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
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
|
/* NSC -- new scala compiler
* Copyright 2004-2010 LAMP/EPFL
*/
package scala.tools.nsc
package symtab
package clr
import java.io.IOException
import ch.epfl.lamp.compiler.msil.{Type => MSILType, Attribute => MSILAttribute, _}
import scala.collection.mutable.{HashMap, HashSet}
import classfile.UnPickler
import ch.epfl.lamp.compiler.msil.Type.TMVarUsage
/**
* @author Nikolay Mihaylov
*/
abstract class TypeParser {
val global: Global
import global._
import loaders.clrTypes
//##########################################################################
private var clazz: Symbol = _
private var instanceDefs: Scope = _ // was members
private var staticModule: Symbol = _ // was staticsClass
private var staticDefs: Scope = _ // was statics
protected def statics: Symbol = staticModule.moduleClass
protected var busy: Boolean = false // lock to detect recursive reads
private object unpickler extends UnPickler {
val global: TypeParser.this.global.type = TypeParser.this.global
}
def parse(typ: MSILType, root: Symbol) {
def handleError(e: Throwable) = {
if (settings.debug.value) e.printStackTrace() //debug
throw new IOException("type '" + typ.FullName + "' is broken\n(" + e.getMessage() + ")")
}
assert(!busy)
busy = true
if (root.isModule) {
this.clazz = root.companionClass
this.staticModule = root
} else {
this.clazz = root
this.staticModule = root.companionModule
}
try {
parseClass(typ)
} catch {
case e: FatalError => handleError(e)
case e: RuntimeException => handleError(e)
}
busy = false
}
/* the names `classTParams' and `newTParams' stem from the forJVM version (ClassfileParser.sigToType())
* but there are differences that should be kept in mind.
* forMSIL, a nested class knows nothing about any type-params in the nesting class,
* therefore newTParams is redundant (other than for recording lexical order),
* it always contains the same elements as classTParams.value */
val classTParams = scala.collection.mutable.Map[Int,Symbol]() // TODO should this be a stack? (i.e., is it possible for >1 invocation to getCLRType on the same TypeParser instance be active )
val newTParams = new scala.collection.mutable.ListBuffer[Symbol]()
val methodTParams = scala.collection.mutable.Map[Int,Symbol]()
private def sig2typeBounds(tvarCILDef: GenericParamAndConstraints): Type = {
val ts = new scala.collection.mutable.ListBuffer[Type]
for (cnstrnt <- tvarCILDef.Constraints) {
ts += getCLRType(cnstrnt) // TODO we're definitely not at or after erasure, no need to call objToAny, right?
}
TypeBounds(definitions.NothingClass.tpe, intersectionType(ts.toList, clazz))
// TODO variance???
}
private def createViewFromTo(viewSuffix : String, fromTpe : Type, toTpe : Type,
addToboxMethodMap : Boolean, isAddressOf : Boolean) : Symbol = {
val flags = Flags.JAVA | Flags.STATIC | Flags.IMPLICIT; // todo: static? shouldn't be final instead?
val viewMethodType = (msym: Symbol) => JavaMethodType(msym.newSyntheticValueParams(List(fromTpe)), toTpe)
val vmsym = createMethod(nme.view_ + viewSuffix, flags, viewMethodType, null, true);
if (addToboxMethodMap) definitions.boxMethod(clazz) = vmsym
if (isAddressOf) clrTypes.addressOfViews += vmsym
vmsym
}
private def createDefaultConstructor(typ: MSILType) {
val attrs = MethodAttributes.Public | MethodAttributes.RTSpecialName | MethodAttributes.SpecialName // TODO instance
val declType= typ
val method = new ConstructorInfo(declType, attrs, Array[MSILType]())
