mirror of
https://github.com/S7NetPlus/s7netplus.git
synced 2026-02-17 22:38:27 +08:00
bd8177d39e
This requires reference types that can be null to be annotated by a ? operator, similar to value types. This gives the advantage that the compiler can warn against any null dereference exceptions, of which this commits elimits a few. To make the underlying protocol implementation not any more complicated and to eliminate existing problems, and not that precise error reporting, I replaced some return null statements with explicit Exceptions. This lead to the assumption that those core protocoll functions always return non-null objects if they do not throw, making the PLC code simpler. Adjust some NotConnected tests to look for explicit PlcException instead of NullReferenceException.
114 lines
2.7 KiB
C#
114 lines
2.7 KiB
C#
using System;
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#if NET_FULL
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using System.Runtime.Serialization;
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#endif
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namespace S7.Net
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{
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internal class WrongNumberOfBytesException : Exception
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{
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public WrongNumberOfBytesException() : base()
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{
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}
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public WrongNumberOfBytesException(string message) : base(message)
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{
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}
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public WrongNumberOfBytesException(string message, Exception innerException) : base(message, innerException)
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{
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}
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#if NET_FULL
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protected WrongNumberOfBytesException(SerializationInfo info, StreamingContext context) : base(info, context)
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{
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}
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#endif
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}
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internal class InvalidAddressException : Exception
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{
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public InvalidAddressException() : base ()
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{
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}
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public InvalidAddressException(string message) : base(message)
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{
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}
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public InvalidAddressException(string message, Exception innerException) : base(message, innerException)
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{
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}
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#if NET_FULL
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protected InvalidAddressException(SerializationInfo info, StreamingContext context) : base(info, context)
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{
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}
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#endif
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}
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internal class InvalidVariableTypeException : Exception
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{
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public InvalidVariableTypeException() : base()
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{
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}
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public InvalidVariableTypeException(string message) : base(message)
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{
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}
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public InvalidVariableTypeException(string message, Exception innerException) : base(message, innerException)
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{
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}
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#if NET_FULL
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protected InvalidVariableTypeException(SerializationInfo info, StreamingContext context) : base(info, context)
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{
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}
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#endif
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}
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internal class TPKTInvalidException : Exception
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{
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public TPKTInvalidException() : base()
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{
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}
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public TPKTInvalidException(string message) : base(message)
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{
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}
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public TPKTInvalidException(string message, Exception innerException) : base(message, innerException)
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{
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}
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#if NET_FULL
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protected TPKTInvalidException(SerializationInfo info, StreamingContext context) : base(info, context)
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{
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}
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#endif
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}
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internal class TPDUInvalidException : Exception
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{
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public TPDUInvalidException() : base()
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{
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}
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public TPDUInvalidException(string message) : base(message)
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{
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}
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public TPDUInvalidException(string message, Exception innerException) : base(message, innerException)
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{
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}
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#if NET_FULL
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protected TPDUInvalidException(SerializationInfo info, StreamingContext context) : base(info, context)
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{
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}
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#endif
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}
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}
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