| private isValidCodePoint ( int par0 ) : bool | ||
| par0 | int | |
| Résultat | bool | |
public String(int[] codePoints, int offset, int count)
{
if (offset < 0)
{
throw new IndexOutOfRangeException();
}
if (count < 0)
{
throw new IndexOutOfRangeException();
}
// Note: offset or count might be near -1>>>1.
if (offset > codePoints.Length - count)
{
throw new IndexOutOfRangeException();
}
int end = offset + count;
// Pass 1: Compute precise size of char[]
int n = count;
for (int i = offset; i < end; i++)
{
int c = codePoints[i];
if (Character.isBmpCodePoint(c))
{
continue;
}
else if (Character.isValidCodePoint(c))
{
n++;
}
else
{
throw new IllegalArgumentException();
}
}
// Pass 2: Allocate and fill in char[]
char[] v = new char[n];
for (int i = offset, j = 0; i < end; i++, j++)
{
int c = codePoints[i];
if (Character.isBmpCodePoint(c))
{
v[j] = (char)c;
}
else
{
Character.toSurrogates(c, v, j++);
}
}
this.value = v;
}
private int lastIndexOfSupplementary(int ch, int fromIndex)
{
if (Character.isValidCodePoint(ch))
{
char[] value = this.value;
char hi = Character.highSurrogate(ch);
char lo = Character.lowSurrogate(ch);
int i = Math.min(fromIndex, value.Length - 2);
for (; i >= 0; i--)
{
if (value[i] == hi && value[i + 1] == lo)
{
return(i);
}
}
}
return(-1);
}
private int indexOfSupplementary(int ch, int fromIndex)
{
if (Character.isValidCodePoint(ch))
{
char[] value = this.value;
char hi = Character.highSurrogate(ch);
char lo = Character.lowSurrogate(ch);
int max = value.Length - 1;
for (int i = fromIndex; i < max; i++)
{
if (value[i] == hi && value[i + 1] == lo)
{
return(i);
}
}
}
return(-1);
}
public virtual AbstractStringBuilder appendCodePoint(int codePoint)
{
int count = this.count;
if (Character.isBmpCodePoint(codePoint))
{
ensureCapacityInternal(count + 1);
value[count] = (char)codePoint;
this.count = count + 1;
}
else if (Character.isValidCodePoint(codePoint))
{
ensureCapacityInternal(count + 2);
Character.toSurrogates(codePoint, value, count);
this.count = count + 2;
}
else
{
throw new IllegalArgumentException();
}
return(this);
}
