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Mateusz Mikuła 2018-04-27 14:00:43 +02:00 committed by Mateusz Mikuła
parent 3b6440212d
commit cc7d66aa9c
10 changed files with 61 additions and 55 deletions
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2
CHANGELOG.md
View file

@ -615,6 +615,7 @@ All notable changes to this project will be documented in this file.
[`eq_op`]: https://rust-lang-nursery.github.io/rust-clippy/master/index.html#eq_op
[`erasing_op`]: https://rust-lang-nursery.github.io/rust-clippy/master/index.html#erasing_op
[`eval_order_dependence`]: https://rust-lang-nursery.github.io/rust-clippy/master/index.html#eval_order_dependence
[`excessive_precision`]: https://rust-lang-nursery.github.io/rust-clippy/master/index.html#excessive_precision
[`expl_impl_clone_on_copy`]: https://rust-lang-nursery.github.io/rust-clippy/master/index.html#expl_impl_clone_on_copy
[`explicit_counter_loop`]: https://rust-lang-nursery.github.io/rust-clippy/master/index.html#explicit_counter_loop
[`explicit_into_iter_loop`]: https://rust-lang-nursery.github.io/rust-clippy/master/index.html#explicit_into_iter_loop
@ -644,6 +645,7 @@ All notable changes to this project will be documented in this file.
[`inconsistent_digit_grouping`]: https://rust-lang-nursery.github.io/rust-clippy/master/index.html#inconsistent_digit_grouping
[`indexing_slicing`]: https://rust-lang-nursery.github.io/rust-clippy/master/index.html#indexing_slicing
[`ineffective_bit_mask`]: https://rust-lang-nursery.github.io/rust-clippy/master/index.html#ineffective_bit_mask
[`infallible_destructuring_match`]: https://rust-lang-nursery.github.io/rust-clippy/master/index.html#infallible_destructuring_match
[`infinite_iter`]: https://rust-lang-nursery.github.io/rust-clippy/master/index.html#infinite_iter
[`inline_always`]: https://rust-lang-nursery.github.io/rust-clippy/master/index.html#inline_always
[`inline_fn_without_body`]: https://rust-lang-nursery.github.io/rust-clippy/master/index.html#inline_fn_without_body

2
README.md
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@ -7,7 +7,7 @@
A collection of lints to catch common mistakes and improve your [Rust](https://github.com/rust-lang/rust) code.
[There are 255 lints included in this crate!](https://rust-lang-nursery.github.io/rust-clippy/master/index.html)
[There are 257 lints included in this crate!](https://rust-lang-nursery.github.io/rust-clippy/master/index.html)
We have a bunch of lint categories to allow you to choose how much clippy is supposed to ~~annoy~~ help you:

2
clippy_lints/src/functions.rs
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@ -5,7 +5,7 @@ use rustc::ty;
use rustc::hir::def::Def;
use std::collections::HashSet;
use syntax::ast;
use syntax::abi::Abi;
use rustc_target::spec::abi::Abi;
use syntax::codemap::Span;
use utils::{iter_input_pats, span_lint, type_is_unsafe_function};

3
clippy_lints/src/lib.rs
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@ -19,6 +19,7 @@
#[macro_use]
extern crate rustc;
extern crate rustc_typeck;
extern crate rustc_target;
extern crate syntax;
extern crate syntax_pos;
@ -516,6 +517,7 @@ pub fn register_plugins(reg: &mut rustc_plugin::Registry) {
eta_reduction::REDUNDANT_CLOSURE,
eval_order_dependence::DIVERGING_SUB_EXPRESSION,
eval_order_dependence::EVAL_ORDER_DEPENDENCE,
excessive_precision::EXCESSIVE_PRECISION,
explicit_write::EXPLICIT_WRITE,
format::USELESS_FORMAT,
formatting::POSSIBLE_MISSING_COMMA,
@ -692,6 +694,7 @@ pub fn register_plugins(reg: &mut rustc_plugin::Registry) {
enum_variants::MODULE_INCEPTION,
eq_op::OP_REF,
eta_reduction::REDUNDANT_CLOSURE,
excessive_precision::EXCESSIVE_PRECISION,
formatting::SUSPICIOUS_ASSIGNMENT_FORMATTING,
formatting::SUSPICIOUS_ELSE_FORMATTING,
if_let_redundant_pattern_matching::IF_LET_REDUNDANT_PATTERN_MATCHING,

