SubstituteSymbolTable(SymbolTable original, int version, int maxId) {
assert original.isSharedTable() && !original.isSystemTable();
assert (original.getVersion() != version || original.getMaxId() != maxId);
myOriginalSymTab = original;
myName = original.getName();
myVersion = version;
myMaxId = maxId;
}
@SuppressWarnings("unchecked")
public Iterator<String> iterateDeclaredSymbolNames() {
Iterator<String> originalIterator;
if (myOriginalSymTab != null) {
originalIterator = myOriginalSymTab.iterateDeclaredSymbolNames();
} else {
originalIterator = Collections.EMPTY_LIST.iterator();
}
return new SymbolIterator(originalIterator);
}
public int findSymbol(String text) {
int sid = UNKNOWN_SYMBOL_ID;
if (myOriginalSymTab != null) {
sid = myOriginalSymTab.findSymbol(text);
if (sid > myMaxId) {
sid = UNKNOWN_SYMBOL_ID;
}
}
return sid;
}
public SymbolToken find(String text) {
SymbolToken tok = null;
if (myOriginalSymTab != null) {
tok = myOriginalSymTab.find(text);
// If symbol token is found but its sid is beyond the correct max
// id of the substitute, then return null, as it should not be
// found at all.
if (tok != null && tok.getSid() > myMaxId) {
tok = null;
}
}
return tok;
}
public String findKnownSymbol(int id) {
if (id > myMaxId || myOriginalSymTab == null) {
return null;
}
return myOriginalSymTab.findKnownSymbol(id);
}