/[eiffelstudio]/branches/CAT_mono/Src/Eiffel/eiffel/genericity/cl_type_i.e
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Revision 44032 - (hide annotations)
Wed Jun 30 04:19:23 2004 UTC (15 years, 8 months ago) by manus
Original Path: trunk/Src/bench/Eiffel/eiffel/genericity/cl_type_i.e
File size: 13626 byte(s)
Made sure to generate `Element_type_object' for something declared of type
  ANY. This is because now our ANY and System.Object maps to System.Object
  in the generated code.
Fixed `is_generated_as_single_type' to ensure that it reports proper information
  for already generated types such as .NET external types, and for Eiffel types.
  Note that we commented some code while waiting for a good code generation
  of expanded in .NET.

1 manus 26913 indexing
2     description: "Type class."
3     date: "$Date$"
4     revision: "$Revision$"
5 grator 18
6     class CL_TYPE_I
7    
8     inherit
9     TYPE_I
10     redefine
11     is_reference,
12 manus 41824 is_expanded,
13 xavierl 4623 is_separate,
14 grator 236 is_valid,
15 manus 11218 is_explicit,
16 manus 28380 is_external,
17 grator 18 same_as,
18     c_type,
19 manus 10818 conforms_to_array,
20     generated_id,
21 manus 11298 generate_cid,
22 manus 14013 make_gen_type_byte_code,
23     generate_cid_array,
24 manus 30169 generate_cid_init,
25 manus 35665 generate_gen_type_il,
26 manus 41824 generate_expanded_creation,
27 manus 43364 generate_expanded_initialization,
28 manus 41824 instantiation_in,
29     generic_derivation,
30     is_generated_as_single_type
31 grator 18 end
32    
33 manus 33952 SHARED_IL_CASING
34     export
35     {NONE} all
36     end
37    
38 manus 35665 SHARED_GENERATION
39     export
40     {NONE} all
41     end
42    
43     SHARED_DECLARATIONS
44     export
45     {NONE} all
46     end
47    
48 manus 30224 create
49     make
50    
51     feature {NONE} -- Initialization
52    
53     make (id: INTEGER) is
54 manus 30293 -- Create new instance of `Current' with `class_id'
55 manus 30224 -- assigned with `id'.
56     require
57     valid_id: id > 0
58     do
59 manus 30293 class_id := id
60 manus 41824 if is_basic then
61     -- We know for sure that it is expanded then.
62     is_expanded := True
63     end
64 manus 30224 ensure
65 manus 30293 class_id_set: class_id = id
66 manus 30224 end
67    
68 manus 26913 feature -- Access
69 grator 18
70 manus 30293 class_id: INTEGER
71 grator 18 -- Base class id of the type class
72    
73     meta_generic: META_GENERIC is
74     -- Meta generic array describing the type class
75     do
76     -- No meta generic in non-generic type
77 manus 9655 end
78 grator 18
79 manus 10890 cr_info : CREATE_INFO
80     -- Additional information for the creation
81     -- of generic types with anchored parameters
82    
83 manus 10818 true_generics : ARRAY [TYPE_I] is
84     -- Array of generics: no mapping reference -> REFERENCE_I
85     do
86     -- Non generic types don't have them
87     end
88    
89 grator 18 base_class: CLASS_C is
90     -- Base class associated to the class type
91     do
92 manus 30293 Result := System.class_of_id (class_id)
93 manus 9655 end
94 grator 18
95 manus 41824 generic_derivation: CL_TYPE_I is
96     -- Precise generic derivation of current type.
97     -- That is to say given a type, it gives the associated TYPE_I
98     -- which can be used to search its associated CLASS_TYPE.
99     do
100     Result := Current
101     end
102    
103 manus 26913 type_a: CL_TYPE_A is
104 grator 236 do
105 manus 30293 create Result.make (class_id)
106 manus 41824 Result.set_is_expanded (is_expanded)
107 manus 26913 Result.set_is_separate (is_separate)
108 manus 9655 end
109 grator 236
110 manus 41824 name: STRING is
111     -- String that should be displayed in debugger to represent `Current'.
