1 files changed, 0 insertions, 74 deletions
diff --git a/sources/scalac/ast/TreeCopier.java b/sources/scalac/ast/TreeCopier.java
index 092f7960c2..2f12558655 100644
--- a/sources/scalac/ast/TreeCopier.java
+++ b/sources/scalac/ast/TreeCopier.java
@@ -13,77 +13,3 @@ import scalac.*;
 import scalac.util.Name;
 import scalac.symtab.*;
 import java.util.*;
-
-/**
- * Superclass for tree copiers. Takes care of duplicating symbols and
- * types when needed.
- *
- * @author Michel Schinz
- * @version 1.0
- */
-
-public class TreeCopier extends SubstTransformer {
-    public TreeCopier(Global global, TreeFactory make) {
-        super(global, make);
-    }
-
-    private boolean inPattern = false;
-
-    // Return true iff tree's symbol must be copied. By default,
-    // symbols which are defined are copied.
-    public boolean mustCopySymbol(Tree tree) {
-        switch (tree) {
-        case Ident(Name name):
-            return (inPattern && name.isVariable()) || tree.definesSymbol();
-        default:
-            return tree.definesSymbol();
-        }
-    }
-
-    public Tree copy(Tree tree) {
-        // Copy all symbols that have to be copied.
-        Traverser symCopier = new Traverser() {
-                public void traverse(Tree tree) {
-                    if (tree.hasSymbol()) {
-                        Symbol sym = tree.symbol();
-
-                        if (sym != Symbol.NONE
-                            && mustCopySymbol(tree)
-                            && !symbolMap.containsKey(sym)) {
-                            Symbol newSym = sym.cloneSymbol();
-
-                            if (symbolMap.containsKey(newSym.owner()))
-                                newSym.setOwner((Symbol)symbolMap.get(newSym.owner()));
-
-                            symbolMap.put(sym, newSym);
-                        }
-                    }
-                    switch (tree) {
-                    case CaseDef(Tree pat, Tree guard, Tree body):
-                        inPattern = true; traverse(pat); inPattern = false;
-                        traverse(guard);
-                        traverse(body);
-                        break;
-                    default:
-                        super.traverse(tree);
-                    }
-                }
-            };
-        symCopier.traverse(tree);
-
-        // Copy tree
-        Tree newTree = transform(tree);
-
-        // Update symbols
-        Iterator symbolsIt = symbolMap.entrySet().iterator();
-        while (symbolsIt.hasNext()) {
-            Map.Entry symPair = (Map.Entry)symbolsIt.next();
-            Symbol oldSym = (Symbol)symPair.getKey();
-            Symbol newSym = (Symbol)symPair.getValue();
-
-            newSym.setInfo(smApplier.apply(typeMap.apply(oldSym.info())));
-        }
-
-        return newTree;
-    }
-}