/** Returns the include paths for the generated protos. */
public ImmutableSet<PathFragment> getUserHeaderSearchPaths() {
PathFragment workspaceRelativeOutputDir = getWorkspaceRelativeOutputDir();
ImmutableSet.Builder<PathFragment> searchPathEntriesBuilder =
new ImmutableSet.Builder<PathFragment>().add(workspaceRelativeOutputDir);
if (attributes.needsPerProtoIncludes()) {
PathFragment generatedProtoDir =
new PathFragment(workspaceRelativeOutputDir, ruleContext.getLabel().getPackageFragment());
searchPathEntriesBuilder
.add(generatedProtoDir)
.addAll(Iterables.transform(getGeneratedHeaders(), PARENT_PATHFRAGMENT));
}
return searchPathEntriesBuilder.build();
}
/**
* Validates proto support.
*
* <ul>
* <li>Validates that there are protos specified to be compiled.
* <li>Validates that, when enabling the open source protobuf library, the options for the PB2
* are not specified also.
* <li>Validates that, when enabling the open source protobuf library, the rule specifies at
* least one portable proto filter file.
* </ul>
*
* @return this proto support
*/
public ProtoSupport validate() {
if (attributes.getProtoFiles().isEmpty()) {
ruleContext.ruleError(NO_PROTOS_ERROR);
}
if (usesProtobufLibrary()) {
if (attributes.getPortableProtoFilters().isEmpty()) {
ruleContext.ruleError(PORTABLE_PROTO_FILTERS_EMPTY_ERROR);
}
if (attributes.outputsCpp()
|| attributes.usesObjcHeaderNames()
|| attributes.needsPerProtoIncludes()
|| attributes.getOptionsFile() != null) {
ruleContext.ruleError(PORTABLE_PROTO_FILTERS_NOT_EXCLUSIVE_ERROR);
}
}
return this;
}
