@Override
public void invoke(@NotNull Project project, Editor editor, @NotNull PsiElement element)
throws IncorrectOperationException {
try {
if (!FileModificationService.getInstance().preparePsiElementForWrite(element)) return;
final PsiJavaToken token = (PsiJavaToken) element;
final PsiPolyadicExpression expression =
SplitConditionUtil.findCondition(element, true, false);
final PsiLambdaExpression lambdaExpression =
PsiTreeUtil.getParentOfType(expression, PsiLambdaExpression.class);
LOG.assertTrue(lambdaExpression != null);
final String lambdaParameterName =
lambdaExpression.getParameterList().getParameters()[0].getName();
final PsiMethodCallExpression methodCallExpression =
PsiTreeUtil.getParentOfType(expression, PsiMethodCallExpression.class);
LOG.assertTrue(methodCallExpression != null, expression);
PsiExpression lOperand = getLOperands(expression, token);
PsiExpression rOperand = getROperands(expression, token);
final Collection<PsiComment> comments =
PsiTreeUtil.findChildrenOfType(expression, PsiComment.class);
final PsiMethodCallExpression chainedCall =
(PsiMethodCallExpression)
JavaPsiFacade.getElementFactory(project)
.createExpressionFromText(
"a.filter(" + lambdaParameterName + " -> x)", expression);
final PsiExpression argExpression = chainedCall.getArgumentList().getExpressions()[0];
final PsiElement rReplaced =
((PsiLambdaExpression) argExpression).getBody().replace(rOperand);
final PsiExpression compoundArg = methodCallExpression.getArgumentList().getExpressions()[0];
final int separatorOffset = token.getTextOffset();
for (PsiComment comment : comments) {
if (comment.getTextOffset() < separatorOffset) {
compoundArg.getParent().add(comment);
} else {
rReplaced.getParent().add(comment);
}
}
((PsiLambdaExpression) compoundArg).getBody().replace(lOperand);
chainedCall.getMethodExpression().getQualifierExpression().replace(methodCallExpression);
methodCallExpression.replace(chainedCall);
} catch (IncorrectOperationException e) {
LOG.error(e);
}
}
static String createContainsExpressionText(
@NotNull PsiMethodCallExpression call, @NotNull PsiJavaToken sign, boolean flipped) {
final IElementType tokenType = sign.getTokenType();
final PsiReferenceExpression methodExpression = call.getMethodExpression();
final PsiExpression qualifierExpression = methodExpression.getQualifierExpression();
final String qualifierText;
if (qualifierExpression == null) {
qualifierText = "";
} else {
qualifierText = qualifierExpression.getText();
}
final PsiExpressionList argumentList = call.getArgumentList();
final PsiExpression expression = argumentList.getExpressions()[0];
@NonNls
final String newExpressionText = qualifierText + ".contains(" + expression.getText() + ')';
if (tokenType.equals(JavaTokenType.EQEQ)) {
return '!' + newExpressionText;
} else if (!flipped
&& (tokenType.equals(JavaTokenType.LT) || tokenType.equals(JavaTokenType.LE))) {
return '!' + newExpressionText;
} else if (flipped
&& (tokenType.equals(JavaTokenType.GT) || tokenType.equals(JavaTokenType.GE))) {
return '!' + newExpressionText;
}
return newExpressionText;
}
private Pair<PsiVariable, PsiType> findVariable(final PsiElement element) {
PsiVariable variable = null;
if (element instanceof PsiIdentifier) {
if (element.getParent() instanceof PsiVariable) {
variable = (PsiVariable) element.getParent();
}
} else if (element instanceof PsiJavaToken) {
final PsiJavaToken token = (PsiJavaToken) element;
if (token.getTokenType() != JavaTokenType.EQ) return null;
if (token.getParent() instanceof PsiVariable) {
variable = (PsiVariable) token.getParent();
}
}
if (variable == null) {
return null;
}
variableName = variable.getName();
final PsiExpression initializer = variable.getInitializer();
if (initializer == null) return null;
final PsiType variableType = variable.getType();
