diff options
author | Han-Wen Nienhuys <hanwen@google.com> | 2015-02-25 16:45:20 +0100 |
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committer | Han-Wen Nienhuys <hanwen@google.com> | 2015-02-25 16:45:20 +0100 |
commit | d08b27fa9701fecfdb69e1b0d1ac2459efc2129b (patch) | |
tree | 5d50963026239ca5aebfb47ea5b8db7e814e57c8 /src/main/java/com/google/devtools/build/lib/skyframe/SkylarkImportLookupValue.java |
Update from Google.
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MOE_MIGRATED_REVID=85702957
Diffstat (limited to 'src/main/java/com/google/devtools/build/lib/skyframe/SkylarkImportLookupValue.java')
-rw-r--r-- | src/main/java/com/google/devtools/build/lib/skyframe/SkylarkImportLookupValue.java | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/src/main/java/com/google/devtools/build/lib/skyframe/SkylarkImportLookupValue.java b/src/main/java/com/google/devtools/build/lib/skyframe/SkylarkImportLookupValue.java new file mode 100644 index 0000000000..3c87431129 --- /dev/null +++ b/src/main/java/com/google/devtools/build/lib/skyframe/SkylarkImportLookupValue.java @@ -0,0 +1,70 @@ +// 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.common.base.Preconditions; +import com.google.devtools.build.lib.packages.PackageIdentifier; +import com.google.devtools.build.lib.packages.PackageIdentifier.RepositoryName; +import com.google.devtools.build.lib.skyframe.ASTFileLookupValue.ASTLookupInputException; +import com.google.devtools.build.lib.syntax.SkylarkEnvironment; +import com.google.devtools.build.lib.vfs.PathFragment; +import com.google.devtools.build.skyframe.SkyKey; +import com.google.devtools.build.skyframe.SkyValue; + +/** + * A value that represents a Skylark import lookup result. The lookup value corresponds to + * exactly one Skylark file, identified by the PathFragment SkyKey argument. + */ +public class SkylarkImportLookupValue implements SkyValue { + + private final SkylarkEnvironment importedEnvironment; + /** + * The immediate Skylark file dependency descriptor class corresponding to this value. + * Using this reference it's possible to reach the transitive closure of Skylark files + * on which this Skylark file depends. + */ + private final SkylarkFileDependency dependency; + + public SkylarkImportLookupValue( + SkylarkEnvironment importedEnvironment, SkylarkFileDependency dependency) { + this.importedEnvironment = Preconditions.checkNotNull(importedEnvironment); + this.dependency = Preconditions.checkNotNull(dependency); + } + + /** + * Returns the imported SkylarkEnvironment. + */ + public SkylarkEnvironment getImportedEnvironment() { + return importedEnvironment; + } + + /** + * Returns the immediate Skylark file dependency corresponding to this import lookup value. + */ + public SkylarkFileDependency getDependency() { + return dependency; + } + + static SkyKey key(PackageIdentifier pkgIdentifier) throws ASTLookupInputException { + return key(pkgIdentifier.getRepository(), pkgIdentifier.getPackageFragment()); + } + + static SkyKey key(RepositoryName repo, PathFragment fileToImport) throws ASTLookupInputException { + // Skylark import lookup keys need to be valid AST file lookup keys. + ASTFileLookupValue.checkInputArgument(fileToImport); + return new SkyKey( + SkyFunctions.SKYLARK_IMPORTS_LOOKUP, + new PackageIdentifier(repo, fileToImport)); + } +} |