5 // Stephane Delcroix <stephane@mi8.be>
7 // Copyright (c) 2013 Mobile Inception
8 // Copyright (c) 2013-2014 Xamarin, Inc
10 // Permission is hereby granted, free of charge, to any person obtaining a copy
11 // of this software and associated documentation files (the "Software"), to deal
12 // in the Software without restriction, including without limitation the rights
13 // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
14 // copies of the Software, and to permit persons to whom the Software is
15 // furnished to do so, subject to the following conditions:
17 // The above copyright notice and this permission notice shall be included in
18 // all copies or substantial portions of the Software.
20 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
21 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
22 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
23 // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
24 // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
25 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
29 using System.Collections.Generic;
30 using System.Diagnostics;
32 using System.Reflection;
34 using Tizen.NUI.Binding;
35 using Tizen.NUI.BaseComponents;
36 using Tizen.NUI.UIComponents;
37 using Tizen.NUI.Binding.Internals;
39 namespace Tizen.NUI.Xaml
41 internal static class XamlParser
43 public const string XFUri = "http://xamarin.com/schemas/2014/forms";
44 public const string NUI2018Uri = "http://tizen.org/Tizen.NUI/2018/XAML";
45 public const string X2006Uri = "http://schemas.microsoft.com/winfx/2006/xaml";
46 public const string X2009Uri = "http://schemas.microsoft.com/winfx/2009/xaml";
47 public const string McUri = "http://schemas.openxmlformats.org/markup-compatibility/2006";
49 public static void ParseXaml(RootNode rootNode, XmlReader reader)
51 IList<KeyValuePair<string, string>> xmlns;
52 var attributes = ParseXamlAttributes(reader, out xmlns);
53 var prefixes = PrefixesToIgnore(xmlns);
54 (rootNode.IgnorablePrefixes ?? (rootNode.IgnorablePrefixes=new List<string>())).AddRange(prefixes);
55 rootNode.Properties.AddRange(attributes);
56 ParseXamlElementFor(rootNode, reader);
59 static void ParseXamlElementFor(IElementNode node, XmlReader reader)
61 Debug.Assert(reader.NodeType == XmlNodeType.Element);
63 var elementName = reader.Name;
64 var isEmpty = reader.IsEmptyElement;
71 switch (reader.NodeType)
73 case XmlNodeType.EndElement:
74 Debug.Assert(reader.Name == elementName); //make sure we close the right element
76 case XmlNodeType.Element:
77 // 1. Property Element.
78 if (reader.Name.Contains("."))
81 if (reader.Name.StartsWith(elementName + ".", StringComparison.Ordinal))
82 name = new XmlName(reader.NamespaceURI, reader.Name.Substring(elementName.Length + 1));
84 name = new XmlName(reader.NamespaceURI, reader.LocalName);
86 var prop = ReadNode(reader);
88 node.Properties.Add(name, prop);
90 // 2. Xaml2009 primitives, x:Arguments, ...
91 else if (reader.NamespaceURI == X2009Uri && reader.LocalName == "Arguments")
93 var prop = ReadNode(reader);
95 node.Properties.Add(XmlName.xArguments, prop);
97 // 3. DataTemplate (should be handled by 4.)
98 else if ((node.XmlType.NamespaceUri == XFUri || node.XmlType.NamespaceUri == NUI2018Uri) &&
99 (node.XmlType.Name == "DataTemplate" || node.XmlType.Name == "ControlTemplate"))
101 var prop = ReadNode(reader, true);
103 node.Properties.Add(XmlName._CreateContent, prop);
105 // 4. Implicit content, implicit collection, or collection syntax. Add to CollectionItems, resolve case later.
