Merge pull request #1824 from LianaHus/sol_ConverterFunctionForMix

Interface function for SourceLocation/position convertion

libsolidity/CompilerStack.cpp

@@ -257,6 +257,18 @@ bytes CompilerStack::staticCompile(std::string const& _sourceCode, bool _optimiz
 	return stack.compile(_sourceCode, _optimize);
 }
 
+tuple<int, int, int, int> CompilerStack::positionFromSourceLocation(SourceLocation const& _sourceLocation) const
+{
+	int startLine;
+	int startColumn;
+	int endLine;
+	int endColumn;
+	tie(startLine, startColumn) = getScanner(*_sourceLocation.sourceName).translatePositionToLineColumn(_sourceLocation.start);
+	tie(endLine, endColumn) = getScanner(*_sourceLocation.sourceName).translatePositionToLineColumn(_sourceLocation.end);
+
+	return make_tuple(++startLine, ++startColumn, ++endLine, ++endColumn);
+}
+
 void CompilerStack::reset(bool _keepSources)
 {
 	m_parseSuccessful = false;

libsolidity/CompilerStack.h

@@ -31,6 +31,7 @@
 #include <json/json.h>
 #include <libdevcore/Common.h>
 #include <libdevcore/FixedHash.h>
+#include <libevmasm/SourceLocation.h>
 
 namespace dev
 {
@@ -131,6 +132,11 @@ public:
 	/// scanning the source code - this is useful for printing exception information.
 	static bytes staticCompile(std::string const& _sourceCode, bool _optimize = false);
 
+	/// Helper function for logs printing. Do only use in error cases, it's quite expensive.
+	/// line and columns are numbered starting from 1 with following order:
+	/// start line, start column, end line, end column
+	std::tuple<int, int, int, int> positionFromSourceLocation(SourceLocation const& _sourceLocation) const;
+
 private:
 	/**
 	 * Information pertaining to one source unit, filled gradually during parsing and compilation.