merge dasher which has been introduced in BRANCH first (wtf?) into HEAD

1 files changed, 122 insertions, 0 deletions

diff --git a/inputmethods/dasher/PPMLanguageModel.h b/inputmethods/dasher/PPMLanguageModel.h
new file mode 100644
index 0000000..bd860b8
--- a/dev/null
+++ b/inputmethods/dasher/PPMLanguageModel.h
@@ -0,0 +1,122 @@
+// PPMLanguageModel.h
+//
+/////////////////////////////////////////////////////////////////////////////
+//
+// Copyright (c) 1999-2002 David Ward
+//
+/////////////////////////////////////////////////////////////////////////////
+
+#ifndef __PPMLanguageModel_h__
+#define __PPMLanguageModel_h__
+
+#include "NoClones.h"
+#include "MSVC_Unannoy.h"
+#include <vector>
+#include <stdio.h>
+
+#include "LanguageModel.h"
+
+static char dumpTrieStr[40000];
+const int MAX_ORDER = 5;
+const int maxcont =200;
+
+namespace Dasher {class CPPMLanguageModel;}
+class Dasher::CPPMLanguageModel : public Dasher::CLanguageModel, private NoClones
+{
+public:
+        CPPMLanguageModel(CAlphabet *_alphabet, int _normalization);
+        ~CPPMLanguageModel();
+        
+        class CPPMnode {
+        public:
+                CPPMnode* find_symbol(int sym);
+                CPPMnode* add_symbol_to_node(int sym,int *update);
+                CPPMnode* child;
+                CPPMnode* next;
+                CPPMnode* vine;
+                short int count;
+                const short int symbol;
+                CPPMnode(int sym);
+        };
+        
+        class CPPMContext : public CContext {
+        public:
+                        CPPMContext(CPPMContext const &input) {head = input.head;order= input.order;}
+                CPPMContext(CPPMnode* _head=0, int _order=0) : head(_head),order(_order) {};
+                ~CPPMContext() {};
+                void dump();
+                CPPMnode* head;
+                int order;
+        };
+        
+        void ReleaseContext(CContext*);
+        CContext* GetRootContext();
+        inline CContext* CloneContext(CContext*);
+        void EnterSymbol(CContext* context, modelchar Symbol);
+        //inline bool GetProbs(CContext*,std::vector<symbol> &newchars,std::vector<unsigned int> &groups,std::vector<unsigned int> &probs,double addprob);
+        bool GetProbs(CContext*, std::vector<unsigned int> &Probs, double AddProb);
+        
+        void LearnSymbol(CContext* Context, modelchar Symbol);
+        void dump();
+        
+private:
+        CPPMContext *m_rootcontext;
+        CPPMnode *root;
+        void AddSymbol(CPPMContext& context,int symbol);
+        void dumpSymbol(int symbol);
+        void dumpString( char *str, int pos, int len );
+        void dumpTrie( CPPMnode *t, int d );
+
+
+
+};
+
+////////////////////////////////////////////////////////////////////////
+// Inline functions 
+////////////////////////////////////////////////////////////////////////
+
+////////////////////////////////////////////////////////////////////////
+
+inline CPPMLanguageModel::CPPMnode::CPPMnode(int sym) : symbol(sym)
+{
+        child=next=vine=0;
+        count=1;
+}
+
+///////////////////////////////////////////////////////////////////
+
+inline void CPPMLanguageModel::CPPMContext::dump() 
+        // diagnostic output
+{
+        // TODO uncomment this when headers sorted out
+        //dchar debug[128];
+        //Usprintf(debug,TEXT("head %x order %d\n"),head,order);
+        //DebugOutput(debug);
+}
+
+///////////////////////////////////////////////////////////////////
+
+inline CContext* CPPMLanguageModel::GetRootContext()
+{
+        CPPMContext * nc = new CPPMLanguageModel::CPPMContext(*m_rootcontext);
+        CContext *cont=static_cast<CContext *> (nc);
+        return  cont;
+}
+
+///////////////////////////////////////////////////////////////////
+
+inline CContext* CPPMLanguageModel::CloneContext(CContext *copythis)
+{
+        CPPMContext *ppmcontext=static_cast<CPPMContext *> (copythis);
+        CPPMContext * nc = new CPPMLanguageModel::CPPMContext(*ppmcontext);
+        return  static_cast<CContext *> (nc);
+}
+
+///////////////////////////////////////////////////////////////////
+
+inline void CPPMLanguageModel::ReleaseContext(CContext *release)
+{
+        delete release;
+}
+
+#endif /* #ifndef __PPMLanguageModel_H__ */