1 files changed, 0 insertions, 158 deletions
diff --git a/utils/intern_pool.h b/utils/intern_pool.h
deleted file mode 100644
index 7c739add..00000000
--- a/utils/intern_pool.h
+++ /dev/null
@@ -1,158 +0,0 @@
-#ifndef INTERN_POOL_H
-#define INTERN_POOL_H
-
-#define DEBUG_INTERN_POOL(x) x
-
-/* to "intern" a string in lisp is to make a symbol from it (a pointer to a canonical copy whose pointer can be equality-compared/hashed directly with other interned things).  we take an Item that has a key part and some mutable parts (that aren't in its identity), and we hash-by-value the key part to map to a canonical on-heap Item - and we use a boost object pool to allocate them */
-
-//FIXME: actually store function object state (assumed stateless so far)
-
-#include <boost/pool/object_pool.hpp>
-#include "hash.h"
-//#include "null_traits.h"
-#include <functional>
-
-template <class I>
-struct get_key { // default accessor for I = like pair<key,val>
-  typedef typename I::first_type const& result_type;
-  typedef I const& argument_type;
-  result_type operator()(I const& i) const {
-    return i.first;
-  }
-};
-
-// Arg type should be the non-pointer version.  this saves me from using boost type traits to remove_pointer.  f may be binary or unary
-template <class KeyF,class F,class Arg=typename KeyF::argument_type>
-struct compose_indirect {
-  typedef Arg *argument_type; // we also accept Arg &
-  KeyF kf;
-  F f;
-  typedef typename F::result_type result_type;
-  result_type operator()(Arg const& p) const {
-    return f(kf(p));
-  }
-  result_type operator()(Arg & p) const {
-    return f(kf(p));
-  }
-  result_type operator()(Arg * p) const {
-    return f(kf(*p));
-  }
-  template <class V>
-  result_type operator()(V const& v) const {
-    return f(kf(*v));
-  }
-
-  result_type operator()(Arg const& a1,Arg const& a2) const {
-    return f(kf(a1),kf(a2));
-  }
-  result_type operator()(Arg & a1,Arg & a2) const {
-    return f(kf(a1),kf(a2));
-  }
-  result_type operator()(Arg * a1,Arg * a2) const {
-    return f(kf(*a1),kf(*a2));
-  }
-  template <class V,class W>
-  result_type operator()(V const& v,W const&w) const {
-    return f(kf(*v),kf(*w));
-  }
-
-
-};
-
-template <class KeyF,class F,class Arg=typename KeyF::argument_type>
-struct equal_indirect {
-  typedef Arg *argument_type; // we also accept Arg &
-  KeyF kf;
-  F f;
-  typedef bool result_type;
-
-  result_type operator()(Arg const& a1,Arg const& a2) const {
-    return f(kf(a1),kf(a2));
-  }
-  result_type operator()(Arg & a1,Arg & a2) const {
-    return f(kf(a1),kf(a2));
-  }
-  result_type operator()(Arg * a1,Arg * a2) const {
-    return a1==a2||(a1&&a2&&f(kf(*a1),kf(*a2)));
-  }
-  template <class V,class W>
-  result_type operator()(V const& v,W const&w) const {
-    return v==w||(v&&w&&f(kf(*v),kf(*w)));
-  }
-
-
-};
-
-/*
-
-template <class F>
-struct indirect_function {
-  F f;
-  explicit indirect_function(F const& f=F()) : f(f) {}
-  typedef typename F::result_type result_type;
-  template <class V>
-  result_type operator()(V *p) const {
-    return f(*p);
-  }
-};
-*/
-
-template <class Item,class KeyF=get_key<Item>,class HashKey=boost::hash<typename KeyF::result_type>,class EqKey=std::equal_to<typename KeyF::result_type>, class Pool=boost::object_pool<Item> >
-struct intern_pool : Pool {
-  KeyF key;
-  typedef typename KeyF::result_type Key;
-  typedef Item *Handle;
-  typedef compose_indirect<KeyF,HashKey,Item> HashDeep;
-  typedef equal_indirect<KeyF,EqKey,Item> EqDeep;
-  typedef HASH_SET<Handle,HashDeep,EqDeep> Canonical;
-  typedef typename Canonical::iterator CFind;
-  typedef std::pair<CFind,bool> CInsert;
-  Canonical canonical;
-  bool interneq(Handle &i) { // returns true if i is newly interned, false if it already existed
-    CInsert i_new=canonical.insert(i);
-    i=*i_new.first;
-    return i_new.second;
-  }
-// inherited: Handle construct(...)
-  Handle construct_fresh() { return Pool::construct(); }
-  Handle intern(Handle i) { // (maybe invalidating i, returning a valid canonical handle (pointer)
-    CInsert i_new=canonical.insert(i);
-    if (i_new.second)
-      return i;
-    else {
-      free(i);
-      return *i_new->first;
-    }
-  }
-  void destroy_interned(Handle i) {
-    DEBUG_INTERN_POOL(assert(canonical.find(i)!=canonical.end()));
-    canonical.erase(i);
-    destroy(i);
-  }
-  bool destroy_fresh(Handle i) {
-    DEBUG_INTERN_POOL(assert(canonical.find(i)!=canonical.end()||*canonical.find(i)!=i)); // i is a constructed item not yet interned.
-    destroy(i);
-  }
-  void destroy_both(Handle i) { // i must have come from this pool.  may be interned, or not.  destroy both the noninterned and interned.
-    if (!destroy_if_interned(i)) destroy(i);
-  }
-  // destroy intern(i) if it exists.  return true if it existed AND its address was i.  otherwise return false (whether or not a value-equal item existed and was destroyed)
-  bool destroy_if_interned(Handle i) {
-    CFind f=canonical.find(i);
-    if (f!=canonical.end()) {
-      Handle interned=*f;
-      canonical.erase(f);
-      destroy(f);
-      if (f==i) return true;
-    }
-    return false;
-  }
-
-  intern_pool() {
-    HASH_MAP_EMPTY(canonical,(Handle)0);
-  }
-};
-
-
-
-#endif