Rollup merge of #88775 - pnkfelix:revert-anon-union-parsing, r=davidtwco
Revert anon union parsing Revert PR #84571 and #85515, which implemented anonymous union parsing in a manner that broke the context-sensitivity for the `union` keyword and thus broke stable Rust code. Fix #88583.
This commit is contained in:
Manish Goregaokar
GitHub
commit
fb2d7dff80
21 changed files with 50 additions and 595 deletions
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@ -1,24 +0,0 @@
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// Test for issue 85480
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// Pretty print anonymous struct and union types
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// pp-exact
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// pretty-compare-only
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struct Foo {
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_: union {
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_: struct {
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a: u8,
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b: u16,
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},
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c: u32,
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},
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d: u64,
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e: f32,
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}
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type A =
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struct {
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field: u8,
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};
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fn main() { }
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@ -1,27 +0,0 @@
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struct Foo {
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foo: u8,
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_: union { //~ ERROR unnamed fields are not yet fully implemented [E0658]
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//~^ ERROR unnamed fields are not yet fully implemented [E0658]
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//~| ERROR anonymous unions are unimplemented
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bar: u8,
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baz: u16
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}
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}
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union Bar {
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foobar: u8,
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_: struct { //~ ERROR unnamed fields are not yet fully implemented [E0658]
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//~^ ERROR unnamed fields are not yet fully implemented [E0658]
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//~| ERROR anonymous structs are unimplemented
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//~| ERROR unions may not contain fields that need dropping [E0740]
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foobaz: u8,
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barbaz: u16
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}
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}
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struct S;
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struct Baz {
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_: S //~ ERROR unnamed fields are not yet fully implemented [E0658]
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}
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fn main(){}
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@ -1,111 +0,0 @@
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error[E0658]: unnamed fields are not yet fully implemented
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--> $DIR/feature-gate-unnamed_fields.rs:3:5
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LL | _: union {
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| ^
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= note: see issue #49804 <https://github.com/rust-lang/rust/issues/49804> for more information
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= help: add `#![feature(unnamed_fields)]` to the crate attributes to enable
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error[E0658]: unnamed fields are not yet fully implemented
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--> $DIR/feature-gate-unnamed_fields.rs:3:8
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|
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LL | _: union {
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| ________^
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LL | |
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LL | |
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LL | | bar: u8,
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LL | | baz: u16
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LL | | }
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| |_____^
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|
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= note: see issue #49804 <https://github.com/rust-lang/rust/issues/49804> for more information
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= help: add `#![feature(unnamed_fields)]` to the crate attributes to enable
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error[E0658]: unnamed fields are not yet fully implemented
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--> $DIR/feature-gate-unnamed_fields.rs:13:5
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|
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LL | _: struct {
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| ^
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= note: see issue #49804 <https://github.com/rust-lang/rust/issues/49804> for more information
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= help: add `#![feature(unnamed_fields)]` to the crate attributes to enable
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error[E0658]: unnamed fields are not yet fully implemented
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--> $DIR/feature-gate-unnamed_fields.rs:13:8
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LL | _: struct {
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| ________^
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LL | |
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LL | |
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LL | |
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LL | | foobaz: u8,
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LL | | barbaz: u16
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LL | | }
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| |_____^
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|
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= note: see issue #49804 <https://github.com/rust-lang/rust/issues/49804> for more information
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= help: add `#![feature(unnamed_fields)]` to the crate attributes to enable
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error[E0658]: unnamed fields are not yet fully implemented
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--> $DIR/feature-gate-unnamed_fields.rs:24:5
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LL | _: S
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| ^
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= note: see issue #49804 <https://github.com/rust-lang/rust/issues/49804> for more information
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= help: add `#![feature(unnamed_fields)]` to the crate attributes to enable
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error: anonymous unions are unimplemented
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--> $DIR/feature-gate-unnamed_fields.rs:3:8
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|
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LL | _: union {
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| ________^
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LL | |
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LL | |
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LL | | bar: u8,
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LL | | baz: u16
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LL | | }
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| |_____^
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error: anonymous structs are unimplemented
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--> $DIR/feature-gate-unnamed_fields.rs:13:8
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|
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LL | _: struct {
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| ________^
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LL | |
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LL | |
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LL | |
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LL | | foobaz: u8,
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LL | | barbaz: u16
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LL | | }
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| |_____^
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error[E0740]: unions may not contain fields that need dropping
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--> $DIR/feature-gate-unnamed_fields.rs:13:5
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LL | / _: struct {
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LL | |
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LL | |
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LL | |
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LL | | foobaz: u8,
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LL | | barbaz: u16
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LL | | }
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| |_____^
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|
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note: `std::mem::ManuallyDrop` can be used to wrap the type
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--> $DIR/feature-gate-unnamed_fields.rs:13:5
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LL | / _: struct {
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LL | |
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LL | |
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LL | |
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LL | | foobaz: u8,
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LL | | barbaz: u16
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LL | | }
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| |_____^
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error: aborting due to 8 previous errors
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Some errors have detailed explanations: E0658, E0740.
