/**
* Returns a <code>String</code> that describes this shaper. This method is used for debugging
* purposes only.
*
* @return a <code>String</code> describing this shaper.
*/
public String toString() {
StringBuilder buf = new StringBuilder(super.toString());
buf.append("[contextual:").append(isContextual());
String[] keyNames = null;
if (isContextual()) {
buf.append(", context:");
buf.append(shapingRange == null ? Range.values()[key] : shapingRange);
}
if (rangeSet == null) {
buf.append(", range(s): ");
boolean first = true;
for (int i = 0; i < NUM_KEYS; ++i) {
if ((mask & (1 << i)) != 0) {
if (first) {
first = false;
} else {
buf.append(", ");
}
buf.append(Range.values()[i]);
}
}
} else {
buf.append(", range set: ").append(rangeSet);
}
buf.append(']');
return buf.toString();
}
private static Set<Range> maskToRangeSet(int mask) {
Set<Range> set = EnumSet.noneOf(Range.class);
Range[] a = Range.values();
for (int i = 0; i < NUM_KEYS; i++) {
if ((mask & (1 << i)) != 0) {
set.add(a[i]);
}
}
return set;
}
/**
* Converts the digits in the text that occur between start and start + count, using the provided
* context. Context is ignored if the shaper is not a contextual shaper.
*
* @param text an array of characters
* @param start the index into <code>text</code> to start converting
* @param count the number of characters in <code>text</code> to convert
* @param context the context to which to convert the characters, such as <code>
* NumericShaper.EUROPEAN</code>
* @throws IndexOutOfBoundsException if start or start + count is out of bounds
* @throws NullPointerException if text is null
* @throws IllegalArgumentException if this is a contextual shaper and the specified <code>context
* </code> is not a single valid range.
*/
public void shape(char[] text, int start, int count, int context) {
checkParams(text, start, count);
if (isContextual()) {
int ctxKey = getKeyFromMask(context);
if (rangeSet == null) {
shapeContextually(text, start, count, ctxKey);
} else {
shapeContextually(text, start, count, Range.values()[ctxKey]);
}
} else {
shapeNonContextually(text, start, count);
}
}
private static Range indexToRange(int index) {
return index < NUM_KEYS ? Range.values()[index] : null;
}