Mercurial > pub > ImplabNet

comparison Implab.ServiceHost/Unity/ConfigurationContext.cs @ 268:0be8a6ae8307 v3

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Implemented typereference parser
author cin
date Sun, 22 Apr 2018 15:29:10 +0300
parents
children ff581cff7003
comparison
equal deleted inserted replaced
267:6b3e5c48131b 268:0be8a6ae8307
1 using System;
2 using System.Collections.Generic;
3 using System.Text.RegularExpressions;
4 using Implab.Diagnostics;
5
6 namespace Implab.ServiceHost.Unity {
7 using System.Linq;
8 using System.Text;
9 using static Trace<ConfigurationContext>;
10
11 public class ConfigurationContext {
12 Regex _nsRx = new Regex(@"^\w+(\.\w+)*$", RegexOptions.Compiled);
13 readonly LinkedList<string> m_namespases = new LinkedList<string>();
14
15 LinkedListNode<string> m_insertAt;
16
17 public ConfigurationContext() {
18 m_insertAt = new LinkedListNode<string>(string.Empty);
19 m_namespases.AddFirst(m_insertAt);
20 }
21
22 public void AddNamespace(string ns) {
23 Safe.ArgumentMatch(ns, nameof(ns), _nsRx);
24 if (m_insertAt != null)
25 m_namespases.AddAfter(m_insertAt, ns);
26 else
27 m_namespases.AddFirst(ns);
28 }
29
30 public Type Resolve(TypeReference reference) {
31 Safe.ArgumentNotNull(reference, nameof(reference));
32
33 var args = reference.IsGeneric && !reference.IsOpenGeneric ? reference.GenericParameters?.Select(Resolve).ToArray() : null;
34 var argc = reference.IsGeneric ? reference.GenericParameters.Length : 0;
35
36 foreach (var ns in m_namespases) {
37 var typeName = FormatName(new [] { ns, reference.Namespace, reference.TypeName}, argc, args, reference.IsArray);
38
39 var resolved = Type.GetType(typeName, false);
40 if (resolved != null) {
41 Log("Probe succeed {0} in '{1}': {2} -> {3}", reference, ns, typeName, resolved.FullName);
42 return resolved;
43 } else {
44 Log("Probe failed {0} in '{1}': {2}", reference, ns, typeName);
45 }
46 }
47
48 throw new Exception($"Failed to resolve: {reference}");
49 }
50
51 string FormatName(string[] parts, int argc, Type[] args, bool isArray) {
52 var builder = new StringBuilder();
53
54 builder.Append(String.Join(".", parts.Where(x => !string.IsNullOrEmpty(x))));
55 if (argc > 0) {
56 builder.Append('`');
57 builder.Append(argc);
58 }
59
60 if (args!= null && args.Length > 0) {
61 builder.Append('[');
62 builder.Append(string.Join(",", args.Select(x => x.FullName)));
63 builder.Append(']');
64 }
65
66 if(isArray)
67 builder.Append("[]");
68
69 return builder.ToString();
70 }
71
72 public Type Resolve(string typeReference) {
73 return Resolve(TypeReference.Parse(typeReference));
74 }
75
76 public void Register(ServiceElement descriptor) {
77
78 }
79
80 }
81 }