本文整理汇总了C#中JToken.IsNull方法的典型用法代码示例。如果您正苦于以下问题：C# JToken.IsNull方法的具体用法？C# JToken.IsNull怎么用？C# JToken.IsNull使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类JToken的用法示例。
在下文中一共展示了JToken.IsNull方法的4个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: ValidateTypeValue
/// <summary>Throws an exception if the given value is not a valid @type value.</summary>
/// <remarks>Throws an exception if the given value is not a valid @type value.</remarks>
/// <param name="v">the value to check.</param>
/// <exception cref="JsonLdError">JsonLdError</exception>
/// <exception cref="JsonLD.Core.JsonLdError"></exception>
internal static bool ValidateTypeValue(JToken v)
{
if (v.IsNull())
{
throw new ArgumentNullException("\"@type\" value cannot be null");
}
// must be a string, subject reference, or empty object
if (v.Type == JTokenType.String || (v is JObject && (((JObject)v).ContainsKey
("@id") || ((JArray)v).Count == 0)))
{
return true;
}
// must be an array
bool isValid = false;
if (v is JArray)
{
isValid = true;
foreach (JToken i in (JArray)v)
{
if (!(i.Type == JTokenType.String || i is JObject && ((JObject)i).ContainsKey
("@id")))
{
isValid = false;
break;
}
}
}
if (!isValid)
{
throw new JsonLdError(JsonLdError.Error.SyntaxError);
}
return true;
}示例2: Expand
/// <summary>
/// Expansion Algorithm
/// http://json-ld.org/spec/latest/json-ld-api/#expansion-algorithm
/// </summary>
/// <param name="activeCtx"></param>
/// <param name="activeProperty"></param>
/// <param name="element"></param>
/// <returns></returns>
/// <exception cref="JsonLdError">JsonLdError</exception>
/// <exception cref="JsonLD.Core.JsonLdError"></exception>
public virtual JToken Expand(Context activeCtx, string activeProperty, JToken element
)
{
// 1)
if (element.IsNull())
{
return null;
}
// 3)
if (element is JArray)
{
// 3.1)
JArray result = new JArray();
// 3.2)
foreach (JToken item in (JArray)element)
{
// 3.2.1)
JToken v = Expand(activeCtx, activeProperty, item);
// 3.2.2)
if (("@list".Equals(activeProperty) || "@list".Equals(activeCtx.GetContainer(activeProperty
))) && (v is JArray || (v is JObject && ((IDictionary<string, JToken>)v).ContainsKey
("@list"))))
{
throw new JsonLdError(JsonLdError.Error.ListOfLists, "lists of lists are not permitted."
);
}
else
{
// 3.2.3)
if (!v.IsNull())
{
if (v is JArray)
{
JsonLD.Collections.AddAll(result, (JArray)v);
}
else
{
result.Add(v);
}
}
}
}
// 3.3)
return result;
}
else
{
// 4)
if (element is JObject)
{
// access helper
IDictionary<string, JToken> elem = (JObject)element;
// 5)
if (elem.ContainsKey("@context"))
{
activeCtx = activeCtx.Parse(elem["@context"]);
}
// 6)
JObject result = new JObject();
// 7)
JArray keys = new JArray(element.GetKeys());
keys.SortInPlace();
foreach (string key in keys)
{
JToken value = elem[key];
// 7.1)
if (key.Equals("@context"))
{
continue;
}
// 7.2)
string expandedProperty = activeCtx.ExpandIri(key, false, true, null, null);
JToken expandedValue = null;
// 7.3)
if (expandedProperty == null || (!expandedProperty.Contains(":") && !JsonLdUtils.IsKeyword
(expandedProperty)))
{
continue;
}
// 7.4)
if (JsonLdUtils.IsKeyword(expandedProperty))
{
// 7.4.1)
if ("@reverse".Equals(activeProperty))
{
throw new JsonLdError(JsonLdError.Error.InvalidReversePropertyMap, "a keyword cannot be used as a @reverse propery"
);
}
// 7.4.2)
if (result.ContainsKey(expandedProperty))
//.........这里部分代码省略.........
