﻿// Copyright (c) 2013 SharpYaml - Alexandre Mutel
// 
// 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.
// 
// -------------------------------------------------------------------------------
// SharpYaml is a fork of YamlDotNet https://github.com/aaubry/YamlDotNet
// published with the following license:
// -------------------------------------------------------------------------------
// 
// Copyright (c) 2008, 2009, 2010, 2011, 2012 Antoine Aubry
// 
// 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 SharpYaml.Events;

namespace SharpYaml.Serialization.Serializers
{
	public abstract class ScalarSerializerBase : IYamlSerializable
	{
		public object ReadYaml(ref ObjectContext objectContext)
		{
            var scalar = objectContext.Reader.Expect<Scalar>();
            return ConvertFrom(ref objectContext, scalar);
		}

		public abstract object ConvertFrom(ref ObjectContext context, Scalar fromScalar);

		public void WriteYaml(ref ObjectContext objectContext)
		{
            var value = objectContext.Instance;
			var typeOfValue = value.GetType();

		    var context = objectContext.SerializerContext;

            var isSchemaImplicitTag = context.Schema.IsTagImplicit(objectContext.Tag);
			var scalar = new ScalarEventInfo(value, typeOfValue)
				{
					IsPlainImplicit = isSchemaImplicitTag,
					Style = ScalarStyle.Plain,
					Anchor = objectContext.Anchor,
                    Tag = objectContext.Tag,
				};


			// Parse default types 
			switch (Type.GetTypeCode(typeOfValue))
			{
				case TypeCode.Object:
				case TypeCode.String:
				case TypeCode.Char:
					scalar.Style = ScalarStyle.Any;
					break;
			}

            scalar.RenderedValue = ConvertTo(ref objectContext);

		    // Emit the scalar
			WriteScalar(ref objectContext, scalar);
		}

        /// <summary>
        /// Writes the scalar to the <see cref="SerializerContext.Writer"/>. See remarks.
        /// </summary>
        /// <param name="objectContext">The object context.</param>
        /// <param name="scalar">The scalar.</param>
        /// <remarks>
        /// This method can be overloaded to replace the converted scalar just before writing it.
        /// </remarks>
	    protected virtual void WriteScalar(ref ObjectContext objectContext, ScalarEventInfo scalar)
	    {
            // Emit the scalar
            objectContext.SerializerContext.Writer.Emit(scalar);
        }

		public abstract string ConvertTo(ref ObjectContext objectContext);
	}
}