void set_source(unsigned, unsigned);
virtual void visit(Block &);
void set_source(unsigned, unsigned);
virtual void visit(Block &);
virtual void visit(UnaryExpression &);
virtual void visit(BinaryExpression &);
virtual void visit(Assignment &);
virtual void visit(UnaryExpression &);
virtual void visit(BinaryExpression &);
virtual void visit(Assignment &);
virtual void visit(FunctionCall &);
virtual void visit(ExpressionStatement &);
virtual void visit(Import &);
virtual void visit(FunctionCall &);
virtual void visit(ExpressionStatement &);
virtual void visit(Import &);
virtual void visit(FunctionDeclaration &);
virtual void visit(Conditional &);
virtual void visit(Iteration &);
virtual void visit(FunctionDeclaration &);
virtual void visit(Conditional &);
virtual void visit(Iteration &);