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Revision 43989 - (hide annotations)
Mon Jun 28 20:05:51 2004 UTC (15 years, 8 months ago) by manus
Original Path: trunk/Src/bench/Eiffel/eiffel/genericity/cl_type_i.e
File size: 13834 byte(s)
Single type code generation is not yet perfect especially with inherited
routine using generic types. So we make sure that it is enabled only
when it is necessary.

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 37130 elseif class_id = System.system_object_id then
232 manus 31541 Result := feature {MD_SIGNATURE_CONSTANTS}.Element_type_object
233     else
234     Result := feature {MD_SIGNATURE_CONSTANTS}.Element_type_class
235     end
236     end
237     end
238    
239 manus 41824 tuple_code: INTEGER_8 is
240     -- Tuple code for class type
241     do
242     Result := feature {SHARED_GEN_CONF_LEVEL}.reference_tuple_code
243     end
244    
245     is_expanded: BOOLEAN
246 manus 26913 -- Is the type expanded?
247    
248     is_separate: BOOLEAN
249     -- Is the type separate?
250    
251     is_enum: BOOLEAN is
252     -- Is current type an IL enum type?
253     -- Useful to find out if some call optimization can be done
254     -- in FEATURE_B.
255     require
256     il_generation: System.il_generation
257 grator 18 do
258 manus 41824 Result := is_expanded and then base_class.is_enum
259 manus 26913 end
260    
261 manus 28380 is_external: BOOLEAN is
262 manus 41824 -- Is current type based on an external class?
263     local
264     l_base_class: like base_class
265 manus 28380 do
266 manus 41824 -- All Eiffel basic types are externals, and only basic types used
267     -- as reference are not external.
268     l_base_class := base_class
269     Result := is_basic or (not l_base_class.is_basic and l_base_class.is_external)
270 manus 28380 end
271 manus 41824
272     is_generated_as_single_type: BOOLEAN is
273     -- Is associated type generated as a single type or as an interface type and
274     -- an implementation type.
275     local
276     l_class: CLASS_C
277     do
278 manus 43989 -- FIXME: Manu 06/28/2004: Expanded cannot yet be generated as single type.
279 manus 41824 -- Expanded types do not have an interface since no polymorphic calls
280     -- are done on them.
281 manus 43989 -- Result := is_expanded
282 manus 41824 if not Result then
283     l_class := base_class
284     -- When `base_class' is a basic class and that we are here, it means
285     -- that we are handling the reference version of the basic type, which
286     -- needs to be generated with the interface type and the implementation type
287     if not l_class.is_basic then
288     -- External classes, or classes marked `frozen', or that
289     -- inherites from external classes have only one generated type.
290 manus 43301 Result := l_class.is_single or l_class.is_external
291 manus 41824 end
292     end
293     end
294 manus 28380
295 manus 26913 is_valid: BOOLEAN is
296 manus 35544 -- Is the base class still in the system and matches its specification?
297 manus 41824 local
298     l_base_class: like base_class
299 manus 26913 do
300 manus 41824 l_base_class := base_class
301     Result := l_base_class /= Void and then (l_base_class.generics = Void)
302 manus 26913 end
303    
304     is_reference: BOOLEAN is
305     -- Is the type a reference type ?
306     do
307 manus 41824 Result := not is_expanded
308 manus 26913 end;
309    
310     is_explicit: BOOLEAN is
311 manus 39713 -- Is Current type fixed at compile time?
312 manus 26913 do
313 manus 39713 if cr_info /= Void then
314     Result := cr_info.is_explicit
315     else
316     Result := True
317     end
318 manus 26913 end
319    
320     has_associated_class_type: BOOLEAN is
321     -- Has `Current' an associated class type?
322     do
323 manus 41824 Result := base_class.types.has_type (Current)
324 manus 9655 end
325 grator 18
326 manus 26913 same_as (other: TYPE_I): BOOLEAN is
327     -- Is `other' equal to Current ?
328     local
329     other_cl_type: CL_TYPE_I
330 grator 508 do
331 manus 26913 other_cl_type ?= other
332     Result := other_cl_type /= Void -- FIXME
333 manus 30293 and then other_cl_type.class_id = class_id
334 manus 41824 and then other_cl_type.is_expanded = is_expanded
335 manus 26913 and then other_cl_type.is_separate = is_separate
336     and then other_cl_type.meta_generic = Void
337     and then other_cl_type.true_generics = Void
338     end
339    
340     feature -- Setting
341    
342 manus 41824 set_is_expanded (b: BOOLEAN) is
343     -- Assign `b' to `is_expanded'.
