mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
129 lines
4.2 KiB
C++
129 lines
4.2 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/>.
|
|
*/
|
|
/**
|
|
* Analysis part of inline assembly.
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <liblangutil/Exceptions.h>
|
|
#include <liblangutil/EVMVersion.h>
|
|
|
|
#include <libyul/Dialect.h>
|
|
#include <libyul/AsmScope.h>
|
|
#include <libyul/AsmDataForward.h>
|
|
|
|
#include <libyul/backends/evm/AbstractAssembly.h>
|
|
|
|
#include <boost/variant.hpp>
|
|
#include <boost/optional.hpp>
|
|
|
|
#include <functional>
|
|
#include <memory>
|
|
|
|
namespace langutil
|
|
{
|
|
class ErrorReporter;
|
|
struct SourceLocation;
|
|
}
|
|
|
|
namespace yul
|
|
{
|
|
|
|
struct AsmAnalysisInfo;
|
|
|
|
/**
|
|
* Performs the full analysis stage, calls the ScopeFiller internally, then resolves
|
|
* references and performs other checks.
|
|
* If all these checks pass, code generation should not throw errors.
|
|
*/
|
|
class AsmAnalyzer: public boost::static_visitor<bool>
|
|
{
|
|
public:
|
|
explicit AsmAnalyzer(
|
|
AsmAnalysisInfo& _analysisInfo,
|
|
langutil::ErrorReporter& _errorReporter,
|
|
dev::solidity::EVMVersion _evmVersion,
|
|
boost::optional<langutil::Error::Type> _errorTypeForLoose,
|
|
std::shared_ptr<Dialect> _dialect,
|
|
ExternalIdentifierAccess::Resolver const& _resolver = ExternalIdentifierAccess::Resolver()
|
|
):
|
|
m_resolver(_resolver),
|
|
m_info(_analysisInfo),
|
|
m_errorReporter(_errorReporter),
|
|
m_evmVersion(_evmVersion),
|
|
m_dialect(std::move(_dialect)),
|
|
m_errorTypeForLoose(_errorTypeForLoose)
|
|
{}
|
|
|
|
bool analyze(Block const& _block);
|
|
|
|
static AsmAnalysisInfo analyzeStrictAssertCorrect(
|
|
std::shared_ptr<Dialect> _dialect,
|
|
dev::solidity::EVMVersion _evmVersion,
|
|
Block const& _ast
|
|
);
|
|
|
|
bool operator()(Instruction const&);
|
|
bool operator()(Literal const& _literal);
|
|
bool operator()(Identifier const&);
|
|
bool operator()(FunctionalInstruction const& _functionalInstruction);
|
|
bool operator()(Label const& _label);
|
|
bool operator()(ExpressionStatement const&);
|
|
bool operator()(StackAssignment const&);
|
|
bool operator()(Assignment const& _assignment);
|
|
bool operator()(VariableDeclaration const& _variableDeclaration);
|
|
bool operator()(FunctionDefinition const& _functionDefinition);
|
|
bool operator()(FunctionCall const& _functionCall);
|
|
bool operator()(If const& _if);
|
|
bool operator()(Switch const& _switch);
|
|
bool operator()(ForLoop const& _forLoop);
|
|
bool operator()(Block const& _block);
|
|
|
|
private:
|
|
/// Visits the statement and expects it to deposit one item onto the stack.
|
|
bool expectExpression(Expression const& _expr);
|
|
bool expectDeposit(int _deposit, int _oldHeight, langutil::SourceLocation const& _location);
|
|
|
|
/// Verifies that a variable to be assigned to exists and has the same size
|
|
/// as the value, @a _valueSize, unless that is equal to -1.
|
|
bool checkAssignment(Identifier const& _assignment, size_t _valueSize = size_t(-1));
|
|
|
|
Scope& scope(Block const* _block);
|
|
void expectValidType(std::string const& type, langutil::SourceLocation const& _location);
|
|
void warnOnInstructions(dev::solidity::Instruction _instr, langutil::SourceLocation const& _location);
|
|
|
|
/// Depending on @a m_flavour and @a m_errorTypeForLoose, throws an internal compiler
|
|
/// exception (if the flavour is not Loose), reports an error/warning
|
|
/// (if m_errorTypeForLoose is set) or does nothing.
|
|
void checkLooseFeature(langutil::SourceLocation const& _location, std::string const& _description);
|
|
|
|
int m_stackHeight = 0;
|
|
yul::ExternalIdentifierAccess::Resolver m_resolver;
|
|
Scope* m_currentScope = nullptr;
|
|
/// Variables that are active at the current point in assembly (as opposed to
|
|
/// "part of the scope but not yet declared")
|
|
std::set<Scope::Variable const*> m_activeVariables;
|
|
AsmAnalysisInfo& m_info;
|
|
langutil::ErrorReporter& m_errorReporter;
|
|
dev::solidity::EVMVersion m_evmVersion;
|
|
std::shared_ptr<Dialect> m_dialect;
|
|
boost::optional<langutil::Error::Type> m_errorTypeForLoose;
|
|
};
|
|
|
|
}
|