diff options
| -rw-r--r-- | src/tools/clippy/clippy_utils/src/macros.rs | 21 |
1 files changed, 17 insertions, 4 deletions
diff --git a/src/tools/clippy/clippy_utils/src/macros.rs b/src/tools/clippy/clippy_utils/src/macros.rs index e135bd9feee..c0e32068eca 100644 --- a/src/tools/clippy/clippy_utils/src/macros.rs +++ b/src/tools/clippy/clippy_utils/src/macros.rs @@ -533,6 +533,14 @@ struct FormatArgsValues<'tcx> { } impl<'tcx> FormatArgsValues<'tcx> { + fn new_empty(format_string_span: SpanData) -> Self { + Self { + value_args: Vec::new(), + pos_to_value_index: Vec::new(), + format_string_span, + } + } + fn new(args: &'tcx Expr<'tcx>, format_string_span: SpanData) -> Self { let mut pos_to_value_index = Vec::new(); let mut value_args = Vec::new(); @@ -997,12 +1005,13 @@ impl<'tcx> FormatArgsExpn<'tcx> { .find(|&name| matches!(name, sym::const_format_args | sym::format_args | sym::format_args_nl))?; let newline = macro_name == sym::format_args_nl; + // ::core::fmt::Arguments::new_const(pieces) // ::core::fmt::Arguments::new_v1(pieces, args) // ::core::fmt::Arguments::new_v1_formatted(pieces, args, fmt, _unsafe_arg) - if let ExprKind::Call(callee, [pieces, args, rest @ ..]) = expr.kind + if let ExprKind::Call(callee, [pieces, rest @ ..]) = expr.kind && let ExprKind::Path(QPath::TypeRelative(ty, seg)) = callee.kind && let TyKind::Path(QPath::LangItem(LangItem::FormatArguments, _, _)) = ty.kind - && matches!(seg.ident.as_str(), "new_v1" | "new_v1_formatted") + && matches!(seg.ident.as_str(), "new_const" | "new_v1" | "new_v1_formatted") { let format_string = FormatString::new(cx, pieces)?; @@ -1026,7 +1035,7 @@ impl<'tcx> FormatArgsExpn<'tcx> { return None; } - let positions = if let Some(fmt_arg) = rest.first() { + let positions = if let Some(fmt_arg) = rest.get(1) { // If the argument contains format specs, `new_v1_formatted(_, _, fmt, _)`, parse // them. @@ -1042,7 +1051,11 @@ impl<'tcx> FormatArgsExpn<'tcx> { })) }; - let values = FormatArgsValues::new(args, format_string.span.data()); + let values = if let Some(args) = rest.first() { + FormatArgsValues::new(args, format_string.span.data()) + } else { + FormatArgsValues::new_empty(format_string.span.data()) + }; let args = izip!(positions, parsed_args, parser.arg_places) .map(|(position, parsed_arg, arg_span)| { |