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package lombok.javac;
import java.util.Collections;
import java.util.IdentityHashMap;
import java.util.Iterator;
import java.util.Map;
import com.sun.source.tree.VariableTree;
import com.sun.tools.javac.tree.JCTree;
import com.sun.tools.javac.tree.JCTree.JCVariableDecl;
import com.sun.tools.javac.tree.TreeCopier;
import com.sun.tools.javac.util.List;
public class TreeMirrorMaker extends TreeCopier<Void> {
private final IdentityHashMap<JCTree, JCTree> originalToCopy = new IdentityHashMap<JCTree, JCTree>();
public TreeMirrorMaker(JavacNode node) {
super(node.getTreeMaker());
}
@Override public <T extends JCTree> T copy(T original) {
T copy = super.copy(original);
originalToCopy.put(original, copy);
return copy;
}
@Override public <T extends JCTree> T copy(T original, Void p) {
T copy = super.copy(original, p);
originalToCopy.put(original, copy);
return copy;
}
@Override public <T extends JCTree> List<T> copy(List<T> originals) {
List<T> copies = super.copy(originals);
if (originals != null) {
Iterator<T> it1 = originals.iterator();
Iterator<T> it2 = copies.iterator();
while (it1.hasNext()) originalToCopy.put(it1.next(), it2.next());
}
return copies;
}
@Override public <T extends JCTree> List<T> copy(List<T> originals, Void p) {
List<T> copies = super.copy(originals, p);
if (originals != null) {
Iterator<T> it1 = originals.iterator();
Iterator<T> it2 = copies.iterator();
while (it1.hasNext()) originalToCopy.put(it1.next(), it2.next());
}
return copies;
}
public Map<JCTree, JCTree> getOriginalToCopyMap() {
return Collections.unmodifiableMap(originalToCopy);
}
// Fix for NPE in HandleVal. See http://code.google.com/p/projectlombok/issues/detail?id=205
// Maybe this should be done elsewhere...
@Override public JCTree visitVariable(VariableTree node, Void p) {
JCVariableDecl copy = (JCVariableDecl) super.visitVariable(node, p);
copy.sym = ((JCVariableDecl) node).sym;
return copy;
}
}
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