public static CosmosElement Dispatch(
IJsonNavigator jsonNavigator,
IJsonNavigatorNode jsonNavigatorNode)
{
JsonNodeType jsonNodeType = jsonNavigator.GetNodeType(jsonNavigatorNode);
return(jsonNodeType switch
{
JsonNodeType.Null => CosmosNull.Create(),
JsonNodeType.False => CosmosBoolean.Create(false),
JsonNodeType.True => CosmosBoolean.Create(true),
JsonNodeType.Number64 => CosmosNumber64.Create(jsonNavigator, jsonNavigatorNode),
JsonNodeType.FieldName => CosmosString.Create(jsonNavigator, jsonNavigatorNode),
JsonNodeType.String => CosmosString.Create(jsonNavigator, jsonNavigatorNode),
JsonNodeType.Array => CosmosArray.Create(jsonNavigator, jsonNavigatorNode),
JsonNodeType.Object => CosmosObject.Create(jsonNavigator, jsonNavigatorNode),
JsonNodeType.Int8 => CosmosInt8.Create(jsonNavigator, jsonNavigatorNode),
JsonNodeType.Int16 => CosmosInt16.Create(jsonNavigator, jsonNavigatorNode),
JsonNodeType.Int32 => CosmosInt32.Create(jsonNavigator, jsonNavigatorNode),
JsonNodeType.Int64 => CosmosInt64.Create(jsonNavigator, jsonNavigatorNode),
JsonNodeType.UInt32 => CosmosUInt32.Create(jsonNavigator, jsonNavigatorNode),
JsonNodeType.Float32 => CosmosFloat32.Create(jsonNavigator, jsonNavigatorNode),
JsonNodeType.Float64 => CosmosFloat64.Create(jsonNavigator, jsonNavigatorNode),
JsonNodeType.Guid => CosmosGuid.Create(jsonNavigator, jsonNavigatorNode),
JsonNodeType.Binary => CosmosBinary.Create(jsonNavigator, jsonNavigatorNode),
_ => throw new ArgumentException($"Unknown {nameof(JsonNodeType)}: {jsonNodeType}")
});
public JsonNode GetAttribute(string attributeName, bool forceCreate = false)
{
if (_childs == null && attributeName == null || attributeName.Length <= 0)
{
return(null);
}
JsonNode result = null;
if (_nodeType == JsonNodeType.Object)
{
result = FindChildNode(attributeName);
}
if (forceCreate && result == null)
{
if (_nodeType != JsonNodeType.Object)
{
ReleaseData();
_nodeType = JsonNodeType.Object;
}
result = new JsonNode();
result.Name = attributeName;
if (_childs == null)
{
_childs = new List <JsonNode>();
}
_childs.Add(result);
}
return(result);
}
/// <summary>
/// Constructor.
/// </summary>
/// <param name="nodeType">The type of the node read.</param>
/// <param name="value">The value of the node.</param>
internal BufferedNode(JsonNodeType nodeType, object value)
{
this.nodeType = nodeType;
this.nodeValue = value;
this.Previous = this;
this.Next = this;
}
private static void ValidateNodeType(this JsonReader jsonReader, JsonNodeType expectedNodeType)
{
if (jsonReader.NodeType != expectedNodeType)
{
throw CreateException(Strings.JsonReaderExtensions_UnexpectedNodeDetected(expectedNodeType, jsonReader.NodeType));
}
}
private static ReadOnlyMemory <byte> GetNodeOfType(
JsonNodeType expected,
IJsonNavigatorNode node)
{
if (node == null)
{
throw new ArgumentNullException(nameof(node));
}
if (!(node is BinaryNavigatorNode binaryNavigatorNode))
{
throw new ArgumentException($"{nameof(node)} must be a {nameof(BinaryNavigatorNode)}");
}
ReadOnlyMemory <byte> buffer = binaryNavigatorNode.Buffer;
if (buffer.Length == 0)
{
throw new ArgumentException($"Node must not be empty.");
}
JsonNodeType actual = NodeTypes.GetNodeType(buffer.Span[0]);
if (actual != expected)
{
throw new ArgumentException($"Node needs to be of type {expected}.");
}
return(buffer);
}
public LazyCosmosObject(IJsonNavigator jsonNavigator, IJsonNavigatorNode jsonNavigatorNode)
{
JsonNodeType type = jsonNavigator.GetNodeType(jsonNavigatorNode);
if (type != JsonNodeType.Object)
{
throw new ArgumentOutOfRangeException($"{nameof(jsonNavigatorNode)} must be a {JsonNodeType.Object} node. Got {type} instead.");
}
this.jsonNavigator = jsonNavigator;
this.jsonNavigatorNode = jsonNavigatorNode;
this.lazyCache = new Lazy <Dictionary <string, CosmosElement> >(() =>
{
int propertyCount = this.jsonNavigator.GetObjectPropertyCount(this.jsonNavigatorNode);
Dictionary <string, CosmosElement> cache = new Dictionary <string, CosmosElement>(capacity: propertyCount);
foreach (ObjectProperty objectProperty in this.jsonNavigator.GetObjectProperties(this.jsonNavigatorNode))
{
string key = this.jsonNavigator.GetStringValue(objectProperty.NameNode);
CosmosElement value = CosmosElement.Dispatch(this.jsonNavigator, objectProperty.ValueNode);
cache[key] = value;
}
return(cache);
});
}
public LazyCosmosString(IJsonNavigator jsonNavigator, IJsonNavigatorNode jsonNavigatorNode)
{
if (jsonNavigator == null)
{
throw new ArgumentNullException($"{nameof(jsonNavigator)}");
}
if (jsonNavigatorNode == null)
{
throw new ArgumentNullException($"{nameof(jsonNavigatorNode)}");
}
JsonNodeType type = jsonNavigator.GetNodeType(jsonNavigatorNode);
if (type != JsonNodeType.String)
{
throw new ArgumentOutOfRangeException($"{nameof(jsonNavigatorNode)} must be a {JsonNodeType.String} node. Got {type} instead.");
}
this.jsonNavigator = jsonNavigator;
this.jsonNavigatorNode = jsonNavigatorNode;
this.lazyString = new Lazy <string>(() =>
{
return(this.jsonNavigator.GetStringValue(this.jsonNavigatorNode));
});
}
private bool TryReadString(out object value, out JsonNodeType nodeType)
{
var sb = new StringBuilder(38); // Large enough to read a DateTime or Guid.
