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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * The Universal Permissive License (UPL), Version 1.0
 *
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 * person obtaining a copy of this software, associated documentation and/or
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 * unmodified Software as contributed to or provided by such licensor, or (ii)
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 * (a) the Software, and
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package org.pkl.thirdparty.graalvm.options;

/**
 * Represents a set of option values based on an {@link OptionDescriptor}.
 *
 * @since 19.0
 */
public interface OptionValues {

    /**
     * Returns all available options.
     *
     * @since 19.0
     */
    OptionDescriptors getDescriptors();

    /**
     * Sets the value of {@code optionKey} to {@code value}.
     *
     * @throws UnsupportedOperationException because this operation has been deprecated and is no
     *             longer supported, in order for OptionValues to be read-only.
     *
     * @since 19.0
     * @deprecated {@link OptionValues} should be read-only. If the value of an option needs to be
     *             altered after options are set, then the new value should be stored in the
     *             language's context or instrument fields and read from there.
     */
    @Deprecated(since = "22.0")
    @SuppressWarnings("unused")
    default  void set(OptionKey optionKey, T value) {
        throw new UnsupportedOperationException();
    }

    /**
     * Returns the value of a given option. {@link #hasBeenSet(OptionKey)} can be used to know
     * whether the value was explicitly set, or is the {@link OptionKey#getDefaultValue() default
     * value}.
     *
     * @since 19.0
     */
     T get(OptionKey optionKey);

    /**
     * Determines if a value for {@code optionKey} has been set explicitly by the {@code Context} or
     * {@code Engine}, and therefore {@link #get(OptionKey)} does not call
     * {@link OptionKey#getDefaultValue()}.
     *
     * @since 19.0
     */
    boolean hasBeenSet(OptionKey optionKey);

    /**
     * Determines if a value for any of the option keys in {@link #getDescriptors() option
     * descriptors} {@link #hasBeenSet(OptionKey) has been set}.
     *
     * @since 19.0
     */
    default boolean hasSetOptions() {
        for (OptionDescriptor descriptor : getDescriptors()) {
            if (hasBeenSet(descriptor.getKey())) {
                return true;
            }
        }
        return false;
    }

}