Examples with PatchTransition com.google.devtools.build.lib.analysis.config.PatchTransition used on opensource projects

Example 1 with PatchTransition

use of com.google.devtools.build.lib.analysis.config.PatchTransition in project bazel by bazelbuild.

the class ConfiguredTargetFunction method getDynamicTransitionOptions.

/**
   * Applies a dynamic configuration transition over a set of build options.
   *
   * @return the build options for the transitioned configuration. If trimResults is true,
   *     only options needed by the required fragments are included. Else the same options as the
   *     original input are included (with different possible values, of course).
   */
static List<BuildOptions> getDynamicTransitionOptions(BuildOptions fromOptions, Attribute.Transition transition, Iterable<Class<? extends BuildConfiguration.Fragment>> requiredFragments, RuleClassProvider ruleClassProvider, boolean trimResults) {
    List<BuildOptions> result;
    if (transition == Attribute.ConfigurationTransition.NONE) {
        result = ImmutableList.<BuildOptions>of(fromOptions);
    } else if (transition instanceof PatchTransition) {
        // TODO(bazel-team): safety-check that this never mutates fromOptions.
        result = ImmutableList.<BuildOptions>of(((PatchTransition) transition).apply(fromOptions));
    } else if (transition instanceof Attribute.SplitTransition) {
        // Attribute.java doesn't have the BuildOptions symbol.
        @SuppressWarnings("unchecked") List<BuildOptions> toOptions = ((Attribute.SplitTransition<BuildOptions>) transition).split(fromOptions);
        if (toOptions.isEmpty()) {
            // When the split returns an empty list, it's signaling it doesn't apply to this instance.
            // Check that it's safe to skip the transition and return the original options.
            Verify.verify(transition.defaultsToSelf());
            result = ImmutableList.<BuildOptions>of(fromOptions);
        } else {
            result = toOptions;
        }
    } else {
        throw new IllegalStateException(String.format("unsupported dynamic transition type: %s", transition.getClass().getName()));
    }
    if (!trimResults) {
        return result;
    } else {
        ImmutableList.Builder<BuildOptions> trimmedOptions = ImmutableList.builder();
        for (BuildOptions toOptions : result) {
            trimmedOptions.add(toOptions.trim(BuildConfiguration.getOptionsClasses(requiredFragments, ruleClassProvider)));
        }
        return trimmedOptions.build();
    }
}

Example 2 with PatchTransition

use of com.google.devtools.build.lib.analysis.config.PatchTransition in project bazel by bazelbuild.

the class ConfigurationsForTargetsWithDynamicConfigurationsTest method newPatchTransition.

/**
   * Returns a custom {@link PatchTransition} with the given value added to
   * {@link BuildConfiguration.Options#testFilter}.
   */
private static PatchTransition newPatchTransition(final String value) {
    return new PatchTransition() {

        @Override
        public BuildOptions apply(BuildOptions options) {
            BuildOptions toOptions = options.clone();
            BuildConfiguration.Options baseOptions = toOptions.get(BuildConfiguration.Options.class);
            baseOptions.testFilter = (nullToEmpty(baseOptions.testFilter)) + value;
            return toOptions;
        }

        @Override
        public boolean defaultsToSelf() {
            return false;
        }
    };
}