From 2e3f16905bbd2ccbe0a940cc30374f7f5e37f096 Mon Sep 17 00:00:00 2001
From: Timerix22 <timerix11@gmail.com>
Date: Fri, 10 Jun 2022 18:47:36 +0300
Subject: [PATCH] working on Hashtable2

---
 src/Hashtable2/Hashtable2.hpp | 134 ++++++++++++++++++++++++++--------
 src/base/errors.c             |   1 +
 src/base/errors.h             |   4 +-
 3 files changed, 108 insertions(+), 31 deletions(-)

diff --git a/src/Hashtable2/Hashtable2.hpp b/src/Hashtable2/Hashtable2.hpp
index cf84e91..e734f0a 100644
--- a/src/Hashtable2/Hashtable2.hpp
+++ b/src/Hashtable2/Hashtable2.hpp
@@ -3,58 +3,132 @@
 #include "../Hashtable/hash.h"
 #include "../Autoarr2/Autoarr2.hpp"
 
+// amount of rows
+typedef uint32 HT_HEIGHT_T;
+typedef uint32 HT_HASH_T;
+#define HT_HASH(K) hashb_sdbm32(K, sizeof(K))
+
+static const HT_HEIGHT_T HT_HEIGHTS[]={17,61,257,1021,4099,16381,65521};
+#define _HT_HEIN_MIN 0
+#define _HT_HEIN_MAX 6
+
+#define _HT_ARR_BC 2
+#define _HT_ARR_BL 8
+
+
 template <typename TKey, typename TVal>
 class Hashtable2{
-    uint8 hein;
-public:
+    Autoarr2<HT_HASH_T>* hashes;
     Autoarr2<TKey>* keys;
     Autoarr2<TVal>* values;
+    uint8 hein;
 
+    void expand();
+
+public:
     Hashtable2();
+    virtual ~Hashtable2();
+
+    HT_HEIGHT_T height(){ return HT_HEIGHTS[hein]; }
+    TVal* getptr(TKey key);
     TVal get(TKey key);
-    TVal getptr(TKey key);
     bool addOrSet(TKey key, TVal);
     bool remove(TKey);
-    virtual ~Hashtable2();
 };
 
 
-// amount of rows
-static const uint16 HT_HEIGHTS[]={17,61,257,1021,4099,16381,65521};
-#define HT_HEIN_MIN 0
-#define HT_HEIN_MAX 6
-
-#define ARR_BC 2
-#define ARR_BL 8
-
 template<typename TKey, typename TVal>
-Hashtable2<TKey, TVal>::Hashtable2() {
-    hein=HT_HEIN_MIN;
-    keys=new Autoarr2<TKey>;
-    values=new Autoarr2<TVal>;
+Hashtable2<TKey, TVal>::Hashtable2(){
+    hein=_HT_HEIN_MIN;
+    HT_HEIGHT_T h=height();
+    hashes=new Autoarr2<HT_HASH_T>[h];
+    keys=new Autoarr2<TKey>[h];
+    values=new Autoarr2<TVal>[h];
+    for(HT_HEIGHT_T i=0; i<h; i++){
+        hashes[i]=Autoarr2<HT_HASH_T>(_HT_ARR_BL);
+        keys[i]=Autoarr2<TKey>(_HT_ARR_BL);
+        values[i]=Autoarr2<TVal>(_HT_ARR_BL);
+    }
 }
 
