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https://github.com/rust-lang/rust.git
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Auto merge of #105363 - WaffleLapkin:thin2win_box_next_argument, r=nnethercote
Shrink `rustc_parse_format::Piece` This makes both variants closer together in size (previously they were different by 208 bytes -- 16 vs 224). This may make things worse, but it's worth a try. r? `@nnethercote`
This commit is contained in:
commit
0d5573e6da
@ -4168,6 +4168,7 @@ dependencies = [
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name = "rustc_parse_format"
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version = "0.0.0"
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dependencies = [
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"rustc_data_structures",
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"rustc_lexer",
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]
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@ -333,7 +333,7 @@ pub fn make_format_args(
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parse::Piece::String(s) => {
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unfinished_literal.push_str(s);
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}
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parse::Piece::NextArgument(parse::Argument { position, position_span, format }) => {
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parse::Piece::NextArgument(box parse::Argument { position, position_span, format }) => {
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if !unfinished_literal.is_empty() {
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template.push(FormatArgsPiece::Literal(Symbol::intern(&unfinished_literal)));
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unfinished_literal.clear();
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@ -5,3 +5,4 @@ edition = "2021"
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[dependencies]
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rustc_lexer = { path = "../rustc_lexer" }
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rustc_data_structures = { path = "../rustc_data_structures" }
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@ -58,13 +58,13 @@ impl InnerOffset {
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/// A piece is a portion of the format string which represents the next part
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/// to emit. These are emitted as a stream by the `Parser` class.
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#[derive(Copy, Clone, Debug, PartialEq)]
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#[derive(Clone, Debug, PartialEq)]
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pub enum Piece<'a> {
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/// A literal string which should directly be emitted
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String(&'a str),
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/// This describes that formatting should process the next argument (as
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/// specified inside) for emission.
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NextArgument(Argument<'a>),
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NextArgument(Box<Argument<'a>>),
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}
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/// Representation of an argument specification.
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@ -244,7 +244,7 @@ impl<'a> Iterator for Parser<'a> {
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} else {
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self.suggest_positional_arg_instead_of_captured_arg(arg);
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}
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Some(NextArgument(arg))
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Some(NextArgument(Box::new(arg)))
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}
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}
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'}' => {
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@ -908,5 +908,9 @@ fn find_skips_from_snippet(
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(skips, true)
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}
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// Assert a reasonable size for `Piece`
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#[cfg(all(target_arch = "x86_64", target_pointer_width = "64"))]
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rustc_data_structures::static_assert_size!(Piece<'_>, 16);
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#[cfg(test)]
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mod tests;
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@ -76,51 +76,51 @@ fn invalid_precision() {
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fn format_nothing() {
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same(
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"{}",
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&[NextArgument(Argument {
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&[NextArgument(Box::new(Argument {
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position: ArgumentImplicitlyIs(0),
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position_span: InnerSpan { start: 2, end: 2 },
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format: fmtdflt(),
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})],
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}))],
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);
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}
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#[test]
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fn format_position() {
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same(
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"{3}",
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&[NextArgument(Argument {
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&[NextArgument(Box::new(Argument {
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position: ArgumentIs(3),
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position_span: InnerSpan { start: 2, end: 3 },
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format: fmtdflt(),
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})],
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}))],
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);
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}
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#[test]
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fn format_position_nothing_else() {
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same(
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"{3:}",
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&[NextArgument(Argument {
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&[NextArgument(Box::new(Argument {
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position: ArgumentIs(3),
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position_span: InnerSpan { start: 2, end: 3 },
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format: fmtdflt(),
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})],
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}))],
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);
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}
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#[test]
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fn format_named() {
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same(
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"{name}",
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&[NextArgument(Argument {
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&[NextArgument(Box::new(Argument {
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position: ArgumentNamed("name"),
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position_span: InnerSpan { start: 2, end: 6 },
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format: fmtdflt(),
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})],
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}))],
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)
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}
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#[test]
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fn format_type() {
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same(
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"{3:x}",
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&[NextArgument(Argument {
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&[NextArgument(Box::new(Argument {
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position: ArgumentIs(3),
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position_span: InnerSpan { start: 2, end: 3 },
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format: FormatSpec {
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@ -134,14 +134,14 @@ fn format_type() {
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ty: "x",
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ty_span: None,
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},
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})],
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}))],
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);
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}
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#[test]
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fn format_align_fill() {
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same(
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"{3:>}",
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&[NextArgument(Argument {
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&[NextArgument(Box::new(Argument {
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position: ArgumentIs(3),
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position_span: InnerSpan { start: 2, end: 3 },
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format: FormatSpec {
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@ -155,11 +155,11 @@ fn format_align_fill() {
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ty: "",
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ty_span: None,
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},
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})],
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}))],
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);
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same(
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"{3:0<}",
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&[NextArgument(Argument {
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&[NextArgument(Box::new(Argument {
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position: ArgumentIs(3),
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position_span: InnerSpan { start: 2, end: 3 },
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format: FormatSpec {
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@ -173,11 +173,11 @@ fn format_align_fill() {
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ty: "",
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ty_span: None,
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},
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})],
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}))],
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);
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same(
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"{3:*<abcd}",
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&[NextArgument(Argument {
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&[NextArgument(Box::new(Argument {
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position: ArgumentIs(3),
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position_span: InnerSpan { start: 2, end: 3 },
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format: FormatSpec {
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@ -191,14 +191,14 @@ fn format_align_fill() {
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ty: "abcd",
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ty_span: Some(InnerSpan::new(6, 10)),
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},
