public static Exp getInstance(Exp left, Exp right, char c)
{
Exp_Operator ope = Exp_Operator.PLUS;
switch (c)
{
case '+': ope = Exp_Operator.PLUS;
break;
case '-': ope = Exp_Operator.MINU;
break;
case '*': ope = Exp_Operator.MULT;
break;
case '/': ope = Exp_Operator.DIVI;
break;
case '<': ope = Exp_Operator.LESS_THAN;
break;
case '>': ope = Exp_Operator.GREATER_THAN;
break;
default:
LogWriter.WriteErrText("Unknown Two operator:" + c);
break;
}
return(getInstance(left, right, ope));
}
public static Exp getInstance(Exp expression, Exp_Operator ope)
{
Exp_One ret = new Exp_One();
ret.expression = expression;
ret.ope = ope;
return(simplify(ret));
}
public static Exp getInstance(Exp left, Exp right, char c1, char c2)
{
Exp_Operator ope = Exp_Operator.NONE;
switch (c1)
{
case '<':
if (c2 == '=')
{
ope = Exp_Operator.LESS_EQUAL_THAN;
}
else
{
ope = Exp_Operator.LESS_THAN;
}
break;
case '>':
if (c2 == '=')
{
ope = Exp_Operator.GREATER_EQUAL_THAN;
}
else
{
ope = Exp_Operator.GREATER_THAN;
}
break;
case '=':
if (c2 == '=')
{
ope = Exp_Operator.IF_EQUAL;
}
else
{
LogWriter.WriteLogText("Lex Error: expect if equal");
}
break;
case '!':
if (c2 == '=')
{
ope = Exp_Operator.NOT_EQUAL;
}
else
{
LogWriter.WriteLogText("Lex Error: expect if not equal");
}
break;
}
return(getInstance(left, right, ope));
}
public static Exp getInstance(Exp left, Exp right, Exp_Operator ope)
{
Exp_Two ret = new Exp_Two();
if (ope != Exp_Operator.EQUAL && ope != Exp_Operator.MINU && ope != Exp_Operator.DIVI)
{
ret.left = simplify(left);
ret.right = simplify(right);
}
else
{
ret.left = left;
ret.right = right;
}
ret.ope = ope;
return(simplify(ret));
}
