/// <summary>
/// Create and initialize a new TemporaryVariableNode.
/// </summary>
/// <param name="parent">The function node that defines this temporary variable.</param>
/// <param name="token">Identifier token containing the variable name.</param>
protected internal TemporaryVariableNode(FunctionNode parent, IdentifierToken token)
: base(token)
{
#if DEBUG
if (parent == null)
{
throw new ArgumentNullException("parent");
}
#endif
this.Parent = parent;
}
/// <summary>
/// Create and initialize a new TemporaryVariableNode.
/// </summary>
/// <param name="parent">The function node that defines this temporary variable.</param>
/// <param name="token">Identifier token containing the variable name.</param>
protected internal TemporaryVariableNode(FunctionNode parent, IdentifierToken token)
: base(token)
{
#if DEBUG
if (parent == null)
throw new ArgumentNullException("parent");
#endif
this.Parent = parent;
}
protected virtual ParseTemporariesResult ParseTemporaries(FunctionNode function, Token token)
{
// PARSE: <temporaries> ::= '|' <temporary variable list> '|'
ParseTemporariesResult result = new ParseTemporariesResult();
if (!(token is VerticalBarToken))
{
this.ResidueToken = token;
return result;
}
result.LeftBar = (VerticalBarToken)token;
while (true)
{
token = this.GetNextTokenxx(Preference.VerticalBar);
if (token is VerticalBarToken)
{
// Done with temp variables.
result.RightBar = (VerticalBarToken)token;
return result;
}
if (token is IdentifierToken)
{
result.Temporaries.Add(new TemporaryVariableNode(function, (IdentifierToken)token));
}
else
{
this.ReportParserError(function, SemanticErrors.MissingClosingTempBar, token);
this.ResidueToken = token;
return result;
}
}
}