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IDEA-53874: DomFileElement cached [rev. by peter]

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This commit is contained in:
Dmitry Avdeev
2010-04-13 16:19:35 +04:00
parent 07bc06c754
commit 20cd597945
1 changed files with 16 additions and 2 deletions
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xml/dom-openapi/src/com/intellij/util/xml/DomUtil.java
+16 -2
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@@ -6,6 +6,7 @@ package com.intellij.util.xml;
import com.intellij.openapi.editor.Editor;
import com.intellij.openapi.progress.ProgressManager;
import com.intellij.openapi.project.Project;
import com.intellij.openapi.util.Key;
import com.intellij.openapi.util.TextRange;
import com.intellij.psi.PsiDocumentManager;
import com.intellij.psi.PsiElement;
@@ -37,6 +38,8 @@ import java.util.*;
public class DomUtil {
public static final TypeVariable<Class<GenericValue>> GENERIC_VALUE_TYPE_VARIABLE = ReflectionCache.getTypeParameters(GenericValue.class)[0];
private static final Class<Void> DUMMY = void.class;
private static final Key<DomFileElement> FILE_ELEMENT_KEY = Key.create("dom file element");
private static final ConcurrentFactoryMap<Type, Class> ourTypeParameters = new ConcurrentFactoryMap<Type, Class>() {
@NotNull
protected Class create(final Type key) {
@@ -394,8 +397,19 @@ public class DomUtil {
}
public static <T extends DomElement> DomFileElement<T> getFileElement(@NotNull DomElement element) {
final DomElement root = getRoot(element);
return root instanceof DomFileElement ? (DomFileElement<T>)root : null;
if (element instanceof DomFileElement) {
return (DomFileElement)element;
}
DomFileElement fileElement = element.getUserData(FILE_ELEMENT_KEY);
if (fileElement == null) {
DomElement parent = element.getParent();
if (parent != null) {
fileElement = getFileElement(parent);
}
element.putUserData(FILE_ELEMENT_KEY, fileElement);
}
return fileElement;
}
@NotNull