public static Constant map(Constant _this, Constant[] arguments, Scope scope)
{
var array = (Javascript.Array)_this;
if (arguments.Length != 1)
{
throw new Javascript.TypeError("Array.map takes one argument");
}
var callback = (Javascript.Function)arguments[0];
var result = new Javascript.Array();
for (int i = 0; i < array.List.Count; i++)
{
var callbackArguments = new ArgumentList()
{
Arguments = new List <Expression>()
{
array.List[i],
new Javascript.Number(i),
array
}
};
var value = callback.Call(callbackArguments, Static.Undefined, scope);
result.List.Add(value);
}
return(result);
}
public static Constant slice(Constant _this, Constant[] arguments, Scope scope)
{
var array = (Javascript.Array)_this;
var begin = (int)(arguments.Length > 0 ? ((Javascript.Number)arguments[0]).Value : 0);
var end = (int)(arguments.Length > 1 ? ((Javascript.Number)arguments[1]).Value : array.List.Count);
var result = new Javascript.Array();
for (int i = begin; i < end; i++)
{
result.List.Add(array.List[i]);
}
return(result);
}
public Javascript.Object InvokeMember(int index, string[] names, Javascript.Array arguments)
{
if (index + 1 == names.Length)
{
try{
return(((FunctionBase)this[names[index]]).Invoke(this, arguments));
}catch (System.NullReferenceException e) {
//※: 一回目の NullReferenceException は時間がかかる
throw new Null.UndefinedException(e);
}catch (System.InvalidCastException e) {
throw new System.Exception("指定したオブジェクトは関数ではありません", e);
}catch (System.Exception e) { throw e; }
}
else
{
return(this[names[index]].InvokeMember(index + 1, names, arguments));
}
}
public static Constant filter(Constant _this, Constant[] arguments, Scope scope)
{
var array = (Javascript.Array)_this;
if (arguments.Length == 0 || arguments.Length > 2)
{
throw new Javascript.TypeError("Array.filter takes one or two argument");
}
var callback = (Javascript.Function)arguments[0];
var result = new Javascript.Array();
for (int i = 0; i < array.List.Count; i++)
{
var element = array.List[i];
var callbackArguments = new ArgumentList()
{
Arguments = new List <Expression>()
{
element,
new Javascript.Number(i),
array
}
};
var value = callback.Call(callbackArguments, arguments.Length == 1 ? Static.Undefined : arguments[1], scope);
if (value is Javascript.Boolean)
{
if (((Javascript.Boolean)value).Value)
{
result.List.Add(element);
}
}
}
return(result);
}
public static Constant splice(Constant _this, Constant[] arguments, Scope scope)
{
var array = (Javascript.Array)_this;
var start = arguments.Length > 0 ? (int)Tool.GetArgument <Javascript.Number>(arguments, 0, "Array.splice").Value : 0;
var count = (int)(arguments.Length > 1 ? ((Javascript.Number)arguments[1]).Value : array.List.Count - start);
// Remove items
var result = new Javascript.Array();
result.List.AddRange(array.List.GetRange(start, count));
array.List.RemoveRange(start, count);
// Add items
var addCount = arguments.Length <= 2 ? 0 : arguments.Length - 2;
for (var i = 0; i < addCount; i++)
{
array.List.Insert(start + i, arguments[i + 2]);
}
return(result);
}
