mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
147 lines
7.2 KiB
C++
147 lines
7.2 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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/**
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* @author Christian <c@ethdev.com>
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* @author Gav Wood <g@ethdev.com>
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* @date 2014
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* Container of the (implicit and explicit) global objects.
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*/
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#include <libsolidity/analysis/GlobalContext.h>
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#include <libsolidity/ast/AST.h>
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#include <libsolidity/ast/TypeProvider.h>
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#include <libsolidity/ast/Types.h>
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#include <memory>
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using namespace std;
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namespace solidity::frontend
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{
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/// Magic variables get negative ids for easy differentiation
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int magicVariableToID(std::string const& _name)
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{
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if (_name == "abi") return -1;
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else if (_name == "addmod") return -2;
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else if (_name == "assert") return -3;
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else if (_name == "block") return -4;
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else if (_name == "blockhash") return -5;
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else if (_name == "ecrecover") return -6;
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else if (_name == "gasleft") return -7;
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else if (_name == "keccak256") return -8;
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else if (_name == "log0") return -10;
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else if (_name == "log1") return -11;
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else if (_name == "log2") return -12;
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else if (_name == "log3") return -13;
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else if (_name == "log4") return -14;
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else if (_name == "msg") return -15;
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else if (_name == "mulmod") return -16;
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else if (_name == "now") return -17;
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else if (_name == "require") return -18;
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else if (_name == "revert") return -19;
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else if (_name == "ripemd160") return -20;
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else if (_name == "selfdestruct") return -21;
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else if (_name == "sha256") return -22;
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else if (_name == "sha3") return -23;
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else if (_name == "suicide") return -24;
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else if (_name == "super") return -25;
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else if (_name == "tx") return -26;
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else if (_name == "type") return -27;
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else if (_name == "this") return -28;
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else
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solAssert(false, "Unknown magic variable: \"" + _name + "\".");
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}
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inline vector<shared_ptr<MagicVariableDeclaration const>> constructMagicVariables()
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{
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static auto const magicVarDecl = [](string const& _name, Type const* _type) {
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return make_shared<MagicVariableDeclaration>(magicVariableToID(_name), _name, _type);
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};
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return {
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magicVarDecl("abi", TypeProvider::magic(MagicType::Kind::ABI)),
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magicVarDecl("addmod", TypeProvider::function(strings{"uint256", "uint256", "uint256"}, strings{"uint256"}, FunctionType::Kind::AddMod, false, StateMutability::Pure)),
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magicVarDecl("assert", TypeProvider::function(strings{"bool"}, strings{}, FunctionType::Kind::Assert, false, StateMutability::Pure)),
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magicVarDecl("block", TypeProvider::magic(MagicType::Kind::Block)),
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magicVarDecl("blockhash", TypeProvider::function(strings{"uint256"}, strings{"bytes32"}, FunctionType::Kind::BlockHash, false, StateMutability::View)),
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magicVarDecl("ecrecover", TypeProvider::function(strings{"bytes32", "uint8", "bytes32", "bytes32"}, strings{"address"}, FunctionType::Kind::ECRecover, false, StateMutability::Pure)),
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magicVarDecl("gasleft", TypeProvider::function(strings(), strings{"uint256"}, FunctionType::Kind::GasLeft, false, StateMutability::View)),
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magicVarDecl("keccak256", TypeProvider::function(strings{"bytes memory"}, strings{"bytes32"}, FunctionType::Kind::KECCAK256, false, StateMutability::Pure)),
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magicVarDecl("log0", TypeProvider::function(strings{"bytes32"}, strings{}, FunctionType::Kind::Log0)),
