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needless borrows found in clippy

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This commit is contained in:
Oliver Schneider 2016-04-26 17:05:39 +02:00
parent 87faaec7a3
commit 6edc6a13d4
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GPG key ID: 56D6EEA0FC67AC46
18 changed files with 35 additions and 35 deletions
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2
src/array_indexing.rs
View file

@ -67,7 +67,7 @@ impl LateLintPass for ArrayIndexing {
let size = ConstInt::Infer(size as u64);
// Index is a constant uint
let const_index = eval_const_expr_partial(cx.tcx, &index, ExprTypeChecked, None);
let const_index = eval_const_expr_partial(cx.tcx, index, ExprTypeChecked, None);
if let Ok(ConstVal::Integral(const_index)) = const_index {
if size <= const_index {
utils::span_lint(cx, OUT_OF_BOUNDS_INDEXING, e.span, "const index is out of bounds");

2
src/block_in_if_condition.rs
View file

@ -59,7 +59,7 @@ impl<'v> Visitor<'v> for ExVisitor<'v> {
}
};
if complex {
self.found_block = Some(&expr);
self.found_block = Some(expr);
return;
}
}

4
src/booleans.rs
View file

@ -221,7 +221,7 @@ fn suggest(cx: &LateContext, suggestion: &Bool, terminals: &[&Expr]) -> String {
s.push('(');
}
}
s.push_str(&snip(&terminals[n as usize]));
s.push_str(&snip(terminals[n as usize]));
if brackets {
if let ExprBinary(..) = terminals[n as usize].node {
s.push(')');
@ -319,7 +319,7 @@ impl<'a, 'tcx> NonminimalBoolVisitor<'a, 'tcx> {
}
let mut improvements = Vec::new();
'simplified: for suggestion in &simplified {
let simplified_stats = terminal_stats(&suggestion);
let simplified_stats = terminal_stats(suggestion);
let mut improvement = false;
for i in 0..32 {
// ignore any "simplifications" that end up requiring a terminal more often than in the original expression

2
src/consts.rs
View file

@ -164,7 +164,7 @@ impl PartialOrd for Constant {
}
}
(&Constant::Bool(ref l), &Constant::Bool(ref r)) => Some(l.cmp(r)),
(&Constant::Vec(ref l), &Constant::Vec(ref r)) => l.partial_cmp(&r),
(&Constant::Vec(ref l), &Constant::Vec(ref r)) => l.partial_cmp(r),
(&Constant::Repeat(ref lv, ref ls), &Constant::Repeat(ref rv, ref rs)) => {
match lv.partial_cmp(rv) {
Some(Equal) => Some(ls.cmp(rs)),

6
src/copies.rs
View file

@ -142,7 +142,7 @@ fn lint_match_arms(cx: &LateContext, expr: &Expr) {
};
if let ExprMatch(_, ref arms, MatchSource::Normal) = expr.node {
if let Some((i, j)) = search_same(&arms, hash, eq) {
if let Some((i, j)) = search_same(arms, hash, eq) {
span_note_and_lint(cx,
MATCH_SAME_ARMS,
j.body.span,
@ -256,8 +256,8 @@ fn search_same<T, Hash, Eq>(exprs: &[T], hash: Hash, eq: Eq) -> Option<(&T, &T)>
match map.entry(hash(expr)) {
Entry::Occupied(o) => {
for o in o.get() {
if eq(&o, expr) {
return Some((&o, expr));
if eq(o, expr) {
return Some((o, expr));
}
}
}

2
src/cyclomatic_complexity.rs
View file

@ -58,7 +58,7 @@ impl CyclomaticComplexity {
divergence: 0,
short_circuits: 0,
returns: 0,
tcx: &cx.tcx,
tcx: cx.tcx,
};
helper.visit_block(block);
let CCHelper { match_arms, divergence, short_circuits, returns, .. } = helper;

8
src/enum_variants.rs
View file

@ -68,9 +68,9 @@ impl EarlyLintPass for EnumVariantNames {
for var in &def.variants {
let name = var2str(var);
let pre_match = partial_match(&pre, &name);
let pre_match = partial_match(pre, &name);
pre = &pre[..pre_match];
let pre_camel = camel_case_until(&pre);
let pre_camel = camel_case_until(pre);
pre = &pre[..pre_camel];
while let Some((next, last)) = name[pre.len()..].chars().zip(pre.chars().rev()).next() {
if next.is_lowercase() {
@ -82,10 +82,10 @@ impl EarlyLintPass for EnumVariantNames {
}
}
let post_match = partial_rmatch(&post, &name);
let post_match = partial_rmatch(post, &name);
let post_end = post.len() - post_match;
post = &post[post_end..];
let post_camel = camel_case_from(&post);
let post_camel = camel_case_from(post);
post = &post[post_camel..];
}
let (what, value) = match (pre.is_empty(), post.is_empty()) {

