Replace path implementation.
Path and PathFragment have been replaced with String-based implementations. They are pretty similar, but each method is dissimilar enough that I did not feel sharing code was appropriate.
A summary of changes:
PATH
====
* Subsumes LocalPath (deleted, its tests repurposed)
* Use a simple string to back Path
* Path instances are no longer interned; Reference equality will no longer work
* Always normalized (same as before)
* Some operations will now be slower, like instance compares (which were previously just a reference check)
* Multiple identical paths will now consume more memory since they are not interned
PATH FRAGMENT
=============
* Use a simple string to back PathFragment
* No more segment arrays with interned strings
* Always normalized
* Remove isNormalized
* Replace some isNormalizied uses with containsUpLevelReferences() to check if path fragments try to escape their scope
* To check if user input is normalized, supply static methods on PathFragment to validate the string before constructing a PathFragment
* Because PathFragments are always normalized, we have to replace checks for literal "." from PathFragment#getPathString to PathFragment#getSafePathString. The latter returns "." for the empty string.
* The previous implementation supported efficient segment semantics (segment count, iterating over segments). This is now expensive since we do longer have a segment array.
ARTIFACT
========
* Remove Path instance. It is instead dynamically constructed on request. This is necessary to avoid this CL becoming a memory regression.
RELNOTES: None
PiperOrigin-RevId: 185062932
diff --git a/src/main/java/com/google/devtools/build/lib/cmdline/PackageIdentifier.java b/src/main/java/com/google/devtools/build/lib/cmdline/PackageIdentifier.java
index ac62a3a..2067b64 100644
--- a/src/main/java/com/google/devtools/build/lib/cmdline/PackageIdentifier.java
+++ b/src/main/java/com/google/devtools/build/lib/cmdline/PackageIdentifier.java
@@ -87,7 +87,7 @@
// TODO(ulfjack): Remove this when kchodorow@'s exec root rearrangement has been rolled out.
RepositoryName repository = RepositoryName.create("@" + tofind.getSegment(1));
return PackageIdentifier.create(repository, tofind.subFragment(2));
- } else if (!tofind.normalize().isNormalized()) {
+ } else if (tofind.containsUplevelReferences()) {
RepositoryName repository = RepositoryName.create("@" + tofind.getSegment(1));
return PackageIdentifier.create(repository, tofind.subFragment(2));
} else {
@@ -112,9 +112,6 @@
private PackageIdentifier(RepositoryName repository, PathFragment pkgName) {
this.repository = Preconditions.checkNotNull(repository);
- if (!pkgName.isNormalized()) {
- pkgName = pkgName.normalize();
- }
this.pkgName = Canonicalizer.fragments().intern(Preconditions.checkNotNull(pkgName));
this.hashCode = Objects.hash(repository, pkgName);
}
