@Nullable
private LocalQuickFix[] createNPEFixes(
PsiExpression qualifier, PsiExpression expression, boolean onTheFly) {
if (qualifier == null || expression == null) return null;
if (qualifier instanceof PsiMethodCallExpression) return null;
try {
final List<LocalQuickFix> fixes = new SmartList<LocalQuickFix>();
if (!(qualifier instanceof PsiLiteralExpression
&& ((PsiLiteralExpression) qualifier).getValue() == null)) {
if (PsiUtil.getLanguageLevel(qualifier).isAtLeast(LanguageLevel.JDK_1_4)) {
final Project project = qualifier.getProject();
final PsiElementFactory elementFactory =
JavaPsiFacade.getInstance(project).getElementFactory();
final PsiBinaryExpression binary =
(PsiBinaryExpression) elementFactory.createExpressionFromText("a != null", null);
binary.getLOperand().replace(qualifier);
ContainerUtil.addIfNotNull(fixes, createAssertFix(binary, expression));
}
addSurroundWithIfFix(qualifier, fixes, onTheFly);
if (ReplaceWithTernaryOperatorFix.isAvailable(qualifier, expression)) {
fixes.add(new ReplaceWithTernaryOperatorFix(qualifier));
}
}
ContainerUtil.addIfNotNull(
fixes, DfaOptionalSupport.registerReplaceOptionalOfWithOfNullableFix(qualifier));
return fixes.isEmpty() ? null : fixes.toArray(new LocalQuickFix[fixes.size()]);
} catch (IncorrectOperationException e) {
LOG.error(e);
return null;
}
}