while (true)
{
var read = ReadCurrent();
switch (read)
{
case '"':
value = sb.ToString();
nodeType = JsonNodeType.String;
return(true);
case '\\':
sb.Append(ReadEscapedChar());
break;
case -1:
value = sb.Insert(0, '"').ToString();
nodeType = JsonNodeType.Invalid;
return(false);
default:
sb.Append((char)read);
break;
}
}
}
public LazyCosmosNumber64(
IJsonNavigator jsonNavigator,
IJsonNavigatorNode jsonNavigatorNode)
{
if (jsonNavigator == null)
{
throw new ArgumentNullException($"{nameof(jsonNavigator)}");
}
if (jsonNavigatorNode == null)
{
throw new ArgumentNullException($"{nameof(jsonNavigatorNode)}");
}
JsonNodeType type = jsonNavigator.GetNodeType(jsonNavigatorNode);
if (type != JsonNodeType.Number)
{
throw new ArgumentOutOfRangeException($"{nameof(jsonNavigatorNode)} must be a {JsonNodeType.Number} node. Got {type} instead.");
}
this.jsonNavigator = jsonNavigator;
this.jsonNavigatorNode = jsonNavigatorNode;
this.lazyNumber = new Lazy <double>(() =>
{
return(this.jsonNavigator.GetNumberValue(this.jsonNavigatorNode));
});
}
public LazyCosmosArray(
IJsonNavigator jsonNavigator,
IJsonNavigatorNode jsonNavigatorNode)
{
JsonNodeType type = jsonNavigator.GetNodeType(jsonNavigatorNode);
if (type != JsonNodeType.Array)
{
throw new ArgumentOutOfRangeException($"{nameof(jsonNavigatorNode)} must be an {JsonNodeType.Array} node. Got {type} instead.");
}
this.jsonNavigator = jsonNavigator;
this.jsonNavigatorNode = jsonNavigatorNode;
this.lazyCosmosElementArray = new Lazy <Lazy <CosmosElement>[]>(() =>
{
Lazy <CosmosElement>[] lazyArray = new Lazy <CosmosElement> [this.jsonNavigator.GetArrayItemCount(this.jsonNavigatorNode)];
int index = 0;
// Using foreach instead of indexer, since the navigator doesn't support random seeks efficiently.
foreach (IJsonNavigatorNode arrayItem in this.jsonNavigator.GetArrayItems(this.jsonNavigatorNode))
{
lazyArray[index] = new Lazy <CosmosElement>(() => CosmosElement.Dispatch(this.jsonNavigator, arrayItem));
index++;
}
return(lazyArray);
});
}
public LazyCosmosBinary(
IJsonNavigator jsonNavigator,
IJsonNavigatorNode jsonNavigatorNode)
{
JsonNodeType type = jsonNavigator.GetNodeType(jsonNavigatorNode);
if (type != JsonNodeType.Binary)
{
throw new ArgumentOutOfRangeException($"{nameof(jsonNavigatorNode)} must be a {JsonNodeType.Binary} node. Got {type} instead.");
}
this.jsonNavigator = jsonNavigator;
this.jsonNavigatorNode = jsonNavigatorNode;
this.lazyBytes = new Lazy <ReadOnlyMemory <byte> >(() =>
{
if (!this.jsonNavigator.TryGetBufferedBinaryValue(
this.jsonNavigatorNode,
out ReadOnlyMemory <byte> bufferedBinaryValue))
{
bufferedBinaryValue = this.jsonNavigator.GetBinaryValue(
this.jsonNavigatorNode);
}
return(bufferedBinaryValue);
});
}
void CheckAdd(JsonNodeType type)
{
// can add anything to object type
if (Type == JsonNodeType.Object)
{
return;
}
switch (type)
{
case JsonNodeType.Object:
case JsonNodeType.Value:
// can add value to array
if (Type == JsonNodeType.Array)
{
return;
}
// can add value to value container
if (Type == JsonNodeType.Value)
{
return;
}
break;
}
throw new ArgumentException(string.Format("Cannot add item of type {0} to an JsonObject of type {1}!", type, Type));
}
public BinaryNavigatorNode(
ReadOnlyMemory <byte> buffer,
JsonNodeType jsonNodeType)
{
this.Buffer = buffer;
this.JsonNodeType = jsonNodeType;
}
public LazyCosmosBinary(IJsonNavigator jsonNavigator, IJsonNavigatorNode jsonNavigatorNode)
{
if (jsonNavigator == null)
{
throw new ArgumentNullException($"{nameof(jsonNavigator)}");
}
if (jsonNavigatorNode == null)
{
throw new ArgumentNullException($"{nameof(jsonNavigatorNode)}");
}
JsonNodeType type = jsonNavigator.GetNodeType(jsonNavigatorNode);
if (type != JsonNodeType.Binary)
{
throw new ArgumentOutOfRangeException($"{nameof(jsonNavigatorNode)} must be a {JsonNodeType.Binary} node. Got {type} instead.");
}
this.jsonNavigator = jsonNavigator;
this.jsonNavigatorNode = jsonNavigatorNode;
this.lazyBytes = new Lazy <IReadOnlyList <byte> >(() =>
{
return(this.jsonNavigator.GetBinaryValue(this.jsonNavigatorNode));
});
}
/// <summary>
/// Reads the next node from the <paramref name="jsonReader"/> and verifies that it is of the expected node type.
