//-----------------------------------------------------------------------
// -----------------------------------------------------------------------
// file="ExpFunction"
// Project: StgSharp
// AuthorGroup: Nitload Space
// Copyright (c) Nitload Space. All rights reserved.
//     
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.
//     
// -----------------------------------------------------------------------
// -----------------------------------------------------------------------
using System;
using System.Collections.Generic;
using System.Text;

namespace StgSharp.Script.Express
{
    public class ExpFunctionSource : ExpImmutableElement
    {

        private ScriptSourceTransmitter _transmitter;
        private string _name;

        public ExpFunctionSource(string name, ScriptSourceTransmitter transmitter)
        {
            _name = name;
            _transmitter = transmitter;
        }

        public Dictionary<string, ExpElementInstance> FuncParams { get; init; } = new Dictionary<string, ExpElementInstance>(
            );

        public Dictionary<string, ExpElementInstance> LocalVariables { get; init; } = new Dictionary<string, ExpElementInstance>(
            );

        public override ExpElementType ElementType => ExpElementType.Function;

        public ExpInstantiableElement ReturningType { get; protected set; }

        public override IScriptSourceProvider SourceProvider => _transmitter;

        public override string Name => _name;

        public string CallingFormat { get; private set; }

        public override void Analyse()
        {
            throw new NotImplementedException();
            /*
             * generate parameter list,
             * generate C# code
             * generate calling syntax
             */
        }

        public override ExpSyntaxNode MakeReference(params object[] options)
        {
            throw new NotImplementedException();
        }

        public override bool TryGetMember(string name, out ExpSyntaxNode memberNode)
        {
            if (FuncParams.TryGetValue(name, out ExpElementInstance? param))
            {
                memberNode = param;
                return true;
            }
            if (LocalVariables.TryGetValue(name, out ExpElementInstance? variable))
            {
                memberNode = variable;
                return true;
            }
            memberNode = ExpSyntaxNode.Empty;
            return false;
        }

    }
}