val flags = Flags.JAVA
val owner = clazz
val methodSym = owner.newMethod(NoPosition, nme.CONSTRUCTOR).setFlag(flags)
val rettype = clazz.tpe
val mtype = methodType(Array[MSILType](), rettype);
val mInfo = mtype(methodSym)
methodSym.setInfo(mInfo)
instanceDefs.enter(methodSym);
clrTypes.constructors(methodSym) = method
}
private def parseClass(typ: MSILType) {
{
val t4c = clrTypes.types.get(clazz)
assert(t4c == None || t4c == Some(typ))
}
clrTypes.types(clazz) = typ
{
val c4t = clrTypes.sym2type.get(typ)
assert(c4t == None || c4t == Some(clazz))
}
clrTypes.sym2type(typ) = clazz
if (typ.IsDefined(clrTypes.SCALA_SYMTAB_ATTR, false)) {
val attrs = typ.GetCustomAttributes(clrTypes.SCALA_SYMTAB_ATTR, false);
assert (attrs.length == 1, attrs.length);
val a = attrs(0).asInstanceOf[MSILAttribute];
assert (a.getConstructor() == clrTypes.SYMTAB_CONSTR);
val symtab = a.getConstructorArguments()(0).asInstanceOf[Array[Byte]]
unpickler.unpickle(symtab, 0, clazz, staticModule, typ.FullName);
val mClass = clrTypes.getType(typ.FullName + "$");
if (mClass != null) {
clrTypes.types(statics) = mClass;
val moduleInstance = mClass.GetField("MODULE$");
assert (moduleInstance != null, mClass);
clrTypes.fields(statics) = moduleInstance;
}
return
}
val flags = translateAttributes(typ)
var clazzBoxed : Symbol = NoSymbol
var clazzMgdPtr : Symbol = NoSymbol
val canBeTakenAddressOf = (typ.IsValueType || typ.IsEnum) && (typ.FullName != "System.Enum")
if(canBeTakenAddressOf) {
clazzBoxed = clazz.owner.newClass(clazz.name + "Boxed")
clazzMgdPtr = clazz.owner.newClass(clazz.name + "MgdPtr")
clrTypes.mdgptrcls4clssym(clazz) = clazzMgdPtr
/* adding typMgdPtr to clrTypes.sym2type should happen early (before metadata for supertypes is parsed,
before metadata for members are parsed) so that clazzMgdPtr can be found by getClRType. */
val typMgdPtr = MSILType.mkByRef(typ)
clrTypes.types(clazzMgdPtr) = typMgdPtr
clrTypes.sym2type(typMgdPtr) = clazzMgdPtr
/* clazzMgdPtr but not clazzBoxed is mapped by clrTypes.types into an msil.Type instance,
because there's no metadata-level representation for a "boxed valuetype" */
val instanceDefsMgdPtr = new Scope
val classInfoMgdPtr = ClassInfoType(definitions.anyvalparam, instanceDefsMgdPtr, clazzMgdPtr)
clazzMgdPtr.setFlag(flags)
clazzMgdPtr.setInfo(classInfoMgdPtr)
}
/* TODO CLR generics
// first pass
for (tvarCILDef <- typ.getSortedTVars() ) {
val tpname = newTypeName(tvarCILDef.Name.replaceAll("!", "")) // TODO are really all type-params named in all assemblies out there? (NO)
val tpsym = clazz.newTypeParameter(NoPosition, tpname)
classTParams.put(tvarCILDef.Number, tpsym)
newTParams += tpsym
// TODO wouldn't the following also be needed later, i.e. during getCLRType
tpsym.setInfo(definitions.AnyClass.tpe)
}
// second pass
for (tvarCILDef <- typ.getSortedTVars() ) {
val tpsym = classTParams(tvarCILDef.Number)
tpsym.setInfo(sig2typeBounds(tvarCILDef)) // we never skip bounds unlike in forJVM
}
*/
val ownTypeParams = newTParams.toList
/* TODO CLR generics
if (!ownTypeParams.isEmpty) {
clazz.setInfo(new TypeParamsType(ownTypeParams))
if(typ.IsValueType && !typ.IsEnum) {
clazzBoxed.setInfo(new TypeParamsType(ownTypeParams))
}
}
*/
instanceDefs = new Scope
staticDefs = new Scope
val classInfoAsInMetadata = {
val ifaces: Array[MSILType] = typ.getInterfaces()
val superType = if (typ.BaseType() != null) getCLRType(typ.BaseType())
else if (typ.IsInterface()) definitions.ObjectClass.tpe
else definitions.AnyClass.tpe; // this branch activates for System.Object only.
