Examples with SkylarkAspect com.google.devtools.build.lib.packages.SkylarkAspect used on opensource projects

Example 1 with SkylarkAspect

use of com.google.devtools.build.lib.packages.SkylarkAspect in project bazel by bazelbuild.

the class AspectFunction method compute.

@Nullable
@Override
public SkyValue compute(SkyKey skyKey, Environment env) throws AspectFunctionException, InterruptedException {
    SkyframeBuildView view = buildViewProvider.getSkyframeBuildView();
    NestedSetBuilder<Package> transitivePackages = NestedSetBuilder.stableOrder();
    NestedSetBuilder<Label> transitiveRootCauses = NestedSetBuilder.stableOrder();
    AspectKey key = (AspectKey) skyKey.argument();
    ConfiguredAspectFactory aspectFactory;
    Aspect aspect;
    if (key.getAspectClass() instanceof NativeAspectClass) {
        NativeAspectClass nativeAspectClass = (NativeAspectClass) key.getAspectClass();
        aspectFactory = (ConfiguredAspectFactory) nativeAspectClass;
        aspect = Aspect.forNative(nativeAspectClass, key.getParameters());
    } else if (key.getAspectClass() instanceof SkylarkAspectClass) {
        SkylarkAspectClass skylarkAspectClass = (SkylarkAspectClass) key.getAspectClass();
        SkylarkAspect skylarkAspect;
        try {
            skylarkAspect = loadSkylarkAspect(env, skylarkAspectClass.getExtensionLabel(), skylarkAspectClass.getExportedName());
        } catch (AspectCreationException e) {
            throw new AspectFunctionException(e);
        }
        if (skylarkAspect == null) {
            return null;
        }
        aspectFactory = new SkylarkAspectFactory(skylarkAspect);
        aspect = Aspect.forSkylark(skylarkAspect.getAspectClass(), skylarkAspect.getDefinition(key.getParameters()), key.getParameters());
    } else {
        throw new IllegalStateException();
    }
    // Keep this in sync with the same code in ConfiguredTargetFunction.
    PackageValue packageValue = (PackageValue) env.getValue(PackageValue.key(key.getLabel().getPackageIdentifier()));
    if (packageValue == null) {
        return null;
    }
    Package pkg = packageValue.getPackage();
    if (pkg.containsErrors()) {
        throw new AspectFunctionException(new BuildFileContainsErrorsException(key.getLabel().getPackageIdentifier()));
    }
    Target target;
    try {
        target = pkg.getTarget(key.getLabel().getName());
    } catch (NoSuchTargetException e) {
        throw new AspectFunctionException(e);
    }
    if (!(target instanceof Rule)) {
        env.getListener().handle(Event.error(target.getLocation(), String.format("%s is attached to %s %s but aspects must be attached to rules", aspect.getAspectClass().getName(), target.getTargetKind(), target.getName())));
        throw new AspectFunctionException(new AspectCreationException("aspects must be attached to rules"));
    }
    ConfiguredTargetValue configuredTargetValue;
    try {
        configuredTargetValue = (ConfiguredTargetValue) env.getValueOrThrow(ConfiguredTargetValue.key(key.getLabel(), key.getBaseConfiguration()), ConfiguredValueCreationException.class);
    } catch (ConfiguredValueCreationException e) {
        throw new AspectFunctionException(new AspectCreationException(e.getRootCauses()));
    }
    if (configuredTargetValue == null) {
        // precomputed.
        return null;
    }
    if (configuredTargetValue.getConfiguredTarget() == null) {
        return null;
    }
    if (configuredTargetValue.getConfiguredTarget().getProvider(AliasProvider.class) != null) {
        return createAliasAspect(env, target, aspect, key, configuredTargetValue.getConfiguredTarget());
    }
    ConfiguredTarget associatedTarget = configuredTargetValue.getConfiguredTarget();
    ImmutableList.Builder<Aspect> aspectPathBuilder = ImmutableList.builder();
    if (!key.getBaseKeys().isEmpty()) {
        // We transitively collect all required aspects to reduce the number of restarts.
        // Semantically it is enough to just request key.getBaseKeys().
        ImmutableMap<AspectDescriptor, SkyKey> aspectKeys = getSkyKeysForAspects(key.getBaseKeys());
        Map<SkyKey, SkyValue> values = env.getValues(aspectKeys.values());
        if (env.valuesMissing()) {
            return null;
        }
        try {
            associatedTarget = getBaseTargetAndCollectPath(associatedTarget, key.getBaseKeys(), values, aspectPathBuilder);
        } catch (DuplicateException e) {
            env.getListener().handle(Event.error(associatedTarget.getTarget().getLocation(), e.getMessage()));
            throw new AspectFunctionException(new AspectCreationException(e.getMessage(), associatedTarget.getLabel()));
        }
    }
    aspectPathBuilder.add(aspect);
    SkyframeDependencyResolver resolver = view.createDependencyResolver(env);
    // When getting the dependencies of this hybrid aspect+base target, use the aspect's
    // configuration. The configuration of the aspect will always be a superset of the target's
    // (dynamic configuration mode: target is part of the aspect's config fragment requirements;
    // static configuration mode: target is the same configuration as the aspect), so the fragments
    // required by all dependencies (both those of the aspect and those of the base target)
    // will be present this way.
    TargetAndConfiguration originalTargetAndAspectConfiguration = new TargetAndConfiguration(target, key.getAspectConfiguration());
    ImmutableList<Aspect> aspectPath = aspectPathBuilder.build();
    try {
        // Get the configuration targets that trigger this rule's configurable attributes.
        ImmutableMap<Label, ConfigMatchingProvider> configConditions = ConfiguredTargetFunction.getConfigConditions(target, env, resolver, originalTargetAndAspectConfiguration, transitivePackages, transitiveRootCauses);
        if (configConditions == null) {
            // Those targets haven't yet been resolved.
            return null;
        }
        OrderedSetMultimap<Attribute, ConfiguredTarget> depValueMap;
        try {
            depValueMap = ConfiguredTargetFunction.computeDependencies(env, resolver, originalTargetAndAspectConfiguration, aspectPath, configConditions, ruleClassProvider, view.getHostConfiguration(originalTargetAndAspectConfiguration.getConfiguration()), transitivePackages, transitiveRootCauses);
        } catch (ConfiguredTargetFunctionException e) {
            throw new AspectCreationException(e.getMessage());
        }
        if (depValueMap == null) {
            return null;
        }
        if (!transitiveRootCauses.isEmpty()) {
            throw new AspectFunctionException(new AspectCreationException("Loading failed", transitiveRootCauses.build()));
        }
        return createAspect(env, key, aspectPath, aspect, aspectFactory, associatedTarget, key.getAspectConfiguration(), configConditions, depValueMap, transitivePackages);
    } catch (DependencyEvaluationException e) {
        if (e.getCause() instanceof ConfiguredValueCreationException) {
            ConfiguredValueCreationException cause = (ConfiguredValueCreationException) e.getCause();
            throw new AspectFunctionException(new AspectCreationException(cause.getMessage(), cause.getAnalysisRootCause()));
        } else if (e.getCause() instanceof InconsistentAspectOrderException) {
            InconsistentAspectOrderException cause = (InconsistentAspectOrderException) e.getCause();
            throw new AspectFunctionException(new AspectCreationException(cause.getMessage()));
        } else {
            // Cast to InvalidConfigurationException as a consistency check. If you add any
            // DependencyEvaluationException constructors, you may need to change this code, too.
            InvalidConfigurationException cause = (InvalidConfigurationException) e.getCause();
            throw new AspectFunctionException(new AspectCreationException(cause.getMessage()));
        }
    } catch (AspectCreationException e) {
        throw new AspectFunctionException(e);
    }
}