112     do
113 manus 43828 Result := base_name
114 manus 41824 end
115 manus 43828
116     instantiation_in (other: CLASS_TYPE): CL_TYPE_I is
117 manus 41824 -- Instantation of Current in `other'
118     do
119     Result := Current
120     end
121    
122 manus 33952 il_type_name (a_prefix: STRING): STRING is
123 manus 26913 -- Class name of current type.
124 manus 29681 local
125     l_class_c: like base_class
126 manus 34253 l_is_precompiled: BOOLEAN
127     l_cl_type: like associated_class_type
128 grator 18 do
129 manus 29681 l_class_c := base_class
130 manus 41824 if is_external then
131 manus 40771 Result := l_class_c.external_class_name.twin
132 manus 29681 else
133 manus 34253 l_is_precompiled := l_class_c.is_precompiled
134     if l_is_precompiled then
135     l_cl_type := associated_class_type
136     l_is_precompiled := l_cl_type.is_precompiled
137     if l_is_precompiled then
138     Result := associated_class_type.il_type_name (a_prefix)
139     end
140     end
141     if not l_is_precompiled then
142 manus 40771 Result := internal_il_type_name (l_class_c.name.twin, a_prefix)
143 manus 34253 end
144 manus 29681 end
145 manus 11218 end
146    
147 grator 18 description: ATTR_DESC is
148     -- Type description for skeletons
149     local
150 michaels 7681 exp: EXPANDED_DESC
151     ref: REFERENCE_DESC
152 grator 485 do
153 manus 41824 if is_expanded then
154 julieng 37663 create exp
155 manus 42413 exp.set_cl_type_i (Current)
156 manus 13232 exp.set_type_i (Current)
157 manus 9655 Result := exp
158 grator 18 else
159 manus 9655 Result := c_type.description
160 manus 42413 ref ?= Result
161     if ref /= Void then
162     ref.set_type_i (Current)
163     end
164 manus 9655 end
165     end
166 grator 18
167     c_type: TYPE_C is
168     -- Associated C type
169     do
170 manus 9655 Result := Reference_c_type
171     end
172 manus 42413
173     reference_type: CL_TYPE_I is
174     -- Associated reference type of Current
175     do
176     if not is_expanded then
177     Result := Current
178     else
179     Result := twin
180     Result.set_is_expanded (False)
181     end
182     end
183    
184     associated_reference_class_type: CLASS_TYPE is
185     -- Reference class type of Current
186     do
187     Result := reference_type.associated_class_type
188     end
189 manus 28618
190 grator 18 associated_class_type: CLASS_TYPE is
191     -- Associated class type
192 michaels 7681 require
193 manus 42865 has: has_associated_class_type
194 grator 485 do
195 manus 41824 Result := base_class.types.search_item (Current)
196 manus 9655 end
197 grator 18
198     type_id: INTEGER is
199     -- Type id of the correponding class type
200     do
201 manus 9655 Result := associated_class_type.type_id
202     end
203 grator 18
204 manus 26913 sk_value: INTEGER is
205     -- Generate SK value associated to the current type.
206 grator 18 do
207 manus 41824 if is_expanded then
208     Result := Sk_exp | (type_id - 1)
209     else
210 manus 31263 Result := Sk_ref | (type_id - 1)
211 manus 9655 end
212     end
213 grator 18
214     hash_code: INTEGER is
215     -- Hash code for current type
216     do
217 manus 30293 Result := Other_code + class_id
218 manus 9655 end
219 grator 18
220 manus 26913 feature -- Status
221    
222 manus 31541 element_type: INTEGER_8 is
223     -- Void element type
224     do
225 manus 41824 if is_expanded then
226 manus 31580 -- We only support expanded for external class at the moment.
227 manus 31541 Result := feature {MD_SIGNATURE_CONSTANTS}.Element_type_valuetype
228     else
229 manus 37130 if class_id = System.system_string_class.compiled_class.class_id then
230 manus 31541 Result := feature {MD_SIGNATURE_CONSTANTS}.Element_type_string
231 manus 44032 elseif class_id = System.system_object_id or class_id = system.any_id then
232     -- For ANY or SYSTEM_OBJECT, we always generate a System.Object
233     -- signature since we can now assign SYSTEM_OBJECTs into ANYs.