final PsiType initializerType = initializer.getType();
if (!(variableType instanceof PsiClassType)) return null;
final PsiClassType variableClassType = (PsiClassType) variableType;
if (!variableClassType.isRaw()) return null;
if (!(initializerType instanceof PsiClassType)) return null;
final PsiClassType initializerClassType = (PsiClassType) initializerType;
if (initializerClassType.isRaw()) return null;
final PsiClassType.ClassResolveResult variableResolveResult =
variableClassType.resolveGenerics();
final PsiClassType.ClassResolveResult initializerResolveResult =
initializerClassType.resolveGenerics();
if (initializerResolveResult.getElement() == null) return null;
final PsiSubstitutor targetSubstitutor =
TypeConversionUtil.getClassSubstitutor(
variableResolveResult.getElement(),
initializerResolveResult.getElement(),
initializerResolveResult.getSubstitutor());
if (targetSubstitutor == null) return null;
PsiType type =
JavaPsiFacade.getInstance(variable.getProject())
.getElementFactory()
.createType(variableResolveResult.getElement(), targetSubstitutor);
newTypeName = type.getCanonicalText();
return Pair.create(variable, type);
}
public static @NotNull PsiType getOOType(PsiType left, PsiType right, PsiJavaToken op) {
if (op == null) return NoType;
String methodname = OOMethods.binary.get(op.getText());
if (methodname != null && right != null) {
PsiType res = resolveMethod(left, methodname, right);
if (res == null) res = resolveMethod(right, methodname + OOMethods.revSuffix, left);
if (res != null)
if (OOMethods.compareTo.equals(methodname)) return PsiType.BOOLEAN;
else return res;
}
return NoType;
}
public static boolean areParenthesesNeeded(PsiJavaToken sign, PsiExpression rhs) {
if (rhs instanceof PsiPolyadicExpression) {
final PsiPolyadicExpression binaryExpression = (PsiPolyadicExpression) rhs;
final int precedence1 = getPrecedenceForOperator(binaryExpression.getOperationTokenType());
final IElementType signTokenType = sign.getTokenType();
final IElementType newOperatorToken = tokenMap.get(signTokenType);
final int precedence2 = getPrecedenceForOperator(newOperatorToken);
return precedence1 >= precedence2 || !isCommutativeOperator(newOperatorToken);
} else {
return rhs instanceof PsiConditionalExpression;
}
}
private void checkSetterNeeded(final PsiExpression operand, final PsiJavaToken sign) {
final IElementType tokenType = sign.getTokenType();
if (!tokenType.equals(JavaTokenType.PLUSPLUS)
&& !tokenType.equals(JavaTokenType.MINUSMINUS)) {
return;
}
if (isProhibitedReference(operand)) {
final PsiField field = getReferencedField(operand);
if (!hasSetter(field) && !isStaticFinal(field)) {
fieldsNeedingSetter.add(field);
}
}
}
@Override
public void visitPostfixExpression(@NotNull PsiPostfixExpression postfixExpression) {
if (read || written) {
return;
}
super.visitPostfixExpression(postfixExpression);
final PsiJavaToken operationSign = postfixExpression.getOperationSign();
final IElementType tokenType = operationSign.getTokenType();
if (!tokenType.equals(JavaTokenType.PLUSPLUS)
&& !tokenType.equals(JavaTokenType.MINUSMINUS)) {
return;
}
final PsiExpression operand = postfixExpression.getOperand();
if (!(operand instanceof PsiReferenceExpression)) {
return;
}
final PsiReferenceExpression referenceExpression = (PsiReferenceExpression) operand;
final PsiElement target = referenceExpression.resolve();
if (!variable.equals(target)) {
return;
}
written = true;
}
@Nullable
private static String buildFromOffsetText(PsiExpression expression, PsiLocalVariable variable)
throws IncorrectOperationException {
expression = ParenthesesUtils.stripParentheses(expression);
if (expression == null) {
return null;
}
final String expressionText = expression.getText();
final String variableName = variable.getName();
