mirror of
https://github.com/ethereum/solidity
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32ba5f5ae7
The actual SourceLocation on an ASTNode is representing the whole ASTNode whereas in an LSP (for example) you are also interested in the SourceLocation of a name of a construct (e.g. variable decarlation, function definition, ...). This also properly encodes non-existend sources as `-1` in the JSON output (eliminating the use of `numeric_limits<size_t>::max()`).
57 lines
1.8 KiB
C++
57 lines
1.8 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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// SPDX-License-Identifier: GPL-3.0
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#include <liblangutil/Exceptions.h>
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#include <boost/algorithm/string/split.hpp>
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#include <boost/algorithm/string.hpp>
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using namespace solidity;
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namespace solidity::langutil
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{
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SourceLocation const parseSourceLocation(std::string const& _input, std::string const& _sourceName, size_t _maxIndex)
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{
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// Expected input: "start:length:sourceindex"
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enum SrcElem : size_t { Start, Length, Index };
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std::vector<std::string> pos;
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boost::algorithm::split(pos, _input, boost::is_any_of(":"));
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solAssert(pos.size() == 3, "SourceLocation string must have 3 colon separated numeric fields.");
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auto const sourceIndex = stoi(pos[Index]);
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astAssert(
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sourceIndex == -1 || _maxIndex >= static_cast<size_t>(sourceIndex),
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"'src'-field ill-formatted or src-index too high"
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);
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int start = stoi(pos[Start]);
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int end = start + stoi(pos[Length]);
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// ASSUMPTION: only the name of source is used from here on, the m_source of the CharStream-Object can be empty
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std::shared_ptr<langutil::CharStream> source;
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if (sourceIndex != -1)
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source = std::make_shared<langutil::CharStream>("", _sourceName);
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return SourceLocation{start, end, source};
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}
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}
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