108 var item = ReadNode(reader, true);
110 node.CollectionItems.Add(item);
113 case XmlNodeType.Whitespace:
115 case XmlNodeType.Text:
116 case XmlNodeType.CDATA:
117 if (node.CollectionItems.Count == 1 && node.CollectionItems[0] is ValueNode)
118 ((ValueNode)node.CollectionItems[0]).Value += reader.Value.Trim();
120 node.CollectionItems.Add(new ValueNode(reader.Value.Trim(), (IXmlNamespaceResolver)reader));
123 Debug.WriteLine("Unhandled node {0} {1} {2}", reader.NodeType, reader.Name, reader.Value);
129 static INode ReadNode(XmlReader reader, bool nested = false)
131 var skipFirstRead = nested;
132 Debug.Assert(reader.NodeType == XmlNodeType.Element);
133 var name = reader.Name;
134 List<INode> nodes = new List<INode>();
137 while (skipFirstRead || reader.Read())
139 skipFirstRead = false;
141 switch (reader.NodeType)
143 case XmlNodeType.EndElement:
144 Debug.Assert(reader.Name == name);
145 if (nodes.Count == 0) //Empty element
147 if (nodes.Count == 1)
149 return new ListNode(nodes, (IXmlNamespaceResolver)reader, ((IXmlLineInfo)reader).LineNumber,
150 ((IXmlLineInfo)reader).LinePosition);
151 case XmlNodeType.Element:
152 var isEmpty = reader.IsEmptyElement && reader.Name == name;
153 var elementName = reader.Name;
154 var elementNsUri = reader.NamespaceURI;
155 var elementXmlInfo = (IXmlLineInfo)reader;
156 IList<KeyValuePair<string, string>> xmlns;
158 var attributes = ParseXamlAttributes(reader, out xmlns);
159 var prefixes = PrefixesToIgnore(xmlns);
161 IList<XmlType> typeArguments = null;
162 if (attributes.Any(kvp => kvp.Key == XmlName.xTypeArguments))
165 ((ValueNode)attributes.First(kvp => kvp.Key == XmlName.xTypeArguments).Value).Value as IList<XmlType>;
168 node = new ElementNode(new XmlType(elementNsUri, elementName, typeArguments), elementNsUri,
169 reader as IXmlNamespaceResolver, elementXmlInfo.LineNumber, elementXmlInfo.LinePosition);
170 ((IElementNode)node).Properties.AddRange(attributes);
171 (node.IgnorablePrefixes ?? (node.IgnorablePrefixes = new List<string>())).AddRange(prefixes);
173 ParseXamlElementFor((IElementNode)node, reader);
175 if (isEmpty || nested)
178 case XmlNodeType.Text:
179 node = new ValueNode(reader.Value.Trim(), (IXmlNamespaceResolver)reader, ((IXmlLineInfo)reader).LineNumber,
180 ((IXmlLineInfo)reader).LinePosition);
183 case XmlNodeType.Whitespace:
186 Debug.WriteLine("Unhandled node {0} {1} {2}", reader.NodeType, reader.Name, reader.Value);
190 throw new XamlParseException("Closing PropertyElement expected", (IXmlLineInfo)reader);
193 static IList<KeyValuePair<XmlName, INode>> ParseXamlAttributes(XmlReader reader, out IList<KeyValuePair<string,string>> xmlns)
195 Debug.Assert(reader.NodeType == XmlNodeType.Element);
196 var attributes = new List<KeyValuePair<XmlName, INode>>();
197 xmlns = new List<KeyValuePair<string, string>>();
198 for (var i = 0; i < reader.AttributeCount; i++)
200 reader.MoveToAttribute(i);
203 if (reader.NamespaceURI == "http://www.w3.org/2000/xmlns/") {
204 xmlns.Add(new KeyValuePair<string, string>(reader.LocalName, reader.Value));
208 var namespaceUri = reader.NamespaceURI;
209 if (reader.LocalName.Contains(".") && namespaceUri == "")
210 namespaceUri = ((IXmlNamespaceResolver)reader).LookupNamespace("");
211 var propertyName = new XmlName(namespaceUri, reader.LocalName);
213 object value = reader.Value;
215 if (reader.NamespaceURI == X2006Uri)
217 switch (reader.Name) {
219 propertyName = XmlName.xKey;
222 propertyName = XmlName.xName;
225 case "x:FieldModifier":
228 Debug.WriteLine("Unhandled attribute {0}", reader.Name);
233 if (reader.NamespaceURI == X2009Uri)
235 switch (reader.Name) {
237 propertyName = XmlName.xKey;
240 propertyName = XmlName.xName;
242 case "x:TypeArguments":
243 propertyName = XmlName.xTypeArguments;
244 value = TypeArgumentsParser.ParseExpression((string)value, (IXmlNamespaceResolver)reader, (IXmlLineInfo)reader);
247 propertyName = XmlName.xDataType;
250 case "x:FieldModifier":
252 case "x:FactoryMethod":
253 propertyName = XmlName.xFactoryMethod;
256 propertyName = XmlName.xArguments;
259 Debug.WriteLine("Unhandled attribute {0}", reader.Name);
264 var propertyNode = GetValueNode(value, reader);
265 attributes.Add(new KeyValuePair<XmlName, INode>(propertyName, propertyNode));
