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/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* 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
* of the License, 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
#include "glk/alan2/acode.h"
#include "glk/alan2/interpreter.h"
#include "glk/alan2/rules.h"
#include "glk/alan2/types.h"
#include "common/debug.h"
namespace Glk {
namespace Alan2 {
// TODO: Refactor these into debug flags
const bool trcflg = false;
const bool stpflg = false;
void Rules::parseRules() {
bool change = true;
int i;
for (i = 1; !endOfTable(&_ruls[i - 1]); i++)
_ruls[i - 1].run = false;
while (change) {
change = false;
for (i = 1; !endOfTable(&_ruls[i - 1]); i++) {
if (!_ruls[i - 1].run) {
if (trcflg) {
debug("\n<RULE %d (at ", i); // TODO: Debug output formatting?
//debugsay(cur.loc); // TODO
if (!stpflg)
debug("), Evaluating");
else
debug("), Evaluating:>\n");
}
_interpreter->interpret(_ruls[i - 1].exp);
if (_stack->pop()) {
change = true;
_ruls[i - 1].run = true;
if (trcflg) {
if (!stpflg) {
debug(", Executing:>\n");
} else {
debug("\nRULE %d (at ", i);
//debugsay(cur.loc); // TODO
debug("), Executing:>\n");
}
}
_interpreter->interpret(_ruls[i - 1].stms);
} else if (trcflg && !stpflg) {
debug(":>\n");
}
}
}
}
}
bool Rules::endOfTable(RulElem *addr) {
Aword *x = (Aword *)addr;
return *x == (Aword)EOF;
}
} // End of namespace Alan2
} // End of namespace Glk
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