diff options
Diffstat (limited to 'csharp/src/ProtocolBuffers.Serialization/JsonTextCursor.cs')
| -rw-r--r-- | csharp/src/ProtocolBuffers.Serialization/JsonTextCursor.cs | 442 |
1 files changed, 0 insertions, 442 deletions
diff --git a/csharp/src/ProtocolBuffers.Serialization/JsonTextCursor.cs b/csharp/src/ProtocolBuffers.Serialization/JsonTextCursor.cs deleted file mode 100644 index 19c45af7..00000000 --- a/csharp/src/ProtocolBuffers.Serialization/JsonTextCursor.cs +++ /dev/null @@ -1,442 +0,0 @@ -using System;
-using System.Collections.Generic;
-using System.Diagnostics;
-using System.Globalization;
-using System.IO;
-
-namespace Google.ProtocolBuffers.Serialization
-{
- /// <summary>
- /// JSon Tokenizer used by JsonFormatReader
- /// </summary>
- internal abstract class JsonCursor
- {
- public enum JsType
- {
- String,
- Number,
- Object,
- Array,
- True,
- False,
- Null
- }
-
- #region Buffering implementations
-
- private class JsonStreamCursor : JsonCursor
- {
- private readonly byte[] _buffer;
- private int _bufferPos;
- private readonly Stream _input;
-
- public JsonStreamCursor(Stream input)
- {
- _input = input;
- _next = _input.ReadByte();
- }
-
- public JsonStreamCursor(byte[] input)
- {
- _input = null;
- _buffer = input;
- _next = _buffer[_bufferPos];
- }
-
- protected override int Peek()
- {
- if (_input != null)
- {
- return _next;
- }
- else if (_bufferPos < _buffer.Length)
- {
- return _buffer[_bufferPos];
- }
- else
- {
- return -1;
- }
- }
-
- protected override int Read()
- {
- if (_input != null)
- {
- int result = _next;
- _next = _input.ReadByte();
- return result;
- }
- else if (_bufferPos < _buffer.Length)
- {
- return _buffer[_bufferPos++];
- }
- else
- {
- return -1;
- }
- }
- }
-
- private class JsonTextCursor : JsonCursor
- {
- private readonly char[] _buffer;
- private int _bufferPos;
- private readonly TextReader _input;
-
- public JsonTextCursor(char[] input)
- {
- _input = null;
- _buffer = input;
- _bufferPos = 0;
- _next = Peek();
- }
-
- public JsonTextCursor(TextReader input)
- {
- _input = input;
- _next = Peek();
- }
-
- protected override int Peek()
- {
- if (_input != null)
- {
- return _input.Peek();
- }
- else if (_bufferPos < _buffer.Length)
- {
- return _buffer[_bufferPos];
- }
- else
- {
- return -1;
- }
- }
-
- protected override int Read()
- {
- if (_input != null)
- {
- return _input.Read();
- }
- else if (_bufferPos < _buffer.Length)
- {
- return _buffer[_bufferPos++];
- }
- else
- {
- return -1;
- }
- }
- }
-
- #endregion
-
- protected int _next;
- private int _lineNo, _linePos;
-
- public static JsonCursor CreateInstance(byte[] input)
- {
- return new JsonStreamCursor(input);
- }
-
- public static JsonCursor CreateInstance(Stream input)
- {
- return new JsonStreamCursor(input);
- }
-
- public static JsonCursor CreateInstance(string input)
- {
- return new JsonTextCursor(input.ToCharArray());
- }
-
- public static JsonCursor CreateInstance(TextReader input)
- {
- return new JsonTextCursor(input);
- }
-
- protected JsonCursor()
- {
- _lineNo = 1;
- _linePos = 0;
- }
-
- /// <summary>Returns the next character without actually 'reading' it</summary>
- protected abstract int Peek();
-
- /// <summary>Reads the next character in the input</summary>
- protected abstract int Read();
-
- public Char NextChar
- {
- get
- {
- SkipWhitespace();
- return (char) _next;
- }
- }
-
- #region Assert(...)
