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Replace potentially ICEgen ast_ty_to_ty_cache

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This commit is contained in:
mcarton 2016-02-15 13:44:59 +01:00
parent d755b1ebe2
commit 570b963535
1 changed files with 10 additions and 13 deletions
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23
src/methods.rs
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@ -366,7 +366,7 @@ impl LateLintPass for MethodsPass {
return;
}
if let ItemImpl(_, _, _, None, ref ty, ref items) = item.node {
if let ItemImpl(_, _, _, None, _, ref items) = item.node {
for implitem in items {
let name = implitem.name;
if let ImplItemKind::Method(ref sig, _) = implitem.node {
@ -387,6 +387,7 @@ 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);
for &(ref conv, self_kinds) in &CONVENTIONS {
if conv.check(&name.as_str()) &&
@ -412,12 +413,13 @@ impl LateLintPass for MethodsPass {
if &name.as_str() == &"new" {
let returns_self = if let FunctionRetTy::Return(ref ret_ty) = sig.decl.output {
let ast_ty_to_ty_cache = cx.tcx.ast_ty_to_ty_cache.borrow();
let ty = ast_ty_to_ty_cache.get(&ty.id);
let ret_ty = ast_ty_to_ty_cache.get(&ret_ty.id);
match (ty, ret_ty) {
(Some(&ty), Some(&ret_ty)) => ret_ty.walk().any(|t| t == ty),
_ => false,
if let Some(&ret_ty) = ret_ty {
ret_ty.walk().any(|t| t == ty)
}
else {
false
}
}
else {
@ -983,12 +985,7 @@ fn is_bool(ty: &Ty) -> bool {
false
}
fn is_copy(cx: &LateContext, ast_ty: &Ty, item: &Item) -> bool {
match cx.tcx.ast_ty_to_ty_cache.borrow().get(&ast_ty.id) {
None => false,
Some(ty) => {
let env = ty::ParameterEnvironment::for_item(cx.tcx, item.id);
!ty.subst(cx.tcx, &env.free_substs).moves_by_default(&env, ast_ty.span)
}
}
fn is_copy<'a, 'ctx>(cx: &LateContext<'a, 'ctx>, ty: ty::Ty<'ctx>, item: &Item) -> bool {
let env = ty::ParameterEnvironment::for_item(cx.tcx, item.id);
!ty.subst(cx.tcx, &env.free_substs).moves_by_default(&env, item.span)
}