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Fix and improve internal lint checking for match_type usages

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* Check for `const`s and `static`s from external crates
* Check for `LangItem`s
* Handle inherent functions which have the same name as a field
* Also check the following functions:
    * `match_trait_method`
    * `match_def_path`
    * `is_expr_path_def_path`
    * `is_qpath_def_path`
* Handle checking for a constructor to a diagnostic item or `LangItem`
This commit is contained in:
Jason Newcomb
2021-11-11 14:15:01 -05:00
parent 8e7af6b429
commit 162aa19793
26 changed files with 539 additions and 181 deletions
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3
clippy_utils/src/paths.rs
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@@ -34,7 +34,6 @@ pub const DEFAULT_TRAIT_METHOD: [&str; 4] = ["core", "default", "Default", "defa
pub const DEREF_MUT_TRAIT_METHOD: [&str; 5] = ["core", "ops", "deref", "DerefMut", "deref_mut"];
/// Preferably use the diagnostic item `sym::deref_method` where possible
pub const DEREF_TRAIT_METHOD: [&str; 5] = ["core", "ops", "deref", "Deref", "deref"];
pub const DIR_BUILDER: [&str; 3] = ["std", "fs", "DirBuilder"];
pub const DISPLAY_TRAIT: [&str; 3] = ["core", "fmt", "Display"];
#[cfg(feature = "internal")]
pub const EARLY_CONTEXT: [&str; 2] = ["rustc_lint", "EarlyContext"];
@@ -64,8 +63,6 @@ pub const IDENT_AS_STR: [&str; 4] = ["rustc_span", "symbol", "Ident", "as_str"];
pub const INDEX: [&str; 3] = ["core", "ops", "Index"];
pub const INDEX_MUT: [&str; 3] = ["core", "ops", "IndexMut"];
pub const INSERT_STR: [&str; 4] = ["alloc", "string", "String", "insert_str"];
pub const IO_READ: [&str; 3] = ["std", "io", "Read"];
pub const IO_WRITE: [&str; 3] = ["std", "io", "Write"];
pub const ITER_COUNT: [&str; 6] = ["core", "iter", "traits", "iterator", "Iterator", "count"];
pub const ITER_EMPTY: [&str; 5] = ["core", "iter", "sources", "empty", "Empty"];
pub const ITER_REPEAT: [&str; 5] = ["core", "iter", "sources", "repeat", "repeat"];