When a Skylark macro creates a native rule, it also sets the following rule attributes: generator_{function, name, location}

--
MOS_MIGRATED_REVID=101774632

1 files changed, 26 insertions, 0 deletions

diff --git a/src/main/java/com/google/devtools/build/lib/events/Location.java b/src/main/java/com/google/devtools/build/lib/events/Location.java
index 608d307c68..74b04a913a 100644
--- a/src/main/java/com/google/devtools/build/lib/events/Location.java
+++ b/src/main/java/com/google/devtools/build/lib/events/Location.java
@@ -291,4 +291,30 @@ public abstract class Location implements Serializable {
       return null;
     }
   };
+
+  /**
+   * Returns the location in the format "filename:line".
+   *
+   * <p>If such a location is not defined, this method returns an empty string.
+   */
+  public static String printPathAndLine(Location location) {
+    return (location == null) ? "" : location.printPathAndLine();
+  }
+
+  /**
+   * Returns this location in the format "filename:line".
+   */
+  public String printPathAndLine() {
+    StringBuilder builder = new StringBuilder();
+    PathFragment path = getPath();
+    if (path != null) {
+      builder.append(path.getPathString());
+    }
+
+    LineAndColumn position = getStartLineAndColumn();
+    if (position != null) {
+      builder.append(":").append(position.getLine());
+    }
+    return builder.toString();
+  }
 }