/[eiffelstudio]/branches/CAT_mono/Src/Eiffel/eiffel/genericity/cl_type_i.e
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Annotation of /branches/CAT_mono/Src/Eiffel/eiffel/genericity/cl_type_i.e

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Revision 44058 - (hide annotations)
Wed Jun 30 23:08:24 2004 UTC (15 years, 8 months ago) by manus
Original Path: trunk/Src/bench/Eiffel/eiffel/genericity/cl_type_i.e
File size: 13405 byte(s)
Changed `is_generated_as_single_type' to be only true for external classes
  and classes which are `is_single'. All other eiffel classes gets an interface
  and an implementation.
Removed comment on `element_type' about the `is_expanded' case since we partially
  support expanded types in IL code generation now.

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 31541 Result := feature {MD_SIGNATURE_CONSTANTS}.Element_type_valuetype
227     else
228 manus 37130 if class_id = System.system_string_class.compiled_class.class_id then
229 manus 31541 Result := feature {MD_SIGNATURE_CONSTANTS}.Element_type_string
230 manus 44032 elseif class_id = System.system_object_id or class_id = system.any_id then
231     -- For ANY or SYSTEM_OBJECT, we always generate a System.Object
232     -- signature since we can now assign SYSTEM_OBJECTs into ANYs.
233 manus 31541 Result := feature {MD_SIGNATURE_CONSTANTS}.Element_type_object
234     else
235     Result := feature {MD_SIGNATURE_CONSTANTS}.Element_type_class
236     end
237     end
238     end
239    
240 manus 41824 tuple_code: INTEGER_8 is
241     -- Tuple code for class type
242     do
243     Result := feature {SHARED_GEN_CONF_LEVEL}.reference_tuple_code
244     end
245    
246     is_expanded: BOOLEAN
247 manus 26913 -- Is the type expanded?
248    
249     is_separate: BOOLEAN
250     -- Is the type separate?
251    
252     is_enum: BOOLEAN is
253     -- Is current type an IL enum type?
254     -- Useful to find out if some call optimization can be done
255     -- in FEATURE_B.
256     require
257     il_generation: System.il_generation
258 grator 18 do
259 manus 41824 Result := is_expanded and then base_class.is_enum
260 manus 26913 end
261    
262 manus 28380 is_external: BOOLEAN is
263 manus 41824 -- Is current type based on an external class?
264     local
265     l_base_class: like base_class
266 manus 28380 do
267 manus 41824 -- All Eiffel basic types are externals, and only basic types used
268     -- as reference are not external.
269     l_base_class := base_class
270     Result := is_basic or (not l_base_class.is_basic and l_base_class.is_external)
271 manus 28380 end
272 manus 41824
273     is_generated_as_single_type: BOOLEAN is
274     -- Is associated type generated as a single type or as an interface type and
275     -- an implementation type.
276     do
277 manus 44032 -- External classes have only one type.
278     Result := is_external
279 manus 41824 if not Result then
280 manus 44058 -- Classes that inherits from external classes
281 manus 44032 -- have only one generated type.
282     Result := base_class.is_single
283 manus 41824 end
284     end
285 manus 28380
286 manus 26913 is_valid: BOOLEAN is
287 manus 35544 -- Is the base class still in the system and matches its specification?
288 manus 41824 local
289     l_base_class: like base_class
290 manus 26913 do
291 manus 41824 l_base_class := base_class
292     Result := l_base_class /= Void and then (l_base_class.generics = Void)
293 manus 26913 end
294    
295     is_reference: BOOLEAN is
296     -- Is the type a reference type ?
297     do
298 manus 41824 Result := not is_expanded
299 manus 26913 end;
300    
301     is_explicit: BOOLEAN is
302 manus 39713 -- Is Current type fixed at compile time?
303 manus 26913 do
304 manus 39713 if cr_info /= Void then
305     Result := cr_info.is_explicit
306     else
307     Result := True
308     end
309 manus 26913 end
310    
311     has_associated_class_type: BOOLEAN is
312     -- Has `Current' an associated class type?
313     do
314 manus 41824 Result := base_class.types.has_type (Current)
315 manus 9655 end
316 grator 18
317 manus 26913 same_as (other: TYPE_I): BOOLEAN is
318     -- Is `other' equal to Current ?
