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JsonToken.cs
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JsonToken.cs
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/* Copyright 2010-present MongoDB Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
using System;
namespace MongoDB.Bson.IO
{
/// <summary>
/// Represents a JSON token type.
/// </summary>
public enum JsonTokenType
{
/// <summary>
/// An invalid token.
/// </summary>
Invalid,
/// <summary>
/// A begin array token (a '[').
/// </summary>
BeginArray,
/// <summary>
/// A begin object token (a '{').
/// </summary>
BeginObject,
/// <summary>
/// An end array token (a ']').
/// </summary>
EndArray,
/// <summary>
/// A left parenthesis (a '(').
/// </summary>
LeftParen,
/// <summary>
/// A right parenthesis (a ')').
/// </summary>
RightParen,
/// <summary>
/// An end object token (a '}').
/// </summary>
EndObject,
/// <summary>
/// A colon token (a ':').
/// </summary>
Colon,
/// <summary>
/// A comma token (a ',').
/// </summary>
Comma,
/// <summary>
/// A DateTime token.
/// </summary>
DateTime,
/// <summary>
/// A Double token.
/// </summary>
Double,
/// <summary>
/// An Int32 token.
/// </summary>
Int32,
/// <summary>
/// And Int64 token.
/// </summary>
Int64,
/// <summary>
/// An ObjectId token.
/// </summary>
ObjectId,
/// <summary>
/// A regular expression token.
/// </summary>
RegularExpression,
/// <summary>
/// A string token.
/// </summary>
String,
/// <summary>
/// An unquoted string token.
/// </summary>
UnquotedString,
/// <summary>
/// An end of file token.
/// </summary>
EndOfFile
}
/// <summary>
/// Represents a JSON token.
/// </summary>
public class JsonToken
{
// private fields
private JsonTokenType _type;
private string _lexeme;
// constructors
/// <summary>
/// Initializes a new instance of the JsonToken class.
/// </summary>
/// <param name="type">The token type.</param>
/// <param name="lexeme">The lexeme.</param>
public JsonToken(JsonTokenType type, string lexeme)
{
_type = type;
_lexeme = lexeme;
}
// public properties
/// <summary>
/// Gets the token type.
/// </summary>
public JsonTokenType Type
{
get { return _type; }
}
/// <summary>
/// Gets the lexeme.
/// </summary>
public string Lexeme
{
get { return _lexeme; }
}
/// <summary>
/// Gets the value of a DateTime token.
/// </summary>
public virtual BsonDateTime DateTimeValue
{
get { throw new NotSupportedException(); }
}
/// <summary>
/// Gets the value of a Double token.
/// </summary>
public virtual double DoubleValue
{
get { throw new NotSupportedException(); }
}
/// <summary>
/// Gets the value of an Int32 token.
/// </summary>
public virtual int Int32Value
{
get { throw new NotSupportedException(); }
}
/// <summary>
/// Gets the value of an Int64 token.
/// </summary>
public virtual long Int64Value
{
get { throw new NotSupportedException(); }
}
/// <summary>
/// Gets a value indicating whether this token is number.
/// </summary>
/// <value>
/// <c>true</c> if this token is number; otherwise, <c>false</c>.
/// </value>
public virtual bool IsNumber
{
get { return false; }
}
/// <summary>
/// Gets the value of an ObjectId token.
/// </summary>
public virtual ObjectId ObjectIdValue
{
get { throw new NotSupportedException(); }
}
/// <summary>
/// Gets the value of a regular expression token.
/// </summary>
public virtual BsonRegularExpression RegularExpressionValue
{
get { throw new NotSupportedException(); }
}
/// <summary>
/// Gets the value of a string token.
/// </summary>
public virtual string StringValue
{
get { throw new NotSupportedException(); }
}
}
/// <summary>
/// Represents a DateTime JSON token.
/// </summary>
public class DateTimeJsonToken : JsonToken
{
// private fields
private BsonDateTime _value;
// constructors
/// <summary>
/// Initializes a new instance of the DateTimeJsonToken class.
/// </summary>
/// <param name="lexeme">The lexeme.</param>
/// <param name="value">The DateTime value.</param>
public DateTimeJsonToken(string lexeme, BsonDateTime value)
: base(JsonTokenType.DateTime, lexeme)
{
_value = value;
}
// public properties
/// <summary>
/// Gets the value of a DateTime token.
/// </summary>
public override BsonDateTime DateTimeValue
{
get { return _value; }
}
}
/// <summary>
/// Represents a Double JSON token.
/// </summary>
public class DoubleJsonToken : JsonToken
{
// private fields
private double _value;
// constructors
/// <summary>
/// Initializes a new instance of the DoubleJsonToken class.
/// </summary>
/// <param name="lexeme">The lexeme.</param>
/// <param name="value">The Double value.</param>
public DoubleJsonToken(string lexeme, double value)
: base(JsonTokenType.Double, lexeme)
{
_value = value;
}
// public properties
/// <summary>
/// Gets the value of a Double token.
