I got this code for Semanitic Analysis. Can't figure out the code for Symbol Table to make it run? Making a 2D array like this :
String[,] Symboltable = new String[20, 6];
Gives error of wrong number of indices inside, which I resolved but still wouldn't work. What is the other way I could do this?
Region Semantic Analyzer
void Semantic_Analysis(int k)
{
Regex variable_Reg = new Regex(@"^[A-Za-z|_][A-Za-z|0-9]*$");
if (finalArray[k].Equals("+"))
{
if (variable_Reg.Match(finalArray[k - 1] + "").Success && variable_Reg.Match(finalArray[k + 1] + "").Success)
{
String type = finalArray[k - 4] + "";
String left_side = finalArray[k - 3] + "";
int left_side_i = 0;
int left_side_j = 0;
String before = finalArray[k - 1] + "";
int before_i = 0;
int before_j = 0;
String after = finalArray[k + 1] + "";
int after_i = 0;
int after_j = 0;
for (int i = 0; i < Symboltable.Count; i++)
{
for (int j = 0; j < Symboltable[i].Count; j++)
{
if (Symboltable[i][j].Equals(left_side))
{ left_side_i = i; left_side_j = j; }
if (Symboltable[i][j].Equals(before))
{ before_i = i; before_j = j; }
if (Symboltable[i][j].Equals(after))
{ after_i = i; after_j = j; }
}
}
if (type.Equals(Symboltable[before_i][2]) && type.Equals(Symboltable[after_i][2]) && Symboltable[before_i][2].Equals(Symboltable[after_i][2]))
{
int Ans = Convert.ToInt32(Symboltable[before_i][3]) + Convert.ToInt32(Symboltable[after_i][3]);
Constants.Add(Ans);
}
if (Symboltable[left_side_i][2].Equals(Symboltable[before_i][2]) && Symboltable[left_side_i][2].Equals(Symboltable[after_i][2]) && Symboltable[before_i][2].Equals(Symboltable[after_i][2]))
{
int Ans = Convert.ToInt32(Symboltable[before_i][3]) + Convert.ToInt32(Symboltable[after_i][3]);
Constants.RemoveAt(Constants.Count - 1);
Constants.Add(Ans);
Symboltable[left_side_i][3] = Ans + "";
}
}
}
if (finalArray[k].Equals("-"))
{
if (variable_Reg.Match(finalArray[k - 1] + "").Success && variable_Reg.Match(finalArray[k + 1] + "").Success)
{
String type = finalArray[k - 4] + "";
String left_side = finalArray[k - 3] + "";
int left_side_i = 0;
int left_side_j = 0;
String before = finalArray[k - 1] + "";
int before_i = 0;
int before_j = 0;
String after = finalArray[k + 1] + "";
int after_i = 0;
int after_j = 0;
for (int i = 0; i < Symboltable.Count; i++)
{
for (int j = 0; j < Symboltable[i].Count; j++)
{
if (Symboltable[i][j].Equals(left_side))
{ left_side_i = i; left_side_j = j; }
if (Symboltable[i][j].Equals(before))
{ before_i = i; before_j = j; }
if (Symboltable[i][j].Equals(after))
{ after_i = i; after_j = j; }
}
}
if (type.Equals(Symboltable[before_i][2]) && type.Equals(Symboltable[after_i][2]) && Symboltable[before_i][2].Equals(Symboltable[after_i][2]))
{
int Ans = Convert.ToInt32(Symboltable[before_i][3]) - Convert.ToInt32(Symboltable[after_i][3]);
Constants.Add(Ans);
}
if (Symboltable[left_side_i][2].Equals(Symboltable[before_i][2]) && Symboltable[left_side_i][2].Equals(Symboltable[after_i][2]) && Symboltable[before_i][2].Equals(Symboltable[after_i][2]))
{
int Ans = Convert.ToInt32(Symboltable[before_i][3]) + Convert.ToInt32(Symboltable[after_i][3]);
Constants.RemoveAt(Constants.Count - 1);
Constants.Add(Ans);
Symboltable[left_side_i][3] = Ans + "";
}
}
}
if (finalArray[k].Equals(">"))
{
if (variable_Reg.Match(finalArray[k - 1] + "").Success && variable_Reg.Match(finalArray[k + 1] + "").Success)
{
String before = finalArray[k - 1] + "";
int before_i = 0;
int before_j = 0;
String after = finalArray[k + 1] + "";
int after_i = 0;
int after_j = 0;
for (int i = 0; i < Symboltable.Count; i++)
{
for (int j = 0; j < Symboltable[i].Count; j++)
{
if (Symboltable[i][j].Equals(before))
{ before_i = i; before_j = j; }
if (Symboltable[i][j].Equals(after))
{ after_i = i; after_j = j; }
}
}
if (Convert.ToInt32(Symboltable[before_i][3]) > Convert.ToInt32(Symboltable[after_i][3]))
{
int start_of_else = finalArray.IndexOf("else");
int end_of_else = finalArray.Count - 1;
for (int i = end_of_else; i >= start_of_else; i--)
{
if (finalArray[i].Equals("}"))
{
if (i < finalArray.Count - 2)
{ end_of_else = i; }
}
}
for (int i = start_of_else; i <= end_of_else; i++)
{ finalArray.RemoveAt(start_of_else); }
}
else
{
int start_of_if = finalArray.IndexOf("if");
int end_of_if = finalArray.IndexOf("}");
for (int i = start_of_if; i <= end_of_if; i++)
{ finalArray.RemoveAt(start_of_if); }
if_deleted = true;
}
}
}
}
#endregion