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For more information about an error, try `rustc --explain E0658`.
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15
src/test/ui/parser/issue-88583-union-as-ident.rs
Normal file
15
src/test/ui/parser/issue-88583-union-as-ident.rs
Normal file
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@ -0,0 +1,15 @@
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// check-pass
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#![allow(non_camel_case_types)]
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struct union;
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impl union {
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pub fn new() -> Self {
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union { }
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}
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}
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fn main() {
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let _u = union::new();
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}
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@ -1,52 +0,0 @@
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#![allow(incomplete_features)]
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#![feature(unnamed_fields)]
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fn f() -> struct { field: u8 } {} //~ ERROR anonymous structs are not allowed outside of unnamed struct or union fields
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//~^ ERROR anonymous structs are unimplemented
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fn f2(a: struct { field: u8 } ) {} //~ ERROR anonymous structs are not allowed outside of unnamed struct or union fields
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//~^ ERROR anonymous structs are unimplemented
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union G {
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field: struct { field: u8 } //~ ERROR anonymous structs are not allowed outside of unnamed struct or union fields
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//~^ ERROR anonymous structs are unimplemented
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}
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//~| ERROR unions may not contain fields that need dropping [E0740]
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struct H { _: u8 } // Should error after hir checks
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struct I(struct { field: u8 }, u8); //~ ERROR anonymous structs are not allowed outside of unnamed struct or union fields
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//~^ ERROR anonymous structs are unimplemented
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enum J {
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K(struct { field: u8 }), //~ ERROR anonymous structs are not allowed outside of unnamed struct or union fields
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//~^ ERROR anonymous structs are unimplemented
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L {
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_ : struct { field: u8 } //~ ERROR anonymous structs are not allowed outside of unnamed struct or union fields
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//~^ ERROR anonymous fields are not allowed outside of structs or unions
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//~| ERROR anonymous structs are unimplemented
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},
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M {
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_ : u8 //~ ERROR anonymous fields are not allowed outside of structs or unions
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}
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}
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static M: union { field: u8 } = 0; //~ ERROR anonymous unions are not allowed outside of unnamed struct or union fields
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//~^ ERROR anonymous unions are unimplemented
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type N = union { field: u8 }; //~ ERROR anonymous unions are not allowed outside of unnamed struct or union fields
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//~^ ERROR anonymous unions are unimplemented
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fn main() {
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const O: struct { field: u8 } = 0; //~ ERROR anonymous structs are not allowed outside of unnamed struct or union fields
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//~^ ERROR anonymous structs are unimplemented
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let p: [struct { field: u8 }; 1]; //~ ERROR anonymous structs are not allowed outside of unnamed struct or union fields
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//~^ ERROR anonymous structs are unimplemented
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let q: (struct { field: u8 }, u8); //~ ERROR anonymous structs are not allowed outside of unnamed struct or union fields
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//~^ ERROR anonymous structs are unimplemented
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let cl = || -> struct { field: u8 } {}; //~ ERROR anonymous structs are not allowed outside of unnamed struct or union fields
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//~^ ERROR anonymous structs are unimplemented
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}
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@ -1,175 +0,0 @@
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error: anonymous structs are not allowed outside of unnamed struct or union fields
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--> $DIR/restrict_anonymous.rs:4:11
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LL | fn f() -> struct { field: u8 } {}
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| ^^^^^^^^^^^^^^^^^^^^ anonymous struct declared here
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error: anonymous structs are not allowed outside of unnamed struct or union fields
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--> $DIR/restrict_anonymous.rs:7:10
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LL | fn f2(a: struct { field: u8 } ) {}
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| ^^^^^^^^^^^^^^^^^^^^ anonymous struct declared here
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error: anonymous structs are not allowed outside of unnamed struct or union fields
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--> $DIR/restrict_anonymous.rs:11:12
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|
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LL | field: struct { field: u8 }
