public Set<Position> getAllMatches(
Playfield<E> haystack, Playfield<E> needle, Matcher<E, E> matcher) {
Set<Position> results = new HashSet<Position>();
IntegerElement haystackWidth = haystack.getMaxX().subtract(haystack.getMinX()).succ();
IntegerElement haystackHeight = haystack.getMaxY().subtract(haystack.getMinY()).succ();
IntegerElement needleWidth = needle.getMaxX().subtract(needle.getMinX()).succ();
IntegerElement needleHeight = needle.getMaxY().subtract(needle.getMinY()).succ();
if (needleWidth.compareTo(haystackWidth) > 0 || needleHeight.compareTo(haystackHeight) > 0) {
// thing being sought is larger than the thing seeking in, so, no
return results;
}
IntegerElement xSpan = haystackWidth.subtract(needleWidth).succ();
IntegerElement ySpan = haystackHeight.subtract(needleHeight).succ();
IntegerElement x, y;
for (x = IntegerElement.ZERO; x.compareTo(xSpan) < 0; x = x.succ()) {
for (y = IntegerElement.ZERO; y.compareTo(ySpan) < 0; y = y.succ()) {
if (isMatchAt(haystack, needle, matcher, x, y)) {
results.add(new Position(x, y));
} else {
}
}
}
return results;
}
public List<Rule> findAllRules() {
IntegerElement x, y;
ArrayList<Rule> rules = new ArrayList<Rule>();
for (x = (IntegerElement) getMinX(); x.compareTo(getMaxX()) <= 0; x = x.succ()) {
for (y = (IntegerElement) getMinY(); y.compareTo(getMaxY()) <= 0; y = y.succ()) {
boolean escaped = (!y.isZero() && get(x, y.pred()).getChar() != ' ');
if (escaped) continue;
if (get(x, y).getChar() == '(') {
// System.out.println("Found a rule start at " + x + ", " + y);
IntegerElement x2 = x;
CharacterElement g = get(x2, y);
while (g.getChar() != ')' && x2.compareTo(getMaxX()) <= 0) {
x2 = x2.succ();
g = get(x2, y);
}
if (g.getChar() != ')') continue;
// System.out.println("Found a rule from " + x + "," + y + " to " + x2);
CharacterElement w = get(x2.pred(), y);
if (w.getChar() == ' ') w = null;
Rule r = new Rule(this, x.succ(), y.succ(), (x2.subtract(x)).pred(), w);
rules.add(r);
}
}
}
return rules;
}