344 manus 26913 do
345 manus 41824 is_expanded := b
346 manus 35178 ensure
347 manus 41824 is_expanded_set: is_expanded = b
348 manus 26913 end
349    
350     set_is_separate (b: BOOLEAN) is
351     -- Assign `b' to `is_separate'.
352     do
353     is_separate := b
354 manus 35178 ensure
355     is_separate_set: is_separate = b
356 manus 26913 end
357    
358     set_cr_info (cinfo : CREATE_INFO) is
359     -- Set `cr_info' to `cinfo'.
360 manus 30224 require
361     create_info_not_void: cinfo /= Void
362 manus 41824 not_expanded: not is_expanded
363 manus 26913 do
364     cr_info := cinfo
365     ensure
366     cr_info_set : cr_info = cinfo
367     end
368    
369     feature -- C generation
370    
371 manus 43364 generate_expanded_creation (buffer: GENERATION_BUFFER; target_name: STRING) is
372 manus 35665 -- Generate creation of expanded object associated to Current.
373     do
374 manus 43364 associated_class_type.generate_expanded_creation (buffer, target_name)
375     end
376 manus 35665
377 manus 43364 generate_expanded_initialization (buffer: GENERATION_BUFFER; target_name: STRING) is
378     -- Generate creation of expanded object associated to Current.
379     do
380     associated_class_type.generate_expanded_initialization (buffer, target_name, target_name, True)
381 manus 35665 end
382    
383 manus 26913 generate_cecil_value (buffer: GENERATION_BUFFER) is
384     -- Generate cecil value
385     do
386 manus 41824 if not is_expanded then
387 manus 43084 buffer.put_string ("SK_REF + (uint32) ")
388 grator 508 else
389 manus 43084 buffer.put_string ("SK_EXP + (uint32) ")
390 manus 9655 end
391 manus 43084 buffer.put_type_id (associated_class_type.type_id)
392 manus 9655 end
393 grator 508
394 grator 930 feature -- Array optimization
395    
396     conforms_to_array: BOOLEAN is
397     do
398     Result := base_class.conform_to (array_class_c)
399 manus 9655 end
400 grator 930
401     feature {NONE} -- Array optimization
402    
403     array_class_c: CLASS_C is
404     once
405     Result := System.array_class.compiled_class
406 manus 9655 end
407 grator 930
408 manus 10818 feature -- Generic conformance
409    
410     generated_id (final_mode : BOOLEAN) : INTEGER is
411 manus 11298
412 manus 10818 do
413 manus 11298 if final_mode then
414     Result := type_id - 1
415 manus 10818 else
416 manus 41824 Result := associated_class_type.static_type_id - 1
417 manus 10818 end
418     end
419    
420 manus 11599 generate_cid (buffer : GENERATION_BUFFER; final_mode, use_info : BOOLEAN) is
421 manus 11298
422 manus 10818 do
423 manus 11209 if
424     use_info and then (cr_info /= Void)
425 manus 26913 and then not is_expanded
426 manus 11209 then
427 manus 43156 -- It's an anchored type
428 manus 11599 cr_info.generate_cid (buffer, final_mode)
429 manus 39412 else
430 manus 43084 buffer.put_integer (generated_id (final_mode))
431 manus 43156 buffer.put_character (',')
432 manus 10890 end
433 manus 10818 end
434    
435 manus 10890 make_gen_type_byte_code (ba : BYTE_ARRAY; use_info : BOOLEAN) is
436 manus 10818 do
437 manus 11209 if
438     use_info and then (cr_info /= Void)
439 manus 26913 and then not is_expanded
440 manus 11209 then
441     -- It's an anchored type
442 manus 10890 cr_info.make_gen_type_byte_code (ba)
443 manus 39412 else
444     ba.append_short_integer (generated_id (False))
445 manus 10890 end
446 manus 10818 end
447    
448 manus 14013 generate_cid_array (buffer : GENERATION_BUFFER;
449     final_mode, use_info : BOOLEAN; idx_cnt : COUNTER) is
450     local
451     dummy : INTEGER
452     do
453     if
454     use_info and then (cr_info /= Void)
455 manus 26913 and then not is_expanded
456 manus 14013 then
457 manus 39412 -- It's an anchored type
458 manus 14013 cr_info.generate_cid_array (buffer, final_mode, idx_cnt)
459 manus 39412 else
460 manus 43084 buffer.put_integer (generated_id (final_mode))
