// Generated by delombok at Sun Feb 26 12:31:38 KST 2017
package scouter.bytebuddy.implementation.bytecode.assign.primitive;

import scouter.bytebuddy.description.type.TypeDescription;
import scouter.bytebuddy.implementation.bytecode.Removal;
import scouter.bytebuddy.implementation.bytecode.StackManipulation;
import scouter.bytebuddy.implementation.bytecode.assign.Assigner;
import scouter.bytebuddy.implementation.bytecode.constant.DefaultValue;

/**
 * This assigner is able to handle the {@code void} type. This means:
 * <ol>
 * <li>If a {@code void} type is assigned to the {@code void} it will consider this a trivial operation.</li>
 * <li>If a {@code void} type is assigned to a non-{@code void} type, it will pop the top value from the stack.</li>
 * <li>If a non-{@code void} type is assigned to a {@code void} type, it will load the target type's default value
 * only if this was configured at the assigner's construction.</li>
 * <li>If two non-{@code void} types are subject of the assignment, it will delegate the assignment to its chained
 * assigner.</li>
 * </ol>
 */
public class VoidAwareAssigner implements Assigner {
    /**
     * An assigner that is capable of handling assignments that do not involve {@code void} types.
     */
    private final Assigner chained;

    /**
     * Creates a new assigner that is capable of handling void types.
     *
     * @param chained A chained assigner which will be queried by this assigner to handle assignments that
     * do not involve a {@code void} type.
     */
    public VoidAwareAssigner(Assigner chained) {
        this.chained = chained;
    }

    @Override
    public StackManipulation assign(TypeDescription.Generic source, TypeDescription.Generic target, Typing typing) {
        if (source.represents(void.class) && target.represents(void.class)) {
            return StackManipulation.Trivial.INSTANCE;
        } else if (source.represents(void.class) /* && target != void.class */) {
            return typing.isDynamic() ? DefaultValue.of(target) : StackManipulation.Illegal.INSTANCE;
        } else if (/* source != void.class && */ target.represents(void.class)) {
            return Removal.of(source);
        } else  /* source != void.class && target != void.class */ {
            return chained.assign(source, target, typing);
        }
    }

    @java.lang.Override
    @java.lang.SuppressWarnings("all")
    @javax.annotation.Generated("lombok")
    public boolean equals(final java.lang.Object o) {
        if (o == this) return true;
        if (!(o instanceof VoidAwareAssigner)) return false;
        final VoidAwareAssigner other = (VoidAwareAssigner) o;
        if (!other.canEqual((java.lang.Object) this)) return false;
        final java.lang.Object this$chained = this.chained;
        final java.lang.Object other$chained = other.chained;
        if (this$chained == null ? other$chained != null : !this$chained.equals(other$chained)) return false;
        return true;
    }

    @java.lang.SuppressWarnings("all")
    @javax.annotation.Generated("lombok")
    protected boolean canEqual(final java.lang.Object other) {
        return other instanceof VoidAwareAssigner;
    }

    @java.lang.Override
    @java.lang.SuppressWarnings("all")
    @javax.annotation.Generated("lombok")
    public int hashCode() {
        final int PRIME = 59;
        int result = 1;
        final java.lang.Object $chained = this.chained;
        result = result * PRIME + ($chained == null ? 43 : $chained.hashCode());
        return result;
    }
}