diff options
Diffstat (limited to 'csharp/src/ProtocolBuffers.Serialization/JsonFormatReader.cs')
| -rw-r--r-- | csharp/src/ProtocolBuffers.Serialization/JsonFormatReader.cs | 262 |
1 files changed, 0 insertions, 262 deletions
diff --git a/csharp/src/ProtocolBuffers.Serialization/JsonFormatReader.cs b/csharp/src/ProtocolBuffers.Serialization/JsonFormatReader.cs deleted file mode 100644 index 423196d8..00000000 --- a/csharp/src/ProtocolBuffers.Serialization/JsonFormatReader.cs +++ /dev/null @@ -1,262 +0,0 @@ -using System;
-using System.Collections.Generic;
-using System.IO;
-using System.Xml;
-
-namespace Google.ProtocolBuffers.Serialization
-{
- /// <summary>
- /// JsonFormatReader is used to parse Json into a message or an array of messages
- /// </summary>
- public class JsonFormatReader : AbstractTextReader
- {
- private readonly JsonCursor _input;
- // The expected token that ends the current item, either ']' or '}'
- private readonly Stack<int> _stopChar;
-
- private enum ReaderState
- {
- Start,
- BeginValue,
- EndValue,
- BeginObject,
- BeginArray
- }
-
- private string _current;
- private ReaderState _state;
-
- /// <summary>
- /// Constructs a JsonFormatReader to parse Json into a message, this method does not use text encoding, all bytes MUST
- /// represent ASCII character values.
- /// </summary>
- public static JsonFormatReader CreateInstance(Stream stream)
- {
- return new JsonFormatReader(JsonCursor.CreateInstance(stream));
- }
-
- /// <summary>
- /// Constructs a JsonFormatReader to parse Json into a message, this method does not use text encoding, all bytes MUST
- /// represent ASCII character values.
- /// </summary>
- public static JsonFormatReader CreateInstance(byte[] bytes)
- {
- return new JsonFormatReader(JsonCursor.CreateInstance(bytes));
- }
-
- /// <summary>
- /// Constructs a JsonFormatReader to parse Json into a message
- /// </summary>
- public static JsonFormatReader CreateInstance(string jsonText)
- {
- return new JsonFormatReader(JsonCursor.CreateInstance(jsonText));
- }
-
- /// <summary>
- /// Constructs a JsonFormatReader to parse Json into a message
- /// </summary>
- public static JsonFormatReader CreateInstance(TextReader input)
- {
- return new JsonFormatReader(JsonCursor.CreateInstance(input));
- }
-
- /// <summary>
- /// Constructs a JsonFormatReader to parse Json into a message
- /// </summary>
- internal JsonFormatReader(JsonCursor input)
- {
- _input = input;
- _stopChar = new Stack<int>();
- _stopChar.Push(-1);
- _state = ReaderState.Start;
- }
-
- /// <summary>
- /// Constructs a JsonFormatReader to parse Json into a message
- /// </summary>
- protected JsonFormatReader(TextReader input)
- : this(JsonCursor.CreateInstance(input))
- {
- }
-
- /// <summary>
- /// Returns true if the reader is currently on an array element
- /// </summary>
- public bool IsArrayMessage
- {
- get { return _input.NextChar == '['; }
- }
-
- /// <summary>
- /// Returns an enumerator that is used to cursor over an array of messages
- /// </summary>
- /// <remarks>
- /// This is generally used when receiving an array of messages rather than a single root message
- /// </remarks>
- public IEnumerable<JsonFormatReader> EnumerateArray()
- {
- foreach (string ignored in ForeachArrayItem(_current))
- {
- yield return this;
- }
- }
-
- /// <summary>
- /// Reads the root-message preamble specific to this formatter
- /// </summary>
- public override void ReadMessageStart()
- {
- _input.Consume('{');
- _stopChar.Push('}');
-
- _state = ReaderState.BeginObject;
- }
-
- /// <summary>
- /// Reads the root-message close specific to this formatter
- /// </summary>
- public override void ReadMessageEnd()
- {
- _input.Consume((char)_stopChar.Pop());
- _state = ReaderState.EndValue;
- }
-
- /// <summary>
- /// Merges the contents of stream into the provided message builder
- /// </summary>
- public override TBuilder Merge<TBuilder>(TBuilder builder, ExtensionRegistry registry)
- {
- ReadMessageStart();
- builder.WeakMergeFrom(this, registry);
- ReadMessageEnd();
- return builder;
- }
-
- /// <summary>
- /// Causes the reader to skip past this field
- /// </summary>
- protected override void Skip()
- {
- object temp;
- _input.ReadVariant(out temp);
- _state = ReaderState.EndValue;
- }
-
- /// <summary>
- /// Peeks at the next field in the input stream and returns what information is available.
