protected virtual MessageSequenceNode ParseMessages(IMessageSequenceParentNode parent, Token token, MessageType type)
{
// <messages> ::=
// (<unary message>+ <binary message>* [<keyword message>] ) |
// (<binary message>+ [<keyword message>] ) |
// <keyword message>
// <unary message> ::= unarySelector
// <binary message> ::= binarySelector <binary argument>
// <binary argument> ::= <primary> <unary message>*
// <keyword message> ::= (keyword <keyword argument> )+
// <keyword argument> ::= <primary> <unary message>* <binary message>*
if ((token is IdentifierToken) && ((type & MessageType.Unary) != 0))
{
// (<unary message>+ <binary message>* [<keyword message>] )
return(this.ParseUnaryBinaryKeywordMessageSequence(parent, (IdentifierToken)token));
}
if ((token is BinarySelectorToken) && ((type & MessageType.Binary) != 0))
{
// (<binary message>+ [<keyword message>] )
return(this.ParseBinaryKeywordMessageSequence(parent, (BinarySelectorToken)token));
}
if ((token is KeywordToken) && ((type & MessageType.Keyword) != 0))
{
// <keyword message>
return(this.ParseKeywordMessageSequence(parent, (KeywordToken)token));
}
this.ResidueToken = token; // Not for us ... let others give it a try.
return(null);
}
/// <summary>
/// Create a new message sequence.
/// </summary>
/// <param name="parent">Parent node that defines this parse node.</param>
protected MessageSequenceBase(IMessageSequenceParentNode parent)
{
#if DEBUG
if (parent == null)
{
throw new ArgumentNullException("parent");
}
#endif
this.Parent = parent;
}
protected virtual KeywordMessageSequenceNode ParseKeywordMessageSequence(IMessageSequenceParentNode parent, KeywordToken token)
{
// PARSE: <keyword message>
KeywordMessageSequenceNode result = new KeywordMessageSequenceNode(parent);
// NB: ParseKeywordMessage() cannot fail, so we don't check result
KeywordMessageNode message = this.ParseKeywordMessage(result, token);
result.SetContents(message);
return(result);
}
protected virtual BinaryMessageSequenceNode ParseBinaryMessageSequence(IMessageSequenceParentNode parent, BinarySelectorToken selector)
{
// PARSE: <binary message>*
BinaryMessageSequenceNode result = new BinaryMessageSequenceNode(parent);
// NB: ParseBinaryMessage() cannot fail, so we don't check result
BinaryMessageNode message = this.ParseBinaryMessage(result, selector);
Token token = this.GetNextTokenxx(Preference.Default);
BinaryMessageSequenceNode nextMessage = null;
if (token is BinarySelectorToken)
{
nextMessage = this.ParseBinaryMessageSequence(result, (BinarySelectorToken)token);
}
else
{
this.ResidueToken = token;
}
result.SetContents(message, nextMessage);
return(result);
}
protected virtual BinaryKeywordMessageSequenceNode ParseBinaryKeywordMessageSequence(IMessageSequenceParentNode parent, BinarySelectorToken selector)
{
// PARSE: <binary message>+ [<keyword message>]
BinaryKeywordMessageSequenceNode result = new BinaryKeywordMessageSequenceNode(parent);
// NB: ParseBinaryMessage() cannot fail, so we don't check result
BinaryMessageNode message = this.ParseBinaryMessage(result, selector);
Token token = this.GetNextTokenxx(Preference.Default);
BinaryKeywordOrKeywordMessageSequenceNode nextMessage = (BinaryKeywordOrKeywordMessageSequenceNode)
this.ParseMessages(result, token, MessageType.Binary | MessageType.Keyword);
result.SetContents(message, nextMessage);
return(result);
}
protected virtual UnaryBinaryKeywordMessageSequenceNode ParseUnaryBinaryKeywordMessageSequence(IMessageSequenceParentNode parent, IdentifierToken selector)
{
// PARSE: // <unary message>+ <binary message>* [<keyword message>]
UnaryBinaryKeywordMessageSequenceNode result = new UnaryBinaryKeywordMessageSequenceNode(parent);
// NB: ParseUnaryMessage() cannot fail, so we don't check result
UnaryMessageNode message = this.ParseUnaryMessage(result, selector);
Token token = this.GetNextTokenxx(Preference.Default);
MessageSequenceNode nextMessage = this.ParseMessages(result, token, MessageType.All);
result.SetContents(message, nextMessage);
return(result);
}
/// <summary>
/// Create a new message sequence with a keyword message.
