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Faster Append(char32)

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This commit is contained in:
Brian Fiete 2020-03-25 06:26:59 -07:00
parent 2f78063927
commit b5815927ef
1 changed files with 43 additions and 7 deletions
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50
BeefLibs/corlib/src/String.bf
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@ -857,7 +857,7 @@ namespace System
ptr[mLength++] = c; ptr[mLength++] = c;
} }
public void Append(char8 c, int count = 1) public void Append(char8 c, int count)
{ {
if (count == 0) if (count == 0)
return; return;
@ -869,11 +869,52 @@ namespace System
ptr[mLength++] = c; ptr[mLength++] = c;
} }
public void Append(char32 c, int count = 1) public void Append(char32 c)
{
let ptr = Ptr;
if (c < (char32)0x80)
{
if (mLength + 1 > AllocSize)
Realloc(CalcNewSize(mLength + 1));
ptr[mLength++] = (char8)c;
}
else if (c < (char32)0x800)
{
if (mLength + 2 > AllocSize)
Realloc(CalcNewSize(mLength + 2));
ptr[mLength++] = (char8)(c>>6) | (char8)0xC0;
ptr[mLength++] = (char8)(c & (char8)0x3F) | (char8)0x80;
}
else if (c < (char32)0x10000)
{
if (mLength + 3 > AllocSize)
Realloc(CalcNewSize(mLength + 3));
ptr[mLength++] = (char8)(c>>12) | (char8)0xE0;
ptr[mLength++] = (char8)((c>>6) & (char8)0x3F) | (char8)0x80;
ptr[mLength++] = (char8)(c & (char8)0x3F) | (char8)0x80;
}
else if (c < (char32)0x110000)
{
if (mLength + 4 > AllocSize)
Realloc(CalcNewSize(mLength + 4));
ptr[mLength++] = (char8)((c>>18) | (char8)0xF0);
ptr[mLength++] = (char8)((c>>12) & (char8)0x3F) | (char8)0x80;
ptr[mLength++] = (char8)((c>>6) & (char8)0x3F) | (char8)0x80;
ptr[mLength++] = (char8)(c & (char8)0x3F) | (char8)0x80;
}
}
public void Append(char32 c, int count)
{ {
if (count == 0) if (count == 0)
return; return;
if (count == 1)
{
Append(c);
return;
}
int encodedLen = UTF8.GetEncodedLength(c); int encodedLen = UTF8.GetEncodedLength(c);
if (mLength + count * encodedLen > AllocSize) if (mLength + count * encodedLen > AllocSize)
@ -907,11 +948,6 @@ namespace System
} }
} }
/*public void Substring(int idx, int len, String outBuffer)
{
outBuffer.Append(this, idx, len);
}*/
public void EnsureNullTerminator() public void EnsureNullTerminator()
{ {
int allocSize = AllocSize; int allocSize = AllocSize;