//-----------------------------------------------------------------------
// -----------------------------------------------------------------------
// file="ExpRangeAndIndexNode"
// 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.Linq;
using System.Linq.Expressions;
using System.Text;
using System.Threading.Tasks;

namespace StgSharp.Script.Express
{
    public class ExpIndexNode : ExpSyntaxNode
    {

        private const string _codeTemplate = @"[{0}]";

        private ExpSyntaxNode _index;

        internal ExpIndexNode(Token t, ExpSyntaxNode node)
            : base(t)
        {
            _index = node;
            CodeConvertTemplate = _codeTemplate;
        }

        public override ExpSyntaxNode Left => _index;

        public override ExpSyntaxNode Right => Empty;

        public override IExpElementSource EqualityTypeConvert => throw new NotImplementedException();

        public static ExpIndexNode IndexAt(Token position, ExpSyntaxNode expression)
        {
            ArgumentNullException.ThrowIfNull(expression);
            if (ExpNodeFlag.BuiltinType_Int.IsNotInFlag(expression.NodeFlag)) {
                throw new ExpInvalidTypeException(
                    position, "Integer", expression.EqualityTypeConvert.Name);
            }
            return new ExpIndexNode(position, expression);
        }

    }

    public class ExpRangeNode : ExpSyntaxNode
    {

        private const string _codeTemplate = "[{0}..{1}]";

        private ExpSyntaxNode _begin, _end;

        internal ExpRangeNode(Token t, ExpSyntaxNode begin, ExpSyntaxNode end)
            : base(t)
        {
            _begin = begin;
            _end = end;
            CodeConvertTemplate = _codeTemplate;
        }

        public override ExpSyntaxNode Left => _begin;

        public override ExpSyntaxNode Right => _end;

        public override IExpElementSource EqualityTypeConvert => ExpInstantiableElement.Void;

        public static ExpRangeNode RangeNode(Token position, ExpSyntaxNode beginNode, ExpSyntaxNode endNode)
        {
            ArgumentNullException.ThrowIfNull(beginNode);
            ArgumentNullException.ThrowIfNull(endNode);
            if (ExpNodeFlag.BuiltinType_Int.IsNotInFlag(beginNode.NodeFlag)) {
                throw new ExpInvalidTypeException(
                    position, "Integer", beginNode.EqualityTypeConvert.Name);
            }
            if (ExpNodeFlag.BuiltinType_Int.IsNotInFlag(endNode.NodeFlag)) {
                throw new ExpInvalidTypeException(
                    position, "Integer", endNode.EqualityTypeConvert.Name);
            }
            return new ExpRangeNode(position, beginNode, endNode);
        }

    }

    public class ExpCollectionExpressionNode : ExpSyntaxNode
    {

        internal ExpCollectionExpressionNode(Token t, ExpTupleNode tupleNode) : base(t) { }

        public override ExpSyntaxNode Left => throw new NotImplementedException();

        public override ExpSyntaxNode Right => throw new NotImplementedException();

        public override IExpElementSource EqualityTypeConvert => throw new NotImplementedException();

    }
}