1 files changed, 101 insertions, 0 deletions
diff --git a/logic/minecraft/Rule.h b/logic/minecraft/Rule.h
new file mode 100644
index 00000000..c8bf6eaa
--- /dev/null
+++ b/logic/minecraft/Rule.h
@@ -0,0 +1,101 @@
+/* Copyright 2013-2015 MultiMC Contributors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <QString>
+#include <QList>
+#include <QJsonObject>
+#include <memory>
+#include "OpSys.h"
+
+class Library;
+class Rule;
+
+enum RuleAction
+{
+	Allow,
+	Disallow,
+	Defer
+};
+
+QList<std::shared_ptr<Rule>> rulesFromJsonV4(const QJsonObject &objectWithRules);
+
+class Rule
+{
+protected:
+	RuleAction m_result;
+	virtual bool applies(const Library *parent) = 0;
+
+public:
+	Rule(RuleAction result) : m_result(result)
+	{
+	}
+	virtual ~Rule() {};
+	virtual QJsonObject toJson() = 0;
+	RuleAction apply(const Library *parent)
+	{
+		if (applies(parent))
+			return m_result;
+		else
+			return Defer;
+	}
+};
+
+class OsRule : public Rule
+{
+private:
+	// the OS
+	OpSys m_system;
+	// the OS version regexp
+	QString m_version_regexp;
+
+protected:
+	virtual bool applies(const Library *)
+	{
+		return (m_system == currentSystem);
+	}
+	OsRule(RuleAction result, OpSys system, QString version_regexp)
+		: Rule(result), m_system(system), m_version_regexp(version_regexp)
+	{
+	}
+
+public:
+	virtual QJsonObject toJson();
+	static std::shared_ptr<OsRule> create(RuleAction result, OpSys system,
+										  QString version_regexp)
+	{
+		return std::shared_ptr<OsRule>(new OsRule(result, system, version_regexp));
+	}
+};
+
+class ImplicitRule : public Rule
+{
+protected:
+	virtual bool applies(const Library *)
+	{
+		return true;
+	}
+	ImplicitRule(RuleAction result) : Rule(result)
+	{
+	}
+
+public:
+	virtual QJsonObject toJson();
+	static std::shared_ptr<ImplicitRule> create(RuleAction result)
+	{
+		return std::shared_ptr<ImplicitRule>(new ImplicitRule(result));
+	}
+};