/// <summary>
/// 获取操作数
/// </summary>
private BitArray GetOperator(string expression)
{
Regex reg = new Regex(@"\(\S+\)");
Match match = reg.Match(expression);
string resultExpression = match.Value.Substring(1);
resultExpression = resultExpression.Substring(0, resultExpression.Length - 1);
return(ExpressionParser.ParseExpression(resultExpression));
}
public override BitArray Handle(string expression)
{
expression = expression.Trim();
// 左结合，因此先从最右开始
string op1 = expression.Substring(0, expression.LastIndexOf('+')).Trim();
string op2 = expression.Substring(expression.LastIndexOf('+') + 1).Trim();
// 将左边的表达式和右边的表达式交给解释器处理
BitArray result1 = ExpressionParser.ParseExpression(op1);
BitArray result2 = ExpressionParser.ParseExpression(op2);
return(result1.Xor(result2));
}
public override BitArray Handle(string expression)
{
expression = expression.Trim();
// 进行变量的绑定，因为变量可能是数组形式
string variableKey = expression.Substring(0, expression.IndexOf('=')).Trim();
variableKey = BindingVariable(variableKey);
// 进行赋值运算符右边表达式的计算
string variableValue = expression.Substring(expression.IndexOf('=') + 1).Trim();
BitArray result = ExpressionParser.ParseExpression(variableValue);
// 更新并返回变量的数值
Parser.VariableStorage.AddVariable(variableKey, result);
return(result);
}