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package com.firefly.utils.json.parser;

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

import com.firefly.utils.ReflectUtils;
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;

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