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package org.intellij.sdk.language;
import com.intellij.codeInsight.lookup.LookupElement;
import com.intellij.codeInsight.lookup.LookupElementBuilder;
import com.intellij.openapi.util.TextRange;
import com.intellij.psi.PsiElement;
import com.intellij.psi.PsiElementResolveResult;
import com.intellij.psi.PsiPolyVariantReference;
import com.intellij.psi.PsiReferenceBase;
import com.intellij.psi.ResolveResult;
import com.intellij.util.IncorrectOperationException;
import org.intellij.sdk.language.psi.SdDeclaration;
import org.intellij.sdk.language.psi.SdIdentifierVal;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import java.util.ArrayList;
import java.util.List;
public class SdReference extends PsiReferenceBase<PsiElement> implements PsiPolyVariantReference {
private final String elementName;
public SdReference(@NotNull PsiElement element, TextRange textRange) {
super(element, textRange);
elementName = element.getText().substring(textRange.getStartOffset(), textRange.getEndOffset());
}
@NotNull
@Override
public ResolveResult @NotNull [] multiResolve(boolean incompleteCode) {
PsiElement file = myElement.getContainingFile();
final List<SdDeclaration> declarations = SdUtil.findDeclarationsByScope(file, myElement, elementName);
List<ResolveResult> results = new ArrayList<>();
for (SdDeclaration declaration : declarations) {
results.add(new PsiElementResolveResult(declaration));
}
return results.toArray(new ResolveResult[results.size()]);
}
@Nullable
@Override
public PsiElement resolve() {
ResolveResult[] resolveResults = multiResolve(false);
return resolveResults.length == 1 ? resolveResults[0].getElement() : null;
}
@Override
public Object @NotNull [] getVariants() {
List<SdDeclaration> declarations = SdUtil.findDeclarations(myElement.getContainingFile());
List<LookupElement> variants = new ArrayList<>();
for (final SdDeclaration element : declarations) {
if (element.getName() != null && element.getName().length() > 0) {
variants.add(LookupElementBuilder
.create(element).withIcon(SdIcons.FILE)
.withTypeText(element.getContainingFile().getName())
);
}
}
return variants.toArray();
}
@Override
public PsiElement handleElementRename(@NotNull String newElementName) throws IncorrectOperationException {
return ((SdIdentifierVal) myElement).setName(newElementName);
}
}
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