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StringView.Intern

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Brian Fiete 2021-12-01 11:07:09 -08:00
parent 69f26e453d
commit 46fbba9712
1 changed files with 28 additions and 0 deletions
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28
BeefLibs/corlib/src/String.bf
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@ -3588,6 +3588,34 @@ namespace System
return StringSplitEnumerator(Ptr, Length, separators, count, options); return StringSplitEnumerator(Ptr, Length, separators, count, options);
} }
public String Intern()
{
using (String.[Friend]sMonitor.Enter())
{
bool needsLiteralPass = String.[Friend]sInterns.Count == 0;
String* internalLinkPtr = *((String**)(String.[Friend]sStringLiterals));
if (internalLinkPtr != String.[Friend]sPrevInternLinkPtr)
{
String.[Friend]sPrevInternLinkPtr = internalLinkPtr;
needsLiteralPass = true;
}
if (needsLiteralPass)
String.[Friend]CheckLiterals(String.[Friend]sStringLiterals);
String* entryPtr;
if (String.[Friend]sInterns.TryAddAlt(this, out entryPtr))
{
String result = new String(mLength + 1);
result.Append(this);
result.EnsureNullTerminator();
*entryPtr = result;
String.[Friend]sOwnedInterns.Add(result);
return result;
}
return *entryPtr;
}
}
public static operator StringView (String str) public static operator StringView (String str)
{ {
StringView sv; StringView sv;