mirror of
https://github.com/rust-lang/rust-clippy
synced 2024-09-20 22:51:58 +00:00
40 lines
1.5 KiB
Text
40 lines
1.5 KiB
Text
if_chain! {
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if let ExprKind::Block(ref block) = expr.kind;
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if block.stmts.len() == 2;
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if let StmtKind::Local(ref local) = block.stmts[0].kind;
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if let Some(ref init) = local.init;
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if let ExprKind::Lit(ref lit) = init.kind;
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if let LitKind::Int(42, _) = lit.node;
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if let PatKind::Binding(BindingAnnotation::Unannotated, _, name, None) = local.pat.kind;
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if name.as_str() == "x";
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if let StmtKind::Semi(ref e, _) = block.stmts[1].kind
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if let ExprKind::Unary(UnOp::Neg, ref inner) = e.kind;
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if let ExprKind::Path(ref path) = inner.kind;
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if match_qpath(path, &["x"]);
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if block.expr.is_none();
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then {
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// report your lint here
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}
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}
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if_chain! {
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if let ExprKind::Block(ref block) = expr.kind;
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if block.stmts.len() == 1;
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if let StmtKind::Local(ref local) = block.stmts[0].kind;
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if let Some(ref init) = local.init;
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if let ExprKind::Call(ref func, ref args) = init.kind;
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if let ExprKind::Path(ref path) = func.kind;
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if match_qpath(path, &["String", "new"]);
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if args.len() == 0;
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if let PatKind::Binding(BindingAnnotation::Unannotated, _, name, None) = local.pat.kind;
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if name.as_str() == "expr";
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if let Some(trailing_expr) = &block.expr;
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if let ExprKind::Call(ref func1, ref args1) = trailing_expr.kind;
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if let ExprKind::Path(ref path1) = func1.kind;
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if match_qpath(path1, &["drop"]);
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if args1.len() == 1;
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if let ExprKind::Path(ref path2) = args1[0].kind;
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if match_qpath(path2, &["expr"]);
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then {
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// report your lint here
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}
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}
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