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natString.cc (substring): optimize where substring is entire String.

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1999-07-22  Bryce McKinlay  <bryce@albatross.co.nz>

	* java/lang/natString.cc (substring): optimize where substring is
	entire String.
	* java/io/File.java (getName): don't return separator with file name.
	* java/io/natFile.cc (attr): fix overflow.

From-SVN: r28246
This commit is contained in:
Bryce McKinlay 1999-07-26 02:51:44 +00:00 • committed by Bryce McKinlay
parent 648d2ffce8
commit 41296e2a23
4 changed files with 11 additions and 4 deletions
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2
libjava/java/lang/natString.cc
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@ -687,6 +687,8 @@ java::lang::String::substring (jint beginIndex, jint endIndex)
{
if (beginIndex < 0 || endIndex > count || beginIndex > endIndex)
JvThrow (new StringIndexOutOfBoundsException());
if (beginIndex == 0 && endIndex == count)
return this;
jint newCount = endIndex - beginIndex;
if (newCount <= 8) // Optimization, mainly for GC.
return JvNewString(JvGetStringChars(this) + beginIndex, newCount);