Example 2 with SkylarkAspect

use of com.google.devtools.build.lib.packages.SkylarkAspect in project bazel by bazelbuild.

the class SkylarkRuleClassFunctionsTest method aspectRequiredAspectProvidersEmpty.

@Test
public void aspectRequiredAspectProvidersEmpty() throws Exception {
    evalAndExport("def _impl(target, ctx):", "   pass", "my_aspect = aspect(_impl, required_aspect_providers=[])");
    SkylarkAspect myAspect = (SkylarkAspect) lookup("my_aspect");
    RequiredProviders requiredProviders = myAspect.getDefinition(AspectParameters.EMPTY).getRequiredProvidersForAspects();
    assertThat(requiredProviders.isSatisfiedBy(AdvertisedProviderSet.ANY)).isFalse();
    assertThat(requiredProviders.isSatisfiedBy(AdvertisedProviderSet.EMPTY)).isFalse();
}

Example 3 with SkylarkAspect

use of com.google.devtools.build.lib.packages.SkylarkAspect in project bazel by bazelbuild.

the class SkylarkRuleClassFunctionsTest method testLabelListWithAspects.

@Test
public void testLabelListWithAspects() throws Exception {
    evalAndExport("def _impl(target, ctx):", "   pass", "my_aspect = aspect(implementation = _impl)", "a = attr.label_list(aspects = [my_aspect])");
    SkylarkAttr.Descriptor attr = (SkylarkAttr.Descriptor) ev.lookup("a");
    SkylarkAspect aspect = (SkylarkAspect) ev.lookup("my_aspect");
    assertThat(aspect).isNotNull();
    assertThat(attr.build("xxx").getAspectClasses()).containsExactly(aspect.getAspectClass());
}

Example 4 with SkylarkAspect

use of com.google.devtools.build.lib.packages.SkylarkAspect in project bazel by bazelbuild.

the class SkylarkRuleClassFunctionsTest method testAspectExtraDeps.

@Test
public void testAspectExtraDeps() throws Exception {
    evalAndExport("def _impl(target, ctx):", "   pass", "my_aspect = aspect(_impl,", "   attrs = { '_extra_deps' : attr.label(default = Label('//foo/bar:baz')) }", ")");
    SkylarkAspect aspect = (SkylarkAspect) ev.lookup("my_aspect");
    Attribute attribute = Iterables.getOnlyElement(aspect.getAttributes());
    assertThat(attribute.getName()).isEqualTo("$extra_deps");
    assertThat(attribute.getDefaultValue(null)).isEqualTo(Label.parseAbsolute("//foo/bar:baz", false));
}

Example 5 with SkylarkAspect

use of com.google.devtools.build.lib.packages.SkylarkAspect in project bazel by bazelbuild.

the class SkylarkRuleClassFunctionsTest method testAspectParameter.

@Test
public void testAspectParameter() throws Exception {
    evalAndExport("def _impl(target, ctx):", "   pass", "my_aspect = aspect(_impl,", "   attrs = { 'param' : attr.string(values=['a', 'b']) }", ")");
    SkylarkAspect aspect = (SkylarkAspect) ev.lookup("my_aspect");
    Attribute attribute = Iterables.getOnlyElement(aspect.getAttributes());
    assertThat(attribute.getName()).isEqualTo("param");
}