public static boolean isValidName(
final Project project, final PsiElement psiElement, final String newName) {
if (newName == null || newName.length() == 0) {
return false;
}
final Condition<String> inputValidator =
RenameInputValidatorRegistry.getInputValidator(psiElement);
if (inputValidator != null) {
return inputValidator.value(newName);
}
if (psiElement instanceof PsiFile || psiElement instanceof PsiDirectory) {
return newName.indexOf('\\') < 0 && newName.indexOf('/') < 0;
}
if (psiElement instanceof PomTargetPsiElement) {
return !StringUtil.isEmptyOrSpaces(newName);
}
final PsiFile file = psiElement.getContainingFile();
final Language elementLanguage = psiElement.getLanguage();
final Language fileLanguage = file == null ? null : file.getLanguage();
Language language =
fileLanguage == null
? elementLanguage
: fileLanguage.isKindOf(elementLanguage) ? fileLanguage : elementLanguage;
return LanguageNamesValidation.INSTANCE
.forLanguage(language)
.isIdentifier(newName.trim(), project);
}
@Override
public boolean isInContext(@NotNull final PsiFile file, final int offset) {
PsiElement at = file.findElementAt(offset);
if (at == null && offset == file.getTextLength()) {
at = file.findElementAt(offset - 1);
}
Language language = at != null ? at.getParent().getLanguage() : null;
if (language instanceof XMLLanguage) {
final PsiLanguageInjectionHost host =
PsiTreeUtil.getParentOfType(at, PsiLanguageInjectionHost.class, false);
if (host != null) {
final Ref<Boolean> hasJsInjection = new Ref<Boolean>(Boolean.FALSE);
InjectedLanguageUtil.enumerate(
host,
new JSResolveUtil.JSInjectedFilesVisitor() {
@Override
protected void process(final JSFile file) {
hasJsInjection.set(Boolean.TRUE);
}
});
if (hasJsInjection.get()) {
language = JavaScriptSupportLoader.JAVASCRIPT.getLanguage();
}
}
}
return language != null && language.isKindOf(JavaScriptSupportLoader.JAVASCRIPT.getLanguage());
}
@Nullable
public static Language findJavaOrLikeLanguage(@NotNull final PsiFile file) {
final Set<Language> languages = file.getViewProvider().getLanguages();
for (final Language language : languages) {
if (language == StdLanguages.JAVA) return language;
}
for (final Language language : languages) {
if (language.isKindOf(StdLanguages.JAVA)) return language;
}
return null;
}
/**
* This method searches ast node that could be reparsed incrementally and returns pair of target
* reparseable node and new replacement node. Returns null if there is no any chance to make
* incremental parsing.
*/
@Nullable
public Couple<ASTNode> findReparseableRoots(
@NotNull PsiFileImpl file,
@NotNull TextRange changedPsiRange,
@NotNull CharSequence newFileText) {
Project project = file.getProject();
final FileElement fileElement = file.getTreeElement();
final CharTable charTable = fileElement.getCharTable();
int lengthShift = newFileText.length() - fileElement.getTextLength();
if (fileElement.getElementType() instanceof ITemplateDataElementType || isTooDeep(file)) {
// unable to perform incremental reparse for template data in JSP, or in exceptionally deep
// trees
return null;
}
final ASTNode leafAtStart =
fileElement.findLeafElementAt(Math.max(0, changedPsiRange.getStartOffset() - 1));
final ASTNode leafAtEnd =
fileElement.findLeafElementAt(
Math.min(changedPsiRange.getEndOffset(), fileElement.getTextLength() - 1));
ASTNode node =
leafAtStart != null && leafAtEnd != null
? TreeUtil.findCommonParent(leafAtStart, leafAtEnd)
: fileElement;
Language baseLanguage = file.getViewProvider().getBaseLanguage();
while (node != null && !(node instanceof FileElement)) {
IElementType elementType = node.getElementType();
if (elementType instanceof IReparseableElementType) {
final TextRange textRange = node.getTextRange();
final IReparseableElementType reparseable = (IReparseableElementType) elementType;
if (baseLanguage.isKindOf(reparseable.getLanguage())
&& textRange.getLength() + lengthShift > 0) {
final int start = textRange.getStartOffset();
final int end = start + textRange.getLength() + lengthShift;
if (end > newFileText.length()) {
reportInconsistentLength(file, newFileText, node, start, end);
break;
}
CharSequence newTextStr = newFileText.subSequence(start, end);
if (reparseable.isParsable(node.getTreeParent(), newTextStr, baseLanguage, project)) {
ASTNode chameleon = reparseable.createNode(newTextStr);
if (chameleon != null) {
DummyHolder holder =
DummyHolderFactory.createHolder(
file.getManager(), null, node.getPsi(), charTable);
holder.getTreeElement().rawAddChildren((TreeElement) chameleon);
if (holder.getTextLength() != newTextStr.length()) {
String details =
ApplicationManager.getApplication().isInternal()
? "text=" + newTextStr + "; treeText=" + holder.getText() + ";"
: "";
LOG.error("Inconsistent reparse: " + details + " type=" + elementType);
}
return Couple.of(node, chameleon);
}
}
}
}
node = node.getTreeParent();
}
return null;
}
@Override
protected boolean isMyLanguage(Language language) {
return language.isKindOf(HbLanguage.INSTANCE);
}
@Override
public boolean isMyLanguage(@NotNull Language language) {
return language.isKindOf(getFileType().getLanguage());
}