2
clippy_lints/src/needless_pass_by_value.rs
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@ -6,7 +6,7 @@ use rustc::ty::{self, RegionKind, TypeFoldable};
use rustc::traits;
use rustc::middle::expr_use_visitor as euv;
use rustc::middle::mem_categorization as mc;
use syntax::abi::Abi;
use rustc_target::spec::abi::Abi;
use syntax::ast::NodeId;
use syntax_pos::Span;
use syntax::errors::DiagnosticBuilder;

2
clippy_lints/src/utils/mod.rs
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@ -8,7 +8,7 @@ use rustc::hir::map::Node;
use rustc::lint::{LateContext, Level, Lint, LintContext};
use rustc::session::Session;
use rustc::traits;
use rustc::ty::{self, Ty, TyCtxt, layout};
use rustc::ty::{self, Ty, TyCtxt, layout::{self, IntegerExt}};
use rustc_errors;
use std::borrow::Cow;
use std::env;

2
mini-macro/src/lib.rs
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@ -1,4 +1,4 @@
#![feature(proc_macro)]
#![feature(proc_macro, proc_macro_non_items)]
extern crate proc_macro;
use proc_macro::{TokenStream, quote};

2
tests/ui/infallible_destructuring_match.rs
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@ -1,4 +1,4 @@
#![feature(exhaustive_patterns)]
#![feature(exhaustive_patterns, never_type)]
#![allow(let_and_return)]
enum SingleVariantEnum {

1
tests/ui/result_map_unit_fn.rs
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@ -1,3 +1,4 @@
#![feature(never_type)]
#![warn(result_map_unit_fn)]
#![allow(unused)]

