public static boolean checkSideEffects(
PsiElement element, PsiVariable variable, List<PsiElement> sideEffects) {
if (sideEffects == null || element == null) return false;
if (element instanceof PsiMethodCallExpression) {
final PsiMethod psiMethod = ((PsiMethodCallExpression) element).resolveMethod();
if (psiMethod == null
|| !PropertyUtil.isSimpleGetter(psiMethod) && !PropertyUtil.isSimpleSetter(psiMethod)) {
sideEffects.add(element);
return true;
}
}
if (element instanceof PsiNewExpression) {
PsiNewExpression newExpression = (PsiNewExpression) element;
if (newExpression.getArrayDimensions().length == 0
&& newExpression.getArrayInitializer() == null
&& !isSideEffectFreeConstructor(newExpression)) {
sideEffects.add(element);
return true;
}
}
if (element instanceof PsiAssignmentExpression
&& !(((PsiAssignmentExpression) element).getLExpression() instanceof PsiReferenceExpression
&& ((PsiReferenceExpression) ((PsiAssignmentExpression) element).getLExpression())
.resolve()
== variable)) {
sideEffects.add(element);
return true;
}
PsiElement[] children = element.getChildren();
for (PsiElement child : children) {
checkSideEffects(child, variable, sideEffects);
}
return !sideEffects.isEmpty();
}
private static boolean newExpressionsAreEquivalent(
@NotNull PsiNewExpression newExpression1, @NotNull PsiNewExpression newExpression2) {
final PsiJavaCodeReferenceElement classReference1 = newExpression1.getClassReference();
final PsiJavaCodeReferenceElement classReference2 = newExpression2.getClassReference();
if (classReference1 == null || classReference2 == null) {
return false;
}
final String text = classReference1.getText();
if (!text.equals(classReference2.getText())) {
return false;
}
final PsiExpression[] arrayDimensions1 = newExpression1.getArrayDimensions();
final PsiExpression[] arrayDimensions2 = newExpression2.getArrayDimensions();
if (!expressionListsAreEquivalent(arrayDimensions1, arrayDimensions2)) {
return false;
}
final PsiArrayInitializerExpression arrayInitializer1 = newExpression1.getArrayInitializer();
final PsiArrayInitializerExpression arrayInitializer2 = newExpression2.getArrayInitializer();
if (!expressionsAreEquivalent(arrayInitializer1, arrayInitializer2)) {
return false;
}
final PsiExpression qualifier1 = newExpression1.getQualifier();
final PsiExpression qualifier2 = newExpression2.getQualifier();
if (!expressionsAreEquivalent(qualifier1, qualifier2)) {
return false;
}
final PsiExpressionList argumentList1 = newExpression1.getArgumentList();
final PsiExpression[] args1;
if (argumentList1 == null) {
args1 = null;
} else {
args1 = argumentList1.getExpressions();
}
final PsiExpressionList argumentList2 = newExpression2.getArgumentList();
final PsiExpression[] args2;
if (argumentList2 == null) {
args2 = null;
} else {
args2 = argumentList2.getExpressions();
}
return expressionListsAreEquivalent(args1, args2);
}
static boolean isComplexArrayExpression(PsiExpression expression) {
expression = ParenthesesUtils.stripParentheses(expression);
if (expression == null) {
return false;
}
if (expression instanceof PsiNewExpression) {
final PsiNewExpression newExpression = (PsiNewExpression) expression;
final PsiArrayInitializerExpression arrayInitializer = newExpression.getArrayInitializer();
return isComplexArrayExpression(arrayInitializer);
} else if (expression instanceof PsiArrayInitializerExpression) {
final PsiArrayInitializerExpression arrayInitializerExpression =
(PsiArrayInitializerExpression) expression;
for (PsiExpression initializer : arrayInitializerExpression.getInitializers()) {
if (isComplexArrayExpression(initializer)) {
return true;
}
}
return false;
} else if (expression instanceof PsiReferenceExpression) {
