Runnig tests somehow

1 files changed, 19 insertions, 0 deletions

diff --git a/crates/libsyntax2/src/text_utils.rs b/crates/libsyntax2/src/text_utils.rs
new file mode 100644
index 000000000..e3d73888f
--- /dev/null
+++ b/crates/libsyntax2/src/text_utils.rs
@@ -0,0 +1,19 @@
+use {TextRange, TextUnit};
+
+pub fn contains_offset_nonstrict(range: TextRange, offset: TextUnit) -> bool {
+    range.start() <= offset && offset <= range.end()
+}
+
+pub fn is_subrange(range: TextRange, subrange: TextRange) -> bool {
+    range.start() <= subrange.start() && subrange.end() <= range.end()
+}
+
+pub fn intersect(r1: TextRange, r2: TextRange) -> Option<TextRange> {
+    let start = r1.start().max(r2.start());
+    let end = r1.end().min(r2.end());
+    if start <= end {
+        Some(TextRange::from_to(start, end))
+    } else {
+        None
+    }
+}