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paranoid_visitor.h

Go to the documentation of this file.

// AUTOMATICALLY GENERATED -- DO NOT EDIT!         -*- c++ -*-

#ifndef paranoid_visitor_h
#define paranoid_visitor_h

#include "ptree_program_visitor.h"

//
// INTERFACE definition follows 
//

template<typename T>
class Paranoid_visitor : public Ptree_program_visitor<T> {
    typedef Ptree_program_visitor<T> Super;
 public:
    using Super::operator new;
    using Super::operator delete;

    Paranoid_visitor(Source* src)
        : Super(src), Ptree_visitor<T>(src) { }

public:  
  // FIXME: move this to Ptree_visitor?
  T visit_and_catch(Ptree* p);

private:  
  virtual T default_action(Ptree* p);
};

//
// IMPLEMENTATION includes follow (for use by inline functions)
//


#include <string>
#include <typeinfo>
#include "except.h"

//
// IMPLEMENTATION of function templates
//




template<typename T> T
Paranoid_visitor<T>::default_action(Ptree* p)
{
    if (p)
        bogus_ptree_error(std::string("Unexpected node type `") + typeid(*p).name() + "' encountered", p);
    else
        bogus_ptree_error("Unexpected empty node encountered", p);
    return T(0);                // silence compiler
}


// FIXME: move this to Ptree_visitor?

template<typename T> T
Paranoid_visitor<T>::visit_and_catch(Ptree* p)
{
    try {
        return visit(p);
    }
    catch(Compile_error& e) {
        e.print(std::cerr, p);
        return T(0);
    }
}

#endif // paranoid_visitor_h

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