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| ^^^^^^^^^^^^^^^^^^^^ anonymous struct declared here
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error: anonymous structs are not allowed outside of unnamed struct or union fields
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--> $DIR/restrict_anonymous.rs:18:10
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|
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LL | struct I(struct { field: u8 }, u8);
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| ^^^^^^^^^^^^^^^^^^^^ anonymous struct declared here
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error: anonymous structs are not allowed outside of unnamed struct or union fields
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--> $DIR/restrict_anonymous.rs:22:7
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|
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LL | K(struct { field: u8 }),
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| ^^^^^^^^^^^^^^^^^^^^ anonymous struct declared here
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error: anonymous fields are not allowed outside of structs or unions
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--> $DIR/restrict_anonymous.rs:25:9
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|
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LL | _ : struct { field: u8 }
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| -^^^^^^^^^^^^^^^^^^^^^^^
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| |
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| anonymous field declared here
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error: anonymous structs are not allowed outside of unnamed struct or union fields
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--> $DIR/restrict_anonymous.rs:25:13
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|
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LL | _ : struct { field: u8 }
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| ^^^^^^^^^^^^^^^^^^^^ anonymous struct declared here
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error: anonymous fields are not allowed outside of structs or unions
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--> $DIR/restrict_anonymous.rs:30:9
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|
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LL | _ : u8
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| -^^^^^
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| |
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| anonymous field declared here
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error: anonymous unions are not allowed outside of unnamed struct or union fields
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--> $DIR/restrict_anonymous.rs:34:11
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|
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LL | static M: union { field: u8 } = 0;
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| ^^^^^^^^^^^^^^^^^^^ anonymous union declared here
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error: anonymous unions are not allowed outside of unnamed struct or union fields
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--> $DIR/restrict_anonymous.rs:37:10
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|
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LL | type N = union { field: u8 };
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| ^^^^^^^^^^^^^^^^^^^ anonymous union declared here
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|
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error: anonymous structs are not allowed outside of unnamed struct or union fields
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--> $DIR/restrict_anonymous.rs:41:14
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|
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LL | const O: struct { field: u8 } = 0;
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| ^^^^^^^^^^^^^^^^^^^^ anonymous struct declared here
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|
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error: anonymous structs are not allowed outside of unnamed struct or union fields
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--> $DIR/restrict_anonymous.rs:44:13
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|
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LL | let p: [struct { field: u8 }; 1];
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| ^^^^^^^^^^^^^^^^^^^^ anonymous struct declared here
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|
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error: anonymous structs are not allowed outside of unnamed struct or union fields
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--> $DIR/restrict_anonymous.rs:47:13
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|
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LL | let q: (struct { field: u8 }, u8);
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| ^^^^^^^^^^^^^^^^^^^^ anonymous struct declared here
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|
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error: anonymous structs are not allowed outside of unnamed struct or union fields
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--> $DIR/restrict_anonymous.rs:50:20
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|
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LL | let cl = || -> struct { field: u8 } {};
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| ^^^^^^^^^^^^^^^^^^^^ anonymous struct declared here
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|
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error: anonymous structs are unimplemented
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--> $DIR/restrict_anonymous.rs:4:11
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|
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LL | fn f() -> struct { field: u8 } {}
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| ^^^^^^^^^^^^^^^^^^^^
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|
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error: anonymous structs are unimplemented
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--> $DIR/restrict_anonymous.rs:7:10
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|
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LL | fn f2(a: struct { field: u8 } ) {}
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| ^^^^^^^^^^^^^^^^^^^^
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|
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error: anonymous structs are unimplemented
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--> $DIR/restrict_anonymous.rs:11:12
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|
