// The Nova Project by Ken Beckett. // Copyright (C) 2007-2012 Inevitable Software, all rights reserved. // Released under the Common Development and Distribution License, CDDL-1.0: http://opensource.org/licenses/cddl1.php using Nova.Parsing; namespace Nova.CodeDOM { /// <summary> /// Signals the end of an iterator. /// </summary> /// <remarks> /// Yield statements must only appear in method, operator, or accessor bodies. /// They must not appear in anonymous functions or a 'finally' clause. /// 'yield' isn't a reserved word - it has special meaning only before a 'return' or 'break'. /// </remarks> public class YieldBreak : YieldStatement { #region /* CONSTRUCTORS */ /// <summary> /// Create a <see cref="YieldBreak"/>. /// </summary> public YieldBreak() { } #endregion #region /* PROPERTIES */ /// <summary> /// The keyword associated with the <see cref="Statement"/>. /// </summary> public override string Keyword { get { return ParseToken1 + " " + ParseToken2; } } #endregion #region /* PARSING */ /// <summary> /// The second token used to parse the code object. /// </summary> public const string ParseToken2 = "break"; /// <summary> /// Parse a <see cref="YieldBreak"/>. /// </summary> public YieldBreak(Parser parser, CodeObject parent) : base(parser, parent) { parser.NextToken(); // Move past 'yield' parser.NextToken(); // Move past 'break' ParseTerminator(parser); } #endregion #region /* FORMATTING */ /// <summary> /// True if the <see cref="Statement"/> has an argument. /// </summary> public override bool HasArgument { get { return false; } } #endregion } }
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