solidity/libsolidity/analysis/PostTypeContractLevelChecker.cpp
Tyler 519e1c9402 Specify namespaces
Fix references into solidity::util
2022-03-08 00:09:17 -05:00

73 lines
2.4 KiB
C++

/*
This file is part of solidity.
solidity is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
solidity is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with solidity. If not, see <http://www.gnu.org/licenses/>.
*/
// SPDX-License-Identifier: GPL-3.0
/**
* Component that verifies overloads, abstract contracts, function clashes and others
* checks at contract or function level.
*/
#include <libsolidity/analysis/PostTypeContractLevelChecker.h>
#include <libsolidity/ast/AST.h>
#include <libsolutil/FunctionSelector.h>
#include <liblangutil/ErrorReporter.h>
using namespace std;
using namespace solidity;
using namespace solidity::langutil;
using namespace solidity::frontend;
bool PostTypeContractLevelChecker::check(SourceUnit const& _sourceUnit)
{
bool noErrors = true;
for (auto* contract: ASTNode::filteredNodes<ContractDefinition>(_sourceUnit.nodes()))
if (!check(*contract))
noErrors = false;
return noErrors;
}
bool PostTypeContractLevelChecker::check(ContractDefinition const& _contract)
{
solAssert(
_contract.annotation().creationCallGraph.set() &&
_contract.annotation().deployedCallGraph.set(),
""
);
map<uint32_t, map<string, SourceLocation>> errorHashes;
for (ErrorDefinition const* error: _contract.interfaceErrors())
{
string signature = error->functionType(true)->externalSignature();
uint32_t hash = util::selectorFromSignature32(signature);
// Fail if there is a different signature for the same hash.
if (!errorHashes[hash].empty() && !errorHashes[hash].count(signature))
{
SourceLocation& otherLocation = errorHashes[hash].begin()->second;
m_errorReporter.typeError(
4883_error,
error->nameLocation(),
SecondarySourceLocation{}.append("This error has a different signature but the same hash: ", otherLocation),
"Error signature hash collision for " + error->functionType(true)->externalSignature()
);
}
else
errorHashes[hash][signature] = error->location();
}
return !Error::containsErrors(m_errorReporter.errors());
}