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Reduce string copying and allocation in the parser by only copying the scanner buffer when we need to mutate the string. Allow a nsDependentString / nsDependentSubstring to be created without being bound to anything. Move StripChar() onto nsSubstring from nsString. Bug 269853, r=jst, sr=darin.

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git-svn-id: svn://10.0.0.236/trunk@165773 18797224-902f-48f8-a5cc-f745e15eee43
This commit is contained in:
bryner%brianryner.com
2004-11-25 07:03:20 +00:00
parent 2e6bee01c4
commit 7a461c49a4
17 changed files with 458 additions and 138 deletions
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24
mozilla/xpcom/string/src/nsTStringObsolete.cpp
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@@ -299,30 +299,6 @@ nsTString_CharT::StripChars( const char* aSet )
mLength = nsBufferRoutines<CharT>::strip_chars(mData, mLength, aSet);
}
void
nsTString_CharT::StripChar( char_type aChar, PRInt32 aOffset )
{
if (mLength == 0 || aOffset >= PRInt32(mLength))
return;
EnsureMutable(); // XXX do this lazily?
// XXXdarin this code should defer writing until necessary.
char_type* to = mData + aOffset;
char_type* from = mData + aOffset;
char_type* end = mData + mLength;
while (from < end)
{
char_type theChar = *from++;
if (aChar != theChar)
*to++ = theChar;
}
*to = char_type(0); // add the null
mLength = to - mData;
}
void
nsTString_CharT::StripWhitespace()
{