@Override
public void visitThrowStatement(PsiThrowStatement statement) {
super.visitThrowStatement(statement);
final PsiCatchSection catchSection =
PsiTreeUtil.getParentOfType(statement, PsiCatchSection.class, true, PsiClass.class);
if (catchSection == null) {
return;
}
final PsiParameter parameter = catchSection.getParameter();
if (parameter == null) {
return;
}
@NonNls final String parameterName = parameter.getName();
if (PsiUtil.isIgnoredName(parameterName)) {
return;
}
final PsiExpression exception = statement.getException();
if (exception == null) {
return;
}
if (ignoreCantWrap) {
final PsiType thrownType = exception.getType();
if (thrownType instanceof PsiClassType) {
final PsiClassType classType = (PsiClassType) thrownType;
final PsiClass exceptionClass = classType.resolve();
if (exceptionClass != null) {
final PsiMethod[] constructors = exceptionClass.getConstructors();
final PsiClassType throwableType =
TypeUtils.getType(CommonClassNames.JAVA_LANG_THROWABLE, statement);
boolean canWrap = false;
outer:
for (PsiMethod constructor : constructors) {
final PsiParameterList parameterList = constructor.getParameterList();
final PsiParameter[] parameters = parameterList.getParameters();
for (PsiParameter constructorParameter : parameters) {
final PsiType type = constructorParameter.getType();
if (throwableType.equals(type)) {
canWrap = true;
break outer;
}
}
}
if (!canWrap) {
return;
}
}
}
}
final ReferenceFinder visitor = new ReferenceFinder(parameter);
exception.accept(visitor);
if (visitor.usesParameter()) {
return;
}
registerStatementError(statement);
}
@Override
protected void doFix(Project project, ProblemDescriptor descriptor)
throws IncorrectOperationException {
final PsiType thrownType = myThrown.getType();
if (thrownType == null) {
return;
}
final PsiElement typeElement = descriptor.getPsiElement();
if (typeElement == null) {
return;
}
final PsiElement catchParameter = typeElement.getParent();
if (!(catchParameter instanceof PsiParameter)) {
return;
}
final PsiElement catchBlock = ((PsiParameter) catchParameter).getDeclarationScope();
if (!(catchBlock instanceof PsiCatchSection)) {
return;
}
final PsiCatchSection myBeforeCatchSection = (PsiCatchSection) catchBlock;
final PsiTryStatement myTryStatement = myBeforeCatchSection.getTryStatement();
final JavaCodeStyleManager codeStyleManager = JavaCodeStyleManager.getInstance(project);
final String name =
codeStyleManager.suggestUniqueVariableName("e", myTryStatement.getTryBlock(), false);
final PsiElementFactory factory = JavaPsiFacade.getInstance(project).getElementFactory();
final PsiCatchSection section = factory.createCatchSection(thrownType, name, myTryStatement);
final PsiCatchSection element =
(PsiCatchSection) myTryStatement.addBefore(section, myBeforeCatchSection);
codeStyleManager.shortenClassReferences(element);
if (isOnTheFly()) {
final PsiCodeBlock newBlock = element.getCatchBlock();
assert newBlock != null;
final TextRange range = SurroundWithUtil.getRangeToSelect(newBlock);
final PsiFile file = element.getContainingFile();
final Editor editor = FileEditorManager.getInstance(project).getSelectedTextEditor();
if (editor == null) {
return;
}
final Document document = PsiDocumentManager.getInstance(project).getDocument(file);
if (editor.getDocument() != document) {
return;
}
editor.getCaretModel().moveToOffset(range.getStartOffset());
editor.getScrollingModel().scrollToCaret(ScrollType.RELATIVE);
editor.getSelectionModel().setSelection(range.getStartOffset(), range.getEndOffset());
}
}
@Override
protected void doFix(Project project, ProblemDescriptor descriptor)
throws IncorrectOperationException {
final PsiElement element = descriptor.getPsiElement();
final PsiElement parent = element.getParent();
if (!(parent instanceof PsiCatchSection)) {
return;
}
final PsiCatchSection catchSection = (PsiCatchSection) parent;
final PsiParameter parameter = catchSection.getParameter();
if (parameter == null) {
return;
}
final PsiIdentifier identifier = parameter.getNameIdentifier();
if (identifier == null) {
return;
}
final PsiElementFactory factory = JavaPsiFacade.getInstance(project).getElementFactory();
final PsiIdentifier newIdentifier = factory.createIdentifier("ignored");
identifier.replace(newIdentifier);
}
private void checkCatchSection(PsiCatchSection section) {
final PsiCodeBlock block = section.getCatchBlock();
if (block == null || !isCatchBlockEmpty(block)) {
return;
}
final PsiParameter parameter = section.getParameter();
if (parameter == null) {
return;
}
final PsiIdentifier identifier = parameter.getNameIdentifier();
if (identifier == null) {
return;
}
@NonNls final String parameterName = parameter.getName();
if (m_ignoreIgnoreParameter
&& ("ignore".equals(parameterName) || "ignored".equals(parameterName))) {
return;
}
final PsiElement catchToken = section.getFirstChild();
if (catchToken == null) {
return;
}
registerError(catchToken);
}