461 manus 43156 buffer.put_character (',')
462 manus 39412
463     -- Increment counter
464     dummy := idx_cnt.next
465 manus 14013 end
466     end
467    
468     generate_cid_init (buffer : GENERATION_BUFFER;
469     final_mode, use_info : BOOLEAN; idx_cnt : COUNTER) is
470     local
471     dummy : INTEGER
472     do
473     if
474     use_info and then (cr_info /= Void)
475 manus 26913 and then not is_expanded
476 manus 14013 then
477     -- It's an anchored type
478     cr_info.generate_cid_init (buffer, final_mode, idx_cnt)
479 manus 39412 else
480     dummy := idx_cnt.next
481 manus 14013 end
482     end
483 manus 30169
484     feature -- Generic conformance for IL
485    
486     generate_gen_type_il (il_generator: IL_CODE_GENERATOR; use_info : BOOLEAN) is
487     -- `use_info' is true iff we generate code for a
488     -- creation instruction.
489     do
490     if use_info and then cr_info /= Void then
491 manus 30582 -- It's an anchored type, we call feature
492     -- that will tell us the real type of the
493     -- anchor in the context of Current.
494     cr_info.generate_il_type
495     else
496     il_generator.generate_class_type_instance (Current)
497 manus 30169 end
498     end
499    
500 manus 33952 feature {NONE} -- Implementation
501    
502 manus 43828 base_name: STRING is
503     -- String that should be displayed in debugger to represent `Current'.
504     local
505     l_base_class: like base_class
506     do
507     create Result.make (32)
508     l_base_class := base_class
509     if is_expanded and not l_base_class.is_expanded then
510     Result.append ("expanded ")
511     elseif not is_expanded and l_base_class.is_expanded then
512     Result.append ("reference ")
513     elseif is_separate then
514     Result.append ("separate ")
515     end
516     Result.append (l_base_class.name)
517     end
518    
519 manus 41824 frozen internal_il_type_name (a_base_name, a_prefix: STRING): STRING is
520 manus 33952 -- Full type name of `a_base_name' using `a_prefix' in IL code generation
521     -- with namespace specification
522     require
523     a_base_name_not_void: a_base_name /= Void
524     local
525     l_name: STRING
526 manus 41824 l_base_class: like base_class
527 manus 33952 do
528 manus 41824 l_base_class := base_class
529     -- Result needs to be in lower case because that's
530     -- what our casing conversion routines require to perform
531     -- a good job.
532     if
533     (is_expanded and l_base_class.is_expanded) or
534     (not is_expanded and not l_base_class.is_expanded)
535     then
536     Result := a_base_name.as_lower
537     else
538     if is_expanded then
539     create Result.make (6 + a_base_name.count)
540     Result.append ("VALUE_")
541     else
542     create Result.make (10 + a_base_name.count)
543     Result.append ("REFERENCE_")
544     end
545     Result.append (a_base_name)
546     Result.to_lower
547     end
548     l_name := l_base_class.lace_class.actual_namespace
549 manus 33952 if a_prefix /= Void then
550     if l_name.is_empty then
551     l_name := a_prefix + "."
552     else
553 manus 34253 l_name := il_casing.namespace_casing (System.dotnet_naming_convention,
554     l_name) + "." + a_prefix + "."
555 manus 33952 end
556     else
557     if not l_name.is_empty then
558 manus 34253 l_name := il_casing.namespace_casing (System.dotnet_naming_convention,
559     l_name) + "."
560 manus 33952 end
561     end
562 manus 34253 Result := l_name + il_casing.pascal_casing (System.dotnet_naming_convention,
563     Result, feature {IL_CASING_CONVERSION}.upper_case)
564 manus 33952 ensure
565     internal_il_type_name_not_void: Result /= Void
566     internal_il_type_name_not_empty: not Result.is_empty
567     end
568    
569 manus 41824 invariant
570     class_id_positive: class_id > 0
571    
572 grator 18 end

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