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LL | field: struct { field: u8 }
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| ^^^^^^^^^^^^^^^^^^^^
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|
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error: anonymous structs are unimplemented
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--> $DIR/restrict_anonymous.rs:18:10
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|
|
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LL | struct I(struct { field: u8 }, u8);
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| ^^^^^^^^^^^^^^^^^^^^
|
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|
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error: anonymous structs are unimplemented
|
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--> $DIR/restrict_anonymous.rs:22:7
|
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|
|
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LL | K(struct { field: u8 }),
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| ^^^^^^^^^^^^^^^^^^^^
|
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|
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error: anonymous structs are unimplemented
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--> $DIR/restrict_anonymous.rs:25:13
|
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|
|
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LL | _ : struct { field: u8 }
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| ^^^^^^^^^^^^^^^^^^^^
|
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|
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error: anonymous unions are unimplemented
|
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--> $DIR/restrict_anonymous.rs:34:11
|
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|
|
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LL | static M: union { field: u8 } = 0;
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| ^^^^^^^^^^^^^^^^^^^
|
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|
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error: anonymous unions are unimplemented
|
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--> $DIR/restrict_anonymous.rs:37:10
|
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|
|
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LL | type N = union { field: u8 };
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| ^^^^^^^^^^^^^^^^^^^
|
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|
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error: anonymous structs are unimplemented
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--> $DIR/restrict_anonymous.rs:44:13
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|
|
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LL | let p: [struct { field: u8 }; 1];
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| ^^^^^^^^^^^^^^^^^^^^
|
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|
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error: anonymous structs are unimplemented
|
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--> $DIR/restrict_anonymous.rs:47:13
|
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|
|
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LL | let q: (struct { field: u8 }, u8);
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| ^^^^^^^^^^^^^^^^^^^^
|
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|
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error: anonymous structs are unimplemented
|
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--> $DIR/restrict_anonymous.rs:50:20
|
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|
|
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LL | let cl = || -> struct { field: u8 } {};
|
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| ^^^^^^^^^^^^^^^^^^^^
|
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|
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error: anonymous structs are unimplemented
|
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--> $DIR/restrict_anonymous.rs:41:14
|
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|
|
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LL | const O: struct { field: u8 } = 0;
|
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| ^^^^^^^^^^^^^^^^^^^^
|
||||
|
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error[E0740]: unions may not contain fields that need dropping
|
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--> $DIR/restrict_anonymous.rs:11:5
|
||||
|
|
||||
LL | field: struct { field: u8 }
|
||||
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
||||
|
|
||||
note: `std::mem::ManuallyDrop` can be used to wrap the type
|
||||
--> $DIR/restrict_anonymous.rs:11:5
|
||||
|
|
||||
LL | field: struct { field: u8 }
|
||||
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
||||
|
||||
error: aborting due to 27 previous errors
|
||||
|
||||
For more information about this error, try `rustc --explain E0740`.
|
||||
|
|
@ -6,7 +6,7 @@ use std::cmp::{max, min, Ordering};
|
|||
use regex::Regex;
|
||||
use rustc_ast::visit;
|
||||
use rustc_ast::{ast, ptr};
|
||||
use rustc_span::{symbol, BytePos, Span};
|
||||
use rustc_span::{symbol, BytePos, Span, DUMMY_SP};
|
||||
|
||||
use crate::attr::filter_inline_attrs;
|
||||
use crate::comment::{
|
||||
|
|
@ -31,7 +31,12 @@ use crate::stmt::Stmt;
|
|||
use crate::utils::*;
|
||||
use crate::vertical::rewrite_with_alignment;
|
||||
use crate::visitor::FmtVisitor;
|
||||
use crate::DEFAULT_VISIBILITY;
|
||||
|
||||
const DEFAULT_VISIBILITY: ast::Visibility = ast::Visibility {
|
||||
kind: ast::VisibilityKind::Inherited,
|
||||
span: DUMMY_SP,
|
||||
tokens: None,
|
||||
};
|
||||
|
||||
fn type_annotation_separator(config: &Config) -> &str {
|
||||
colon_spaces(config)
|
||||
|
|
@ -972,7 +977,7 @@ impl<'a> StructParts<'a> {
|
|||
format_header(context, self.prefix, self.ident, self.vis, offset)
|
||||
}
|
||||
|
||||
pub(crate) fn from_variant(variant: &'a ast::Variant) -> Self {
|
||||
fn from_variant(variant: &'a ast::Variant) -> Self {
|
||||
StructParts {
|
||||
prefix: "",
|
||||
ident: variant.ident,
|
||||
|
|
|
|||
|
|
@ -32,7 +32,7 @@ use std::path::PathBuf;
|
|||
use std::rc::Rc;
|
||||
|
||||
use rustc_ast::ast;
|
||||
use rustc_span::{symbol, DUMMY_SP};
|
||||
use rustc_span::symbol;
|
||||
use thiserror::Error;
|
||||
|
||||
use crate::comment::LineClasses;
|
||||
|
|
@ -96,11 +96,6 @@ mod types;
|
|||
mod vertical;
|
||||
pub(crate) mod visitor;
|
||||
|
||||
const DEFAULT_VISIBILITY: ast::Visibility = ast::Visibility {
|
||||
kind: ast::VisibilityKind::Inherited,
|
||||
span: DUMMY_SP,
|
||||
tokens: None,
|
||||
};
|
||||
/// The various errors that can occur during formatting. Note that not all of
|
||||
/// these can currently be propagated to clients.
