
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| ++++++++++++++++++++++++++ ~
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error[E0283]: type annotations needed
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--> $DIR/issue-72690.rs:62:5
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LL | String::from("x".as_ref());
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| ^^^^^^ cannot infer type for reference `&_`
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= note: multiple `impl`s satisfying `String: From<&_>` found in the `alloc` crate:
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- impl From<&String> for String;
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- impl From<&str> for String;
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error[E0283]: type annotations needed
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--> $DIR/issue-72690.rs:62:22
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LL | String::from("x".as_ref());
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| ^^^^^^
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= note: multiple `impl`s satisfying `str: AsRef<_>` found in the following crates: `core`, `std`:
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- impl AsRef<OsStr> for str;
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- impl AsRef<Path> for str;
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- impl AsRef<[u8]> for str;
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- impl AsRef<str> for str;
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help: try using a fully qualified path to specify the expected types
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LL | String::from(<str as AsRef<T>>::as_ref("x"));
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| ++++++++++++++++++++++++++ ~
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error: aborting due to 17 previous errors
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For more information about this error, try `rustc --explain E0283`.
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