// parents (i.e., base type and interfaces)
val parents = new scala.collection.mutable.ListBuffer[Type]()
parents += superType
for (iface <- ifaces) {
parents += getCLRType(iface) // here the variance doesn't matter
}
// methods, properties, events, fields are entered in a moment
if (canBeTakenAddressOf) {
val instanceDefsBoxed = new Scope
ClassInfoType(parents.toList, instanceDefsBoxed, clazzBoxed)
} else
ClassInfoType(parents.toList, instanceDefs, clazz)
}
val staticInfo = ClassInfoType(List(), staticDefs, statics)
clazz.setFlag(flags)
if (canBeTakenAddressOf) {
clazzBoxed.setInfo( if (ownTypeParams.isEmpty) classInfoAsInMetadata
else polyType(ownTypeParams, classInfoAsInMetadata) )
clazzBoxed.setFlag(flags)
val rawValueInfoType = ClassInfoType(definitions.anyvalparam, instanceDefs, clazz)
clazz.setInfo( if (ownTypeParams.isEmpty) rawValueInfoType
else polyType(ownTypeParams, rawValueInfoType) )
} else {
clazz.setInfo( if (ownTypeParams.isEmpty) classInfoAsInMetadata
else polyType(ownTypeParams, classInfoAsInMetadata) )
}
// TODO I don't remember if statics.setInfo and staticModule.setInfo should also know about type params
statics.setFlag(Flags.JAVA)
statics.setInfo(staticInfo)
staticModule.setFlag(Flags.JAVA)
staticModule.setInfo(statics.tpe)
if (canBeTakenAddressOf) {
// implicit conversions are owned by staticModule.moduleClass
createViewFromTo("2Boxed", clazz.tpe, clazzBoxed.tpe, addToboxMethodMap = true, isAddressOf = false)
// createViewFromTo("2Object", clazz.tpe, definitions.ObjectClass.tpe, addToboxMethodMap = true, isAddressOf = false)
createViewFromTo("2MgdPtr", clazz.tpe, clazzMgdPtr.tpe, addToboxMethodMap = false, isAddressOf = true)
// a return can't have type managed-pointer, thus a dereference-conversion is not needed
// similarly, a method can't declare as return type "boxed valuetype"
if (!typ.IsEnum) {
// a synthetic default constructor for raw-type allows `new X' syntax
createDefaultConstructor(typ)
}
}
// import nested types
for (ntype <- typ.getNestedTypes() if !(ntype.IsNestedPrivate || ntype.IsNestedAssembly || ntype.IsNestedFamANDAssem)
|| ntype.IsInterface /* TODO why shouldn't nested ifaces be type-parsed too? */ )
{
val loader = new loaders.MSILTypeLoader(ntype)
val nclazz = statics.newClass(NoPosition, ntype.Name.toTypeName)
val nmodule = statics.newModule(NoPosition, ntype.Name)
nclazz.setInfo(loader)
nmodule.setInfo(loader)
staticDefs.enter(nclazz)
staticDefs.enter(nmodule)
assert(nclazz.companionModule == nmodule, nmodule)
assert(nmodule.companionClass == nclazz, nclazz)
}
val fields = typ.getFields()
for (field <- fields
if !(field.IsPrivate() || field.IsAssembly() || field.IsFamilyAndAssembly)
if (getCLRType(field.FieldType) != null)
) {
assert (!field.FieldType.IsPointer && !field.FieldType.IsByRef, "CLR requirement")
val flags = translateAttributes(field);
val name = newTermName(field.Name);
val fieldType =
if (field.IsLiteral && !field.FieldType.IsEnum && isDefinedAtgetConstant(getCLRType(field.FieldType)))
ConstantType(getConstant(getCLRType(field.FieldType), field.getValue))
else
getCLRType(field.FieldType)
val owner = if (field.IsStatic()) statics else clazz;
val sym = owner.newValue(NoPosition, name).setFlag(flags).setInfo(fieldType);
// TODO: set private within!!! -> look at typechecker/Namers.scala
(if (field.IsStatic()) staticDefs else instanceDefs).enter(sym);
clrTypes.fields(sym) = field;
}
for (constr <- typ.getConstructors() if !constr.IsStatic() && !constr.IsPrivate() &&
!constr.IsAssembly() && !constr.IsFamilyAndAssembly() && !constr.HasPtrParamOrRetType())
createMethod(constr);
// initially also contains getters and setters of properties.
val methodsSet = new HashSet[MethodInfo]();
methodsSet ++= typ.getMethods();
for (prop <- typ.getProperties) {
val propType: Type = getCLSType(prop.PropertyType);
if (propType != null) {
val getter: MethodInfo = prop.GetGetMethod(true);
val setter: MethodInfo = prop.GetSetMethod(true);
var gparamsLength: Int = -1;
if (!(getter == null || getter.IsPrivate || getter.IsAssembly
|| getter.IsFamilyAndAssembly || getter.HasPtrParamOrRetType))
{
assert(prop.PropertyType == getter.ReturnType);
val gparams: Array[ParameterInfo] = getter.GetParameters();
gparamsLength = gparams.length;
val name: Name = if (gparamsLength == 0) prop.Name else nme.apply;
val flags = translateAttributes(getter);
val owner: Symbol = if (getter.IsStatic) statics else clazz;
val methodSym = owner.newMethod(NoPosition, name).setFlag(flags)
val mtype: Type = if (gparamsLength == 0) PolyType(List(), propType) // .NET properties can't be polymorphic
else methodType(getter, getter.ReturnType)(methodSym)
methodSym.setInfo(mtype);
methodSym.setFlag(Flags.ACCESSOR);
(if (getter.IsStatic) staticDefs else instanceDefs).enter(methodSym)
clrTypes.methods(methodSym) = getter;
methodsSet -= getter;
}
if (!(setter == null || setter.IsPrivate || setter.IsAssembly
|| setter.IsFamilyAndAssembly || setter.HasPtrParamOrRetType))
{
val sparams: Array[ParameterInfo] = setter.GetParameters()
if(getter != null)
assert(getter.IsStatic == setter.IsStatic);
assert(setter.ReturnType == clrTypes.VOID);
if(getter != null)
assert(sparams.length == gparamsLength + 1, "" + getter + "; " + setter);
val name: Name = if (gparamsLength == 0) nme.getterToSetter(prop.Name)
else nme.update;
val flags = translateAttributes(setter);
val mtype = methodType(setter, definitions.UnitClass.tpe);
val owner: Symbol = if (setter.IsStatic) statics else clazz;
val methodSym = owner.newMethod(NoPosition, name).setFlag(flags)
methodSym.setInfo(mtype(methodSym))
methodSym.setFlag(Flags.ACCESSOR);
(if (setter.IsStatic) staticDefs else instanceDefs).enter(methodSym);
clrTypes.methods(methodSym) = setter;
methodsSet -= setter;
}
}
}
/* for (event <- typ.GetEvents) {
// adding += and -= methods to add delegates to an event.
