mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
130 lines
3.9 KiB
C++
130 lines
3.9 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 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 <liblangutil/SourceReferenceFormatter.h>
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#include <liblangutil/Scanner.h>
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#include <liblangutil/Exceptions.h>
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using namespace std;
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using namespace dev;
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using namespace langutil;
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void SourceReferenceFormatter::printSourceLocation(SourceLocation const* _location)
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{
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if (!_location || !_location->source)
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return; // Nothing we can print here
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auto const& scanner = m_scannerFromSourceName(_location->source->name());
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int startLine;
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int startColumn;
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tie(startLine, startColumn) = scanner.translatePositionToLineColumn(_location->start);
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int endLine;
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int endColumn;
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tie(endLine, endColumn) = scanner.translatePositionToLineColumn(_location->end);
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if (startLine == endLine)
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{
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string line = scanner.lineAtPosition(_location->start);
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int locationLength = endColumn - startColumn;
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if (locationLength > 150)
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{
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line = line.substr(0, startColumn + 35) + " ... " + line.substr(endColumn - 35);
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endColumn = startColumn + 75;
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locationLength = 75;
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}
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if (line.length() > 150)
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{
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int len = line.length();
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line = line.substr(max(0, startColumn - 35), min(startColumn, 35) + min(locationLength + 35, len - startColumn));
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if (startColumn + locationLength + 35 < len)
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line += " ...";
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if (startColumn > 35)
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{
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line = " ... " + line;
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startColumn = 40;
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}
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endColumn = startColumn + locationLength;
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}
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m_stream << line << endl;
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for_each(
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line.cbegin(),
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line.cbegin() + startColumn,
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[this](char const& ch) { m_stream << (ch == '\t' ? '\t' : ' '); }
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);
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m_stream << "^";
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if (endColumn > startColumn + 2)
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m_stream << string(endColumn - startColumn - 2, '-');
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if (endColumn > startColumn + 1)
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m_stream << "^";
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m_stream << endl;
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}
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else
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m_stream <<
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scanner.lineAtPosition(_location->start) <<
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endl <<
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string(startColumn, ' ') <<
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"^ (Relevant source part starts here and spans across multiple lines)." <<
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endl;
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}
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void SourceReferenceFormatter::printSourceName(SourceLocation const* _location)
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{
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if (!_location || !_location->source)
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return; // Nothing we can print here
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auto const& scanner = m_scannerFromSourceName(_location->source->name());
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int startLine;
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int startColumn;
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tie(startLine, startColumn) = scanner.translatePositionToLineColumn(_location->start);
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m_stream << _location->source->name() << ":" << (startLine + 1) << ":" << (startColumn + 1) << ": ";
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}
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void SourceReferenceFormatter::printExceptionInformation(
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dev::Exception const& _exception,
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string const& _name
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)
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{
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SourceLocation const* location = boost::get_error_info<errinfo_sourceLocation>(_exception);
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auto secondarylocation = boost::get_error_info<errinfo_secondarySourceLocation>(_exception);
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printSourceName(location);
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m_stream << _name;
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if (string const* description = boost::get_error_info<errinfo_comment>(_exception))
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m_stream << ": " << *description << endl;
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else
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m_stream << endl;
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printSourceLocation(location);
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if (secondarylocation && !secondarylocation->infos.empty())
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{
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for (auto info: secondarylocation->infos)
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{
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printSourceName(&info.second);
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m_stream << info.first << endl;
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printSourceLocation(&info.second);
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}
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m_stream << endl;
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}
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}
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