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if let StmtKind::Let(local) = stmt.kind
&& let Some(init) = local.init
&& let ExprKind::Closure { capture_clause: CaptureBy::Ref, fn_decl: fn_decl, body: body_id, closure_kind: ClosureKind::Closure, .. } = init.kind
&& let FnRetTy::DefaultReturn(_) = fn_decl.output
&& expr = &cx.tcx.hir_body(body_id).value
&& let ExprKind::Block(block, None) = expr.kind
&& block.stmts.len() == 1
&& let StmtKind::Semi(e) = block.stmts[0].kind
&& let ExprKind::Call(func, args) = e.kind
&& paths::STD_IO_STDIO__PRINT.matches_path(cx, func) // Add the path to `clippy_utils::paths` if needed
&& args.len() == 1
&& let ExprKind::Block(block1, None) = args[0].kind
&& block1.stmts.len() == 2
&& let StmtKind::Let(local1) = block1.stmts[0].kind
&& let Some(init1) = local1.init
&& let ExprKind::Tup(elements) = init1.kind
&& elements.len() == 1
&& let ExprKind::AddrOf(BorrowKind::Ref, Mutability::Not, inner) = elements[0].kind
&& let PatKind::Binding(BindingMode::NONE, _, name, None) = local1.pat.kind
&& name.as_str() == "args"
&& let StmtKind::Let(local2) = block1.stmts[1].kind
&& let Some(init2) = local2.init
&& let ExprKind::Array(elements1) = init2.kind
&& elements1.len() == 1
&& let ExprKind::Call(func1, args1) = elements1[0].kind
&& paths::CORE_FMT_RT_ARGUMENT_NEW_DISPLAY.matches_path(cx, func1) // Add the path to `clippy_utils::paths` if needed
&& args1.len() == 1
&& let ExprKind::Field(object, field_name) = args1[0].kind
&& field_name.as_str() == "0"
&& let PatKind::Binding(BindingMode::NONE, _, name1, None) = local2.pat.kind
&& name1.as_str() == "args"
&& let Some(trailing_expr) = block1.expr
&& let ExprKind::Call(func2, args2) = trailing_expr.kind
&& paths::CORE_FMT_RT_NEW_V1.matches_path(cx, func2) // Add the path to `clippy_utils::paths` if needed
&& args2.len() == 2
&& let ExprKind::AddrOf(BorrowKind::Ref, Mutability::Not, inner1) = args2[0].kind
&& let ExprKind::Array(elements2) = inner1.kind
&& elements2.len() == 2
&& let ExprKind::Lit(ref lit) = elements2[0].kind
&& let LitKind::Str(s, _) = lit.node
&& s.as_str() == ""
&& let ExprKind::Lit(ref lit1) = elements2[1].kind
&& let LitKind::Str(s1, _) = lit1.node
&& s1.as_str() == "\n"
&& let ExprKind::AddrOf(BorrowKind::Ref, Mutability::Not, inner2) = args2[1].kind
&& block.expr.is_none()
&& let PatKind::Binding(BindingMode::NONE, _, name2, None) = local.pat.kind
&& name2.as_str() == "print_text"
{
// report your lint here
}
|
