mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
97 lines
3.1 KiB
C++
97 lines
3.1 KiB
C++
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/*
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This file is part of cpp-ethereum.
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cpp-ethereum 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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cpp-ethereum 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 cpp-ethereum. 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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* Formatting functions for errors referencing positions and locations in the source.
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*/
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#include <libsolidity/SourceReferenceFormatter.h>
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#include <libsolidity/Scanner.h>
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#include <libsolidity/Exceptions.h>
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namespace dev
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{
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namespace solidity
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{
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void SourceReferenceFormatter::printSourceLocation(std::ostream& _stream,
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Location const& _location,
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Scanner const& _scanner)
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{
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int startLine;
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int startColumn;
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std::tie(startLine, startColumn) = _scanner.translatePositionToLineColumn(_location.start);
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_stream << "starting at line " << (startLine + 1) << ", column " << (startColumn + 1) << "\n";
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int endLine;
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int endColumn;
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std::tie(endLine, endColumn) = _scanner.translatePositionToLineColumn(_location.end);
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if (startLine == endLine)
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{
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_stream << _scanner.getLineAtPosition(_location.start) << "\n"
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<< std::string(startColumn, ' ') << "^";
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if (endColumn > startColumn + 2)
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_stream << std::string(endColumn - startColumn - 2, '-');
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if (endColumn > startColumn + 1)
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_stream << "^";
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_stream << "\n";
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}
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else
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_stream << _scanner.getLineAtPosition(_location.start) << "\n"
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<< std::string(startColumn, ' ') << "^\n"
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<< "Spanning multiple lines.\n";
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}
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void SourceReferenceFormatter::printSourcePosition(std::ostream& _stream,
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int _position,
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const Scanner& _scanner)
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{
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int line;
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int column;
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std::tie(line, column) = _scanner.translatePositionToLineColumn(_position);
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_stream << "at line " << (line + 1) << ", column " << (column + 1) << "\n"
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<< _scanner.getLineAtPosition(_position) << "\n"
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<< std::string(column, ' ') << "^" << std::endl;
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}
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void SourceReferenceFormatter::printExceptionInformation(std::ostream& _stream,
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Exception const& _exception,
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std::string const& _name,
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Scanner const& _scanner)
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{
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std::cerr << _name;
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std::string const* description = boost::get_error_info<errinfo_comment>(_exception);
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if (description != nullptr)
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std::cerr << ": " << *description;
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int const* position = boost::get_error_info<errinfo_sourcePosition>(_exception);
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if (position != nullptr)
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{
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std::cerr << " ";
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printSourcePosition(std::cerr, *position, _scanner);
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}
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Location const* location = boost::get_error_info<errinfo_sourceLocation>(_exception);
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if (location != nullptr)
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{
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std::cerr << " ";
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printSourceLocation(_stream, *location, _scanner);
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}
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}
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}
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}
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