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Expose platform-related providers to Skylark.
Change-Id: I7615d3e6e33e0c48f18b2506a135f45ce3705a38 PiperOrigin-RevId: 152256914
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92 changes: 92 additions & 0 deletions
92
src/main/java/com/google/devtools/build/lib/rules/platform/ConstraintSettingInfo.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,92 @@ | ||
| // Copyright 2017 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.rules.platform; | ||
|
|
||
| import com.google.auto.value.AutoValue; | ||
| import com.google.common.base.Function; | ||
| import com.google.common.collect.ImmutableMap; | ||
| import com.google.common.collect.Iterables; | ||
| import com.google.devtools.build.lib.analysis.TransitiveInfoCollection; | ||
| import com.google.devtools.build.lib.cmdline.Label; | ||
| import com.google.devtools.build.lib.concurrent.ThreadSafety.Immutable; | ||
| import com.google.devtools.build.lib.packages.ClassObjectConstructor; | ||
| import com.google.devtools.build.lib.packages.NativeClassObjectConstructor; | ||
| import com.google.devtools.build.lib.packages.SkylarkClassObject; | ||
| import com.google.devtools.build.lib.packages.SkylarkProviderIdentifier; | ||
| import com.google.devtools.build.lib.skylarkinterface.SkylarkCallable; | ||
| import com.google.devtools.build.lib.skylarkinterface.SkylarkModule; | ||
| import com.google.devtools.build.lib.skylarkinterface.SkylarkModuleCategory; | ||
| import com.google.devtools.build.lib.util.Preconditions; | ||
|
|
||
| /** Provider for a platform constraint setting that is available to be fulfilled. */ | ||
| @SkylarkModule( | ||
| name = "ConstraintSettingInfo", | ||
| doc = "A specific constraint setting that may be used to define a platform.", | ||
| category = SkylarkModuleCategory.PROVIDER | ||
| ) | ||
| @AutoValue | ||
| @Immutable | ||
| public abstract class ConstraintSettingInfo extends SkylarkClassObject { | ||
|
|
||
| /** Name used in Skylark for accessing this provider. */ | ||
| static final String SKYLARK_NAME = "ConstraintSettingInfo"; | ||
|
|
||
| /** Skylark constructor and identifier for this provider. */ | ||
| static final ClassObjectConstructor SKYLARK_CONSTRUCTOR = | ||
| new NativeClassObjectConstructor(SKYLARK_NAME) {}; | ||
|
|
||
| /** Identifier used to retrieve this provider from rules which export it. */ | ||
| public static final SkylarkProviderIdentifier SKYLARK_IDENTIFIER = | ||
| SkylarkProviderIdentifier.forKey(SKYLARK_CONSTRUCTOR.getKey()); | ||
|
|
||
| ConstraintSettingInfo() { | ||
| super(SKYLARK_CONSTRUCTOR, ImmutableMap.<String, Object>of()); | ||
| } | ||
|
|
||
| @SkylarkCallable( | ||
| name = "label", | ||
| doc = "The label used to identify this constraint setting.", | ||
| structField = true | ||
| ) | ||
| public abstract Label label(); | ||
|
|
||
| /** Retrieves and casts the provider from the given target. */ | ||
| public static ConstraintSettingInfo fromTarget(TransitiveInfoCollection target) { | ||
| Object provider = target.get(SKYLARK_IDENTIFIER); | ||
| if (provider == null) { | ||
| return null; | ||
| } | ||
| Preconditions.checkState(provider instanceof ConstraintSettingInfo); | ||
| return (ConstraintSettingInfo) provider; | ||
| } | ||
|
|
||
| /** Retrieves and casts the providers from the given targets. */ | ||
| public static Iterable<ConstraintSettingInfo> fromTargets( | ||
| Iterable<? extends TransitiveInfoCollection> targets) { | ||
| return Iterables.transform( | ||
| targets, | ||
| new Function<TransitiveInfoCollection, ConstraintSettingInfo>() { | ||
| @Override | ||
| public ConstraintSettingInfo apply(TransitiveInfoCollection target) { | ||
| return fromTarget(target); | ||
| } | ||
| }); | ||
| } | ||
|
|
||
| /** Returns a new {@link ConstraintSettingInfo} with the given data. */ | ||
| public static ConstraintSettingInfo create(Label constraintSetting) { | ||
| return new AutoValue_ConstraintSettingInfo(constraintSetting); | ||
| } | ||
| } |
31 changes: 0 additions & 31 deletions
31
src/main/java/com/google/devtools/build/lib/rules/platform/ConstraintSettingProvider.java
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99 changes: 99 additions & 0 deletions