2
src/len_zero.rs
View file

@ -184,7 +184,7 @@ fn has_is_empty(cx: &LateContext, expr: &Expr) -> bool {
})
}
let ty = &walk_ptrs_ty(&cx.tcx.expr_ty(expr));
let ty = &walk_ptrs_ty(cx.tcx.expr_ty(expr));
match ty.sty {
ty::TyTrait(_) => {
cx.tcx

2
src/lib.rs
View file

@ -141,7 +141,7 @@ pub fn plugin_registrar(reg: &mut Registry) {
("clippy.toml", false)
};
let (conf, errors) = utils::conf::read_conf(&file_name, must_exist);
let (conf, errors) = utils::conf::read_conf(file_name, must_exist);
// all conf errors are non-fatal, we just use the default conf in case of error
for error in errors {

4
src/lifetimes.rs
View file

@ -46,7 +46,7 @@ impl LintPass for LifetimePass {
impl LateLintPass for LifetimePass {
fn check_item(&mut self, cx: &LateContext, item: &Item) {
if let ItemFn(ref decl, _, _, _, ref generics, _) = item.node {
check_fn_inner(cx, decl, None, &generics, item.span);
check_fn_inner(cx, decl, None, generics, item.span);
}
}
@ -102,7 +102,7 @@ fn check_fn_inner(cx: &LateContext, decl: &FnDecl, slf: Option<&ExplicitSelf>, g
span,
"explicit lifetimes given in parameter types where they could be elided");
}
report_extra_lifetimes(cx, decl, &generics, slf);
report_extra_lifetimes(cx, decl, generics, slf);
}
fn could_use_elision<'a, T: Iterator<Item = &'a Lifetime>>(cx: &LateContext, func: &FnDecl, slf: Option<&ExplicitSelf>,

10
src/loops.rs
View file

@ -328,7 +328,7 @@ fn check_for_loop(cx: &LateContext, pat: &Pat, arg: &Expr, body: &Expr, expr: &E
/// Check for looping over a range and then indexing a sequence with it.
/// The iteratee must be a range literal.
fn check_for_loop_range(cx: &LateContext, pat: &Pat, arg: &Expr, body: &Expr, expr: &Expr) {
if let Some(UnsugaredRange { start: Some(ref start), ref end, .. }) = unsugar_range(&arg) {
if let Some(UnsugaredRange { start: Some(ref start), ref end, .. }) = unsugar_range(arg) {
// the var must be a single name
if let PatKind::Ident(_, ref ident, _) = pat.node {
let mut visitor = VarVisitor {
@ -363,7 +363,7 @@ fn check_for_loop_range(cx: &LateContext, pat: &Pat, arg: &Expr, body: &Expr, ex
};
let take: Cow<_> = if let Some(ref end) = *end {
if is_len_call(&end, &indexed) {
if is_len_call(end, &indexed) {
"".into()
} else {
format!(".take({})", snippet(cx, end.span, "..")).into()
@ -422,10 +422,10 @@ fn is_len_call(expr: &Expr, var: &Name) -> bool {
fn check_for_loop_reverse_range(cx: &LateContext, arg: &Expr, expr: &Expr) {
// if this for loop is iterating over a two-sided range...
if let Some(UnsugaredRange { start: Some(ref start), end: Some(ref end), limits }) = unsugar_range(&arg) {
if let Some(UnsugaredRange { start: Some(ref start), end: Some(ref end), limits }) = unsugar_range(arg) {
// ...and both sides are compile-time constant integers...
if let Ok(start_idx) = eval_const_expr_partial(&cx.tcx, start, ExprTypeChecked, None) {
if let Ok(end_idx) = eval_const_expr_partial(&cx.tcx, end, ExprTypeChecked, None) {
if let Ok(start_idx) = eval_const_expr_partial(cx.tcx, start, ExprTypeChecked, None) {
if let Ok(end_idx) = eval_const_expr_partial(cx.tcx, end, ExprTypeChecked, None) {
// ...and the start index is greater than the end index,
// this loop will never run. This is often confusing for developers
// who think that this will iterate from the larger value to the

6
src/matches.rs
View file

@ -461,8 +461,8 @@ pub fn overlapping<T>(ranges: &[SpannedRange<T>]) -> Option<(&SpannedRange<T>, &
let mut values = Vec::with_capacity(2 * ranges.len());
for r in ranges {
values.push(Kind::Start(r.node.0, &r));
values.push(Kind::End(r.node.1, &r));
values.push(Kind::Start(r.node.0, r));
values.push(Kind::End(r.node.1, r));
}
values.sort();
@ -475,7 +475,7 @@ pub fn overlapping<T>(ranges: &[SpannedRange<T>]) -> Option<(&SpannedRange<T>, &
}
}
(&Kind::End(a, _), &Kind::Start(b, _)) if a != b => (),
_ => return Some((&a.range(), &b.range())),
_ => return Some((a.range(), b.range())),
}
}

