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Use span of impl/trait in len_without_is_empty error message, rather than the span of the len method

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This commit is contained in:
Phil Ellison 2017-02-19 15:14:30 +00:00
parent 8a227c7577
commit 2dd45b7317
2 changed files with 37 additions and 20 deletions
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4
clippy_lints/src/len_zero.rs
View file

@ -107,7 +107,7 @@ fn check_trait_items(cx: &LateContext, item: &Item, trait_items: &[TraitItemRef]
if cx.access_levels.is_exported(i.id.node_id) {
span_lint(cx,
LEN_WITHOUT_IS_EMPTY,
i.span,
item.span,
&format!("trait `{}` has a `len` method but no `is_empty` method", item.name));
}
}
@ -146,7 +146,7 @@ fn check_impl_items(cx: &LateContext, item: &Item, impl_items: &[ImplItemRef]) {
span_lint(cx,
LEN_WITHOUT_IS_EMPTY,
i.span,
item.span,
&format!("item `{}` has a public `len` method but {} `is_empty` method", ty, is_empty));
}
}

53
tests/ui/len_zero.stderr
View file

@ -1,11 +1,13 @@
error: item `PubOne` has a public `len` method but no corresponding `is_empty` method
--> $DIR/len_zero.rs:10:5
--> $DIR/len_zero.rs:9:1
|
10 | pub fn len(self: &Self) -> isize {
| _____^ starting here...
9 | impl PubOne {
| _^ starting here...
10 | | pub fn len(self: &Self) -> isize {
11 | | 1
12 | | }
| |_____^ ...ending here
13 | | }
| |_^ ...ending here
|
note: lint level defined here
--> $DIR/len_zero.rs:4:9
@ -14,28 +16,43 @@ note: lint level defined here
| ^^^^^^^^^^^^^^^^^^^^
error: trait `PubTraitsToo` has a `len` method but no `is_empty` method
--> $DIR/len_zero.rs:32:5
--> $DIR/len_zero.rs:31:1
|
32 | fn len(self: &Self) -> isize;
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
31 | pub trait PubTraitsToo {
| _^ starting here...
32 | | fn len(self: &Self) -> isize;
33 | | }
| |_^ ...ending here
error: item `HasIsEmpty` has a public `len` method but a private `is_empty` method
--> $DIR/len_zero.rs:66:5
--> $DIR/len_zero.rs:65:1
|
66 | pub fn len(self: &Self) -> isize {
| _____^ starting here...
65 | impl HasIsEmpty {
| _^ starting here...
66 | | pub fn len(self: &Self) -> isize {
67 | | 1
68 | | }
| |_____^ ...ending here
69 | |
70 | | fn is_empty(self: &Self) -> bool {
71 | | false
72 | | }
73 | | }
| |_^ ...ending here
error: item `HasWrongIsEmpty` has a public `len` method but no corresponding `is_empty` method
--> $DIR/len_zero.rs:95:5
|
95 | pub fn len(self: &Self) -> isize {
| _____^ starting here...
96 | | 1
97 | | }
| |_____^ ...ending here
--> $DIR/len_zero.rs:94:1
|
94 | impl HasWrongIsEmpty {
| _^ starting here...
95 | | pub fn len(self: &Self) -> isize {
96 | | 1
97 | | }
98 | |
99 | | pub fn is_empty(self: &Self, x : u32) -> bool {
100 | | false
101 | | }
102 | | }
| |_^ ...ending here
error: length comparison to zero
--> $DIR/len_zero.rs:106:8