if let Some(higher::ForLoop { pat: pat, arg: arg, body: body, .. }) = higher::ForLoop::hir(expr) && let PatKind::Binding(BindingMode::NONE, _, name, None) = pat.kind && name.as_str() == "y" && let ExprKind::Struct(qpath, fields, None) = arg.kind && matches!(qpath, QPath::LangItem(LangItem::Range, _)) && fields.len() == 2 && fields[0].ident.as_str() == "start" && let ExprKind::Lit(ref lit) = fields[0].expr.kind && let LitKind::Int(0, LitIntType::Unsuffixed) = lit.node && fields[1].ident.as_str() == "end" && let ExprKind::Lit(ref lit1) = fields[1].expr.kind && let LitKind::Int(10, LitIntType::Unsuffixed) = lit1.node && let ExprKind::Block(block, None) = body.kind && block.stmts.len() == 1 && let StmtKind::Local(local) = block.stmts[0].kind && let Some(init) = local.init && let ExprKind::Path(ref qpath1) = init.kind && match_qpath(qpath1, &["y"]) && let PatKind::Binding(BindingMode::NONE, _, name1, None) = local.pat.kind && name1.as_str() == "z" && block.expr.is_none() { // report your lint here } if let Some(higher::ForLoop { pat: pat, arg: arg, body: body, .. }) = higher::ForLoop::hir(expr) && let PatKind::Wild = pat.kind && let ExprKind::Struct(qpath, fields, None) = arg.kind && matches!(qpath, QPath::LangItem(LangItem::Range, _)) && fields.len() == 2 && fields[0].ident.as_str() == "start" && let ExprKind::Lit(ref lit) = fields[0].expr.kind && let LitKind::Int(0, LitIntType::Unsuffixed) = lit.node && fields[1].ident.as_str() == "end" && let ExprKind::Lit(ref lit1) = fields[1].expr.kind && let LitKind::Int(10, LitIntType::Unsuffixed) = lit1.node && let ExprKind::Block(block, None) = body.kind && block.stmts.len() == 1 && let StmtKind::Semi(e) = block.stmts[0].kind && let ExprKind::Break(destination, None) = e.kind && destination.label.is_none() && block.expr.is_none() { // report your lint here } if let Some(higher::ForLoop { pat: pat, arg: arg, body: body, .. }) = higher::ForLoop::hir(expr) && let PatKind::Wild = pat.kind && let ExprKind::Struct(qpath, fields, None) = arg.kind && matches!(qpath, QPath::LangItem(LangItem::Range, _)) && fields.len() == 2 && fields[0].ident.as_str() == "start" && let ExprKind::Lit(ref lit) = fields[0].expr.kind && let LitKind::Int(0, LitIntType::Unsuffixed) = lit.node && fields[1].ident.as_str() == "end" && let ExprKind::Lit(ref lit1) = fields[1].expr.kind && let LitKind::Int(10, LitIntType::Unsuffixed) = lit1.node && let ExprKind::Block(block, None) = body.kind && block.stmts.len() == 1 && let StmtKind::Semi(e) = block.stmts[0].kind && let ExprKind::Break(destination, None) = e.kind && let Some(label) = destination.label && label.ident.as_str() == "'label" && block.expr.is_none() { // report your lint here } if let Some(higher::While { condition: condition, body: body }) = higher::While::hir(expr) && let ExprKind::Path(ref qpath) = condition.kind && match_qpath(qpath, &["a"]) && let ExprKind::Block(block, None) = body.kind && block.stmts.len() == 1 && let StmtKind::Semi(e) = block.stmts[0].kind && let ExprKind::Break(destination, None) = e.kind && destination.label.is_none() && block.expr.is_none() { // report your lint here } if let Some(higher::WhileLet { let_pat: let_pat, let_expr: let_expr, if_then: if_then }) = higher::WhileLet::hir(expr) && let PatKind::Lit(lit_expr) = let_pat.kind && let ExprKind::Lit(ref lit) = lit_expr.kind && let LitKind::Bool(true) = lit.node && let ExprKind::Path(ref qpath) = let_expr.kind && match_qpath(qpath, &["a"]) && let ExprKind::Block(block, None) = if_then.kind && block.stmts.len() == 1 && let StmtKind::Semi(e) = block.stmts[0].kind && let ExprKind::Break(destination, None) = e.kind && destination.label.is_none() && block.expr.is_none() { // report your lint here } if let ExprKind::Loop(body, None, LoopSource::Loop, _) = expr.kind && body.stmts.len() == 1 && let StmtKind::Semi(e) = body.stmts[0].kind && let ExprKind::Break(destination, None) = e.kind && destination.label.is_none() && body.expr.is_none() { // report your lint here }