第061回_パラメータ実体テーブル作成処理の実装

public abstract class ParameterEntityData
{
    private String m_name;
    
    public ParameterEntityData()
    {
        m_name=null;
    }
    
    public void setName(String name)
    {
        m_name = name;
    }
    
    public String getName()
    {
        return m_name;
    }
}

public class InternalParameterEntityData extends ParameterEntityData
{
    private String m_replacementText;
    
    public InternalParameterEntityData()
    {
        super();
        
        m_replacementText = null;
    }
    
    public void setText(String text)
    {
        m_replacementText =text;
    }
    
    public String toString()
    {
        return m_replacementText;
    }
}

public class ExternalParameterEntityData extends ParameterEntityData
{
    private ExternalID m_externalId;
    
    public ExternalParameterEntityData()
    {
        m_externalId = null;
    }
    
    public void setExternalId(ExternalID externalId)
    {
        m_externalId = externalId;
    }

    public ExternalID getExternalId()
    {
        return m_externalId;
    }

    public String toString()
    {
        return m_externalId.toString();
    }
}

public class PeTable
{
    private final static PeTable m_instance = new PeTable();
    private Map<String,ParameterEntityData> m_map;
    
    private PeTable()
    {
        m_map = new HashMap<String,ParameterEntityData>();
    }
    
    public static PeTable getInstance()
    {
        return m_instance;
    }
    
    public void setData(ParameterEntityData data)
    {
        String name = data.getName();
        m_map.put(name, data);
    }
    
    public String getData(String name)
    {
        ParameterEntityData data = m_map.get(name);
        
        String ret = null;
        
        if (data == null)
        {
            //何もしない
        }
        else
        {
            ret = data.toString();
        }

        return ret;
    }
}

public class MakingParameterEntitySymbolTableVisitor
extends MakingEntitySymbolTableVisitor
{
    private static PeTable m_table = PeTable.getInstance();
    private ParameterEntityData m_data;
    private String              m_name;

    
    public MakingParameterEntitySymbolTableVisitor()
    {
        m_data = null;
        m_name = "";
    }
    
    @Override
    public void visit(EbnfPEDeclNode n)
    {
        super.visit(n);
        
        if(m_result)
        {
            //テーブルに追加する
            m_table.setData(m_data);
        }
        else
        {
            //何もしない
        }
    }
    
    
    public void visit(EbnfPeNameNode n)
    {
        Token token = m_tokenManager.nextToken();
        m_result = token.match(n);
        
        if(m_result)
        {
            //処理に成功したので巡回用データに登録する
            m_name = token.getString();
        }
        else
        {
            //何もしない
        }
    }
    
    @Override
    public void visit(EbnfPeEntityValueNode n)
    {
        EntityValueVisitor v = new EntityValueVisitor();
        
        v.visit(n);
        
        m_result = v.getResult();
        
        if (m_result)
        {
            InternalParameterEntityData data
               = new InternalParameterEntityData();
            
            data.setName(m_name);
            String value = v.getValue();
            data.setText(value);
            
            m_data = data;
        }
        else
        {
            //何もしない
        }
    }
    
    @Override
    public void visit(EbnfPeExternalIDNode n)
    {
        ExternalIDVisitor v
          = new ExternalIDVisitor();
        n.accept(v);
        
        m_result = v.getResult();
        
        if (m_result)
        {
            ExternalParameterEntityData data
               = new ExternalParameterEntityData();
            
            data.setName(m_name);
            ExternalID externalId = v.getExternalId();
            data.setExternalId(externalId);
            
            m_data = data;
        }
        else
        {
            //何もしない
        }
    }
}