- /// </summary>
- /// <remarks>
- /// This may be called multiple times without actually reading the field. Only after the field
- /// is either read, or skipped, should PeekNext return a different value.
- /// </remarks>
- protected override bool PeekNext(out string field)
- {
- field = _current;
- if (_state == ReaderState.BeginValue)
- {
- return true;
- }
-
- int next = _input.NextChar;
- if (next == _stopChar.Peek())
- {
- return false;
- }
-
- _input.Assert(next != -1, "Unexpected end of file.");
-
- //not sure about this yet, it will allow {, "a":true }
- if (_state == ReaderState.EndValue && !_input.TryConsume(','))
- {
- return false;
- }
-
- field = _current = _input.ReadString();
- _input.Consume(':');
- _state = ReaderState.BeginValue;
- return true;
- }
-
- /// <summary>
- /// Returns true if it was able to read a String from the input
- /// </summary>
- protected override bool ReadAsText(ref string value, Type typeInfo)
- {
- object temp;
- JsonCursor.JsType type = _input.ReadVariant(out temp);
- _state = ReaderState.EndValue;
-
- _input.Assert(type != JsonCursor.JsType.Array && type != JsonCursor.JsType.Object,
- "Encountered {0} while expecting {1}", type, typeInfo);
- if (type == JsonCursor.JsType.Null)
- {
- return false;
- }
- if (type == JsonCursor.JsType.True)
- {
- value = "1";
- }
- else if (type == JsonCursor.JsType.False)
- {
- value = "0";
- }
- else
- {
- value = temp as string;
- }
-
- //exponent representation of integer number:
- if (value != null && type == JsonCursor.JsType.Number &&
- (typeInfo != typeof(double) && typeInfo != typeof(float)) &&
- value.IndexOf("e", StringComparison.OrdinalIgnoreCase) > 0)
- {
- value = XmlConvert.ToString((long) Math.Round(XmlConvert.ToDouble(value), 0));
- }
- return value != null;
- }
-
- /// <summary>
- /// Returns true if it was able to read a ByteString from the input
- /// </summary>
- protected override bool Read(ref ByteString value)
- {
- string bytes = null;
- if (Read(ref bytes))
- {
- value = ByteString.FromBase64(bytes);
- return true;
- }
- return false;
- }
-
- /// <summary>
- /// Cursors through the array elements and stops at the end of the array
- /// </summary>
- protected override IEnumerable<string> ForeachArrayItem(string field)
- {
- _input.Consume('[');
- _stopChar.Push(']');
- _state = ReaderState.BeginArray;
- while (_input.NextChar != ']')
- {
- _current = field;
- yield return field;
- if (!_input.TryConsume(','))
- {
- break;
- }
- }
- _input.Consume((char) _stopChar.Pop());
- _state = ReaderState.EndValue;
- }
-
- /// <summary>
- /// Merges the input stream into the provided IBuilderLite
- /// </summary>
- protected override bool ReadMessage(IBuilderLite builder, ExtensionRegistry registry)
- {
- Merge(builder, registry);
- return true;
- }
- }
-}
\ No newline at end of file |