solidity/libsolidity/lsp/Utils.cpp
2022-05-09 11:37:11 +02:00

130 lines
3.7 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/>.
*/
// SPDX-License-Identifier: GPL-3.0
#include <liblangutil/CharStreamProvider.h>
#include <liblangutil/Exceptions.h>
#include <libsolidity/ast/AST.h>
#include <libsolidity/lsp/FileRepository.h>
#include <libsolidity/lsp/Utils.h>
#include <regex>
#include <fstream>
namespace solidity::lsp
{
using namespace frontend;
using namespace langutil;
using namespace std;
optional<LineColumn> parseLineColumn(Json::Value const& _lineColumn)
{
if (_lineColumn.isObject() && _lineColumn["line"].isInt() && _lineColumn["character"].isInt())
return LineColumn{_lineColumn["line"].asInt(), _lineColumn["character"].asInt()};
else
return nullopt;
}
Json::Value toJson(LineColumn const& _pos)
{
Json::Value json = Json::objectValue;
json["line"] = max(_pos.line, 0);
json["character"] = max(_pos.column, 0);
return json;
}
Json::Value toJsonRange(LineColumn const& _start, LineColumn const& _end)
{
Json::Value json;
json["start"] = toJson(_start);
json["end"] = toJson(_end);
return json;
}
Declaration const* referencedDeclaration(Expression const* _expression)
{
if (auto const* identifier = dynamic_cast<Identifier const*>(_expression))
if (Declaration const* referencedDeclaration = identifier->annotation().referencedDeclaration)
return referencedDeclaration;
if (auto const* memberAccess = dynamic_cast<MemberAccess const*>(_expression))
if (memberAccess->annotation().referencedDeclaration)
return memberAccess->annotation().referencedDeclaration;
return nullptr;
}
optional<SourceLocation> declarationLocation(Declaration const* _declaration)
{
if (!_declaration)
return nullopt;
if (_declaration->nameLocation().isValid())
return _declaration->nameLocation();
if (_declaration->location().isValid())
return _declaration->location();
return nullopt;
}
optional<SourceLocation> parsePosition(
FileRepository const& _fileRepository,
string const& _sourceUnitName,
Json::Value const& _position
)
{
if (!_fileRepository.sourceUnits().count(_sourceUnitName))
return nullopt;
if (optional<LineColumn> lineColumn = parseLineColumn(_position))
if (optional<int> const offset = CharStream::translateLineColumnToPosition(
_fileRepository.sourceUnits().at(_sourceUnitName),
*lineColumn
))
return SourceLocation{*offset, *offset, make_shared<string>(_sourceUnitName)};
return nullopt;
}
optional<SourceLocation> parseRange(FileRepository const& _fileRepository, string const& _sourceUnitName, Json::Value const& _range)
{
if (!_range.isObject())
return nullopt;
optional<SourceLocation> start = parsePosition(_fileRepository, _sourceUnitName, _range["start"]);
optional<SourceLocation> end = parsePosition(_fileRepository, _sourceUnitName, _range["end"]);
if (!start || !end)
return nullopt;
solAssert(*start->sourceName == *end->sourceName);
start->end = end->end;
return start;
}
string stripFileUriSchemePrefix(string const& _path)
{
regex const windowsDriveLetterPath("^file:///[a-zA-Z]:/");
if (regex_search(_path, windowsDriveLetterPath))
return _path.substr(8);
if (_path.find("file://") == 0)
return _path.substr(7);
else
return _path;
}
}