mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
d67322a186
Also:
- Use {}-style list initialisation for SourceLocation construction
- Introduce new system includes
- Changes the API of the Scanner to take source as value (with move) as opposed to as a reference
106 lines
3.5 KiB
C++
106 lines
3.5 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 Lefteris Karapetsas <lefteris@ethdev.com>
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* @date 2015
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* Represents a location in a source file
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*/
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#pragma once
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#include <libdevcore/Common.h> // defines noexcept macro for MSVC
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#include <memory>
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#include <string>
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#include <ostream>
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#include <tuple>
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namespace langutil
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{
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/**
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* Representation of an interval of source positions.
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* The interval includes start and excludes end.
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*/
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struct SourceLocation
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{
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SourceLocation(): start(-1), end(-1) { }
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SourceLocation(int _start, int _end, std::shared_ptr<std::string const> _sourceName):
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start(_start), end(_end), sourceName(_sourceName) { }
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SourceLocation(SourceLocation&& _other) noexcept:
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start(_other.start),
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end(_other.end),
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sourceName(std::move(_other.sourceName))
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{}
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SourceLocation(SourceLocation const&) = default;
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SourceLocation& operator=(SourceLocation const&) = default;
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SourceLocation& operator=(SourceLocation&& _other) noexcept
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{
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start = _other.start;
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end = _other.end;
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sourceName = std::move(_other.sourceName);
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return *this;
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}
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bool operator==(SourceLocation const& _other) const
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{
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return start == _other.start && end == _other.end &&
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((!sourceName && !_other.sourceName) || (sourceName && _other.sourceName && *sourceName == *_other.sourceName));
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}
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bool operator!=(SourceLocation const& _other) const { return !operator==(_other); }
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inline bool operator<(SourceLocation const& _other) const;
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inline bool contains(SourceLocation const& _other) const;
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inline bool intersects(SourceLocation const& _other) const;
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bool isEmpty() const { return start == -1 && end == -1; }
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int start;
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int end;
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std::shared_ptr<std::string const> sourceName;
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};
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/// Stream output for Location (used e.g. in boost exceptions).
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inline std::ostream& operator<<(std::ostream& _out, SourceLocation const& _location)
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{
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if (_location.isEmpty())
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return _out << "NO_LOCATION_SPECIFIED";
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return _out << *_location.sourceName << "[" << _location.start << "," << _location.end << ")";
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}
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bool SourceLocation::operator<(SourceLocation const& _other) const
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{
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if (!sourceName || !_other.sourceName)
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return std::make_tuple(int(!!sourceName), start, end) < std::make_tuple(int(!!_other.sourceName), _other.start, _other.end);
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else
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return std::make_tuple(*sourceName, start, end) < std::make_tuple(*_other.sourceName, _other.start, _other.end);
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}
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bool SourceLocation::contains(SourceLocation const& _other) const
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{
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if (isEmpty() || _other.isEmpty() || ((!sourceName || !_other.sourceName || *sourceName != *_other.sourceName) && (sourceName || _other.sourceName)))
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return false;
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return start <= _other.start && _other.end <= end;
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}
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bool SourceLocation::intersects(SourceLocation const& _other) const
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{
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if (isEmpty() || _other.isEmpty() || ((!sourceName || !_other.sourceName || *sourceName != *_other.sourceName) && (sourceName || _other.sourceName)))
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return false;
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return _other.start < end && start < _other.end;
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}
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}
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