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implab » ImplabNet
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Implemented typereference parser
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r268:0be8a6ae8307 v3
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@@ -0,0 +1,81
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 } No newline at end of file
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@@ -1,40 +1,53
1 1 using System;
2 using System.Diagnostics;
3 using Implab.Diagnostics;
2 4 using Implab.ServiceHost.Unity;
3 5 using Implab.Xml;
4 6 using Unity;
5 7 using Unity.Injection;
6 8
7 9 namespace Implab.Playground {
8 10
9 11 public class Foo {
10 12 public int IntValue { get; set; }
11 13
12 14 public string StringValue { get; set; }
13 15
14 16 }
15 17
16 18 public class Container<T> {
17 19 public Container() {
18 20
19 21 }
20 22
21 23 public Container(T instance) {
22 24 Instance = instance;
23 25 }
24 26
25 27 public T Instance { get; set; }
26 28 }
27 29
28 30 public class Program {
29 31
30 32 static void Main(string[] args) {
31 33 var container = new UnityContainer();
32 34
33 var containerConfig = SerializationHelpers.DeserializeFromFile<ContainerElement>("data/sample.xml");
35 var listener = new SimpleTraceListener(Console.Out);
36 Trace<ConfigurationContext>.TraceSource.Switch.Level = SourceLevels.All;
37 Trace<ConfigurationContext>.TraceSource.Listeners.Add(listener);
38
39 var c = new Container<int>();
34 40
35 Console.WriteLine($"container: {containerConfig.Registrations.Count}");
41 var cts = new ConfigurationContext();
42 cts.AddNamespace("System");
43 cts.AddNamespace("System.Collections.Generic");
44 cts.AddNamespace("Implab.Playground");
45
46 Console.WriteLine(c.GetType().FullName);
47
48 cts.Resolve("Container{Int32}");
36 49 }
37 50
38 51
39 52 }
40 53 }
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@@ -1,9 +1,58
1 using System;
2 using System.Linq;
3 using System.Text;
4
1 5 namespace Implab.ServiceHost.Unity {
2 6 public class TypeReference {
3 7 public string TypeName { get; set; }
4 8
5 9 public string Namespace { get; set; }
6 10
7 11 public TypeReference[] GenericParameters { get; set; }
12
13 public bool IsArray { get; set; }
14
15 public bool IsOpenGeneric {
16 get {
17 return GenericParameters!=null && GenericParameters.Contains(null);
18 }
19 }
20
21 public bool IsGeneric {
22 get {
23 return GenericParameters != null && GenericParameters.Length > 0;
24 }
25 }
26
27 public override string ToString() {
28 var builder = new StringBuilder();
29
30 if (!string.IsNullOrEmpty(Namespace)) {
31 builder.Append(Namespace);
32 builder.Append('.');
33 }
34
35 if (!string.IsNullOrEmpty(TypeName)) {
36 builder.Append(TypeName);
37 } else {
38 builder.Append("__unnamed__");
39 }
40
41 if (GenericParameters != null && GenericParameters.Length > 0) {
42 builder.Append('{');
43 for(var i = 0; i < GenericParameters.Length; i++) {
44 if (i > 0)
45 builder.Append(',');
46 builder.Append(GenericParameters[i]);
47 }
48 builder.Append('}');
49 }
50
51 return builder.ToString();
52 }
53 public static TypeReference Parse(string text) {
54 var parser = new TypeReferenceParser(text);
55 return parser.Parse();
56 }
8 57 }
9 58 } No newline at end of file
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@@ -1,156 +1,162
1 1 using System;
2 2 using System.Collections.Generic;
3 3 using System.Text.RegularExpressions;
4 4
5 5 namespace Implab.ServiceHost.Unity {
6 public class TypeReferenceParser {
6 internal class TypeReferenceParser {
7 7 enum TokenType {
8 8 None,
9 9
10 10 Word,
11 11
12 12 Dot,
13 13
14 14 Comma,
15 15
16 16 OpenList,
17 17
18 18 CloseList,
19 19
20 20 Eof
21 21 }
22 22
23 readonly Regex _tokens = new Regex(@"(\w+)|\s*([\.{},])\s*");
23 readonly Regex _tokens = new Regex(@"(\w+)|\s*([\.{},\+])\s*");
24 24
25 25 TokenType m_token;
26 26
27 27 string m_tokenValue;
28 28
29 29 int m_pos;
30 30
31 int m_tokenPos;
32
