IteratorIndex.java

package Portugol.Language.Utilitario;

public class IteratorIndex extends IteratorString{
    
    /** Creates a new instance of IteratorIndex */
    public IteratorIndex(String msg) {
        SEPARATOR = " \t";
        this.str = msg;
        next();
    }
    private void PassarIndex(){
        end = begin;
            int rect =0;
            while( end  < str.length() ){
                // contar os []
                if( str.charAt(end) =='[')  rect++;
                if( str.charAt(end) ==']')   rect--;
                if( rect == 0 )
                    break;
                end++;
            }
            //se encontrar o ]
            if(end < str.length() && str.charAt(end) == ']')
                end++; //passar o ]
            // senao e um ERRO       
    }
    
    private void PassarString(){
        end = begin+1;
            while( end  < str.length() ){
                //quebrar o ciclo
                if( str.charAt(end) == STR && str.charAt(end-1) != '\\')
                    break;
                
                end++;
            }
            //se encontrar o \"
            if(end < str.length() && str.charAt(end) ==STR)            
            {
                end++; //passar o "
            }                
            // senao e um ERRO - String neo terminada
    }
    
    /**
     * tem de passar por cima das virgulas das fun��es com parametros
     */
    public void next(){
        begin= end+1;
        //passar por cima dos separadores
        while( begin  < str.length() &&  SEPARATOR.indexOf(str.charAt(begin))>=0 )
            begin++;
        
        //-------------------------- INDEX ----------------------------------
        if(begin  < str.length() && str.charAt(begin)== '['){
           PassarIndex();
        }
       //--------------------------------- strings -----------------------------
        else  if(begin  < str.length() && str.charAt(begin)== STR){            
            PassarString();
        } 
        //------------------------ NORMAL ---------------------------------------
        else{
            end = begin;
            while( end  < str.length() &&  SEPARATOR.indexOf(str.charAt(end))==-1 )
                end++;
        }
    }
}