99
src/main/java/com/google/devtools/build/lib/rules/platform/ConstraintValueInfo.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,99 @@ | ||
| // Copyright 2017 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.rules.platform; | ||
|
|
||
| import com.google.auto.value.AutoValue; | ||
| import com.google.common.base.Function; | ||
| import com.google.common.collect.ImmutableMap; | ||
| import com.google.common.collect.Iterables; | ||
| import com.google.devtools.build.lib.analysis.TransitiveInfoCollection; | ||
| import com.google.devtools.build.lib.cmdline.Label; | ||
| import com.google.devtools.build.lib.concurrent.ThreadSafety.Immutable; | ||
| import com.google.devtools.build.lib.packages.ClassObjectConstructor; | ||
| import com.google.devtools.build.lib.packages.NativeClassObjectConstructor; | ||
| import com.google.devtools.build.lib.packages.SkylarkClassObject; | ||
| import com.google.devtools.build.lib.packages.SkylarkProviderIdentifier; | ||
| import com.google.devtools.build.lib.skylarkinterface.SkylarkCallable; | ||
| import com.google.devtools.build.lib.skylarkinterface.SkylarkModule; | ||
| import com.google.devtools.build.lib.skylarkinterface.SkylarkModuleCategory; | ||
| import com.google.devtools.build.lib.util.Preconditions; | ||
|
|
||
| /** Provider for a platform constraint value that fulfills a {@link ConstraintSettingInfo}. */ | ||
| @SkylarkModule( | ||
| name = "ConstraintValueProvider", | ||
| doc = "A value for a constraint setting that can be used to define a platform.", | ||
| category = SkylarkModuleCategory.PROVIDER | ||
| ) | ||
| @AutoValue | ||
| @Immutable | ||
| public abstract class ConstraintValueInfo extends SkylarkClassObject { | ||
|
|
||
| /** Name used in Skylark for accessing this provider. */ | ||
| static final String SKYLARK_NAME = "ConstraintValueInfo"; | ||
|
|
||
| /** Skylark constructor and identifier for this provider. */ | ||
| static final ClassObjectConstructor SKYLARK_CONSTRUCTOR = | ||
| new NativeClassObjectConstructor(SKYLARK_NAME) {}; | ||
|
|
||
| /** Identifier used to retrieve this provider from rules which export it. */ | ||
| public static final SkylarkProviderIdentifier SKYLARK_IDENTIFIER = | ||
| SkylarkProviderIdentifier.forKey(SKYLARK_CONSTRUCTOR.getKey()); | ||
|
|
||
| ConstraintValueInfo() { | ||
| super(SKYLARK_CONSTRUCTOR, ImmutableMap.<String, Object>of()); | ||
| } | ||
|
|
||
| @SkylarkCallable( | ||
| name = "constraint", | ||
| doc = "The constraint setting that this value fulfills.", | ||
| structField = true | ||
| ) | ||
| public abstract ConstraintSettingInfo constraint(); | ||
|
|
||
| @SkylarkCallable( | ||
| name = "label", | ||
| doc = "The label used to identify this constraint value.", | ||
| structField = true | ||
| ) | ||
| public abstract Label label(); | ||
|
|
||
| /** Retrieves and casts the provider from the given target. */ | ||
| public static ConstraintValueInfo fromTarget(TransitiveInfoCollection target) { | ||
| Object provider = target.get(SKYLARK_IDENTIFIER); | ||
| if (provider == null) { | ||
| return null; | ||
| } | ||
| Preconditions.checkState(provider instanceof ConstraintValueInfo); | ||
| return (ConstraintValueInfo) provider; | ||
| } | ||
|
|
||
| /** Retrieves and casts the providers from the given targets. */ | ||
| public static Iterable<ConstraintValueInfo> fromTargets( | ||
| Iterable<? extends TransitiveInfoCollection> targets) { | ||
| return Iterables.transform( | ||
| targets, | ||
| new Function<TransitiveInfoCollection, ConstraintValueInfo>() { | ||
| @Override | ||
| public ConstraintValueInfo apply(TransitiveInfoCollection target) { | ||
| return fromTarget(target); | ||
| } | ||
| }); | ||
| } | ||
|
|
||
| /** Returns a new {@link ConstraintValueInfo} with the given data. */ | ||
| public static ConstraintValueInfo create(ConstraintSettingInfo constraint, Label value) { | ||
| return new AutoValue_ConstraintValueInfo(constraint, value); | ||
| } | ||
| } |
33 changes: 0 additions & 33 deletions
33
src/main/java/com/google/devtools/build/lib/rules/platform/ConstraintValueProvider.java
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