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128 lines
3.2 KiB
C++
128 lines
3.2 KiB
C++
// $Id: SyntaxTree.h 1960 2008-12-15 12:52:38Z phkoehn $
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// vim:tabstop=2
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/***********************************************************************
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Moses - factored phrase-based language decoder
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Copyright (C) 2009 University of Edinburgh
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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***********************************************************************/
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#pragma once
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#include <string>
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#include <vector>
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#include <map>
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#include <sstream>
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namespace MosesTraining
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{
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class SyntaxNode
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{
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protected:
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int m_start, m_end;
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std::string m_label;
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std::vector< SyntaxNode* > m_children;
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SyntaxNode* m_parent;
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float m_pcfgScore;
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public:
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SyntaxNode( int startPos, int endPos, std::string label )
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:m_start(startPos)
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,m_end(endPos)
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,m_label(label)
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,m_parent(0)
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,m_pcfgScore(0.0f) {
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}
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int GetStart() const {
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return m_start;
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}
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int GetEnd() const {
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return m_end;
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}
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std::string GetLabel() const {
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return m_label;
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}
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float GetPcfgScore() const {
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return m_pcfgScore;
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}
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void SetPcfgScore(float score) {
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m_pcfgScore = score;
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}
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SyntaxNode *GetParent() {
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return m_parent;
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}
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void SetParent(SyntaxNode *parent) {
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m_parent = parent;
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}
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void AddChild(SyntaxNode* child) {
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m_children.push_back(child);
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}
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const std::vector< SyntaxNode* > &GetChildren() const {
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return m_children;
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}
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};
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typedef std::vector< int > SplitPoints;
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typedef std::vector< SplitPoints > ParentNodes;
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class SyntaxTree
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{
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protected:
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std::vector< SyntaxNode* > m_nodes;
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SyntaxNode* m_top;
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typedef std::map< int, std::vector< SyntaxNode* > > SyntaxTreeIndex2;
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typedef SyntaxTreeIndex2::const_iterator SyntaxTreeIndexIterator2;
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typedef std::map< int, SyntaxTreeIndex2 > SyntaxTreeIndex;
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typedef SyntaxTreeIndex::const_iterator SyntaxTreeIndexIterator;
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SyntaxTreeIndex m_index;
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int m_size;
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std::vector< SyntaxNode* > m_emptyNode;
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friend std::ostream& operator<<(std::ostream&, const SyntaxTree&);
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public:
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SyntaxTree() {
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m_top = 0; // m_top doesn't get set unless ConnectNodes is called.
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}
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~SyntaxTree();
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SyntaxNode *AddNode( int startPos, int endPos, std::string label );
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SyntaxNode *GetTop() {
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return m_top;
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}
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ParentNodes Parse();
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bool HasNode( int startPos, int endPos ) const;
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const std::vector< SyntaxNode* >& GetNodes( int startPos, int endPos ) const;
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const std::vector< SyntaxNode* >& GetAllNodes() {
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return m_nodes;
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};
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size_t GetNumWords() const {
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return m_size;
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}
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void ConnectNodes();
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void Clear();
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std::string ToString() const;
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};
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std::ostream& operator<<(std::ostream&, const SyntaxTree&);
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}
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