/* 
 * GetFieldOperator (c) 1998 Jochen Hoenicke
 *
 * You may distribute under the terms of the GNU General Public License.
 *
 * IN NO EVENT SHALL JOCHEN HOENICKE BE LIABLE TO ANY PARTY FOR DIRECT,
 * INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT OF
 * THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF JOCHEN HOENICKE 
 * HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * JOCHEN HOENICKE SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
 * PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS ON AN "AS IS"
 * BASIS, AND JOCHEN HOENICKE HAS NO OBLIGATION TO PROVIDE MAINTENANCE,
 * SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
 *
 * $Id$
 */

package jode;
import gnu.bytecode.CpoolRef;

public class GetFieldOperator extends Operator {
    boolean staticFlag;
    CpoolRef field;
    CodeAnalyzer codeAnalyzer;

    public GetFieldOperator(CodeAnalyzer codeAnalyzer, boolean staticFlag, 
                            CpoolRef field) {
        super(Type.tType(field.getNameAndType().getType().getString()), 0);
        this.codeAnalyzer = codeAnalyzer;
        this.staticFlag = staticFlag;
        this.field = field;
    }

    public int getPriority() {
        return 950;
    }

    public int getOperandCount() {
        return staticFlag?0:1;
    }

    public int getOperandPriority(int i) {
        if (staticFlag) {
            /* shouldn't be called */
            throw new RuntimeException("Field is static");
        }
        return 900;
    }

    public Type getOperandType(int i) {
        if (staticFlag) {
            /* shouldn't be called */
            throw new RuntimeException("Field is static");
        }
        return Type.tClass(field.getCpoolClass()
                           .getName().getString());
    }

    public void setOperandType(Type types[]) {
    }

    public String toString(String[] operands) {
        String object;
        if (staticFlag) {
            if (field.getCpoolClass().getName().getString()
                .equals(codeAnalyzer.getClazz().getName()))
                return field.getNameAndType().getName().getString();
            object = 
                codeAnalyzer.getTypeString
                (Type.tClass(field.getCpoolClass()
                             .getName().getString())); 
        } else {
            if (operands[0].equals("this"))
                return field.getNameAndType().getName().getString();
            object = operands[0];
        }
        return object + "." + field.getNameAndType().getName().getString();
    }

    public boolean equals(Object o) {
	return (o instanceof GetFieldOperator) &&
	    ((GetFieldOperator)o).field == field;
    }
}