using System;
using System.Reflection;

namespace Cryville.Common.Pdt {
	/// <summary>
	/// Interpreter for fragments in Property Definition Tree (PDT) file format.
	/// </summary>
	public class PdtFragmentInterpreter : PdtInterpreter {
		public PdtFragmentInterpreter() : base(null, new EmptyBinder()) { }

		/// <summary>
		/// Sets the new source string for the fragment interpreter and resets the position.
		/// </summary>
		/// <param name="value">The new source string.</param>
		public void SetSource(string value) {
			Source = value;
			Position = 0;
		}

		/// <summary>
		/// The binder.
		/// </summary>
		public Binder Binder {
			get { return _binder; }
			set { _binder = value; }
		}

		/// <summary>
		/// Reads the current character and increments the position.
		/// </summary>
		/// <returns>The current character.</returns>
		/// <exception cref="IndexOutOfRangeException">The end of the source string is reached.</exception>
		public new char GetChar() { return base.GetChar(); }
		/// <summary>
		/// Reads an identifier.
		/// </summary>
		/// <returns>An identifier.</returns>
		/// <exception cref="IndexOutOfRangeException">The end of the source string is reached.</exception>
		public new string GetIdentifier() { return base.GetIdentifier(); }
		/// <summary>
		/// Reads a number.
		/// </summary>
		/// <returns>A number.</returns>
		/// <exception cref="IndexOutOfRangeException">The end of the source string is reached.</exception>
		public new string GetNumber() { return base.GetNumber(); }
		/// <summary>
		/// Reads a string.
		/// </summary>
		/// <returns>A string.</returns>
		/// <exception cref="IndexOutOfRangeException">The end of the source string is reached.</exception>
		public new string GetString() { return base.GetString(); }
		/// <summary>
		/// Reads an expression.
		/// </summary>
		/// <returns>An expression.</returns>
		/// <exception cref="IndexOutOfRangeException">The end of the source string is reached.</exception>
		public new PdtExpression GetExp() { return base.GetExp(); }
	}
}