mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
159 lines
4.1 KiB
C++
159 lines
4.1 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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* @date 2014
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* Public compiler API.
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*/
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#include <libsolc/libsolc.h>
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#include <libsolidity/interface/StandardCompiler.h>
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#include <libsolidity/interface/Version.h>
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#include <libyul/YulString.h>
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#include <libdevcore/Common.h>
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#include <libdevcore/JSON.h>
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#include <cstdlib>
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#include <list>
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#include <string>
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#include "license.h"
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using namespace std;
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using namespace dev;
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using namespace solidity;
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namespace
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{
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// The strings in this list must not be resized after they have been added here (via solidity_alloc()), because
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// this may potentially change the pointer that was passed to the caller from solidity_alloc().
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static list<string> solidityAllocations;
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/// Find the equivalent to @p _data in the list of allocations of solidity_alloc(),
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/// removes it from the list and returns its value.
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///
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/// If any invalid argument is being passed, it is considered a programming error
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/// on the caller-side and hence, will call abort() then.
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string takeOverAllocation(char const* _data)
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{
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for (auto iter = begin(solidityAllocations); iter != end(solidityAllocations); ++iter)
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if (iter->data() == _data)
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{
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string chunk = move(*iter);
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solidityAllocations.erase(iter);
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return chunk;
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}
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abort();
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}
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/// Resizes a std::string to the proper length based on the occurrence of a zero terminator.
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void truncateCString(string& _data)
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{
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size_t pos = _data.find('\0');
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if (pos != string::npos)
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_data.resize(pos);
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}
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ReadCallback::Callback wrapReadCallback(CStyleReadFileCallback _readCallback, void* _readContext)
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{
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ReadCallback::Callback readCallback;
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if (_readCallback)
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{
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readCallback = [=](string const& _kind, string const& _data)
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{
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char* contents_c = nullptr;
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char* error_c = nullptr;
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_readCallback(_readContext, _kind.data(), _data.data(), &contents_c, &error_c);
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ReadCallback::Result result;
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result.success = true;
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if (!contents_c && !error_c)
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{
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result.success = false;
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result.responseOrErrorMessage = "Callback not supported.";
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}
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if (contents_c)
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{
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result.success = true;
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result.responseOrErrorMessage = takeOverAllocation(contents_c);
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}
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if (error_c)
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{
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result.success = false;
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result.responseOrErrorMessage = takeOverAllocation(error_c);
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}
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truncateCString(result.responseOrErrorMessage);
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return result;
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};
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}
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return readCallback;
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}
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string compile(string _input, CStyleReadFileCallback _readCallback, void* _readContext)
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{
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StandardCompiler compiler(wrapReadCallback(_readCallback, _readContext));
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return compiler.compile(move(_input));
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}
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}
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extern "C"
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{
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extern char const* solidity_license() noexcept
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{
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static string fullLicenseText = otherLicenses + licenseText;
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return fullLicenseText.c_str();
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}
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extern char const* solidity_version() noexcept
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{
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return VersionString.c_str();
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}
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extern char* solidity_compile(char const* _input, CStyleReadFileCallback _readCallback, void* _readContext) noexcept
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{
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return solidityAllocations.emplace_back(compile(_input, _readCallback, _readContext)).data();
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}
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extern char* solidity_alloc(size_t _size) noexcept
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{
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try
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{
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return solidityAllocations.emplace_back(_size, '\0').data();
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}
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catch (...)
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{
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// most likely a std::bad_alloc(), if at all.
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return nullptr;
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}
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}
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extern void solidity_free(char* _data) noexcept
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{
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takeOverAllocation(_data);
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}
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extern void solidity_reset() noexcept
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{
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// This is called right before each compilation, but not at the end, so additional memory
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// can be freed here.
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yul::YulStringRepository::reset();
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solidityAllocations.clear();
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}
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}
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