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/*-------------------------------------------------------------------------
Compiler Generator Coco/R,
Copyright (c) 1990, 2004 Hanspeter Moessenboeck, University of Linz
extended by M. Loeberbauer & A. Woess, Univ. of Linz
ported to C++ by Csaba Balazs, University of Szeged
with improvements by Pat Terry, Rhodes University
This program is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
Free Software Foundation; either version 2, or (at your option) any
later version.
This program is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
As an exception, it is allowed to write an extension of Coco/R that is
used as a plugin in non-free software.
If not otherwise stated, any source code generated by Coco/R (other than
Coco/R itself) does not fall under the GNU General Public License.
-------------------------------------------------------------------------*/
#include "Action.h"
#include "Target.h"
#include "CharSet.h"
namespace Coco {
Action::Action(int typ, int sym, int tc) {
this->target = NULL;
this->next = NULL;
this->typ = typ; this->sym = sym; this->tc = tc;
}
void Action::AddTarget(Target *t) { // add t to the action.targets
Target *last = NULL;
Target *p = target;
while (p != NULL && t->state->nr >= p->state->nr) {
if (t->state == p->state) return;
last = p; p = p->next;
}
t->next = p;
if (p == target) target = t; else last->next = t;
}
void Action::AddTargets(Action *a) {// add copy of a.targets to action.targets
for (Target *p = a->target; p != NULL; p = p->next) {
Target *t = new Target(p->state);
AddTarget(t);
}
if (a->tc == Node::contextTrans) tc = Node::contextTrans;
}
CharSet* Action::Symbols(Tab *tab) {
CharSet *s;
if (typ == Node::clas)
s = tab->CharClassSet(sym)->Clone();
else {
s = new CharSet(); s->Set(sym);
}
return s;
}
void Action::ShiftWith(CharSet *s, Tab *tab) {
if (s->Elements() == 1) {
typ = Node::chr; sym = s->First();
} else {
CharClass *c = tab->FindCharClass(s);
if (c == NULL) c = tab->NewCharClass(L"#", s); // class with dummy name
typ = Node::clas; sym = c->n;
}
}
}; // namespace
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