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Use slices where a vector is not necessary
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ljedrz committed Jul 27, 2018
1 parent b18b9ed commit 1cca420
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Showing 15 changed files with 30 additions and 30 deletions.
4 changes: 2 additions & 2 deletions src/librustc/hir/lowering.rs
Expand Up @@ -746,7 +746,7 @@ impl<'a> LoweringContext<'a> {
// This is used to track which lifetimes have already been defined, and
// which are new in-band lifetimes that need to have a definition created
// for them.
fn with_in_scope_lifetime_defs<T, F>(&mut self, params: &Vec<GenericParam>, f: F) -> T
fn with_in_scope_lifetime_defs<T, F>(&mut self, params: &[GenericParam], f: F) -> T
where
F: FnOnce(&mut LoweringContext) -> T,
{
Expand Down Expand Up @@ -2237,7 +2237,7 @@ impl<'a> LoweringContext<'a> {

fn lower_generic_params(
&mut self,
params: &Vec<GenericParam>,
params: &[GenericParam],
add_bounds: &NodeMap<Vec<GenericBound>>,
mut itctx: ImplTraitContext,
) -> hir::HirVec<hir::GenericParam> {
Expand Down
2 changes: 1 addition & 1 deletion src/librustc/ich/hcx.rs
Expand Up @@ -396,7 +396,7 @@ impl<'a> HashStable<StableHashingContext<'a>> for Span {
pub fn hash_stable_trait_impls<'a, 'gcx, W, R>(
hcx: &mut StableHashingContext<'a>,
hasher: &mut StableHasher<W>,
blanket_impls: &Vec<DefId>,
blanket_impls: &[DefId],
non_blanket_impls: &HashMap<fast_reject::SimplifiedType, Vec<DefId>, R>)
where W: StableHasherResult,
R: std_hash::BuildHasher,
Expand Down
4 changes: 2 additions & 2 deletions src/librustc/traits/error_reporting.rs
Expand Up @@ -48,7 +48,7 @@ use syntax_pos::{DUMMY_SP, Span};

impl<'a, 'gcx, 'tcx> InferCtxt<'a, 'gcx, 'tcx> {
pub fn report_fulfillment_errors(&self,
errors: &Vec<FulfillmentError<'tcx>>,
errors: &[FulfillmentError<'tcx>],
body_id: Option<hir::BodyId>,
fallback_has_occurred: bool) {
#[derive(Debug)]
Expand Down Expand Up @@ -1015,7 +1015,7 @@ impl<'a, 'gcx, 'tcx> InferCtxt<'a, 'gcx, 'tcx> {
) -> DiagnosticBuilder<'tcx> {
let kind = if is_closure { "closure" } else { "function" };

let args_str = |arguments: &Vec<ArgKind>, other: &Vec<ArgKind>| {
let args_str = |arguments: &[ArgKind], other: &[ArgKind]| {
let arg_length = arguments.len();
let distinct = match &other[..] {
&[ArgKind::Tuple(..)] => true,
Expand Down
4 changes: 2 additions & 2 deletions src/librustc_borrowck/borrowck/gather_loans/move_error.rs
Expand Up @@ -68,7 +68,7 @@ pub struct GroupedMoveErrors<'tcx> {
move_to_places: Vec<MovePlace<'tcx>>
}

fn report_move_errors<'a, 'tcx>(bccx: &BorrowckCtxt<'a, 'tcx>, errors: &Vec<MoveError<'tcx>>) {
fn report_move_errors<'a, 'tcx>(bccx: &BorrowckCtxt<'a, 'tcx>, errors: &[MoveError<'tcx>]) {
let grouped_errors = group_errors_with_same_origin(errors);
for error in &grouped_errors {
let mut err = report_cannot_move_out_of(bccx, error.move_from.clone());
Expand Down Expand Up @@ -103,7 +103,7 @@ fn report_move_errors<'a, 'tcx>(bccx: &BorrowckCtxt<'a, 'tcx>, errors: &Vec<Move
}
}

fn group_errors_with_same_origin<'tcx>(errors: &Vec<MoveError<'tcx>>)
fn group_errors_with_same_origin<'tcx>(errors: &[MoveError<'tcx>])
-> Vec<GroupedMoveErrors<'tcx>> {
let mut grouped_errors = Vec::new();
for error in errors {
Expand Down
8 changes: 4 additions & 4 deletions src/librustc_driver/driver.rs
Expand Up @@ -1395,7 +1395,7 @@ fn generated_output_paths(