267 reader.MoveToElement();
271 static IList<string> PrefixesToIgnore(IList<KeyValuePair<string, string>> xmlns)
273 var prefixes = new List<string>();
274 foreach (var kvp in xmlns) {
275 var prefix = kvp.Key;
277 string typeName = null, ns = null, asm = null, targetPlatform = null;
278 XmlnsHelper.ParseXmlns(kvp.Value, out typeName, out ns, out asm, out targetPlatform);
279 if (targetPlatform == null)
282 if (targetPlatform != Device.RuntimePlatform)
284 // Special case for Windows backward compatibility
285 if (targetPlatform == "Windows" && Device.RuntimePlatform == Device.UWP)
288 prefixes.Add(prefix);
290 } catch (InvalidOperationException) {
291 prefixes.Add(prefix);
297 static IValueNode GetValueNode(object value, XmlReader reader)
299 var valueString = value as string;
300 if (valueString != null && valueString.Trim().StartsWith("{}", StringComparison.Ordinal))
302 return new ValueNode(valueString.Substring(2), (IXmlNamespaceResolver)reader, ((IXmlLineInfo)reader).LineNumber,
303 ((IXmlLineInfo)reader).LinePosition);
305 if (valueString != null && valueString.Trim().StartsWith("{", StringComparison.Ordinal))
307 return new MarkupNode(valueString.Trim(), reader as IXmlNamespaceResolver, ((IXmlLineInfo)reader).LineNumber,
308 ((IXmlLineInfo)reader).LinePosition);
310 return new ValueNode(value, (IXmlNamespaceResolver)reader, ((IXmlLineInfo)reader).LineNumber,
311 ((IXmlLineInfo)reader).LinePosition);
314 static IList<XmlnsDefinitionAttribute> s_xmlnsDefinitions;
315 public static IList<Assembly> s_assemblies = new List<Assembly>();// = new Assembly[]{};
317 static void GatherXmlnsDefinitionAttributes()
319 //this could be extended to look for [XmlnsDefinition] in all assemblies
320 // var assemblies = new [] {
321 // typeof(View).GetTypeInfo().Assembly,
322 // //typeof(XamlLoader).GetTypeInfo().Assembly,
324 // s_assemblies = new Assembly[]{typeof(View).GetTypeInfo().Assembly};
325 s_assemblies.Add(typeof(View).GetTypeInfo().Assembly);
327 s_xmlnsDefinitions = new List<XmlnsDefinitionAttribute>();
329 foreach (var assembly in s_assemblies)
330 foreach (XmlnsDefinitionAttribute attribute in assembly.GetCustomAttributes(typeof(XmlnsDefinitionAttribute))) {
331 s_xmlnsDefinitions.Add(attribute);
332 attribute.AssemblyName = attribute.AssemblyName ?? assembly.FullName;
336 public static Type GetElementType(XmlType xmlType, IXmlLineInfo xmlInfo, Assembly currentAssembly,
337 out XamlParseException exception)
339 if (s_xmlnsDefinitions == null)
340 GatherXmlnsDefinitionAttributes();
342 var namespaceURI = xmlType.NamespaceUri;
343 var elementName = xmlType.Name;
344 var typeArguments = xmlType.TypeArguments;
347 var lookupAssemblies = new List<XmlnsDefinitionAttribute>();
348 var lookupNames = new List<string>();
350 foreach (var xmlnsDef in s_xmlnsDefinitions) {
351 if (xmlnsDef.XmlNamespace != namespaceURI)
353 lookupAssemblies.Add(xmlnsDef);
356 if (lookupAssemblies.Count == 0) {
357 string ns, asmstring, _;
358 XmlnsHelper.ParseXmlns(namespaceURI, out _, out ns, out asmstring, out _);
359 lookupAssemblies.Add(new XmlnsDefinitionAttribute(namespaceURI, ns) {
360 AssemblyName = asmstring ?? currentAssembly.FullName
364 lookupNames.Add(elementName);
365 lookupNames.Add(elementName + "Extension");
367 for (var i = 0; i < lookupNames.Count; i++)
369 var name = lookupNames[i];
370 if (name.Contains(":"))
371 name = name.Substring(name.LastIndexOf(':') + 1);
372 if (typeArguments != null)
373 name += "`" + typeArguments.Count; //this will return an open generic Type
374 lookupNames[i] = name;
378 foreach (var asm in lookupAssemblies) {
379 foreach (var name in lookupNames)
380 if ((type = Type.GetType($"{asm.ClrNamespace}.{name}, {asm.AssemblyName}")) != null)
386 if (type != null && typeArguments != null)
388 XamlParseException innerexception = null;
389 var args = typeArguments.Select(delegate(XmlType xmltype)
391 XamlParseException xpe;
392 var t = GetElementType(xmltype, xmlInfo, currentAssembly, out xpe);
395 innerexception = xpe;
400 if (innerexception != null)
402 exception = innerexception;
405 type = type.MakeGenericType(args);
409 exception = new XamlParseException($"Type {elementName} not found in xmlns {namespaceURI}", xmlInfo);