/// <summary>
/// Returns an unitialized instance of the specified type or <see cref="__PHP_Incomplete_Class"/>.
/// </summary>
/// <param name="typeName">The type name.</param>
/// <param name="context">Current <see cref="ScriptContext"/>.</param>
/// <returns>The newly created instance or <B>null</B> if <paramref name="typeName"/> denotes
/// a primitive type.</returns>
/// <remarks>
/// If the <paramref name="typeName"/> denotes a CLR type, no constructor is executed. If the
/// <paramref name="typeName"/> denotes a PHP type, no user constructor (e.g. <c>__construct</c>)
/// is executed.
/// </remarks>
public static DObject GetUninitializedInstance(string /*!*/ typeName, ScriptContext /*!*/ context)
{
// resolve the specified type
DTypeDesc type = context.ResolveType(typeName);
if (type == null || type.IsAbstract)
{
PhpCallback callback = context.Config.Variables.DeserializationCallback;
if (callback != null && !callback.IsInvalid)
{
callback.Invoke(typeName);
type = context.ResolveType(typeName);
if (type == null || type.IsAbstract)
{
// unserialize_callback_func failed
PhpException.Throw(PhpError.Warning, CoreResources.GetString("unserialize_callback_failed",
((IPhpConvertible)callback).ToString()));
}
}
}
if (type == null || type.IsAbstract)
{
// type not found -> create __PHP_Incomplete_Class
__PHP_Incomplete_Class pic = new __PHP_Incomplete_Class(context, false);
pic.__PHP_Incomplete_Class_Name.Value = typeName;
pic.__PHP_Incomplete_Class_Name.IsSet = true;
return(pic);
}
else
{
// create the instance
return(type.New(context) as DObject);
}
}
/// <summary>
/// Parses the <B>O</B> and <B>C</B> tokens.
/// </summary>
/// <param name="serializable">If <B>true</B>, the last token eaten was <B>C</B>, otherwise <B>O</B>.</param>
object ParseObject(bool serializable)
{
Debug.Assert(_ctx != null);
var seq = AddSeq();
// :{length}:"{classname}":
Consume(Tokens.Colon); // :
string class_name = ReadString().AsString(); // <length>:"classname"
var tinfo = _ctx?.GetDeclaredType(class_name, true);
// :{count}:
Consume(Tokens.Colon); // :
var count = (unchecked ((int)ReadInteger()));
if (count < 0)
{
ThrowInvalidLength();
}
Consume(Tokens.Colon);
// bind to the specified class
object obj;
if (tinfo != null)
{
obj = tinfo.CreateUninitializedInstance(_ctx);
if (obj == null)
{
throw new ArgumentException(string.Format(LibResources.class_instantiation_failed, class_name));
}
}
else
{
// TODO: DeserializationCallback
// __PHP_Incomplete_Class
obj = new __PHP_Incomplete_Class();
throw new NotImplementedException("__PHP_Incomplete_Class");
}
// {
Consume(Tokens.BraceOpen);
if (serializable)
{
// check whether the instance is PHP5.1 Serializable
if (!(obj is global::Serializable))
{
throw new ArgumentException(string.Format(LibResources.class_has_no_unserializer, class_name));
}
PhpString serializedBytes;
if (count > 0)
{
// add serialized representation to be later passed to unserialize
var buffer = new byte[count];
if (_stream.Read(buffer, 0, count) < count)
{
ThrowEndOfStream();
}
serializedBytes = new PhpString(buffer);
}
else
{
serializedBytes = PhpString.Empty;
}
// Template: Serializable::unserialize(data)
((global::Serializable)obj).unserialize(serializedBytes);
}
else
{
var __unserialize = tinfo.RuntimeMethods[TypeMethods.MagicMethods.__unserialize];
var __unserialize_array = __unserialize != null ? new PhpArray(count) : null;
// parse properties
while (--count >= 0)
{
var key = Parse();
var value = Parse();
//
if (key.TryToIntStringKey(out var iskey))
{
if (__unserialize_array != null)
{
__unserialize_array[iskey] = value;
}
else
{
// set property
SetProperty(obj, tinfo, iskey.ToString(), value, _ctx);
}
}
else
{
this.ThrowInvalidDataType();
}
}
if (__unserialize != null)
{
__unserialize.Invoke(_ctx, obj, __unserialize_array);
}
else
{
// __wakeup
var __wakeup = tinfo.RuntimeMethods[TypeMethods.MagicMethods.__wakeup];
if (__wakeup != null)
{
__wakeup.Invoke(_ctx, obj);
}
}
}
// }
Consume(Tokens.BraceClose);
//
seq.Value = PhpValue.FromClass(obj);
return(obj);
}
/// <summary>
/// Parses the <B>O</B> and <B>C</B> tokens.
