@Nullable private PsiMethod collectExceptions(List<PsiClassType> unhandled) { PsiElement targetElement = null; PsiMethod targetMethod = null; final PsiElement psiElement = myWrongElement instanceof PsiMethodReferenceExpression ? myWrongElement : PsiTreeUtil.getParentOfType( myWrongElement, PsiFunctionalExpression.class, PsiMethod.class); if (psiElement instanceof PsiFunctionalExpression) { targetMethod = LambdaUtil.getFunctionalInterfaceMethod(psiElement); targetElement = psiElement instanceof PsiLambdaExpression ? ((PsiLambdaExpression) psiElement).getBody() : psiElement; } else if (psiElement instanceof PsiMethod) { targetMethod = (PsiMethod) psiElement; targetElement = psiElement; } if (targetElement == null || targetMethod == null || !targetMethod.getThrowsList().isPhysical()) return null; List<PsiClassType> exceptions = getUnhandledExceptions(myWrongElement, targetElement, targetMethod); if (exceptions == null || exceptions.isEmpty()) return null; unhandled.addAll(exceptions); return targetMethod; }
@Nullable private static PsiMethod getScopeMethod(PsiElement block) { PsiElement parent = block.getParent(); if (parent instanceof PsiMethod) return (PsiMethod) parent; if (parent instanceof PsiLambdaExpression) return LambdaUtil.getFunctionalInterfaceMethod( ((PsiLambdaExpression) parent).getFunctionalInterfaceType()); return null; }