319     local
320     other_cl_type: CL_TYPE_I
321 grator 508 do
322 manus 26913 other_cl_type ?= other
323     Result := other_cl_type /= Void -- FIXME
324 manus 30293 and then other_cl_type.class_id = class_id
325 manus 41824 and then other_cl_type.is_expanded = is_expanded
326 manus 26913 and then other_cl_type.is_separate = is_separate
327     and then other_cl_type.meta_generic = Void
328     and then other_cl_type.true_generics = Void
329     end
330    
331     feature -- Setting
332    
333 manus 41824 set_is_expanded (b: BOOLEAN) is
334     -- Assign `b' to `is_expanded'.
335 manus 26913 do
336 manus 41824 is_expanded := b
337 manus 35178 ensure
338 manus 41824 is_expanded_set: is_expanded = b
339 manus 26913 end
340    
341     set_is_separate (b: BOOLEAN) is
342     -- Assign `b' to `is_separate'.
343     do
344     is_separate := b
345 manus 35178 ensure
346     is_separate_set: is_separate = b
347 manus 26913 end
348    
349     set_cr_info (cinfo : CREATE_INFO) is
350     -- Set `cr_info' to `cinfo'.
351 manus 30224 require
352     create_info_not_void: cinfo /= Void
353 manus 41824 not_expanded: not is_expanded
354 manus 26913 do
355     cr_info := cinfo
356     ensure
357     cr_info_set : cr_info = cinfo
358     end
359    
360     feature -- C generation
361    
362 manus 43364 generate_expanded_creation (buffer: GENERATION_BUFFER; target_name: STRING) is
363 manus 35665 -- Generate creation of expanded object associated to Current.
364     do
365 manus 43364 associated_class_type.generate_expanded_creation (buffer, target_name)
366     end
367 manus 35665
368 manus 43364 generate_expanded_initialization (buffer: GENERATION_BUFFER; target_name: STRING) is
369     -- Generate creation of expanded object associated to Current.
370     do
371     associated_class_type.generate_expanded_initialization (buffer, target_name, target_name, True)
372 manus 35665 end
373    
374 manus 26913 generate_cecil_value (buffer: GENERATION_BUFFER) is
375     -- Generate cecil value
376     do
377 manus 41824 if not is_expanded then
378 manus 43084 buffer.put_string ("SK_REF + (uint32) ")
379 grator 508 else
380 manus 43084 buffer.put_string ("SK_EXP + (uint32) ")
381 manus 9655 end
382 manus 43084 buffer.put_type_id (associated_class_type.type_id)
383 manus 9655 end
384 grator 508
385 grator 930 feature -- Array optimization
386    
387     conforms_to_array: BOOLEAN is
388     do
389     Result := base_class.conform_to (array_class_c)
390 manus 9655 end
391 grator 930
392     feature {NONE} -- Array optimization
393    
394     array_class_c: CLASS_C is
395     once
396     Result := System.array_class.compiled_class
397 manus 9655 end
398 grator 930
399 manus 10818 feature -- Generic conformance
400    
401     generated_id (final_mode : BOOLEAN) : INTEGER is
402 manus 11298
403 manus 10818 do
404 manus 11298 if final_mode then
405     Result := type_id - 1
406 manus 10818 else
407 manus 41824 Result := associated_class_type.static_type_id - 1
408 manus 10818 end
409     end
410    
411 manus 11599 generate_cid (buffer : GENERATION_BUFFER; final_mode, use_info : BOOLEAN) is
412 manus 11298
413 manus 10818 do
414 manus 11209 if
415     use_info and then (cr_info /= Void)
416 manus 26913 and then not is_expanded
417 manus 11209 then
418 manus 43156 -- It's an anchored type
419 manus 11599 cr_info.generate_cid (buffer, final_mode)
420 manus 39412 else
421 manus 43084 buffer.put_integer (generated_id (final_mode))
422 manus 43156 buffer.put_character (',')
423 manus 10890 end
424 manus 10818 end
425    
426 manus 10890 make_gen_type_byte_code (ba : BYTE_ARRAY; use_info : BOOLEAN) is
427 manus 10818 do
428 manus 11209 if
429     use_info and then (cr_info /= Void)
430 manus 26913 and then not is_expanded
431 manus 11209 then
432     -- It's an anchored type
433 manus 10890 cr_info.make_gen_type_byte_code (ba)
434 manus 39412 else
435     ba.append_short_integer (generated_id (False))
436 manus 10890 end
437 manus 10818 end
438    
439 manus 14013 generate_cid_array (buffer : GENERATION_BUFFER;
440     final_mode, use_info : BOOLEAN; idx_cnt : COUNTER) is
441     local
442     dummy : INTEGER
443     do
444     if
