public override IPyValue TranslateToPython(IExternalTranslationContext ctx, CsharpMethodCallExpression src)
{
string GetOperatorName()
{
if (!src.MethodInfo.IsSpecialName)
{
return(null);
}
switch (src.MethodInfo.Name)
{
case "op_Addition": return("+");
case "op_Subtraction": return("-");
case "op_Multiply": return("*");
case "op_Division": return("/");
case "op_Equality": return("==");
case "op_Inequality ": return("!=");
case "op_Implicit": return("i");
}
return(null);
}
var ats = src.MethodInfo.GetCustomAttribute <DirectCallAttribute>();
if (ats == null)
{
return(null);
}
var name = ats.Name;
var opName = GetOperatorName();
if (string.IsNullOrEmpty(name))
{
name = src.MethodInfo.Name;
}
if (opName != null)
{
name = opName;
}
var cSharpParameters = src.MethodInfo.GetParameters();
var agrsIndexByName = Enumerable.Range(0, cSharpParameters.Length)
.ToDictionary(a => cSharpParameters[a].Name, a => a);
var argsValues = new Argument[cSharpParameters.Length];
var info = MapNamedParameters(src);
for (var index = 0; index < src.Arguments.Length; index++)
{
var i = src.Arguments[index];
var pythonArgName = cSharpParameters[index].Name;
if (!string.IsNullOrEmpty(i.ExplicitName))
{
pythonArgName = i.ExplicitName;
}
var b = ctx.TranslateValue(i.MyValue);
var pyIndex = agrsIndexByName[pythonArgName];
argsValues[pyIndex] = new Argument
{
Value = b,
Name = cSharpParameters[pyIndex].Name
};
}
if (opName != null)
{
if (opName == "i" && argsValues.Length == 1)
{
return(argsValues[0].Value);
}
switch (argsValues.Length)
{
case 2:
return(new PyBinaryOperatorExpression(opName, argsValues[0].Value, argsValues[1].Value));
case 1:
return(new PyUnaryOperatorExpression(argsValues[0].Value, opName));
}
throw new NotSupportedException("Unable to convert operator " + opName + " with " + argsValues.Length +
" arguments");
}
var result = new PyMethodCallExpression(name);
var setName = false;
foreach (var i in argsValues)
{
if (i == null)
{
setName = true;
continue;
}
var item = new PyMethodInvokeValue(i.Value);
if (setName)
{
item.Name = i.Name;
}
result.Arguments.Add(item);
}
result.TrySetTargetObjectFromModule(src.MethodInfo.DeclaringType);
return(result);
}
