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