public SNode coerceSubTypingNew(
final SNode subtype,
final IMatchingPattern pattern,
final boolean isWeak,
final State state) {
if (subtype == null) return null;
if (pattern.match(subtype)) return subtype;
if (!CoerceUtil.canBeCoerced(subtype, pattern.getConceptFQName())) return null;
if ("jetbrains.mps.lang.typesystem.structure.MeetType".equals(subtype.getConceptFqName())) {
List<SNode> children = subtype.getChildren("argument");
for (SNode child : children) {
SNode result = coerceSubTypingNew(child, pattern, isWeak, state);
if (result != null) return result;
}
return null;
}
final TypeCheckingContextNew typeCheckingContext =
state == null ? null : state.getTypeCheckingContext();
if ("jetbrains.mps.lang.typesystem.structure.JoinType".equals(subtype.getConceptFqName())) {
List<SNode> children = subtype.getChildren("argument");
SNode lcs = mySubTyping.createLCS(children, typeCheckingContext);
return coerceSubTypingNew(lcs, pattern, isWeak, state);
}
// asking the cache
return NodeReadAccessCasterInEditor.runReadTransparentAction(
new Computable<SNode>() {
public SNode compute() {
Pair<Boolean, SNode> answer = getCoerceCacheAnswer(subtype, pattern, isWeak);
if (answer != null && answer.o1) {
return answer.o2;
}
CoercionMatcher coercionMatcher = new CoercionMatcher(pattern);
SNode result = searchInSuperTypes(subtype, coercionMatcher, isWeak);
// writing to the cache
SubtypingCache subtypingCache = myTypeChecker.getSubtypingCache();
if (subtypingCache != null) {
subtypingCache.cacheCoerce(subtype, pattern, result, isWeak);
}
subtypingCache = myTypeChecker.getGlobalSubtypingCache();
if (subtypingCache != null) {
subtypingCache.cacheCoerce(subtype, pattern, result, isWeak);
}
return result;
}
});
}
@Override
public boolean matchesWith(SNode nodeToMatch) {
return myPattern.match(nodeToMatch);
}