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Clarity is an open source replay parser for Dota 2, CSGO, CS2 and Deadlock written in Java.

There is a newer version: 3.1.1

package skadistats.clarity.io.s2.field;

import skadistats.clarity.io.Util;
import skadistats.clarity.io.s2.Field;
import skadistats.clarity.io.s2.FieldType;
import skadistats.clarity.model.state.ArrayEntityState;

public class ArrayField extends Field {

    private final Field elementField;
    private final int length;

    public ArrayField(FieldType fieldType, Field elementField, int length) {
        super(fieldType);
        this.elementField = elementField;
        this.length = length;
    }

    @Override
    public Field getChild(int idx) {
        return elementField;
    }

    @Override
    public Integer getChildIndex(String nameSegment) {
        return Util.stringToArrayIdx(nameSegment);
    }

    @Override
    public String getChildNameSegment(int idx) {
        return Util.arrayIdxToString(idx);
    }

    @Override
    public void ensureArrayEntityStateCapacity(ArrayEntityState state, int capacity) {
        state.capacity(length);
    }

    @Override
    public Object getArrayEntityState(ArrayEntityState state, int idx) {
        return state.sub(idx).length();
    }

}