private static boolean canMerge(
IjFolder parent, IjFolder child, PackagePathCache packagePathCache) {
Preconditions.checkArgument(child.getPath().startsWith(parent.getPath()));
if (!child.canMergeWith(parent)) {
return false;
}
if (parent.getWantsPackagePrefix() != child.getWantsPackagePrefix()) {
return false;
}
if (parent.getWantsPackagePrefix()) {
Optional<Path> parentPackage = packagePathCache.lookup(parent);
if (!parentPackage.isPresent()) {
return false;
}
Path childPackage = packagePathCache.lookup(child).get();
int pathDifference = child.getPath().getNameCount() - parent.getPath().getNameCount();
Preconditions.checkState(pathDifference == 1);
if (childPackage.getNameCount() == 0) {
return false;
}
if (!MorePaths.getParentOrEmpty(childPackage).equals(parentPackage.get())) {
return false;
}
}
return true;
}
/**
* @param cellRoot root path to the cell the rule is defined in.
* @param map the map of values that define the rule.
* @param rulePathForDebug path to the build file the rule is defined in, only used for debugging.
* @return the build target defined by the rule.
*/
public static UnflavoredBuildTarget parseBuildTargetFromRawRule(
Path cellRoot, Map<String, Object> map, Path rulePathForDebug) {
String basePath = (String) map.get("buck.base_path");
String name = (String) map.get("name");
if (basePath == null || name == null) {
throw new IllegalStateException(
String.format(
"Attempting to parse build target from malformed raw data in %s: %s.",
rulePathForDebug, Joiner.on(",").withKeyValueSeparator("->").join(map)));
}
Path otherBasePath = cellRoot.relativize(MorePaths.getParentOrEmpty(rulePathForDebug));
if (!otherBasePath.equals(otherBasePath.getFileSystem().getPath(basePath))) {
throw new IllegalStateException(
String.format(
"Raw data claims to come from [%s], but we tried rooting it at [%s].",
basePath, otherBasePath));
}
return UnflavoredBuildTarget.builder(UnflavoredBuildTarget.BUILD_TARGET_PREFIX + basePath, name)
.setCellPath(cellRoot)
.build();
}