public ScriptVariable Cast <ReturnT>(Lexer lexer)
{
var outputType = ScriptType.ToEnum(typeof(ReturnT));
switch (outputType)
{
case ScriptTypes.String:
switch (this.Type)
{
case ScriptTypes.Integer:
case ScriptTypes.Double:
this.Value = this.Value.ToString();
break;
case ScriptTypes.Boolean:
this.Value = (bool)this.Value ? "true" : "false";
break;
case ScriptTypes.Null:
this.Value = "null";
break;
}
this.Type = ScriptTypes.String;
break;
case ScriptTypes.Integer:
switch (this.Type)
{
case ScriptTypes.String:
int tryInt = 0;
if (int.TryParse(this.Value.ToString(), out tryInt))
{
this.Value = tryInt;
}
else
{
goto castError;
}
break;
case ScriptTypes.Double:
double tryDouble = 0;
if (double.TryParse(this.Value.ToString(), out tryDouble))
{
this.Value = tryDouble;
}
else
{
goto castError;
}
break;
case ScriptTypes.Boolean:
this.Value = (bool)this.Value ? 1 : 0;
break;
}
this.Type = ScriptTypes.Integer;
break;
case ScriptTypes.Double:
switch (this.Type)
{
case ScriptTypes.String:
case ScriptTypes.Integer:
double tryDouble = 0;
if (double.TryParse(this.Value.ToString(), out tryDouble))
{
this.Value = tryDouble;
}
else
{
goto castError;
}
break;
case ScriptTypes.Boolean:
this.Value = (bool)this.Value ? 1.0 : 0.0;
break;
}
this.Type = ScriptTypes.Double;
break;
case ScriptTypes.Boolean:
switch (this.Type)
{
case ScriptTypes.String:
this.Value = this.Value.ToString() == "true";
break;
}
this.Type = ScriptTypes.Boolean;
break;
case ScriptTypes.ListString:
case ScriptTypes.ListInteger:
case ScriptTypes.ListDouble:
case ScriptTypes.ListBoolean:
break;
case ScriptTypes.Void:
this.Value = default(ReturnT);
break;
}
return(this);
castError:
lexer.Prev();
lexer.Prev();
throw new ScriptException(
message: String.Format("Unable to cast value '{0}' from '{1}' to '{2}' on Line {3} Col {4}",
Value.ToString(),
Type.ToString(),
outputType.ToString(),
lexer.LineNumber,
lexer.Position),
row: lexer.LineNumber,
column: lexer.Position,
method: lexer.TokenContents
);
}