| if let ExprKind::Block(block, None) = expr.kind | |
| && block.stmts.len() == 3 | |
| && let StmtKind::Let(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(BindingMode::NONE, _, name, None) = local.pat.kind | |
| && name.as_str() == "x" | |
| && let StmtKind::Let(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(BindingMode::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 | |
| && block.expr.is_none() | |
| { | |
| // report your lint here | |
| } | |
| if let ExprKind::Block(block, None) = expr.kind | |
| && block.stmts.len() == 1 | |
| && let StmtKind::Let(local) = block.stmts[0].kind | |
| && let Some(init) = local.init | |
| && let ExprKind::Call(func, args) = init.kind | |
| && func.res(cx).is_diag_item(cx, sym::string_new) | |
| && args.is_empty() | |
| && let PatKind::Binding(BindingMode::NONE, _, name, None) = local.pat.kind | |
| && name.as_str() == "expr" | |
| && let Some(trailing_expr) = block.expr | |
| && let ExprKind::Call(func1, args1) = trailing_expr.kind | |
| && func1.res(cx).is_diag_item(cx, sym::mem_drop) | |
| && args1.len() == 1 | |
| { | |
| // report your lint here | |
| } | |
| if let ExprKind::Closure { capture_clause: CaptureBy::Value { .. }, fn_decl: fn_decl, body: body_id, closure_kind: ClosureKind::CoroutineClosure(CoroutineDesugaring::Async), .. } = expr.kind | |
| && let FnRetTy::DefaultReturn(_) = fn_decl.output | |
| && expr1 = &cx.tcx.hir_body(body_id).value | |
| && let ExprKind::Closure { capture_clause: CaptureBy::Ref, fn_decl: fn_decl1, body: body_id1, closure_kind: ClosureKind::Coroutine(CoroutineKind::Desugared(CoroutineDesugaring::Async, CoroutineSource::Closure)), .. } = 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() | |
| && let Some(trailing_expr) = block.expr | |
| && let ExprKind::DropTemps(expr3) = trailing_expr.kind | |
| && let ExprKind::Block(block1, None) = expr3.kind | |
| && block1.stmts.is_empty() | |
| && block1.expr.is_none() | |
| { | |
| // report your lint here | |
| } |