public void Visit(FunctionExpression expression)
{
throw new NotImplementedException();
}
public void Visit(FunctionExpression expression)
{
throw new NotImplementedException();
}
/// <summary>
/// Visits a function expression
/// </summary>
/// <param name="expression">The expression</param>
/// <exception cref="ArgumentNullException">Thrown when the input parameter is null</exception>
public void Visit(FunctionExpression expression)
{
if (expression == null)
{
throw new ArgumentNullException("expression");
}
expression.Expression.Accept(this);
object param = result;
if (expression.FunctionName == "sizeof")
{
string customTypeName;
long symbolValue;
if (param is string)
{
if ((context.TryResolveCustomType((string)param, out customTypeName) &&
!DatatypeInfoProvider.IsPredefinedDatatype(customTypeName)) ||
param.ToString().StartsWith("enum") ||
param.ToString().StartsWith("struct") ||
param.ToString().StartsWith("union"))
{
result = "sizeof(" + param.ToString() + ")";
}
else
{
result = DatatypeInfoProvider.GetRpcDatatypeLength((string)param);
}
}
else if (context.TryResolveSymbol(expression.Text, out symbolValue))
{
Type value = param.GetType();
string typeName = String.Empty;
switch (value.ToString())
{
case "System.Char":
typeName = "char";
break;
case "System.Byte":
typeName = "byte";
break;
case "System.Int16":
typeName = "short";
break;
case "System.Int32":
typeName = "int";
break;
case "System.Boolean":
typeName = "boolean";
break;
default:
break;
}
result = DatatypeInfoProvider.GetRpcDatatypeLength(typeName);
}
if (result is long &&
(long)result <= 0)
{
throw new ExpressionEvaluatorException(
String.Format("cannot get the datatype length for the datatype '{0}'", param));
}
}
}
/// <summary>
/// Visits a function expression
/// </summary>
/// <param name="expression">The expression</param>
/// <exception cref="ArgumentNullException">Thrown when the input parameter is null</exception>
public void Visit(FunctionExpression expression)
{
if (expression == null)
{
throw new ArgumentNullException("expression");
}
expression.Expression.Accept(this);
object param = result;
if (expression.FunctionName == "sizeof")
{
string customTypeName;
int symbolValue;
if (param is string)
{
if ((context.TryResolveCustomType((string)param, out customTypeName)
&& !DatatypeInfoProvider.IsPredefinedDatatype(customTypeName))
|| param.ToString().StartsWith("enum")
|| param.ToString().StartsWith("struct")
|| param.ToString().StartsWith("union"))
{
result = "sizeof(" + param.ToString() + ")";
}
else
{
result = DatatypeInfoProvider.GetRpcDatatypeLength((string)param);
}
}
else if (context.TryResolveSymbol(expression.Text, out symbolValue))
{
Type value = param.GetType();
string typeName = String.Empty;
switch (value.ToString())
{
case "System.Char":
typeName = "char";
break;
case "System.Byte":
typeName = "byte";
break;
case "System.Int16":
typeName = "short";
break;
case "System.Int32":
typeName = "int";
break;
case "System.Boolean":
typeName = "boolean";
break;
default:
break;
}
result = DatatypeInfoProvider.GetRpcDatatypeLength(typeName);
}
if (result is int
&& (int)result <= 0)
{
throw new ExpressionEvaluatorException(
String.Format("cannot get the datatype length for the datatype '{0}'", param));
}
}
}