234 manus 31541 Result := feature {MD_SIGNATURE_CONSTANTS}.Element_type_object
235     else
236     Result := feature {MD_SIGNATURE_CONSTANTS}.Element_type_class
237     end
238     end
239     end
240    
241 manus 41824 tuple_code: INTEGER_8 is
242     -- Tuple code for class type
243     do
244     Result := feature {SHARED_GEN_CONF_LEVEL}.reference_tuple_code
245     end
246    
247     is_expanded: BOOLEAN
248 manus 26913 -- Is the type expanded?
249    
250     is_separate: BOOLEAN
251     -- Is the type separate?
252    
253     is_enum: BOOLEAN is
254     -- Is current type an IL enum type?
255     -- Useful to find out if some call optimization can be done
256     -- in FEATURE_B.
257     require
258     il_generation: System.il_generation
259 grator 18 do
260 manus 41824 Result := is_expanded and then base_class.is_enum
261 manus 26913 end
262    
263 manus 28380 is_external: BOOLEAN is
264 manus 41824 -- Is current type based on an external class?
265     local
266     l_base_class: like base_class
267 manus 28380 do
268 manus 41824 -- All Eiffel basic types are externals, and only basic types used
269     -- as reference are not external.
270     l_base_class := base_class
271     Result := is_basic or (not l_base_class.is_basic and l_base_class.is_external)
272 manus 28380 end
273 manus 41824
274     is_generated_as_single_type: BOOLEAN is
275     -- Is associated type generated as a single type or as an interface type and
276     -- an implementation type.
277     do
278 manus 44032 -- External classes have only one type.
279     Result := is_external
280 manus 41824 if not Result then
281 manus 44032 -- Expanded classes, or classes that inherits from external classes
282     -- have only one generated type.
283     -- FIXME: Manu 06/28/2004: Expanded cannot yet be generated as single type.
284     -- Result := is_expanded or base_class.is_single
285     Result := base_class.is_single
286 manus 41824 end
287     end
288 manus 28380
289 manus 26913 is_valid: BOOLEAN is
290 manus 35544 -- Is the base class still in the system and matches its specification?
291 manus 41824 local
292     l_base_class: like base_class
293 manus 26913 do
294 manus 41824 l_base_class := base_class
295     Result := l_base_class /= Void and then (l_base_class.generics = Void)
296 manus 26913 end
297    
298     is_reference: BOOLEAN is
299     -- Is the type a reference type ?
300     do
301 manus 41824 Result := not is_expanded
302 manus 26913 end;
303    
304     is_explicit: BOOLEAN is
305 manus 39713 -- Is Current type fixed at compile time?
306 manus 26913 do
307 manus 39713 if cr_info /= Void then
308     Result := cr_info.is_explicit
309     else
310     Result := True
311     end
312 manus 26913 end
313    
314     has_associated_class_type: BOOLEAN is
315     -- Has `Current' an associated class type?
316     do
317 manus 41824 Result := base_class.types.has_type (Current)
318 manus 9655 end
319 grator 18
320 manus 26913 same_as (other: TYPE_I): BOOLEAN is
321     -- Is `other' equal to Current ?
322     local
323     other_cl_type: CL_TYPE_I
324 grator 508 do
325 manus 26913 other_cl_type ?= other
326     Result := other_cl_type /= Void -- FIXME
327 manus 30293 and then other_cl_type.class_id = class_id
328 manus 41824 and then other_cl_type.is_expanded = is_expanded
329 manus 26913 and then other_cl_type.is_separate = is_separate
330     and then other_cl_type.meta_generic = Void
331     and then other_cl_type.true_generics = Void
332     end
333    
334     feature -- Setting
335    
336 manus 41824 set_is_expanded (b: BOOLEAN) is
337     -- Assign `b' to `is_expanded'.
338 manus 26913 do
339 manus 41824 is_expanded := b
340 manus 35178 ensure
341 manus 41824 is_expanded_set: is_expanded = b
342 manus 26913 end
343    
344     set_is_separate (b: BOOLEAN) is
345     -- Assign `b' to `is_separate'.