/// </summary>
/// <param name="jsonReader">The <see cref="JsonReader"/> to read from.</param>
/// <param name="expectedNodeType">The expected <see cref="JsonNodeType"/> of the read node.</param>
private static void ReadNext(this JsonReader jsonReader, JsonNodeType expectedNodeType)
{
Debug.Assert(jsonReader != null, "jsonReader != null");
Debug.Assert(expectedNodeType != JsonNodeType.None, "expectedNodeType != JsonNodeType.None");
jsonReader.ValidateNodeType(expectedNodeType);
jsonReader.Read();
}
public bool Read(JsonNodeType nodeType)
{
// validate node type
this.Validate(NodeType);
// read
return(this.Read());
}
void Check2(
JsonNode n,
bool isNull, bool isArray, bool isObject, bool isValue, JsonNodeType valueType,
bool valueBoolean, int valueInt32, long valueInt64, double valueNumber, string valueString)
{
CheckInternal(n, isNull, isArray, isObject, isValue, valueType, valueBoolean, valueInt32, valueInt64, valueNumber, valueString);
CheckInternal(n.AsString, isNull, isArray, isObject, isValue, JsonNodeType.String, valueBoolean, valueInt32, valueInt64, valueNumber, valueString);
}
/// <summary>
/// Determines if the reader is on a value node.
/// </summary>
/// <param name="jsonReader">The reader to inspect.</param>
/// <returns>true if the reader is on PrimitiveValue, StartObject or StartArray node, false otherwise.</returns>
internal static bool IsOnValueNode(this JsonReader jsonReader)
{
DebugUtils.CheckNoExternalCallers();
JsonNodeType nodeType = jsonReader.NodeType;
return(nodeType == JsonNodeType.PrimitiveValue || nodeType == JsonNodeType.StartObject || nodeType == JsonNodeType.StartArray);
}
private void Nest(JsonNodeType type)
{
Nesting.Push(new JsonWriterState(type));
if (0 != Settings.Indent.Length)
{
Indent += Settings.Indent;
}
}
/// <summary>
/// Asynchronously reads the next node from the <paramref name="jsonReader"/> and verifies that it is of the expected node type.
/// </summary>
/// <param name="jsonReader">The <see cref="JsonReader"/> to read from.</param>
/// <param name="expectedNodeType">The expected <see cref="JsonNodeType"/> of the read node.</param>
private static async Task ReadNextAsync(this IJsonReaderAsync jsonReader, JsonNodeType expectedNodeType)
{
Debug.Assert(jsonReader != null, "jsonReader != null");
Debug.Assert(expectedNodeType != JsonNodeType.None, "expectedNodeType != JsonNodeType.None");
jsonReader.ValidateNodeType(expectedNodeType);
await jsonReader.ReadAsync().ConfigureAwait(false);
}
public void SetNullValue()
{
if (_nodeType != JsonNodeType.NullValue)
{
ReleaseData();
_nodeType = JsonNodeType.NullValue;
}
}
private JsonNodeType ExitScope()
{
JsonNodeType jsonNodeType = scopes[depth];
scopes[depth] = JsonNodeType.None;
--depth;
return(jsonNodeType);
}
private bool EndOfInput()
{
if (this.scopes.Count > 1)
{
throw JsonReaderExtensions.CreateException(Strings.JsonReader_EndOfInputWithOpenScope);
}
this.nodeType = JsonNodeType.EndOfInput;
return(false);
}
public void SetNumberValue(double value)
{
if (_nodeType != JsonNodeType.NumberValue)
{
ReleaseData();
_nodeType = JsonNodeType.NumberValue;
}
_doubleValue = value;
}
public void SetObjectValue(JsonNode objNode)
{
if (_nodeType != JsonNodeType.ObjectValue)
{
ReleaseData();
_nodeType = JsonNodeType.ObjectValue;
}
_objectValue = objNode;
}
public void SetBoolValue(bool value)
{
if (_nodeType != JsonNodeType.BooleanValue)
{
ReleaseData();
_nodeType = JsonNodeType.BooleanValue;
}
_longValue = (value) ? 1 : 0;
}
public void SetStringValue(string value)
{
if (_nodeType != JsonNodeType.StringValue)
{
ReleaseData();
_nodeType = JsonNodeType.StringValue;
}
_stringValue = value;
}
/// <summary>
/// Converts this node to an array.
/// </summary>
internal void ConvertToArray()
{
if ((content != null) || (Type != JsonNodeType.Object))
{
throw new InvalidDataException(string.Format("Cannot convert type {0} to array!", Type));
}
Type = JsonNodeType.Array;
}
private bool EndOfInput()
{
if (this.scopes.Count > 1)
{
throw JsonReaderExtensions.CreateException(Strings.JsonReader_EndOfInputWithOpenScope);
}
this.nodeType = JsonNodeType.EndOfInput;
return false;
}
public bool Read()
{
switch (callCount)
{
case 0:
value = null;
nodeType = JsonNodeType.StartObject;
break;
case 1:
value = "@context";
nodeType = JsonNodeType.Property;
break;
case 2:
value = "http://test/$metadata#People/$entity";
nodeType = JsonNodeType.PrimitiveValue;
break;
case 3:
value = "PersonId";
nodeType = JsonNodeType.Property;
break;
case 4:
value = 999;
nodeType = JsonNodeType.PrimitiveValue;
break;
case 5:
value = "Name";
nodeType = JsonNodeType.Property;
break;
case 6:
value = "Jack";
nodeType = JsonNodeType.PrimitiveValue;
break;
case 7:
value = null;
nodeType = JsonNodeType.EndObject;
break;
case 8:
value = null;
nodeType = JsonNodeType.EndOfInput;
return(false);
default:
return(false);
}
++callCount;
return(true);
}
/// <summary>
/// Validates that the reader is positioned on the specified node type.
