SquirrelJME/SquirrelJME

// -*- Mode: Java; indent-tabs-mode: t; tab-width: 4 -*-
// ---------------------------------------------------------------------------
// Multi-Phasic Applications: SquirrelJME
//     Copyright (C) Stephanie Gawroriski <xer@multiphasicapps.net>
// ---------------------------------------------------------------------------
// SquirrelJME is under the Mozilla Public License Version 2.0.
// See license.mkd for licensing and copyright information.
// ---------------------------------------------------------------------------

package cc.squirreljme.debugger;

import cc.squirreljme.runtime.cldc.debug.Debugging;
import net.multiphasicapps.classfile.ClassFile;
import net.multiphasicapps.classfile.ClassName;
import net.multiphasicapps.classfile.Method;

/**
 * Viewer for Class files using SquirrelJME's {@link ClassFile}.
 *
 * @since 2024/01/22
 */
public class JavaClassViewer
    implements ClassViewer
{
    /** The class to view. */
    protected final ClassFile classFile;
    
    /** Known methods. */
    private volatile MethodViewer[] _methods;
    
    /**
     * Initializes the class viewer.
     *
     * @param __class The class to view.
     * @throws NullPointerException On null arguments.
     * @since 2024/01/22
     */
    public JavaClassViewer(ClassFile __class)
        throws NullPointerException
    {
        if (__class == null)
            throw new NullPointerException("NARG");
        
        this.classFile = __class;
    }
    
    /**
     * {@inheritDoc}
     * @since 2024/01/22
     */
    @Override
    public MethodViewer[] methods()
    {
        // Need to wrap each method?
        MethodViewer[] result = this._methods;
        if (result == null)
        {
            // Get class methods
            Method[] classMethods = this.classFile.methods();
            int count = classMethods.length;
            
            // Setup result and wrap all methods
            result = new MethodViewer[count];
            for (int i = 0; i < count; i++)
                result[i] = new JavaMethodViewer(classMethods[i]);
            
            // Cache for later
            this._methods = result;
        }
        
        // Return cached value
        return result;
    }
    
    /**
     * {@inheritDoc}
     * @since 2024/01/22
     */
    @Override
    public ClassName thisName()
    {
        return this.classFile.thisName();
    }
}