346     do
347     is_separate := b
348 manus 35178 ensure
349     is_separate_set: is_separate = b
350 manus 26913 end
351    
352     set_cr_info (cinfo : CREATE_INFO) is
353     -- Set `cr_info' to `cinfo'.
354 manus 30224 require
355     create_info_not_void: cinfo /= Void
356 manus 41824 not_expanded: not is_expanded
357 manus 26913 do
358     cr_info := cinfo
359     ensure
360     cr_info_set : cr_info = cinfo
361     end
362    
363     feature -- C generation
364    
365 manus 43364 generate_expanded_creation (buffer: GENERATION_BUFFER; target_name: STRING) is
366 manus 35665 -- Generate creation of expanded object associated to Current.
367     do
368 manus 43364 associated_class_type.generate_expanded_creation (buffer, target_name)
369     end
370 manus 35665
371 manus 43364 generate_expanded_initialization (buffer: GENERATION_BUFFER; target_name: STRING) is
372     -- Generate creation of expanded object associated to Current.
373     do
374     associated_class_type.generate_expanded_initialization (buffer, target_name, target_name, True)
375 manus 35665 end
376    
377 manus 26913 generate_cecil_value (buffer: GENERATION_BUFFER) is
378     -- Generate cecil value
379     do
380 manus 41824 if not is_expanded then
381 manus 43084 buffer.put_string ("SK_REF + (uint32) ")
382 grator 508 else
383 manus 43084 buffer.put_string ("SK_EXP + (uint32) ")
384 manus 9655 end
385 manus 43084 buffer.put_type_id (associated_class_type.type_id)
386 manus 9655 end
387 grator 508
388 grator 930 feature -- Array optimization
389    
390     conforms_to_array: BOOLEAN is
391     do
392     Result := base_class.conform_to (array_class_c)
393 manus 9655 end
394 grator 930
395     feature {NONE} -- Array optimization
396    
397     array_class_c: CLASS_C is
398     once
399     Result := System.array_class.compiled_class
400 manus 9655 end
401 grator 930
402 manus 10818 feature -- Generic conformance
403    
404     generated_id (final_mode : BOOLEAN) : INTEGER is
405 manus 11298
406 manus 10818 do
407 manus 11298 if final_mode then
408     Result := type_id - 1
409 manus 10818 else
410 manus 41824 Result := associated_class_type.static_type_id - 1
411 manus 10818 end
412     end
413    
414 manus 11599 generate_cid (buffer : GENERATION_BUFFER; final_mode, use_info : BOOLEAN) is
415 manus 11298
416 manus 10818 do
417 manus 11209 if
418     use_info and then (cr_info /= Void)
419 manus 26913 and then not is_expanded
420 manus 11209 then
421 manus 43156 -- It's an anchored type
422 manus 11599 cr_info.generate_cid (buffer, final_mode)
423 manus 39412 else
424 manus 43084 buffer.put_integer (generated_id (final_mode))
425 manus 43156 buffer.put_character (',')
426 manus 10890 end
427 manus 10818 end
428    
429 manus 10890 make_gen_type_byte_code (ba : BYTE_ARRAY; use_info : BOOLEAN) is
430 manus 10818 do
431 manus 11209 if
432     use_info and then (cr_info /= Void)
433 manus 26913 and then not is_expanded
434 manus 11209 then
435     -- It's an anchored type
436 manus 10890 cr_info.make_gen_type_byte_code (ba)
437 manus 39412 else
438     ba.append_short_integer (generated_id (False))
439 manus 10890 end
440 manus 10818 end
441    
442 manus 14013 generate_cid_array (buffer : GENERATION_BUFFER;
443     final_mode, use_info : BOOLEAN; idx_cnt : COUNTER) is
444     local
445     dummy : INTEGER
446     do
447     if
448     use_info and then (cr_info /= Void)
449 manus 26913 and then not is_expanded
450 manus 14013 then
451 manus 39412 -- It's an anchored type
452 manus 14013 cr_info.generate_cid_array (buffer, final_mode, idx_cnt)
453 manus 39412 else
454 manus 43084 buffer.put_integer (generated_id (final_mode))
455 manus 43156 buffer.put_character (',')
456 manus 39412
457     -- Increment counter
458     dummy := idx_cnt.next
459 manus 14013 end
460     end
461    
462     generate_cid_init (buffer : GENERATION_BUFFER;
463     final_mode, use_info : BOOLEAN; idx_cnt : COUNTER) is
464     local
465     dummy : INTEGER
466     do
467     if
468     use_info and then (cr_info /= Void)
469 manus 26913 and then not is_expanded
470 manus 14013 then
471     -- It's an anchored type
472     cr_info.generate_cid_init (buffer, final_mode, idx_cnt)
473 manus 39412 else
474     dummy := idx_cnt.next
475 manus 14013 end
476     end
477 manus 30169
478     feature -- Generic conformance for IL
479    
480     generate_gen_type_il (il_generator: IL_CODE_GENERATOR; use_info : BOOLEAN) is
481     -- `use_info' is true iff we generate code for a
482     -- creation instruction.
