private void EvaluateExpressionItem(T1ExpressionItem expression)
{
switch (expression.Operator)
{
case T1Operator.DirectByte:
if (expression.OperandLeft.Value is byte)
{
ExpressionResult = (byte)expression.OperandLeft.Value;
}
else if (expression.OperandLeft.Value is T1ExpressionItem)
{
EvaluateExpression(expression.OperandLeft);
}
else
{
throw new Exception("Runtime error: type mismatch");
}
ExpressionType = T1VariableType.Byte;
break;
case T1Operator.DirectInt:
if (expression.OperandLeft.Value is int)
{
ExpressionResult = (int)expression.OperandLeft.Value;
}
else if (expression.OperandLeft.Value is T1ExpressionItem)
{
EvaluateExpression(expression.OperandLeft);
}
else
{
throw new Exception("Runtime error: type mismatch");
}
ExpressionType = T1VariableType.Int;
break;
case T1Operator.DirectNumeric:
if (expression.OperandLeft.Value is double)
{
ExpressionResult = (double)expression.OperandLeft.Value;
}
else if (expression.OperandLeft.Value is T1ExpressionItem)
{
EvaluateExpression(expression.OperandLeft);
}
else
{
throw new Exception("Runtime error: type mismatch");
}
ExpressionType = T1VariableType.Double;
break;
case T1Operator.DirectString:
if (expression.OperandLeft.Value is string)
{
ExpressionResult = (string)expression.OperandLeft.Value;
}
else if (expression.OperandLeft.Value is T1ExpressionItem)
{
EvaluateExpression(expression.OperandLeft);
}
else
{
throw new Exception("Runtime error: type mismatch");
}
ExpressionType = T1VariableType.String;
break;
case T1Operator.Dereference:
T1Variable variable = ((T1RuntimeVairableReference)expression.OperandLeft.Value).Scope.VariableTable[((T1RuntimeVairableReference)expression.OperandLeft.Value).VariableId];
switch (variable.VariableType)
{
case T1VariableType.Byte:
ExpressionResult = (byte)variable.Value;
break;
case T1VariableType.Double:
ExpressionResult = (double)variable.Value;
break;
case T1VariableType.Int:
ExpressionResult = (int)variable.Value;
break;
case T1VariableType.String:
ExpressionResult = (string)variable.Value;
break;
}
ExpressionType = variable.VariableType;
break;
case T1Operator.Concatanate:
EvaluateExpression(expression.OperandLeft);
ExpressionStackPush();
EvaluateExpression(expression.OperandRight);
ExpressionResult = ExpressionStackPopString() + (string)ExpressionResult;
ExpressionType = T1VariableType.String;
break;
case T1Operator.Add:
EvaluateExpression(expression.OperandLeft);
ExpressionStackPush();
EvaluateExpression(expression.OperandRight);
switch (ExpressionType)
{
case T1VariableType.Int:
ExpressionResult = ExpressionStackPopInt() + (int)ExpressionResult;
break;
case T1VariableType.Byte:
ExpressionResult = ExpressionStackPopByte() + (byte)ExpressionResult;
break;
case T1VariableType.Double:
ExpressionResult = ExpressionStackPopDouble() + (double)ExpressionResult;
break;
default:
throw new Exception("Runtime error: Invalid type in math");
}
break;
case T1Operator.Subtract:
EvaluateExpression(expression.OperandLeft);
ExpressionStackPush();
EvaluateExpression(expression.OperandRight);
switch (ExpressionType)
{
case T1VariableType.Int:
ExpressionResult = ExpressionStackPopInt() - (int)ExpressionResult;
break;
case T1VariableType.Byte:
ExpressionResult = ExpressionStackPopByte() - (byte)ExpressionResult;
break;
case T1VariableType.Double:
ExpressionResult = ExpressionStackPopDouble() - (double)ExpressionResult;
break;
default:
throw new Exception("Runtime error: Invalid type in math");
}
break;
case T1Operator.Multiply:
EvaluateExpression(expression.OperandLeft);
ExpressionStackPush();
EvaluateExpression(expression.OperandRight);
switch (ExpressionType)
{
case T1VariableType.Int:
