ASN1C C# Runtime Library  7.6
Public Member Functions | Static Public Attributes | List of all members
Asn1Null Class Reference
Inheritance diagram for Asn1Null:
Asn1Type Asn1TypeIF

Public Member Functions

override void Decode (Asn1BerDecodeBuffer buffer, bool explicitTagging, int implicitLength)
 
override void Decode (Asn1PerDecodeBuffer buffer)
 
override void Decode (Asn1OerDecodeBuffer buffer)
 
virtual void DecodeXER (System.String buffer, System.String attrs)
 
override void DecodeXML (System.String buffer, System.String attrs)
 
override int Encode (Asn1BerEncodeBuffer buffer, bool explicitTagging)
 
override void Encode (Asn1PerEncodeBuffer buffer)
 
override void Encode (Asn1OerEncodeBuffer buffer)
 
override void Encode (Asn1XerEncoder buffer, System.String elemName)
 
override void Encode (Asn1XmlEncoder buffer, System.String elemName, System.String nsPrefix)
 
override void Encode (Asn1BerOutputStream outs, bool explicitTagging)
 
override void Encode (Asn1PerOutputStream outs)
 
override bool Equals (object o)
 
override System.String ToString ()
 
- Public Member Functions inherited from Asn1Type
void _SetKey (byte[] rtkey)
 
virtual void Decode (Asn1BerDecodeBuffer buffer)
 
virtual void Decode (System.Object reader, System.String xmlURI)
 
virtual void Decode (System.Object reader, System.IO.Stream byteStream)
 
virtual void Decode (Asn1MderDecodeBuffer buffer)
 
virtual void DecodeXML (String buffer, String attrs)
 
virtual int Encode (Asn1BerEncodeBuffer buffer)
 
virtual void Encode (Asn1XerEncoder buffer)
 
virtual void Encode (Asn1XmlEncoder buffer)
 
virtual void Encode (Asn1XmlEncodeBuffer buffer)
 
virtual void Encode (Asn1MderOutputStream buffer)
 
virtual void Encode (Asn1MderOutputStream buffer, bool useCachedLength)
 
virtual void Encode (Asn1CerOutputStream outs, bool explicitTagging)
 
void EncodeAsOpenType (Asn1OerEncodeBuffer buffer)
 
virtual void EncodeAttribute (Asn1XmlEncoder buffer, System.String attrName)
 
virtual bool Equals (Asn1Type obj)
 
String GetNonParameterizedTypeName ()
 
virtual void Indent (System.IO.TextWriter outs, int level)
 
virtual bool IsOpenType ()
 
virtual bool MatchTypeName (System.String typeName)
 
virtual void Pdiag (System.String s)
 
virtual void Print (System.IO.TextWriter outs, System.String varName, int level)
 
virtual void Print (System.String varName)
 
void SetNonParameterizedTypeName (String value)
 
virtual void SetOpenType ()
 

Static Public Attributes

static new readonly Asn1Tag _TAG
 
static readonly Asn1Null NULL_VALUE = new Asn1Null()
 
- Static Public Attributes inherited from Asn1Type
static readonly Asn1Tag _TAG
 

Additional Inherited Members

- Static Public Member Functions inherited from Asn1Type
static void _SetKey2 (byte[] rtkey)
 
static void _SetLicLocation (String path)
 
static Asn1Type Decode (Asn1BerDecodeBuffer buffer, Asn1OpenTypeField openTypeField, bool explicitTag, int implicitLength)
 
static Asn1Type Decode (Asn1OerDecodeBuffer buffer, Asn1OpenTypeField openTypeField)
 
static Asn1Type Decode (Asn1PerDecodeBuffer buffer, Asn1OpenTypeField openTypeField)
 
static System.String GetTypeName (short typeCode)
 
- Public Attributes inherited from Asn1Type
const short BIT_STRING = 3
 
const short BMPString = 30
 
const short BOOLEAN = 1
 
const short DATE = 31
 
const short ENUMERATED = 10
 
const short EOC = 0
 
const short EXTERNAL = 8
 
const short GeneralString = 27
 
const short GeneralTime = 24
 
const short GraphicString = 25
 
const short IA5String = 22
 
const short INTEGER = 2
 
const short NULL = 5
 
const short NumericString = 18
 
const short OBJECT_IDENTIFIER = 6
 
const short ObjectDescriptor = 7
 
const short OCTET_STRING = 4
 
const short OpenType = 99
 
const short PrintableString = 19
 
const short REAL = 9
 
const short RELATIVE_OID_IRI = 36
 
const short RelativeOID = 13
 
const short SEQUENCE = 16
 
const short SET = 17
 
const short T61String = TeletexString
 
const short TeletexString = 20
 
const short TIME = 14
 
const short UniversalString = 28
 
const short UTCTime = 23
 
const short UTF8String = 12
 
const short VideotexString = 21
 
const short VisibleString = 26
 
- Properties inherited from Asn1Type
virtual String AsnTypeName [get]
 
virtual int Length [get]
 

Detailed Description

This class represents the ASN.1 NULL built-in type.

Member Function Documentation

◆ Decode() [1/3]

override void Decode ( Asn1BerDecodeBuffer  buffer,
bool  explicitTagging,
int  implicitLength 
)
virtual

This method decodes an ASN.1 null value including the UNIVERSAL tag value and length if explicit tagging is specified. This overloaded version uses the Basic Encoding Rules (BER).