// raising the event ist not possible from outside the class (this is so
// generally in .net world)
val adder: MethodInfo = event.GetAddMethod();
val remover: MethodInfo = event.GetRemoveMethod();
if (!(adder == null || adder.IsPrivate || adder.IsAssembly
|| adder.IsFamilyAndAssembly))
{
assert(adder.ReturnType == clrTypes.VOID);
assert(adder.GetParameters().map(_.ParameterType).toList == List(event.EventHandlerType));
val name = encode("+=");
val flags = translateAttributes(adder);
val mtype: Type = methodType(adder, adder.ReturnType);
createMethod(name, flags, mtype, adder, adder.IsStatic)
methodsSet -= adder;
}
if (!(remover == null || remover.IsPrivate || remover.IsAssembly
|| remover.IsFamilyAndAssembly))
{
assert(remover.ReturnType == clrTypes.VOID);
assert(remover.GetParameters().map(_.ParameterType).toList == List(event.EventHandlerType));
val name = encode("-=");
val flags = translateAttributes(remover);
val mtype: Type = methodType(remover, remover.ReturnType);
createMethod(name, flags, mtype, remover, remover.IsStatic)
methodsSet -= remover;
}
} */
/* Adds view amounting to syntax sugar for a CLR implicit overload.
The long-form syntax can also be supported if "methodsSet -= method" (last statement) is removed.
/* remember, there's typ.getMethods and type.GetMethods */
for (method <- typ.getMethods)
if(!method.HasPtrParamOrRetType &&
method.IsPublic && method.IsStatic && method.IsSpecialName &&
method.Name == "op_Implicit") {
// create a view: typ => method's return type
val viewRetType: Type = getCLRType(method.ReturnType)
val viewParamTypes: List[Type] = method.GetParameters().map(_.ParameterType).map(getCLSType).toList;
/* The spec says "The operator method shall be defined as a static method on either the operand or return type."
* We don't consider the declaring type for the purposes of definitions.functionType,
* instead we regard op_Implicit's argument type and return type as defining the view's signature.
*/
if (viewRetType != null && !viewParamTypes.contains(null)) {
/* The check above applies e.g. to System.Decimal that has a conversion from UInt16, a non-CLS type, whose CLS-mapping returns null */
val funType: Type = definitions.functionType(viewParamTypes, viewRetType);
val flags = Flags.JAVA | Flags.STATIC | Flags.IMPLICIT; // todo: static? shouldn't be final instead?
