@Override
public void inlineElement(Project project, Editor editor, PsiElement psiElement) {
BnfRule rule = (BnfRule) psiElement;
BnfAttrs attrs = rule.getAttrs();
if (PsiTreeUtil.hasErrorElements(rule)) {
CommonRefactoringUtil.showErrorHint(project, editor, "Rule has errors", "Inline Rule", null);
return;
}
if (attrs != null && !attrs.getAttrList().isEmpty()) {
CommonRefactoringUtil.showErrorHint(
project, editor, "Rule has attributes", "Inline Rule", null);
return;
}
Collection<PsiReference> allReferences = ReferencesSearch.search(psiElement).findAll();
if (allReferences.isEmpty()) {
CommonRefactoringUtil.showErrorHint(
project, editor, "Rule is never used", "Inline Rule", null);
return;
}
boolean hasNonAttributeRefs = false;
for (PsiReference ref : allReferences) {
if (!GrammarUtil.isInAttributesReference(ref.getElement())) {
hasNonAttributeRefs = true;
break;
}
}
if (!hasNonAttributeRefs) {
CommonRefactoringUtil.showErrorHint(
project, editor, "Rule is referenced only in attributes", "Inline Rule", null);
return;
}
if (!CommonRefactoringUtil.checkReadOnlyStatus(project, rule)) return;
PsiReference reference =
editor != null
? TargetElementUtilBase.findReference(editor, editor.getCaretModel().getOffset())
: null;
if (reference != null && !rule.equals(reference.resolve())) {
reference = null;
}
InlineRuleDialog dialog = new InlineRuleDialog(project, rule, reference);
dialog.show();
}
@NotNull
@Override
public FoldingDescriptor[] buildFoldRegions(
@NotNull PsiElement root, @NotNull Document document, boolean quick) {
if (!(root instanceof BnfFile)) return FoldingDescriptor.EMPTY;
BnfFile file = (BnfFile) root;
final ArrayList<FoldingDescriptor> result = new ArrayList<FoldingDescriptor>();
for (BnfAttrs attrs : file.getAttributes()) {
TextRange textRange = attrs.getTextRange();
if (textRange.getLength() <= 2) continue;
result.add(new FoldingDescriptor(attrs, textRange));
}
for (BnfRule rule : file.getRules()) {
// result.add(new FoldingDescriptor(rule, rule.getTextRange()));
BnfAttrs attrs = rule.getAttrs();
if (attrs != null) {
result.add(new FoldingDescriptor(attrs, attrs.getTextRange()));
}
}
if (!quick) {
PsiTreeUtil.processElements(
file,
new PsiElementProcessor() {
@Override
public boolean execute(@NotNull PsiElement element) {
if (element.getNode().getElementType() == BnfParserDefinition.BNF_BLOCK_COMMENT) {
result.add(new FoldingDescriptor(element, element.getTextRange()));
}
return true;
}
});
}
return result.toArray(new FoldingDescriptor[result.size()]);
}