Instruction AnalyseUnaryOperator(Tokenizer.Token[] tokens, int index, out int tokenCount)
{
InstructionUnaryOperator instructionUnaryOperator = new InstructionUnaryOperator();
tokenCount = 1;
int tc = 0;
instructionUnaryOperator.Path = AnalysePath(tokens, index + tokenCount, out tc);
tokenCount += tc;
if (tokens[index + tokenCount].TokenName == Tokenizer.TokenName.Increment)
{
instructionUnaryOperator.Type = InstructionUnaryOperator.OperatorType.Increment;
instructionUnaryOperator.VariableName = tokens[index].Value;
}
if (tokens[index + 1].TokenName == Tokenizer.TokenName.Decrement)
{
instructionUnaryOperator.Type = InstructionUnaryOperator.OperatorType.Decrement;
instructionUnaryOperator.VariableName = tokens[index].Value;
}
tokenCount += 2;
return(instructionUnaryOperator);
}
InstructionResult ExecuteInstructionUnaryOperator(Instruction instruction)
{
InstructionUnaryOperator instructionUnaryOperator = instruction as InstructionUnaryOperator;
Variable variable = GetVariableByName(instructionUnaryOperator.VariableName);
Value variableValue = GetVariableValue(variable);
variableValue = ResolvePath(variableValue, instructionUnaryOperator.Path);
switch (instructionUnaryOperator.Type)
{
case InstructionUnaryOperator.OperatorType.Increment:
variableValue.NumericValue++;
break;
case InstructionUnaryOperator.OperatorType.Decrement:
variableValue.NumericValue--;
break;
}
return(new InstructionResult());
}
