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A lightweight JSON processing framework.

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/*
 * Copyright © 2024 Metreeca srl
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.metreeca.json;

import java.io.IOException;
import java.time.format.DateTimeParseException;
import java.util.function.Function;

import static com.metreeca.json.JSONEvent.STRING;

final class JSONPluginLiteral implements JSONPlugin {

    private final Function encoder;
    private final Function decoder;


    JSONPluginLiteral(final Function encoder, final Function decoder) {
        this.encoder=encoder;
        this.decoder=decoder;
    }


    @Override public void encode(final JSONWriter writer, final T value) throws IOException {
        writer.string(encoder.apply(value));
    }

    @Override public T decode(final JSONReader reader, final Class clazz) throws IOException, JSONException {

        final String token=reader.token(STRING);

        try {

            return decoder.apply(token);

        } catch ( final DateTimeParseException e ) {

            return reader.error("malformed %s value <%s>: %s", clazz.getSimpleName(), token, e.getMessage());

        }
    }

}