/// </summary>
/// <param name="serializable">If <B>true</B>, the last token eaten was <B>C</B>, otherwise <B>O</B>.</param>
object ParseObject(bool serializable)
{
// :{length}:"{classname}":
Consume(Tokens.Colon); // :
string class_name = ReadString().AsString(); // <length>:"classname"
var tinfo = _ctx.GetDeclaredType(class_name, true);
// :{count}:
Consume(Tokens.Colon); // :
var count = (unchecked ((int)ReadInteger()));
if (count < 0)
{
ThrowInvalidLength();
}
Consume(Tokens.Colon);
// bind to the specified class
object obj;
if (tinfo != null)
{
obj = tinfo.GetUninitializedInstance(_ctx);
if (obj == null)
{
throw new ArgumentException(string.Format(LibResources.class_instantiation_failed, class_name));
}
}
else
{
// TODO: DeserializationCallback
// __PHP_Incomplete_Class
obj = new __PHP_Incomplete_Class();
throw new NotImplementedException("__PHP_Incomplete_Class");
}
Consume(Tokens.BraceOpen);
if (serializable)
{
// check whether the instance is PHP5.1 Serializable
if (!(obj is global::Serializable))
{
throw new ArgumentException(string.Format(LibResources.class_has_no_unserializer, class_name));
}
PhpString serializedBytes;
if (count > 0)
{
// add serialized representation to be later passed to unserialize
var buffer = new byte[count];
if (_stream.Read(buffer, 0, count) < count)
{
ThrowEndOfStream();
}
serializedBytes = new PhpString(buffer);
}
else
{
serializedBytes = PhpString.Empty;
}
// Template: Serializable::unserialize(data)
((global::Serializable)obj).unserialize(serializedBytes);
}
else
{
// parse properties
while (--count >= 0)
{
// parse property name
var nameval = Parse();
var pname = nameval.ToStringOrNull();
if (pname == null)
{
if (!nameval.IsInteger())
{
ThrowInvalidDataType();
}
pname = nameval.ToStringOrThrow(_ctx);
}
// parse property value
var pvalue = Parse();
// set property
SetProperty(obj, tinfo, pname, pvalue, _ctx);
}
// __wakeup
var __wakeup = tinfo.RuntimeMethods[TypeMethods.MagicMethods.__wakeup];
if (__wakeup != null)
{
__wakeup.Invoke(_ctx, obj);
}
}
Consume(Tokens.BraceClose);
//
return(obj);
}
/// <summary>
/// Returns an unitialized instance of the specified type or <see cref="__PHP_Incomplete_Class"/>.
/// </summary>
/// <param name="typeName">The type name.</param>
/// <param name="context">Current <see cref="ScriptContext"/>.</param>
/// <returns>The newly created instance or <B>null</B> if <paramref name="typeName"/> denotes
/// a primitive type.</returns>
/// <remarks>
/// If the <paramref name="typeName"/> denotes a CLR type, no constructor is executed. If the
/// <paramref name="typeName"/> denotes a PHP type, no user constructor (e.g. <c>__construct</c>)
/// is executed.
/// </remarks>
public static DObject GetUninitializedInstance(string/*!*/ typeName, ScriptContext/*!*/ context)
{
// resolve the specified type
DTypeDesc type = context.ResolveType(typeName);
if (type == null || type.IsAbstract)
{
PhpCallback callback = context.Config.Variables.DeserializationCallback;
if (callback != null && !callback.IsInvalid)
{
callback.Invoke(typeName);
type = context.ResolveType(typeName);
if (type == null || type.IsAbstract)
{
// unserialize_callback_func failed
PhpException.Throw(PhpError.Warning, CoreResources.GetString("unserialize_callback_failed",
((IPhpConvertible)callback).ToString()));
}
}
}
if (type == null || type.IsAbstract)
{
// type not found -> create __PHP_Incomplete_Class
__PHP_Incomplete_Class pic = new __PHP_Incomplete_Class(context, false);
pic.__PHP_Incomplete_Class_Name.Value = typeName;
pic.__PHP_Incomplete_Class_Name.IsSet = true;
return pic;
}
else
{
// create the instance
return type.New(context) as DObject;
}
}