Parameters
bufferDecode message buffer object
explicitTaggingFlag indicating element is explicitly tagged
implicitLengthLength of contents if implicit

Reimplemented from Asn1Type.

◆ Decode() [2/3]

override void Decode ( Asn1PerDecodeBuffer  buffer)
virtual

This method decodes an ASN.1 null value in accordance with the Packed Encoding Rules (PER).

Parameters
bufferDecode message buffer object

Reimplemented from Asn1Type.

◆ Decode() [3/3]

override void Decode ( Asn1OerDecodeBuffer  buffer)
virtual

Decode ASN.1 NULL type, using Octet Encoding Rules (OER).

Reimplemented from Asn1Type.

◆ DecodeXER()

virtual void DecodeXER ( System.String  buffer,
System.String  attrs 
)
virtual

This method decodes an ASN.1 null value using the XML encoding rules (XER).

Parameters
bufferString containing data to be decoded
attrsAttributes string from element tag

◆ DecodeXML()

override void DecodeXML ( System.String  buffer,
System.String  attrs 
)

This method decodes an ASN.1 null value using the XML schema encoding rules(asn2xsd).

Parameters
bufferString containing data to be decoded
attrsAttributes string from element tag

◆ Encode() [1/7]

override int Encode ( Asn1BerEncodeBuffer  buffer,
bool  explicitTagging 
)
virtual

This method encodes an ASN.1 null value including the UNIVERSAL tag value and length if explicit tagging is specified. This overloaded version used the Basic Encoding Rules (BER).

Parameters
bufferEncode message buffer object
explicitTaggingFlag indicating explicit tagging should be done
Returns
Length (in octets) of encoded component

Reimplemented from Asn1Type.

◆ Encode() [2/7]

override void Encode ( Asn1PerEncodeBuffer  buffer)
virtual

This method encodes an ASN.1 null value in accordance with the Packed Encoding Rules (PER).

Parameters
bufferEncode message buffer object

Reimplemented from Asn1Type.

References Asn1Type.NULL, and Asn1MessageBufferBase.TypeCode.

◆ Encode() [3/7]

override void Encode ( Asn1OerEncodeBuffer  buffer)
virtual

Encode ASN.1 NULL type, using Octet Encoding Rules (OER).

Reimplemented from Asn1Type.

References Asn1XerEncoder.EncodeEmptyElement(), Asn1XmlEncoder.EncodeEmptyElement(), and Asn1XmlXerEncoder.Indent().

◆ Encode() [4/7]

override void Encode ( Asn1XerEncoder  buffer,
System.String  elemName 
)
virtual

This method encodes an ASN.1 null value using the XML encoding rules (XER).

Parameters
bufferEncode message buffer object
elemNameElement name

Reimplemented from Asn1Type.

◆ Encode() [5/7]

override void Encode ( Asn1XmlEncoder  buffer,
System.String  elemName,
System.String  nsPrefix 
)
virtual

This method encodes an ASN.1 null value using the XML Encoding as specified in the XML schema standard(asn2xsd).

Parameters
bufferEncode message buffer object
elemNameElement name
nsPrefixElement namespace value

Reimplemented from Asn1Type.

◆ Encode() [6/7]

override void Encode ( Asn1BerOutputStream  outs,
bool  explicitTagging 
)
virtual

This method encodes and writes to the stream an ASN.1 NULL value including the UNIVERSAL tag value and length if explicit tagging is specified. This overloaded version uses the Basic Encoding Rules (BER).

Throws, Exception thrown by C# System.IO.Stream for I/O error

Parameters
outsBER Output Stream object
explicitTaggingFlag indicating explicit tagging should be done
Exceptions
Asn1ExceptionThrown, if operation is failed.

Reimplemented from Asn1Type.

◆ Encode() [7/7]

override void Encode ( Asn1PerOutputStream  outs)
virtual

This method encodes an ASN.1 null value in accordance with the Packed Encoding Rules (PER).

Also throws any exception thrown by the underlying Asn1PerOutputStream.

Parameters
outsPER Output Stream object
Exceptions
Asn1ExceptionThrown, if operation is failed.

Reimplemented from Asn1Type.

◆ Equals()

override bool Equals ( object  o)

Tests for equality with any other object. Returns true if the input type is an Asn1Null object and false otherwise.

References Asn1BerEncodeBuffer.EncodeTagAndLength(), Asn1Type.NULL, and Asn1MessageBufferBase.TypeCode.

◆ ToString()

override System.String ToString ( )

This method will return a string representation of the null value. The format is the ASN.1 value format for this type..

Returns
Stringified representation of the value

References Asn1BerOutputStream.EncodeLength(), Asn1BerOutputStream.EncodeTag(), Asn1Tag.PRIM, and Asn1Tag.UNIV.

Member Data Documentation

◆ _TAG

new readonly Asn1Tag _TAG
static

The _TAG constant describes the universal tag for this data type (UNIVERSAL 5).

◆ NULL_VALUE

readonly Asn1Null NULL_VALUE = new Asn1Null()
static

The NULL_VALUE constant represents a NULL value.