public static boolean checkWhenExpressionHasSingleElse(
@NotNull JetWhenExpression whenExpression) {
int elseCount = 0;
for (JetWhenEntry entry : whenExpression.getEntries()) {
if (entry.isElse()) {
elseCount++;
}
}
return (elseCount == 1);
}
@Nullable
public static <T extends PsiElement> T getDirectParentOfTypeForBlock(
@NotNull JetBlockExpression block, @NotNull Class<T> aClass) {
T parent = PsiTreeUtil.getParentOfType(block, aClass);
if (parent instanceof JetIfExpression) {
JetIfExpression ifExpression = (JetIfExpression) parent;
if (ifExpression.getElse() == block || ifExpression.getThen() == block) {
return parent;
}
}
if (parent instanceof JetWhenExpression) {
JetWhenExpression whenExpression = (JetWhenExpression) parent;
for (JetWhenEntry whenEntry : whenExpression.getEntries()) {
if (whenEntry.getExpression() == block) {
return parent;
}
}
}
if (parent instanceof JetFunctionLiteral) {
JetFunctionLiteral functionLiteral = (JetFunctionLiteral) parent;
if (functionLiteral.getBodyExpression() == block) {
return parent;
}
}
if (parent instanceof JetTryExpression) {
JetTryExpression tryExpression = (JetTryExpression) parent;
if (tryExpression.getTryBlock() == block) {
return parent;
}
for (JetCatchClause clause : tryExpression.getCatchClauses()) {
if (clause.getCatchBody() == block) {
return parent;
}
}
}
return null;
}