2021-07-23 15:48:51 +00:00
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package com.fastasyncworldedit.core.util;
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2019-11-02 19:35:51 +00:00
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public class JoinedCharSequence implements CharSequence {
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private char join;
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private int len2;
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private int len1;
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private int length;
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private String a;
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private String b;
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public JoinedCharSequence init(String a, char join, String b) {
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this.len1 = a.length();
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this.len2 = b.length();
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this.length = len1 + len2 + 1;
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this.join = join;
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this.a = a;
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this.b = b;
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return this;
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}
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@Override
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public int length() {
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return length;
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}
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@Override
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public char charAt(int index) {
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if (index < len1) {
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return a.charAt(index);
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}
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if (index == len1) {
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return join;
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}
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return b.charAt(index - len1 - 1);
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}
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@Override
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public CharSequence subSequence(int start, int end) {
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char[] chars = new char[end - start];
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for (int i = start, j = 0; i < end; i++, j++) {
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chars[j] = charAt(i);
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}
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return new String(chars);
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}
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@Override
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public int hashCode() {
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int h = 0;
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for (int i = 0; i < length; i++) {
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h = 31 * h + charAt(i);
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}
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return h;
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}
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@Override
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public String toString() {
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return (String) subSequence(0, length);
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}
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@Override
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public boolean equals(Object obj) {
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CharSequence anotherString = (CharSequence) obj;
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if (length == anotherString.length()) {
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for (int i = length - 1; i >= 0; i--) {
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2020-10-05 17:41:41 +00:00
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if (charAt(i) != anotherString.charAt(i)) {
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return false;
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}
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2019-11-02 19:35:51 +00:00
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}
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return true;
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}
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return false;
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}
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}
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