/// </summary>
/// <param name="parent">Parent node that defines this parse node.</param>
protected internal KeywordMessageSequenceNode(IMessageSequenceParentNode parent)
: base(parent)
{
}
/// <summary>
/// Create a new message sequence.
/// </summary>
/// <param name="parent">Parent node that defines this parse node.</param>
protected BinaryOrBinaryUnaryMessageSequenceNode(IMessageSequenceParentNode parent)
: base(parent)
{
}
/// <summary>
/// Create a new message sequence.
/// </summary>
/// <param name="parent">Parent node that defines this parse node.</param>
protected MessageSequenceNode(IMessageSequenceParentNode parent)
: base(parent)
{
}
/// <summary>
/// Create a new message sequence.
/// </summary>
/// <param name="parent">Parent node that defines this parse node.</param>
protected BinaryKeywordOrKeywordMessageSequenceNode(IMessageSequenceParentNode parent)
: base(parent)
{
}
protected virtual UnaryBinaryKeywordMessageSequenceNode ParseUnaryBinaryKeywordMessageSequence(IMessageSequenceParentNode parent, IdentifierToken selector)
{
// PARSE: // <unary message>+ <binary message>* [<keyword message>]
UnaryBinaryKeywordMessageSequenceNode result = new UnaryBinaryKeywordMessageSequenceNode(parent);
// NB: ParseUnaryMessage() cannot fail, so we don't check result
UnaryMessageNode message = this.ParseUnaryMessage(result, selector);
Token token = this.GetNextTokenxx(Preference.Default);
MessageSequenceNode nextMessage = this.ParseMessages(result, token, MessageType.All);
result.SetContents(message, nextMessage);
return result;
}
protected virtual MessageSequenceNode ParseMessages(IMessageSequenceParentNode parent, Token token, MessageType type)
{
// <messages> ::=
// (<unary message>+ <binary message>* [<keyword message>] ) |
// (<binary message>+ [<keyword message>] ) |
// <keyword message>
// <unary message> ::= unarySelector
// <binary message> ::= binarySelector <binary argument>
// <binary argument> ::= <primary> <unary message>*
// <keyword message> ::= (keyword <keyword argument> )+
// <keyword argument> ::= <primary> <unary message>* <binary message>*
if ((token is IdentifierToken) && ((type & MessageType.Unary) != 0))
// (<unary message>+ <binary message>* [<keyword message>] )
return this.ParseUnaryBinaryKeywordMessageSequence(parent, (IdentifierToken)token);
if ((token is BinarySelectorToken) && ((type & MessageType.Binary) != 0))
// (<binary message>+ [<keyword message>] )
return this.ParseBinaryKeywordMessageSequence(parent, (BinarySelectorToken)token);
if ((token is KeywordToken) && ((type & MessageType.Keyword) != 0))
// <keyword message>
return this.ParseKeywordMessageSequence(parent, (KeywordToken)token);
this.ResidueToken = token; // Not for us ... let others give it a try.
return null;
}
/// <summary>
/// Parses a message sequence as defined in X3J20 "3.4.5.3 Messages".
/// </summary>
/// <param name="parent"></param>
/// <param name="token">First token of the message node. If the token is message token, it is returned in the residueToken parameter.</param>
/// <returns>Message sequence node or null if the given token is not a message token.</returns>
/// <remarks>
/// This mehtod does not registers errors if the given token is not a message token.
/// The 'offending' token is returned in the residueToken parameter, and it is
/// responsibility of the called to determine what to do.