示例3: RemoveBase
public static string RemoveBase(JToken baseobj, string iri)
{
if (baseobj.IsNull())
{
return iri;
}
URL @base;
if (baseobj.Type == JTokenType.String)
{
@base = URL.Parse((string)baseobj);
}
else
{
throw new Exception("Arrgggghhh!");
//@base = (URL)baseobj;
}
// establish base root
string root = string.Empty;
if (!string.Empty.Equals(@base.href))
{
root += (@base.protocol) + "//" + @base.authority;
}
else
{
// support network-path reference with empty base
if (iri.IndexOf("//") != 0)
{
root += "//";
}
}
// IRI not relative to base
if (iri.IndexOf(root) != 0)
{
return iri;
}
// remove root from IRI and parse remainder
URL rel = URL.Parse(JsonLD.JavaCompat.Substring(iri, root.Length));
// remove path segments that match
IList<string> baseSegments = new List<string>(System.Linq.Enumerable.ToList(@base
.normalizedPath.Split("/")));
baseSegments = baseSegments.Where(seg => seg != "").ToList();
if (@base.normalizedPath.EndsWith("/"))
{
baseSegments.Add(string.Empty);
}
IList<string> iriSegments = new List<string>(System.Linq.Enumerable.ToList(rel.normalizedPath
.Split("/")));
iriSegments = iriSegments.Where(seg => seg != "").ToList();
if (rel.normalizedPath.EndsWith("/"))
{
iriSegments.Add(string.Empty);
}
while (baseSegments.Count > 0 && iriSegments.Count > 0)
{
if (!baseSegments[0].Equals(iriSegments[0]))
{
break;
}
if (baseSegments.Count > 0)
{
baseSegments.RemoveAt(0);
}
if (iriSegments.Count > 0)
{
iriSegments.RemoveAt(0);
}
}
// use '../' for each non-matching base segment
string rval = string.Empty;
if (baseSegments.Count > 0)
{
// don't count the last segment if it isn't a path (doesn't end in
// '/')
// don't count empty first segment, it means base began with '/'
if ([email protected]("/") || string.Empty.Equals(baseSegments[0]))
{
baseSegments.RemoveAt(baseSegments.Count - 1);
}
for (int i = 0; i < baseSegments.Count; ++i)
{
rval += "../";
}
}
// prepend remaining segments
if (iriSegments.Count > 0)
{
rval += iriSegments[0];
}
for (int i_1 = 1; i_1 < iriSegments.Count; i_1++)
{
rval += "/" + iriSegments[i_1];
}
// add query and hash
if (!string.Empty.Equals(rel.query))
{
rval += "?" + rel.query;
}
if (!string.Empty.Equals(rel.hash))
{
rval += rel.hash;
//.........这里部分代码省略.........
示例4: GenerateNodeMap
/// <exception cref="JsonLD.Core.JsonLdError"></exception>
internal virtual void GenerateNodeMap(JToken element, JObject
nodeMap, string activeGraph, JToken activeSubject, string activeProperty, JObject list)
{
// 1)
if (element is JArray)
{
// 1.1)
foreach (JToken item in (JArray)element)
{
GenerateNodeMap(item, nodeMap, activeGraph, activeSubject, activeProperty, list);
}
return;
}
// for convenience
IDictionary<string, JToken> elem = (IDictionary<string, JToken>)element;
// 2)
if (!((IDictionary<string,JToken>)nodeMap).ContainsKey(activeGraph))
{
nodeMap[activeGraph] = new JObject();
}
JObject graph = (JObject)nodeMap[activeGraph
];
JObject node = (JObject)((activeSubject.IsNull() || activeSubject.Type != JTokenType.String)
? null : graph[(string)activeSubject]);
// 3)
if (elem.ContainsKey("@type"))
{
// 3.1)
JArray oldTypes;
JArray newTypes = new JArray();
if (elem["@type"] is JArray)
{
oldTypes = (JArray)elem["@type"];
}
else
{
oldTypes = new JArray();
oldTypes.Add((string)elem["@type"]);
}
foreach (string item in oldTypes)
{
if (item.StartsWith("_:"))
{
newTypes.Add(GenerateBlankNodeIdentifier(item));
}
else
{
newTypes.Add(item);
}
}
if (elem["@type"] is JArray)
{
elem["@type"] = newTypes;
}
else
{
elem["@type"] = newTypes[0];
}
}
// 4)
if (elem.ContainsKey("@value"))
{
// 4.1)
if (list == null)
{
JsonLdUtils.MergeValue(node, activeProperty, (JObject)elem);
}
else
{
// 4.2)
JsonLdUtils.MergeValue(list, "@list", (JObject)elem);
}
}
else
{
// 5)
if (elem.ContainsKey("@list"))
{
// 5.1)
JObject result = new JObject();
result["@list"] = new JArray();
// 5.2)
//for (final Object item : (List<Object>) elem.get("@list")) {
// generateNodeMap(item, nodeMap, activeGraph, activeSubject, activeProperty, result);
//}
GenerateNodeMap(elem["@list"], nodeMap, activeGraph, activeSubject, activeProperty
, result);
// 5.3)
JsonLdUtils.MergeValue(node, activeProperty, result);
}
else
{
// 6)
// 6.1)
string id = (string)JsonLD.Collections.Remove(elem, "@id");
if (id != null)
{
if (id.StartsWith("_:"))
{
//.........这里部分代码省略.........