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QuestDB is High Performance Time Series Database

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 * Copyright (C) 2014-2016 Appsicle
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 * as published by the Free Software Foundation.
 *
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package com.questdb.std;

import com.questdb.std.str.AbstractCharSequence;

public class SplitCharSequence extends AbstractCharSequence {
    private CharSequence lhs;
    private CharSequence rhs;
    private int rl;
    private int split;

    public void init(CharSequence lhs, CharSequence rhs) {
        this.lhs = lhs;
        this.rhs = rhs;
        this.rl = rhs == null ? 0 : rhs.length();
        this.split = lhs == null ? 0 : lhs.length();
    }

    @Override
    public int length() {
        return split + rl;
    }

    @Override
    public char charAt(int index) {
        if (index < split) {
            return lhs.charAt(index);
        } else {
            return rhs.charAt(index - split);
        }
    }
}