/** Constructs the RuleConfiguredTarget instance based on the values set for this Builder. */
public ConfiguredTarget build() {
if (ruleContext.getConfiguration().enforceConstraints()) {
checkConstraints();
}
if (ruleContext.hasErrors()) {
return null;
}
FilesToRunProvider filesToRunProvider =
new FilesToRunProvider(
ruleContext.getLabel(),
RuleContext.getFilesToRun(runfilesSupport, filesToBuild),
runfilesSupport,
executable);
add(FileProvider.class, new FileProvider(ruleContext.getLabel(), filesToBuild));
add(FilesToRunProvider.class, filesToRunProvider);
if (runfilesSupport != null) {
// If a binary is built, build its runfiles, too
addOutputGroup(OutputGroupProvider.HIDDEN_TOP_LEVEL, runfilesSupport.getRunfilesMiddleman());
} else if (providers.get(RunfilesProvider.class) != null) {
// If we don't have a RunfilesSupport (probably because this is not a binary rule), we still
// want to build the files this rule contributes to runfiles of dependent rules so that we
// report an error if one of these is broken.
//
// Note that this is a best-effort thing: there is .getDataRunfiles() and all the language-
// specific *RunfilesProvider classes, which we don't add here for reasons that are lost in
// the mists of time.
addOutputGroup(
OutputGroupProvider.HIDDEN_TOP_LEVEL,
((RunfilesProvider) providers.get(RunfilesProvider.class))
.getDefaultRunfiles()
.getAllArtifacts());
}
// Create test action and artifacts if target was successfully initialized
// and is a test.
if (TargetUtils.isTestRule(ruleContext.getTarget())) {
Preconditions.checkState(runfilesSupport != null);
add(TestProvider.class, initializeTestProvider(filesToRunProvider));
}
add(ExtraActionArtifactsProvider.class, initializeExtraActions());
if (!outputGroupBuilders.isEmpty()) {
ImmutableMap.Builder<String, NestedSet<Artifact>> outputGroups = ImmutableMap.builder();
for (Map.Entry<String, NestedSetBuilder<Artifact>> entry : outputGroupBuilders.entrySet()) {
outputGroups.put(entry.getKey(), entry.getValue().build());
}
add(OutputGroupProvider.class, new OutputGroupProvider(outputGroups.build()));
}
return new RuleConfiguredTarget(
ruleContext, mandatoryStampFiles, skylarkProviders.build(), providers);
}
