@Override
protected PsiVariable createFieldToStartTemplateOn(
final String[] names, final PsiType defaultType) {
final PsiElementFactory elementFactory = JavaPsiFacade.getElementFactory(myMethod.getProject());
return ApplicationManager.getApplication()
.runWriteAction(
new Computable<PsiParameter>() {
@Override
public PsiParameter compute() {
final PsiParameter anchor =
JavaIntroduceParameterMethodUsagesProcessor.getAnchorParameter(myMethod);
final PsiParameter psiParameter =
(PsiParameter)
myMethod
.getParameterList()
.addAfter(
elementFactory.createParameter(
chooseName(names, myMethod.getLanguage()), defaultType),
anchor);
PsiUtil.setModifierProperty(
psiParameter, PsiModifier.FINAL, myPanel.hasFinalModifier());
myParameterIndex = myMethod.getParameterList().getParameterIndex(psiParameter);
return psiParameter;
}
});
}
private static String compoundLambdaOrMethodReference(
PsiParameter parameter,
PsiExpression expression,
String samQualifiedName,
PsiType[] samParamTypes) {
String result = "";
final Project project = parameter.getProject();
final JavaPsiFacade psiFacade = JavaPsiFacade.getInstance(project);
final PsiClass functionClass =
psiFacade.findClass(samQualifiedName, GlobalSearchScope.allScope(project));
for (int i = 0; i < samParamTypes.length; i++) {
if (samParamTypes[i] instanceof PsiPrimitiveType) {
samParamTypes[i] = ((PsiPrimitiveType) samParamTypes[i]).getBoxedType(expression);
}
}
final PsiClassType functionalInterfaceType =
functionClass != null
? psiFacade.getElementFactory().createType(functionClass, samParamTypes)
: null;
final PsiParameter[] parameters = {parameter};
final String methodReferenceText =
LambdaCanBeMethodReferenceInspection.convertToMethodReference(
expression, parameters, functionalInterfaceType, null);
if (methodReferenceText != null) {
LOG.assertTrue(functionalInterfaceType != null);
result += "(" + functionalInterfaceType.getCanonicalText() + ")" + methodReferenceText;
} else {
result += parameter.getName() + " -> " + expression.getText();
}
return result;
}
private static PsiClassType createDefaultConsumerType(Project project, PsiParameter parameter) {
final JavaPsiFacade psiFacade = JavaPsiFacade.getInstance(project);
final PsiClass consumerClass =
psiFacade.findClass("java.util.function.Consumer", GlobalSearchScope.allScope(project));
return consumerClass != null
? psiFacade.getElementFactory().createType(consumerClass, parameter.getType())
: null;
}
@Override
protected PsiVariable createFieldToStartTemplateOn(final String[] names, final PsiType psiType) {
final PsiElementFactory elementFactory = JavaPsiFacade.getElementFactory(myProject);
return ApplicationManager.getApplication()
.runWriteAction(
new Computable<PsiField>() {
@Override
public PsiField compute() {
PsiField field =
elementFactory.createFieldFromText(
psiType.getCanonicalText()
+ " "
+ (getInputName() != null ? getInputName() : names[0])
+ " = "
+ myInitializerText
+ ";",
myParentClass);
PsiUtil.setModifierProperty(field, PsiModifier.FINAL, true);
PsiUtil.setModifierProperty(field, PsiModifier.STATIC, true);
final String visibility = getSelectedVisibility();
if (visibility != null) {
PsiUtil.setModifierProperty(field, visibility, true);
}
final PsiElement anchorElementIfAll = getAnchorElementIfAll();
PsiElement finalAnchorElement;
for (finalAnchorElement = anchorElementIfAll;
finalAnchorElement != null && finalAnchorElement.getParent() != myParentClass;
finalAnchorElement = finalAnchorElement.getParent()) {}
PsiMember anchorMember =
finalAnchorElement instanceof PsiMember ? (PsiMember) finalAnchorElement : null;
field =
BaseExpressionToFieldHandler.ConvertToFieldRunnable.appendField(
myExpr,
BaseExpressionToFieldHandler.InitializationPlace.IN_FIELD_DECLARATION,
myParentClass,
myParentClass,
field,
anchorMember);
myFieldRangeStart = myEditor.getDocument().createRangeMarker(field.getTextRange());
return field;
}
});
}
@Override
public void applyFix(@NotNull Project project, @NotNull ProblemDescriptor descriptor) {
final PsiForeachStatement foreachStatement =
PsiTreeUtil.getParentOfType(descriptor.getPsiElement(), PsiForeachStatement.class);
if (foreachStatement != null) {
if (!FileModificationService.getInstance().preparePsiElementForWrite(foreachStatement))
return;
final PsiElementFactory elementFactory = JavaPsiFacade.getElementFactory(project);
PsiStatement body = foreachStatement.getBody();
final PsiExpression iteratedValue = foreachStatement.getIteratedValue();
if (body != null && iteratedValue != null) {
final PsiParameter parameter = foreachStatement.getIterationParameter();
final PsiIfStatement ifStatement = extractIfStatement(body);
final PsiMethodCallExpression methodCallExpression = extractAddCall(body, ifStatement);
if (methodCallExpression == null) return;