if (expressionText.equals(variableName)) {
final PsiExpression initialValue = variable.getInitializer();
if (initialValue == null) {
return null;
}
return initialValue.getText();
}
if (expression instanceof PsiBinaryExpression) {
final PsiBinaryExpression binaryExpression = (PsiBinaryExpression) expression;
final PsiExpression lhs = binaryExpression.getLOperand();
final PsiExpression rhs = binaryExpression.getROperand();
final String rhsText = buildFromOffsetText(rhs, variable);
final PsiJavaToken sign = binaryExpression.getOperationSign();
final IElementType tokenType = sign.getTokenType();
if (ExpressionUtils.isZero(lhs)) {
if (tokenType.equals(JavaTokenType.MINUS)) {
return '-' + rhsText;
}
return rhsText;
}
final String lhsText = buildFromOffsetText(lhs, variable);
if (ExpressionUtils.isZero(rhs)) {
return lhsText;
}
return collapseConstant(lhsText + sign.getText() + rhsText, variable);
}
return collapseConstant(expression.getText(), variable);
}
@Nullable
public static PsiExpression findExpressionInRange(PsiFile file, int startOffset, int endOffset) {
if (!file.getViewProvider().getLanguages().contains(StdLanguages.JAVA)) return null;
PsiExpression expression =
findElementInRange(file, startOffset, endOffset, PsiExpression.class);
if (expression == null && findStatementsInRange(file, startOffset, endOffset).length == 0) {
PsiElement element2 = file.getViewProvider().findElementAt(endOffset - 1, StdLanguages.JAVA);
if (element2 instanceof PsiJavaToken) {
final PsiJavaToken token = (PsiJavaToken) element2;
final IElementType tokenType = token.getTokenType();
if (tokenType.equals(JavaTokenType.SEMICOLON)) {
expression =
findElementInRange(
file, startOffset, element2.getTextRange().getStartOffset(), PsiExpression.class);
}
}
}
if (expression == null && findStatementsInRange(file, startOffset, endOffset).length == 0) {
PsiElement element =
PsiTreeUtil.skipSiblingsBackward(file.findElementAt(endOffset), PsiWhiteSpace.class);
if (element != null) {
element =
PsiTreeUtil.skipSiblingsBackward(
element.getLastChild(), PsiWhiteSpace.class, PsiComment.class);
if (element != null) {
final int newEndOffset = element.getTextRange().getEndOffset();
if (newEndOffset < endOffset) {
expression = findExpressionInRange(file, startOffset, newEndOffset);
}
}
}
}
if (expression instanceof PsiReferenceExpression
&& expression.getParent() instanceof PsiMethodCallExpression) return null;
return expression;
}
@Nullable
static PsiPolyadicExpression getSubexpression(
PsiPolyadicExpression expression, PsiJavaToken token) {
final PsiExpression[] operands = expression.getOperands();
if (operands.length == 2) {
return expression;
}
for (int i = 1; i < operands.length; i++) {
final PsiExpression operand = operands[i];
final PsiJavaToken currentToken = expression.getTokenBeforeOperand(operand);
if (currentToken == token) {
final String binaryExpressionText =
operands[i - 1].getText() + ' ' + token.getText() + ' ' + operand.getText();
final PsiElementFactory factory = JavaPsiFacade.getElementFactory(expression.getProject());
return (PsiPolyadicExpression)
factory.createExpressionFromText(binaryExpressionText, expression);
}
}
return null;
}
private static boolean canBeReplacedByContains(
PsiExpression lhs, PsiJavaToken sign, PsiExpression rhs, boolean flipped) {
final PsiMethodCallExpression callExpression = (PsiMethodCallExpression) lhs;
if (!isIndexOfCall(callExpression)) {
return false;
}
final Object object = ExpressionUtils.computeConstantExpression(rhs);
if (!(object instanceof Integer)) {
return false;
}
final Integer integer = (Integer) object;
final int constant = integer.intValue();
final IElementType tokenType = sign.getTokenType();
if (flipped) {
if (constant == -1
&& (JavaTokenType.NE.equals(tokenType)
|| JavaTokenType.LT.equals(tokenType)
