public static IExpression GetMarriedFemaleExpression()
{
IExpression julie = new TerminalExpression("Julie");
IExpression married = new TerminalExpression("Married");
return(new AndExpression(julie, married));
}
public static IExpression GetMaleExpression()
{
IExpression robert = new TerminalExpression("Robert");
IExpression john = new TerminalExpression("John");
return(new OrExpression(robert, john));
}
public void Build(string a_strExpression)
{
IExpression l_ixLeft, l_ixRight;
string[] l_strElements = a_strExpression.Split(new char[] { ' ' }, StringSplitOptions.RemoveEmptyEntries);
for (int i = 0; i < l_strElements.Length; i++)
{
if (l_strElements[i] == "+")
{
l_ixLeft = m_ixResult;
l_ixRight = new TerminalExpression(Convert.ToInt32(l_strElements[++i]));
m_ixResult = new AddExpression(l_ixLeft, l_ixRight);
}
else if (l_strElements[i] == "-")
{
l_ixLeft = m_ixResult;
l_ixRight = new TerminalExpression(Convert.ToInt32(l_strElements[++i]));
m_ixResult = new SubExpression(l_ixLeft, l_ixRight);
}
else
{
m_ixResult = new TerminalExpression(Convert.ToInt32(l_strElements[i]));
}
}
}
//Rule: Julie is a married women
public static Expression getMarriedWomanExpression()
{
Expression julie = new TerminalExpression("Julie");
Expression married = new TerminalExpression("Married");
return(new AndExpression(julie, married));
}
//规则：Julie 是一个已婚的女性
public static IExpression GetMarriedWomanExpression()
{
var julie = new TerminalExpression("Julie");
var married = new TerminalExpression("Married");
return(new AndExpression(julie, married));
}
