1 files changed, 21 insertions, 0 deletions
diff --git a/vaporize/TransientInterval.java b/vaporize/TransientInterval.java
new file mode 100644
index 0000000..3399092
--- /dev/null
+++ b/vaporize/TransientInterval.java
@@ -0,0 +1,21 @@
+package vaporize;
+
+import misc.*;
+
+class TransientInterval {
+
+    protected int first_def;
+    protected int last_use;
+
+    protected TransientInterval(int first_def, int last_use) {
+        this.first_def = first_def;
+        this.last_use = last_use;
+    }
+
+    @Override public boolean equals(Object other) {
+        TransientInterval o;
+        return (other instanceof TransientInterval) &&
+            (((o = (TransientInterval) other)).first_def == this.first_def);
+    }
+
+}