Add exit operand

include/execute/state.hpp

@@ -13,6 +13,7 @@ namespace Execute
 		std::vector<InterruptFn> const interrupts;
 		std::vector<std::uint8_t> memory;
 		unsigned stackPointer;
+		bool terminated;
 
 		State(std::unordered_map<std::string, unsigned> const & labelStatementIndice, unsigned const memorySize);
 	};

include/interpret/statement.hpp

@@ -71,6 +71,11 @@ namespace Interpret
 		void Execute(Execute::Flags & flags, Execute::State & state, Execute::Registers & registers) override;
 	};
 
+	struct ExitProgramStatement : Statement
+	{
+		void Execute(Execute::Flags & flags, Execute::State & state, Execute::Registers & registers) override;
+	};
+
 	struct SetStatement : Statement
 	{
 		Value firstArgument;

include/token/operandtype.hpp

@@ -15,6 +15,7 @@ namespace Token
 		Jump,
 		CallFunction,
 		ReturnFromFunction,
+		ExitProgram,
 		LessThanInteger,
 		GreaterThanInteger,
 		EqualInteger,