// Runs `f` on every output file path and returns the first non-None result, or None if `f`
// returns None for every file path.
fn check_output<F, T>(output_paths: &Vec<PathBuf>, f: F) -> Option<T>
fn check_output<F, T>(output_paths: &[PathBuf], f: F) -> Option<T>
where
F: Fn(&PathBuf) -> Option<T>,
{
Expand All @@ -1407,7 +1407,7 @@ where
None
}

pub fn output_contains_path(output_paths: &Vec<PathBuf>, input_path: &PathBuf) -> bool {
pub fn output_contains_path(output_paths: &[PathBuf], input_path: &PathBuf) -> bool {
let input_path = input_path.canonicalize().ok();
if input_path.is_none() {
return false;
Expand All @@ -1422,7 +1422,7 @@ pub fn output_contains_path(output_paths: &Vec<PathBuf>, input_path: &PathBuf) -
check_output(output_paths, check).is_some()
}

pub fn output_conflicts_with_dir(output_paths: &Vec<PathBuf>) -> Option<PathBuf> {
pub fn output_conflicts_with_dir(output_paths: &[PathBuf]) -> Option<PathBuf> {
let check = |output_path: &PathBuf| {
if output_path.is_dir() {
Some(output_path.clone())
Expand All @@ -1433,7 +1433,7 @@ pub fn output_conflicts_with_dir(output_paths: &Vec<PathBuf>) -> Option<PathBuf>
check_output(output_paths, check)
}

fn write_out_deps(sess: &Session, outputs: &OutputFilenames, out_filenames: &Vec<PathBuf>) {
fn write_out_deps(sess: &Session, outputs: &OutputFilenames, out_filenames: &[PathBuf]) {
// Write out dependency rules to the dep-info file if requested
if !sess.opts.output_types.contains_key(&OutputType::DepInfo) {
return;
Expand Down
2 changes: 1 addition & 1 deletion src/librustc_driver/profile/mod.rs
Expand Up @@ -62,7 +62,7 @@ struct StackFrame {
pub traces: Vec<trace::Rec>,
}

fn total_duration(traces: &Vec<trace::Rec>) -> Duration {
fn total_duration(traces: &[trace::Rec]) -> Duration {
let mut sum : Duration = Duration::new(0,0);
for t in traces.iter() { sum += t.dur_total; }
return sum
Expand Down
8 changes: 4 additions & 4 deletions src/librustc_driver/profile/trace.rs
Expand Up @@ -107,7 +107,7 @@ fn html_of_fraction(frac: f64) -> (String, String) {
else { (format!("< 0.1%", ), css) }
}

fn total_duration(traces: &Vec<Rec>) -> Duration {
fn total_duration(traces: &[Rec]) -> Duration {
let mut sum : Duration = Duration::new(0,0);
for t in traces.iter() {
sum += t.dur_total;
Expand All @@ -123,7 +123,7 @@ fn duration_div(nom: Duration, den: Duration) -> f64 {
to_nanos(nom) as f64 / to_nanos(den) as f64
}

fn write_traces_rec(file: &mut File, traces: &Vec<Rec>, total: Duration, depth: usize) {
fn write_traces_rec(file: &mut File, traces: &[Rec], total: Duration, depth: usize) {
for t in traces {
let (eff_text, eff_css_classes) = html_of_effect(&t.effect);
let (dur_text, dur_css_classes) = html_of_duration(&t.start, &t.dur_total);
Expand All @@ -149,7 +149,7 @@ fn write_traces_rec(file: &mut File, traces: &Vec<Rec>, total: Duration, depth:
}
}

