/// <summary>
/// Обработка управляющих символов
/// </summary>
private void HandleControlChar(string controlChar)
{
var trigger = controlChar.Substring(0, controlChar.Length - 8);
switch (trigger)
{
case "DEFINE":
var defineVarType = (string)TypeStack.Peek().GetValue();
var defineVarName = (string)NamePtrStack.Peek().GetValue();
if (CommonTables.Variables.ContainsKey(defineVarName))
{
throw new CompilatorException($"'{defineVarName}' is already declared");
}
switch (defineVarType)
{
case "int":
CommonTables.Variables[defineVarName] = 0;
break;
case "float":
CommonTables.Variables[defineVarName] = 0f;
break;
case "string":
CommonTables.Variables[defineVarName] = "";
break;
}
break;
case "ADD":
case "SUB":
case "MULT":
case "DIV":
case "POW":
var addN2 = ValuePtrStack.Pop().GetValue();
var addN1 = ValuePtrStack.Pop().GetValue();
Arithmetic(addN1, addN2, trigger);
break;
case "EQUATION":
var equationLeft = (string)NamePtrStack.Peek().GetValue();
var equationRight = ValuePtrStack.Pop().GetValue();
if (!CommonTables.Variables.ContainsKey(equationLeft))
{
throw new CompilatorException($"Variable wasn't initialized: {equationLeft}");
}
var identificatorType = CommonTables.Variables[equationLeft].GetType();
var valueType = equationRight.GetType();
if (valueType != identificatorType)
{
if (identificatorType == typeof(int) && valueType == typeof(float))
{
throw new CompilatorException("you are not allowed to appropriate float as int");
}
if (identificatorType == typeof(float) && valueType == typeof(int))
{
equationRight = equationRight as float? ?? (int)equationRight;
}
else if (identificatorType == typeof(string) && (valueType == typeof(float) || valueType == typeof(int)))
{
equationRight = equationRight.ToString();
}
else
{
throw new CompilatorException($"Trying to approptiate '{valueType}' to '{identificatorType}'");
}
}
CommonTables.Variables[equationLeft] = equationRight;
Console.WriteLine($"Eq: {equationLeft} = {equationRight}");
break;
case "GET":
var getName = (string)NamePtrStack.Pop().GetValue();
if (!CommonTables.Variables.ContainsKey(getName))
{
throw new CompilatorException($"Variable wasn't initialized: {getName}");
}
var getValue = CommonTables.Variables[getName];
ValuePtrStack.Push(CommonTables.SaveConstant(getValue));
break;
case "UNARYPP":
case "UNARYMM":
UnaryOperation(trigger);
break;
case "REMOVE_IDENT":
NamePtrStack.Pop();
break;
}
}
/// <summary>
/// Обработка арифметических операций от управляющих символов
/// </summary>
private void Arithmetic(object N1obj, object N2obj, string type)
{
object addNew = null;
if (N1obj is int && N2obj is int)
{
var N1 = (int)N1obj;
var N2 = (int)N2obj;
switch (type)
{
case "ADD":
addNew = N1 + N2;
break;
case "SUB":
addNew = N1 - N2;
break;
case "DIV":
if (N2 == 0)
{
throw new CompilatorException("dividing by zero");
}
addNew = N1 / N2;
break;
case "MULT":
addNew = N1 * N2;
break;
case "POW":
addNew = (int)Math.Pow(N1, N2);
break;
}
}
else if (N1obj is float || N2obj is float)
{
var N1 = N1obj as float? ?? (int)N1obj;
var N2 = N2obj as float? ?? (int)N2obj;
switch (type)
{
case "ADD":
addNew = N1 + N2;
break;
case "SUB":
addNew = N1 - N2;
break;
case "DIV":
if (Math.Abs(N2) < 0.0001)
{
throw new CompilatorException("dividing by zero");
}
addNew = N1 / N2;
break;
case "MULT":
addNew = N1 * N2;
break;
case "POW":
addNew = (float)Math.Pow(N1, N2);
break;
}
}
else if (N1obj is string || N2obj is string)
{
var N1 = N1obj.ToString();
var N2 = N2obj.ToString();
if (type == "ADD")
{
addNew = N1 + N2;
}
else
{
throw new CompilatorException($"Operation {type} for string types is not currently available, please do not shot at your leg");
}
}
ValuePtrStack.Push(CommonTables.SaveConstant(addNew));
}
