public int Eval(RuntimeEnvironment runtimeEnvironment, FunctionEnvironment functionEnvironment, int argument)
{
runtimeEnvironment.AllocateLocal(_argument.Item1);
runtimeEnvironment.GetVariable(_argument.Item1).Value = argument;
var v = _body.Eval(runtimeEnvironment, functionEnvironment);
runtimeEnvironment.Pop();
return v;
}
public override int Eval(RuntimeEnvironment runtimeEnvironment, FunctionEnvironment functionEnvironment)
{
var value = _expression.Eval(runtimeEnvironment, functionEnvironment);
switch (_op)
{
case Operator.Not:
return value == 0 ? 1 : 0;
case Operator.Neg:
return -value;
default:
throw new InvalidOperationException(string.Format("Unknown unary operator: {0}", _op));
}
}
public int Eval()
{
var runtimeEnvironment = new RuntimeEnvironment();
return _expression.Eval(runtimeEnvironment, _functionEnvironment);
}
public override int Eval(RuntimeEnvironment runtimeEnvironment, FunctionEnvironment functionEnvironment)
{
var argumentValue = _arg.Eval(runtimeEnvironment, functionEnvironment);
var function = functionEnvironment.GetFunction(_name);
return function.Eval(runtimeEnvironment, functionEnvironment, argumentValue);
}
public int Eval()
{
var runtimeEnvironment = new RuntimeEnvironment();
return(_expression.Eval(runtimeEnvironment, _functionEnvironment));
}
public override int Eval(RuntimeEnvironment runtimeEnvironment, FunctionEnvironment functionEnvironment)
{
var v1 = _e1.Eval(runtimeEnvironment, functionEnvironment);
var v2 = _e2.Eval(runtimeEnvironment, functionEnvironment);
switch (_op)
{
case Operator.Add:
return v1 + v2;
case Operator.Div:
return v1 / v2;
case Operator.Mul:
return v1 * v2;
case Operator.Sub:
return v1 - v2;
case Operator.Eq:
return v1 == v2 ? 1 : 0;
case Operator.Ne:
return v1 != v2 ? 1 : 0;
case Operator.Lt:
return v1 < v2 ? 1 : 0;
case Operator.Le:
return v1 <= v2 ? 1 : 0;
case Operator.Gt:
return v1 > v2 ? 1 : 0;
case Operator.Ge:
return v1 >= v2 ? 1 : 0;
case Operator.And:
return v1 == 0 ? 0 : v2;
case Operator.Or:
return v1 == 0 ? v2 : 1;
default:
throw new InvalidOperationException(string.Format("Unknown binary operator: {0}", _op));
}
}
