protected override void AddChild(SchemaMemberBase child)
{
if (!(child is SchemaMember schema))
{
throw new ArgumentNullException();
}
if (_children == null)
{
System.Threading.Interlocked.CompareExchange(ref _children, new NamedCollection <SchemaMember>(item => item.Name), null);
}
_children.Add(schema);
schema._parent = this;
}
public StateContext(int length, Func <SchemaEntryToken, IEnumerable <TMember> > mapper, Action <string> onError, object data, Collections.INamedCollection <TMember> members)
{
_bufferIndex = 0;
_buffer = new char[length];
_current = null;
_mapper = mapper;
_onError = onError;
_token = new SchemaEntryToken(data);
_stack = new Stack <SchemaMemberBase>();
this.Character = '\0';
this.State = State.None;
this.Flags = new StateVector();
_members = members ?? new Collections.NamedCollection <TMember>(item => item.Name, StringComparer.OrdinalIgnoreCase);
}
private void Map(string name, SchemaMemberBase parent)
{
//重置当前段
_current = null;
_token.Name = name;
_token.Parent = (TMember)parent;
var items = _mapper(_token);
if (items == null)
{
return;
}
if (_token.Parent == null)
{
foreach (var item in items)
{
if (_members.Contains(item.Name))
{
_current = item;
}
else
{
_members.Add((TMember)(_current = item));
}
}
}
else
{
foreach (var item in items)
{
if (_token.Parent.TryGetChild(item.Name, out _))
{
_current = item;
}
else
{
_token.Parent.AddChild(_current = item);
}
}
}
}
public void Include(string name = null)
{
var parent = this.Peek();
TMember current;
if (string.IsNullOrEmpty(name))
{
if (_bufferIndex == 0)
{
return;
}
name = this.GetBuffer();
}
if (parent == null)
{
if (_members.TryGet(name, out current))
{
_current = current;
}
else
{
this.Map(name, null);
}
}
else
{
//如果是忽略段则不需要进行子集和映射处理
if (object.ReferenceEquals(parent, SchemaMemberBase.Ignores))
{
return;
}
if (parent.TryGetChild(name, out var child))
{
_current = child;
}
else
{
this.Map(name, parent);
}
}
}
protected override void SetParent(SchemaMemberBase parent)
{
_parent = (parent as SchemaMember) ?? throw new ArgumentException();
}
protected internal override bool TryGetChild(string name, out SchemaMemberBase child)
{
child = null;
return(false);
}
protected internal override void AddChild(SchemaMemberBase child)
{
}
protected override void SetParent(SchemaMemberBase parent)
{
}
internal protected abstract void AddChild(SchemaMemberBase child);
internal protected abstract bool TryGetChild(string name, out SchemaMemberBase child);
protected abstract void SetParent(SchemaMemberBase parent);