MUTATIONOFJB: Add support for labels and goto.

1 files changed, 78 insertions, 0 deletions

diff --git a/engines/mutationofjb/commands/labelcommand.cpp b/engines/mutationofjb/commands/labelcommand.cpp
new file mode 100644
index 0000000000..4540a83aa3
--- /dev/null
+++ b/engines/mutationofjb/commands/labelcommand.cpp
@@ -0,0 +1,78 @@
+/* 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 "mutationofjb/commands/labelcommand.h"
+#include "mutationofjb/commands/gotocommand.h"
+#include "mutationofjb/game.h"
+#include "mutationofjb/script.h"
+
+/*
+	<label> ":"
+
+	Creates a label.
+*/
+
+namespace MutationOfJB {
+
+bool LabelCommandParser::parse(const Common::String &line, ScriptParseContext &parseCtx, Command *&command) {
+	if (line.lastChar() != ':') {
+		return false;
+	}
+
+	Common::String label = line;
+	label.deleteLastChar();
+
+	LabelCommand *labelCmd = new LabelCommand(label);
+	if (!parseCtx._labels.contains(line)) {
+		parseCtx._labels[line] = labelCmd;
+	} else {
+		warning("Label '%s' already exists", label.c_str());
+	}
+
+	if (parseCtx._pendingGotos.contains(label)) {
+		GotoCommands &gotos = parseCtx._pendingGotos[label];
+		for (GotoCommands::const_iterator it = gotos.begin(); it != gotos.end(); ++it) {
+			(*it)->setLabelCommand(labelCmd);
+		}
+		gotos.clear();
+	}
+
+	command = labelCmd;
+	return true;
+}
+
+const Common::String &LabelCommand::getName() const
+{
+	return _name;
+}
+
+Command::ExecuteResult LabelCommand::execute(GameData &) {
+	// Intentionally empty.
+
+	return Finished;
+}
+
+Common::String LabelCommand::debugString() const {
+	return Common::String::format("LABEL %s", _name.c_str());
+}
+
+}