protected int toExactWidthRegex(
PatternAPI pattern,
Locale locale,
String flags,
Justification j,
char padding,
int width,
int precision,
String formatString,
int position) {
WidthMatchSubpatterns sub =
createSubpatterns(pattern, locale, flags, j, padding, width, precision);
sub.open();
sub.paddingWidth = -1;
int result =
appendExactWidthRegex(
sub, locale, flags, Justification.None, padding, -1, precision, formatString, position);
for (int w = 0; w <= width; w++) {
sub.paddingWidth = width - w;
int r =
appendExactWidthRegex(
sub, locale, flags, j, padding, w, precision, formatString, position);
if (r != IGNORE_SUBPATTERN) result = r;
}
sub.close();
pattern.putMemento(sub);
return result;
}
@Override
public Object parse(
MatcherAPI matcherAPI,
Matcher matcher,
int capturingBase,
Object memento,
Object lastArgValue) {
if (memento instanceof WidthMatchSubpatterns) {
WidthMatchSubpatterns sub = (WidthMatchSubpatterns) memento;
int n = sub.getMatchingPattern(matcher, capturingBase);
capturingBase += sub.getCapturingOffset(n);
Object m = sub.getMemento(n);
return parse(matcher, capturingBase, n - 1, m, lastArgValue);
} else {
return parse(matcher, capturingBase + 1, -2, memento, lastArgValue);
}
}
protected int appendExactWidthRegex(
WidthMatchSubpatterns sub,
Locale locale,
String flags,
Justification j,
char padding,
int width,
int precision,
String formatString,
int position) {
sub.beginSubpattern();
int r = toRegex(sub.api(), locale, flags, padding, width, precision, formatString, position);
if (r == IGNORE_SUBPATTERN) sub.ignoreSubpattern();
else sub.allowEmptySubpattern();
sub.endSubpattern();
return r;
}