/// </summary>
public override double DoubleValue
{
get { return _value; }
}
/// <summary>
/// Gets the value of an Int32 token.
/// </summary>
public override int Int32Value
{
get { return (int)_value; }
}
/// <summary>
/// Gets the value of an Int64 token.
/// </summary>
public override long Int64Value
{
get { return (long)_value; }
}
/// <summary>
/// Gets a value indicating whether this token is number.
/// </summary>
/// <value>
/// <c>true</c> if this token is number; otherwise, <c>false</c>.
/// </value>
public override bool IsNumber
{
get { return true; }
}
}
/// <summary>
/// Represents an Int32 JSON token.
/// </summary>
public class Int32JsonToken : JsonToken
{
// private fields
private int _value;
// constructors
/// <summary>
/// Initializes a new instance of the Int32JsonToken class.
/// </summary>
/// <param name="lexeme">The lexeme.</param>
/// <param name="value">The Int32 value.</param>
public Int32JsonToken(string lexeme, int value)
: base(JsonTokenType.Int32, lexeme)
{
_value = value;
}
// public properties
/// <summary>
/// Gets the value of a Double token.
/// </summary>
public override double DoubleValue
{
get { return _value; }
}
/// <summary>
/// Gets the value of an Int32 token.
/// </summary>
public override int Int32Value
{
get { return _value; }
}
/// <summary>
/// Gets the value of an Int32 token as an Int64.
/// </summary>
public override long Int64Value
{
get { return _value; }
}
/// <summary>
/// Gets a value indicating whether this token is number.
/// </summary>
/// <value>
/// <c>true</c> if this token is number; otherwise, <c>false</c>.
/// </value>
public override bool IsNumber
{
get { return true; }
}
}
/// <summary>
/// Represents an Int64 JSON token.
/// </summary>
public class Int64JsonToken : JsonToken
{
// private fields
private long _value;
// constructors
/// <summary>
/// Initializes a new instance of the Int64JsonToken class.
/// </summary>
/// <param name="lexeme">The lexeme.</param>
/// <param name="value">The Int64 value.</param>
public Int64JsonToken(string lexeme, long value)
: base(JsonTokenType.Int64, lexeme)
{
_value = value;
}
// public properties
/// <summary>
/// Gets the value of a Double token.
/// </summary>
public override double DoubleValue
{
get { return _value; }
}
/// <summary>
/// Gets the value of an Int32 token.
/// </summary>
public override int Int32Value
{
get { return (int)_value; }
}
/// <summary>
/// Gets the value of an Int64 token.
/// </summary>
public override long Int64Value
{
get { return _value; }
}
/// <summary>
/// Gets a value indicating whether this token is number.
/// </summary>
/// <value>
/// <c>true</c> if this token is number; otherwise, <c>false</c>.
/// </value>
public override bool IsNumber
{
get { return true; }
}
}
/// <summary>
/// Represents an ObjectId JSON token.
/// </summary>
public class ObjectIdJsonToken : JsonToken
{
// private fields
private ObjectId _value;
// constructors
/// <summary>
/// Initializes a new instance of the ObjectIdJsonToken class.
/// </summary>
/// <param name="lexeme">The lexeme.</param>
/// <param name="value">The ObjectId value.</param>
public ObjectIdJsonToken(string lexeme, ObjectId value)
: base(JsonTokenType.ObjectId, lexeme)
{
_value = value;
}
// public properties
/// <summary>
/// Gets the value of an ObjectId token.
/// </summary>
public override ObjectId ObjectIdValue
{
get { return _value; }
}
}
/// <summary>
/// Represents a regular expression JSON token.
/// </summary>
public class RegularExpressionJsonToken : JsonToken
{
// private fields
private BsonRegularExpression _value;
// constructors
/// <summary>
/// Initializes a new instance of the RegularExpressionJsonToken class.
/// </summary>
/// <param name="lexeme">The lexeme.</param>
/// <param name="value">The BsonRegularExpression value.</param>
public RegularExpressionJsonToken(string lexeme, BsonRegularExpression value)
: base(JsonTokenType.RegularExpression, lexeme)
{
_value = value;
}
// public properties
/// <summary>
/// Gets the value of a regular expression token.
/// </summary>
public override BsonRegularExpression RegularExpressionValue
{
get { return _value; }
}
}
/// <summary>
/// Represents a String JSON token.
/// </summary>
public class StringJsonToken : JsonToken
{
// private fields
private string _value;
// constructors
/// <summary>
/// Initializes a new instance of the StringJsonToken class.
/// </summary>
/// <param name="type">The token type.</param>
/// <param name="lexeme">The lexeme.</param>
/// <param name="value">The String value.</param>
public StringJsonToken(JsonTokenType type, string lexeme, string value)
: base(type, lexeme)
{
_value = value;
}
// public properties
/// <summary>
/// Gets the value of an String token.
/// </summary>
public override string StringValue
{
get { return _value; }
}
}
}