private static boolean switchLabelStatementsAreEquivalent(
@NotNull PsiSwitchLabelStatement statement1, @NotNull PsiSwitchLabelStatement statement2) {
if (statement1.isDefaultCase()) {
return statement2.isDefaultCase();
}
if (statement2.isDefaultCase()) {
return false;
}
final PsiExpression caseExpression1 = statement1.getCaseValue();
final PsiExpression caseExpression2 = statement2.getCaseValue();
return expressionsAreEquivalent(caseExpression1, caseExpression2);
}
public boolean satisfiedBy(PsiElement element) {
if (!(element instanceof PsiSwitchStatement)) {
return false;
}
final PsiSwitchStatement switchStatement = (PsiSwitchStatement) element;
final PsiCodeBlock body = switchStatement.getBody();
if (body == null) {
return false;
}
final PsiExpression expression = switchStatement.getExpression();
if (expression == null) {
return false;
}
final PsiType type = expression.getType();
if (!(type instanceof PsiClassType)) {
return false;
}
final PsiClass enumClass = ((PsiClassType) type).resolve();
if (enumClass == null || !enumClass.isEnum()) {
return false;
}
final PsiField[] fields = enumClass.getFields();
final Set<String> enumElements = new HashSet<String>(fields.length);
for (final PsiField field : fields) {
final PsiType fieldType = field.getType();
if (fieldType.equals(type)) {
final String fieldName = field.getName();
enumElements.add(fieldName);
}
}
final PsiStatement[] statements = body.getStatements();
for (PsiStatement statement : statements) {
if (statement instanceof PsiSwitchLabelStatement) {
final PsiSwitchLabelStatement labelStatement = (PsiSwitchLabelStatement) statement;
final PsiExpression value = labelStatement.getCaseValue();
if (value != null) {
final String valueText = value.getText();
enumElements.remove(valueText);
}
}
}
if (enumElements.isEmpty()) {
return false;
}
return !ErrorUtil.containsError(element);
}
