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package com.fitbur.mockito.bytebuddy.description.modifier;

import com.fitbur.mockito.bytebuddy.jar.asm.Opcodes;

/**
 * Defines if a type or member is supposed to be marked as synthetic.
 */
public enum SyntheticState implements ModifierContributor.ForType,
        ModifierContributor.ForMethod,
        ModifierContributor.ForField,
        ModifierContributor.ForParameter {

    /**
     * Modifier for not marking a type member as synthetic. (This is the default modifier.)
     */
    PLAIN(EMPTY_MASK),

    /**
     * Modifier for marking a type member as synthetic.
     */
    SYNTHETIC(Opcodes.ACC_SYNTHETIC);

    /**
     * The mask of the modifier contributor.
     */
    private final int mask;

    /**
     * Creates a new synthetic state representation.
     *
     * @param mask The modifier mask of this instance.
     */
    SyntheticState(int mask) {
        this.mask = mask;
    }

    /**
     * Creates a synthetic state from a boolean value indicating if a type or member is supposed to be synthetic.
     *
     * @param synthetic {@code true} if the state is supposed to be synthetic.
     * @return The corresponding synthetic state.
     */
    public static SyntheticState is(boolean synthetic) {
        return synthetic ? SYNTHETIC : PLAIN;
    }

    @Override
    public int getMask() {
        return mask;
    }

    @Override
    public int getRange() {
        return Opcodes.ACC_SYNTHETIC;
    }

    @Override
    public boolean isDefault() {
        return this == PLAIN;
    }

    /**
     * Checks if the current state describes the synthetic state.
     *
     * @return {@code true} if the current state is synthetic.
     */
    public boolean isSynthetic() {
        return this == SYNTHETIC;
    }

    @Override
    public String toString() {
        return "SyntheticState." + name();
    }
}