public Empty Visit(DekiScriptAccess expr, StringBuilder state)
{
expr.Prefix.VisitWith(this, state);
DekiScriptString index = expr.Index as DekiScriptString;
if ((index != null) && DekiScriptParser.IsIdentifier(index.Value))
{
state.Append(".");
state.Append(index.Value);
}
else
{
state.Append("[");
expr.Index.VisitWith(this, state);
state.Append("]");
}
return(Empty.Value);
}
public Empty Visit(DekiScriptMapConstructor expr, StringBuilder state)
{
state.Append("{");
bool first = true;
foreach (var field in expr.Fields)
{
if (!first)
{
state.Append(", ");
}
else
{
state.Append(" ");
}
first = false;
// check if key is a string and a valid identifier
if (field.Key is DekiScriptString)
{
string key = ((DekiScriptString)field.Key).Value;
if (DekiScriptParser.IsIdentifier(key))
{
state.Append(key + " : " + field.Value);
}
else
{
state.Append(key.QuoteString() + " : " + field.Value);
}
}
else
{
state.Append("(" + field.Key + ") : " + field.Value);
}
}
if (expr.Generator != null)
{
state.Append(" foreach ");
state.Append(expr.Generator.ToString());
}
state.Append(" }");
return(Empty.Value);
}
public Empty Visit(DekiScriptMap expr, StringBuilder state)
{
state.Append("{");
// convert values to an array so they can be sorted
var values = new List <KeyValuePair <string, DekiScriptLiteral> >();
foreach (KeyValuePair <string, DekiScriptLiteral> entry in expr.Value)
{
values.Add(entry);
}
values.Sort((left, right) => left.Key.CompareInvariantIgnoreCase(right.Key));
// emit values
bool first = true;
foreach (KeyValuePair <string, DekiScriptLiteral> entry in values)
{
if (!first)
{
state.Append(", ");
}
else
{
state.Append(" ");
}
first = false;
if (DekiScriptParser.IsIdentifier(entry.Key) || DekiScriptParser.IsNumber(entry.Key))
{
state.Append(entry.Key);
}
else
{
state.Append(entry.Key.QuoteString());
}
state.Append(" : ");
entry.Value.VisitWith(this, state);
}
state.Append(" }");
return(Empty.Value);
}
//--- Class Methods ---
public static void StartExtensionService(DekiContext context, ServiceBE service, ServiceRepository.IServiceInfo serviceInfo, bool forceRefresh)
{
// retrieve document describing the extension functions
XUri uri = new XUri(service.Uri);
XDoc manifest = null;
DekiWikiService deki = context.Deki;
var extension = serviceInfo.Extension;
if (!service.ServiceLocal)
{
lock (deki.RemoteExtensionLibraries) {
deki.RemoteExtensionLibraries.TryGetValue(uri, out manifest);
}
}
if (manifest == null || forceRefresh)
{
manifest = Plug.New(uri).Get().ToDocument();
// normalize the extension XML
manifest = manifest.TransformAsXml(_extensionConverterXslt);
// check if document describes a valid extension: either the extension has no functions, or the functions have end-points
if (manifest.HasName("extension") && ((manifest["function"].ListLength == 0) || (manifest["function/uri"].ListLength > 0)))
{
// add source uri for service
manifest.Attr("uri", uri);
// register service in extension list
lock (deki.RemoteExtensionLibraries) {
deki.RemoteExtensionLibraries[uri] = manifest;
}
}
else
{
throw new ExtensionRemoveServiceInvalidOperationException(uri);
}
}
extension.Manifest = manifest;
// add function prefix if one is defined
serviceInfo.Extension.SetPreference("namespace.custom", service.Preferences["namespace"]);
string serviceNamespace = service.Preferences["namespace"] ?? manifest["namespace"].AsText;
if (serviceNamespace != null)
{
serviceNamespace = serviceNamespace.Trim();
if (string.IsNullOrEmpty(serviceInfo.Namespace))
{
// Note (arnec): Namespace from preferences is assigned at service creation. If we do not have one at this
// point, it came from the extension manifest and needs to be registered as our default. Otherwise the
// preference override persists as the namespace.
context.Instance.RunningServices.RegisterNamespace(serviceInfo, serviceNamespace);
}
if (serviceNamespace.Length != 0)
{
if (!DekiScriptParser.IsIdentifier(serviceNamespace))
{
throw new ExtensionNamespaceInvalidArgumentException(service.Preferences["namespace"] ?? manifest["namespace"].AsText);
}
}
else
{
serviceNamespace = null;
}
}
serviceNamespace = (serviceNamespace == null) ? string.Empty : (serviceNamespace + ".");
// add custom library title
extension.SetPreference("title.custom", service.Preferences["title"]);
extension.SetPreference("label.custom", service.Preferences["label"]);
extension.SetPreference("description.custom", service.Preferences["description"]);
extension.SetPreference("uri.logo.custom", service.Preferences["uri.logo"]);
extension.SetPreference("functions", service.Preferences["functions"]);
extension.SetPreference("protected", service.Preferences["protected"]);
// add each extension function
bool.TryParse(service.Preferences["protected"], out extension.IsProtected);
var functions = new List <ServiceRepository.ExtensionFunctionInfo>();
foreach (XDoc function in manifest["function"])
{
XUri functionUri = function["uri"].AsUri;
if (functionUri != null)
{
functions.Add(new ServiceRepository.ExtensionFunctionInfo(serviceNamespace + function["name"].Contents, functionUri));
}
}
extension.Functions = functions.ToArray();
}