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.c.std;

import cc.squirreljme.c.COpaqueType;
import cc.squirreljme.c.CType;
import java.lang.ref.Reference;
import java.lang.ref.WeakReference;

/**
 * Standard {@code stdint.h} types.
 *
 * @since 2023/06/24
 */
public enum CStdIntType
    implements CTypeProvider
{
    /** Signed 8-bit integer. */
    INT8("int8_t"),
    
    /** Unsigned 8-bit integer. */
    UINT8("uint8_t"),
    
    /** Signed 16-bit integer. */
    INT16("int16_t"),
    
    /** Unsigned 16-bit integer. */
    UINT16("uint16_t"),
    
    /** Signed 32-bit integer. */
    INT32("int32_t"),
    
    /** Unsigned 32-bit integer. */
    UINT32("uint32_t"),
    
    /** Signed 64-bit integer. */
    INT64("int64_t"),
    
    /** Unsigned 64-bit integer. */
    UINT64("uint64_t"),
    
    /* End. */
    ;
    
    /** The token used for the type. */
    protected final String token;
    
    /** The type cache. */
    private volatile Reference<CType> _type;
    
    /**
     * Initializes the base type.
     * 
     * @param __token The token used.
     * @throws NullPointerException On null arguments.
     * @since 2023/06/24
     */
    CStdIntType(String __token)
        throws NullPointerException
    {
        if (__token == null)
            throw new NullPointerException("NARG");
        
        this.token = __token;
    }
    
    /**
     * {@inheritDoc}
     * @since 2023/06/24
     */
    @Override
    public CType type()
    {
        Reference<CType> ref = this._type;
        CType rv;
        
        if (ref == null || (rv = ref.get()) == null)
        {
            // This is opaque because from the general code perspective, we
            // really do not know what the true type of this is...
            rv = COpaqueType.of(this.token, false);
            this._type = new WeakReference<>(rv);
        }
        
        return rv;
    }
}