#ifndef MSP_DATAFILE_PARSERMODE_H_
#define MSP_DATAFILE_PARSERMODE_H_
+#include <msp/core/noncopyable.h>
#include "statement.h"
namespace Msp {
/**
Base class for parse modes.
*/
-class ParserMode
+class ParserMode: private NonCopyable
{
protected:
Input ∈
ParserMode(Input &i, const std::string &s): in(i), src(s) { }
public:
- virtual ~ParserMode() { }
+ virtual ~ParserMode() = default;
virtual Statement parse() = 0;
virtual void process_control_statement(const Statement &) { }
- virtual const StatementKey *peek(unsigned) { return 0; }
+ virtual const StatementKey *peek(unsigned) { return nullptr; }
virtual bool parse_and_load(unsigned, Loader &, const LoaderAction &) { return false; }
};