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magicVarDecl("log1", TypeProvider::function(strings{"bytes32", "bytes32"}, strings{}, FunctionType::Kind::Log1)),
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magicVarDecl("log2", TypeProvider::function(strings{"bytes32", "bytes32", "bytes32"}, strings{}, FunctionType::Kind::Log2)),
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magicVarDecl("log3", TypeProvider::function(strings{"bytes32", "bytes32", "bytes32", "bytes32"}, strings{}, FunctionType::Kind::Log3)),
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magicVarDecl("log4", TypeProvider::function(strings{"bytes32", "bytes32", "bytes32", "bytes32", "bytes32"}, strings{}, FunctionType::Kind::Log4)),
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magicVarDecl("msg", TypeProvider::magic(MagicType::Kind::Message)),
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magicVarDecl("mulmod", TypeProvider::function(strings{"uint256", "uint256", "uint256"}, strings{"uint256"}, FunctionType::Kind::MulMod, false, StateMutability::Pure)),
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magicVarDecl("now", TypeProvider::uint256()),
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magicVarDecl("require", TypeProvider::function(strings{"bool"}, strings{}, FunctionType::Kind::Require, false, StateMutability::Pure)),
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magicVarDecl("require", TypeProvider::function(strings{"bool", "string memory"}, strings{}, FunctionType::Kind::Require, false, StateMutability::Pure)),
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magicVarDecl("revert", TypeProvider::function(strings(), strings(), FunctionType::Kind::Revert, false, StateMutability::Pure)),
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magicVarDecl("revert", TypeProvider::function(strings{"string memory"}, strings(), FunctionType::Kind::Revert, false, StateMutability::Pure)),
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magicVarDecl("ripemd160", TypeProvider::function(strings{"bytes memory"}, strings{"bytes20"}, FunctionType::Kind::RIPEMD160, false, StateMutability::Pure)),
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magicVarDecl("selfdestruct", TypeProvider::function(strings{"address payable"}, strings{}, FunctionType::Kind::Selfdestruct)),
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magicVarDecl("sha256", TypeProvider::function(strings{"bytes memory"}, strings{"bytes32"}, FunctionType::Kind::SHA256, false, StateMutability::Pure)),
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magicVarDecl("sha3", TypeProvider::function(strings{"bytes memory"}, strings{"bytes32"}, FunctionType::Kind::KECCAK256, false, StateMutability::Pure)),
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magicVarDecl("suicide", TypeProvider::function(strings{"address payable"}, strings{}, FunctionType::Kind::Selfdestruct)),
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magicVarDecl("tx", TypeProvider::magic(MagicType::Kind::Transaction)),
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magicVarDecl("type", TypeProvider::function(
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strings{"address"} /* accepts any contract type, handled by the type checker */,
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strings{} /* returns a MagicType, handled by the type checker */,
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FunctionType::Kind::MetaType,
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false,
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StateMutability::Pure
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)),
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};
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}
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GlobalContext::GlobalContext(): m_magicVariables{constructMagicVariables()}
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{
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}
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void GlobalContext::setCurrentContract(ContractDefinition const& _contract)
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{
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m_currentContract = &_contract;
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}
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vector<Declaration const*> GlobalContext::declarations() const
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{
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vector<Declaration const*> declarations;
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declarations.reserve(m_magicVariables.size());
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for (ASTPointer<Declaration const> const& variable: m_magicVariables)
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declarations.push_back(variable.get());
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return declarations;
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}
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MagicVariableDeclaration const* GlobalContext::currentThis() const
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{
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if (!m_thisPointer[m_currentContract])
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m_thisPointer[m_currentContract] = make_shared<MagicVariableDeclaration>(magicVariableToID("this"), "this", TypeProvider::contract(*m_currentContract));
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return m_thisPointer[m_currentContract].get();
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}
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MagicVariableDeclaration const* GlobalContext::currentSuper() const
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{
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if (!m_superPointer[m_currentContract])
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m_superPointer[m_currentContract] = make_shared<MagicVariableDeclaration>(magicVariableToID("super"), "super", TypeProvider::contract(*m_currentContract, true));
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return m_superPointer[m_currentContract].get();
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}
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}
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