/// </summary>
/// <param name="jsonReader">The <see cref="JsonReader"/> to use.</param>
/// <param name="expectedNodeType">The expected node type.</param>
private static void ValidateNodeType(this JsonReader jsonReader, JsonNodeType expectedNodeType)
{
Debug.Assert(jsonReader != null, "jsonReader != null");
Debug.Assert(expectedNodeType != JsonNodeType.None, "expectedNodeType != JsonNodeType.None");
if (jsonReader.NodeType != expectedNodeType)
{
throw CreateException(Strings.JsonReaderExtensions_UnexpectedNodeDetected(expectedNodeType, jsonReader.NodeType));
}
}
private void CheckText(JsonNodeType nextNodeType)
{
if (this.IsClosed)
{
ThrowClosed();
}
if (this.depth == 0)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new InvalidOperationException(System.Runtime.Serialization.SR.GetString("XmlIllegalOutsideRoot")));
}
if ((nextNodeType == JsonNodeType.StandaloneText) && (this.nodeType == JsonNodeType.QuotedText))
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new XmlException(System.Runtime.Serialization.SR.GetString("JsonCannotWriteStandaloneTextAfterQuotedText")));
}
}
private void CheckText(JsonNodeType nextNodeType)
{
if (IsClosed)
{
ThrowClosed();
}
if (_depth == 0)
{
throw new InvalidOperationException(SR.XmlIllegalOutsideRoot);
}
if ((nextNodeType == JsonNodeType.StandaloneText) &&
(_nodeType == JsonNodeType.QuotedText))
{
throw new XmlException(SR.JsonCannotWriteStandaloneTextAfterQuotedText);
}
}
internal JsonWriterState(JsonNodeType parent)
{
Parent = parent;
}
/// <summary>
/// Reads the next node from the <paramref name="jsonReader"/> and verifies that it is of the expected node type.
/// </summary>
/// <param name="jsonReader">The <see cref="JsonReader"/> to read from.</param>
/// <param name="expectedNodeType">The expected <see cref="JsonNodeType"/> of the read node.</param>
private static void ReadNext(this JsonReader jsonReader, JsonNodeType expectedNodeType)
{
Debug.Assert(jsonReader != null, "jsonReader != null");
Debug.Assert(expectedNodeType != JsonNodeType.None, "expectedNodeType != JsonNodeType.None");
jsonReader.ValidateNodeType(expectedNodeType);
jsonReader.Read();
}
public virtual bool Read()
{
this.nodeValue = null;
if (!this.SkipWhitespaces())
{
return this.EndOfInput();
}
Scope scope = this.scopes.Peek();
bool flag = false;
if (this.characterBuffer[this.tokenStartIndex] == ',')
{
flag = true;
this.tokenStartIndex++;
if (!this.SkipWhitespaces())
{
return this.EndOfInput();
}
}
switch (scope.Type)
{
case ScopeType.Root:
if (flag)
{
throw JsonReaderExtensions.CreateException(Strings.JsonReader_UnexpectedComma(ScopeType.Root));
}
if (scope.ValueCount > 0)
{
throw JsonReaderExtensions.CreateException(Strings.JsonReader_MultipleTopLevelValues);
}
this.nodeType = this.ParseValue();
break;
case ScopeType.Array:
if (flag && (scope.ValueCount == 0))
{
throw JsonReaderExtensions.CreateException(Strings.JsonReader_UnexpectedComma(ScopeType.Array));
}
if (this.characterBuffer[this.tokenStartIndex] == ']')
{
this.tokenStartIndex++;
if (flag)
{
throw JsonReaderExtensions.CreateException(Strings.JsonReader_UnexpectedComma(ScopeType.Array));
}
this.PopScope();
this.nodeType = JsonNodeType.EndArray;
}
else
{
if (!flag && (scope.ValueCount > 0))
{
throw JsonReaderExtensions.CreateException(Strings.JsonReader_MissingComma(ScopeType.Array));
}
this.nodeType = this.ParseValue();
}
break;
case ScopeType.Object:
if (flag && (scope.ValueCount == 0))
{
throw JsonReaderExtensions.CreateException(Strings.JsonReader_UnexpectedComma(ScopeType.Object));
}
if (this.characterBuffer[this.tokenStartIndex] == '}')
{
this.tokenStartIndex++;
if (flag)
{
throw JsonReaderExtensions.CreateException(Strings.JsonReader_UnexpectedComma(ScopeType.Object));
}
this.PopScope();
this.nodeType = JsonNodeType.EndObject;
}
else
{
if (!flag && (scope.ValueCount > 0))
{
throw JsonReaderExtensions.CreateException(Strings.JsonReader_MissingComma(ScopeType.Object));
}
this.nodeType = this.ParseProperty();
}
break;
case ScopeType.Property:
if (flag)
{
throw JsonReaderExtensions.CreateException(Strings.JsonReader_UnexpectedComma(ScopeType.Property));
}
this.nodeType = this.ParseValue();
break;
default:
throw JsonReaderExtensions.CreateException(Strings.General_InternalError(InternalErrorCodes.JsonReader_Read));
}
return true;
}
void EnterJsonScope(JsonNodeType currentNodeType)
{
scopeDepth++;
if (scopes == null)
{
scopes = new JsonNodeType[4];
}
else if (scopes.Length == scopeDepth)
{
JsonNodeType[] newScopes = new JsonNodeType[scopeDepth * 2];
Array.Copy(scopes, newScopes, scopeDepth);
scopes = newScopes;
}
scopes[scopeDepth] = currentNodeType;
}
private void StartText()
{
if (HasOpenAttribute)
{
throw new InvalidOperationException(SR.JsonMustUseWriteStringForWritingAttributeValues);
}
if ((_dataType == JsonDataType.None) && (_serverTypeValue != null))
{
throw new XmlException(SR.Format(SR.JsonMustSpecifyDataType, JsonGlobals.typeString, JsonGlobals.objectString, JsonGlobals.serverTypeString));
}
if (IsWritingNameWithMapping && !WrittenNameWithMapping)
{
// Don't write out any text content unless the local name has been written.