if (isAddAllCall(foreachStatement, body)) {
restoreComments(foreachStatement, body);
final PsiExpression qualifierExpression =
methodCallExpression.getMethodExpression().getQualifierExpression();
final String qualifierText =
qualifierExpression != null ? qualifierExpression.getText() : "";
final String callText =
StringUtil.getQualifiedName(
qualifierText, "addAll(" + getIteratedValueText(iteratedValue) + ");");
PsiElement result =
foreachStatement.replace(
elementFactory.createStatementFromText(callText, foreachStatement));
reformatWhenNeeded(project, result);
return;
}
final StringBuilder builder =
new StringBuilder(getIteratedValueText(iteratedValue) + ".stream()");
builder.append(createFiltersChainText(body, parameter, ifStatement));
builder.append(
createMapperFunctionalExpressionText(
parameter, methodCallExpression.getArgumentList().getExpressions()[0]));
builder.append(".collect(java.util.stream.Collectors.");
PsiElement result = null;
try {
final PsiExpression qualifierExpression =
methodCallExpression.getMethodExpression().getQualifierExpression();
if (qualifierExpression instanceof PsiReferenceExpression) {
final PsiElement resolve = ((PsiReferenceExpression) qualifierExpression).resolve();
if (resolve instanceof PsiVariable) {
if (resolve instanceof PsiLocalVariable
&& foreachStatement.equals(
PsiTreeUtil.skipSiblingsForward(
resolve.getParent(), PsiWhiteSpace.class))) {
final PsiExpression initializer = ((PsiVariable) resolve).getInitializer();
if (initializer instanceof PsiNewExpression) {
final PsiExpressionList argumentList =
((PsiNewExpression) initializer).getArgumentList();
if (argumentList != null && argumentList.getExpressions().length == 0) {
restoreComments(foreachStatement, body);
final String callText =
builder.toString()
+ createInitializerReplacementText(
((PsiVariable) resolve).getType(), initializer)
+ ")";
result =
initializer.replace(
elementFactory.createExpressionFromText(callText, null));
simplifyRedundantCast(result);
foreachStatement.delete();
return;
}
}
}
}
}
restoreComments(foreachStatement, body);
final String qualifierText =
qualifierExpression != null ? qualifierExpression.getText() : "";
final String callText =
StringUtil.getQualifiedName(
qualifierText, "addAll(" + builder.toString() + "toList()));");
result =
foreachStatement.replace(
elementFactory.createStatementFromText(callText, foreachStatement));
simplifyRedundantCast(result);
} finally {
reformatWhenNeeded(project, result);
}
}
}
}
@Override
public void applyFix(@NotNull Project project, @NotNull ProblemDescriptor descriptor) {
final PsiForeachStatement foreachStatement =
PsiTreeUtil.getParentOfType(descriptor.getPsiElement(), PsiForeachStatement.class);
if (foreachStatement != null) {
if (!FileModificationService.getInstance().preparePsiElementForWrite(foreachStatement))
return;
PsiStatement body = foreachStatement.getBody();
final PsiExpression iteratedValue = foreachStatement.getIteratedValue();
if (body != null && iteratedValue != null) {
restoreComments(foreachStatement, body);
final PsiParameter parameter = foreachStatement.getIterationParameter();
final PsiIfStatement ifStmt = extractIfStatement(body);
StringBuilder buffer = new StringBuilder(getIteratedValueText(iteratedValue));
if (ifStmt != null) {
final PsiStatement thenBranch = ifStmt.getThenBranch();
LOG.assertTrue(thenBranch != null);
buffer.append(".stream()");
buffer.append(createFiltersChainText(body, parameter, ifStmt));
body = thenBranch;
}
buffer.append(".").append(getForEachMethodName()).append("(");
final String functionalExpressionText =
createForEachFunctionalExpressionText(project, body, parameter);
final PsiElementFactory elementFactory = JavaPsiFacade.getElementFactory(project);
PsiExpressionStatement callStatement =
(PsiExpressionStatement)
elementFactory.createStatementFromText(
buffer.toString() + functionalExpressionText + ");", foreachStatement);
callStatement = (PsiExpressionStatement) foreachStatement.replace(callStatement);
final PsiExpressionList argumentList =
((PsiCallExpression) callStatement.getExpression()).getArgumentList();
LOG.assertTrue(argumentList != null, callStatement.getText());
final PsiExpression[] expressions = argumentList.getExpressions();
LOG.assertTrue(expressions.length == 1);
if (expressions[0] instanceof PsiFunctionalExpression
&& ((PsiFunctionalExpression) expressions[0]).getFunctionalInterfaceType() == null) {
callStatement =
(PsiExpressionStatement)
callStatement.replace(
elementFactory.createStatementFromText(
buffer.toString()
+ "("
+ parameter.getText()
+ ") -> "
+ wrapInBlock(body)
+ ");",
callStatement));
}
simplifyRedundantCast(callStatement);
CodeStyleManager.getInstance(project)
.reformat(
JavaCodeStyleManager.getInstance(project).shortenClassReferences(callStatement));
}
}
}