ActionAnalysisMetadata exposes whether loose headers are present. TransitiveVersionTable uses futures.

PiperOrigin-RevId: 208402465

1 files changed, 10 insertions, 0 deletions

diff --git a/src/main/java/com/google/devtools/build/lib/actions/ActionAnalysisMetadata.java b/src/main/java/com/google/devtools/build/lib/actions/ActionAnalysisMetadata.java
index 1e13cbec96..d86224ba3f 100644
--- a/src/main/java/com/google/devtools/build/lib/actions/ActionAnalysisMetadata.java
+++ b/src/main/java/com/google/devtools/build/lib/actions/ActionAnalysisMetadata.java
@@ -179,4 +179,14 @@ public interface ActionAnalysisMetadata {
       return this != NORMAL;
     }
   }
+
+  /**
+   * Whether this action has loose headers.
+   *
+   * <p>If this is true, top-down evaluation considers an action changed if any source files in
+   * package have changed.
+   */
+  default boolean hasLooseHeaders() {
+    return false;
+  }
 }