Various additions to symbols, denotations, and elsewhere

1 files changed, 13 insertions, 0 deletions

diff --git a/src/dotty/tools/dotc/core/Decorators.scala b/src/dotty/tools/dotc/core/Decorators.scala
index ba3123358..d0ce3efe0 100644
--- a/src/dotty/tools/dotc/core/Decorators.scala
+++ b/src/dotty/tools/dotc/core/Decorators.scala
@@ -1,6 +1,9 @@
 package dotty.tools.dotc
 package core
 
+import annotation.tailrec
+import Symbols._
+
 import Contexts._, Names._
 
 object Decorators {
@@ -15,6 +18,16 @@ object Decorators {
       context.names.newTermName(s)
   }
 
+  implicit class SymbolIteratorDecorator(val it: Iterator[Symbol]) extends AnyVal {
+    final def findSymbol(p: Symbol => Boolean): Symbol = {
+      while (it.hasNext) {
+        val sym = it.next
+        if (p(sym)) return sym
+      }
+      NoSymbol
+    }
+  }
+
   final val MaxRecursions = 1000
 
   implicit class ListDecorator[T](val xs: List[T]) extends AnyVal {