val viewMethodType = (msym: Symbol) => JavaMethodType(msym.newSyntheticValueParams(viewParamTypes), funType)
val vmsym = createMethod(nme.view_, flags, viewMethodType, method, true);
methodsSet -= method;
}
}
*/
for (method <- methodsSet.iterator)
if (!method.IsPrivate() && !method.IsAssembly() && !method.IsFamilyAndAssembly()
&& !method.HasPtrParamOrRetType)
createMethod(method);
// Create methods and views for delegate support
if (clrTypes.isDelegateType(typ)) {
createDelegateView(typ)
createDelegateChainers(typ)
}
// for enumerations introduce comparison and bitwise logical operations;
// the backend will recognize them and replace them with comparison or
// bitwise logical operations on the primitive underlying type
if (typ.IsEnum) {
val ENUM_CMP_NAMES = List(nme.EQ, nme.NE, nme.LT, nme.LE, nme.GT, nme.GE);
val ENUM_BIT_LOG_NAMES = List(nme.OR, nme.AND, nme.XOR);
val flags = Flags.JAVA | Flags.FINAL
for (cmpName <- ENUM_CMP_NAMES) {
val enumCmp = clazz.newMethod(NoPosition, cmpName)
val enumCmpType = JavaMethodType(enumCmp.newSyntheticValueParams(List(clazz.tpe)), definitions.BooleanClass.tpe)
enumCmp.setFlag(flags).setInfo(enumCmpType)
instanceDefs.enter(enumCmp)
}
for (bitLogName <- ENUM_BIT_LOG_NAMES) {
val enumBitLog = clazz.newMethod(NoPosition, bitLogName)
val enumBitLogType = JavaMethodType(enumBitLog.newSyntheticValueParams(List(clazz.tpe)), clazz.tpe /* was classInfo, infinite typer */)
enumBitLog.setFlag(flags).setInfo(enumBitLogType)
instanceDefs.enter(enumBitLog)
}
}
} // parseClass
private def populateMethodTParams(method: MethodBase, methodSym: MethodSymbol) : List[Symbol] = {
if(!method.IsGeneric) Nil
else {
methodTParams.clear
val newMethodTParams = new scala.collection.mutable.ListBuffer[Symbol]()
// first pass
for (mvarCILDef <- method.getSortedMVars() ) {
val mtpname = newTypeName(mvarCILDef.Name.replaceAll("!", "")) // TODO are really all method-level-type-params named in all assemblies out there? (NO)
val mtpsym = methodSym.newTypeParameter(NoPosition, mtpname)
methodTParams.put(mvarCILDef.Number, mtpsym)
newMethodTParams += mtpsym
// TODO wouldn't the following also be needed later, i.e. during getCLRType
mtpsym.setInfo(definitions.AnyClass.tpe)
}
// second pass
for (mvarCILDef <- method.getSortedMVars() ) {
val mtpsym = methodTParams(mvarCILDef.Number)
mtpsym.setInfo(sig2typeBounds(mvarCILDef)) // we never skip bounds unlike in forJVM
}
newMethodTParams.toList
}
}
private def createMethod(method: MethodBase) {
val flags = translateAttributes(method);
val owner = if (method.IsStatic()) statics else clazz;
val methodSym = owner.newMethod(NoPosition, getName(method)).setFlag(flags)
// TODO CLR generics val newMethodTParams = populateMethodTParams(method, methodSym)
val rettype = if (method.IsConstructor()) clazz.tpe
else getCLSType(method.asInstanceOf[MethodInfo].ReturnType);
if (rettype == null) return;
val mtype = methodType(method, rettype);
if (mtype == null) return;
/* TODO CLR generics
val mInfo = if (method.IsGeneric) polyType(newMethodTParams, mtype(methodSym))
else mtype(methodSym)
*/
val mInfo = mtype(methodSym)
methodSym.setInfo(mInfo)
(if (method.IsStatic()) staticDefs else instanceDefs).enter(methodSym);
if (method.IsConstructor())
clrTypes.constructors(methodSym) = method.asInstanceOf[ConstructorInfo]
else clrTypes.methods(methodSym) = method.asInstanceOf[MethodInfo];
}
private def createMethod(name: Name, flags: Long, args: Array[MSILType], retType: MSILType, method: MethodInfo, statik: Boolean): Symbol = {
val mtype = methodType(args, getCLSType(retType))
assert(mtype != null)
createMethod(name, flags, mtype, method, statik)
}
private def createMethod(name: Name, flags: Long, mtype: Symbol => Type, method: MethodInfo, statik: Boolean): Symbol = {
val methodSym: Symbol = (if (statik) statics else clazz).newMethod(NoPosition, name)
methodSym.setFlag(flags).setInfo(mtype(methodSym))
(if (statik) staticDefs else instanceDefs).enter(methodSym)
if (method != null)
clrTypes.methods(methodSym) = method
methodSym
}
private def createDelegateView(typ: MSILType) = {
val invoke: MethodInfo = typ.GetMember("Invoke")(0).asInstanceOf[MethodInfo];
val invokeRetType: Type = getCLRType(invoke.ReturnType);
val invokeParamTypes: List[Type] =invoke.GetParameters().map(_.ParameterType).map(getCLSType).toList;
val funType: Type = definitions.functionType(invokeParamTypes, invokeRetType);
val typClrType: Type = getCLRType(typ);
val flags = Flags.JAVA | Flags.STATIC | Flags.IMPLICIT; // todo: static? think not needed
// create the forward view: delegate => function
val delegateParamTypes: List[Type] = List(typClrType);
// not ImplicitMethodType, this is for methods with implicit parameters (not implicit methods)
val forwardViewMethodType = (msym: Symbol) => JavaMethodType(msym.newSyntheticValueParams(delegateParamTypes), funType)
val fmsym = createMethod(nme.view_, flags, forwardViewMethodType, null, true);
// create the backward view: function => delegate
val functionParamTypes: List[Type] = List(funType);
val backwardViewMethodType = (msym: Symbol) => JavaMethodType(msym.newSyntheticValueParams(functionParamTypes), typClrType)
val bmsym = createMethod(nme.view_, flags, backwardViewMethodType, null, true);
}
private def createDelegateChainers(typ: MSILType) = {
val flags: Long = Flags.JAVA | Flags.FINAL
val args: Array[MSILType] = Array(typ)
var s = createMethod(encode("+="), flags, args, clrTypes.VOID, clrTypes.DELEGATE_COMBINE, false);
s = createMethod(encode("-="), flags, args, clrTypes.VOID, clrTypes.DELEGATE_REMOVE, false);
s = createMethod(nme.PLUS, flags, args, typ, clrTypes.DELEGATE_COMBINE, false);
s = createMethod(nme.MINUS, flags, args, typ, clrTypes.DELEGATE_REMOVE, false);
}
private def getName(method: MethodBase): Name = {
def operatorOverload(name : String, paramsArity : Int) : Option[Name] = paramsArity match {
case 1 => name match {
// PartitionI.10.3.1
case "op_Decrement" => Some(encode("--"))
case "op_Increment" => Some(encode("++"))
case "op_UnaryNegation" => Some(nme.UNARY_-)
case "op_UnaryPlus" => Some(nme.UNARY_+)
case "op_LogicalNot" => Some(nme.UNARY_!)
