public IEnumerable <Instruction> ProvideValue(VariableDefinitionReference vardefref, ModuleDefinition module, BaseNode node, ILContext context)
{
INode sourceNode = null;
((IElementNode)node).Properties.TryGetValue(new XmlName("", "Source"), out sourceNode);
if (sourceNode == null)
{
((IElementNode)node).Properties.TryGetValue(new XmlName(XamlParser.XFUri, "Source"), out sourceNode);
}
INode styleNode = null;
if (!((IElementNode)node).Properties.TryGetValue(new XmlName("", "Style"), out styleNode) &&
!((IElementNode)node).Properties.TryGetValue(new XmlName(XamlParser.XFUri, "Style"), out styleNode) &&
((IElementNode)node).CollectionItems.Count == 1)
{
styleNode = ((IElementNode)node).CollectionItems[0];
}
if (sourceNode != null && styleNode != null)
{
throw new XamlParseException("StyleSheet can not have both a Source and a content", node);
}
if (sourceNode == null && styleNode == null)
{
throw new XamlParseException("StyleSheet require either a Source or a content", node);
}
if (styleNode != null && !(styleNode is ValueNode))
{
throw new XamlParseException("Style property or Content is not a string literal", node);
}
if (sourceNode != null && !(sourceNode is ValueNode))
{
throw new XamlParseException("Source property is not a string literal", node);
}
if (styleNode != null)
{
var style = (styleNode as ValueNode).Value as string;
yield return(Create(Ldstr, style));
yield return(Create(Call, module.ImportMethodReference(("Xamarin.Forms.Core", "Xamarin.Forms.StyleSheets", "StyleSheet"),
methodName: "FromString",
paramCount: 1,
predicate: md => md.IsStatic)));
}
else
{
var source = (sourceNode as ValueNode)?.Value as string;
INode rootNode = node;
while (!(rootNode is ILRootNode))
{
rootNode = rootNode.Parent;
}
var rootTargetPath = RDSourceTypeConverter.GetPathForType(module, ((ILRootNode)rootNode).TypeReference);
var uri = new Uri(source, UriKind.Relative);
var resourcePath = ResourceDictionary.RDSourceTypeConverter.GetResourcePath(uri, rootTargetPath);
//fail early
var resourceId = XamlCTask.GetResourceIdForPath(module, resourcePath);
if (resourceId == null)
{
throw new XamlParseException($"Resource '{source}' not found.", node);
}
yield return(Create(Ldtoken, module.ImportReference(((ILRootNode)rootNode).TypeReference)));
yield return(Create(Call, module.ImportMethodReference(("mscorlib", "System", "Type"), methodName: "GetTypeFromHandle", paramCount: 1, predicate: md => md.IsStatic)));
yield return(Create(Call, module.ImportMethodReference(("mscorlib", "System.Reflection", "IntrospectionExtensions"), methodName: "GetTypeInfo", paramCount: 1, predicate: md => md.IsStatic)));
yield return(Create(Callvirt, module.ImportPropertyGetterReference(("mscorlib", "System.Reflection", "TypeInfo"), propertyName: "Assembly", flatten: true)));
yield return(Create(Ldstr, resourceId)); //resourceId
foreach (var instruction in node.PushXmlLineInfo(context))
{
yield return(instruction); //lineinfo
}
yield return(Create(Call, module.ImportMethodReference(("Xamarin.Forms.Core", "Xamarin.Forms.StyleSheets", "StyleSheet"),
methodName: "FromAssemblyResource",
paramCount: 3,
predicate: md => md.IsStatic)));
}
//the variable is of type `object`. fix that
var vardef = new VariableDefinition(module.ImportReference(("Xamarin.Forms.Core", "Xamarin.Forms.StyleSheets", "StyleSheet")));
yield return(Create(Stloc, vardef));
vardefref.VariableDefinition = vardef;
}
public IEnumerable <Instruction> ProvideValue(VariableDefinitionReference vardefref, ModuleDefinition module, BaseNode node, ILContext context)
{
INode sourceNode = null;
((IElementNode)node).Properties.TryGetValue(new XmlName("", "Source"), out sourceNode);
if (sourceNode == null)
{
((IElementNode)node).Properties.TryGetValue(new XmlName(XamlParser.XFUri, "Source"), out sourceNode);
}
INode styleNode = null;
if (!((IElementNode)node).Properties.TryGetValue(new XmlName("", "Style"), out styleNode) &&
!((IElementNode)node).Properties.TryGetValue(new XmlName(XamlParser.XFUri, "Style"), out styleNode) &&
((IElementNode)node).CollectionItems.Count == 1)
{
styleNode = ((IElementNode)node).CollectionItems[0];
}
if (sourceNode != null && styleNode != null)
{
throw new XamlParseException($"StyleSheet can not have both a Source and a content", node);
}
if (sourceNode == null && styleNode == null)
{
throw new XamlParseException($"StyleSheet require either a Source or a content", node);
}
if (styleNode != null && !(styleNode is ValueNode))
{
throw new XamlParseException($"Style property or Content is not a string literal", node);
}
if (sourceNode != null && !(sourceNode is ValueNode))
{
throw new XamlParseException($"Source property is not a string literal", node);
}
if (styleNode != null)
{
var style = (styleNode as ValueNode).Value as string;
yield return(Create(Ldstr, style));
var fromString = module.ImportReferenceCached(typeof(StyleSheets.StyleSheet).GetMethods().FirstOrDefault(mi => mi.Name == nameof(StyleSheets.StyleSheet.FromString) && mi.GetParameters().Length == 1));
yield return(Create(Call, module.ImportReference(fromString)));
}
else
{
string source = (sourceNode as ValueNode)?.Value as string;
INode rootNode = node;
while (!(rootNode is ILRootNode))
{
rootNode = rootNode.Parent;
}
var rootTargetPath = RDSourceTypeConverter.GetPathForType(module, ((ILRootNode)rootNode).TypeReference);
var uri = new Uri(source, UriKind.Relative);
var resourcePath = ResourceDictionary.RDSourceTypeConverter.GetResourcePath(uri, rootTargetPath);
//fail early
var resourceId = XamlCTask.GetResourceIdForPath(module, resourcePath);
if (resourceId == null)
{
throw new XamlParseException($"Resource '{source}' not found.", node);
}
var getTypeFromHandle = module.ImportReferenceCached(typeof(Type).GetMethod(nameof(Type.GetTypeFromHandle), new[] { typeof(RuntimeTypeHandle) }));
var getAssembly = module.ImportReferenceCached(typeof(Type).GetProperty(nameof(Type.Assembly)).GetGetMethod());
yield return(Create(Ldtoken, module.ImportReference(((ILRootNode)rootNode).TypeReference)));
yield return(Create(Call, module.ImportReference(getTypeFromHandle)));
yield return(Create(Callvirt, module.ImportReference(getAssembly))); //assembly
yield return(Create(Ldstr, resourceId)); //resourceId
foreach (var instruction in node.PushXmlLineInfo(context))
{
yield return(instruction); //lineinfo
}
var fromAssemblyResource = module.ImportReferenceCached(typeof(StyleSheets.StyleSheet).GetMethods().FirstOrDefault(mi => mi.Name == nameof(StyleSheets.StyleSheet.FromAssemblyResource) && mi.GetParameters().Length == 3));
yield return(Create(Call, module.ImportReference(fromAssemblyResource)));
}
//the variable is of type `object`. fix that
var vardef = new VariableDefinition(module.ImportReferenceCached(typeof(StyleSheets.StyleSheet)));
yield return(Create(Stloc, vardef));
vardefref.VariableDefinition = vardef;
}
