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package com.firefly.utils.json.parser;

import com.firefly.utils.ReflectUtils;
import com.firefly.utils.exception.CommonRuntimeException;
import com.firefly.utils.json.JsonReader;
import com.firefly.utils.json.Parser;
import com.firefly.utils.json.exception.JsonException;
import com.firefly.utils.json.support.ParserMetaInfo;

import java.io.IOException;
import java.lang.reflect.Array;
import java.util.ArrayList;
import java.util.List;

public class ArrayParser implements Parser {

    private ParserMetaInfo elementMetaInfo;

    public ArrayParser(Class clazz) {
        elementMetaInfo = new ParserMetaInfo();
        elementMetaInfo.setType(clazz);
        elementMetaInfo.setParser(ParserStateMachine.getParser(clazz, null));
    }

    @Override
    public Object convertTo(JsonReader reader, Class clazz) throws IOException {
        if (reader.isNull())
            return null;

        if (!reader.isArray())
            throw new JsonException("json string is not array format");

        if (reader.isEmptyArray())
            return Array.newInstance(elementMetaInfo.getType(), 0);

        List