return expression.getType() instanceof PsiArrayType;
} else if (expression instanceof PsiArrayAccessExpression) {
return true;
} else if (expression instanceof PsiTypeCastExpression) {
final PsiTypeCastExpression typeCastExpression = (PsiTypeCastExpression) expression;
return isComplexArrayExpression(typeCastExpression.getOperand());
} else if (expression instanceof PsiConditionalExpression) {
final PsiConditionalExpression conditionalExpression =
(PsiConditionalExpression) expression;
return isComplexArrayExpression(conditionalExpression.getThenExpression())
|| isComplexArrayExpression(conditionalExpression.getElseExpression());
} else if (expression instanceof PsiMethodCallExpression) {
final PsiMethodCallExpression methodCallExpression = (PsiMethodCallExpression) expression;
final PsiMethod method = methodCallExpression.resolveMethod();
if (method == null) {
return true;
}
if (CloneUtils.isClone(method)) {
return false;
}
@NonNls final String name = method.getName();
if ("copyOf".equals(name) || "copyOfRange".equals(name)) {
final PsiClass aClass = method.getContainingClass();
if (aClass != null
&& CommonClassNames.JAVA_UTIL_ARRAYS.equals(aClass.getQualifiedName())) {
return false;
}
} else if ("toArray".equals(name)
&& InheritanceUtil.isInheritor(method.getContainingClass(), "java.util.Collection")) {
return false;
}
return true;
}
return true;
}
static boolean isSimpleArrayExpression(PsiExpression initializer) {
if (initializer == null) {
return true;
}
if (initializer instanceof PsiNewExpression) {
final PsiNewExpression newExpression = (PsiNewExpression) initializer;
final PsiArrayInitializerExpression arrayInitializer = newExpression.getArrayInitializer();
return arrayInitializer == null || isSimpleArrayExpression(arrayInitializer);
}
if (initializer instanceof PsiArrayInitializerExpression) {
final PsiArrayInitializerExpression arrayInitializerExpression =
(PsiArrayInitializerExpression) initializer;
final PsiExpression[] initializers = arrayInitializerExpression.getInitializers();
return initializers.length == 0;
}
return false;
}
private static void removeParensFromNewExpression(
@NotNull PsiNewExpression newExpression, boolean ignoreClarifyingParentheses) {
final PsiExpression[] dimensions = newExpression.getArrayDimensions();
for (PsiExpression dimension : dimensions) {
removeParentheses(dimension, ignoreClarifyingParentheses);
}
final PsiExpression qualifier = newExpression.getQualifier();
if (qualifier != null) {
removeParentheses(qualifier, ignoreClarifyingParentheses);
}
final PsiExpression arrayInitializer = newExpression.getArrayInitializer();
if (arrayInitializer != null) {
removeParentheses(arrayInitializer, ignoreClarifyingParentheses);
}
final PsiExpressionList argumentList = newExpression.getArgumentList();
if (argumentList != null) {
final PsiExpression[] arguments = argumentList.getExpressions();
for (PsiExpression argument : arguments) {
removeParentheses(argument, ignoreClarifyingParentheses);
}
}
}
// This methods works equally well for primary usages as well as for propagated callers' usages
private static void fixActualArgumentsList(
PsiExpressionList list,
JavaChangeInfo changeInfo,
boolean toInsertDefaultValue,
PsiSubstitutor substitutor)
throws IncorrectOperationException {
final PsiElementFactory factory =
JavaPsiFacade.getInstance(list.getProject()).getElementFactory();
if (changeInfo.isParameterSetOrOrderChanged()) {
if (changeInfo instanceof JavaChangeInfoImpl
&& ((JavaChangeInfoImpl) changeInfo).isPropagationEnabled) {
final ParameterInfoImpl[] createdParmsInfo =
((JavaChangeInfoImpl) changeInfo).getCreatedParmsInfoWithoutVarargs();