/// </remarks>
protected virtual MessageSequenceNode ParseMessages(IMessageSequenceParentNode parent, Token token)
{
return this.ParseMessages(parent, token, MessageType.All);
}
protected virtual KeywordMessageSequenceNode ParseKeywordMessageSequence(IMessageSequenceParentNode parent, KeywordToken token)
{
// PARSE: <keyword message>
KeywordMessageSequenceNode result = new KeywordMessageSequenceNode(parent);
// NB: ParseKeywordMessage() cannot fail, so we don't check result
KeywordMessageNode message = this.ParseKeywordMessage(result, token);
result.SetContents(message);
return result;
}
protected virtual BinaryKeywordMessageSequenceNode ParseBinaryKeywordMessageSequence(IMessageSequenceParentNode parent, BinarySelectorToken selector)
{
// PARSE: <binary message>+ [<keyword message>]
BinaryKeywordMessageSequenceNode result = new BinaryKeywordMessageSequenceNode(parent);
// NB: ParseBinaryMessage() cannot fail, so we don't check result
BinaryMessageNode message = this.ParseBinaryMessage(result, selector);
Token token = this.GetNextTokenxx(Preference.Default);
BinaryKeywordOrKeywordMessageSequenceNode nextMessage = (BinaryKeywordOrKeywordMessageSequenceNode)
this.ParseMessages(result, token, MessageType.Binary | MessageType.Keyword);
result.SetContents(message, nextMessage);
return result;
}
/// <summary>
/// Create a new message sequence.
/// </summary>
/// <param name="parent">Parent node that defines this parse node.</param>
protected MessageSequenceNode(IMessageSequenceParentNode parent)
: base(parent)
{
}
protected virtual UnaryBinaryMessageSequenceNode ParseUnaryBinaryMessageSequence(IMessageSequenceParentNode parent, IdentifierToken selector)
{
// PARSE: <unary message>* <binary message>*
UnaryBinaryMessageSequenceNode result = new UnaryBinaryMessageSequenceNode(parent);
// NB: ParseUnaryMessage() cannot fail, so we don't check result
UnaryMessageNode message = this.ParseUnaryMessage(result, selector);
Token token = this.GetNextTokenxx(Preference.Default);
BinaryOrBinaryUnaryMessageSequenceNode nextMessage = null;
if (token is IdentifierToken)
// <unary message>*
nextMessage = this.ParseUnaryBinaryMessageSequence(result, (IdentifierToken)token);
else if (token is BinarySelectorToken)
// <binary message>*
nextMessage = this.ParseBinaryMessageSequence(result, (BinarySelectorToken)token);
else
this.ResidueToken = token;
result.SetContents(message, nextMessage);
return result;
}
/// <summary>
/// Create a new message sequence.
/// </summary>
/// <param name="parent">Parent node that defines this parse node.</param>
protected BinaryOrBinaryUnaryMessageSequenceNode(IMessageSequenceParentNode parent)
: base(parent)
{
}
/// <summary>
/// Create a new message sequence.
/// </summary>
/// <param name="parent">Parent node that defines this parse node.</param>
protected MessageSequenceBase(IMessageSequenceParentNode parent)
{
#if DEBUG
if (parent == null)
throw new ArgumentNullException("parent");
#endif
this.Parent = parent;
}
/// <summary>
/// Create a new message sequence starting with a unary message.
/// </summary>
/// <param name="parent">Parent node that defines this parse node.</param>
protected internal UnaryMessageSequenceNode(IMessageSequenceParentNode parent)
: base(parent)
{
}
/// <summary>
/// Create a new message sequence starting with a binary message.
/// </summary>
/// <param name="parent">Parent node that defines this parse node.</param>
protected internal BinaryKeywordMessageSequenceNode(IMessageSequenceParentNode parent)
: base(parent)
{
}
/// <summary>
/// Parses a message sequence as defined in X3J20 "3.4.5.3 Messages".
/// </summary>
/// <param name="parent"></param>
/// <param name="token">First token of the message node. If the token is message token, it is returned in the residueToken parameter.</param>
/// <returns>Message sequence node or null if the given token is not a message token.</returns>
/// <remarks>
/// This method does not registers errors if the given token is not a message token.
/// The 'offending' token is returned in the residueToken parameter, and it is
/// responsibility of the called to determine what to do.
/// </remarks>
protected virtual MessageSequenceNode ParseMessages(IMessageSequenceParentNode parent, Token token)
{
return(this.ParseMessages(parent, token, MessageType.All));
}
/// <summary>
/// Create a new message sequence starting with a binary message.
/// </summary>
/// <param name="parent">Parent node that defines this parse node.</param>
protected internal BinaryMessageSequenceNode(IMessageSequenceParentNode parent)
: base(parent)
{
}
/// <summary>
/// Create a new message sequence.
/// </summary>
/// <param name="parent">Parent node that defines this parse node.</param>
protected BinaryKeywordOrKeywordMessageSequenceNode(IMessageSequenceParentNode parent)
: base(parent)
{
}
