diff options
| -rw-r--r-- | sources/scalac/symtab/Scope.java | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/sources/scalac/symtab/Scope.java b/sources/scalac/symtab/Scope.java index 64e06b61e6..477144cd3a 100644 --- a/sources/scalac/symtab/Scope.java +++ b/sources/scalac/symtab/Scope.java @@ -77,18 +77,19 @@ public class Scope { /** The owner of the entry; */ - public Scope owner; + public final Scope owner; Entry(Symbol sym, Scope owner) { - if (sym == null) throw new ApplicationError(); this.sym = sym; this.owner = owner; this.next = owner.elems; + if (sym == null) throw new ApplicationError(); owner.elems = this; } private Entry() { this.sym = Symbol.NONE; + this.owner = null; } public Entry setSymbol(Symbol sym) { @@ -154,6 +155,16 @@ public class Scope { enter(members[i]); } + /** Returns a new scope with the same content as this one. */ + public Scope cloneScope() { + int size = 0; + Scope clone = new Scope(); + for (Entry e = elems; e != Entry.NONE; e = e.next, size++) + new Entry(e.sym, clone); + if (size >= MIN_HASH) clone.createHash(); + return clone; + } + /** the number of entries in this scope */ int size() { |