using System.Collections.Generic;

namespace Expressive.Expressions
{
    /// <summary>
    /// Interface definition for an expression that can be evaluated.
    /// </summary>
    /// <remarks>
    /// These are exposed as parameters inside a function.
    /// </remarks>
    public interface IExpression
    {
        /// <summary>
        /// Forces this <see cref="IExpression"/> to be evaluated.
        /// </summary>
        /// <param name="variables">The list of variables for use in evaluating.</param>
        /// <returns>The result of the <see cref="IExpression"/>.</returns>
        object Evaluate(IDictionary<string, object> variables);
    }
}