-
- [DebuggerNonUserCode]
- private string CharDisplay(int ch)
- {
- return ch == -1
- ? "EOF"
- : (ch > 32 && ch < 127)
- ? String.Format("'{0}'", (char) ch)
- : String.Format("'\\u{0:x4}'", ch);
- }
-
- [DebuggerNonUserCode]
- private void Assert(bool cond, char expected)
- {
- if (!cond)
- {
- throw new FormatException(
- String.Format(FrameworkPortability.InvariantCulture,
- "({0}:{1}) error: Unexpected token {2}, expected: {3}.",
- _lineNo, _linePos,
- CharDisplay(_next),
- CharDisplay(expected)
- ));
- }
- }
-
- [DebuggerNonUserCode]
- public void Assert(bool cond, string message)
- {
- if (!cond)
- {
- throw new FormatException(
- String.Format(FrameworkPortability.InvariantCulture,
- "({0},{1}) error: {2}", _lineNo, _linePos, message));
- }
- }
-
- [DebuggerNonUserCode]
- public void Assert(bool cond, string format, params object[] args)
- {
- if (!cond)
- {
- if (args != null && args.Length > 0)
- {
- format = String.Format(format, args);
- }
- throw new FormatException(
- String.Format(FrameworkPortability.InvariantCulture,
- "({0},{1}) error: {2}", _lineNo, _linePos, format));
- }
- }
-
- #endregion
-
- private char ReadChar()
- {
- int ch = Read();
- Assert(ch != -1, "Unexpected end of file.");
- if (ch == '\n')
- {
- _lineNo++;
- _linePos = 0;
- }
- else if (ch != '\r')
- {
- _linePos++;
- }
- _next = Peek();
- return (char) ch;
- }
-
- public void Consume(char ch)
- {
- Assert(TryConsume(ch), ch);
- }
-
- public bool TryConsume(char ch)
- {
- SkipWhitespace();
- if (_next == ch)
- {
- ReadChar();
- return true;
- }
- return false;
- }
-
- public void Consume(string sequence)
- {
- SkipWhitespace();
-
- foreach (char ch in sequence)
- {
- Assert(ch == ReadChar(), "Expected token '{0}'.", sequence);
- }
- }
-
- public void SkipWhitespace()
- {
- int chnext = _next;
- while (chnext != -1)
- {
- if (!Char.IsWhiteSpace((char) chnext))
- {
- break;
- }
- ReadChar();
- chnext = _next;
- }
- }
-
- public string ReadString()
- {
- SkipWhitespace();
- Consume('"');
- List<Char> sb = new List<char>(100);
- while (_next != '"')
- {
- if (_next == '\\')
- {
- Consume('\\'); //skip the escape
- char ch = ReadChar();
- switch (ch)
- {
- case 'b':
- sb.Add('\b');
- break;
- case 'f':
- sb.Add('\f');
- break;
- case 'n':
- sb.Add('\n');
- break;
- case 'r':
- sb.Add('\r');
- break;
- case 't':
- sb.Add('\t');
- break;
- case 'u':
- {
- string hex = new string(new char[] {ReadChar(), ReadChar(), ReadChar(), ReadChar()});
- int result;
- Assert(
- FrameworkPortability.TryParseInt32(hex, NumberStyles.AllowHexSpecifier, FrameworkPortability.InvariantCulture,
- out result),
- "Expected a 4-character hex specifier.");
- sb.Add((char) result);
- break;
- }
- default:
- sb.Add(ch);
- break;
- }
- }
- else
- {
- Assert(_next != '\n' && _next != '\r' && _next != '\f' && _next != -1, '"');
- sb.Add(ReadChar());
- }
- }
- Consume('"');
- return new String(sb.ToArray());
- }
-
- public string ReadNumber()
- {
- SkipWhitespace();
- List<Char> sb = new List<char>(24);
- if (_next == '-')
- {
- sb.Add(ReadChar());
- }
- Assert(_next >= '0' && _next <= '9', "Expected a numeric type.");
- while ((_next >= '0' && _next <= '9') || _next == '.')
- {
- sb.Add(ReadChar());
- }
- if (_next == 'e' || _next == 'E')
- {
- sb.Add(ReadChar());
- if (_next == '-' || _next == '+')
- {
- sb.Add(ReadChar());
- }
- Assert(_next >= '0' && _next <= '9', "Expected a numeric type.");
- while (_next >= '0' && _next <= '9')
- {
- sb.Add(ReadChar());
- }
- }
- return new String(sb.ToArray());
- }
-
- public JsType ReadVariant(out object value)
- {
- SkipWhitespace();
- switch (_next)
- {
- case 'n':
- Consume("null");
- value = null;
- return JsType.Null;
- case 't':
- Consume("true");
- value = true;
- return JsType.True;
- case 'f':
- Consume("false");
- value = false;
- return JsType.False;
- case '"':
- value = ReadString();
- return JsType.String;
- case '{':
- {
- Consume('{');
- while (NextChar != '}')
- {
- ReadString();
- Consume(':');
- object tmp;
- ReadVariant(out tmp);
- if (!TryConsume(','))
- {
- break;
- }
- }
- Consume('}');
- value = null;
- return JsType.Object;
- }
- case '[':
- {
- Consume('[');
- List<object> values = new List<object>();
- while (NextChar != ']')
- {
- object tmp;
- ReadVariant(out tmp);
- values.Add(tmp);
- if (!TryConsume(','))
- {
- break;
- }
- }
- Consume(']');
- value = values.ToArray();
- return JsType.Array;
- }
- default:
- if ((_next >= '0' && _next <= '9') || _next == '-')
- {
- value = ReadNumber();
- return JsType.Number;
- }
- Assert(false, "Expected a value.");
- throw new FormatException();
- }
- }
- }
-}
\ No newline at end of file |