// Not providing a better error message because localization deadline has passed.
throw new XmlException(SR.Format(SR.JsonMustSpecifyDataType, JsonGlobals.itemString, string.Empty, JsonGlobals.itemString));
}
if ((_dataType == JsonDataType.String) ||
(_dataType == JsonDataType.None))
{
CheckText(JsonNodeType.QuotedText);
if (_nodeType != JsonNodeType.QuotedText)
{
WriteJsonQuote();
}
_nodeType = JsonNodeType.QuotedText;
}
else if ((_dataType == JsonDataType.Number) ||
(_dataType == JsonDataType.Boolean))
{
CheckText(JsonNodeType.StandaloneText);
_nodeType = JsonNodeType.StandaloneText;
}
else
{
ThrowInvalidAttributeContent();
}
}
public override void WriteStartElement(string prefix, string localName, string ns)
{
if (localName == null)
{
throw new ArgumentNullException(nameof(localName));
}
if (localName.Length == 0)
{
throw new ArgumentException(SR.JsonInvalidLocalNameEmpty, nameof(localName));
}
if (!string.IsNullOrEmpty(prefix))
{
if (string.IsNullOrEmpty(ns) || !TrySetWritingNameWithMapping(localName, ns))
{
throw new ArgumentException(SR.Format(SR.JsonPrefixMustBeNullOrEmpty, prefix), nameof(prefix));
}
}
if (!string.IsNullOrEmpty(ns))
{
if (!TrySetWritingNameWithMapping(localName, ns))
{
throw new ArgumentException(SR.Format(SR.JsonNamespaceMustBeEmpty, ns), nameof(ns));
}
}
if (IsClosed)
{
ThrowClosed();
}
if (HasOpenAttribute)
{
throw new XmlException(SR.Format(SR.JsonOpenAttributeMustBeClosedFirst, "WriteStartElement"));
}
if ((_nodeType != JsonNodeType.None) && _depth == 0)
{
throw new XmlException(SR.JsonMultipleRootElementsNotAllowedOnWriter);
}
switch (_nodeType)
{
case JsonNodeType.None:
{
if (!localName.Equals(JsonGlobals.rootString))
{
throw new XmlException(SR.Format(SR.JsonInvalidRootElementName, localName, JsonGlobals.rootString));
}
EnterScope(JsonNodeType.Element);
break;
}
case JsonNodeType.Element:
{
if ((_dataType != JsonDataType.Array) && (_dataType != JsonDataType.Object))
{
throw new XmlException(SR.JsonNodeTypeArrayOrObjectNotSpecified);
}
if (_indent)
{
WriteNewLine();
WriteIndent();
}
if (!IsWritingCollection)
{
if (_nameState != NameState.IsWritingNameWithMapping)
{
WriteJsonElementName(localName);
}
}
else if (!localName.Equals(JsonGlobals.itemString))
{
throw new XmlException(SR.Format(SR.JsonInvalidItemNameForArrayElement, localName, JsonGlobals.itemString));
}
EnterScope(JsonNodeType.Element);
break;
}
case JsonNodeType.EndElement:
{
if (_endElementBuffer)
{
_nodeWriter.WriteText(JsonGlobals.MemberSeparatorChar);
}
if (_indent)
{
WriteNewLine();
WriteIndent();
}
if (!IsWritingCollection)
{
if (_nameState != NameState.IsWritingNameWithMapping)
{
WriteJsonElementName(localName);
}
}
else if (!localName.Equals(JsonGlobals.itemString))
{
throw new XmlException(SR.Format(SR.JsonInvalidItemNameForArrayElement, localName, JsonGlobals.itemString));
}
EnterScope(JsonNodeType.Element);
break;
}
default:
throw new XmlException(SR.JsonInvalidStartElementCall);
}
_isWritingDataTypeAttribute = false;
_isWritingServerTypeAttribute = false;
_isWritingXmlnsAttribute = false;
_wroteServerTypeAttribute = false;
_serverTypeValue = null;
_dataType = JsonDataType.None;
_nodeType = JsonNodeType.Element;
}
public virtual bool Read()
{
// Reset the node value.
this.nodeValue = null;
#if DEBUG
// Reset the node type to None - so that we can verify that the Read method actually sets it.
this.nodeType = JsonNodeType.None;
#endif
// Skip any whitespace characters.
// This also makes sure that we have at least one non-whitespace character available.
if (!this.SkipWhitespaces())
{
return this.EndOfInput();
}
Debug.Assert(
this.tokenStartIndex < this.storedCharacterCount && !IsWhitespaceCharacter(this.characterBuffer[this.tokenStartIndex]),
"The SkipWhitespaces didn't correctly skip all whitespace characters from the input.");
Scope currentScope = this.scopes.Peek();
bool commaFound = false;
if (this.characterBuffer[this.tokenStartIndex] == ',')
{
commaFound = true;
this.tokenStartIndex++;
// Note that validity of the comma is verified below depending on the current scope.
// Skip all whitespaces after comma.
// Note that this causes "Unexpected EOF" error if the comma is the last thing in the input.
// It might not be the best error message in certain cases, but it's still correct (a JSON payload can never end in comma).
if (!this.SkipWhitespaces())
{
return this.EndOfInput();
}
Debug.Assert(
this.tokenStartIndex < this.storedCharacterCount && !IsWhitespaceCharacter(this.characterBuffer[this.tokenStartIndex]),
"The SkipWhitespaces didn't correctly skip all whitespace characters from the input.");
}
switch (currentScope.Type)
{
case ScopeType.Root:
if (commaFound)
{
throw JsonReaderExtensions.CreateException(Strings.JsonReader_UnexpectedComma(ScopeType.Root));
}
if (currentScope.ValueCount > 0)
{
// We already found the top-level value, so fail
throw JsonReaderExtensions.CreateException(Strings.JsonReader_MultipleTopLevelValues);
}
// We expect a "value" - start array, start object or primitive value
this.nodeType = this.ParseValue();
break;
case ScopeType.Array:
if (commaFound && currentScope.ValueCount == 0)
{
throw JsonReaderExtensions.CreateException(Strings.JsonReader_UnexpectedComma(ScopeType.Array));
}
// We might see end of array here
if (this.characterBuffer[this.tokenStartIndex] == ']')
{
this.tokenStartIndex++;
// End of array is only valid when there was no comma before it.
