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Add new lint filter_map_identity

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This commit adds a new lint named `filter_map_identity`. This lint is
the same as `flat_map_identity` except that it checks for `filter_map`.

Closes #6643
This commit is contained in:
Yusuke Tanaka
2021-02-03 23:24:06 +09:00
parent a507c27660
commit a60c143fe0
7 changed files with 143 additions and 1 deletions
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3
clippy_lints/src/lib.rs
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@@ -742,6 +742,7 @@ pub fn register_plugins(store: &mut rustc_lint::LintStore, sess: &Session, conf:
&methods::EXPECT_USED,
&methods::FILETYPE_IS_FILE,
&methods::FILTER_MAP,
&methods::FILTER_MAP_IDENTITY,
&methods::FILTER_MAP_NEXT,
&methods::FILTER_NEXT,
&methods::FLAT_MAP_IDENTITY,
@@ -1531,6 +1532,7 @@ pub fn register_plugins(store: &mut rustc_lint::LintStore, sess: &Session, conf:
LintId::of(&methods::CLONE_DOUBLE_REF),
LintId::of(&methods::CLONE_ON_COPY),
LintId::of(&methods::EXPECT_FUN_CALL),
LintId::of(&methods::FILTER_MAP_IDENTITY),
LintId::of(&methods::FILTER_NEXT),
LintId::of(&methods::FLAT_MAP_IDENTITY),
LintId::of(&methods::FROM_ITER_INSTEAD_OF_COLLECT),
@@ -1838,6 +1840,7 @@ pub fn register_plugins(store: &mut rustc_lint::LintStore, sess: &Session, conf:
LintId::of(&matches::WILDCARD_IN_OR_PATTERNS),
LintId::of(&methods::BIND_INSTEAD_OF_MAP),
LintId::of(&methods::CLONE_ON_COPY),
LintId::of(&methods::FILTER_MAP_IDENTITY),
LintId::of(&methods::FILTER_NEXT),
LintId::of(&methods::FLAT_MAP_IDENTITY),
LintId::of(&methods::INSPECT_FOR_EACH),