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Minor refactoring (walk_ptrs_ty_depth)

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Replace `walk_ptrs_ty_depth` with `walk_ptrs_ty` when the depth value is
ignored.
This commit is contained in:
Michael Wright 2018-03-21 20:10:10 +02:00
parent 2d01f42dde
commit 70d8f85e7e
2 changed files with 7 additions and 8 deletions
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8
clippy_lints/src/methods.rs
View file

@ -1034,7 +1034,7 @@ fn lint_clone_on_copy(cx: &LateContext, expr: &hir::Expr, arg: &hir::Expr, arg_t
} }
fn lint_clone_on_ref_ptr(cx: &LateContext, expr: &hir::Expr, arg: &hir::Expr) { fn lint_clone_on_ref_ptr(cx: &LateContext, expr: &hir::Expr, arg: &hir::Expr) {
let (obj_ty, _) = walk_ptrs_ty_depth(cx.tables.expr_ty(arg)); let obj_ty = walk_ptrs_ty(cx.tables.expr_ty(arg));
if let ty::TyAdt(_, subst) = obj_ty.sty { if let ty::TyAdt(_, subst) = obj_ty.sty {
let caller_type = if match_type(cx, obj_ty, &paths::RC) { let caller_type = if match_type(cx, obj_ty, &paths::RC) {
@ -1063,7 +1063,7 @@ fn lint_string_extend(cx: &LateContext, expr: &hir::Expr, args: &[hir::Expr]) {
let arg = &args[1]; let arg = &args[1];
if let Some(arglists) = method_chain_args(arg, &["chars"]) { if let Some(arglists) = method_chain_args(arg, &["chars"]) {
let target = &arglists[0][0]; let target = &arglists[0][0];
let (self_ty, _) = walk_ptrs_ty_depth(cx.tables.expr_ty(target)); let self_ty = walk_ptrs_ty(cx.tables.expr_ty(target));
let ref_str = if self_ty.sty == ty::TyStr { let ref_str = if self_ty.sty == ty::TyStr {
"" ""
} else if match_type(cx, self_ty, &paths::STRING) { } else if match_type(cx, self_ty, &paths::STRING) {
@ -1089,7 +1089,7 @@ fn lint_string_extend(cx: &LateContext, expr: &hir::Expr, args: &[hir::Expr]) {
} }
fn lint_extend(cx: &LateContext, expr: &hir::Expr, args: &[hir::Expr]) { fn lint_extend(cx: &LateContext, expr: &hir::Expr, args: &[hir::Expr]) {
let (obj_ty, _) = walk_ptrs_ty_depth(cx.tables.expr_ty(&args[0])); let obj_ty = walk_ptrs_ty(cx.tables.expr_ty(&args[0]));
if match_type(cx, obj_ty, &paths::STRING) { if match_type(cx, obj_ty, &paths::STRING) {
lint_string_extend(cx, expr, args); lint_string_extend(cx, expr, args);
} }
@ -1327,7 +1327,7 @@ fn derefs_to_slice(cx: &LateContext, expr: &hir::Expr, ty: Ty) -> Option<sugg::S
/// lint use of `unwrap()` for `Option`s and `Result`s /// lint use of `unwrap()` for `Option`s and `Result`s
fn lint_unwrap(cx: &LateContext, expr: &hir::Expr, unwrap_args: &[hir::Expr]) { fn lint_unwrap(cx: &LateContext, expr: &hir::Expr, unwrap_args: &[hir::Expr]) {
let (obj_ty, _) = walk_ptrs_ty_depth(cx.tables.expr_ty(&unwrap_args[0])); let obj_ty = walk_ptrs_ty(cx.tables.expr_ty(&unwrap_args[0]));
let mess = if match_type(cx, obj_ty, &paths::OPTION) { let mess = if match_type(cx, obj_ty, &paths::OPTION) {
Some((OPTION_UNWRAP_USED, "an Option", "None")) Some((OPTION_UNWRAP_USED, "an Option", "None"))

7
clippy_lints/src/open_options.rs
View file

@ -2,7 +2,7 @@ use rustc::hir::{Expr, ExprLit, ExprMethodCall};
use rustc::lint::*; use rustc::lint::*;
use syntax::ast::LitKind; use syntax::ast::LitKind;
use syntax::codemap::{Span, Spanned}; use syntax::codemap::{Span, Spanned};
use utils::{match_type, paths, span_lint, walk_ptrs_ty_depth}; use utils::{match_type, paths, span_lint, walk_ptrs_ty};
/// **What it does:** Checks for duplicate open options as well as combinations /// **What it does:** Checks for duplicate open options as well as combinations
/// that make no sense. /// that make no sense.
@ -22,7 +22,6 @@ declare_lint! {
"nonsensical combination of options for opening a file" "nonsensical combination of options for opening a file"
} }
#[derive(Copy, Clone)] #[derive(Copy, Clone)]
pub struct NonSensical; pub struct NonSensical;
@ -35,7 +34,7 @@ impl LintPass for NonSensical {
impl<'a, 'tcx> LateLintPass<'a, 'tcx> for NonSensical { impl<'a, 'tcx> LateLintPass<'a, 'tcx> for NonSensical {
fn check_expr(&mut self, cx: &LateContext<'a, 'tcx>, e: &'tcx Expr) { fn check_expr(&mut self, cx: &LateContext<'a, 'tcx>, e: &'tcx Expr) {
if let ExprMethodCall(ref path, _, ref arguments) = e.node { if let ExprMethodCall(ref path, _, ref arguments) = e.node {
let (obj_ty, _) = walk_ptrs_ty_depth(cx.tables.expr_ty(&arguments[0])); let obj_ty = walk_ptrs_ty(cx.tables.expr_ty(&arguments[0]));
if path.name == "open" && match_type(cx, obj_ty, &paths::OPEN_OPTIONS) { if path.name == "open" && match_type(cx, obj_ty, &paths::OPEN_OPTIONS) {
let mut options = Vec::new(); let mut options = Vec::new();
get_open_options(cx, &arguments[0], &mut options); get_open_options(cx, &arguments[0], &mut options);
@ -63,7 +62,7 @@ enum OpenOption {
fn get_open_options(cx: &LateContext, argument: &Expr, options: &mut Vec<(OpenOption, Argument)>) { fn get_open_options(cx: &LateContext, argument: &Expr, options: &mut Vec<(OpenOption, Argument)>) {
if let ExprMethodCall(ref path, _, ref arguments) = argument.node { if let ExprMethodCall(ref path, _, ref arguments) = argument.node {
let (obj_ty, _) = walk_ptrs_ty_depth(cx.tables.expr_ty(&arguments[0])); let obj_ty = walk_ptrs_ty(cx.tables.expr_ty(&arguments[0]));
// Only proceed if this is a call on some object of type std::fs::OpenOptions // Only proceed if this is a call on some object of type std::fs::OpenOptions
if match_type(cx, obj_ty, &paths::OPEN_OPTIONS) && arguments.len() >= 2 { if match_type(cx, obj_ty, &paths::OPEN_OPTIONS) && arguments.len() >= 2 {