31 33 readonly string m_text;
32 34
33 35 TokenType Token { get { return m_token; } }
34 36
35 37 string TokenValue { get { return m_tokenValue; } }
36 38
39 int TokenPos { get { return m_tokenPos; } }
40
37 41 public TypeReferenceParser(string text) {
38 42 Safe.ArgumentNotEmpty(text, nameof(text));
39 43 m_text = text;
40 44 }
41 45
42 46 bool ReadToken() {
43 47 if (m_pos >= m_text.Length) {
44 48 m_token = TokenType.Eof;
45 49 m_tokenValue = null;
46 50 return false;
47 51 }
48 52
49 53 var m = _tokens.Match(m_text, m_pos);
50 54
51 55 if (m.Success) {
56 m_tokenPos = m_pos;
52 57 m_pos += m.Length;
53 58 if (m.Groups[1].Success) {
54 59 m_token = TokenType.Word;
55 60 m_tokenValue = m.Groups[1].Value;
56 61 } else if (m.Groups[2].Success) {
57 62 m_tokenValue = null;
58 63 switch (m.Groups[2].Value) {
59 64 case "{":
60 65 m_token = TokenType.OpenList;
61 66 break;
62 67 case "}":
63 68 m_token = TokenType.CloseList;
64 69 break;
65 70 case ".":
71 case "+":
66 72 m_token = TokenType.Dot;
67 73 break;
68 74 case ",":
69 75 m_token = TokenType.Comma;
70 76 break;
71 77 }
72 78 }
73 79 return true;
74 80 }
75 81 throw new FormatException($"Failed to parse '{m_text}' at pos {m_pos}");
76 82 }
77 83
78 public TypeRerefence Pase() {
79
84 public TypeReference Parse() {
85 var result = ReadTypeReference();
86 if (ReadToken())
87 ThrowUnexpectedToken();
88 return result;
80 89 }
81 90
82 91 string[] ReadTypeName() {
83 92 var parts = new List<string>();
84 93
85 94 string current = null;
86 95 bool stop = false;
87 96 while ((!stop) && ReadToken()) {
88 97 switch (Token) {
89 98 case TokenType.Word:
90 99 if (current != null)
91 100 ThrowUnexpectedToken();
92 101 current = TokenValue;
93 102 break;
94 103 case TokenType.Dot:
95 104 if (current == null)
96 105 ThrowUnexpectedToken();
97 106 parts.Add(current);
98 107 current = null;
99 108 break;
100 109 default:
101 110 stop = true;
102 111 break;
103 112 }
104 113 }
105 114 if (current != null)
106 115 parts.Add(current);
107 116
108 117 if (parts.Count == 0)
109 118 return null;
110 119
111 120 return parts.ToArray();
112 121 }
113 122
114 123 TypeReference ReadTypeReference() {
115 124
116 125 var parts = ReadTypeName();
117 126 if (parts == null)
118 127 return null;
119 128
120 129 var typeReference = new TypeReference {
121 Namespace = string.Join(",", parts, 0, parts.Length - 1),
130 Namespace = string.Join(".", parts, 0, parts.Length - 1),
122 131 TypeName = parts[parts.Length - 1]
123 132 };
124 133
125 134 switch (Token) {
126 case TokenType.Eof:
127 break;
128 135 case TokenType.OpenList:
129 136 typeReference.GenericParameters = ReadTypeReferenceList();
130 137 if(Token != TokenType.CloseList)
131 138 ThrowUnexpectedToken();
132 break;
133 default:
134 ThrowUnexpectedToken();
139 ReadToken();
135 140 break;
136 141 }
137 142
138 143 return typeReference;
139 144 }
140 145
141 146 TypeReference[] ReadTypeReferenceList() {
142 throw new NotImplementedException();
143 }
147 var list = new List<TypeReference>();
144 148
145 void ReadDot() {
146 if (!ReadToken() || Token != TokenType.Dot)
147 ThrowUnexpectedToken();
149 do {
150 var typeReference = ReadTypeReference();
151 list.Add(typeReference);
152 } while (Token == TokenType.Comma);
153
154 return list.ToArray();
148 155 }
149 156
150 157 void ThrowUnexpectedToken() {
151 throw new FormatException($"Unexpected '{Token}' at {m_pos}");
158 throw new FormatException($"Unexpected '{Token}' at pos {TokenPos}: -->{m_text.Substring(TokenPos, Math.Min(m_text.Length - TokenPos, 10))}");
152 159 }
153 160
154
155 161 }
156 162 } No newline at end of file
General Comments 3
Under Review
sergey
author
Comment #7
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Auto status change to "Under Review"

Approved
sergey
author
Comment #8
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ok, latest stable version should be in default

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