Value len(FunctionArguments arguments, SymbolTable symbol_table)
{
arguments.check_num_args(1);
var val = arguments.get_value_argument(0, null, null, symbol_table);
if (val.Type == ValueType.String)
{
var val_str = (StringValue)val;
return(new DynamicValue(val_str.value.Length));
}
else if (val.Type == ValueType.List)
{
var val_list = (ListValue)val;
return(new DynamicValue(val_list.Count));
}
else if (val.Type == ValueType.Dictionary)
{
var dict_val = (DictionaryValue)val;
return(new DynamicValue(dict_val.dict.Keys.Count));
}
else if (val.Type == ValueType.Enumerator)
{
var enum_val = (EnumeratorValue)val;
return(new DynamicValue(enum_val.Count));
}
else
{
throw new Exception("len(" + val.ToString() + ") is not supported.");
}
}
Value python_int(FunctionArguments arguments, SymbolTable symbol_table)
{
arguments.check_num_args(1);
var val = arguments.get_value_argument(0, null, null, symbol_table);
if (val.Type == ValueType.Dynamic)
{
var val_dyn = (DynamicValue)val;
if (val_dyn.value is int)
{
return(val_dyn);
}
else if (val_dyn.value is double)
{
if (val_dyn.value >= 0)
{
return(new DynamicValue((int)Math.Floor(val_dyn.value)));
}
else
{
return(new DynamicValue((int)Math.Floor(val_dyn.value) + 1));
}
}
else if (val_dyn.value is bool)
{
if (val_dyn.value == true)
{
return(new DynamicValue(1));
}
if (val_dyn.value == false)
{
return(new DynamicValue(0));
}
}
}
else if (val.Type == ValueType.String)
{
var val_str = (StringValue)val;
int result;
bool success = int.TryParse(val_str.value, out result);
if (success)
{
return(new DynamicValue(result));
}
else
{
throw new Exception("Failed to convert " + val_str.value + " to int.");
}
}
else
{
throw new Exception("int(" + val.Type + ") is not supported.");
}
throw new Exception("int() used in an unsupported way.");
}
Value str(FunctionArguments arguments, SymbolTable symbol_table)
{
arguments.check_num_args(1);
var val = arguments.get_value_argument(0, null, null, symbol_table);
return(new StringValue(val.ToString()));
}
/// <summary>
/// Object based programming example - Python side constructor.
/// </summary>
Value UserSum(FunctionArguments arguments, SymbolTable symbol_table)
{
arguments.check_num_args(1);
var start = arguments.get_double_argument(0, null, null, symbol_table);
return(new UserSum(start));
}
/// <summary>
/// User defined function example - add two numbers
/// </summary>
Value user_add(FunctionArguments arguments, SymbolTable symbol_table)
{
arguments.check_num_args(2);
var val1 = arguments.get_double_argument(0, null, null, symbol_table);
var val2 = arguments.get_double_argument(1, null, null, symbol_table);
return(new DynamicValue(val1 + val2));
}
/// <summary>
/// C# version of Python's dictionary::clear().
/// </summary>
static NoneValue clear(Dictionary <Value, Value> dict, FunctionArguments arguments, SymbolTable symbol_table)
{
arguments.check_num_args(0);
dict.Clear();
return(NoneValue.NONE);
}
public Value call(string function_name, FunctionArguments arguments, SymbolTable symbol_table)
{
if (function_name.Equals("add"))
{
arguments.check_num_args(1);
var val1 = arguments.get_double_argument(0, null, null, symbol_table);
sum += val1;
return(NoneValue.NONE);
}
else if (function_name.Equals("get"))
{
arguments.check_num_args(0);
return(new DynamicValue(sum));
}
return(null);
}
/// <summary>
/// C# version of Python's dictionary::values().
/// </summary>
static EnumeratorValue values(Dictionary <Value, Value> dict, FunctionArguments arguments, SymbolTable symbol_table)
{
arguments.check_num_args(0);
int count = dict.Values.Count;
var enumerator = dict.Values.GetEnumerator();
return(new EnumeratorValue(enumerator, count));
}
Value list(FunctionArguments arguments, SymbolTable symbol_table)
{
arguments.check_num_args(1);
var val = arguments.get_value_argument(0, null, null, symbol_table);
// Handle list(string)
if (val.Type == ValueType.String)
{
string str = ((StringValue)val).value;
var new_list = new List <Value>();
foreach (char c in str)
{
new_list.Add(new StringValue(c.ToString()));
}
return(new ListValue(new_list));
}
// Handle list(list)
else if (val.Type == ValueType.List)
{
// return a shallow copy of "val"
var list_val = (ListValue)val;
return(list_val.get_shallow_copy());
}
// Handle list(range)
else if (val.Type == ValueType.Range)
{
var range_val = (RangeValue)val;
var val_list = range_val.get_list();
return(new ListValue(val_list));
}
// Handle list(enumerator)
else if (val.Type == ValueType.Enumerator)
{
var enumerator = ((EnumeratorValue)val).enumerator;
var list = new List <Value>();
enumerator.Reset();
while (enumerator.MoveNext())
{
list.Add(enumerator.Current);
}
return(new ListValue(list));
}
else
{
throw new Exception("list(" + val.ToString() + ") is not supported.");
}
}
/// <summary>
/// C# version of Python's dictionary::copy().
/// </summary>
static DictionaryValue copy(Dictionary <Value, Value> dict, FunctionArguments arguments, SymbolTable symbol_table)
{
arguments.check_num_args(0);
var d2 = new Dictionary <Value, Value>();
foreach (var key in dict.Keys)
{
d2.Add(ListValue.shallow_copy(key), ListValue.shallow_copy(dict[key]));
}
return(new DictionaryValue(d2));
}
/// <summary>
/// C# version of Python's dictionary::update(). This version of
/// update() expects a single dictionary.
/// </summary>
static NoneValue update(Dictionary <Value, Value> dict, FunctionArguments arguments, SymbolTable symbol_table)
{
arguments.check_num_args(1);
var d2 = arguments.get_value_argument(0, null, null, symbol_table);
if (d2.Type != ValueType.Dictionary)
{
throw new Exception("This version of dictionary::update(dict) requires a dictionary argument.");
}
var dict2 = ((DictionaryValue)d2).dict;
foreach (var key in dict2.Keys)
{
dict[key] = ListValue.shallow_copy(dict2[key]);
}
return(NoneValue.NONE);
}