483     do
484     if use_info and then cr_info /= Void then
485 manus 30582 -- It's an anchored type, we call feature
486     -- that will tell us the real type of the
487     -- anchor in the context of Current.
488     cr_info.generate_il_type
489     else
490     il_generator.generate_class_type_instance (Current)
491 manus 30169 end
492     end
493    
494 manus 33952 feature {NONE} -- Implementation
495    
496 manus 43828 base_name: STRING is
497     -- String that should be displayed in debugger to represent `Current'.
498     local
499     l_base_class: like base_class
500     do
501     create Result.make (32)
502     l_base_class := base_class
503     if is_expanded and not l_base_class.is_expanded then
504     Result.append ("expanded ")
505     elseif not is_expanded and l_base_class.is_expanded then
506     Result.append ("reference ")
507     elseif is_separate then
508     Result.append ("separate ")
509     end
510     Result.append (l_base_class.name)
511     end
512    
513 manus 41824 frozen internal_il_type_name (a_base_name, a_prefix: STRING): STRING is
514 manus 33952 -- Full type name of `a_base_name' using `a_prefix' in IL code generation
515     -- with namespace specification
516     require
517     a_base_name_not_void: a_base_name /= Void
518     local
519     l_name: STRING
520 manus 41824 l_base_class: like base_class
521 manus 33952 do
522 manus 41824 l_base_class := base_class
523     -- Result needs to be in lower case because that's
524     -- what our casing conversion routines require to perform
525     -- a good job.
526     if
527     (is_expanded and l_base_class.is_expanded) or
528     (not is_expanded and not l_base_class.is_expanded)
529     then
530     Result := a_base_name.as_lower
531     else
532     if is_expanded then
533     create Result.make (6 + a_base_name.count)
534     Result.append ("VALUE_")
535     else
536     create Result.make (10 + a_base_name.count)
537     Result.append ("REFERENCE_")
538     end
539     Result.append (a_base_name)
540     Result.to_lower
541     end
542     l_name := l_base_class.lace_class.actual_namespace
543 manus 33952 if a_prefix /= Void then
544     if l_name.is_empty then
545     l_name := a_prefix + "."
546     else
547 manus 34253 l_name := il_casing.namespace_casing (System.dotnet_naming_convention,
548     l_name) + "." + a_prefix + "."
549 manus 33952 end
550     else
551     if not l_name.is_empty then
552 manus 34253 l_name := il_casing.namespace_casing (System.dotnet_naming_convention,
553     l_name) + "."
554 manus 33952 end
555     end
556 manus 34253 Result := l_name + il_casing.pascal_casing (System.dotnet_naming_convention,
557     Result, feature {IL_CASING_CONVERSION}.upper_case)
558 manus 33952 ensure
559     internal_il_type_name_not_void: Result /= Void
560     internal_il_type_name_not_empty: not Result.is_empty
561     end
562    
563 manus 41824 invariant
564     class_id_positive: class_id > 0
565    
566 grator 18 end

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