fn compute_counts_rec(counts: &mut HashMap<String,QueryMetric>, traces: &Vec<Rec>) {
fn compute_counts_rec(counts: &mut HashMap<String,QueryMetric>, traces: &[Rec]) {
for t in traces.iter() {
match t.effect {
Effect::TimeBegin(ref msg) => {
Expand Down Expand Up @@ -218,7 +218,7 @@ pub fn write_counts(count_file: &mut File, counts: &mut HashMap<String,QueryMetr
}
}

pub fn write_traces(html_file: &mut File, counts_file: &mut File, traces: &Vec<Rec>) {
pub fn write_traces(html_file: &mut File, counts_file: &mut File, traces: &[Rec]) {
let capacity = traces.iter().fold(0, |acc, t| acc + 1 + t.extent.len());
let mut counts : HashMap<String, QueryMetric> = HashMap::with_capacity(capacity);
compute_counts_rec(&mut counts, traces);
Expand Down
10 changes: 5 additions & 5 deletions src/librustc_errors/emitter.rs
Expand Up @@ -749,7 +749,7 @@ impl EmitterWriter {
max
}

fn get_max_line_num(&mut self, span: &MultiSpan, children: &Vec<SubDiagnostic>) -> usize {
fn get_max_line_num(&mut self, span: &MultiSpan, children: &[SubDiagnostic]) -> usize {
let mut max = 0;

let primary = self.get_multispan_max_line_num(span);
Expand Down Expand Up @@ -954,7 +954,7 @@ impl EmitterWriter {

fn emit_message_default(&mut self,
msp: &MultiSpan,
msg: &Vec<(String, Style)>,
msg: &[(String, Style)],
code: &Option<DiagnosticId>,
level: &Level,
max_line_num_len: usize,
Expand Down Expand Up @@ -1317,10 +1317,10 @@ impl EmitterWriter {

fn emit_messages_default(&mut self,
level: &Level,
message: &Vec<(String, Style)>,
message: &[(String, Style)],
code: &Option<DiagnosticId>,
span: &MultiSpan,
children: &Vec<SubDiagnostic>,
children: &[SubDiagnostic],
suggestions: &[CodeSuggestion]) {
let max_line_num_len = if self.ui_testing {
ANONYMIZED_LINE_NUM.len()
Expand Down Expand Up @@ -1433,7 +1433,7 @@ fn overlaps(a1: &Annotation, a2: &Annotation, padding: usize) -> bool {
num_overlap(a1.start_col, a1.end_col + padding, a2.start_col, a2.end_col, false)
}

fn emit_to_destination(rendered_buffer: &Vec<Vec<StyledString>>,
fn emit_to_destination(rendered_buffer: &[Vec<StyledString>],
lvl: &Level,
dst: &mut Destination,
short_message: bool)
Expand Down
2 changes: 1 addition & 1 deletion src/librustc_mir/borrow_check/nll/facts.rs
Expand Up @@ -120,7 +120,7 @@ struct FactWriter<'w> {
impl<'w> FactWriter<'w> {
fn write_facts_to_path<T>(
&self,
rows: &Vec<T>,
rows: &[T],
file_name: &str,
) -> Result<(), Box<dyn Error>>
where
Expand Down
2 changes: 1 addition & 1 deletion src/librustc_mir/interpret/terminator/drop.rs
Expand Up @@ -78,7 +78,7 @@ impl<'a, 'mir, 'tcx, M: Machine<'mir, 'tcx>> EvalContext<'a, 'mir, 'tcx, M> {
self.eval_fn_call(
instance,
Some((Place::undef(), target)),
&vec![valty],
&[valty],
span,
fn_sig,
)
Expand Down
2 changes: 1 addition & 1 deletion src/librustc_mir/transform/uniform_array_move_out.rs
Expand Up @@ -222,7 +222,7 @@ impl RestoreSubsliceArrayMoveOut {
// indices is an integer interval. If all checks pass do the replacent.
// items are Vec<Option<LocalUse, index in source array, source place for init local>>
fn check_and_patch<'tcx>(candidate: Location,
items: &Vec<Option<(&LocalUse, u32, &Place<'tcx>)>>,
items: &[Option<(&LocalUse, u32, &Place<'tcx>)>],
opt_size: Option<u64>,
patch: &mut MirPatch<'tcx>,
dst_place: &Place<'tcx>) {
Expand Down
2 changes: 1 addition & 1 deletion src/librustc_passes/ast_validation.rs
Expand Up @@ -147,7 +147,7 @@ impl<'a> AstValidator<'a> {
}
}

