use crate::utils::ptr::get_spans;
use crate::utils::{
- get_trait_def_id, implements_trait, in_macro_or_desugar, is_copy, is_self, match_type, multispan_sugg, paths,
+ get_trait_def_id, implements_trait, is_copy, is_self, is_type_diagnostic_item, match_type, multispan_sugg, paths,
snippet, snippet_opt, span_lint_and_then,
};
use if_chain::if_chain;
use std::borrow::Cow;
use syntax::ast::Attribute;
use syntax::errors::DiagnosticBuilder;
-use syntax_pos::Span;
+use syntax_pos::{Span, Symbol};
declare_clippy_lint! {
/// **What it does:** Checks for functions taking arguments by value, but not
/// fn foo(v: Vec<i32>) {
/// assert_eq!(v.len(), 42);
/// }
+ /// ```
+ ///
+ /// ```rust
/// // should be
/// fn foo(v: &[i32]) {
/// assert_eq!(v.len(), 42);
span: Span,
hir_id: HirId,
) {
- if in_macro_or_desugar(span) {
+ if span.from_expansion() {
return;
}
let sized_trait = need!(cx.tcx.lang_items().sized_trait());
- let fn_def_id = cx.tcx.hir().local_def_id_from_hir_id(hir_id);
+ let fn_def_id = cx.tcx.hir().local_def_id(hir_id);
let preds = traits::elaborate_predicates(cx.tcx, cx.param_env.caller_bounds.to_vec())
.filter(|p| !p.is_global())
let fn_sig = cx.tcx.fn_sig(fn_def_id);
let fn_sig = cx.tcx.erase_late_bound_regions(&fn_sig);
- for (idx, ((input, &ty), arg)) in decl.inputs.iter().zip(fn_sig.inputs()).zip(&body.arguments).enumerate() {
+ for (idx, ((input, &ty), arg)) in decl.inputs.iter().zip(fn_sig.inputs()).zip(&body.params).enumerate() {
// All spans generated from a proc-macro invocation are the same...
if span == input.span {
return;
if_chain! {
if !is_self(arg);
- if !ty.is_mutable_pointer();
+ if !ty.is_mutable_ptr();
if !is_copy(cx, ty);
if !whitelisted_traits.iter().any(|&t| implements_trait(cx, ty, t, &[]));
if !implements_borrow_trait;
let deref_span = spans_need_deref.get(&canonical_id);
if_chain! {
- if match_type(cx, ty, &paths::VEC);
+ if is_type_diagnostic_item(cx, ty, Symbol::intern("vec_type"));
if let Some(clone_spans) =
get_spans(cx, Some(body.id()), idx, &[("clone", ".to_owned()")]);
if let TyKind::Path(QPath::Resolved(_, ref path)) = input.node;