ExpressionResult = ExpressionStackPopInt() * (int)ExpressionResult;
break;
case T1VariableType.Byte:
ExpressionResult = ExpressionStackPopByte() * (byte)ExpressionResult;
break;
case T1VariableType.Double:
ExpressionResult = ExpressionStackPopDouble() * (double)ExpressionResult;
break;
default:
throw new Exception("Runtime error: Invalid type in math");
}
break;
case T1Operator.Divide:
EvaluateExpression(expression.OperandLeft);
ExpressionStackPush();
EvaluateExpression(expression.OperandRight);
switch (ExpressionType)
{
case T1VariableType.Int:
ExpressionResult = ExpressionStackPopInt() / (int)ExpressionResult;
break;
case T1VariableType.Byte:
ExpressionResult = ExpressionStackPopByte() / (byte)ExpressionResult;
break;
case T1VariableType.Double:
ExpressionResult = ExpressionStackPopDouble() / (double)ExpressionResult;
break;
default:
throw new Exception("Runtime error: Invalid type in math");
}
break;
case T1Operator.Mod:
EvaluateExpression(expression.OperandLeft);
ExpressionStackPush();
EvaluateExpression(expression.OperandRight);
switch (ExpressionType)
{
case T1VariableType.Int:
ExpressionResult = ExpressionStackPopInt() % (int)ExpressionResult;
break;
case T1VariableType.Byte:
ExpressionResult = ExpressionStackPopByte() % (byte)ExpressionResult;
break;
case T1VariableType.Double:
ExpressionResult = ExpressionStackPopDouble() % (double)ExpressionResult;
break;
default:
throw new Exception("Runtime error: Invalid type in math");
}
break;
case T1Operator.ShiftLeft:
EvaluateExpression(expression.OperandLeft);
ExpressionStackPush();
EvaluateExpression(expression.OperandRight);
ExpressionResult = ExpressionStackPopInt() << (int)ExpressionResult;
break;
case T1Operator.Power:
EvaluateExpression(expression.OperandLeft);
ExpressionStackPush();
EvaluateExpression(expression.OperandRight);
ExpressionResult = (int)Math.Pow(ExpressionStackPopInt(), (int)ExpressionResult);
break;
case T1Operator.ShiftRight:
EvaluateExpression(expression.OperandLeft);
ExpressionStackPush();
EvaluateExpression(expression.OperandRight);
ExpressionResult = ExpressionStackPopInt() >> (int)ExpressionResult;
break;
case T1Operator.OrLogical:
EvaluateExpression(expression.OperandLeft);
ExpressionStackPush();
EvaluateExpression(expression.OperandRight);
ExpressionResult = (ExpressionStackPopDouble() == 1) || ((double)ExpressionResult == 1);
break;
case T1Operator.OrBitwise:
EvaluateExpression(expression.OperandLeft);
ExpressionStackPush();
EvaluateExpression(expression.OperandRight);
ExpressionResult = (ExpressionStackPopDouble() == 1) | ((double)ExpressionResult == 1);
break;
case T1Operator.AndLogical:
EvaluateExpression(expression.OperandLeft);
ExpressionStackPush();
EvaluateExpression(expression.OperandRight);
ExpressionResult = (ExpressionStackPopDouble() == 1) && ((double)ExpressionResult == 1);
break;
case T1Operator.AndBitwise:
EvaluateExpression(expression.OperandLeft);
ExpressionStackPush();
EvaluateExpression(expression.OperandRight);
ExpressionResult = (ExpressionStackPopDouble() == 1) & ((double)ExpressionResult == 1);
break;
}
}
public T1InstructionAssignment(T1RuntimeVairableReference variable, T1ExpressionItem expression) : base(T1InstructionType.Assignment, variable)
{
this.variable = variable;
this.expression = expression;
}
public T1InstructionConditionalJump(int labelId, T1ExpressionItem expression) : base(labelId)
{
type = T1InstructionType.ConditionalJump;
this.expression = expression;
}
public T1InstructionEvaluateExpression(T1ExpressionItem expression) : base(T1InstructionType.ExpressionEvaluation, expression)
{
this.expression = expression;
}