PSName.java

// Copyright 2001-2004, FreeHEP.
package org.freehep.postscript;

/**
 * Objects for PostScript Processor, as defined in 3.3 Data Types and Objects
 *
 * @author Mark Donszelmann
 * @version $Id: PSName.java 8958 2006-09-12 23:37:43Z duns $
 */
public class PSName extends PSSimple {
    private String value;
    
    public PSName(String name) {
        this(name, false);
    }

    public PSName(String name, boolean literal) {
        super("name", literal);
        value = name;
    }
    
    public boolean execute(OperandStack os) {
        if (isLiteral()) {
            os.push(this);
            return true;
        }
     
        // ignore names starting with ESC
        if (value.charAt(0) == 0x1B) return true;
                
        PSObject obj = os.dictStack().lookup(this);
        if (obj == null) {
            error(os, new Undefined());
        }
                    
        os.execStack().pop();
        os.execStack().push(obj);
        return false;
    }
        
    public int size() {
        return value.length();
    }
    
    public String getType() {
        return "nametype";
    }

    public String getValue() {
        return value;
    }
    
    public Object clone() {
        return new PSName(value);
    }
    
    public boolean equals(Object o) {
        if (o instanceof PSName) {
            return getValue().equals(((PSName)o).getValue());
        } else if (o instanceof PSString) {
            return getValue().equals(((PSString)o).getValue());
        }
        return false;
    }
    
    public int hashCode() {
        return value.hashCode();
    }
    
    public String cvs() {
        return value;
    }
    
    public String toString() {
        return ((isLiteral()) ? "/" : "")+value;
    }
}