1 files changed, 104 insertions, 0 deletions
diff --git a/src/main/java/gregtech/api/interfaces/ICondition.java b/src/main/java/gregtech/api/interfaces/ICondition.java
new file mode 100644
index 0000000000..507315ee91
--- /dev/null
+++ b/src/main/java/gregtech/api/interfaces/ICondition.java
@@ -0,0 +1,104 @@
+package gregtech.api.interfaces;
+
+public interface ICondition<O> {
+	public boolean isTrue(O aObject);
+	
+	// Utility Classes for adding relations between Conditions.
+	
+	public static class Not<O> implements ICondition<O> {
+		private final ICondition<O> mCondition;
+		
+		public Not(ICondition<O> aCondition) {
+			mCondition = aCondition;
+		}
+		
+		@Override
+		public boolean isTrue(O aObject) {
+			return !mCondition.isTrue(aObject);
+		}
+	}
+	
+	public static class Or<O> implements ICondition<O> {
+		private final ICondition<O>[] mConditions;
+		
+		public Or(ICondition<O>... aConditions) {
+			mConditions = aConditions;
+		}
+		
+		@Override
+		public boolean isTrue(O aObject) {
+			for (ICondition<O> tCondition : mConditions) if (tCondition.isTrue(aObject)) return true;
+			return false;
+		}
+	}
+	
+	public static class Nor<O> implements ICondition<O> {
+		private final ICondition<O>[] mConditions;
+		
+		public Nor(ICondition<O>... aConditions) {
+			mConditions = aConditions;
+		}
+		
+		@Override
+		public boolean isTrue(O aObject) {
+			for (ICondition<O> tCondition : mConditions) if (tCondition.isTrue(aObject)) return false;
+			return true;
+		}
+	}
+	
+	public static class And<O> implements ICondition<O> {
+		private final ICondition<O>[] mConditions;
+		
+		public And(ICondition<O>... aConditions) {
+			mConditions = aConditions;
+		}
+		
+		@Override
+		public boolean isTrue(O aObject) {
+			for (ICondition<O> tCondition : mConditions) if (!tCondition.isTrue(aObject)) return false;
+			return true;
+		}
+	}
+	
+	public static class Nand<O> implements ICondition<O> {
+		private final ICondition<O>[] mConditions;
+		
+		public Nand(ICondition<O>... aConditions) {
+			mConditions = aConditions;
+		}
+		
+		@Override
+		public boolean isTrue(O aObject) {
+			for (ICondition<O> tCondition : mConditions) if (!tCondition.isTrue(aObject)) return true;
+			return false;
+		}
+	}
+	
+	public static class Xor<O> implements ICondition<O> {
+		private final ICondition<O> mCondition1, mCondition2;
+		
+		public Xor(ICondition<O> aCondition1, ICondition<O> aCondition2) {
+			mCondition1 = aCondition1;
+			mCondition2 = aCondition2;
+		}
+		
+		@Override
+		public boolean isTrue(O aObject) {
+			return mCondition1.isTrue(aObject) != mCondition2.isTrue(aObject);
+		}
+	}
+	
+	public static class Equal<O> implements ICondition<O> {
+		private final ICondition<O> mCondition1, mCondition2;
+		
+		public Equal(ICondition<O> aCondition1, ICondition<O> aCondition2) {
+			mCondition1 = aCondition1;
+			mCondition2 = aCondition2;
+		}
+		
+		@Override
+		public boolean isTrue(O aObject) {
+			return mCondition1.isTrue(aObject) == mCondition2.isTrue(aObject);
+		}
+	}
+}
+\ No newline at end of file