tutorial/examples/bca/AutoAdaptationClass.oj


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/*
 * AUtoAdaptationClass.oj
 *
 * Source Code Adaptation example.
 * (Not real Binary Code Adaptation)
 *
 * Oct 29, 1999 by Michiaki Tatsubori
 */
package examples.bca;


import openjava.mop.*;
import openjava.ptree.*;
import openjava.syntax.*;


/**
 * The class <code>RTReflClass</code> patches the class
 * implementing <code>Writable</code> to implement <code>Printable</code>.
 */
public class AutoAdaptationClass instantiates Metaclass extends OJClass
{
    /** Overrides to translate definition */
    public convenient void translateDefinition() throws MOPException {
    /* only the case this class implements Writable */
    if (! Writable.class.isAssignableFrom( this ))  return;

    OJClass newface = Printable.class;

    addInterface( newface );

    OJMethod facemtd = newface.getMethod( "print", new OJClass[0] );

    OJMethod impmtd = new OJMethod( this,
        facemtd.getModifiers().remove( OJModifier.ABSTRACT ),
        facemtd.getReturnType(),
        facemtd.getName(), facemtd.getParameterTypes(),
        facemtd.getExceptionTypes(),
        null
    );
    addMethod( impmtd );

    StatementList body = makeStatementList(
        "this.write(java.lang.System.out);"
    );
    impmtd.setBody( body );
    }
}