mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
73 lines
2.4 KiB
C++
73 lines
2.4 KiB
C++
/*
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This file is part of solidity.
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solidity is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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solidity is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with solidity. If not, see <http://www.gnu.org/licenses/>.
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*/
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// SPDX-License-Identifier: GPL-3.0
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/**
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* Component that verifies overloads, abstract contracts, function clashes and others
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* checks at contract or function level.
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*/
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#include <libsolidity/analysis/PostTypeContractLevelChecker.h>
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#include <libsolidity/ast/AST.h>
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#include <libsolutil/FunctionSelector.h>
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#include <liblangutil/ErrorReporter.h>
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using namespace std;
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using namespace solidity;
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using namespace solidity::langutil;
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using namespace solidity::frontend;
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bool PostTypeContractLevelChecker::check(SourceUnit const& _sourceUnit)
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{
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bool noErrors = true;
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for (auto* contract: ASTNode::filteredNodes<ContractDefinition>(_sourceUnit.nodes()))
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if (!check(*contract))
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noErrors = false;
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return noErrors;
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}
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bool PostTypeContractLevelChecker::check(ContractDefinition const& _contract)
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{
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solAssert(
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_contract.annotation().creationCallGraph.set() &&
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_contract.annotation().deployedCallGraph.set(),
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""
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);
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map<uint32_t, map<string, SourceLocation>> errorHashes;
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for (ErrorDefinition const* error: _contract.interfaceErrors())
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{
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string signature = error->functionType(true)->externalSignature();
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uint32_t hash = selectorFromSignature32(signature);
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// Fail if there is a different signature for the same hash.
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if (!errorHashes[hash].empty() && !errorHashes[hash].count(signature))
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{
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SourceLocation& otherLocation = errorHashes[hash].begin()->second;
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m_errorReporter.typeError(
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4883_error,
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error->nameLocation(),
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SecondarySourceLocation{}.append("This error has a different signature but the same hash: ", otherLocation),
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"Error signature hash collision for " + error->functionType(true)->externalSignature()
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);
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}
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else
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errorHashes[hash][signature] = error->location();
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}
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return Error::containsOnlyWarnings(m_errorReporter.errors());
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}
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