about summary refs log tree commit diff
path: root/src
diff options
context:
space:
mode:
authorNiko Matsakis <niko@alum.mit.edu>2015-08-21 10:54:24 -0400
committerNiko Matsakis <niko@alum.mit.edu>2015-08-21 10:55:04 -0400
commit36809bf260dd3951fd9ffaa14556246abb17e5ea (patch)
treec48eecd583f0fb679b3cf863a36996b5e33c5023 /src
parentd5b679b23de78728fc99ab96cada036a0f91c7a2 (diff)
clarify diagonal arrows
Diffstat (limited to 'src')
-rw-r--r--src/librustc_data_structures/transitive_relation.rs3
1 files changed, 3 insertions, 0 deletions
diff --git a/src/librustc_data_structures/transitive_relation.rs b/src/librustc_data_structures/transitive_relation.rs
index 384e94fcc5e..311ca054e87 100644
--- a/src/librustc_data_structures/transitive_relation.rs
+++ b/src/librustc_data_structures/transitive_relation.rs
@@ -112,6 +112,7 @@ impl<T:Debug+PartialEq> TransitiveRelation<T> {
     /// b -> b1 ---+
     ///
     /// // returns Some(x), which is not LUB (there is none)
+    /// // diagonal edges run left-to-right
     /// a -> a1 -> x
     ///   \/       ^
     ///   /\       |
@@ -400,6 +401,7 @@ fn mubs_best_choice_scc() {
 
 #[test]
 fn bub_crisscross() {
+    // diagonal edges run left-to-right
     // a -> a1 -> x
     //   \/       ^
     //   /\       |
@@ -419,6 +421,7 @@ fn bub_crisscross() {
 
 #[test]
 fn bub_crisscross_more() {
+    // diagonal edges run left-to-right
     // a -> a1 -> a2 -> a3 -> x
     //   \/    \/             ^
     //   /\    /\             |