//-----------------------------------------------------------------------
// -----------------------------------------------------------------------
// file="ExpUnaryOperatorNode"
// 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.Text;
using System.Threading.Tasks;

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

        private ExpSyntaxNode _operand;

        private ExpUnaryOperatorNode(Token source) : base(source) { }

        public ExpUnaryOperatorNode(Token source, ExpSyntaxNode operand, ExpSchema context)
            : base(source)
        {
            _operand = operand;
        }

        public override ExpSyntaxNode Left => null!;

        public override ExpSyntaxNode Right => _operand;

        public override IExpElementSource EqualityTypeConvert => _operand.EqualityTypeConvert;

        public static ExpUnaryOperatorNode UnaryMinus(Token source, ExpSyntaxNode operand)
        {
            if (!operand.IsNumber) {
                throw new ExpInvalidTypeException(
                    source, "Number", operand.EqualityTypeConvert.Name);
            }
            bool isFloat =
                    (operand._nodeFlag | ExpNodeFlag.BuiltinType_Real) == 0;
            return new ExpUnaryOperatorNode(source)
            {
                _nodeFlag = ExpNodeFlag.Operator_Unary | ExpNodeFlag.BuiltinType_Number,
                CodeConvertTemplate = "- {0}",
            };
        }

        public static ExpUnaryOperatorNode UnaryNot(Token source, ExpSyntaxNode operand)
        {
            if ((operand._nodeFlag | (ExpNodeFlag.BuiltinType_Logic | ExpNodeFlag.BuiltinType_Logic)) == 0) {
                throw new ExpInvalidTypeException(
                    source, "Bool or Logic", operand.EqualityTypeConvert.Name);
            }
            return new ExpUnaryOperatorNode(source)
            {
                _nodeFlag = ExpNodeFlag.Operator_Unary | ExpNodeFlag.BuiltinType_Logic,
                CodeConvertTemplate = "! {0}",
            };
        }

        public static ExpUnaryOperatorNode UnaryPlus(Token source, ExpSyntaxNode operand)
        {
            if (!operand.IsNumber) {
                throw new ExpInvalidTypeException(
                    source, "Number", operand.EqualityTypeConvert.Name);
            }
            bool isFloat =
                    (operand._nodeFlag | ExpNodeFlag.BuiltinType_Real) == 0;
            return new ExpUnaryOperatorNode(source)
            {
                _nodeFlag = ExpNodeFlag.Operator_Unary | ExpNodeFlag.BuiltinType_Number,
                CodeConvertTemplate = "+ {0}",
            };
        }

    }
}