stringatombase.java

类似于Windows上的Excel

/*
 * MC2 -- j2me spreadsheet
 *
 * Copyright (c) 2004-2006 Michael Zemljanukha ([e-mail])
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation; either version 2 of the License, or (at your option)
 * any later version.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
 * more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */

package com.wapindustrial.calc;

abstract class StringAtomBase extends LispObject {
    
    abstract public String getValue();
    public int typeNumber() {
        return TYPE_STRING;
    }
    public void toBuffer( StringBuffer sb ) {
        sb.append( '"' );
        processChars( sb, getValue() );
        sb.append( '"' );
    }
    public void toValueBuffer( StringBuffer sb, int format ) {
        sb.append(getValue());
    }
    
    /**
     * Converts to printable string (for \n \t \" chars)
     * @param sb buffer to add to
     * @param val appended string 
     */
    protected static void processChars( StringBuffer sb, String val ) {
        for(int i=0; i<val.length(); i++) {
            char cc = val.charAt(i);
            switch(cc) {
            	case '\n':
                    sb.append('\\');
                    sb.append('n');
                    break;
                case '\t':
                    sb.append('\\');
                    sb.append('t');
                    break;
                case '"':
                    sb.append('\\');
                    sb.append('"');
                    break;
                default:    
                    sb.append(cc);
            }
        }
    }
//#ifdef JAVA_COMPILER
    public void toJavaBuffer( StringBuffer sb, int ident, FunctorList parent ) {
        addIdent( sb, ident );
        sb.append( "new StringAtom(\"" );
        processChars( sb, getValue() );
        sb.append( "\") " );
    }
//#endif    
    
    public LispObject convertToType( int type ) throws EvaluateException {
        LispObject rez = this;
        switch( type ) {
            case TYPE_SHORT:
                rez = ShortAtom.createShortAtom( Short.parseShort( getValue() ) );
                break;
            case TYPE_LONG:
                rez = new LongAtom( Long.parseLong( getValue() ) );
                break;
            case TYPE_FLOAT:
                rez = new FloatAtom( getValue() );
                break;
            case TYPE_STRING:
                break;
            default:    // to STRING
                return super.convertToType( type );
        }
        return rez;
    }
}