71 lines
1.6 KiB
C++
71 lines
1.6 KiB
C++
// Copyright (c) 1994 James Clark
|
|
// See the file COPYING for copying permission.
|
|
|
|
#ifndef Undo_INCLUDED
|
|
#define Undo_INCLUDED 1
|
|
#ifdef __GNUG__
|
|
#pragma interface
|
|
#endif
|
|
|
|
#include "Link.h"
|
|
#include "ContentToken.h"
|
|
#include "OpenElement.h"
|
|
#include "Allocator.h"
|
|
|
|
#ifdef SP_NAMESPACE
|
|
namespace SP_NAMESPACE {
|
|
#endif
|
|
|
|
class ParserState;
|
|
class Event;
|
|
|
|
class Undo : public Link {
|
|
public:
|
|
void *operator new(size_t sz, Allocator &alloc) { return alloc.alloc(sz); }
|
|
void *operator new(size_t sz) { return Allocator::allocSimple(sz); }
|
|
void operator delete(void *p) { Allocator::free(p); }
|
|
#ifdef SP_HAVE_PLACEMENT_OPERATOR_DELETE
|
|
void operator delete(void *p, Allocator &) { Allocator::free(p); }
|
|
#endif
|
|
Undo();
|
|
virtual ~Undo();
|
|
virtual void undo(ParserState *) = 0;
|
|
private:
|
|
Undo(const Undo &); // undefined
|
|
void operator=(const Undo &); // undefined
|
|
};
|
|
|
|
class UndoTransition : public Undo {
|
|
public:
|
|
UndoTransition(const MatchState &);
|
|
void undo(ParserState *);
|
|
private:
|
|
UndoTransition(const UndoTransition &); // undefined
|
|
void operator=(const UndoTransition &); // undefined
|
|
MatchState state_;
|
|
};
|
|
|
|
class UndoStartTag : public Undo {
|
|
public:
|
|
UndoStartTag();
|
|
void undo(ParserState *);
|
|
private:
|
|
UndoStartTag(const UndoStartTag &); // undefined
|
|
void operator=(const UndoStartTag &); // undefined
|
|
};
|
|
|
|
class UndoEndTag : public Undo {
|
|
public:
|
|
UndoEndTag(OpenElement *);
|
|
void undo(ParserState *);
|
|
private:
|
|
UndoEndTag(const UndoEndTag &); // undefined
|
|
void operator=(const UndoEndTag &); // undefined
|
|
Owner<OpenElement> element_;
|
|
};
|
|
|
|
#ifdef SP_NAMESPACE
|
|
}
|
|
#endif
|
|
|
|
#endif /* not Undo_INCLUDED */
|