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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 "script.h"
#include "common/hashmap.h"
#include "common/hash-str.h"
#include "common/stream.h"
#include "common/debug.h"
#include "mutationofjb/commands/command.h"
#include "mutationofjb/commands/ifcommand.h"
#include "mutationofjb/commands/endblockcommand.h"
#include "mutationofjb/commands/changecommand.h"
namespace MutationOfJB {
static CommandParser** getParsers() {
static CommandParser* parsers[] = {
new IfCommandParser,
new EndBlockCommandParser,
new ChangeDoorCommandParser,
new ChangeObjectCommandParser,
new ChangeStaticCommandParser,
nullptr
};
return parsers;
}
ScriptParseContext::ScriptParseContext(Common::SeekableReadStream &stream) :
_stream(stream),
_currentCommand(nullptr),
_lastCommand(nullptr)
{}
bool ScriptParseContext::readLine(Common::String &line) {
do {
Common::String str = _stream.readLine();
if (str.empty())
continue;
if (str[0] != '.') {
line = str;
if (line[0] == '*') {
line.deleteChar(0);
}
return true;
}
} while(_stream.eos());
return false;
}
void ScriptParseContext::addConditionalCommand(ConditionalCommand *command, char tag) {
ConditionalCommandInfo cmi = {command, tag};
_pendingCondCommands.push_back(cmi);
}
bool Script::loadFromStream(Common::SeekableReadStream &stream) {
destroy();
CommandParser **parsers = getParsers();
ScriptParseContext parseCtx(stream);
Common::String line;
Command *lastCmd = nullptr;
CommandParser *lastParser = nullptr;
while (parseCtx.readLine(line)) {
Command *currentCmd = nullptr;
CommandParser *currentParser = nullptr;
for (CommandParser **parser = parsers; *parser; ++parser) {
if ((*parser)->parse(line, parseCtx, currentCmd)) {
currentParser = *parser;
break;
}
}
if (lastParser) {
lastParser->transition(parseCtx, lastCmd, currentCmd);
}
if (currentCmd) {
_allCommands.push_back(currentCmd);
}
lastCmd = currentCmd;
lastParser = currentParser;
}
Common::HashMap<Common::String, Command *> macros;
Common::HashMap<Common::String, Command *> labels;
return true;
}
void Script::destroy() {
for (Commands::iterator it = _allCommands.begin(); it != _allCommands.end(); ++it) {
delete *it;
}
_allCommands.clear();
}
Script::~Script() {
destroy();
}
}
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