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author | chriseth <c@ethdev.com> | 2015-04-24 23:35:16 +0800 |
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committer | chriseth <c@ethdev.com> | 2015-04-30 17:42:02 +0800 |
commit | b9d7387e7abbb1f4fa7f7c32a3757386e75e5650 (patch) | |
tree | d64555fc0ef31be5d2a60a1fa1800bc79a346749 /SourceLocation.h | |
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Move assembly related files to libevmasm and Params.h/.cpp to libevmcore.
Diffstat (limited to 'SourceLocation.h')
-rw-r--r-- | SourceLocation.h | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/SourceLocation.h b/SourceLocation.h new file mode 100644 index 00000000..35e3c031 --- /dev/null +++ b/SourceLocation.h @@ -0,0 +1,89 @@ +/* + This file is part of cpp-ethereum. + + cpp-ethereum 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. + + cpp-ethereum 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 cpp-ethereum. If not, see <http://www.gnu.org/licenses/>. +*/ +/** + * @author Lefteris Karapetsas <lefteris@ethdev.com> + * @date 2015 + * Represents a location in a source file + */ + +#pragma once + +#include <memory> +#include <string> +#include <ostream> +#include <tuple> + +namespace dev +{ + +/** + * Representation of an interval of source positions. + * The interval includes start and excludes end. + */ +struct SourceLocation +{ + SourceLocation(int _start, int _end, std::shared_ptr<std::string const> _sourceName): + start(_start), end(_end), sourceName(_sourceName) { } + SourceLocation(): start(-1), end(-1) { } + + SourceLocation(SourceLocation const& _other): + start(_other.start), end(_other.end), sourceName(_other.sourceName) {} + SourceLocation& operator=(SourceLocation const& _other) { start = _other.start; end = _other.end; sourceName = _other.sourceName; return *this;} + + bool operator==(SourceLocation const& _other) const { return start == _other.start && end == _other.end;} + bool operator!=(SourceLocation const& _other) const { return !operator==(_other); } + inline bool operator<(SourceLocation const& _other) const; + inline bool contains(SourceLocation const& _other) const; + inline bool intersects(SourceLocation const& _other) const; + + bool isEmpty() const { return start == -1 && end == -1; } + + int start; + int end; + std::shared_ptr<std::string const> sourceName; +}; + +/// Stream output for Location (used e.g. in boost exceptions). +inline std::ostream& operator<<(std::ostream& _out, SourceLocation const& _location) +{ + if (_location.isEmpty()) + return _out << "NO_LOCATION_SPECIFIED"; + return _out << *_location.sourceName << "[" << _location.start << "," << _location.end << ")"; +} + +bool SourceLocation::operator<(SourceLocation const& _other) const +{ + if (!sourceName || !_other.sourceName) + return int(!!sourceName) < int(!!_other.sourceName); + return make_tuple(*sourceName, start, end) < make_tuple(*_other.sourceName, _other.start, _other.end); +} + +bool SourceLocation::contains(SourceLocation const& _other) const +{ + if (isEmpty() || _other.isEmpty() || !sourceName || !_other.sourceName || *sourceName != *_other.sourceName) + return false; + return start <= _other.start && _other.end <= end; +} + +bool SourceLocation::intersects(SourceLocation const& _other) const +{ + if (isEmpty() || _other.isEmpty() || !sourceName || !_other.sourceName || *sourceName != *_other.sourceName) + return false; + return _other.start < end && start < _other.end; +} + +} |