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// Copyright 2014 The Bazel Authors. 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.analysis;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableSet;
import com.google.devtools.build.lib.actions.Action;
import com.google.devtools.build.lib.actions.ActionRegistry;
import com.google.devtools.build.lib.actions.Artifact;
import com.google.devtools.build.lib.actions.MiddlemanFactory;
import com.google.devtools.build.lib.actions.Root;
import com.google.devtools.build.lib.analysis.buildinfo.BuildInfoFactory.BuildInfoKey;
import com.google.devtools.build.lib.events.EventHandler;
import com.google.devtools.build.lib.vfs.PathFragment;
import com.google.devtools.build.skyframe.SkyFunction;
/**
* The set of services that are provided to {@link ConfiguredTarget} objects
* during initialization.
*/
public interface AnalysisEnvironment extends ActionRegistry {
/**
* Returns a callback to be used in this build for reporting analysis errors.
*/
EventHandler getEventHandler();
/**
* Returns whether any errors were reported to this instance.
*/
boolean hasErrors();
/**
* Returns the artifact for the derived file {@code rootRelativePath}.
*
* <p><b>DO NOT USE</b> in rule implementations. Use
* {@link RuleContext#getPackageRelativeArtifact(PathFragment, Root)} or
* {@link RuleContext#getUniqueDirectoryArtifact(String, PathFragment, Root)}, or, if there is
* really no other way, {@link RuleContext#getShareableArtifact(PathFragment, Root)} instead.
*
* <p>Creates the artifact if necessary and sets the root of that artifact to {@code root}.
*
* <p>This method can create artifacts anywhere in the output tree, thus making it possible for
* artifacts generated by two different rules to clash. To avoid this, use the artifact creation
* method on {@link RuleContext} mentioned above.
*/
Artifact getDerivedArtifact(PathFragment rootRelativePath, Root root);
/**
* Returns an artifact for the derived file {@code rootRelativePath} whose changes do not cause
* a rebuild.
*
* <p>Creates the artifact if necessary and sets the root of that artifact to {@code root}.
*
* <p>This is useful for files that store data that changes very frequently (e.g. current time)
* but does not substantially affect the result of the build.
*/
Artifact getConstantMetadataArtifact(PathFragment rootRelativePath,
Root root);
/**
* Returns the artifact for the derived file {@code rootRelativePath},
* creating it if necessary, and setting the root of that artifact to
* {@code root}. The artifact will represent the output directory of a {@code Fileset}.
*/
Artifact getFilesetArtifact(PathFragment rootRelativePath, Root root);
/**
* Returns the artifact for the specified tool.
*/
Artifact getEmbeddedToolArtifact(String embeddedPath);
/**
* Returns the middleman factory associated with the build.
*/
// TODO(bazel-team): remove this method and replace it with delegate methods.
MiddlemanFactory getMiddlemanFactory();
/**
* Returns the generating action for the given local artifact.
*
* If the artifact was created in another analysis environment (e.g. by a different configured
* target instance) or the artifact is a source artifact, it returns null.
*/
Action getLocalGeneratingAction(Artifact artifact);
/**
* Returns the actions that were registered so far with this analysis environment, that is, all
* the actions that were created by the current target being analyzed.
*/
Iterable<Action> getRegisteredActions();
/**
* Returns the Skyframe SkyFunction.Environment if available. Otherwise, null.
*
* <p>If you need to use this for something other than genquery, please think long and hard
* about that.
*/
SkyFunction.Environment getSkyframeEnv();
/**
* Returns the Artifact that is used to hold the non-volatile workspace status for the current
* build request.
*/
Artifact getStableWorkspaceStatusArtifact();
/**
* Returns the Artifact that is used to hold the volatile workspace status (e.g. build
* changelist) for the current build request.
*/
Artifact getVolatileWorkspaceStatusArtifact();
/**
* Returns the Artifacts that contain the workspace status for the current build request.
*
* @param ruleContext the rule to use for error reporting and to determine the
* configuration
*/
ImmutableList<Artifact> getBuildInfo(RuleContext ruleContext, BuildInfoKey key);
/**
* Returns the set of orphan Artifacts (i.e. Artifacts without generating action). Should only be
* called after the ConfiguredTarget is created.
*/
ImmutableSet<Artifact> getOrphanArtifacts();
}
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