Added a utility method to search by line/column.

src/libs/cplusplus/ASTPath.cpp

@@ -40,6 +40,7 @@ using namespace CPlusPlus;
 
 QList<AST *> ASTPath::operator()(int line, int column)
 {
+    qDebug()<<"path @" << line << column;
     _nodes.clear();
     _line = line + 1;
     _column = column + 1;

src/libs/cplusplus/ASTPath.h

@@ -53,6 +53,7 @@ public:
     QList<AST *> operator()(const QTextCursor &cursor)
     { return this->operator()(cursor.blockNumber(), cursor.columnNumber()); }
 
+    /// line and column are 0-based!
     QList<AST *> operator()(int line, int column);
 
 #ifdef DEBUG_AST_PATH