case "op_OnesComplement" => Some(nme.UNARY_~)
/* op_True and op_False have no operator symbol assigned,
Other methods that will have to be written in full are:
op_AddressOf & (unary)
op_PointerDereference * (unary) */
case _ => None
}
case 2 => name match {
// PartitionI.10.3.2
case "op_Addition" => Some(nme.ADD)
case "op_Subtraction" => Some(nme.SUB)
case "op_Multiply" => Some(nme.MUL)
case "op_Division" => Some(nme.DIV)
case "op_Modulus" => Some(nme.MOD)
case "op_ExclusiveOr" => Some(nme.XOR)
case "op_BitwiseAnd" => Some(nme.AND)
case "op_BitwiseOr" => Some(nme.OR)
case "op_LogicalAnd" => Some(nme.ZAND)
case "op_LogicalOr" => Some(nme.ZOR)
case "op_LeftShift" => Some(nme.LSL)
case "op_RightShift" => Some(nme.ASR)
case "op_Equality" => Some(nme.EQ)
case "op_GreaterThan" => Some(nme.GT)
case "op_LessThan" => Some(nme.LT)
case "op_Inequality" => Some(nme.NE)
case "op_GreaterThanOrEqual" => Some(nme.GE)
case "op_LessThanOrEqual" => Some(nme.LE)
/* op_MemberSelection is reserved in Scala */
/* The standard does not assign operator symbols to op_Assign , op_SignedRightShift , op_UnsignedRightShift ,
* and op_UnsignedRightShiftAssignment so those names will be used instead to invoke those methods. */
/*
The remaining binary operators are not overloaded in C# and are therefore not in widespread use. They have to be written in full.
op_RightShiftAssignment >>=
op_MultiplicationAssignment *=
op_PointerToMemberSelection ->*
op_SubtractionAssignment -=
op_ExclusiveOrAssignment ^=
op_LeftShiftAssignment <<=
op_ModulusAssignment %=
op_AdditionAssignment +=
op_BitwiseAndAssignment &=
op_BitwiseOrAssignment |=
op_Comma ,
op_DivisionAssignment /=
*/
case _ => None
}
case _ => None
}
if (method.IsConstructor()) return nme.CONSTRUCTOR;
val name = method.Name;
if (method.IsStatic()) {
if(method.IsSpecialName) {
val paramsArity = method.GetParameters().size
// handle operator overload, otherwise handle as any static method
val operName = operatorOverload(name, paramsArity)
if (operName.isDefined) { return operName.get; }
}
return newTermName(name);
}
val params = method.GetParameters();
name match {
case "GetHashCode" if (params.length == 0) => nme.hashCode_;
case "ToString" if (params.length == 0) => nme.toString_;
case "Finalize" if (params.length == 0) => nme.finalize_;
case "Equals" if (params.length == 1 && params(0).ParameterType == clrTypes.OBJECT) =>
nme.equals_;
case "Invoke" if (clrTypes.isDelegateType(method.DeclaringType)) => nme.apply;
case _ => newTermName(name);
}
}
//##########################################################################
private def methodType(method: MethodBase, rettype: MSILType): Symbol => Type = {
val rtype = getCLSType(rettype);
if (rtype == null) null else methodType(method, rtype);
}
/** Return a method type for the given method. */
private def methodType(method: MethodBase, rettype: Type): Symbol => Type =
methodType(method.GetParameters().map(_.ParameterType), rettype);
/** Return a method type for the provided argument types and return type. */
private def methodType(argtypes: Array[MSILType], rettype: Type): Symbol => Type = {
def paramType(typ: MSILType): Type =
if (typ eq clrTypes.OBJECT) definitions.AnyClass.tpe // TODO a hack to compile scalalib, should be definitions.AnyRefClass.tpe
else getCLSType(typ);
val ptypes = argtypes.map(paramType).toList;
if (ptypes.contains(null)) null
else method => JavaMethodType(method.newSyntheticValueParams(ptypes), rettype);
}
//##########################################################################
private def getClassType(typ: MSILType): Type = {
assert(typ != null);
val res = definitions.getClass(typ.FullName.replace('+', '.')).tpe;
//if (res.isError())
// global.reporter.error("unknown class reference " + type.FullName);
res
}
private def getCLSType(typ: MSILType): Type = { // getCLS returns non-null for types GenMSIL can handle, be they CLS-compliant or not
if (typ.IsTMVarUsage())
null // TODO after generics: getCLRType(typ)
else if ( /* TODO hack if UBYE, uncommented, "ambiguous reference to overloaded definition" ensues, for example for System.Math.Max(x, y) */
typ == clrTypes.USHORT || typ == clrTypes.UINT || typ == clrTypes.ULONG
/* || typ == clrTypes.UBYTE */
|| typ.IsNotPublic() || typ.IsNestedPrivate()
|| typ.IsNestedAssembly() || typ.IsNestedFamANDAssem()
|| typ.IsPointer()
|| (typ.IsArray() && getCLRType(typ.GetElementType()) == null) /* TODO hack: getCLR instead of getCLS */
|| (typ.IsByRef() && !typ.GetElementType().CanBeTakenAddressOf()))
null
else
getCLRType(typ)
}
private def getCLRTypeIfPrimitiveNullOtherwise(typ: MSILType): Type =
if (typ == clrTypes.OBJECT)
definitions.ObjectClass.tpe;
else if (typ == clrTypes.VALUE_TYPE)
definitions.AnyValClass.tpe
else if (typ == clrTypes.STRING)
definitions.StringClass.tpe;
else if (typ == clrTypes.VOID)
definitions.UnitClass.tpe
else if (typ == clrTypes.BOOLEAN)
definitions.BooleanClass.tpe
else if (typ == clrTypes.CHAR)
definitions.CharClass.tpe
else if ((typ == clrTypes.BYTE) || (typ == clrTypes.UBYTE)) // TODO U... is a hack to compile scalalib
definitions.ByteClass.tpe
else if ((typ == clrTypes.SHORT) || (typ == clrTypes.SHORT)) // TODO U... is a hack to compile scalalib
definitions.ShortClass.tpe
else if ((typ == clrTypes.INT) || (typ == clrTypes.UINT)) // TODO U... is a hack to compile scalalib
definitions.IntClass.tpe
else if ((typ == clrTypes.LONG) || (typ == clrTypes.LONG)) // TODO U... is a hack to compile scalalib
definitions.LongClass.tpe
else if (typ == clrTypes.FLOAT)
definitions.FloatClass.tpe
else if (typ == clrTypes.DOUBLE)
definitions.DoubleClass.tpe
else null
private def getCLRType(tMSIL: MSILType): Type = {
var res = getCLRTypeIfPrimitiveNullOtherwise(tMSIL)
if (res != null) res
else if (tMSIL.isInstanceOf[ConstructedType]) {
val ct = tMSIL.asInstanceOf[ConstructedType]
/* TODO CLR generics: uncomment next two lines and comment out the hack after them
val cttpArgs = ct.typeArgs.map(tmsil => getCLRType(tmsil)).toList
appliedType(getCLRType(ct.instantiatedType), cttpArgs)
*/
getCLRType(ct.instantiatedType)
} else if (tMSIL.isInstanceOf[TMVarUsage]) {
/* TODO CLR generics: uncomment next lines and comment out the hack after them
val tVarUsage = tMSIL.asInstanceOf[TMVarUsage]
val tVarNumber = tVarUsage.Number
if (tVarUsage.isTVar) classTParams(tVarNumber).typeConstructor // shouldn't fail, just return definitions.AnyClass.tpe at worst
else methodTParams(tVarNumber).typeConstructor // shouldn't fail, just return definitions.AnyClass.tpe at worst
*/
null // definitions.ObjectClass.tpe
} else if (tMSIL.IsArray()) {
var elemtp = getCLRType(tMSIL.GetElementType())
// cut&pasted from ClassfileParser
// make unbounded Array[T] where T is a type variable into Array[T with Object]
// (this is necessary because such arrays have a representation which is incompatible
// with arrays of primitive types).
