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__ */