/** Add a symbol to our scope */
void add(Definition def) {
// Check to see if we already have a definition
Definition oldDef = (Definition) elements.get(def.getName());
// If so, we'll create a MultiDef to hold them
if (oldDef != null) {
// If the symbol there so far was not a MultiDef
if (!(oldDef instanceof MultiDef)) {
// remove the old definition
elements.remove(oldDef);
// create a new MultiDef
MultiDef newMulti = new MultiDef(def.getName(), oldDef);
// add the old symbol to the MultiDef
newMulti.addDef(oldDef);
oldDef = newMulti;
// add the MultiDef back into the scope
elements.put(def.getName(), oldDef);
}
// We now have a multidef, so add the new symbol to it
((MultiDef) oldDef).addDef(def);
}
// Otherwise, just add the new symbol to the scope
else {
elements.put(def.getName(), def);
def.setParentScope(this);
}
}