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/*
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 Christian <c@ethdev.com>
* @date 2014
* Formatting functions for errors referencing positions and locations in the source.
*/
#include <libsolidity/SourceReferenceFormatter.h>
#include <libsolidity/Scanner.h>
#include <libsolidity/Exceptions.h>
namespace dev
{
namespace solidity
{
void SourceReferenceFormatter::printSourceLocation(std::ostream& _stream,
Location const& _location,
Scanner const& _scanner)
{
int startLine;
int startColumn;
std::tie(startLine, startColumn) = _scanner.translatePositionToLineColumn(_location.start);
_stream << "starting at line " << (startLine + 1) << ", column " << (startColumn + 1) << "\n";
int endLine;
int endColumn;
std::tie(endLine, endColumn) = _scanner.translatePositionToLineColumn(_location.end);
if (startLine == endLine)
{
_stream << _scanner.getLineAtPosition(_location.start) << std::endl
<< std::string(startColumn, ' ') << "^";
if (endColumn > startColumn + 2)
_stream << std::string(endColumn - startColumn - 2, '-');
if (endColumn > startColumn + 1)
_stream << "^";
_stream << std::endl;
}
else
_stream << _scanner.getLineAtPosition(_location.start) << std::endl
<< std::string(startColumn, ' ') << "^\n"
<< "Spanning multiple lines.\n";
}
void SourceReferenceFormatter::printSourcePosition(std::ostream& _stream,
int _position,
const Scanner& _scanner)
{
int line;
int column;
std::tie(line, column) = _scanner.translatePositionToLineColumn(_position);
_stream << "at line " << (line + 1) << ", column " << (column + 1) << std::endl
<< _scanner.getLineAtPosition(_position) << std::endl
<< std::string(column, ' ') << "^" << std::endl;
}
void SourceReferenceFormatter::printExceptionInformation(std::ostream& _stream,
Exception const& _exception,
std::string const& _name,
Scanner const& _scanner)
{
_stream << _name;
if (std::string const* description = boost::get_error_info<errinfo_comment>(_exception))
_stream << ": " << *description;
if (int const* position = boost::get_error_info<errinfo_sourcePosition>(_exception))
{
_stream << " ";
printSourcePosition(_stream, *position, _scanner);
}
if (Location const* location = boost::get_error_info<errinfo_sourceLocation>(_exception))
{
_stream << " ";
printSourceLocation(_stream, *location, _scanner);
}
}
}
}
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