public static IEnumerable <CompletionItem> GetCompletionItems(IEnumerable <CompletionNamespace> namespaces, CompletionMode mode, IEnumerable <string> path, CompletionPathNode context)
{
if (mode == CompletionMode.None)
{
return(Enumerable.Empty <CompletionItem>());
}
var completions = GetCompletions(namespaces);
IEnumerable <CompletionItem> items;
if (mode == CompletionMode.Property && context != null)
{
var contextName = context.Name;
if (contextName.EndsWith("."))
{
// if it contains a dot it is a property element. only show completions for the current namespace.
contextName = contextName.TrimEnd('.');
completions = completions.Where(r => r.Prefix == context.Prefix).ToList();
}
items = completions
.SelectMany(r => r.GetProperties(contextName, path))
.Where(r => !context.Attributes.Contains(r.Name));
}
else if (mode == CompletionMode.Value && context != null && context.Mode == CompletionMode.Property)
{
items = completions.SelectMany(r => r.GetPropertyValues(path.Last(), context.LocalName, path));
}
else
{
var filter = completions.Select(r => r.GetFilter(path)).FirstOrDefault(r => r != null);
items = completions.SelectMany(r => r.GetClasses(path, filter));
}
return(items);
}
public static XmlParseInfo Read(string text)
{
var nodes = new List<CompletionPathNode>();
var info = new XmlParseInfo { Nodes = nodes, Mode = CompletionMode.None };
// check the last part of the xml to see what type of completion we are in
// and complete it so we can parse the property or class name.
var m = valueReg.Match(text);
if (m.Success)
{
info.Mode = CompletionMode.Value;
text = text.Substring(0, m.Index) + "''>";
}
else
{
m = classReg.Match(text);
if (m.Success)
info.Mode = CompletionMode.Class;
else
{
m = propertyReg.Match(text);
if (m.Success)
info.Mode = CompletionMode.Property;
}
text += ">";
}
CompletionPathNode current = null;
CompletionPathNode attribute = null;
try
{
using (var stream = GetStream(text))
using (var reader = XmlReader.Create(stream))
{
while (reader.Read())
{
attribute = null;
switch (reader.NodeType)
{
case XmlNodeType.Element:
if (reader.IsEmptyElement)
continue;
nodes.Add(current = new CompletionPathNode(reader.Prefix, reader.LocalName, CompletionMode.Class));
if (reader.HasAttributes && reader.MoveToFirstAttribute())
{
do
{
if (reader.Name == "xmlns" || reader.Prefix == "xmlns")
{
// record namespaces
if (current.Namespaces == null)
current.Namespaces = new List<CompletionNamespace>();
var prefix = reader.Prefix == "xmlns" ? reader.LocalName : string.Empty;
current.Namespaces.Add(new CompletionNamespace { Prefix = prefix, Namespace = reader.Value });
}
else
{
current.Attributes.Add(reader.Name);
attribute = new CompletionPathNode(reader.Prefix, reader.LocalName, CompletionMode.Property);
}
} while (reader.MoveToNextAttribute());
}
break;
case XmlNodeType.EndElement:
if (nodes.Count > 0)
nodes.RemoveAt(nodes.Count - 1);
current = nodes.Count > 0 ? nodes[nodes.Count - 1] : null;
break;
default:
break;
}
}
}
}
catch (XmlException)
{
// ignore errors, since xml will usually be incomplete
}
if (info.Mode == CompletionMode.Value && attribute != null)
nodes.Add(attribute);
return info;
}
public static IEnumerable<CompletionItem> GetCompletionItems(IEnumerable<CompletionNamespace> namespaces, CompletionMode mode, IEnumerable<string> path, CompletionPathNode context)
{
if (mode == CompletionMode.None)
return Enumerable.Empty<CompletionItem>();
var completions = GetCompletions(namespaces);
IEnumerable<CompletionItem> items;
if (mode == CompletionMode.Property && context != null)
{
var contextName = context.Name;
if (contextName.EndsWith("."))
{
// if it contains a dot it is a property element. only show completions for the current namespace.
contextName = contextName.TrimEnd('.');
completions = completions.Where(r => r.Prefix == context.Prefix).ToList();
}
items = completions
.SelectMany(r => r.GetProperties(contextName, path))
.Where(r => !context.Attributes.Contains(r.Name));
}
else if (mode == CompletionMode.Value && context != null && context.Mode == CompletionMode.Property)
items = completions.SelectMany(r => r.GetPropertyValues(path.Last(), context.LocalName, path));
else
{
var filter = completions.Select(r => r.GetFilter(path)).FirstOrDefault(r => r != null);
items = completions.SelectMany(r => r.GetClasses(path, filter));
}
return items;
}
public static XmlParseInfo Read(string text)
{
var nodes = new List<CompletionPathNode>();
var info = new XmlParseInfo { Nodes = nodes, Mode = CompletionMode.Class };
// complete the last node and/or attribute so the reader can find it.
string supplement = null;
bool hadLetter = false;
char last = char.MinValue;
for (int i = text.Length - 1; i >= 0; i--)
{
var ch = text[i];
if (ch == '<')
{
if (i == text.Length - 1)
break;
if (last == '/') // we're in an ending tag
info.Mode = CompletionMode.None;
if (supplement != null)
text += supplement;
text += ">";
break;
}
if (ch == '>')
{
info.Mode = CompletionMode.Class;
break;
}
if (info.Mode == CompletionMode.Class)
{
if (ch == '=')
{
info.Mode = CompletionMode.Value;
text = text.Substring(0, i + 1);
supplement = "''";
}
if (ch == '.')
{
info.Mode = CompletionMode.Property;
}
if (ch == ' ')
{
info.Mode = CompletionMode.Property;
if (hadLetter)
supplement = "=''";
}
if (char.IsLetterOrDigit(ch))
hadLetter = true;
}
last = ch;
}
CompletionPathNode current = null;
CompletionPathNode attribute = null;
try
{
using (var stream = GetStream(text))
using (var reader = XmlReader.Create(stream))
{
while (reader.Read())
{
attribute = null;
switch (reader.NodeType)
{
case XmlNodeType.Element:
if (reader.IsEmptyElement)
continue;
nodes.Add(current = new CompletionPathNode(reader.Prefix, reader.LocalName, CompletionMode.Class));
if (reader.HasAttributes && reader.MoveToFirstAttribute())
{
do
{
if (reader.Name == "xmlns" || reader.Prefix == "xmlns")
{
// record namespaces
if (current.Namespaces == null)
current.Namespaces = new List<CompletionNamespace>();
var prefix = reader.Prefix == "xmlns" ? reader.LocalName : string.Empty;
current.Namespaces.Add(new CompletionNamespace { Prefix = prefix, Namespace = reader.Value });
}
else
{
current.Attributes.Add(reader.Name);
attribute = new CompletionPathNode(reader.Prefix, reader.LocalName, CompletionMode.Property);
}
} while (reader.MoveToNextAttribute());
}
break;
case XmlNodeType.EndElement:
if (nodes.Count > 0)
nodes.RemoveAt(nodes.Count - 1);
current = nodes.Count > 0 ? nodes[nodes.Count - 1] : null;
break;
default:
break;
}
}
}
}
catch (XmlException)
{
// ignore errors, since xml will usually be incomplete
}
if (info.Mode == CompletionMode.Value && attribute != null)
nodes.Add(attribute);
return info;
}
