Introduce Path#readSymbolicLinkUnchecked, intended to only be used when the caller already knows the path is a symlink, and use this new method throughout the codebase.

--
MOS_MIGRATED_REVID=103229983

1 files changed, 11 insertions, 0 deletions

diff --git a/src/main/java/com/google/devtools/build/lib/vfs/FileSystem.java b/src/main/java/com/google/devtools/build/lib/vfs/FileSystem.java
index fc5a9e81e3..bf74b96f62 100644
--- a/src/main/java/com/google/devtools/build/lib/vfs/FileSystem.java
+++ b/src/main/java/com/google/devtools/build/lib/vfs/FileSystem.java
@@ -478,6 +478,17 @@ public abstract class FileSystem {
   protected abstract PathFragment readSymbolicLink(Path path) throws IOException;
 
   /**
+   * Returns the target of a symbolic link, under the assumption that the given path is indeed a
+   * symbolic link (this assumption permits efficient implementations). See
+   * {@link Path#readSymbolicLinkUnchecked} for specification.
+   *
+   * @throws IOException if the contents of the link could not be read for any reason.
+   */
+  protected PathFragment readSymbolicLinkUnchecked(Path path) throws IOException {
+    return readSymbolicLink(path);
+  }
+
+  /**
    * Returns true iff {@code path} denotes an existing file of any kind. See
    * {@link Path#exists(Symlinks)} for specification.
    */