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Small fixes for get_unwrap lint

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This commit is contained in:
Devon Hollowood 2016-11-01 01:07:14 -07:00
parent cfc741405b
commit c5e270a1aa
1 changed files with 8 additions and 6 deletions
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14
clippy_lints/src/methods.rs
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@ -476,7 +476,7 @@ declare_lint! {
/// ```rust
/// let some_vec = vec![0, 1, 2, 3];
/// let last = some_vec.get(3).unwrap();
/// some_vec.get_mut(0).unwrap() = 1;
/// *some_vec.get_mut(0).unwrap() = 1;
/// ```
/// The correct use would be:
/// ```rust
@ -519,6 +519,7 @@ impl LintPass for Pass {
}
impl LateLintPass for Pass {
#[allow(cyclomatic_complexity)]
fn check_expr(&mut self, cx: &LateContext, expr: &hir::Expr) {
if in_macro(cx, expr.span) {
return;
@ -527,7 +528,12 @@ impl LateLintPass for Pass {
match expr.node {
hir::ExprMethodCall(name, _, ref args) => {
// Chain calls
if let Some(arglists) = method_chain_args(expr, &["unwrap"]) {
// GET_UNWRAP needs to be checked before general `UNWRAP` lints
if let Some(arglists) = method_chain_args(expr, &["get", "unwrap"]) {
lint_get_unwrap(cx, expr, arglists[0], false);
} else if let Some(arglists) = method_chain_args(expr, &["get_mut", "unwrap"]) {
lint_get_unwrap(cx, expr, arglists[0], true);
} else if let Some(arglists) = method_chain_args(expr, &["unwrap"]) {
lint_unwrap(cx, expr, arglists[0]);
} else if let Some(arglists) = method_chain_args(expr, &["ok", "expect"]) {
lint_ok_expect(cx, expr, arglists[0]);
@ -559,10 +565,6 @@ impl LateLintPass for Pass {
lint_iter_nth(cx, expr, arglists[0], false);
} else if let Some(arglists) = method_chain_args(expr, &["iter_mut", "nth"]) {
lint_iter_nth(cx, expr, arglists[0], true);
} else if let Some(arglists) = method_chain_args(expr, &["get", "unwrap"]) {
lint_get_unwrap(cx, expr, arglists[0], false);
} else if let Some(arglists) = method_chain_args(expr, &["get_mut", "unwrap"]) {
lint_get_unwrap(cx, expr, arglists[0], true);
} else if method_chain_args(expr, &["skip", "next"]).is_some() {
lint_iter_skip_next(cx, expr);
}