Improve &-ptr printing #35611
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Improve &-ptr printing #35611
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r? @arielb1 (rust_highfive has picked a reviewer for you, use r? to override) |
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(adding Niko as reviewer since he said he wanted to be) |
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omg yessssssssssss |
| match tymut { | ||
| ty::TypeAndMut{ref ty, ref mutbl} => { | ||
| if ty.to_string() == "_" || //unknown type name, | ||
| ty.to_string().len() > 10 || //name longer than saying "reference", |
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This should really not call to_string twice, better save it.
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LGTM, my nitpicking notwithstanding 👍. |
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@eddyb - hehe, no worries. Refactored with some of your nits fixed. |
| } | ||
| } | ||
| } else { | ||
| format!("&{}", tymut_string) |
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Do we want to print &mut in the case of mutability?
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Oh, I see, we do, never mind.
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@bors r+ |
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📌 Commit 4224737 has been approved by |
Manishearth
added a commit
to Manishearth/rust
that referenced
this pull request
Aug 13, 2016
…atsakis
Improve &-ptr printing
This PR replaces printing `&-ptr` with a more readable description. To do so it uses a few heuristics.
If the name of the type is unknown, too long (longer than just saying "reference"), or too complex (a type with explicit lifetime annotations), it will instead opt to print either "reference" or "mutable reference", depending on the mutability of the type.
Before:
```
error[E0308]: mismatched types
--> src/test/compile-fail/issue-7061.rs:14:46
|
14 | fn foo(&'a mut self) -> Box<BarStruct> { self }
| ^^^^ expected box, found &-ptr
|
= note: expected type `Box<BarStruct>`
= note: found type `&'a mut BarStruct`
error: aborting due to previous error
```
After:
```
error[E0308]: mismatched types
--> src/test/compile-fail/issue-7061.rs:14:46
|
14 | fn foo(&'a mut self) -> Box<BarStruct> { self }
| ^^^^ expected box, found mutable reference
|
= note: expected type `Box<BarStruct>`
= note: found type `&'a mut BarStruct`
error: aborting due to previous error
```
|
@bors rollup |
eddyb
added a commit
to eddyb/rust
that referenced
this pull request
Aug 14, 2016
…atsakis
Improve &-ptr printing
This PR replaces printing `&-ptr` with a more readable description. To do so it uses a few heuristics.
If the name of the type is unknown, too long (longer than just saying "reference"), or too complex (a type with explicit lifetime annotations), it will instead opt to print either "reference" or "mutable reference", depending on the mutability of the type.
Before:
```
error[E0308]: mismatched types
--> src/test/compile-fail/issue-7061.rs:14:46
|
14 | fn foo(&'a mut self) -> Box<BarStruct> { self }
| ^^^^ expected box, found &-ptr
|
= note: expected type `Box<BarStruct>`
= note: found type `&'a mut BarStruct`
error: aborting due to previous error
```
After:
```
error[E0308]: mismatched types
--> src/test/compile-fail/issue-7061.rs:14:46
|
14 | fn foo(&'a mut self) -> Box<BarStruct> { self }
| ^^^^ expected box, found mutable reference
|
= note: expected type `Box<BarStruct>`
= note: found type `&'a mut BarStruct`
error: aborting due to previous error
```
eddyb
added a commit
to eddyb/rust
that referenced
this pull request
Aug 14, 2016
…atsakis
Improve &-ptr printing
This PR replaces printing `&-ptr` with a more readable description. To do so it uses a few heuristics.
If the name of the type is unknown, too long (longer than just saying "reference"), or too complex (a type with explicit lifetime annotations), it will instead opt to print either "reference" or "mutable reference", depending on the mutability of the type.
Before:
```
error[E0308]: mismatched types
--> src/test/compile-fail/issue-7061.rs:14:46
|
14 | fn foo(&'a mut self) -> Box<BarStruct> { self }
| ^^^^ expected box, found &-ptr
|
= note: expected type `Box<BarStruct>`
= note: found type `&'a mut BarStruct`
error: aborting due to previous error
```
After:
```
error[E0308]: mismatched types
--> src/test/compile-fail/issue-7061.rs:14:46
|
14 | fn foo(&'a mut self) -> Box<BarStruct> { self }
| ^^^^ expected box, found mutable reference
|
= note: expected type `Box<BarStruct>`
= note: found type `&'a mut BarStruct`
error: aborting due to previous error
```
bors
added a commit
that referenced
this pull request
Aug 14, 2016
Rollup of 30 pull requests - Successful merges: #34941, #35392, #35444, #35447, #35491, #35533, #35539, #35558, #35573, #35574, #35577, #35586, #35588, #35594, #35596, #35597, #35598, #35606, #35611, #35615, #35616, #35620, #35622, #35640, #35643, #35644, #35646, #35647, #35648, #35661 - Failed merges: #35395, #35415
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This PR replaces printing
&-ptrwith a more readable description. To do so it uses a few heuristics.If the name of the type is unknown, too long (longer than just saying "reference"), or too complex (a type with explicit lifetime annotations), it will instead opt to print either "reference" or "mutable reference", depending on the mutability of the type.
Before:
After: