1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
|
//
// ResolveFromXmlStep.cs
//
// Author:
// Jb Evain (jbevain@gmail.com)
//
// (C) 2006 Jb Evain
// (C) 2007 Novell, Inc.
// Copyright 2013 Xamarin Inc.
//
// 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 SR = System.Reflection;
using System.Text;
using System.Text.RegularExpressions;
using System.Xml.XPath;
using Mono.Cecil;
namespace Mono.Linker.Steps {
public class XmlResolutionException : Exception {
public XmlResolutionException (string message, Exception innerException)
: base (message, innerException)
{
}
}
public class ResolveFromXmlStep : ResolveStep {
static readonly string _signature = "signature";
static readonly string _fullname = "fullname";
static readonly string _required = "required";
static readonly string _preserve = "preserve";
static readonly string _ns = string.Empty;
XPathDocument _document;
string _xmlDocumentLocation;
public ResolveFromXmlStep (XPathDocument document, string xmlDocumentLocation = "<unspecified>")
{
_document = document;
_xmlDocumentLocation = xmlDocumentLocation;
}
protected override void Process ()
{
XPathNavigator nav = _document.CreateNavigator ();
nav.MoveToFirstChild ();
// This step can be created with XML files that aren't necessarily
// linker descriptor files. So bail if we don't have a <linker> element.
if (nav.LocalName != "linker")
return;
try {
ProcessAssemblies (Context, nav.SelectChildren ("assembly", _ns));
} catch (Exception ex) {
throw new XmlResolutionException (string.Format ("Failed to process XML description: {0}", _xmlDocumentLocation), ex);
}
}
void ProcessAssemblies (LinkContext context, XPathNodeIterator iterator)
{
while (iterator.MoveNext ()) {
AssemblyDefinition assembly = GetAssembly (context, GetFullName (iterator.Current));
if (GetTypePreserve (iterator.Current) == TypePreserve.All) {
foreach (var type in assembly.MainModule.Types)
MarkAndPreserveAll (type);
} else {
ProcessTypes (assembly, iterator.Current.SelectChildren ("type", _ns));
ProcessNamespaces (assembly, iterator.Current.SelectChildren ("namespace", _ns));
}
}
}
void ProcessNamespaces (AssemblyDefinition assembly, XPathNodeIterator iterator)
{
while (iterator.MoveNext ()) {
string fullname = GetFullName (iterator.Current);
foreach (TypeDefinition type in assembly.MainModule.Types) {
if (type.Namespace != fullname)
continue;
MarkAndPreserveAll (type);
}
}
}
void MarkAndPreserveAll (TypeDefinition type)
{
Annotations.Mark (type);
Annotations.SetPreserve (type, TypePreserve.All);
if (!type.HasNestedTypes)
return;
foreach (TypeDefinition nested in type.NestedTypes)
MarkAndPreserveAll (nested);
}
void ProcessTypes (AssemblyDefinition assembly, XPathNodeIterator iterator)
{
while (iterator.MoveNext ()) {
XPathNavigator nav = iterator.Current;
string fullname = GetFullName (nav);
if (IsTypePattern (fullname)) {
ProcessTypePattern (fullname, assembly, nav);
continue;
}
TypeDefinition type = assembly.MainModule.GetType (fullname);
if (type == null) {
if (assembly.MainModule.HasExportedTypes) {
foreach (var exported in assembly.MainModule.ExportedTypes) {
if (fullname == exported.FullName) {
Annotations.Mark (exported);
Annotations.Mark (assembly.MainModule);
var resolvedExternal = exported.Resolve ();
if (resolvedExternal != null) {
type = resolvedExternal;
break;
}
}
}
}
}
if (type == null)
continue;
ProcessType (type, nav);
}
}
static bool IsTypePattern (string fullname)
{
return fullname.IndexOf ("*") != -1;
}
static Regex CreateRegexFromPattern (string pattern)
{
return new Regex (pattern.Replace(".", @"\.").Replace("*", "(.*)"));
}
void MatchType (TypeDefinition type, Regex regex, XPathNavigator nav)
{
if (regex.Match (type.FullName).Success)
ProcessType (type, nav);
if (!type.HasNestedTypes)
return;
foreach (var nt in type.NestedTypes)
MatchType (nt, regex, nav);
}
void MatchExportedType (ExportedType exportedType, ModuleDefinition module, Regex regex, XPathNavigator nav)
{
if (regex.Match (exportedType.FullName).Success) {
Annotations.Mark (exportedType);
Annotations.Mark (module);
TypeDefinition type = null;
try {
type = exportedType.Resolve ();
}
catch (AssemblyResolutionException) {
}
if (type != null) {
ProcessType (type, nav);
}
}
}
void ProcessTypePattern (string fullname, AssemblyDefinition assembly, XPathNavigator nav)
{
Regex regex = CreateRegexFromPattern (fullname);
foreach (TypeDefinition type in assembly.MainModule.Types) {
MatchType (type, regex, nav);
}
if (assembly.MainModule.HasExportedTypes) {
foreach (var exported in assembly.MainModule.ExportedTypes) {
MatchExportedType(exported, assembly.MainModule, regex, nav);
}
}
}
void ProcessType (TypeDefinition type, XPathNavigator nav)
{
TypePreserve preserve = GetTypePreserve (nav);
if (!IsRequired (nav)) {
Annotations.SetPreserve (type, preserve);
return;
}
Annotations.Mark (type);
if (type.IsNested) {
var parent = type;
while (parent.IsNested) {
parent = parent.DeclaringType;
Annotations.Mark (parent);
}
}
if (preserve != TypePreserve.Nothing)
Annotations.SetPreserve (type, preserve);
if (nav.HasChildren) {
MarkSelectedFields (nav, type);
MarkSelectedMethods (nav, type);
}
}
void MarkSelectedFields (XPathNavigator nav, TypeDefinition type)
{
XPathNodeIterator fields = nav.SelectChildren ("field", _ns);
if (fields.Count == 0)
return;
ProcessFields (type, fields);
}
void MarkSelectedMethods (XPathNavigator nav, TypeDefinition type)
{
XPathNodeIterator methods = nav.SelectChildren ("method", _ns);
if (methods.Count == 0)
return;
ProcessMethods (type, methods);
}
static TypePreserve GetTypePreserve (XPathNavigator nav)
{
string attribute = GetAttribute (nav, _preserve);
if (attribute == null || attribute.Length == 0)
return nav.HasChildren ? TypePreserve.Nothing : TypePreserve.All;
try {
return (TypePreserve) Enum.Parse (typeof (TypePreserve), attribute, true);
} catch {
return TypePreserve.Nothing;
}
}
void ProcessFields (TypeDefinition type, XPathNodeIterator iterator)
{
while (iterator.MoveNext ()) {
string value = GetSignature (iterator.Current);
if (!String.IsNullOrEmpty (value))
ProcessFieldSignature (type, value);
value = GetAttribute (iterator.Current, "name");
if (!String.IsNullOrEmpty (value))
ProcessFieldName (type, value);
}
}
void ProcessFieldSignature (TypeDefinition type, string signature)
{
FieldDefinition field = GetField (type, signature);
MarkField (type, field, signature);
}
void MarkField (TypeDefinition type, FieldDefinition field, string signature)
{
if (field != null)
Annotations.Mark (field);
else
AddUnresolveMarker (string.Format ("T: {0}; F: {1}", type, signature));
}
void ProcessFieldName (TypeDefinition type, string name)
{
if (!type.HasFields)
return;
foreach (FieldDefinition field in type.Fields)
if (field.Name == name)
MarkField (type, field, name);
}
static FieldDefinition GetField (TypeDefinition type, string signature)
{
if (!type.HasFields)
return null;
foreach (FieldDefinition field in type.Fields)
if (signature == GetFieldSignature (field))
return field;
return null;
}
static string GetFieldSignature (FieldDefinition field)
{
return field.FieldType.FullName + " " + field.Name;
}
void ProcessMethods (TypeDefinition type, XPathNodeIterator iterator)
{
while (iterator.MoveNext()) {
string value = GetSignature (iterator.Current);
if (!String.IsNullOrEmpty (value))
ProcessMethodSignature (type, value);
value = GetAttribute (iterator.Current, "name");
if (!String.IsNullOrEmpty (value))
ProcessMethodName (type, value);
}
}
void ProcessMethodSignature (TypeDefinition type, string signature)
{
MethodDefinition meth = GetMethod (type, signature);
MarkMethod (type, meth, signature);
}
void MarkMethod (TypeDefinition type, MethodDefinition method, string signature)
{
if (method != null) {
Annotations.Mark (method);
Annotations.SetAction (method, MethodAction.Parse);
} else
AddUnresolveMarker (string.Format ("T: {0}; M: {1}", type, signature));
}
void ProcessMethodName (TypeDefinition type, string name)
{
if (!type.HasMethods)
return;
foreach (MethodDefinition method in type.Methods)
if (name == method.Name)
MarkMethod (type, method, name);
}
static MethodDefinition GetMethod (TypeDefinition type, string signature)
{
if (type.HasMethods)
foreach (MethodDefinition meth in type.Methods)
if (signature == GetMethodSignature (meth))
return meth;
return null;
}
static string GetMethodSignature (MethodDefinition meth)
{
StringBuilder sb = new StringBuilder ();
sb.Append (meth.ReturnType.FullName);
sb.Append (" ");
sb.Append (meth.Name);
sb.Append ("(");
if (meth.HasParameters) {
for (int i = 0; i < meth.Parameters.Count; i++) {
if (i > 0)
sb.Append (",");
sb.Append (meth.Parameters [i].ParameterType.FullName);
}
}
sb.Append (")");
return sb.ToString ();
}
static AssemblyDefinition GetAssembly (LinkContext context, string assemblyName)
{
AssemblyNameReference reference = AssemblyNameReference.Parse (assemblyName);
AssemblyDefinition assembly;
assembly = context.Resolve (reference);
ProcessReferences (assembly, context);
return assembly;
}
static void ProcessReferences (AssemblyDefinition assembly, LinkContext context)
{
context.ResolveReferences (assembly);
}
static bool IsRequired (XPathNavigator nav)
{
string attribute = GetAttribute (nav, _required);
if (attribute == null || attribute.Length == 0)
return true;
return TryParseBool (attribute);
}
static bool TryParseBool (string s)
{
try {
return bool.Parse (s);
} catch {
return false;
}
}
static string GetSignature (XPathNavigator nav)
{
return GetAttribute (nav, _signature);
}
static string GetFullName (XPathNavigator nav)
{
return GetAttribute (nav, _fullname);
}
static string GetAttribute (XPathNavigator nav, string attribute)
{
return nav.GetAttribute (attribute, _ns);
}
public override string ToString ()
{
return "ResolveFromXmlStep: " + _xmlDocumentLocation;
}
}
}
|