private Pair<PsiVariable, PsiType> findVariable(final PsiElement element) {
PsiVariable variable = null;
if (element instanceof PsiIdentifier) {
if (element.getParent() instanceof PsiVariable) {
variable = (PsiVariable) element.getParent();
}
} else if (element instanceof PsiJavaToken) {
final PsiJavaToken token = (PsiJavaToken) element;
if (token.getTokenType() != JavaTokenType.EQ) return null;
if (token.getParent() instanceof PsiVariable) {
variable = (PsiVariable) token.getParent();
}
}
if (variable == null) {
return null;
}
variableName = variable.getName();
final PsiExpression initializer = variable.getInitializer();
if (initializer == null) return null;
final PsiType variableType = variable.getType();
final PsiType initializerType = initializer.getType();
if (!(variableType instanceof PsiClassType)) return null;
final PsiClassType variableClassType = (PsiClassType) variableType;
if (!variableClassType.isRaw()) return null;
if (!(initializerType instanceof PsiClassType)) return null;
final PsiClassType initializerClassType = (PsiClassType) initializerType;
if (initializerClassType.isRaw()) return null;
final PsiClassType.ClassResolveResult variableResolveResult =
variableClassType.resolveGenerics();
final PsiClassType.ClassResolveResult initializerResolveResult =
initializerClassType.resolveGenerics();
if (initializerResolveResult.getElement() == null) return null;
final PsiSubstitutor targetSubstitutor =
TypeConversionUtil.getClassSubstitutor(
variableResolveResult.getElement(),
initializerResolveResult.getElement(),
initializerResolveResult.getSubstitutor());
if (targetSubstitutor == null) return null;
PsiType type =
JavaPsiFacade.getInstance(variable.getProject())
.getElementFactory()
.createType(variableResolveResult.getElement(), targetSubstitutor);
newTypeName = type.getCanonicalText();
return Pair.create(variable, type);
}
