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[SMTChecker] Support delete

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This commit is contained in:
Leonardo Alt
2019-05-06 18:32:10 +02:00
parent e99efec085
commit 2139c20776
8 changed files with 151 additions and 0 deletions
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libsolidity/formal/SMTChecker.cpp
+24
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@@ -546,6 +546,30 @@ void SMTChecker::endVisit(UnaryOperation const& _op)
);
break;
}
case Token::Delete:
{
auto const& subExpr = _op.subExpression();
if (auto decl = identifierToVariable(subExpr))
{
newValue(*decl);
setZeroValue(*decl);
}
else
{
solAssert(knownExpr(subExpr), "");
auto const& symbVar = m_expressions[&subExpr];
symbVar->increaseIndex();
setZeroValue(*symbVar);
if (dynamic_cast<IndexAccess const*>(&_op.subExpression()))
arrayIndexAssignment(_op.subExpression(), symbVar->currentValue());
else
m_errorReporter.warning(
_op.location(),
"Assertion checker does not yet implement \"delete\" for this expression."
);
}
break;
}
default:
m_errorReporter.warning(
_op.location(),