-use crate::utils::sugg::Sugg;
use if_chain::if_chain;
use rustc::hir::def::Def;
use rustc::hir::*;
use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
use rustc::{declare_tool_lint, lint_array};
+use rustc_errors::Applicability;
use syntax::ptr::P;
use crate::utils::paths::*;
+use crate::utils::sugg::Sugg;
use crate::utils::{match_def_path, match_type, span_lint_and_then, SpanlessEq};
-use rustc_errors::Applicability;
-/// **What it does:** Checks for expressions that could be replaced by the question mark operator
-///
-/// **Why is this bad?** Question mark usage is more idiomatic
-///
-/// **Known problems:** None
-///
-/// **Example:**
-/// ```rust
-/// if option.is_none() {
-/// return None;
-/// }
-/// ```
-///
-/// Could be written:
-///
-/// ```rust
-/// option?;
-/// ```
declare_clippy_lint! {
+ /// **What it does:** Checks for expressions that could be replaced by the question mark operator.
+ ///
+ /// **Why is this bad?** Question mark usage is more idiomatic.
+ ///
+ /// **Known problems:** None
+ ///
+ /// **Example:**
+ /// ```ignore
+ /// if option.is_none() {
+ /// return None;
+ /// }
+ /// ```
+ ///
+ /// Could be written:
+ ///
+ /// ```ignore
+ /// option?;
+ /// ```
pub QUESTION_MARK,
style,
"checks for expressions that could be replaced by the question mark operator"
}
impl Pass {
- /// Check if the given expression on the given context matches the following structure:
+ /// Checks if the given expression on the given context matches the following structure:
///
/// ```ignore
/// if option.is_none() {