cqfn/eo

/*
 * The MIT License (MIT)
 *
 * Copyright (c) 2016-2024 Objectionary.com
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included
 * in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

/*
 * @checkstyle PackageNameCheck (4 lines)
 */

package EOorg.EOeolang;

import org.eolang.Atom;
import org.eolang.Attr;
import org.eolang.Data;
import org.eolang.Dataized;
import org.eolang.PhDefault;
import org.eolang.Phi;
import org.eolang.Versionized;
import org.eolang.XmirObject;

/**
 * Malloc.of.φ object.
 * @since 0.36.0
 * @checkstyle TypeNameCheck (5 lines)
 */
@Versionized
@XmirObject(oname = "malloc.of.@")
public final class EOmalloc$EOof$EOφ extends PhDefault implements Atom {
    @Override
    public Phi lambda() {
        final Phi rho = this.take(Attr.RHO);
        final int size = Math.toIntExact(
            new Dataized(rho.take("size")).take(Long.class)
        );
        final int identifier = Heaps.INSTANCE.malloc(this, size);
        final Phi res;
        try {
            final Phi allocated = rho.take("allocated");
            allocated.put("id", new Data.ToPhi((long) identifier));
            final Phi scope = rho.take("scope").copy();
            scope.put(0, allocated);
            new Dataized(scope).take();
            res = new Data.ToPhi(
                Heaps.INSTANCE.read(identifier, 0, size)
            );
        } finally {
            Heaps.INSTANCE.free(identifier);
        }
        return res;
    }
}