From 8ff5b3c00216392cd13dba61093c20501b377329 Mon Sep 17 00:00:00 2001 From: Mark Schaller Date: Wed, 29 Jul 2015 17:32:11 +0000 Subject: Adds TransitiveTraversalFunction that loads transitive deps of a target Unlike TransitiveTargetFunction, it does not return nested sets of the traversed targets. Used primarily for its side effects of loading the transitive targets into the graph. -- MOS_MIGRATED_REVID=99388411 --- .../lib/skyframe/TransitiveTraversalValue.java | 58 ++++++++++++++++++++++ 1 file changed, 58 insertions(+) create mode 100644 src/main/java/com/google/devtools/build/lib/skyframe/TransitiveTraversalValue.java (limited to 'src/main/java/com/google/devtools/build/lib/skyframe/TransitiveTraversalValue.java') diff --git a/src/main/java/com/google/devtools/build/lib/skyframe/TransitiveTraversalValue.java b/src/main/java/com/google/devtools/build/lib/skyframe/TransitiveTraversalValue.java new file mode 100644 index 0000000000..8216381994 --- /dev/null +++ b/src/main/java/com/google/devtools/build/lib/skyframe/TransitiveTraversalValue.java @@ -0,0 +1,58 @@ +// Copyright 2014 Google Inc. All rights reserved. +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. +package com.google.devtools.build.lib.skyframe; + +import com.google.devtools.build.lib.concurrent.ThreadSafety.Immutable; +import com.google.devtools.build.lib.concurrent.ThreadSafety.ThreadSafe; +import com.google.devtools.build.lib.packages.NoSuchTargetException; +import com.google.devtools.build.lib.syntax.Label; +import com.google.devtools.build.skyframe.SkyKey; +import com.google.devtools.build.skyframe.SkyValue; + +import javax.annotation.Nullable; + +/** + * A transitive target reference that, when built in skyframe, loads the entire + * transitive closure of a target. Contains no information about the targets traversed. + */ +@Immutable +@ThreadSafe +public class TransitiveTraversalValue implements SkyValue { + + @Nullable + private final NoSuchTargetException errorLoadingTarget; + + static final TransitiveTraversalValue SUCCESSFUL_TRANSITIVE_TRAVERSAL_VALUE = + new TransitiveTraversalValue(null); + + private TransitiveTraversalValue(@Nullable NoSuchTargetException errorLoadingTarget) { + this.errorLoadingTarget = errorLoadingTarget; + } + + static TransitiveTraversalValue unsuccessfulTransitiveTraversal( + NoSuchTargetException errorLoadingTarget) { + return new TransitiveTraversalValue(errorLoadingTarget); + } + + /** Returns the error, if any, from loading the target. */ + @Nullable + public NoSuchTargetException getErrorLoadingTarget() { + return errorLoadingTarget; + } + + @ThreadSafe + public static SkyKey key(Label label) { + return new SkyKey(SkyFunctions.TRANSITIVE_TRAVERSAL, label); + } +} -- cgit v1.2.3