if (commaFound)
{
throw JsonReaderExtensions.CreateException(Strings.JsonReader_UnexpectedComma(ScopeType.Array));
}
this.PopScope();
this.nodeType = JsonNodeType.EndArray;
break;
}
if (!commaFound && currentScope.ValueCount > 0)
{
throw JsonReaderExtensions.CreateException(Strings.JsonReader_MissingComma(ScopeType.Array));
}
// We expect element which is a "value" - start array, start object or primitive value
this.nodeType = this.ParseValue();
break;
case ScopeType.Object:
if (commaFound && currentScope.ValueCount == 0)
{
throw JsonReaderExtensions.CreateException(Strings.JsonReader_UnexpectedComma(ScopeType.Object));
}
// We might see end of object here
if (this.characterBuffer[this.tokenStartIndex] == '}')
{
this.tokenStartIndex++;
// End of object is only valid when there was no comma before it.
if (commaFound)
{
throw JsonReaderExtensions.CreateException(Strings.JsonReader_UnexpectedComma(ScopeType.Object));
}
this.PopScope();
this.nodeType = JsonNodeType.EndObject;
break;
}
else
{
if (!commaFound && currentScope.ValueCount > 0)
{
throw JsonReaderExtensions.CreateException(Strings.JsonReader_MissingComma(ScopeType.Object));
}
// We expect a property here
this.nodeType = this.ParseProperty();
break;
}
case ScopeType.Property:
if (commaFound)
{
throw JsonReaderExtensions.CreateException(Strings.JsonReader_UnexpectedComma(ScopeType.Property));
}
// We expect the property value, which is a "value" - start array, start object or primitive value
this.nodeType = this.ParseValue();
break;
default:
#if SPATIAL
throw JsonReaderExtensions.CreateException(Strings.JsonReader_InternalError);
#else
throw JsonReaderExtensions.CreateException(Strings.General_InternalError(InternalErrorCodes.JsonReader_Read));
#endif
}
Debug.Assert(
this.nodeType != JsonNodeType.None && this.nodeType != JsonNodeType.EndOfInput,
"Read should never go back to None and EndOfInput should be reported by directly returning.");
return true;
}
/// <summary>
/// Constructor.
/// </summary>
/// <param name="reader">The text reader to read input characters from.</param>
/// <param name="jsonFormat">The specific JSON-based format expected by the reader.</param>
/// <param name="isIeee754Compatible">If it is isIeee754Compatible</param>
public JsonReader(TextReader reader, ODataFormat jsonFormat, bool isIeee754Compatible)
{
Debug.Assert(reader != null, "reader != null");
Debug.Assert(jsonFormat == ODataFormat.Json, "Expected a json-based format to create a JsonReader");
this.nodeType = JsonNodeType.None;
this.nodeValue = null;
this.reader = reader;
this.characterBuffer = new char[InitialCharacterBufferSize];
this.storedCharacterCount = 0;
this.tokenStartIndex = 0;
this.endOfInputReached = false;
this.isIeee754Compatible = isIeee754Compatible;
this.allowAnnotations = jsonFormat == ODataFormat.Json;
this.scopes = new Stack<Scope>();
this.scopes.Push(new Scope(ScopeType.Root));
}
private void Nest(JsonNodeType type)
{
Nesting.Push(new JsonWriterState(type));
if (0 != Settings.Indent.Length)
{
Indent += Settings.Indent;
}
}
private void Pair(string name,
string value,
JsonNodeType type)
{
if (null == name)
{
throw new ArgumentNullException("name");
}
if (JsonNodeType.Array == Nesting.Peek().Parent)
{
throw new InvalidOperationException("Named values cannot be added to an array.");
}
_writer.Write("{0}\"{1}\":{2}{3}".FormatWith(Punctuation, name, Settings.ColonPadding, value));
Nesting.Peek().Previous = type;
}
private void End(char value,
JsonNodeType previous)
{
Nesting.Pop();
Nesting.Peek().Previous = previous;
if (0 != Settings.Indent.Length)
{
Indent.RemoveFromEnd(Settings.Indent);
}
_writer.Write("{0}{1}{2}".FormatWith(Settings.CommaPadding, Indent, value));
}
private void Array(string value,
JsonNodeType type)
{
if (JsonNodeType.Array != Nesting.Peek().Parent)
{
throw new InvalidOperationException("Array values can only be added to an array.");
}
_writer.Write("{0}{1}".FormatWith(Punctuation, value));
Nesting.Peek().Previous = type;
}
/// <summary>
/// Validates that the reader is positioned on the specified node type.
/// </summary>
/// <param name="jsonReader">The <see cref="JsonReader"/> to use.</param>
/// <param name="expectedNodeType">The expected node type.</param>
private static void ValidateNodeType(this JsonReader jsonReader, JsonNodeType expectedNodeType)
{
Debug.Assert(jsonReader != null, "jsonReader != null");
Debug.Assert(expectedNodeType != JsonNodeType.None, "expectedNodeType != JsonNodeType.None");
if (jsonReader.NodeType != expectedNodeType)
{
throw CreateException(Strings.JsonReaderExtensions_UnexpectedNodeDetected(expectedNodeType, jsonReader.NodeType));
}
}
private void EnterScope(JsonNodeType currentNodeType)
{
_depth++;
if (_scopes == null)
{
_scopes = new JsonNodeType[4];
}
else if (_scopes.Length == _depth)
{
JsonNodeType[] newScopes = new JsonNodeType[_depth * 2];
Array.Copy(_scopes, 0, newScopes, 0, _depth);
_scopes = newScopes;
}
_scopes[_depth] = currentNodeType;
}
/// <summary>
/// Constructor.
