Rename HasLength to RangeLength and move it under 'util'.

src/capture.rs

@@ -20,10 +20,11 @@ use crate::database::{
 };
 use crate::usb::{self, prelude::*};
 use crate::util::{
-    id::{Id, HasLength},
+    id::Id,
     rcu::SingleWriterRcu,
     vec_map::{Key, VecMap},
     Bytes,
+    RangeLength,
     fmt_count,
     fmt_size,
 };

src/item.rs

@@ -21,10 +21,7 @@ use crate::capture::{
     INVALID_EP_ID,
 };
 use crate::usb::{self, prelude::*, validate_packet};
-use crate::util::{
-    id::HasLength,
-    Bytes, fmt_count, fmt_size, titlecase
-};
+use crate::util::{Bytes, RangeLength, fmt_count, fmt_size, titlecase};
 
 pub trait ItemSource<Item, ViewMode> {
     /// Fetch an item from the source by index, relative to either the root

src/util/id.rs

@@ -44,22 +44,6 @@ impl<T> Debug for Id<T> {
     }
 }
 
-pub trait HasLength {
-   fn len(&self) -> u64;
-}
-
-impl<T> HasLength for Range<Id<T>> {
-   fn len(&self) -> u64 {
-      self.end.value - self.start.value
-   }
-}
-
-impl HasLength for Range<u64> {
-   fn len(&self) -> u64 {
-      self.end - self.start
-   }
-}
-
 impl<T> PartialEq<Id<T>> for Id<T> {
    fn eq(&self, other: &Id<T>) -> bool {
       self.value.eq(&other.value)

src/util/mod.rs

@@ -1,5 +1,7 @@
 //! Utility code that doesn't belong anywhere specific.
 
+use std::ops::Range;
+
 use anyhow::{Error, bail};
 use num_format::{Locale, ToFormattedString};
 use humansize::{SizeFormatter, BINARY};
@@ -9,6 +11,8 @@ pub mod id;
 pub mod vec_map;
 pub mod rcu;
 
+use id::Id;
+
 pub fn fmt_count(count: u64) -> String {
     count.to_formatted_string(&Locale::en)
 }
@@ -117,3 +121,19 @@ impl std::fmt::Display for Bytes<'_> {
         }
     }
 }
+
+pub trait RangeLength {
+   fn len(&self) -> u64;
+}
+
+impl<T> RangeLength for Range<Id<T>> {
+   fn len(&self) -> u64 {
+      self.end.value - self.start.value
+   }
+}
+
+impl RangeLength for Range<u64> {
+   fn len(&self) -> u64 {
+      self.end - self.start
+   }
+}