Example #1
0
        public static void Emit(byte[] instruction, CompilationContext context)
        {
            // 20000000

            // Use the conditional begin instruction stored in the stack.
            instruction = context.CurrentBlock.BaseInstruction;
            CodeType codeType = InstructionHelper.GetCodeType(instruction);

            // Pop the current block of operations from the stack so control instructions
            // for the conditional can be emitted in the upper block.
            IEnumerable <IOperation> operations = context.CurrentOperations;

            context.BlockStack.Pop();

            ICondition condition;

            switch (codeType)
            {
            case CodeType.BeginMemoryConditionalBlock:
                condition = MemoryConditional.Emit(instruction, context);
                break;

            case CodeType.BeginKeypressConditionalBlock:
                condition = KeyPressConditional.Emit(instruction, context);
                break;

            case CodeType.BeginRegisterConditionalBlock:
                condition = RegisterConditional.Emit(instruction, context);
                break;

            default:
                throw new TamperCompilationException($"Conditional end does not match code type {codeType} in Atmosphere cheat");
            }

            // Create a conditional block with the current operations and nest it in the upper
            // block of the stack.

            IfBlock block = new IfBlock(condition, operations);

            context.CurrentOperations.Add(block);
        }
Example #2
0
        private static void Emit(byte[] instruction, CompilationContext context, IEnumerable <IOperation> operationsElse)
        {
            // 2X000000
            // X: End type (0 = End, 1 = Else).

            byte terminationType = instruction[TerminationTypeIndex];

            switch (terminationType)
            {
            case End:
                break;

            case Else:
                // Start a new operation block with the 'else' instruction to signal that there is the 'then' block just above it.
                context.BlockStack.Push(new OperationBlock(instruction));
                return;

            default:
                throw new TamperCompilationException($"Unknown conditional termination type {terminationType}");
            }

            // Use the conditional begin instruction stored in the stack.
            var      upperInstruction = context.CurrentBlock.BaseInstruction;
            CodeType codeType         = InstructionHelper.GetCodeType(upperInstruction);

            // Pop the current block of operations from the stack so control instructions
            // for the conditional can be emitted in the upper block.
            IEnumerable <IOperation> operations = context.CurrentOperations;

            context.BlockStack.Pop();

            // If the else operations are already set, then the upper block must not be another end.
            if (operationsElse != null && codeType == CodeType.EndConditionalBlock)
            {
                throw new TamperCompilationException($"Expected an upper 'if' conditional instead of 'end conditional'");
            }

            ICondition condition;

            switch (codeType)
            {
            case CodeType.BeginMemoryConditionalBlock:
                condition = MemoryConditional.Emit(upperInstruction, context);
                break;

            case CodeType.BeginKeypressConditionalBlock:
                condition = KeyPressConditional.Emit(upperInstruction, context);
                break;

            case CodeType.BeginRegisterConditionalBlock:
                condition = RegisterConditional.Emit(upperInstruction, context);
                break;

            case CodeType.EndConditionalBlock:
                terminationType = upperInstruction[TerminationTypeIndex];
                // If there is an end instruction above then it must be an else.
                if (terminationType != Else)
                {
                    throw new TamperCompilationException($"Expected an upper 'else' conditional instead of {terminationType}");
                }
                // Re-run the Emit with the else operations set.
                Emit(instruction, context, operations);
                return;

            default:
                throw new TamperCompilationException($"Conditional end does not match code type {codeType} in Atmosphere cheat");
            }

            // Create a conditional block with the current operations and nest it in the upper
            // block of the stack.

            IfBlock block = new IfBlock(condition, operations, operationsElse);

            context.CurrentOperations.Add(block);
        }