98
tests/ui/result_map_unit_fn.stderr
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@ -1,7 +1,7 @@
error: called `map(f)` on an Result value where `f` is a unit function
--> $DIR/result_map_unit_fn.rs:32:5
--> $DIR/result_map_unit_fn.rs:33:5
|
32 | x.field.map(do_nothing);
33 | x.field.map(do_nothing);
| ^^^^^^^^^^^^^^^^^^^^^^^-
| |
| help: try this: `if let Ok(x_field) = x.field { do_nothing(...) }`
@ -9,183 +9,183 @@ error: called `map(f)` on an Result value where `f` is a unit function
= note: `-D result-map-unit-fn` implied by `-D warnings`
error: called `map(f)` on an Result value where `f` is a unit function
--> $DIR/result_map_unit_fn.rs:34:5
--> $DIR/result_map_unit_fn.rs:35:5
|
34 | x.field.map(do_nothing);
35 | x.field.map(do_nothing);
| ^^^^^^^^^^^^^^^^^^^^^^^-
| |
| help: try this: `if let Ok(x_field) = x.field { do_nothing(...) }`
error: called `map(f)` on an Result value where `f` is a unit function
--> $DIR/result_map_unit_fn.rs:36:5
--> $DIR/result_map_unit_fn.rs:37:5
|
36 | x.field.map(diverge);
37 | x.field.map(diverge);
| ^^^^^^^^^^^^^^^^^^^^-
| |
| help: try this: `if let Ok(x_field) = x.field { diverge(...) }`
error: called `map(f)` on an Result value where `f` is a unit closure
--> $DIR/result_map_unit_fn.rs:42:5
--> $DIR/result_map_unit_fn.rs:43:5
|
42 | x.field.map(|value| x.do_result_nothing(value + captured));
43 | x.field.map(|value| x.do_result_nothing(value + captured));
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^-
| |
| help: try this: `if let Ok(value) = x.field { x.do_result_nothing(value + captured) }`
error: called `map(f)` on an Result value where `f` is a unit closure
--> $DIR/result_map_unit_fn.rs:44:5
--> $DIR/result_map_unit_fn.rs:45:5
|
44 | x.field.map(|value| { x.do_result_plus_one(value + captured); });
45 | x.field.map(|value| { x.do_result_plus_one(value + captured); });
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^-
| |
| help: try this: `if let Ok(value) = x.field { x.do_result_plus_one(value + captured); }`
error: called `map(f)` on an Result value where `f` is a unit closure
--> $DIR/result_map_unit_fn.rs:47:5
--> $DIR/result_map_unit_fn.rs:48:5
|
47 | x.field.map(|value| do_nothing(value + captured));
48 | x.field.map(|value| do_nothing(value + captured));
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^-
| |
| help: try this: `if let Ok(value) = x.field { do_nothing(value + captured) }`
error: called `map(f)` on an Result value where `f` is a unit closure
--> $DIR/result_map_unit_fn.rs:49:5
--> $DIR/result_map_unit_fn.rs:50:5
|
49 | x.field.map(|value| { do_nothing(value + captured) });
50 | x.field.map(|value| { do_nothing(value + captured) });
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^-
| |
| help: try this: `if let Ok(value) = x.field { do_nothing(value + captured) }`
error: called `map(f)` on an Result value where `f` is a unit closure
--> $DIR/result_map_unit_fn.rs:51:5
--> $DIR/result_map_unit_fn.rs:52:5
|
51 | x.field.map(|value| { do_nothing(value + captured); });
52 | x.field.map(|value| { do_nothing(value + captured); });
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^-
| |
| help: try this: `if let Ok(value) = x.field { do_nothing(value + captured); }`
error: called `map(f)` on an Result value where `f` is a unit closure
--> $DIR/result_map_unit_fn.rs:53:5
--> $DIR/result_map_unit_fn.rs:54:5
|
53 | x.field.map(|value| { { do_nothing(value + captured); } });
54 | x.field.map(|value| { { do_nothing(value + captured); } });
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^-
| |
| help: try this: `if let Ok(value) = x.field { do_nothing(value + captured); }`
error: called `map(f)` on an Result value where `f` is a unit closure
--> $DIR/result_map_unit_fn.rs:56:5
--> $DIR/result_map_unit_fn.rs:57:5
|
56 | x.field.map(|value| diverge(value + captured));
57 | x.field.map(|value| diverge(value + captured));
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^-
| |
| help: try this: `if let Ok(value) = x.field { diverge(value + captured) }`
error: called `map(f)` on an Result value where `f` is a unit closure
--> $DIR/result_map_unit_fn.rs:58:5
--> $DIR/result_map_unit_fn.rs:59:5
|
58 | x.field.map(|value| { diverge(value + captured) });
59 | x.field.map(|value| { diverge(value + captured) });
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^-
| |
| help: try this: `if let Ok(value) = x.field { diverge(value + captured) }`
error: called `map(f)` on an Result value where `f` is a unit closure
--> $DIR/result_map_unit_fn.rs:60:5
--> $DIR/result_map_unit_fn.rs:61:5
|
