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

Example 6 with Attribute

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

the class ConfiguredAttributeMapper method getAndValidate.

/**
   * Variation of {@link #get} that throws an informative exception if the attribute
   * can't be resolved due to intrinsic contradictions in the configuration.
   */
private <T> T getAndValidate(String attributeName, Type<T> type) throws EvalException {
    SelectorList<T> selectorList = getSelectorList(attributeName, type);
    if (selectorList == null) {
        // This is a normal attribute.
        return super.get(attributeName, type);
    }
    List<T> resolvedList = new ArrayList<>();
    for (Selector<T> selector : selectorList.getSelectors()) {
        ConfigKeyAndValue<T> resolvedPath = resolveSelector(attributeName, selector);
        if (!selector.isValueSet(resolvedPath.configKey)) {
            // Use the default. We don't have access to the rule here, so pass null to
            // Attribute.getValue(). This has the result of making attributes with condition
            // predicates ineligible for "None" values. But no user-facing attributes should
            // do that anyway, so that isn't a loss.
            Attribute attr = getAttributeDefinition(attributeName);
            Verify.verify(attr.getCondition() == Predicates.<AttributeMap>alwaysTrue());
            resolvedList.add((T) attr.getDefaultValue(null));
        } else {
            resolvedList.add(resolvedPath.value);
        }
    }
    return resolvedList.size() == 1 ? resolvedList.get(0) : type.concat(resolvedList);
}

Example 7 with Attribute

use of com.google.devtools.build.lib.packages.Attribute 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 8 with Attribute

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

the class ConfiguredTargetFunction method compute.

@Override
public SkyValue compute(SkyKey key, Environment env) throws ConfiguredTargetFunctionException, InterruptedException {
    SkyframeBuildView view = buildViewProvider.getSkyframeBuildView();
    NestedSetBuilder<Package> transitivePackages = NestedSetBuilder.stableOrder();
    NestedSetBuilder<Label> transitiveLoadingRootCauses = NestedSetBuilder.stableOrder();
    ConfiguredTargetKey configuredTargetKey = (ConfiguredTargetKey) key.argument();
    LabelAndConfiguration lc = LabelAndConfiguration.of(configuredTargetKey.getLabel(), configuredTargetKey.getConfiguration());
    BuildConfiguration configuration = lc.getConfiguration();
    PackageValue packageValue = (PackageValue) env.getValue(PackageValue.key(lc.getLabel().getPackageIdentifier()));
    if (packageValue == null) {
        return null;
    }
    // TODO(ulfjack): This tries to match the logic in TransitiveTargetFunction /
    // TargetMarkerFunction. Maybe we can merge the two?
    Package pkg = packageValue.getPackage();
    Target target;
    try {
        target = pkg.getTarget(lc.getLabel().getName());
    } catch (NoSuchTargetException e) {
        throw new ConfiguredTargetFunctionException(new ConfiguredValueCreationException(e.getMessage()));
    }
    if (pkg.containsErrors()) {
        transitiveLoadingRootCauses.add(lc.getLabel());
    }
    transitivePackages.add(pkg);
    // null).
    if (!target.isConfigurable()) {
        configuration = null;
    }
    // associates the error with the dep, which is misleading.
    if (useDynamicConfigurations(configuration) && configuration.trimConfigurations() && env.getValue(TransitiveTargetValue.key(lc.getLabel())) == null) {
        return null;
    }
    TargetAndConfiguration ctgValue = new TargetAndConfiguration(target, configuration);
    SkyframeDependencyResolver resolver = view.createDependencyResolver(env);
    // TODO(janakr): this acquire() call may tie up this thread indefinitely, reducing the
    // parallelism of Skyframe. This is a strict improvement over the prior state of the code, in
    // which we ran with #processors threads, but ideally we would call #tryAcquire here, and if we
    // failed, would exit this SkyFunction and restart it when permits were available.
    cpuBoundSemaphore.acquire();
    try {
        // Get the configuration targets that trigger this rule's configurable attributes.
        ImmutableMap<Label, ConfigMatchingProvider> configConditions = getConfigConditions(ctgValue.getTarget(), env, resolver, ctgValue, transitivePackages, transitiveLoadingRootCauses);
        if (env.valuesMissing()) {
            return null;
        }
        // attributes.
        if (!transitiveLoadingRootCauses.isEmpty() && configConditions != NO_CONFIG_CONDITIONS) {
            throw new ConfiguredTargetFunctionException(new ConfiguredValueCreationException(transitiveLoadingRootCauses.build()));
        }
        OrderedSetMultimap<Attribute, ConfiguredTarget> depValueMap = computeDependencies(env, resolver, ctgValue, ImmutableList.<Aspect>of(), configConditions, ruleClassProvider, view.getHostConfiguration(configuration), transitivePackages, transitiveLoadingRootCauses);
        if (env.valuesMissing()) {
            return null;
        }
        if (!transitiveLoadingRootCauses.isEmpty()) {
            throw new ConfiguredTargetFunctionException(new ConfiguredValueCreationException(transitiveLoadingRootCauses.build()));
        }
        Preconditions.checkNotNull(depValueMap);
        ConfiguredTargetValue ans = createConfiguredTarget(view, env, target, configuration, depValueMap, configConditions, transitivePackages);
        return ans;
    } catch (DependencyEvaluationException e) {
        if (e.getCause() instanceof ConfiguredValueCreationException) {
            throw new ConfiguredTargetFunctionException((ConfiguredValueCreationException) e.getCause());
        } else if (e.getCause() instanceof InconsistentAspectOrderException) {
            InconsistentAspectOrderException cause = (InconsistentAspectOrderException) e.getCause();
            throw new ConfiguredTargetFunctionException(new ConfiguredValueCreationException(cause.getMessage(), target.getLabel()));
        } 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 ConfiguredTargetFunctionException(new ConfiguredValueCreationException(cause.getMessage(), target.getLabel()));
        }
    } catch (AspectCreationException e) {
        // getAnalysisRootCause may be null if the analysis of the aspect itself failed.
        Label analysisRootCause = target.getLabel();
        if (e.getAnalysisRootCause() != null) {
            analysisRootCause = e.getAnalysisRootCause();
        }
        throw new ConfiguredTargetFunctionException(new ConfiguredValueCreationException(e.getMessage(), analysisRootCause));
    } finally {
        cpuBoundSemaphore.release();
    }
}

Example 9 with Attribute

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

the class SkylarkRuleClassFunctionsTest method testOutputAttr.

@Test
public void testOutputAttr() throws Exception {
    Attribute attr = buildAttribute("a1", "attr.output()");
    assertEquals(BuildType.OUTPUT, attr.getType());
}

Example 10 with Attribute

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

the class SkylarkRuleClassFunctionsTest method testAttrWithSkylarkFileType.

@Test
public void testAttrWithSkylarkFileType() throws Exception {
    Attribute attr = buildAttribute("a1", "attr.label_list(allow_files = FileType(['.xml']))");
    assertTrue(attr.getAllowedFileTypesPredicate().apply("a.xml"));
    assertFalse(attr.getAllowedFileTypesPredicate().apply("a.txt"));
}