private static boolean checkFoldableWhenExpressionWithReturns(JetWhenExpression whenExpression) {
if (!JetPsiUtil.checkWhenExpressionHasSingleElse(whenExpression)) return false;
List<JetWhenEntry> entries = whenExpression.getEntries();
if (entries.isEmpty()) return false;
for (JetWhenEntry entry : entries) {
if (getFoldableBranchedReturn(entry.getExpression()) == null) return false;
}
return true;
}
private static boolean checkFoldableWhenExpressionWithAssignments(
JetWhenExpression whenExpression) {
if (!JetPsiUtil.checkWhenExpressionHasSingleElse(whenExpression)) return false;
List<JetWhenEntry> entries = whenExpression.getEntries();
if (entries.isEmpty()) return false;
List<JetBinaryExpression> assignments = new ArrayList<JetBinaryExpression>();
for (JetWhenEntry entry : entries) {
JetBinaryExpression assignment = getFoldableBranchedAssignment(entry.getExpression());
if (assignment == null) return false;
assignments.add(assignment);
}
assert !assignments.isEmpty();
JetBinaryExpression firstAssignment = assignments.get(0);
for (JetBinaryExpression assignment : assignments) {
if (!checkAssignmentsMatch(assignment, firstAssignment)) return false;
}
return true;
}