Ilya Gorbunov
67 lines
1.9 KiB
Kotlin
67 lines
1.9 KiB
Kotlin
/*
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* Copyright 2010-2016 JetBrains s.r.o.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package kotlin.text
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public interface Appendable {
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fun append(csq: CharSequence?): Appendable
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fun append(csq: CharSequence?, start: Int, end: Int): Appendable
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fun append(c: Char): Appendable
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}
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public class StringBuilder(content: String = "") : Appendable, CharSequence {
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constructor(capacity: Int) : this() {}
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constructor(content: CharSequence) : this(content.toString()) {}
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private var string: String = content
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override val length: Int
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get() = string.asDynamic().length
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override fun get(index: Int): Char = string[index]
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override fun subSequence(start: Int, end: Int): CharSequence = string.substring(start, end)
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override fun append(c: Char): StringBuilder {
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string += c
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return this
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}
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override fun append(csq: CharSequence?): StringBuilder {
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string += csq.toString()
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return this
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}
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override fun append(csq: CharSequence?, start: Int, end: Int): StringBuilder {
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string += csq.toString().substring(start, end)
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return this
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}
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fun append(obj: Any?): StringBuilder {
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string += obj.toString()
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return this
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}
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fun reverse(): StringBuilder {
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string = string.asDynamic().split("").reverse().join("")
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return this
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}
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override fun toString(): String = string
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}
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