| if let ExprKind::Block(block, None) = expr.kind |
| && block.stmts.len() == 3 |
| && let StmtKind::Local(local) = block.stmts[0].kind |
| && let Some(init) = local.init |
| && let ExprKind::Lit(ref lit) = init.kind |
| && let LitKind::Int(42, LitIntType::Signed(IntTy::I32)) = lit.node |
| && let PatKind::Binding(BindingAnnotation::NONE, _, name, None) = local.pat.kind |
| && name.as_str() == "x" |
| && let StmtKind::Local(local1) = block.stmts[1].kind |
| && let Some(init1) = local1.init |
| && let ExprKind::Lit(ref lit1) = init1.kind |
| && let LitKind::Float(_, LitFloatType::Suffixed(FloatTy::F32)) = lit1.node |
| && let PatKind::Binding(BindingAnnotation::NONE, _, name1, None) = local1.pat.kind |
| && name1.as_str() == "_t" |
| && let StmtKind::Semi(e) = block.stmts[2].kind |
| && let ExprKind::Unary(UnOp::Neg, inner) = e.kind |
| && let ExprKind::Path(ref qpath) = inner.kind |
| && match_qpath(qpath, &["x"]) |
| && block.expr.is_none() |
| { |
| // report your lint here |
| } |
| if let ExprKind::Block(block, None) = expr.kind |
| && block.stmts.len() == 1 |
| && let StmtKind::Local(local) = block.stmts[0].kind |
| && let Some(init) = local.init |
| && let ExprKind::Call(func, args) = init.kind |
| && let ExprKind::Path(ref qpath) = func.kind |
| && match_qpath(qpath, &["String", "new"]) |
| && args.is_empty() |
| && let PatKind::Binding(BindingAnnotation::NONE, _, name, None) = local.pat.kind |
| && name.as_str() == "expr" |
| && let Some(trailing_expr) = block.expr |
| && let ExprKind::Call(func1, args1) = trailing_expr.kind |
| && let ExprKind::Path(ref qpath1) = func1.kind |
| && match_qpath(qpath1, &["drop"]) |
| && args1.len() == 1 |
| && let ExprKind::Path(ref qpath2) = args1[0].kind |
| && match_qpath(qpath2, &["expr"]) |
| { |
| // report your lint here |
| } |
| if let ExprKind::Closure(CaptureBy::Value { .. }, fn_decl, body_id, _, None) = expr.kind |
| && let FnRetTy::DefaultReturn(_) = fn_decl.output |
| && expr1 = &cx.tcx.hir().body(body_id).value |
| && let ExprKind::Closure(CaptureBy::Value { .. }, fn_decl1, body_id1, _, Some(Movability::Static)) = expr1.kind |
| && let FnRetTy::DefaultReturn(_) = fn_decl1.output |
| && expr2 = &cx.tcx.hir().body(body_id1).value |
| && let ExprKind::Block(block, None) = expr2.kind |
| && block.stmts.is_empty() |
| && block.expr.is_none() |
| { |
| // report your lint here |
| } |
