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#include <string.h>
#include <bsd/sys/queue.h>
#include <glib.h>
#include <Scintilla.h>
#include "sciteco.h"
#include "undo.h"
UndoStack undo;
UndoToken::UndoToken() : pos(strlen(cmdline)) {}
void
UndoTokenMessage::run(void)
{
editor_msg(iMessage, wParam, lParam);
}
void
UndoStack::push_msg(unsigned int iMessage, uptr_t wParam, sptr_t lParam)
{
UndoToken *token = new UndoTokenMessage(iMessage, wParam, lParam);
SLIST_INSERT_HEAD(&head, token, tokens);
}
#if 0
template <typename Type>
void
UndoStack::push_var(Type &variable, Type value)
{
UndoToken *token = new UndoTokenVariable<Type>(variable, value);
SLIST_INSERT_HEAD(&head, token, tokens);
}
#endif
void
UndoStack::pop(gint pos)
{
while (!SLIST_EMPTY(&head) && SLIST_FIRST(&head)->pos >= pos) {
UndoToken *top = SLIST_FIRST(&head);
top->run();
SLIST_REMOVE_HEAD(&head, tokens);
delete top;
}
}
UndoStack::~UndoStack()
{
UndoToken *token, *next;
SLIST_FOREACH_SAFE(token, &head, tokens, next)
delete token;
}
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