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| 1 | +using System; |
| 2 | +using System.Collections.Generic; |
| 3 | +using System.Diagnostics.Contracts; |
| 4 | +using System.Linq; |
| 5 | +using System.Xml.Linq; |
| 6 | +using ReClassNET.Logger; |
| 7 | +using ReClassNET.Nodes; |
| 8 | + |
| 9 | +namespace ReClassNET.DataExchange |
| 10 | +{ |
| 11 | + [ContractClass(typeof(ICustomNodeConverterContract))] |
| 12 | + public interface ICustomNodeConverter |
| 13 | + { |
| 14 | + /// <summary>Determine if the instance can handle the xml element.</summary> |
| 15 | + /// <param name="element">The xml element to check.</param> |
| 16 | + /// <returns>True if the instance can handle the element, false if not.</returns> |
| 17 | + bool CanHandleElement(XElement element); |
| 18 | + |
| 19 | + /// <summary>Determine if the instance can handle the node.</summary> |
| 20 | + /// <param name="node">The node to check.</param> |
| 21 | + /// <returns>True if the instance can handle the node, false if not.</returns> |
| 22 | + bool CanHandleNode(BaseNode node); |
| 23 | + |
| 24 | + /// <summary>Creates a schema node from the xml element. This method gets only called if <see cref="CanHandleElement(XElement)"/> returned true.</summary> |
| 25 | + /// <param name="element">The element to create the schema from.</param> |
| 26 | + /// <param name="classes">The list of classes which correspond to the schema.</param> |
| 27 | + /// <param name="logger">The logger used to output messages.</param> |
| 28 | + /// <returns>The schema node for the xml element.</returns> |
| 29 | + BaseNode CreateNodeFromElement(XElement element, ClassNode parent, IEnumerable<ClassNode> classes, ILogger logger); |
| 30 | + |
| 31 | + /// <summary>Creates a xml element from the schema node. This method gets only called if <see cref="CanHandleSchema(SchemaCustomNode)"/> returned true.</summary> |
| 32 | + /// <param name="node">The schema node to create the xml element from.</param> |
| 33 | + /// <param name="logger">The logger used to output messages.</param> |
| 34 | + /// <returns>The xml element for the schema node.</returns> |
| 35 | + XElement CreateElementFromNode(BaseNode node, ILogger logger); |
| 36 | + } |
| 37 | + |
| 38 | + [ContractClassFor(typeof(ICustomNodeConverter))] |
| 39 | + internal abstract class ICustomNodeConverterContract : ICustomNodeConverter |
| 40 | + { |
| 41 | + public bool CanHandleElement(XElement element) |
| 42 | + { |
| 43 | + Contract.Requires(element != null); |
| 44 | + |
| 45 | + throw new NotImplementedException(); |
| 46 | + } |
| 47 | + |
| 48 | + public bool CanHandleNode(BaseNode node) |
| 49 | + { |
| 50 | + Contract.Requires(node != null); |
| 51 | + |
| 52 | + throw new NotImplementedException(); |
| 53 | + } |
| 54 | + |
| 55 | + public BaseNode CreateNodeFromElement(XElement element, ClassNode parent, IEnumerable<ClassNode> classes, ILogger logger) |
| 56 | + { |
| 57 | + Contract.Requires(element != null); |
| 58 | + Contract.Requires(CanHandleElement(element)); |
| 59 | + Contract.Requires(parent != null); |
| 60 | + Contract.Requires(classes != null); |
| 61 | + Contract.Requires(Contract.ForAll(classes, c => c != null)); |
| 62 | + Contract.Requires(logger != null); |
| 63 | + Contract.Ensures(Contract.Result<BaseNode>() != null); |
| 64 | + |
| 65 | + throw new NotImplementedException(); |
| 66 | + } |
| 67 | + |
| 68 | + public XElement CreateElementFromNode(BaseNode node, ILogger logger) |
| 69 | + { |
| 70 | + Contract.Requires(node != null); |
| 71 | + Contract.Requires(CanHandleNode(node)); |
| 72 | + Contract.Requires(logger != null); |
| 73 | + Contract.Ensures(Contract.Result<XElement>() != null); |
| 74 | + |
| 75 | + throw new NotImplementedException(); |
| 76 | + } |
| 77 | + } |
| 78 | + |
| 79 | + public class CustomNodeConvert |
| 80 | + { |
| 81 | + private static readonly List<ICustomNodeConverter> converters = new List<ICustomNodeConverter>(); |
| 82 | + |
| 83 | + public static void RegisterCustomType(ICustomNodeConverter converter) |
| 84 | + { |
| 85 | + Contract.Requires(converter != null); |
| 86 | + |
| 87 | + converters.Add(converter); |
| 88 | + } |
| 89 | + |
| 90 | + public static void DeregisterCustomType(ICustomNodeConverter converter) |
| 91 | + { |
| 92 | + Contract.Requires(converter != null); |
| 93 | + |
| 94 | + converters.Remove(converter); |
| 95 | + } |
| 96 | + |
| 97 | + public static ICustomNodeConverter GetReadConverter(XElement element) |
| 98 | + { |
| 99 | + Contract.Requires(element != null); |
| 100 | + |
| 101 | + return converters.Where(c => c.CanHandleElement(element)).FirstOrDefault(); |
| 102 | + } |
| 103 | + |
| 104 | + public static ICustomNodeConverter GetWriteConverter(BaseNode node) |
| 105 | + { |
| 106 | + Contract.Requires(node != null); |
| 107 | + |
| 108 | + return converters.Where(c => c.CanHandleNode(node)).FirstOrDefault(); |
| 109 | + } |
| 110 | + } |
| 111 | +} |
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