|| JavaTokenType.EQEQ.equals(tokenType)
|| JavaTokenType.GE.equals(tokenType))) {
return true;
} else if (constant == 0
&& (JavaTokenType.LE.equals(tokenType) || JavaTokenType.GT.equals(tokenType))) {
return true;
}
} else {
if (constant == -1
&& (JavaTokenType.NE.equals(tokenType)
|| JavaTokenType.GT.equals(tokenType)
|| JavaTokenType.EQEQ.equals(tokenType)
|| JavaTokenType.LE.equals(tokenType))) {
return true;
} else if (constant == 0
&& (JavaTokenType.GE.equals(tokenType) || JavaTokenType.LT.equals(tokenType))) {
return true;
}
}
return false;
}
public List<TextRange> select(
PsiElement e, CharSequence editorText, int cursorOffset, Editor editor) {
List<TextRange> result = new ArrayList<TextRange>();
PsiElement parent = e.getParent();
if (!(parent instanceof PsiCodeBlock) && !(parent instanceof PsiBlockStatement)
|| parent instanceof JspCodeBlock) {
return result;
}
PsiElement startElement = e;
PsiElement endElement = e;
while (startElement.getPrevSibling() != null) {
PsiElement sibling = startElement.getPrevSibling();
if (sibling instanceof PsiJavaToken) {
PsiJavaToken token = (PsiJavaToken) sibling;
if (token.getTokenType() == JavaTokenType.LBRACE) {
break;
}
}
if (sibling instanceof PsiWhiteSpace) {
PsiWhiteSpace whiteSpace = (PsiWhiteSpace) sibling;
String[] strings = LineTokenizer.tokenize(whiteSpace.getText().toCharArray(), false);
if (strings.length > 2) {
break;
}
}
startElement = sibling;
}
while (startElement instanceof PsiWhiteSpace) {
startElement = startElement.getNextSibling();
}
while (endElement.getNextSibling() != null) {
PsiElement sibling = endElement.getNextSibling();
if (sibling instanceof PsiJavaToken) {
PsiJavaToken token = (PsiJavaToken) sibling;
if (token.getTokenType() == JavaTokenType.RBRACE) {
break;
}
}
if (sibling instanceof PsiWhiteSpace) {
PsiWhiteSpace whiteSpace = (PsiWhiteSpace) sibling;
String[] strings = LineTokenizer.tokenize(whiteSpace.getText().toCharArray(), false);
if (strings.length > 2) {
break;
}
}
endElement = sibling;
}
while (endElement instanceof PsiWhiteSpace) {
endElement = endElement.getPrevSibling();
}
result.addAll(
expandToWholeLine(
editorText,
new TextRange(
startElement.getTextRange().getStartOffset(),
endElement.getTextRange().getEndOffset())));
return result;
}
public boolean processUsage(
@NotNull EncapsulateFieldUsageInfo usage,
@NotNull EncapsulateFieldsDescriptor descriptor,
PsiMethod setter,
PsiMethod getter) {
final PsiElement element = usage.getElement();
if (!(element instanceof PsiReferenceExpression)) return false;
final FieldDescriptor fieldDescriptor = usage.getFieldDescriptor();
PsiField field = fieldDescriptor.getField();
boolean processGet = descriptor.isToEncapsulateGet();
boolean processSet =
descriptor.isToEncapsulateSet() && !field.hasModifierProperty(PsiModifier.FINAL);
if (!processGet && !processSet) return true;
PsiElementFactory factory =
JavaPsiFacade.getInstance(descriptor.getTargetClass().getProject()).getElementFactory();
try {
final PsiReferenceExpression expr = (PsiReferenceExpression) element;
final PsiElement parent = expr.getParent();
if (parent instanceof PsiAssignmentExpression
&& expr.equals(((PsiAssignmentExpression) parent).getLExpression())) {
PsiAssignmentExpression assignment = (PsiAssignmentExpression) parent;
if (assignment.getRExpression() == null) return true;
PsiJavaToken opSign = assignment.getOperationSign();
IElementType opType = opSign.getTokenType();
if (opType == JavaTokenType.EQ) {
{
if (!processSet) return true;
final PsiExpression setterArgument = assignment.getRExpression();
PsiMethodCallExpression methodCall =
createSetterCall(
fieldDescriptor, setterArgument, expr, descriptor.getTargetClass(), setter);
if (methodCall != null) {
assignment.replace(methodCall);
}
// TODO: check if value is used!!!
