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Get rid of rvalue_promotable_map method call

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This commit is contained in:
flip1995 2019-10-05 12:38:38 +02:00
parent b7d473503b
commit 3b23092b69
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GPG Key ID: 693086869D506637
2 changed files with 10 additions and 17 deletions
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15
clippy_lints/src/methods/mod.rs
View File

@ -21,7 +21,7 @@ use syntax::symbol::{sym, LocalInternedString, Symbol};
use crate::utils::usage::mutated_variables;
use crate::utils::{
get_arg_name, get_parent_expr, get_trait_def_id, has_iter_method, implements_trait, in_macro, is_copy,
is_ctor_function, is_expn_of, is_type_diagnostic_item, iter_input_pats, last_path_segment, match_def_path,
is_ctor_or_promotable_const_function, is_expn_of, is_type_diagnostic_item, iter_input_pats, last_path_segment, match_def_path,
match_qpath, match_trait_method, match_type, match_var, method_calls, method_chain_args, paths, remove_blocks,
return_ty, same_tys, single_segment_path, snippet, snippet_with_applicability, snippet_with_macro_callsite,
span_help_and_lint, span_lint, span_lint_and_sugg, span_lint_and_then, span_note_and_lint, sugg, walk_ptrs_ty,
@ -1281,22 +1281,13 @@ fn lint_or_fun_call<'a, 'tcx>(
fn visit_expr(&mut self, expr: &'tcx hir::Expr) {
let call_found = match &expr.kind {
// ignore enum and struct constructors
hir::ExprKind::Call(..) => !is_ctor_function(self.cx, expr),
hir::ExprKind::Call(..) => !is_ctor_or_promotable_const_function(self.cx, expr),
hir::ExprKind::MethodCall(..) => true,
_ => false,
};
if call_found {
// don't lint for constant values
let owner_def = self.cx.tcx.hir().get_parent_did(expr.hir_id);
let promotable = self
.cx
.tcx
.rvalue_promotable_map(owner_def)
.contains(&expr.hir_id.local_id);
if !promotable {
self.found |= true;
}
self.found |= true;
}
if !self.found {

12
clippy_lints/src/utils/mod.rs
View File

@ -803,13 +803,15 @@ pub fn is_copy<'a, 'tcx>(cx: &LateContext<'a, 'tcx>, ty: Ty<'tcx>) -> bool {
}
/// Checks if an expression is constructing a tuple-like enum variant or struct
pub fn is_ctor_function(cx: &LateContext<'_, '_>, expr: &Expr) -> bool {
pub fn is_ctor_or_promotable_const_function(cx: &LateContext<'_, '_>, expr: &Expr) -> bool {
if let ExprKind::Call(ref fun, _) = expr.kind {
if let ExprKind::Path(ref qp) = fun.kind {
return matches!(
cx.tables.qpath_res(qp, fun.hir_id),
def::Res::Def(DefKind::Variant, ..) | Res::Def(DefKind::Ctor(..), _)
);
let res = cx.tables.qpath_res(qp, fun.hir_id);
return match res {
def::Res::Def(DefKind::Variant, ..) | Res::Def(DefKind::Ctor(..), _) => true,
def::Res::Def(_, def_id) => cx.tcx.is_promotable_const_fn(def_id),
_ => false,
}
}
}
false