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Diffstat (limited to 'libsolidity/SourceReferenceFormatter.cpp')
| -rw-r--r-- | libsolidity/SourceReferenceFormatter.cpp | 126 |
1 files changed, 126 insertions, 0 deletions
diff --git a/libsolidity/SourceReferenceFormatter.cpp b/libsolidity/SourceReferenceFormatter.cpp new file mode 100644 index 00000000..77805efc --- /dev/null +++ b/libsolidity/SourceReferenceFormatter.cpp @@ -0,0 +1,126 @@ +/* + 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/CompilerStack.h> +#include <libsolidity/Scanner.h> +#include <libsolidity/Exceptions.h> + +using namespace std; + +namespace dev +{ +namespace solidity +{ + +void SourceReferenceFormatter::printSourceLocation( + ostream& _stream, + SourceLocation const& _location, + Scanner const& _scanner +) +{ + int startLine; + int startColumn; + tie(startLine, startColumn) = _scanner.translatePositionToLineColumn(_location.start); + int endLine; + int endColumn; + tie(endLine, endColumn) = _scanner.translatePositionToLineColumn(_location.end); + if (startLine == endLine) + { + string line = _scanner.getLineAtPosition(_location.start); + _stream << line << endl; + for_each( + line.cbegin(), + line.cbegin() + startColumn, + [&_stream](char const& ch) { _stream << (ch == '\t' ? '\t' : ' '); } + ); + _stream << "^"; + if (endColumn > startColumn + 2) + _stream << string(endColumn - startColumn - 2, '-'); + if (endColumn > startColumn + 1) + _stream << "^"; + _stream << endl; + } + else + _stream << + _scanner.getLineAtPosition(_location.start) << + endl << + string(startColumn, ' ') << + "^\n" << + "Spanning multiple lines.\n"; +} + +void SourceReferenceFormatter::printSourceName( + ostream& _stream, + SourceLocation const& _location, + Scanner const& _scanner +) +{ + int startLine; + int startColumn; + tie(startLine, startColumn) = _scanner.translatePositionToLineColumn(_location.start); + _stream << *_location.sourceName << ":" << (startLine + 1) << ":" << (startColumn + 1) << ": "; +} + +void SourceReferenceFormatter::printExceptionInformation( + ostream& _stream, + Exception const& _exception, + string const& _name, + CompilerStack const& _compiler +) +{ + SourceLocation const* location = boost::get_error_info<errinfo_sourceLocation>(_exception); + auto secondarylocation = boost::get_error_info<errinfo_secondarySourceLocation>(_exception); + Scanner const* scanner = nullptr; + + if (location) + { + scanner = &_compiler.getScanner(*location->sourceName); + printSourceName(_stream, *location, *scanner); + } + + _stream << _name; + if (string const* description = boost::get_error_info<errinfo_comment>(_exception)) + _stream << ": " << *description << endl; + + if (location) + { + scanner = &_compiler.getScanner(*location->sourceName); + printSourceLocation(_stream, *location, *scanner); + } + + if (secondarylocation && !secondarylocation->infos.empty()) + { + for (auto info: secondarylocation->infos) + { + scanner = &_compiler.getScanner(*info.second.sourceName); + _stream << info.first << " "; + printSourceName(_stream, info.second, *scanner); + _stream << endl; + printSourceLocation(_stream, info.second, *scanner); + } + _stream << endl; + } +} + +} +} |