mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
70 lines
2.4 KiB
C++
70 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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/** @file Assembly.h
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* @author Gav Wood <i@gavwood.com>
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* @date 2014
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*/
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#pragma once
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#include <libsolutil/Common.h>
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#include <libsolutil/FixedHash.h>
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namespace solidity::evmasm
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{
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/**
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* Binary object that potentially still needs to be linked (i.e. addresses of other contracts
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* need to be filled in).
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*/
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struct LinkerObject
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{
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/// The bytecode.
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bytes bytecode;
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/// Map from offsets in bytecode to library identifiers. The addresses starting at those offsets
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/// need to be replaced by the actual addresses by the linker.
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std::map<size_t, std::string> linkReferences;
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/// Map from hashes of the identifiers of immutable variables to the full identifier of the immutable and
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/// to a list of offsets into the bytecode that refer to their values.
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std::map<u256, std::pair<std::string, std::vector<size_t>>> immutableReferences;
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/// Appends the bytecode of @a _other and incorporates its link references.
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void append(LinkerObject const& _other);
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/// Links the given libraries by replacing their uses in the code and removes them from the references.
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void link(std::map<std::string, util::h160> const& _libraryAddresses);
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/// @returns a hex representation of the bytecode of the given object, replacing unlinked
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/// addresses by placeholders. This output is lowercase.
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std::string toHex() const;
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/// @returns a 36 character string that is used as a placeholder for the library
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/// address (enclosed by `__` on both sides). The placeholder is the hex representation
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/// of the first 18 bytes of the keccak-256 hash of @a _libraryName.
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static std::string libraryPlaceholder(std::string const& _libraryName);
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private:
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static util::h160 const* matchLibrary(
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std::string const& _linkRefName,
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std::map<std::string, util::h160> const& _libraryAddresses
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);
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};
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}
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