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performance: cache package name

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This commit is contained in:
Alexey Kudravtsev
2012-03-15 09:39:22 +04:00
parent ae8945091e
commit 4ff3a83df5
1 changed files with 13 additions and 4 deletions
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java/java-psi-impl/src/com/intellij/psi/impl/source/PsiJavaFileBaseImpl.java
+13 -4
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@@ -58,10 +58,9 @@ import java.util.List;
public abstract class PsiJavaFileBaseImpl extends PsiFileImpl implements PsiJavaFile {
private static final Logger LOG = Logger.getInstance("#com.intellij.psi.impl.source.PsiJavaFileBaseImpl");
@NonNls private static final String[] IMPLICIT_IMPORTS = { CommonClassNames.DEFAULT_PACKAGE };
private final CachedValue<MostlySingularMultiMap<String, SymbolCollectingProcessor.ResultWithContext>> myResolveCache;
private volatile String myPackageName;
protected PsiJavaFileBaseImpl(IElementType elementType, IElementType contentElementType, FileViewProvider viewProvider) {
super(elementType, contentElementType, viewProvider);
@@ -76,6 +75,12 @@ public abstract class PsiJavaFileBaseImpl extends PsiFileImpl implements PsiJava
return clone;
}
@Override
public void subtreeChanged() {
super.subtreeChanged();
myPackageName = null;
}
@Override
@NotNull
public PsiClass[] getClasses() {
@@ -101,8 +106,12 @@ public abstract class PsiJavaFileBaseImpl extends PsiFileImpl implements PsiJava
return stub.getPackageName();
}
PsiPackageStatement statement = getPackageStatement();
return statement == null ? "" : statement.getPackageName();
String name = myPackageName;
if (name == null) {
PsiPackageStatement statement = getPackageStatement();
myPackageName = name = statement == null ? "" : statement.getPackageName();
}
return name;
}
@Override