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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 09:22:09 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 09:22:09 +0000
commit43a97878ce14b72f0981164f87f2e35e14151312 (patch)
tree620249daf56c0258faa40cbdcf9cfba06de2a846 /third_party/rust/syn/src/span.rs
parentInitial commit. (diff)
downloadfirefox-43a97878ce14b72f0981164f87f2e35e14151312.tar.xz
firefox-43a97878ce14b72f0981164f87f2e35e14151312.zip
Adding upstream version 110.0.1.upstream/110.0.1upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'third_party/rust/syn/src/span.rs')
-rw-r--r--third_party/rust/syn/src/span.rs67
1 files changed, 67 insertions, 0 deletions
diff --git a/third_party/rust/syn/src/span.rs b/third_party/rust/syn/src/span.rs
new file mode 100644
index 0000000000..27a7fe846d
--- /dev/null
+++ b/third_party/rust/syn/src/span.rs
@@ -0,0 +1,67 @@
+use proc_macro2::Span;
+
+pub trait IntoSpans<S> {
+ fn into_spans(self) -> S;
+}
+
+impl IntoSpans<[Span; 1]> for Span {
+ fn into_spans(self) -> [Span; 1] {
+ [self]
+ }
+}
+
+impl IntoSpans<[Span; 2]> for Span {
+ fn into_spans(self) -> [Span; 2] {
+ [self, self]
+ }
+}
+
+impl IntoSpans<[Span; 3]> for Span {
+ fn into_spans(self) -> [Span; 3] {
+ [self, self, self]
+ }
+}
+
+impl IntoSpans<[Span; 1]> for [Span; 1] {
+ fn into_spans(self) -> [Span; 1] {
+ self
+ }
+}
+
+impl IntoSpans<[Span; 2]> for [Span; 2] {
+ fn into_spans(self) -> [Span; 2] {
+ self
+ }
+}
+
+impl IntoSpans<[Span; 3]> for [Span; 3] {
+ fn into_spans(self) -> [Span; 3] {
+ self
+ }
+}
+
+#[cfg(feature = "parsing")]
+pub trait FromSpans: Sized {
+ fn from_spans(spans: &[Span]) -> Self;
+}
+
+#[cfg(feature = "parsing")]
+impl FromSpans for [Span; 1] {
+ fn from_spans(spans: &[Span]) -> Self {
+ [spans[0]]
+ }
+}
+
+#[cfg(feature = "parsing")]
+impl FromSpans for [Span; 2] {
+ fn from_spans(spans: &[Span]) -> Self {
+ [spans[0], spans[1]]
+ }
+}
+
+#[cfg(feature = "parsing")]
+impl FromSpans for [Span; 3] {
+ fn from_spans(spans: &[Span]) -> Self {
+ [spans[0], spans[1], spans[2]]
+ }
+}