for (ParameterInfoImpl info : createdParmsInfo) {
PsiExpression newArg;
if (toInsertDefaultValue) {
newArg = createDefaultValue(changeInfo, factory, info, list);
} else {
newArg = factory.createExpressionFromText(info.getName(), list);
}
JavaCodeStyleManager.getInstance(list.getProject())
.shortenClassReferences(list.add(newArg));
}
} else {
final PsiExpression[] args = list.getExpressions();
final int nonVarargCount = getNonVarargCount(changeInfo, args);
final int varargCount = args.length - nonVarargCount;
if (varargCount < 0) return;
PsiExpression[] newVarargInitializers = null;
final int newArgsLength;
final int newNonVarargCount;
final JavaParameterInfo[] newParms = changeInfo.getNewParameters();
if (changeInfo.isArrayToVarargs()) {
newNonVarargCount = newParms.length - 1;
final JavaParameterInfo lastNewParm = newParms[newParms.length - 1];
final PsiExpression arrayToConvert = args[lastNewParm.getOldIndex()];
if (arrayToConvert instanceof PsiNewExpression) {
final PsiNewExpression expression = (PsiNewExpression) arrayToConvert;
final PsiArrayInitializerExpression arrayInitializer = expression.getArrayInitializer();
if (arrayInitializer != null) {
newVarargInitializers = arrayInitializer.getInitializers();
}
}
newArgsLength =
newVarargInitializers == null
? newParms.length
: newNonVarargCount + newVarargInitializers.length;
} else if (changeInfo.isRetainsVarargs()) {
newNonVarargCount = newParms.length - 1;
newArgsLength = newNonVarargCount + varargCount;
} else if (changeInfo.isObtainsVarags()) {
newNonVarargCount = newParms.length - 1;
newArgsLength = newNonVarargCount;
} else {
newNonVarargCount = newParms.length;
newArgsLength = newParms.length;
}
String[] oldVarargs = null;
if (changeInfo.wasVararg() && !changeInfo.isRetainsVarargs()) {
oldVarargs = new String[varargCount];
for (int i = nonVarargCount; i < args.length; i++) {
oldVarargs[i - nonVarargCount] = args[i].getText();
}
}
final PsiExpression[] newArgs = new PsiExpression[newArgsLength];
for (int i = 0; i < newNonVarargCount; i++) {
if (newParms[i].getOldIndex() == nonVarargCount && oldVarargs != null) {
PsiType type = newParms[i].createType(changeInfo.getMethod(), list.getManager());
if (type instanceof PsiArrayType) {
type = substitutor.substitute(type);
type = TypeConversionUtil.erasure(type);
String typeText = type.getCanonicalText();
if (type instanceof PsiEllipsisType) {
typeText = typeText.replace("...", "[]");
}
String text = "new " + typeText + "{" + StringUtil.join(oldVarargs, ",") + "}";
newArgs[i] = factory.createExpressionFromText(text, changeInfo.getMethod());
continue;
}
}
newArgs[i] =
createActualArgument(changeInfo, list, newParms[i], toInsertDefaultValue, args);
}
if (changeInfo.isArrayToVarargs()) {
if (newVarargInitializers == null) {
newArgs[newNonVarargCount] =
createActualArgument(
changeInfo, list, newParms[newNonVarargCount], toInsertDefaultValue, args);
} else {
System.arraycopy(
newVarargInitializers, 0, newArgs, newNonVarargCount, newVarargInitializers.length);
}
} else {
final int newVarargCount = newArgsLength - newNonVarargCount;
LOG.assertTrue(newVarargCount == 0 || newVarargCount == varargCount);
for (int i = newNonVarargCount; i < newArgsLength; i++) {
final int oldIndex = newParms[newNonVarargCount].getOldIndex();
if (oldIndex >= 0 && oldIndex != nonVarargCount) {
newArgs[i] =
createActualArgument(
changeInfo, list, newParms[newNonVarargCount], toInsertDefaultValue, args);
} else {
System.arraycopy(args, nonVarargCount, newArgs, newNonVarargCount, newVarargCount);
break;
}
}
}
ChangeSignatureUtil.synchronizeList(
list, Arrays.asList(newArgs), ExpressionList.INSTANCE, changeInfo.toRemoveParm());
}
}
}