|
||||
#[derive(Error, Debug)]
|
||||
|
|
|
|||
|
|
@ -1,15 +1,15 @@
|
|||
use std::iter::ExactSizeIterator;
|
||||
use std::ops::Deref;
|
||||
|
||||
use rustc_ast::ast::{self, AttrVec, FnRetTy, Mutability};
|
||||
use rustc_span::{symbol::kw, symbol::Ident, BytePos, Pos, Span};
|
||||
use rustc_ast::ast::{self, FnRetTy, Mutability};
|
||||
use rustc_span::{symbol::kw, BytePos, Pos, Span};
|
||||
|
||||
use crate::comment::{combine_strs_with_missing_comments, contains_comment};
|
||||
use crate::config::lists::*;
|
||||
use crate::config::{IndentStyle, TypeDensity, Version};
|
||||
use crate::expr::{
|
||||
format_expr, rewrite_assign_rhs, rewrite_call, rewrite_tuple, rewrite_unary_prefix, ExprType,
|
||||
};
|
||||
use crate::items::StructParts;
|
||||
use crate::lists::{
|
||||
definitive_tactic, itemize_list, write_list, ListFormatting, ListItem, Separator,
|
||||
};
|
||||
|
|
@ -24,11 +24,6 @@ use crate::utils::{
|
|||
colon_spaces, extra_offset, first_line_width, format_extern, format_mutability,
|
||||
last_line_extendable, last_line_width, mk_sp, rewrite_ident,
|
||||
};
|
||||
use crate::DEFAULT_VISIBILITY;
|
||||
use crate::{
|
||||
comment::{combine_strs_with_missing_comments, contains_comment},
|
||||
items::format_struct_struct,
|
||||
};
|
||||
|
||||
#[derive(Copy, Clone, Debug, Eq, PartialEq)]
|
||||
pub(crate) enum PathContext {
|
||||
|
|
@ -769,54 +764,6 @@ impl Rewrite for ast::Ty {
|
|||
ast::TyKind::Tup(ref items) => {
|
||||
rewrite_tuple(context, items.iter(), self.span, shape, items.len() == 1)
|
||||
}
|
||||
ast::TyKind::AnonymousStruct(ref fields, recovered) => {
|
||||
let ident = Ident::new(
|
||||
kw::Struct,
|
||||
mk_sp(self.span.lo(), self.span.lo() + BytePos(6)),
|
||||
);
|
||||
let data = ast::VariantData::Struct(fields.clone(), recovered);
|
||||
let variant = ast::Variant {
|
||||
attrs: AttrVec::new(),
|
||||
id: self.id,
|
||||
span: self.span,
|
||||
vis: DEFAULT_VISIBILITY,
|
||||
ident,
|
||||
data,
|
||||
disr_expr: None,
|
||||
is_placeholder: false,
|
||||
};
|
||||
format_struct_struct(
|
||||
&context,
|
||||
&StructParts::from_variant(&variant),
|
||||
fields,
|
||||
shape.indent,
|
||||
None,
|
||||
)
|
||||
}
|
||||
ast::TyKind::AnonymousUnion(ref fields, recovered) => {
|
||||
let ident = Ident::new(
|
||||
kw::Union,
|
||||
mk_sp(self.span.lo(), self.span.lo() + BytePos(5)),
|
||||
);
|
||||
let data = ast::VariantData::Struct(fields.clone(), recovered);
|
||||
let variant = ast::Variant {
|
||||
attrs: AttrVec::new(),
|
||||
id: self.id,
|
||||
span: self.span,
|
||||
vis: DEFAULT_VISIBILITY,
|
||||
ident,
|
||||
data,
|
||||
disr_expr: None,
|
||||
is_placeholder: false,
|
||||
};
|
||||
format_struct_struct(
|
||||
&context,
|
||||
&StructParts::from_variant(&variant),
|
||||
fields,
|
||||
shape.indent,
|
||||
None,
|
||||
)
|
||||
}
|
||||
ast::TyKind::Path(ref q_self, ref path) => {
|
||||
rewrite_path(context, PathContext::Type, q_self.as_ref(), path, shape)
|
||||
}
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue