using System.Collections.Generic;

namespace WasmBox.Wasm.Interpret {
    /// <summary>
    /// Defines a base class for function definitions.
    /// </summary>
    public abstract class FunctionDefinition {
        /// <summary>
        /// Gets this function definition's list of parameter types.
        /// </summary>
        /// <returns>The list of parameter types.</returns>
        public abstract IReadOnlyList<WasmValueType> ParameterTypes { get; }

        /// <summary>
        /// Gets this function definition's list of return types.
        /// </summary>
        /// <returns>The list of return types.</returns>
        public abstract IReadOnlyList<WasmValueType> ReturnTypes { get; }

        /// <summary>
        /// Invokes this function with the given argument list.
        /// </summary>
        /// <param name="arguments">The list of arguments for this function's parameters.</param>
        /// <param name="context">Context the function is running in</param>
        /// <returns>The list of return values.</returns>
        public abstract IReadOnlyList<object> Invoke(IReadOnlyList<object> arguments, InterpreterContext context = null);
    }
}