fn check_late_bound_lifetime_defs(&self, params: &Vec<GenericParam>) {
fn check_late_bound_lifetime_defs(&self, params: &[GenericParam]) {
// Check only lifetime parameters are present and that the lifetime
// parameters that are present have no bounds.
let non_lt_param_spans: Vec<_> = params.iter().filter_map(|param| match param.kind {
Expand Down
2 changes: 1 addition & 1 deletion src/librustc_resolve/macros.rs
Expand Up @@ -783,7 +783,7 @@ impl<'a> Resolver<'a> {
}
};
let ident = Ident::new(Symbol::intern(name), span);
self.lookup_typo_candidate(&vec![ident], MacroNS, is_macro, span)
self.lookup_typo_candidate(&[ident], MacroNS, is_macro, span)
});

if let Some(suggestion) = suggestion {
Expand Down
6 changes: 3 additions & 3 deletions src/librustdoc/html/render.rs
Expand Up @@ -2690,7 +2690,7 @@ fn render_implementor(cx: &Context, implementor: &Impl, w: &mut fmt::Formatter,
for it in &implementor.inner_impl().items {
if let clean::TypedefItem(ref tydef, _) = it.inner {
write!(w, "<span class=\"where fmt-newline\"> ")?;
assoc_type(w, it, &vec![], Some(&tydef.type_), AssocItemLink::Anchor(None))?;
assoc_type(w, it, &[], Some(&tydef.type_), AssocItemLink::Anchor(None))?;
write!(w, ";</span>")?;
}
}
Expand Down Expand Up @@ -3040,7 +3040,7 @@ fn assoc_const(w: &mut fmt::Formatter,
}

fn assoc_type<W: fmt::Write>(w: &mut W, it: &clean::Item,
bounds: &Vec<clean::GenericBound>,
bounds: &[clean::GenericBound],
default: Option<&clean::Type>,
link: AssocItemLink) -> fmt::Result {
write!(w, "type <a href='{}' class=\"type\">{}</a>",
Expand Down Expand Up @@ -3749,7 +3749,7 @@ fn spotlight_decl(decl: &clean::FnDecl) -> Result<String, fmt::Error> {
for it in &impl_.items {
if let clean::TypedefItem(ref tydef, _) = it.inner {
out.push_str("<span class=\"where fmt-newline\"> ");
assoc_type(&mut out, it, &vec![],
assoc_type(&mut out, it, &[],
Some(&tydef.type_),
AssocItemLink::GotoSource(t_did, &FxHashSet()))?;
out.push_str(";</span>");
Expand Down
2 changes: 1 addition & 1 deletion src/libsyntax/print/pprust.rs
Expand Up @@ -3065,7 +3065,7 @@ impl<'a> State<'a> {
unsafety: ast::Unsafety,
decl: &ast::FnDecl,
name: Option<ast::Ident>,
generic_params: &Vec<ast::GenericParam>)
generic_params: &[ast::GenericParam])
-> io::Result<()> {
self.ibox(INDENT_UNIT)?;
if !generic_params.is_empty() {
Expand Down

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