boolean (@NotNull PsiReturnStatement statement, boolean ignoreInThenBranch, boolean checkReturnType, @Nullable Ref<? super Boolean> isInConstructorRef) { if (statement.getReturnValue() != null) { return false; } final PsiElement methodParent = PsiTreeUtil.getParentOfType(statement, PsiMethod.class, PsiLambdaExpression.class); PsiCodeBlock codeBlock = null; if (methodParent instanceof PsiMethod method) { codeBlock = method.getBody(); if (isInConstructorRef != null) { isInConstructorRef.set(method.isConstructor()); } if (checkReturnType && !method.isConstructor() && !PsiTypes.voidType().equals(method.getReturnType())) { return false; } } else if (methodParent instanceof PsiLambdaExpression lambdaExpression) { if (isInConstructorRef != null) { isInConstructorRef.set(false); } if (checkReturnType && !PsiTypes.voidType().equals(LambdaUtil.getFunctionalInterfaceReturnType(lambdaExpression))) { return false; } final PsiElement lambdaBody = lambdaExpression.getBody(); if (lambdaBody instanceof PsiCodeBlock) { codeBlock = (PsiCodeBlock)lambdaBody; } } else { return false; } if (codeBlock == null) { return false; } if (!ControlFlowUtils.blockCompletesWithStatement(codeBlock, statement) || ControlFlowUtils.isInFinallyBlock(statement, null)) { return false; } if (ignoreInThenBranch && isInThenBranch(statement)) { return false; } return true; }