4
src/methods.rs
View file

@ -365,7 +365,7 @@ impl LateLintPass for MethodsPass {
lint_cstring_as_ptr(cx, expr, &arglists[0][0], &arglists[1][0]);
}
lint_or_fun_call(cx, expr, &name.node.as_str(), &args);
lint_or_fun_call(cx, expr, &name.node.as_str(), args);
let self_ty = cx.tcx.expr_ty_adjusted(&args[0]);
if args.len() == 1 && name.node.as_str() == "clone" {
@ -420,7 +420,7 @@ impl LateLintPass for MethodsPass {
// check conventions w.r.t. conversion method names and predicates
let ty = cx.tcx.lookup_item_type(cx.tcx.map.local_def_id(item.id)).ty;
let is_copy = is_copy(cx, &ty, &item);
let is_copy = is_copy(cx, ty, item);
for &(ref conv, self_kinds) in &CONVENTIONS {
if conv.check(&name.as_str()) &&
!self_kinds.iter().any(|k| k.matches(&sig.explicit_self.node, is_copy)) {

2
src/misc.rs
View file

@ -424,7 +424,7 @@ fn is_used(cx: &LateContext, expr: &Expr) -> bool {
match parent.node {
ExprAssign(_, ref rhs) |
ExprAssignOp(_, _, ref rhs) => **rhs == *expr,
_ => is_used(cx, &parent),
_ => is_used(cx, parent),
}
} else {
true

4
src/mut_reference.rs
View file

@ -39,13 +39,13 @@ impl LateLintPass for UnnecessaryMutPassed {
If this happened, the compiler would have \
aborted the compilation long ago");
if let ExprPath(_, ref path) = fn_expr.node {
check_arguments(cx, &arguments, function_type, &path.to_string());
check_arguments(cx, arguments, function_type, &path.to_string());
}
}
ExprMethodCall(ref name, _, ref arguments) => {
let method_call = MethodCall::expr(e.id);
let method_type = borrowed_table.method_map.get(&method_call).expect("This should never happen.");
check_arguments(cx, &arguments, method_type.ty, &name.node.as_str())
check_arguments(cx, arguments, method_type.ty, &name.node.as_str())
}
_ => (),
}

2
src/non_expressive_names.rs
View file

@ -249,7 +249,7 @@ impl EarlyLintPass for NonExpressiveNames {
let mut visitor = SimilarNamesLocalVisitor {
names: Vec::new(),
cx: cx,
lint: &self,
lint: self,
single_char_names: Vec::new(),
};
// initialize with function arguments

2
src/shadow.rs
View file

@ -278,7 +278,7 @@ fn check_expr(cx: &LateContext, expr: &Expr, bindings: &mut Vec<(Name, Span)>) {
let len = bindings.len();
for ref arm in arms {
for ref pat in &arm.pats {
check_pat(cx, &pat, &Some(&**init), pat.span, bindings);
check_pat(cx, pat, &Some(&**init), pat.span, bindings);
// This is ugly, but needed to get the right type
if let Some(ref guard) = arm.guard {
check_expr(cx, guard, bindings);

6
src/types.rs
View file

@ -910,7 +910,7 @@ fn upcast_comparison_bounds_err(cx: &LateContext, span: &Span, rel: comparisons:
if let Some(norm_rhs_val) = node_as_const_fullint(cx, rhs) {
if rel == Rel::Eq || rel == Rel::Ne {
if norm_rhs_val < lb || norm_rhs_val > ub {
err_upcast_comparison(cx, &span, lhs, rel == Rel::Ne);
err_upcast_comparison(cx, span, lhs, rel == Rel::Ne);
}
} else if match rel {
Rel::Lt => {
@ -929,7 +929,7 @@ fn upcast_comparison_bounds_err(cx: &LateContext, span: &Span, rel: comparisons:
}
Rel::Eq | Rel::Ne => unreachable!(),
} {
err_upcast_comparison(cx, &span, lhs, true)
err_upcast_comparison(cx, span, lhs, true)
} else if match rel {
Rel::Lt => {
if invert {
@ -947,7 +947,7 @@ fn upcast_comparison_bounds_err(cx: &LateContext, span: &Span, rel: comparisons:
}
Rel::Eq | Rel::Ne => unreachable!(),
} {
err_upcast_comparison(cx, &span, lhs, false)
err_upcast_comparison(cx, span, lhs, false)
}
}
}