}
} else if (opType == JavaTokenType.ASTERISKEQ
|| opType == JavaTokenType.DIVEQ
|| opType == JavaTokenType.PERCEQ
|| opType == JavaTokenType.PLUSEQ
|| opType == JavaTokenType.MINUSEQ
|| opType == JavaTokenType.LTLTEQ
|| opType == JavaTokenType.GTGTEQ
|| opType == JavaTokenType.GTGTGTEQ
|| opType == JavaTokenType.ANDEQ
|| opType == JavaTokenType.OREQ
|| opType == JavaTokenType.XOREQ) {
{
// Q: side effects of qualifier??!
String opName = opSign.getText();
LOG.assertTrue(StringUtil.endsWithChar(opName, '='));
opName = opName.substring(0, opName.length() - 1);
PsiExpression getExpr = expr;
if (processGet) {
final PsiMethodCallExpression getterCall =
createGetterCall(fieldDescriptor, expr, descriptor.getTargetClass(), getter);
if (getterCall != null) {
getExpr = getterCall;
}
}
@NonNls String text = "a" + opName + "b";
PsiBinaryExpression binExpr =
(PsiBinaryExpression) factory.createExpressionFromText(text, expr);
binExpr.getLOperand().replace(getExpr);
binExpr.getROperand().replace(assignment.getRExpression());
PsiExpression setExpr;
if (processSet) {
setExpr =
createSetterCall(
fieldDescriptor, binExpr, expr, descriptor.getTargetClass(), setter);
} else {
text = "a = b";
PsiAssignmentExpression assignment1 =
(PsiAssignmentExpression) factory.createExpressionFromText(text, null);
assignment1.getLExpression().replace(expr);
assignment1.getRExpression().replace(binExpr);
setExpr = assignment1;
}
assignment.replace(setExpr);
// TODO: check if value is used!!!
}
}
} else if (RefactoringUtil.isPlusPlusOrMinusMinus(parent)) {
IElementType sign;
if (parent instanceof PsiPrefixExpression) {
sign = ((PsiPrefixExpression) parent).getOperationTokenType();
} else {
sign = ((PsiPostfixExpression) parent).getOperationTokenType();
}
PsiExpression getExpr = expr;
if (processGet) {
final PsiMethodCallExpression getterCall =
createGetterCall(fieldDescriptor, expr, descriptor.getTargetClass(), getter);
if (getterCall != null) {
getExpr = getterCall;
}
}
@NonNls String text;
if (sign == JavaTokenType.PLUSPLUS) {
text = "a+1";
} else {
text = "a-1";
}
PsiBinaryExpression binExpr =
(PsiBinaryExpression) factory.createExpressionFromText(text, null);
binExpr.getLOperand().replace(getExpr);
PsiExpression setExpr;
if (processSet) {
setExpr =
createSetterCall(fieldDescriptor, binExpr, expr, descriptor.getTargetClass(), setter);
} else {
text = "a = b";
PsiAssignmentExpression assignment =
(PsiAssignmentExpression) factory.createExpressionFromText(text, null);
assignment.getLExpression().replace(expr);
assignment.getRExpression().replace(binExpr);
setExpr = assignment;
}
parent.replace(setExpr);
} else {
if (!processGet) return true;
PsiMethodCallExpression methodCall =
createGetterCall(fieldDescriptor, expr, descriptor.getTargetClass(), getter);
if (methodCall != null) {
expr.replace(methodCall);
}
}
} catch (IncorrectOperationException e) {
LOG.error(e);
}
return true;
}
@Override
public void doFix(Project project, ProblemDescriptor descriptor)
throws IncorrectOperationException {
final PsiExpression expression = (PsiExpression) descriptor.getPsiElement();
final PsiType type = expression.getType();
if (type == null) {
return;
}
