--- parser3/src/include/pa_hash.h	2001/01/27 12:04:53	1.2
+++ parser3/src/include/pa_hash.h	2001/01/29 10:22:01	1.5
@@ -1,5 +1,5 @@
 /*
-  $Id: pa_hash.h,v 1.2 2001/01/27 12:04:53 paf Exp $
+  $Id: pa_hash.h,v 1.5 2001/01/29 10:22:01 paf Exp $
 */
 
 /*
@@ -17,16 +17,16 @@
 
 class Pool;
 
-typedef String Key;
-typedef void Value;
-
 class Hash {
 public:
 
+	typedef String Key;
+	typedef void Value;
+
 private:
 	friend Pool;
 
-	// expand when there would be used this %% of size
+	// expand when used these %% of size
 	enum {
 		THRESHOLD_PERCENT=75
 	};
@@ -34,10 +34,10 @@ private:
 	// the pool I'm allocated on
 	Pool *pool;
 
-	// the index of size in sizes
+	// the index of [size] in [sizes]
 	int size_index;
 
-	// possible sizes. prime numbers
+	// possible [sizes]. prime numbers
 	static uint sizes[];
 	static int sizes_count;
 
@@ -73,16 +73,27 @@ private:
 
 	Hash(Pool *apool);
 
-	bool full() {
-		return used==threshold;
-	}
+	// filled to threshold: needs expanding
+	bool full() { return used==threshold; }
+
+	// allocate larger buffer & rehash
 	void expand();
 
 public:
 
+	// useful generic hash function
 	static uint generic_code(uint aresult, char *start, uint size);
+
+	// put a [value] under the [key]
 	void put(Key& key, Value *value);
+
+	// get associated [value] by the [key]
 	Value* get(Key& key);
+
+private: //disabled
+
+	Hash& operator = (Hash& src) { return *this; }
+	Hash(Hash& src) {}
 };
 
 #endif