src/OneScript.Core/Values/BslValue.cs - develop - smwwiki/OneScript_fork

src/OneScript.Core/Values/BslValue.cs
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EvilBeaver
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24 апр 2024, 13:50
24 апр 2024, 13:50ebfc286
/*----------------------------------------------------------
This Source Code Form is subject to the terms of the
Mozilla Public License, v.2.0. If a copy of the MPL
was not distributed with this file, You can obtain one
at http://mozilla.org/MPL/2.0/.
----------------------------------------------------------*/

using System;
using System.Dynamic;
using OneScript.Exceptions;
using OneScript.Types;
using ScriptEngine.Machine;

namespace OneScript.Values
{
    public abstract class BslValue : DynamicObject, IComparable<BslValue>, IEquatable<BslValue>, IValue
    {
        protected virtual string ConvertToString() => ToString();

        public abstract int CompareTo(BslValue other);

        public abstract bool Equals(BslValue other);
        
        public static explicit operator string(BslValue value) => value.ConvertToString();

        public static explicit operator bool(BslValue target) =>
            target switch
            {
                BslBooleanValue v => (bool) v,
                BslNumericValue nv => (bool) nv,
                BslStringValue sv => (bool) sv,
                _ => throw BslExceptions.ConvertToBooleanException()
            };

        public static explicit operator decimal(BslValue target) =>
            target switch
            {
                BslNumericValue v => (decimal) v,
                BslStringValue sv => (decimal) sv,
                BslBooleanValue bv => (decimal) bv,
                _ => throw BslExceptions.ConvertToNumberException(target)
            };

        public static explicit operator int(BslValue target) =>
            target switch
            {
                BslNumericValue v => (int) (decimal) v,
                BslStringValue sv => (int) (decimal) sv,
                BslBooleanValue bv => (int) (decimal) bv,
                _ => throw BslExceptions.ConvertToNumberException()
            };

        public static explicit operator DateTime(BslValue target) =>
            target switch
            {
                BslDateValue v => (DateTime) v,
                BslStringValue sv => (DateTime) sv,
                _ => throw BslExceptions.ConvertToDateException()
            };

        #region Stack Runtime Bridge

        public virtual TypeDescriptor SystemType => BasicTypes.UnknownType;

        public virtual int CompareTo(IValue other) => CompareTo((BslValue) other?.GetRawValue());

        public virtual bool Equals(IValue other) => Equals((BslValue) other?.GetRawValue());

        public virtual IValue GetRawValue() => this;

        #endregion
    }
}