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6467b4302d
Sometimes we can avoid the StringBuffer object:
t1 = new P.StringBuffer(leftDelimiter);
t1.writeAll$2(parts, ", ");
t1 = t1._contents += rightDelimiter;
return t1.charCodeAt(0) == 0 ? t1 : t1;
-->
t1 = P.StringBuffer__writeAll(leftDelimiter, parts, ", ") + rightDelimiter;
return t1.charCodeAt(0) == 0 ? t1 : t1;
Also updated tests with missing cases.
R=lrn@google.com
Committed: https://code.google.com/p/dart/source/detail?r=45184
Reverted: https://code.google.com/p/dart/source/detail?r=45186
Review URL: https://codereview.chromium.org//1086043002
git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@45188 260f80e4-7a28-3924-810f-c04153c831b5
52 lines
1.5 KiB
Dart
52 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 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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