final PsiPrimitiveType unboxedType = PsiPrimitiveType.getUnboxedType(type);
if (unboxedType == null) {
return;
}
final String newExpressionText = buildNewExpressionText(expression, unboxedType);
final JavaPsiFacade psiFacade = JavaPsiFacade.getInstance(project);
final PsiElementFactory factory = psiFacade.getElementFactory();
final PsiElement parent = expression.getParent();
final String expressionText = expression.getText();
if (parent instanceof PsiPrefixExpression && !unboxedType.equalsToText("boolean")) {
final PsiPrefixExpression prefixExpression = (PsiPrefixExpression) parent;
final IElementType tokenType = prefixExpression.getOperationTokenType();
if (JavaTokenType.PLUSPLUS.equals(tokenType)) {
replaceExpression(prefixExpression, expressionText + '=' + newExpressionText + "+1");
} else if (JavaTokenType.MINUSMINUS.equals(tokenType)) {
replaceExpression(prefixExpression, expressionText + '=' + newExpressionText + "-1");
} else {
replaceExpression(
prefixExpression, prefixExpression.getOperationSign().getText() + newExpressionText);
}
} else if (parent instanceof PsiPostfixExpression) {
final PsiPostfixExpression postfixExpression = (PsiPostfixExpression) parent;
final IElementType tokenType = postfixExpression.getOperationTokenType();
final PsiElement grandParent = postfixExpression.getParent();
if (grandParent instanceof PsiExpressionStatement) {
if (JavaTokenType.PLUSPLUS.equals(tokenType)) {
replaceExpression(postfixExpression, expressionText + '=' + newExpressionText + "+1");
} else if (JavaTokenType.MINUSMINUS.equals(tokenType)) {
replaceExpression(postfixExpression, expressionText + '=' + newExpressionText + "-1");
}
} else {
final PsiElement element = postfixExpression.replace(postfixExpression.getOperand());
final PsiStatement statement = PsiTreeUtil.getParentOfType(element, PsiStatement.class);
if (statement == null) {
return;
}
final PsiStatement newStatement;
if (JavaTokenType.PLUSPLUS.equals(tokenType)) {
newStatement =
factory.createStatementFromText(
expressionText + '=' + newExpressionText + "+1;", statement);
} else {
newStatement =
factory.createStatementFromText(
expressionText + '=' + newExpressionText + "-1;", statement);
}
final PsiElement greatGrandParent = statement.getParent();
greatGrandParent.addAfter(newStatement, statement);
}
} else if (parent instanceof PsiAssignmentExpression) {
final PsiAssignmentExpression assignmentExpression = (PsiAssignmentExpression) parent;
final PsiExpression lExpression = assignmentExpression.getLExpression();
if (expression.equals(lExpression)) {
final PsiJavaToken operationSign = assignmentExpression.getOperationSign();
final String operationSignText = operationSign.getText();
final char sign = operationSignText.charAt(0);
final PsiExpression rExpression = assignmentExpression.getRExpression();
if (rExpression == null) {
return;
}
final String text =
lExpression.getText() + '=' + newExpressionText + sign + rExpression.getText();
final PsiExpression newExpression =
factory.createExpressionFromText(text, assignmentExpression);
assignmentExpression.replace(newExpression);
} else {
replaceExpression(expression, newExpressionText);
}
} else {
replaceExpression(expression, newExpressionText);
}
}