/// </summary>
/// <param name="reader">The text reader to read input characters from.</param>
public JsonReader(TextReader reader)
{
DebugUtils.CheckNoExternalCallers();
Debug.Assert(reader != null, "reader != null");
this.nodeType = JsonNodeType.None;
this.nodeValue = null;
this.reader = reader;
this.characterBuffer = new char[InitialCharacterBufferSize];
this.storedCharacterCount = 0;
this.tokenStartIndex = 0;
this.endOfInputReached = false;
this.scopes = new Stack<Scope>();
this.scopes.Push(new Scope(ScopeType.Root));
}
private void InitializeWriter()
{
_nodeType = JsonNodeType.None;
_dataType = JsonDataType.None;
_isWritingDataTypeAttribute = false;
_wroteServerTypeAttribute = false;
_isWritingServerTypeAttribute = false;
_serverTypeValue = null;
_attributeText = null;
if (_depth != 0)
{
_depth = 0;
}
if ((_scopes != null) && (_scopes.Length > JsonGlobals.maxScopeSize))
{
_scopes = null;
}
// Can't let writeState be at Closed if reinitializing.
_writeState = WriteState.Start;
_endElementBuffer = false;
_indentLevel = 0;
}
/// <summary>
/// Enter a new Scope
/// Increase scopeDepth
/// </summary>
/// <param name="currentNodeType"></param>
private void EnterJsonScope(JsonNodeType currentNodeType)
{
// Increase Depth
++scopeDepth;
// Set the JsonNodeType of the current depth
scopes[scopeDepth] = currentNodeType;
}
public override void WriteEndElement()
{
if (IsClosed)
{
ThrowClosed();
}
if (_depth == 0)
{
throw new XmlException(SR.JsonEndElementNoOpenNodes);
}
if (HasOpenAttribute)
{
throw new XmlException(SR.Format(SR.JsonOpenAttributeMustBeClosedFirst, "WriteEndElement"));
}
_endElementBuffer = false;
JsonNodeType token = ExitScope();
if (token == JsonNodeType.Collection)
{
_indentLevel--;
if (_indent)
{
if (_nodeType == JsonNodeType.Element)
{
_nodeWriter.WriteText(WHITESPACE);
}
else
{
WriteNewLine();
WriteIndent();
}
}
_nodeWriter.WriteText(JsonGlobals.EndCollectionChar);
token = ExitScope();
}
else if (_nodeType == JsonNodeType.QuotedText)
{
// For writing "
WriteJsonQuote();
}
else if (_nodeType == JsonNodeType.Element)
{
if ((_dataType == JsonDataType.None) && (_serverTypeValue != null))
{
throw new XmlException(SR.Format(SR.JsonMustSpecifyDataType, JsonGlobals.typeString, JsonGlobals.objectString, JsonGlobals.serverTypeString));
}
if (IsWritingNameWithMapping && !WrittenNameWithMapping)
{
// Ending </item> without writing item attribute
// Not providing a better error message because localization deadline has passed.
throw new XmlException(SR.Format(SR.JsonMustSpecifyDataType, JsonGlobals.itemString, string.Empty, JsonGlobals.itemString));
}
// the element is empty, it does not have any content,
if ((_dataType == JsonDataType.None) ||
(_dataType == JsonDataType.String))
{
_nodeWriter.WriteText(JsonGlobals.QuoteChar);
_nodeWriter.WriteText(JsonGlobals.QuoteChar);
}
}
else
{
// Assert on only StandaloneText and EndElement because preceding if
// conditions take care of checking for QuotedText and Element.
Fx.Assert((_nodeType == JsonNodeType.StandaloneText) || (_nodeType == JsonNodeType.EndElement),
"nodeType has invalid value " + _nodeType + ". Expected it to be QuotedText, Element, StandaloneText, or EndElement.");
}
if (_depth != 0)
{
if (token == JsonNodeType.Element)
{
_endElementBuffer = true;
}
else if (token == JsonNodeType.Object)
{
_indentLevel--;
if (_indent)
{
if (_nodeType == JsonNodeType.Element)
{
_nodeWriter.WriteText(WHITESPACE);
}
else
{
WriteNewLine();
WriteIndent();
}
}
_nodeWriter.WriteText(JsonGlobals.EndObjectChar);
if ((_depth > 0) && _scopes[_depth] == JsonNodeType.Element)
{
ExitScope();
_endElementBuffer = true;
}
}
}
_dataType = JsonDataType.None;
_nodeType = JsonNodeType.EndElement;
_nameState = NameState.None;
_wroteServerTypeAttribute = false;
}
private void StartText()
{
if (HasOpenAttribute)
throw new InvalidOperationException("JsonMustUseWriteStringForWritingAttributeValues");
if (dataType == JsonDataType.None && serverTypeValue != null)
throw new XmlException("JsonMustSpecifyDataType");
if (IsWritingNameWithMapping && !WrittenNameWithMapping)
throw new XmlException("JsonMustSpecifyDataType");
switch (dataType)
{
case JsonDataType.None:
case JsonDataType.String:
CheckText(JsonNodeType.QuotedText);
if (nodeType != JsonNodeType.QuotedText)
WriteJsonQuote();
nodeType = JsonNodeType.QuotedText;
break;
case JsonDataType.Boolean:
case JsonDataType.Number:
CheckText(JsonNodeType.StandaloneText);
nodeType = JsonNodeType.StandaloneText;
break;
}
}
private void CheckText(JsonNodeType nextNodeType)
{
if (IsClosed)
ThrowClosed();
if (depth == 0)
throw new InvalidOperationException("XmlIllegalOutsideRoot");
if (nextNodeType == JsonNodeType.StandaloneText && nodeType == JsonNodeType.QuotedText)
throw new XmlException("JsonCannotWriteStandaloneTextAfterQuotedText");
}
private void InitializeWriter()
{
nodeType = JsonNodeType.None;
dataType = JsonDataType.None;
isWritingDataTypeAttribute = false;
wroteServerTypeAttribute = false;
isWritingServerTypeAttribute = false;
serverTypeValue = null;
attributeText = null;
depth = 0;
if (scopes != null && scopes.Length > 25)
scopes = null;
writeState = WriteState.Start;
endElementBuffer = false;
