/// <summary>
/// Create a new assignment target (variable reference) node.
/// </summary>
/// <param name="parent">The parent node that defines this node.</param>
/// <param name="token">Identifier token containing the name of the variable.</param>
protected internal AssignmentTargetNode(AssignmentNode parent, IdentifierToken token)
{
#if DEBUG
if (parent == null)
{
throw new ArgumentNullException("parent");
}
if (token == null)
{
throw new ArgumentNullException("token");
}
#endif
this.Parent = parent;
this.Token = token;
}
/// <summary>
/// Create a new assignment target (variable reference) node.
/// </summary>
/// <param name="parent">The parent node that defines this node.</param>
/// <param name="token">Identifier token containing the name of the variable.</param>
protected internal AssignmentTargetNode(AssignmentNode parent, IdentifierToken token)
{
#if DEBUG
if (parent == null)
throw new ArgumentNullException("parent");
if (token == null)
throw new ArgumentNullException("token");
#endif
this.Parent = parent;
this.Token = token;
}
protected virtual AssignmentNode ParseAssignment(SemanticNode parent, IdentifierToken identifier, AssignmentOperatorToken assignmentOperator)
{
// PARSE: <assignment> ::= <assignment target> assignmentOperator <expression>
// <assignment target> := identifier
AssignmentNode result = new AssignmentNode(parent, identifier, assignmentOperator);
Token token = this.GetNextTokenxx(Preference.NegativeSign);
ExpressionNode expression = this.ParseExpression(result, token);
if (expression == null)
this.ReportParserError(result, SemanticErrors.MissingExpression, token);
else
result.SetContents(expression);
return result;
}