 template<typename TKey, typename TVal>
-TVal Hashtable2<TKey, TVal>::get(TKey key) {
+void Hashtable2<TKey, TVal>::expand(){
+    if(hein>=_HT_HEIN_MAX) 
+        throw_id(ERR_MAXLENGTH);
+    if(hashes->length!=keys->length || hashes->length!=values->length)
+        throw_id(ERR_DESYNC);
+
+    uint32 oldHeight=height();
+    hein++;
+    uint32 newHeight=height();
+    Autoarr2<HT_HASH_T>* newHashes=new Autoarr2<HT_HASH_T>[newHeight];
+    Autoarr2<TKey>* newKeys=new Autoarr2<TKey>[newHeight];
+    Autoarr2<TVal>* newValues=new Autoarr2<TVal>[newHeight];
+    for(HT_HEIGHT_T i=0; i<newHeight; i++){
+        newHashes[i]=Autoarr2<HT_HASH_T>(_HT_ARR_BL);
+        newKeys[i]=Autoarr2<TKey>(_HT_ARR_BL);
+        newValues[i]=Autoarr2<TVal>(_HT_ARR_BL);
+    }
+
+    for(HT_HEIGHT_T rowN=0; rowN<newHeight; rowN++){
+        Autoarr2<HT_HASH_T>* oldHashesRow= hashes+rowN;
+        Autoarr2<TKey>*      oldKeysRow  = keys  +rowN;
+        Autoarr2<TVal>*      oldValuesRow= values+rowN;
+
+        for(uint32 k=0; k < oldHashesRow->length; k++){
+            HT_HASH_T currentHash=oldHashesRow->get(k);
+            HT_HEIGHT_T newRowN=currentHash%oldHeight;
+
+            Autoarr2<HT_HASH_T>* newHashesRow= newHashes+newRowN;
+            Autoarr2<TKey>*      newKeysRow  = newKeys  +newRowN;
+            Autoarr2<TVal>*      newValuesRow= newValues+newRowN;
+
+            newHashesRow->add(currentHash);
+            newKeysRow->add(oldKeysRow->get(k));
+            newValuesRow->add(oldValuesRow->get(k));
+        }
+        //delete oldHashesRow;
+        //delete oldKeysRow;
+        //delete oldValuesRow;
+    }
+
+    delete[] hashes;
+    delete[] keys;
+    delete[] values;
+    hashes=newHashes;
+    keys=newKeys;
+    values=newValues;
+}
+
+template<typename TKey, typename TVal>
+TVal* Hashtable2<TKey, TVal>::getptr(TKey key){
+    HT_HASH_T keyHash=HT_HASH(key);
+    HT_HEIGHT_T rowHeight=keyHash%height();
+    Autoarr2<HT_HASH_T>* hashesRow=hashes+rowHeight;
+    uint32 index=hashesRow->search(keyHash);
+    if(index==Autoarr2_NO_REZULT) 
+        return NULL;
+    Autoarr2<TVal>* valuesRow=values+rowHeight;
+    return valuesRow->getptr(index);
+}
+
+template<typename TKey, typename TVal>
+TVal Hashtable2<TKey, TVal>::get(TKey key){
     
 }
 
 template<typename TKey, typename TVal>
-TVal Hashtable2<TKey, TVal>::getptr(TKey key) {
+bool Hashtable2<TKey, TVal>::addOrSet(TKey key, TVal){
+    //expand
+}
+
+template<typename TKey, typename TVal>
+bool Hashtable2<TKey, TVal>::remove(TKey){
 
 }
 
 template<typename TKey, typename TVal>
-bool Hashtable2<TKey, TVal>::addOrSet(TKey key, TVal) {
-
-}
-
-template<typename TKey, typename TVal>
-bool Hashtable2<TKey, TVal>::remove(TKey) {
-
-}
-
-template<typename TKey, typename TVal>
-Hashtable2<TKey, TVal>::~Hashtable2() {
-
+Hashtable2<TKey, TVal>::~Hashtable2(){
+    delete[] keys;
+    delete[] values;
 }
diff --git a/src/base/errors.c b/src/base/errors.c
index a2a2864..1df7552 100644
--- a/src/base/errors.c
+++ b/src/base/errors.c
@@ -11,6 +11,7 @@ char* errname(ErrorId err){
         case ERR_NOTIMPLEMENTED: return "ERR_NOTIMPLEMENTED";
         case ERR_NULLPTR: return "ERR_NULLPTR";
         case ERR_ENDOFSTR: return "ERR_ENDOFSTR";
+        case ERR_DESYNC: return "ERR_DESYNC";
         default: return "UNKNOWN_ERROR";
     }
 }
diff --git a/src/base/errors.h b/src/base/errors.h
index 0b43378..c4c59b5 100644
--- a/src/base/errors.h
+++ b/src/base/errors.h
@@ -9,7 +9,9 @@ extern "C" {
 
 typedef enum ErrorId {
     SUCCESS, // not an error 
-    ERR_MAXLENGTH, ERR_WRONGTYPE, ERR_WRONGINDEX, ERR_NOTIMPLEMENTED, ERR_NULLPTR, ERR_ENDOFSTR
+    ERR_MAXLENGTH, ERR_WRONGTYPE, ERR_WRONGINDEX, 
+    ERR_NOTIMPLEMENTED, ERR_NULLPTR, ERR_ENDOFSTR, 
+    ERR_DESYNC
 } ErrorId;
 
 char* errname(ErrorId err);