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Add String.Insert char32

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Use CalcNewSize in Insert.
Remove a duplicated Insert char8 by using default parameter.
Add new Insert method accepting char32.
This commit is contained in:
Damian Day 2020-03-24 18:09:21 +00:00
parent b8437bc67c
commit f2427119ef
1 changed files with 53 additions and 28 deletions
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81
BeefLibs/corlib/src/String.bf
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@ -1422,10 +1422,7 @@ namespace System
int_strsize length = (int_strsize)addString.Length;
int_strsize newLength = mLength + length;
if (newLength > AllocSize)
{
int newSize = Math.Max(AllocSize * 2, newLength);
Realloc(newSize);
}
Realloc(CalcNewSize(newLength));
let moveChars = mLength - idx;
let ptr = Ptr;
@ -1435,45 +1432,73 @@ namespace System
mLength = newLength;
}
public void Insert(int_strsize idx, char8 c)
public void Insert(int_strsize idx, char8 c, int count = 1)
{
Contract.Requires(idx >= 0);
int_strsize newLength = mLength + 1;
if (newLength > AllocSize)
{
int newSize = Math.Max(AllocSize * 2, newLength);
Realloc(newSize);
}
let moveChars = mLength - idx;
let ptr = Ptr;
if (moveChars > 0)
Internal.MemMove(ptr + idx + 1, ptr + idx, moveChars);
ptr[idx] = c;
mLength = newLength;
}
public void Insert(int_strsize idx, char8 c, int count)
{
Contract.Requires(idx >= 0);
if (count == 0)
return;
int_strsize newLength = mLength + (int_strsize)count;
if (newLength > AllocSize)
{
int newSize = Math.Max(AllocSize * 2, newLength);
Realloc(newSize);
}
Realloc(CalcNewSize(newLength));
let moveChars = mLength - idx;
let ptr = Ptr;
if (moveChars > 0)
Internal.MemMove(ptr + idx + count, ptr + idx, moveChars);
for (int i < count)
for (int_strsize i < count)
ptr[idx + i] = c;
mLength = newLength;
}
public void Insert(int_strsize idx, char32 c, int count = 1)
{
Contract.Requires(idx >= 0);
if (count == 0)
return;
int encodedLen = UTF8.GetEncodedLength(c);
if (mLength + count * encodedLen > AllocSize)
Realloc(CalcNewSize(mLength + count * encodedLen));
let moveChars = mLength - idx;
let ptr = Ptr;
if (moveChars > 0)
Internal.MemMove(ptr + idx + count, ptr + idx, moveChars);
for (int_strsize i < count)
{
if (c < (char32)0x80)
{
ptr[idx + i] = (char8)c;
mLength++;
}
else if (c < (char32)0x800)
{
ptr[idx + i] = (char8)(c>>6) | (char8)0xC0;
ptr[idx + i + 1] = (char8)(c & (char8)0x3F) | (char8)0x80;
mLength += 2;
}
else if (c < (char32)0x10000)
{
ptr[idx + i] = (char8)(c>>12) | (char8)0xE0;
ptr[idx + i + 1] = (char8)((c>>6) & (char8)0x3F) | (char8)0x80;
ptr[idx + i + 2] = (char8)(c & (char8)0x3F) | (char8)0x80;
mLength += 3;
}
else if (c < (char32)0x110000)
{
ptr[idx + i] = (char8)((c>>18) | (char8)0xF0);
ptr[idx + i + 1] = (char8)((c>>12) & (char8)0x3F) | (char8)0x80;
ptr[idx + i + 2] = (char8)((c>>6) & (char8)0x3F) | (char8)0x80;
ptr[idx + i + 3] = (char8)(c & (char8)0x3F) | (char8)0x80;
mLength += 4;
}
}
}
static bool EqualsHelper(char8* a, char8* b, int length)
{
for (int i = 0; i < length; i++)