}
public override void WriteStartElement(string prefix, string localName, string ns)
{
if (localName == null)
throw new ArgumentException("localName");
if (localName.Length == 0)
throw new ArgumentException("localName", "JsonInvalidLocalNameEmpty");
if (!string.IsNullOrEmpty(prefix) &&
(string.IsNullOrEmpty(ns) || !TrySetWritingNameWithMapping(localName, ns)))
throw new ArgumentException("prefix", "JsonPrefixMustBeNullOrEmpty");
if (!string.IsNullOrEmpty(ns) && !TrySetWritingNameWithMapping(localName, ns))
throw new ArgumentException("ns", "JsonNamespaceMustBeEmpty");
if (IsClosed)
ThrowClosed();
if (HasOpenAttribute)
throw new XmlException("JsonOpenAttributeMustBeClosedFirst");
if (nodeType != JsonNodeType.None && depth == 0)
throw new XmlException("JsonMultipleRootElementsNotAllowedOnWriter");
switch (nodeType)
{
case JsonNodeType.None:
if (!localName.Equals("root"))
throw new XmlException("JsonInvalidRootElementName");
EnterScope(JsonNodeType.Element);
break;
case JsonNodeType.Element:
if (dataType != JsonDataType.Array && dataType != JsonDataType.Object)
throw new XmlException("JsonNodeTypeArrayOrObjectNotSpecified");
if (!IsWritingCollection)
{
if (nameState != NameState.IsWritingNameWithMapping)
WriteJsonElementName(localName);
}
else if (!localName.Equals("item"))
throw new XmlException("JsonInvalidItemNameForArrayElement");
EnterScope(JsonNodeType.Element);
break;
case JsonNodeType.EndElement:
if (endElementBuffer)
nodeWriter.Write(",");
if (!IsWritingCollection)
{
if (nameState != NameState.IsWritingNameWithMapping)
WriteJsonElementName(localName);
}
else if (!localName.Equals("item"))
throw new XmlException("JsonInvalidItemNameForArrayElement");
EnterScope(JsonNodeType.Element);
break;
default:
// ISSUE: reference to a compiler-generated method
throw new XmlException("JsonInvalidStartElementCall");
}
isWritingDataTypeAttribute = false;
isWritingServerTypeAttribute = false;
isWritingXmlnsAttribute = false;
wroteServerTypeAttribute = false;
serverTypeValue = null;
dataType = JsonDataType.None;
nodeType = JsonNodeType.Element;
}
void InitializeWriter()
{
nodeType = JsonNodeType.None;
dataType = JsonDataType.None;
isWritingDataTypeAttribute = false;
wroteServerTypeAttribute = false;
isWritingServerTypeAttribute = false;
serverTypeValue = null;
attributeText = null;
if (depth != 0)
{
depth = 0;
}
if ((scopes != null) && (scopes.Length > JsonGlobals.maxScopeSize))
{
scopes = null;
}
// Can't let writeState be at Closed if reinitializing.
writeState = WriteState.Start;
endElementBuffer = false;
indentLevel = 0;
}
public override void WriteEndElement()
{
if (IsClosed)
ThrowClosed();
if (depth == 0)
throw new XmlException("JsonEndElementNoOpenNodes");
if (HasOpenAttribute)
throw new XmlException("JsonOpenAttributeMustBeClosedFirst");
endElementBuffer = false;
JsonNodeType jsonNodeType = ExitScope();
if (jsonNodeType == JsonNodeType.Collection)
{
//nodeWriter.WriteEndArray();
nodeWriter.Write("]");
jsonNodeType = ExitScope();
}
else if (nodeType == JsonNodeType.QuotedText)
WriteJsonQuote();
else if (nodeType == JsonNodeType.Element)
{
if (dataType == JsonDataType.None && serverTypeValue != null)
throw new XmlException("JsonMustSpecifyDataType");
if (IsWritingNameWithMapping && !WrittenNameWithMapping)
throw new XmlException("JsonMustSpecifyDataType");
if (dataType == JsonDataType.None || dataType == JsonDataType.String)
{
nodeWriter.Write(@"""");
nodeWriter.Write(@"""");
}
}
if (depth != 0)
{
if (jsonNodeType == JsonNodeType.Element)
endElementBuffer = true;
else if (jsonNodeType == JsonNodeType.Object)
{
nodeWriter.Write("}");
if (depth > 0 && scopes[depth] == JsonNodeType.Element)
{
ExitScope();
endElementBuffer = true;
}
}
}
dataType = JsonDataType.None;
nodeType = JsonNodeType.EndElement;
nameState = NameState.None;
wroteServerTypeAttribute = false;
}
private void EnterScope(JsonNodeType currentNodeType)
{
++depth;
if (scopes == null)
scopes = new JsonNodeType[4];
else if (scopes.Length == depth)
{
var jsonNodeTypeArray = new JsonNodeType[depth * 2];
Array.Copy(scopes, jsonNodeTypeArray, depth);
scopes = jsonNodeTypeArray;
}
scopes[depth] = currentNodeType;
}
/// <summary>
/// Called when end of input is reached.
/// </summary>
/// <returns>Always returns false, used for easy readability of the callers.</returns>
private bool EndOfInput()
{
// We should be ending the input only with Root in the scope.
if (this.scopes.Count > 1)
{
// Not all open scopes were closed.
throw JsonReaderExtensions.CreateException(Strings.JsonReader_EndOfInputWithOpenScope);
}
Debug.Assert(
this.scopes.Count > 0 && this.scopes.Peek().Type == ScopeType.Root && this.scopes.Peek().ValueCount <= 1,
"The end of input should only occure with root at the top of the stack with zero or one value.");
Debug.Assert(this.nodeValue == null, "The node value should have been reset to null.");
this.nodeType = JsonNodeType.EndOfInput;
return false;
}
private void Consume(JsonNodeType openNodeType, JsonNodeType closeNodeType)
{
int nestLevel = 0;
while (Read())
{
if (NodeType == closeNodeType)
{
if (nestLevel == 0)
{
return;
}
nestLevel--;
}
else if (NodeType == openNodeType)
{
nestLevel++;
}
}
}