Leaf Petersen
0aaa1c5fc8
Change-Id: Id6a784ca45d702785aaa662b9d5d9ac6b6c46b43 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/123621 Reviewed-by: Lasse R.H. Nielsen <lrn@google.com>
51 lines
1.5 KiB
Dart
51 lines
1.5 KiB
Dart
// Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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part of dart.core;
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/**
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* A class for concatenating strings efficiently.
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*
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* Allows for the incremental building of a string using write*() methods.
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* The strings are concatenated to a single string only when [toString] is
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* called.
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*/
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class StringBuffer implements StringSink {
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/** Creates the string buffer with an initial content. */
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external StringBuffer([Object content = ""]);
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/**
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* Returns the length of the content that has been accumulated so far.
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* This is a constant-time operation.
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*/
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external int get length;
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/** Returns whether the buffer is empty. This is a constant-time operation. */
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bool get isEmpty => length == 0;
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/**
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* Returns whether the buffer is not empty. This is a constant-time
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* operation.
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*/
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bool get isNotEmpty => !isEmpty;
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/// Adds the contents of [obj], converted to a string, to the buffer.
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external void write(Object? obj);
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/// Adds the string representation of [charCode] to the buffer.
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external void writeCharCode(int charCode);
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external void writeAll(Iterable<dynamic> objects, [String separator = ""]);
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external void writeln([Object? obj = ""]);
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/**
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* Clears the string buffer.
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*/
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external void clear();
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/// Returns the contents of buffer as a concatenated string.
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external String toString();
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}
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