// TODO does that incompatibility also apply to .NET?
if (elemtp.typeSymbol.isAbstractType && !(elemtp <:< definitions.ObjectClass.tpe))
elemtp = intersectionType(List(elemtp, definitions.ObjectClass.tpe))
appliedType(definitions.ArrayClass.tpe, List(elemtp))
} else {
res = clrTypes.sym2type.get(tMSIL) match {
case Some(sym) => sym.tpe
case None => if (tMSIL.IsByRef && tMSIL.GetElementType.IsValueType) {
val addressed = getCLRType(tMSIL.GetElementType)
val clasym = addressed.typeSymbolDirect // TODO should be .typeSymbol?
clasym.info.load(clasym)
val secondAttempt = clrTypes.sym2type.get(tMSIL)
secondAttempt match { case Some(sym) => sym.tpe
case None => null
}
} else getClassType(tMSIL)
}
if (res == null)
null // TODO new RuntimeException()
else res
}
}
// the values are Java-Box-Classes (e.g. Integer, Boolean, Character)
// java.lang.Number to get the value (if a number, not for boolean, character)
// see ch.epfl.lamp.compiler.msil.util.PEStream.java
def getConstant(constType: Type, value: Object): Constant = {
val typeClass = constType.typeSymbol
if (typeClass == definitions.BooleanClass)
Constant(value.asInstanceOf[java.lang.Boolean].booleanValue)
else if (typeClass == definitions.ByteClass)
Constant(value.asInstanceOf[java.lang.Number].byteValue)
else if (typeClass == definitions.ShortClass)
Constant(value.asInstanceOf[java.lang.Number].shortValue)
else if (typeClass == definitions.CharClass)
Constant(value.asInstanceOf[java.lang.Character].charValue)
else if (typeClass == definitions.IntClass)
Constant(value.asInstanceOf[java.lang.Number].intValue)
else if (typeClass == definitions.LongClass)
Constant(value.asInstanceOf[java.lang.Number].longValue)
else if (typeClass == definitions.FloatClass)
Constant(value.asInstanceOf[java.lang.Number].floatValue)
else if (typeClass == definitions.DoubleClass)
Constant(value.asInstanceOf[java.lang.Number].doubleValue)
else if (typeClass == definitions.StringClass)
Constant(value.asInstanceOf[java.lang.String])
else
abort("illegal value: " + value + ", class-symbol: " + typeClass)
}
def isDefinedAtgetConstant(constType: Type): Boolean = {
val typeClass = constType.typeSymbol
if ( (typeClass == definitions.BooleanClass)
|| (typeClass == definitions.ByteClass)
|| (typeClass == definitions.ShortClass)
|| (typeClass == definitions.CharClass)
|| (typeClass == definitions.IntClass)
|| (typeClass == definitions.LongClass)
|| (typeClass == definitions.FloatClass)
|| (typeClass == definitions.DoubleClass)
|| (typeClass == definitions.StringClass)
)
true
else
false
}
private def translateAttributes(typ: MSILType): Long = {
var flags: Long = Flags.JAVA;
if (typ.IsNotPublic() || typ.IsNestedPrivate()
|| typ.IsNestedAssembly() || typ.IsNestedFamANDAssem())
flags = flags | Flags.PRIVATE;
else if (typ.IsNestedFamily() || typ.IsNestedFamORAssem())
flags = flags | Flags.PROTECTED;
if (typ.IsAbstract())
flags = flags | Flags.ABSTRACT;
if (typ.IsSealed())
flags = flags | Flags.FINAL;
if (typ.IsInterface())
flags = flags | Flags.INTERFACE | Flags.TRAIT | Flags.ABSTRACT;
flags
}
private def translateAttributes(field: FieldInfo): Long = {
var flags: Long = Flags.JAVA;
if (field.IsPrivate() || field.IsAssembly() || field.IsFamilyAndAssembly())
flags = flags | Flags.PRIVATE;
else if (field.IsFamily() || field.IsFamilyOrAssembly())
flags = flags | Flags.PROTECTED;
if (field.IsInitOnly())
flags = flags | Flags.FINAL;
else
flags = flags | Flags.MUTABLE;
if (field.IsStatic)
flags = flags | Flags.STATIC
flags
}
private def translateAttributes(method: MethodBase): Long = {
var flags: Long = Flags.JAVA;
if (method.IsPrivate() || method.IsAssembly() || method.IsFamilyAndAssembly())
flags = flags | Flags.PRIVATE;
else if (method.IsFamily() || method.IsFamilyOrAssembly())
flags = flags | Flags.PROTECTED;
if (method.IsAbstract())
flags = flags | Flags.DEFERRED;
if (method.IsStatic)
flags = flags | Flags.STATIC
flags
}
}
|