@NotNull
private PsiSubstitutor mapSubstitutor(
PsiClass originalClass, PsiClass mappedClass, PsiSubstitutor substitutor) {
PsiTypeParameter[] typeParameters = mappedClass.getTypeParameters();
PsiTypeParameter[] originalTypeParameters = originalClass.getTypeParameters();
if (typeParameters.length != originalTypeParameters.length) {
if (originalTypeParameters.length == 0) {
return JavaPsiFacade.getElementFactory(mappedClass.getProject())
.createRawSubstitutor(mappedClass);
}
return substitutor;
}
Map<PsiTypeParameter, PsiType> substitutionMap = substitutor.getSubstitutionMap();
PsiSubstitutor mappedSubstitutor = PsiSubstitutor.EMPTY;
for (int i = 0; i < originalTypeParameters.length; i++) {
if (!substitutionMap.containsKey(originalTypeParameters[i])) continue;
PsiType originalSubstitute = substitutor.substitute(originalTypeParameters[i]);
if (originalSubstitute != null) {
PsiType substitute = mapType(originalSubstitute);
if (substitute == null) return substitutor;
mappedSubstitutor = mappedSubstitutor.put(typeParameters[i], substitute);
} else {
mappedSubstitutor = mappedSubstitutor.put(typeParameters[i], null);
}
}
if (mappedClass.hasModifierProperty(PsiModifier.STATIC)) {
return mappedSubstitutor;
}
PsiClass mappedContaining = mappedClass.getContainingClass();
PsiClass originalContaining = originalClass.getContainingClass();
//noinspection DoubleNegation
if ((mappedContaining != null) != (originalContaining != null)) {
return substitutor;
}
if (mappedContaining != null) {
return mappedSubstitutor.putAll(
mapSubstitutor(originalContaining, mappedContaining, substitutor));
}
return mappedSubstitutor;
}
