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cherry-pick bugfix to opensource

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This commit is contained in:
obdev
2021-07-12 15:04:52 +08:00
committed by wangzelin.wzl
parent e47392397a
commit 94ba0a393b
7 changed files with 59 additions and 10 deletions
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34
deps/oblib/src/lib/number/ob_number_v2.cpp vendored
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@ -344,7 +344,9 @@ int ObNumber::from_sci_(const char* str, const int64_t length, IAllocator& alloc
}
}
if (OB_SUCC(ret) && (has_digit || 0 < i_nth) && ('e' == cur || 'E' == cur)) {
if (OB_SUCC(ret) && (has_digit || 0 < i_nth)
&& ('e' == cur || 'E' == cur)
&& is_valid_sci_tail_(str, length, i)) {
LOG_DEBUG("ObNumber from sci",
K(ret),
K(i),
@ -6629,6 +6631,36 @@ int ObNumber::cast_to_int64(int64_t& value) const
return ret;
}
/**
* check whether a sci format string has a valid exponent part
* valid : 1.8E-1/1.8E1 invalid : 1.8E, 1.8Ea, 1.8E-a
* @param str string need to parse
* @param length length of str
* @param e_pos index of 'E'
*/
bool ObNumber::is_valid_sci_tail_(const char *str,
const int64_t length,
const int64_t e_pos)
{
bool res = false;
if (e_pos == length - 1) {
//like 1.8e, false
} else if (e_pos < length - 1) {
if ('+' == str[e_pos + 1] || '-' == str[e_pos + 1]) {
if (e_pos < length - 2 && str[e_pos + 2] >= '0' && str[e_pos + 2] <= '9') {
res = true;
} else {
//like 1.8e+, false
}
} else if (str[e_pos + 1] >= '0' && str[e_pos + 1] <= '9') {
res = true;
} else {
//like 1.8ea, false
}
}
return res;
}
void ObNumber::set_one()
{
if (OB_ISNULL(digits_)) {