1 files changed, 126 insertions, 0 deletions
diff --git a/libsolidity/interface/SourceReferenceFormatter.cpp b/libsolidity/interface/SourceReferenceFormatter.cpp
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+++ b/libsolidity/interface/SourceReferenceFormatter.cpp
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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/interface/SourceReferenceFormatter.h>
+#include <libsolidity/interface/CompilerStack.h>
+#include <libsolidity/parsing/Scanner.h>
+#include <libsolidity/interface/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.lineAtPosition(_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.lineAtPosition(_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* scannerPtr = nullptr;
+
+	if (location)
+	{
+		scannerPtr = &_compiler.scanner(*location->sourceName);
+		printSourceName(_stream, *location, *scannerPtr);
+	}
+
+	_stream << _name;
+	if (string const* description = boost::get_error_info<errinfo_comment>(_exception))
+		_stream << ": " << *description << endl;
+
+	if (location)
+	{
+		scannerPtr = &_compiler.scanner(*location->sourceName);
+		printSourceLocation(_stream, *location, *scannerPtr);
+	}
+
+	if (secondarylocation && !secondarylocation->infos.empty())
+	{
+		for (auto info: secondarylocation->infos)
+		{
+			scannerPtr = &_compiler.scanner(*info.second.sourceName);
+			_stream << info.first << " ";
+			printSourceName(_stream, info.second, *scannerPtr);
+			_stream << endl;
+			printSourceLocation(_stream, info.second, *scannerPtr);
+		}
+		_stream << endl;
+	}
+}
+
+}
+}