69 lines
2 KiB
C#
69 lines
2 KiB
C#
using System;
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using System.Collections.Generic;
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namespace AspClassic.Parser;
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/// <summary>
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/// A parse tree for a case clause that compares values.
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/// </summary>
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public sealed class ComparisonCaseClause : CaseClause
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{
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private readonly Location _IsLocation;
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private readonly OperatorType _ComparisonOperator;
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private readonly Location _OperatorLocation;
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private readonly Expression _Operand;
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/// <summary>
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/// The location of the 'Is', if any.
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/// </summary>
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public Location IsLocation => _IsLocation;
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/// <summary>
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/// The comparison operator used in the case clause.
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/// </summary>
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public OperatorType ComparisonOperator => _ComparisonOperator;
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/// <summary>
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/// The location of the comparison operator.
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/// </summary>
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public Location OperatorLocation => _OperatorLocation;
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/// <summary>
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/// The operand of the case clause.
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/// </summary>
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public Expression Operand => _Operand;
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/// <summary>
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/// Constructs a new parse tree for a comparison case clause.
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/// </summary>
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/// <param name="isLocation">The location of the 'Is', if any.</param>
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/// <param name="comparisonOperator">The comparison operator used.</param>
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/// <param name="operatorLocation">The location of the comparison operator.</param>
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/// <param name="operand">The operand of the comparison.</param>
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/// <param name="span">The location of the parse tree.</param>
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public ComparisonCaseClause(Location isLocation, OperatorType comparisonOperator, Location operatorLocation, Expression operand, Span span)
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: base(TreeType.ComparisonCaseClause, span)
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{
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if (operand == null)
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{
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throw new ArgumentNullException("operand");
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}
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if (comparisonOperator < OperatorType.Equals || comparisonOperator > OperatorType.GreaterThanEquals)
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{
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throw new ArgumentOutOfRangeException("comparisonOperator");
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}
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SetParent(operand);
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_IsLocation = isLocation;
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_ComparisonOperator = comparisonOperator;
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_OperatorLocation = operatorLocation;
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_Operand = operand;
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}
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protected override void GetChildTrees(IList<Tree> childList)
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{
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Tree.AddChild(childList, Operand);
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}
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}
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