/**
* In a {@link BuckConfig}, an alias can either refer to a fully-qualified build target, or an
* alias defined earlier in the {@code alias} section. The mapping produced by this method
* reflects the result of resolving all aliases as values in the {@code alias} section.
*/
private static ImmutableMap<String, BuildTarget> createAliasToBuildTargetMap(
ImmutableMap<String, String> rawAliasMap) {
// We use a LinkedHashMap rather than an ImmutableMap.Builder because we want both (1) order to
// be preserved, and (2) the ability to inspect the Map while building it up.
LinkedHashMap<String, BuildTarget> aliasToBuildTarget = Maps.newLinkedHashMap();
for (Map.Entry<String, String> aliasEntry : rawAliasMap.entrySet()) {
String alias = aliasEntry.getKey();
validateAliasName(alias);
// Determine whether the mapping is to a build target or to an alias.
String value = aliasEntry.getValue();
BuildTarget buildTarget;
if (isValidAliasName(value)) {
buildTarget = aliasToBuildTarget.get(value);
if (buildTarget == null) {
throw new HumanReadableException("No alias for: %s.", value);
}
} else {
// Here we parse the alias values with a BuildTargetParser to be strict. We could be looser
// and just grab everything between "//" and ":" and assume it's a valid base path.
buildTarget =
BuildTargetParser.INSTANCE.parse(value, BuildTargetPatternParser.fullyQualified());
}
aliasToBuildTarget.put(alias, buildTarget);
}
return ImmutableMap.copyOf(aliasToBuildTarget);
}
protected BuildRule resolve(BuildTarget target, BuildRuleResolver resolver, String input)
throws MacroException {
BuildTarget other;
try {
other =
BuildTargetParser.INSTANCE.parse(
input, BuildTargetPatternParser.forBaseName(target.getBaseName()));
} catch (BuildTargetParseException e) {
throw new MacroException(e.getMessage(), e);
}
Optional<BuildRule> rule = resolver.getRuleOptional(other);
if (!rule.isPresent()) {
throw new MacroException(String.format("no rule %s", other));
}
return rule.get();
}
public BuildTarget getBuildTargetForFullyQualifiedTarget(String target) {
return BuildTargetParser.INSTANCE.parse(target, BuildTargetPatternParser.fullyQualified());
}
@Override
public ImmutableList<BuildTarget> extractParseTimeDeps(BuildTarget target, String input) {
return ImmutableList.of(
BuildTargetParser.INSTANCE.parse(
input, BuildTargetPatternParser.forBaseName(target.getBaseName())));
}