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/*
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 <libsolidity/interface/Exceptions.h>
#include <boost/variant.hpp>
#include <functional>
#include <memory>
namespace dev
{
namespace solidity
{
namespace assembly
{
struct Literal;
struct Block;
struct Label;
struct FunctionalInstruction;
struct FunctionalAssignment;
struct VariableDeclaration;
struct Instruction;
struct Identifier;
struct Assignment;
struct FunctionDefinition;
struct FunctionCall;
struct Scope;
/**
* Performs the full analysis stage, calls the ScopeFiller internally, then resolves
* references and performs other checks.
* @todo Does not yet check for stack height issues.
*/
class AsmAnalyzer: public boost::static_visitor<bool>
{
public:
using Scopes = std::map<assembly::Block const*, std::shared_ptr<Scope>>;
/// @param _allowFailedLookups if true, allow failed lookups for variables (they
/// will be provided from the environment later on)
AsmAnalyzer(Scopes& _scopes, ErrorList& _errors, bool _allowFailedLookups);
bool analyze(assembly::Block const& _block);
bool operator()(assembly::Instruction const&) { return true; }
bool operator()(assembly::Literal const& _literal);
bool operator()(assembly::Identifier const&);
bool operator()(assembly::FunctionalInstruction const& _functionalInstruction);
bool operator()(assembly::Label const&) { return true; }
bool operator()(assembly::Assignment const&);
bool operator()(assembly::FunctionalAssignment const& _functionalAssignment);
bool operator()(assembly::VariableDeclaration const& _variableDeclaration);
bool operator()(assembly::FunctionDefinition const& _functionDefinition);
bool operator()(assembly::FunctionCall const& _functionCall);
bool operator()(assembly::Block const& _block);
private:
bool checkAssignment(assembly::Identifier const& _assignment);
Scope& scope(assembly::Block const* _block);
bool m_allowFailedLookups = false;
Scope* m_currentScope = nullptr;
Scopes& m_scopes;
ErrorList& m_errors;
};
}
}
}
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