+// Copyright 2014-2018 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+use crate::rustc::hir::*;
use crate::rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
-use crate::rustc::{declare_tool_lint, lint_array};
-use if_chain::if_chain;
use crate::rustc::ty;
-use crate::rustc::hir::*;
+use crate::rustc::{declare_tool_lint, lint_array};
use crate::utils::{is_copy, match_def_path, opt_def_id, paths, span_note_and_lint};
+use if_chain::if_chain;
/// **What it does:** Checks for calls to `std::mem::drop` with a reference
/// instead of an owned value.
///
/// **Example:**
/// ```rust
-/// let x:i32 = 42; // i32 implements Copy
+/// let x: i32 = 42; // i32 implements Copy
/// std::mem::drop(x) // A copy of x is passed to the function, leaving the
-/// // original unaffected
+/// // original unaffected
/// ```
declare_clippy_lint! {
pub DROP_COPY,
///
/// **Example:**
/// ```rust
-/// let x:i32 = 42; // i32 implements Copy
+/// let x: i32 = 42; // i32 implements Copy
/// std::mem::forget(x) // A copy of x is passed to the function, leaving the
-/// // original unaffected
+/// // original unaffected
/// ```
declare_clippy_lint! {
pub FORGET_COPY,
const FORGET_COPY_SUMMARY: &str = "calls to `std::mem::forget` with a value that implements Copy. \
Forgetting a copy leaves the original intact.";
-#[allow(missing_copy_implementations)]
pub struct Pass;
impl LintPass for Pass {