Add all available toolchains to the FileProvider of cc_toolchain_suite.
This is necessary because we don't have a replacement for saying "this genrule needs the C++ toolchain" and I'd prefer this to do it in a backward-compatible way; burned myself here by trying to be principled, so let's now do the pragmatic thing.
--
MOS_MIGRATED_REVID=127317024
diff --git a/src/main/java/com/google/devtools/build/lib/analysis/RuleContext.java b/src/main/java/com/google/devtools/build/lib/analysis/RuleContext.java
index dc6064c..85b2be3 100644
--- a/src/main/java/com/google/devtools/build/lib/analysis/RuleContext.java
+++ b/src/main/java/com/google/devtools/build/lib/analysis/RuleContext.java
@@ -648,6 +648,28 @@
}
/**
+ * Returns the dependencies through a {@code LABEL_DICT_UNARY} attribute as a map from
+ * a string to a {@link TransitiveInfoCollection}.
+ */
+ public Map<String, TransitiveInfoCollection> getPrerequisiteMap(String attributeName) {
+ Attribute attributeDefinition = getAttribute(attributeName);
+ Preconditions.checkState(attributeDefinition.getType() == BuildType.LABEL_DICT_UNARY);
+
+ ImmutableMap.Builder<String, TransitiveInfoCollection> result = ImmutableMap.builder();
+ Map<String, Label> dict = attributes().get(attributeName, BuildType.LABEL_DICT_UNARY);
+ Map<Label, ConfiguredTarget> labelToDep = new HashMap<>();
+ for (ConfiguredTarget dep : targetMap.get(attributeName)) {
+ labelToDep.put(dep.getLabel(), dep);
+ }
+
+ for (Map.Entry<String, Label> entry : dict.entrySet()) {
+ result.put(entry.getKey(), Preconditions.checkNotNull(labelToDep.get(entry.getValue())));
+ }
+
+ return result.build();
+ }
+
+ /**
* Returns the list of transitive info collections that feed into this target through the
* specified attribute. Note that you need to specify the correct mode for the attribute,
* otherwise an assertion will be raised.
