solidity/libsolidity/analysis/GlobalContext.cpp

116 lines
5.9 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/>.
*/
/**
* @author Christian <c@ethdev.com>
* @author Gav Wood <g@ethdev.com>
* @date 2014
* Container of the (implicit and explicit) global objects.
*/
#include <libsolidity/analysis/GlobalContext.h>
#include <libsolidity/ast/AST.h>
#include <libsolidity/ast/TypeProvider.h>
#include <libsolidity/ast/Types.h>
#include <memory>
using namespace std;
namespace dev
{
namespace solidity
{
inline vector<shared_ptr<MagicVariableDeclaration const>> constructMagicVariables()
{
static auto const magicVarDecl = [](string const& _name, Type const* _type) {
return make_shared<MagicVariableDeclaration>(_name, _type);
};
return {
magicVarDecl("abi", TypeProvider::magic(MagicType::Kind::ABI)),
magicVarDecl("addmod", TypeProvider::function(strings{"uint256", "uint256", "uint256"}, strings{"uint256"}, FunctionType::Kind::AddMod, false, StateMutability::Pure)),
magicVarDecl("assert", TypeProvider::function(strings{"bool"}, strings{}, FunctionType::Kind::Assert, false, StateMutability::Pure)),
magicVarDecl("block", TypeProvider::magic(MagicType::Kind::Block)),
magicVarDecl("blockhash", TypeProvider::function(strings{"uint256"}, strings{"bytes32"}, FunctionType::Kind::BlockHash, false, StateMutability::View)),
magicVarDecl("ecrecover", TypeProvider::function(strings{"bytes32", "uint8", "bytes32", "bytes32"}, strings{"address"}, FunctionType::Kind::ECRecover, false, StateMutability::Pure)),
magicVarDecl("gasleft", TypeProvider::function(strings(), strings{"uint256"}, FunctionType::Kind::GasLeft, false, StateMutability::View)),
magicVarDecl("keccak256", TypeProvider::function(strings{"bytes memory"}, strings{"bytes32"}, FunctionType::Kind::KECCAK256, false, StateMutability::Pure)),
magicVarDecl("log0", TypeProvider::function(strings{"bytes32"}, strings{}, FunctionType::Kind::Log0)),
magicVarDecl("log1", TypeProvider::function(strings{"bytes32", "bytes32"}, strings{}, FunctionType::Kind::Log1)),
magicVarDecl("log2", TypeProvider::function(strings{"bytes32", "bytes32", "bytes32"}, strings{}, FunctionType::Kind::Log2)),
magicVarDecl("log3", TypeProvider::function(strings{"bytes32", "bytes32", "bytes32", "bytes32"}, strings{}, FunctionType::Kind::Log3)),
magicVarDecl("log4", TypeProvider::function(strings{"bytes32", "bytes32", "bytes32", "bytes32", "bytes32"}, strings{}, FunctionType::Kind::Log4)),
magicVarDecl("msg", TypeProvider::magic(MagicType::Kind::Message)),
magicVarDecl("mulmod", TypeProvider::function(strings{"uint256", "uint256", "uint256"}, strings{"uint256"}, FunctionType::Kind::MulMod, false, StateMutability::Pure)),
magicVarDecl("now", TypeProvider::uint256()),
magicVarDecl("require", TypeProvider::function(strings{"bool"}, strings{}, FunctionType::Kind::Require, false, StateMutability::Pure)),
magicVarDecl("require", TypeProvider::function(strings{"bool", "string memory"}, strings{}, FunctionType::Kind::Require, false, StateMutability::Pure)),
magicVarDecl("revert", TypeProvider::function(strings(), strings(), FunctionType::Kind::Revert, false, StateMutability::Pure)),
magicVarDecl("revert", TypeProvider::function(strings{"string memory"}, strings(), FunctionType::Kind::Revert, false, StateMutability::Pure)),
magicVarDecl("ripemd160", TypeProvider::function(strings{"bytes memory"}, strings{"bytes20"}, FunctionType::Kind::RIPEMD160, false, StateMutability::Pure)),
magicVarDecl("selfdestruct", TypeProvider::function(strings{"address payable"}, strings{}, FunctionType::Kind::Selfdestruct)),
magicVarDecl("sha256", TypeProvider::function(strings{"bytes memory"}, strings{"bytes32"}, FunctionType::Kind::SHA256, false, StateMutability::Pure)),
magicVarDecl("sha3", TypeProvider::function(strings{"bytes memory"}, strings{"bytes32"}, FunctionType::Kind::KECCAK256, false, StateMutability::Pure)),
magicVarDecl("suicide", TypeProvider::function(strings{"address payable"}, strings{}, FunctionType::Kind::Selfdestruct)),
magicVarDecl("tx", TypeProvider::magic(MagicType::Kind::Transaction)),
magicVarDecl("type", TypeProvider::function(
strings{"address"} /* accepts any contract type, handled by the type checker */,
strings{} /* returns a MagicType, handled by the type checker */,
FunctionType::Kind::MetaType,
false,
StateMutability::Pure
)),
};
}
GlobalContext::GlobalContext(): m_magicVariables{constructMagicVariables()}
{
}
void GlobalContext::setCurrentContract(ContractDefinition const& _contract)
{
m_currentContract = &_contract;
}
vector<Declaration const*> GlobalContext::declarations() const
{
vector<Declaration const*> declarations;
declarations.reserve(m_magicVariables.size());
for (ASTPointer<Declaration const> const& variable: m_magicVariables)
declarations.push_back(variable.get());
return declarations;
}
MagicVariableDeclaration const* GlobalContext::currentThis() const
{
if (!m_thisPointer[m_currentContract])
m_thisPointer[m_currentContract] = make_shared<MagicVariableDeclaration>("this", TypeProvider::contract(*m_currentContract));
return m_thisPointer[m_currentContract].get();
}
MagicVariableDeclaration const* GlobalContext::currentSuper() const
{
if (!m_superPointer[m_currentContract])
m_superPointer[m_currentContract] = make_shared<MagicVariableDeclaration>("super", TypeProvider::contract(*m_currentContract, true));
return m_superPointer[m_currentContract].get();
}
}
}