445     use_info and then (cr_info /= Void)
446 manus 26913 and then not is_expanded
447 manus 14013 then
448 manus 39412 -- It's an anchored type
449 manus 14013 cr_info.generate_cid_array (buffer, final_mode, idx_cnt)
450 manus 39412 else
451 manus 43084 buffer.put_integer (generated_id (final_mode))
452 manus 43156 buffer.put_character (',')
453 manus 39412
454     -- Increment counter
455     dummy := idx_cnt.next
456 manus 14013 end
457     end
458    
459     generate_cid_init (buffer : GENERATION_BUFFER;
460     final_mode, use_info : BOOLEAN; idx_cnt : COUNTER) is
461     local
462     dummy : INTEGER
463     do
464     if
465     use_info and then (cr_info /= Void)
466 manus 26913 and then not is_expanded
467 manus 14013 then
468     -- It's an anchored type
469     cr_info.generate_cid_init (buffer, final_mode, idx_cnt)
470 manus 39412 else
471     dummy := idx_cnt.next
472 manus 14013 end
473     end
474 manus 30169
475     feature -- Generic conformance for IL
476    
477     generate_gen_type_il (il_generator: IL_CODE_GENERATOR; use_info : BOOLEAN) is
478     -- `use_info' is true iff we generate code for a
479     -- creation instruction.
480     do
481     if use_info and then cr_info /= Void then
482 manus 30582 -- It's an anchored type, we call feature
483     -- that will tell us the real type of the
484     -- anchor in the context of Current.
485     cr_info.generate_il_type
486     else
487     il_generator.generate_class_type_instance (Current)
488 manus 30169 end
489     end
490    
491 manus 33952 feature {NONE} -- Implementation
492    
493 manus 43828 base_name: STRING is
494     -- String that should be displayed in debugger to represent `Current'.
495     local
496     l_base_class: like base_class
497     do
498     create Result.make (32)
499     l_base_class := base_class
500     if is_expanded and not l_base_class.is_expanded then
501     Result.append ("expanded ")
502     elseif not is_expanded and l_base_class.is_expanded then
503     Result.append ("reference ")
504     elseif is_separate then
505     Result.append ("separate ")
506     end
507     Result.append (l_base_class.name)
508     end
509    
510 manus 41824 frozen internal_il_type_name (a_base_name, a_prefix: STRING): STRING is
511 manus 33952 -- Full type name of `a_base_name' using `a_prefix' in IL code generation
512     -- with namespace specification
513     require
514     a_base_name_not_void: a_base_name /= Void
515     local
516     l_name: STRING
517 manus 41824 l_base_class: like base_class
518 manus 33952 do
519 manus 41824 l_base_class := base_class
520     -- Result needs to be in lower case because that's
521     -- what our casing conversion routines require to perform
522     -- a good job.
523     if
524     (is_expanded and l_base_class.is_expanded) or
525     (not is_expanded and not l_base_class.is_expanded)
526     then
527     Result := a_base_name.as_lower
528     else
529     if is_expanded then
530     create Result.make (6 + a_base_name.count)
531     Result.append ("VALUE_")
532     else
533     create Result.make (10 + a_base_name.count)
534     Result.append ("REFERENCE_")
535     end
536     Result.append (a_base_name)
537     Result.to_lower
538     end
539     l_name := l_base_class.lace_class.actual_namespace
540 manus 33952 if a_prefix /= Void then
541     if l_name.is_empty then
542     l_name := a_prefix + "."
543     else
544 manus 34253 l_name := il_casing.namespace_casing (System.dotnet_naming_convention,
545     l_name) + "." + a_prefix + "."
546 manus 33952 end
547     else
548     if not l_name.is_empty then
549 manus 34253 l_name := il_casing.namespace_casing (System.dotnet_naming_convention,
550     l_name) + "."
551 manus 33952 end
552     end
553 manus 34253 Result := l_name + il_casing.pascal_casing (System.dotnet_naming_convention,
554     Result, feature {IL_CASING_CONVERSION}.upper_case)
555 manus 33952 ensure
556     internal_il_type_name_not_void: Result /= Void
557     internal_il_type_name_not_empty: not Result.is_empty
558     end
559    
560 manus 41824 invariant
561     class_id_positive: class_id > 0
562    
563 grator 18 end

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