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})],
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}))],
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);
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}
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#[test]
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fn format_counts() {
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same(
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"{:10x}",
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&[NextArgument(Argument {
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&[NextArgument(Box::new(Argument {
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position: ArgumentImplicitlyIs(0),
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position_span: InnerSpan { start: 2, end: 2 },
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format: FormatSpec {
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@ -212,11 +212,11 @@ fn format_counts() {
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ty: "x",
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ty_span: None,
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},
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})],
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}))],
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);
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same(
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"{:10$.10x}",
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&[NextArgument(Argument {
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&[NextArgument(Box::new(Argument {
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position: ArgumentImplicitlyIs(0),
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position_span: InnerSpan { start: 2, end: 2 },
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format: FormatSpec {
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@ -230,11 +230,11 @@ fn format_counts() {
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ty: "x",
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ty_span: None,
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},
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})],
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}))],
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);
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same(
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"{1:0$.10x}",
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&[NextArgument(Argument {
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&[NextArgument(Box::new(Argument {
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position: ArgumentIs(1),
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position_span: InnerSpan { start: 2, end: 3 },
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format: FormatSpec {
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@ -248,11 +248,11 @@ fn format_counts() {
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ty: "x",
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ty_span: None,
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},
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})],
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}))],
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);
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same(
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"{:.*x}",
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&[NextArgument(Argument {
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&[NextArgument(Box::new(Argument {
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position: ArgumentImplicitlyIs(1),
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position_span: InnerSpan { start: 2, end: 2 },
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format: FormatSpec {
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@ -266,11 +266,11 @@ fn format_counts() {
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ty: "x",
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ty_span: None,
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},
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})],
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}))],
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);
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same(
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"{:.10$x}",
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&[NextArgument(Argument {
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&[NextArgument(Box::new(Argument {
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position: ArgumentImplicitlyIs(0),
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position_span: InnerSpan { start: 2, end: 2 },
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format: FormatSpec {
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@ -284,11 +284,11 @@ fn format_counts() {
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ty: "x",
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ty_span: None,
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},
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})],
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}))],
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);
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same(
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"{:a$.b$?}",
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&[NextArgument(Argument {
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&[NextArgument(Box::new(Argument {
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position: ArgumentImplicitlyIs(0),
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position_span: InnerSpan { start: 2, end: 2 },
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format: FormatSpec {
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@ -302,11 +302,11 @@ fn format_counts() {
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ty: "?",
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ty_span: None,
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},
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})],
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}))],
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);
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same(
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"{:.4}",
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&[NextArgument(Argument {
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&[NextArgument(Box::new(Argument {
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position: ArgumentImplicitlyIs(0),
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position_span: InnerSpan { start: 2, end: 2 },
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format: FormatSpec {
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@ -320,14 +320,14 @@ fn format_counts() {
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ty: "",
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ty_span: None,
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},
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})],
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}))],
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)
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}
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#[test]
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fn format_flags() {
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same(
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"{:-}",
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&[NextArgument(Argument {
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&[NextArgument(Box::new(Argument {
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position: ArgumentImplicitlyIs(0),
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position_span: InnerSpan { start: 2, end: 2 },
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format: FormatSpec {
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@ -341,11 +341,11 @@ fn format_flags() {
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ty: "",
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ty_span: None,
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},
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})],
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}))],
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);
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same(
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"{:+#}",
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&[NextArgument(Argument {
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&[NextArgument(Box::new(Argument {
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position: ArgumentImplicitlyIs(0),
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position_span: InnerSpan { start: 2, end: 2 },
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format: FormatSpec {
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@ -359,7 +359,7 @@ fn format_flags() {
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ty: "",
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ty_span: None,
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},
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})],
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}))],
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);
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}
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#[test]
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@ -368,7 +368,7 @@ fn format_mixture() {
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"abcd {3:x} efg",
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&[
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String("abcd "),
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NextArgument(Argument {
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NextArgument(Box::new(Argument {
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position: ArgumentIs(3),
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position_span: InnerSpan { start: 7, end: 8 },
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format: FormatSpec {
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@ -382,7 +382,7 @@ fn format_mixture() {
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ty: "x",
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ty_span: None,
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},
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}),
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})),
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String(" efg"),
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],
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);
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@ -391,18 +391,18 @@ fn format_mixture() {
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fn format_whitespace() {
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same(
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"{ }",
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&[NextArgument(Argument {
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&[NextArgument(Box::new(Argument {
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position: ArgumentImplicitlyIs(0),
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position_span: InnerSpan { start: 2, end: 3 },
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format: fmtdflt(),
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})],
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}))],
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);
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same(
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"{ }",
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&[NextArgument(Argument {
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&[NextArgument(Box::new(Argument {
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position: ArgumentImplicitlyIs(0),
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position_span: InnerSpan { start: 2, end: 4 },
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format: fmtdflt(),
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})],
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}))],
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);
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}
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