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ICU-352 disallow bad ranges

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X-SVN-Rev: 1458
This commit is contained in:
Alan Liu 2000-05-24 18:25:27 +00:00
parent 21f4b2ab47
commit ed528c7b3a
1 changed files with 8 additions and 0 deletions
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8
icu4c/source/i18n/uniset.cpp
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@ -703,6 +703,14 @@ UnicodeString& UnicodeSet::parse(UnicodeString& pairsBuf /*result*/,
} else if (lastOp == 0 && !isLiteral && (c == HYPHEN || c == INTERSECTION)) {
lastOp = c;
} else if (lastOp == HYPHEN) {
if (lastChar >= c) {
// Don't allow redundant (a-a) or empty (b-a) ranges;
// these are most likely typos.
//throw new IllegalArgumentException("Invalid range " + lastChar +
// '-' + c);
status = U_ILLEGAL_ARGUMENT_ERROR;
return pairsBuf;
}
addPair(pairsBuf, (UChar)lastChar, c);
lastOp = 0;
lastChar = -1;