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AspClassic.Parser/LiteralExpression.cs

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+#define DEBUG
+using System.Diagnostics;
+
+namespace AspClassic.Parser;
+
+/// <summary>
+/// A parse tree for a literal expression.
+/// </summary>
+public abstract class LiteralExpression : Expression
+{
+	public sealed override bool IsConstant => true;
+
+	public abstract object Value { get; }
+
+	protected LiteralExpression(TreeType type, Span span)
+		: base(type, span)
+	{
+		Debug.Assert(type >= TreeType.StringLiteralExpression && type <= TreeType.BooleanLiteralExpression);
+	}
+}