59 lines
2.7 KiB
Plaintext
59 lines
2.7 KiB
Plaintext
if let ExprKind::Block(block, None) = expr.kind
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&& block.stmts.len() == 3
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&& let StmtKind::Local(local) = block.stmts[0].kind
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&& let Some(init) = local.init
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&& let ExprKind::Lit(ref lit) = init.kind
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&& let LitKind::Int(42, LitIntType::Signed(IntTy::I32)) = lit.node
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&& let PatKind::Binding(BindingMode::NONE, _, name, None) = local.pat.kind
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&& name.as_str() == "x"
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&& let StmtKind::Local(local1) = block.stmts[1].kind
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&& let Some(init1) = local1.init
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&& let ExprKind::Lit(ref lit1) = init1.kind
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&& let LitKind::Float(_, LitFloatType::Suffixed(FloatTy::F32)) = lit1.node
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&& let PatKind::Binding(BindingMode::NONE, _, name1, None) = local1.pat.kind
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&& name1.as_str() == "_t"
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&& let StmtKind::Semi(e) = block.stmts[2].kind
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&& let ExprKind::Unary(UnOp::Neg, inner) = e.kind
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&& let ExprKind::Path(ref qpath) = inner.kind
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&& match_qpath(qpath, &["x"])
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&& block.expr.is_none()
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{
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// report your lint here
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}
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if let ExprKind::Block(block, None) = expr.kind
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&& block.stmts.len() == 1
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&& let StmtKind::Local(local) = block.stmts[0].kind
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&& let Some(init) = local.init
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&& let ExprKind::Call(func, args) = init.kind
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&& let ExprKind::Path(ref qpath) = func.kind
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&& match_qpath(qpath, &["String", "new"])
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&& args.is_empty()
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&& let PatKind::Binding(BindingMode::NONE, _, name, None) = local.pat.kind
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&& name.as_str() == "expr"
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&& let Some(trailing_expr) = block.expr
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&& let ExprKind::Call(func1, args1) = trailing_expr.kind
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&& let ExprKind::Path(ref qpath1) = func1.kind
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&& match_qpath(qpath1, &["drop"])
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&& args1.len() == 1
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&& let ExprKind::Path(ref qpath2) = args1[0].kind
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&& match_qpath(qpath2, &["expr"])
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{
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// report your lint here
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}
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if let ExprKind::Closure { capture_clause: CaptureBy::Value { .. }, fn_decl: fn_decl, body: body_id, closure_kind: ClosureKind::CoroutineClosure(CoroutineDesugaring::Async), .. } = expr.kind
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&& let FnRetTy::DefaultReturn(_) = fn_decl.output
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&& expr1 = &cx.tcx.hir().body(body_id).value
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&& 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
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&& let FnRetTy::DefaultReturn(_) = fn_decl1.output
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&& expr2 = &cx.tcx.hir().body(body_id1).value
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&& let ExprKind::Block(block, None) = expr2.kind
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&& block.stmts.is_empty()
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&& let Some(trailing_expr) = block.expr
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&& let ExprKind::DropTemps(expr3) = trailing_expr.kind
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&& let ExprKind::Block(block1, None) = expr3.kind
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&& block1.stmts.is_empty()
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&& block1.expr.is_none()
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{
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// report your lint here
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}
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