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Fix parsing fixed point values.

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This commit is contained in:
chriseth 2021-08-17 13:50:19 +02:00
parent 948665ff89
commit 063d481bb3
1 changed files with 13 additions and 4 deletions
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17
test/libsolidity/util/BytesUtils.cpp
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@ -94,12 +94,21 @@ bytes BytesUtils::convertNumber(string const& _literal)
bytes BytesUtils::convertFixedPoint(string const& _literal, size_t& o_fractionalDigits)
{
size_t dotPos = _literal.find('.');
string valueInteger = _literal.substr(0, dotPos);
string valueFraction = _literal.substr(dotPos + 1);
o_fractionalDigits = valueFraction.length();
o_fractionalDigits = dotPos < _literal.size() ? _literal.size() - dotPos : 0;
bool negative = !_literal.empty() && _literal.at(0) == '-';
// remove decimal point
string valueInteger = _literal.substr(0, dotPos) + _literal.substr(dotPos + 1);
// erase leading zeros to avoid parsing as octal.
while (!valueInteger.empty() && (valueInteger.at(0) == '0' || valueInteger.at(0) == '-'))
valueInteger.erase(valueInteger.begin());
if (valueInteger.empty())
valueInteger = "0";
try
{
return util::toBigEndian(u256(valueInteger + valueFraction));
u256 value(valueInteger);
if (negative)
value = s2u(-u2s(value));
return util::toBigEndian(value);
}
catch (std::exception const&)
{