private static void ruleErrorDuplicateAlias(String alias, RuleContext ruleContext) {
Iterable<XcodeVersionProvider> xcodeVersionProviders =
ruleContext.getPrerequisites(
XcodeConfigRule.VERSIONS_ATTR_NAME, Mode.TARGET, XcodeVersionProvider.class);
ImmutableList.Builder<Label> labelsContainingAlias = ImmutableList.builder();
for (XcodeVersionProvider versionProvider : xcodeVersionProviders) {
if (versionProvider.getAliases().contains(alias)
|| versionProvider.getVersion().toString().equals(alias)) {
labelsContainingAlias.add(versionProvider.getLabel());
}
}
ruleContext.ruleError(
String.format(
"'%s' is registered to multiple labels (%s) in a single xcode version "
+ "configuration",
alias, Joiner.on(", ").join(labelsContainingAlias.build())));
}
private static Map<String, DottedVersion> aliasesToVersionMap(RuleContext ruleContext) {
Iterable<XcodeVersionProvider> xcodeVersionProviders =
ruleContext.getPrerequisites(
XcodeConfigRule.VERSIONS_ATTR_NAME, Mode.TARGET, XcodeVersionProvider.class);
Map<String, DottedVersion> aliasesToVersionMap = Maps.newLinkedHashMap();
for (XcodeVersionProvider versionProvider : xcodeVersionProviders) {
for (String alias : versionProvider.getAliases()) {
if (aliasesToVersionMap.put(alias, versionProvider.getVersion()) != null) {
ruleErrorDuplicateAlias(alias, ruleContext);
}
}
if (aliasesToVersionMap.put(
versionProvider.getVersion().toString(), versionProvider.getVersion())
!= null) {
ruleErrorDuplicateAlias(versionProvider.getVersion().toString(), ruleContext);
}
}
return aliasesToVersionMap;
}