package lombok.javac;
import java.util.Collections;
import java.util.IdentityHashMap;
import java.util.Iterator;
import java.util.Map;
import static lombok.javac.Javac.*;
import lombok.javac.JavacTreeMaker.TypeTag;
import com.sun.source.tree.LabeledStatementTree;
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.Context;
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(JavacTreeMaker maker, Context context) {
super(maker.getUnderlyingTreeMaker());
}
@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);
}
@Override public JCTree visitVariable(VariableTree node, Void p) {
JCVariableDecl original = node instanceof JCVariableDecl ? (JCVariableDecl) node : null;
JCVariableDecl copy = (JCVariableDecl) super.visitVariable(node, p);
if (original == null) return copy;
copy.sym = original.sym;
if (copy.sym != null) copy.type = original.type;
if (copy.type != null) {
boolean wipeSymAndType = copy.type.isErroneous();
if (!wipeSymAndType) {
TypeTag typeTag = TypeTag.typeTag(copy.type);
wipeSymAndType = (CTC_NONE.equals(typeTag) || CTC_ERROR.equals(typeTag) || CTC_UNKNOWN.equals(typeTag) || CTC_UNDETVAR.equals(typeTag));
}
if (wipeSymAndType) {
copy.sym = null;
copy.type = null;
}
}
return copy;
}
@Override public JCTree visitLabeledStatement(LabeledStatementTree node, Void p) {
return node.getStatement().accept(this, p);
}
}