60 | x.field.map(|value| { diverge(value + captured); });
61 | x.field.map(|value| { diverge(value + captured); });
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^-
| |
| help: try this: `if let Ok(value) = x.field { diverge(value + captured); }`
error: called `map(f)` on an Result value where `f` is a unit closure
--> $DIR/result_map_unit_fn.rs:62:5
--> $DIR/result_map_unit_fn.rs:63:5
|
62 | x.field.map(|value| { { diverge(value + captured); } });
63 | x.field.map(|value| { { diverge(value + captured); } });
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^-
| |
| help: try this: `if let Ok(value) = x.field { diverge(value + captured); }`
error: called `map(f)` on an Result value where `f` is a unit closure
--> $DIR/result_map_unit_fn.rs:67:5
--> $DIR/result_map_unit_fn.rs:68:5
|
67 | x.field.map(|value| { let y = plus_one(value + captured); });
68 | x.field.map(|value| { let y = plus_one(value + captured); });
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^-
| |
| help: try this: `if let Ok(value) = x.field { let y = plus_one(value + captured); }`
error: called `map(f)` on an Result value where `f` is a unit closure
--> $DIR/result_map_unit_fn.rs:69:5
--> $DIR/result_map_unit_fn.rs:70:5
|
69 | x.field.map(|value| { plus_one(value + captured); });
70 | x.field.map(|value| { plus_one(value + captured); });
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^-
| |
| help: try this: `if let Ok(value) = x.field { plus_one(value + captured); }`
error: called `map(f)` on an Result value where `f` is a unit closure
--> $DIR/result_map_unit_fn.rs:71:5
--> $DIR/result_map_unit_fn.rs:72:5
|
71 | x.field.map(|value| { { plus_one(value + captured); } });
72 | x.field.map(|value| { { plus_one(value + captured); } });
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^-
| |
| help: try this: `if let Ok(value) = x.field { plus_one(value + captured); }`
error: called `map(f)` on an Result value where `f` is a unit closure
--> $DIR/result_map_unit_fn.rs:74:5
--> $DIR/result_map_unit_fn.rs:75:5
|
74 | x.field.map(|ref value| { do_nothing(value + captured) });
75 | x.field.map(|ref value| { do_nothing(value + captured) });
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^-
| |
| help: try this: `if let Ok(ref value) = x.field { do_nothing(value + captured) }`
error: called `map(f)` on an Result value where `f` is a unit closure
--> $DIR/result_map_unit_fn.rs:77:5
--> $DIR/result_map_unit_fn.rs:78:5
|
77 | x.field.map(|value| { do_nothing(value); do_nothing(value) });
78 | x.field.map(|value| { do_nothing(value); do_nothing(value) });
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^-
| |
| help: try this: `if let Ok(value) = x.field { ... }`
error: called `map(f)` on an Result value where `f` is a unit closure
--> $DIR/result_map_unit_fn.rs:79:5
--> $DIR/result_map_unit_fn.rs:80:5
|
79 | x.field.map(|value| if value > 0 { do_nothing(value); do_nothing(value) });
80 | x.field.map(|value| if value > 0 { do_nothing(value); do_nothing(value) });
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^-
| |
| help: try this: `if let Ok(value) = x.field { ... }`
error: called `map(f)` on an Result value where `f` is a unit closure
--> $DIR/result_map_unit_fn.rs:83:5
--> $DIR/result_map_unit_fn.rs:84:5
|
83 | x.field.map(|value| {
84 | x.field.map(|value| {
| _____^
| |_____|
| ||
84 | || do_nothing(value);
85 | || do_nothing(value)
86 | || });
85 | || do_nothing(value);
86 | || do_nothing(value)
87 | || });
| ||______^- help: try this: `if let Ok(value) = x.field { ... }`
| |_______|
|
error: called `map(f)` on an Result value where `f` is a unit closure
--> $DIR/result_map_unit_fn.rs:87:5
--> $DIR/result_map_unit_fn.rs:88:5
|
87 | x.field.map(|value| { do_nothing(value); do_nothing(value); });
88 | x.field.map(|value| { do_nothing(value); do_nothing(value); });
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^-
| |
| help: try this: `if let Ok(value) = x.field { ... }`
error: called `map(f)` on an Result value where `f` is a unit function
--> $DIR/result_map_unit_fn.rs:91:5
--> $DIR/result_map_unit_fn.rs:92:5
|
91 | "12".parse::<i32>().map(diverge);
92 | "12".parse::<i32>().map(diverge);
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^-
| |
| help: try this: `if let Ok(_) = "12".parse::<i32>() { diverge(...) }`
error: called `map(f)` on an Result value where `f` is a unit function
--> $DIR/result_map_unit_fn.rs:97:5
--> $DIR/result_map_unit_fn.rs:98:5
|
97 | y.map(do_nothing);
98 | y.map(do_nothing);
| ^^^^^^^^^^^^^^^^^-
| |
| help: try this: `if let Ok(_y) = y { do_nothing(...) }`