use rustc::hir::map::NodeItem;
use rustc::hir::QPath;
use rustc::lint::*;
+use rustc::{declare_lint, lint_array};
+use if_chain::if_chain;
use rustc::ty;
use syntax::ast::NodeId;
use syntax::codemap::Span;
use syntax_pos::MultiSpan;
-use utils::{match_qpath, match_type, paths, snippet_opt, span_lint, span_lint_and_then, walk_ptrs_hir_ty};
-use utils::ptr::get_spans;
+use crate::utils::{match_qpath, match_type, paths, snippet_opt, span_lint, span_lint_and_then, walk_ptrs_hir_ty};
+use crate::utils::ptr::get_spans;
/// **What it does:** This lint checks for function arguments of type `&String`
/// or `&Vec` unless the references are mutable. It will also suggest you
impl<'a, 'tcx> LateLintPass<'a, 'tcx> for PointerPass {
fn check_item(&mut self, cx: &LateContext<'a, 'tcx>, item: &'tcx Item) {
- if let ItemFn(ref decl, _, _, _, _, body_id) = item.node {
+ if let ItemKind::Fn(ref decl, _, _, body_id) = item.node {
check_fn(cx, decl, item.id, Some(body_id));
}
}
fn check_impl_item(&mut self, cx: &LateContext<'a, 'tcx>, item: &'tcx ImplItem) {
if let ImplItemKind::Method(ref sig, body_id) = item.node {
if let Some(NodeItem(it)) = cx.tcx.hir.find(cx.tcx.hir.get_parent(item.id)) {
- if let ItemImpl(_, _, _, _, Some(_), _, _) = it.node {
+ if let ItemKind::Impl(_, _, _, _, Some(_), _, _) = it.node {
return; // ignore trait impls
}
}
}
fn check_expr(&mut self, cx: &LateContext<'a, 'tcx>, expr: &'tcx Expr) {
- if let ExprBinary(ref op, ref l, ref r) = expr.node {
- if (op.node == BiEq || op.node == BiNe) && (is_null_path(l) || is_null_path(r)) {
+ if let ExprKind::Binary(ref op, ref l, ref r) = expr.node {
+ if (op.node == BinOpKind::Eq || op.node == BinOpKind::Ne) && (is_null_path(l) || is_null_path(r)) {
span_lint(
cx,
CMP_NULL,
for (idx, (arg, ty)) in decl.inputs.iter().zip(fn_ty.inputs()).enumerate() {
if let ty::TyRef(
_,
- ty::TypeAndMut {
- ty,
- mutbl: MutImmutable,
- },
+ ty,
+ MutImmutable
) = ty.sty
{
if match_type(cx, ty, &paths::VEC) {
let mut ty_snippet = None;
if_chain! {
- if let TyPath(QPath::Resolved(_, ref path)) = walk_ptrs_hir_ty(arg).node;
- if let Some(&PathSegment{parameters: Some(ref parameters), ..}) = path.segments.last();
- if parameters.types.len() == 1;
+ if let TyKind::Path(QPath::Resolved(_, ref path)) = walk_ptrs_hir_ty(arg).node;
+ if let Some(&PathSegment{args: Some(ref parameters), ..}) = path.segments.last();
then {
- ty_snippet = snippet_opt(cx, parameters.types[0].span);
+ let types: Vec<_> = parameters.args.iter().filter_map(|arg| match arg {
+ GenericArg::Type(ty) => Some(ty),
+ _ => None,
+ }).collect();
+ if types.len() == 1 {
+ ty_snippet = snippet_opt(cx, types[0].span);
+ }
}
};
if let Some(spans) = get_spans(cx, opt_body_id, idx, &[("clone", ".to_owned()")]) {
}
} else if match_type(cx, ty, &paths::COW) {
if_chain! {
- if let TyRptr(_, MutTy { ref ty, ..} ) = arg.node;
- if let TyPath(ref path) = ty.node;
+ if let TyKind::Rptr(_, MutTy { ref ty, ..} ) = arg.node;
+ if let TyKind::Path(ref path) = ty.node;
if let QPath::Resolved(None, ref pp) = *path;
if let [ref bx] = *pp.segments;
- if let Some(ref params) = bx.parameters;
+ if let Some(ref params) = bx.args;
if !params.parenthesized;
- if let [ref inner] = *params.types;
+ if let Some(inner) = params.args.iter().find_map(|arg| match arg {
+ GenericArg::Type(ty) => Some(ty),
+ GenericArg::Lifetime(_) => None,
+ });
then {
let replacement = snippet_opt(cx, inner.span);
if let Some(r) = replacement {
}
fn get_rptr_lm(ty: &Ty) -> Option<(&Lifetime, Mutability, Span)> {
- if let Ty_::TyRptr(ref lt, ref m) = ty.node {
+ if let TyKind::Rptr(ref lt, ref m) = ty.node {
Some((lt, m.mutbl, ty.span))
} else {
None
}
fn is_null_path(expr: &Expr) -> bool {
- if let ExprCall(ref pathexp, ref args) = expr.node {
+ if let ExprKind::Call(ref pathexp, ref args) = expr.node {
if args.is_empty() {
- if let ExprPath(ref path) = pathexp.node {
+ if let ExprKind::Path(ref path) = pathexp.node {
return match_qpath(path, &paths::PTR_NULL) || match_qpath(path, &paths::PTR_NULL_MUT);
}
}