if_chain! { if let ExprKind::DropTemps(expr1) = expr.kind; if let Some(higher::ForLoop { pat: pat, arg: arg, body: body, .. }) = higher::ForLoop::hir(expr1); if let PatKind::Binding(BindingAnnotation::Unannotated, _, name, None) = pat.kind; if name.as_str() == "y"; if let ExprKind::Struct(qpath, fields, None) = arg.kind; if matches!(qpath, QPath::LangItem(LangItem::Range, _)); if fields.len() == 2; if fields[0].ident.as_str() == "start"; if let ExprKind::Lit(ref lit) = fields[0].expr.kind; if let LitKind::Int(0, LitIntType::Unsuffixed) = lit.node; if fields[1].ident.as_str() == "end"; if let ExprKind::Lit(ref lit1) = fields[1].expr.kind; if let LitKind::Int(10, LitIntType::Unsuffixed) = lit1.node; if let ExprKind::Block(block, None) = body.kind; if block.stmts.len() == 1; if let StmtKind::Local(local) = block.stmts[0].kind; if let Some(init) = local.init; if let ExprKind::Path(ref qpath1) = init.kind; if match_qpath(qpath1, &["y"]); if let PatKind::Binding(BindingAnnotation::Unannotated, _, name1, None) = local.pat.kind; if name1.as_str() == "z"; if block.expr.is_none(); then { // report your lint here } } if_chain! { if let ExprKind::DropTemps(expr1) = expr.kind; if let Some(higher::ForLoop { pat: pat, arg: arg, body: body, .. }) = higher::ForLoop::hir(expr1); if let PatKind::Wild = pat.kind; if let ExprKind::Struct(qpath, fields, None) = arg.kind; if matches!(qpath, QPath::LangItem(LangItem::Range, _)); if fields.len() == 2; if fields[0].ident.as_str() == "start"; if let ExprKind::Lit(ref lit) = fields[0].expr.kind; if let LitKind::Int(0, LitIntType::Unsuffixed) = lit.node; if fields[1].ident.as_str() == "end"; if let ExprKind::Lit(ref lit1) = fields[1].expr.kind; if let LitKind::Int(10, LitIntType::Unsuffixed) = lit1.node; if let ExprKind::Block(block, None) = body.kind; if block.stmts.len() == 1; if let StmtKind::Semi(e) = block.stmts[0].kind; if let ExprKind::Break(destination, None) = e.kind; if destination.label.is_none(); if block.expr.is_none(); then { // report your lint here } } if_chain! { if let ExprKind::DropTemps(expr1) = expr.kind; if let Some(higher::ForLoop { pat: pat, arg: arg, body: body, .. }) = higher::ForLoop::hir(expr1); if let PatKind::Wild = pat.kind; if let ExprKind::Struct(qpath, fields, None) = arg.kind; if matches!(qpath, QPath::LangItem(LangItem::Range, _)); if fields.len() == 2; if fields[0].ident.as_str() == "start"; if let ExprKind::Lit(ref lit) = fields[0].expr.kind; if let LitKind::Int(0, LitIntType::Unsuffixed) = lit.node; if fields[1].ident.as_str() == "end"; if let ExprKind::Lit(ref lit1) = fields[1].expr.kind; if let LitKind::Int(10, LitIntType::Unsuffixed) = lit1.node; if let ExprKind::Block(block, None) = body.kind; if block.stmts.len() == 1; if let StmtKind::Semi(e) = block.stmts[0].kind; if let ExprKind::Break(destination, None) = e.kind; if let Some(label) = destination.label; if label.ident.as_str() == "'label"; if block.expr.is_none(); then { // report your lint here } } if_chain! { if let Some(higher::While { condition: condition, body: body }) = higher::While::hir(expr); if let ExprKind::Path(ref qpath) = condition.kind; if match_qpath(qpath, &["a"]); if let ExprKind::Block(block, None) = body.kind; if block.stmts.len() == 1; if let StmtKind::Semi(e) = block.stmts[0].kind; if let ExprKind::Break(destination, None) = e.kind; if destination.label.is_none(); if block.expr.is_none(); then { // report your lint here } } if_chain! { if let Some(higher::WhileLet { let_pat: let_pat, let_expr: let_expr, if_then: if_then }) = higher::WhileLet::hir(expr); if let PatKind::Lit(lit_expr) = let_pat.kind; if let ExprKind::Lit(ref lit) = lit_expr.kind; if let LitKind::Bool(true) = lit.node; if let ExprKind::Path(ref qpath) = let_expr.kind; if match_qpath(qpath, &["a"]); if let ExprKind::Block(block, None) = if_then.kind; if block.stmts.len() == 1; if let StmtKind::Semi(e) = block.stmts[0].kind; if let ExprKind::Break(destination, None) = e.kind; if destination.label.is_none(); if block.expr.is_none(); then { // report your lint here } } if_chain! { if let ExprKind::Loop(body, None, LoopSource::Loop, _) = expr.kind; if body.stmts.len() == 1; if let StmtKind::Semi(e) = body.stmts[0].kind; if let ExprKind::Break(destination, None) = e.kind; if destination.label.is_none(); if body.expr.is_none(); then { // report your lint here } }