public static SNode getBinaryOperationType(SNode leftType, SNode rightType, boolean mayBeString) {
List<SNode> leastCommonSupertypes =
SubtypingUtil.leastCommonSuperTypes(Arrays.asList(leftType, rightType), null);
if (mayBeString) {
SModel javaLangJavaStubModelDescriptor =
SModelRepository.getInstance()
.getModelDescriptor(SModelReference.fromString("java.lang@java_stub"));
assert javaLangJavaStubModelDescriptor != null;
SModel javaLang = javaLangJavaStubModelDescriptor.getSModel();
SNode stringClass = SModelOperations.getRootByName(javaLang, "String");
if (SNodeOperations.isInstanceOf(
leftType, "jetbrains.mps.baseLanguage.structure.ClassifierType")
&& SLinkOperations.getTarget(
(SNodeOperations.cast(
leftType, "jetbrains.mps.baseLanguage.structure.ClassifierType")),
"classifier",
false)
== stringClass
|| SNodeOperations.isInstanceOf(
rightType, "jetbrains.mps.baseLanguage.structure.ClassifierType")
&& SLinkOperations.getTarget(
(SNodeOperations.cast(
rightType, "jetbrains.mps.baseLanguage.structure.ClassifierType")),
"classifier",
false)
== stringClass) {
SNode classifierType =
SConceptOperations.createNewNode(
"jetbrains.mps.baseLanguage.structure.ClassifierType", null);
SLinkOperations.setTarget(
classifierType,
"classifier",
SNodeOperations.cast(stringClass, "jetbrains.mps.baseLanguage.structure.Classifier"),
false);
return classifierType;
}
}
if (leastCommonSupertypes.isEmpty()) {
SNode runtimeErrorType =
SConceptOperations.createNewNode(
"jetbrains.mps.lang.typesystem.structure.RuntimeErrorType", null);
SPropertyOperations.set(runtimeErrorType, "errorText", "incompatible types");
return runtimeErrorType;
}
SNode type = leastCommonSupertypes.iterator().next();
{
IMatchingPattern pattern_j6k1pf_e0c =
HUtil.createMatchingPatternByConceptFQName(
"jetbrains.mps.baseLanguage.structure.PrimitiveType");
SNode coercedNode_j6k1pf_e0c =
TypeChecker.getInstance().getRuntimeSupport().coerce_(type, pattern_j6k1pf_e0c);
if (coercedNode_j6k1pf_e0c != null) {
return coercedNode_j6k1pf_e0c;
} else {
return type;
}
}
}