Repair/RepairInterpreter/Hashtable.cc

   1 #include <stdlib.h>
   2 #include "Hashtable.h"
   3 #include "element.h"
   4
   5 Hashtable::Hashtable() {
   6   forward=genallocatehashtable((unsigned int (*)(void *)) & hashelement,(int (*)(void *,void *)) & elementequals);
   7   parent=NULL;
   8 }
   9
  10 void Hashtable::setparent(Hashtable *parent) {
  11   this->parent=parent;
  12 }
  13
  14 Hashtable::Hashtable(unsigned int (*hash_function)(void *),int (*comp_function)(void *, void *)) {
  15   forward=genallocatehashtable(hash_function,comp_function);
  16   parent=NULL;
  17 }
  18
  19 void Hashtable::put(void *key, void*object) {
  20   if (contains(key))
  21     remove(key);
  22   genputtable(forward,key,object);
  23 }
  24
  25 void Hashtable::remove(void *key) {
  26   genfreekey(forward,key);
  27 }
  28
  29 void* Hashtable::get(void *key) {
  30   if (!gencontains(forward,key)) {
  31     if (parent!=NULL)
  32       return parent->get(key);
  33     else
  34       return NULL;
  35   } else
  36     return gengettable(forward,key);
  37 }
  38
  39 bool Hashtable::contains(void *key) {
  40   if (!gencontains(forward,key)) {
  41     if (parent==NULL)
  42       return false;
  43     else
  44       return parent->contains(key);
  45   }  else
  46   return true;
  47 }
  48
  49 Hashtable::~Hashtable() {
  50   genfreehashtable(forward);
  51 }