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Revision 44445 - (hide annotations)
Wed Jul 21 05:31:04 2004 UTC (15 years, 7 months ago) by manus
Original Path: trunk/Src/bench/Eiffel/eiffel/genericity/cl_type_i.e
File size: 12959 byte(s)
Removed support for `reference X' types:
  - removed `reference_type' from CL_TYPE_I and moved it to BASIC_I, as
    we only need it on basic types to allow an optimized conversion expanded<->reference.
	`reference_type' is deferred in BASIC_I and implemented in each basic type
	class using the _REF class.
  - same for `associated_reference_class_type'.

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 grator 18 associated_class_type: CLASS_TYPE is
174     -- Associated class type
175 michaels 7681 require
176 manus 42865 has: has_associated_class_type
177 grator 485 do
178 manus 41824 Result := base_class.types.search_item (Current)
179 manus 9655 end
180 grator 18
181     type_id: INTEGER is
182     -- Type id of the correponding class type
183     do
184 manus 9655 Result := associated_class_type.type_id
185     end
186 grator 18
187 manus 26913 sk_value: INTEGER is
188     -- Generate SK value associated to the current type.
189 grator 18 do
190 manus 41824 if is_expanded then
191     Result := Sk_exp | (type_id - 1)
192     else
193 manus 31263 Result := Sk_ref | (type_id - 1)
194 manus 9655 end
195     end
196 grator 18
197     hash_code: INTEGER is
198     -- Hash code for current type
199     do
200 manus 30293 Result := Other_code + class_id
201 manus 9655 end
202 grator 18
203 manus 26913 feature -- Status
204    
205 manus 31541 element_type: INTEGER_8 is
206     -- Void element type
207     do
208 manus 41824 if is_expanded then
209 manus 31541 Result := feature {MD_SIGNATURE_CONSTANTS}.Element_type_valuetype
210     else
211 manus 37130 if class_id = System.system_string_class.compiled_class.class_id then
212 manus 31541 Result := feature {MD_SIGNATURE_CONSTANTS}.Element_type_string
213 manus 44032 elseif class_id = System.system_object_id or class_id = system.any_id then
214     -- For ANY or SYSTEM_OBJECT, we always generate a System.Object
215     -- signature since we can now assign SYSTEM_OBJECTs into ANYs.
216 manus 31541 Result := feature {MD_SIGNATURE_CONSTANTS}.Element_type_object
217     else
218     Result := feature {MD_SIGNATURE_CONSTANTS}.Element_type_class
219     end
220     end
221     end
222    
223 manus 41824 tuple_code: INTEGER_8 is
224     -- Tuple code for class type
225     do
226     Result := feature {SHARED_GEN_CONF_LEVEL}.reference_tuple_code
227     end
228    
229     is_expanded: BOOLEAN
230 manus 26913 -- Is the type expanded?
231    
232     is_separate: BOOLEAN
233     -- Is the type separate?
234    
235     is_enum: BOOLEAN is
236     -- Is current type an IL enum type?
237     -- Useful to find out if some call optimization can be done
238     -- in FEATURE_B.
239     require
240     il_generation: System.il_generation
241 grator 18 do
242 manus 41824 Result := is_expanded and then base_class.is_enum
243 manus 26913 end
244    
245 manus 28380 is_external: BOOLEAN is
246 manus 41824 -- Is current type based on an external class?
247     local
248     l_base_class: like base_class
249 manus 28380 do
250 manus 41824 -- All Eiffel basic types are externals, and only basic types used
251     -- as reference are not external.
252     l_base_class := base_class
253     Result := is_basic or (not l_base_class.is_basic and l_base_class.is_external)
254 manus 28380 end
255 manus 41824
256     is_generated_as_single_type: BOOLEAN is
257     -- Is associated type generated as a single type or as an interface type and
258     -- an implementation type.
259     do
260 manus 44032 -- External classes have only one type.
261     Result := is_external
262 manus 41824 if not Result then
263 manus 44058 -- Classes that inherits from external classes
264 manus 44032 -- have only one generated type.
265     Result := base_class.is_single
266 manus 41824 end
267     end
268 manus 28380
269 manus 26913 is_valid: BOOLEAN is
270 manus 35544 -- Is the base class still in the system and matches its specification?
271 manus 41824 local
272     l_base_class: like base_class
273 manus 26913 do
274 manus 41824 l_base_class := base_class
275     Result := l_base_class /= Void and then (l_base_class.generics = Void)
276 manus 26913 end
277    
278     is_reference: BOOLEAN is
279     -- Is the type a reference type ?
280     do
281 manus 41824 Result := not is_expanded
282 manus 26913 end;
283    
284     is_explicit: BOOLEAN is
285 manus 39713 -- Is Current type fixed at compile time?
286 manus 26913 do
287 manus 39713 if cr_info /= Void then
288     Result := cr_info.is_explicit
289     else
290     Result := True
291     end
292 manus 26913 end
293    
294     has_associated_class_type: BOOLEAN is
295     -- Has `Current' an associated class type?
296     do
297 manus 41824 Result := base_class.types.has_type (Current)
298 manus 9655 end
299 grator 18
300 manus 26913 same_as (other: TYPE_I): BOOLEAN is
301     -- Is `other' equal to Current ?
302     local
303     other_cl_type: CL_TYPE_I
304 grator 508 do
305 manus 26913 other_cl_type ?= other
306     Result := other_cl_type /= Void -- FIXME
307 manus 30293 and then other_cl_type.class_id = class_id
308 manus 41824 and then other_cl_type.is_expanded = is_expanded
309 manus 26913 and then other_cl_type.is_separate = is_separate
310     and then other_cl_type.meta_generic = Void
311     and then other_cl_type.true_generics = Void
312     end
313    
314     feature -- Setting
315    
316 manus 41824 set_is_expanded (b: BOOLEAN) is
317     -- Assign `b' to `is_expanded'.
318 manus 26913 do
319 manus 41824 is_expanded := b
320 manus 35178 ensure
321 manus 41824 is_expanded_set: is_expanded = b
322 manus 26913 end
323    
324     set_is_separate (b: BOOLEAN) is
325     -- Assign `b' to `is_separate'.
326     do
327     is_separate := b
328 manus 35178 ensure
329     is_separate_set: is_separate = b
330 manus 26913 end
331    
332     set_cr_info (cinfo : CREATE_INFO) is
333     -- Set `cr_info' to `cinfo'.
334 manus 30224 require
335     create_info_not_void: cinfo /= Void
336 manus 41824 not_expanded: not is_expanded
337 manus 26913 do
338     cr_info := cinfo
339     ensure
340     cr_info_set : cr_info = cinfo
341     end
342    
343     feature -- C generation
344    
345 manus 43364 generate_expanded_creation (buffer: GENERATION_BUFFER; target_name: STRING) is
346 manus 35665 -- Generate creation of expanded object associated to Current.
347     do
348 manus 43364 associated_class_type.generate_expanded_creation (buffer, target_name)
349     end
350 manus 35665
351 manus 43364 generate_expanded_initialization (buffer: GENERATION_BUFFER; target_name: STRING) is
352     -- Generate creation of expanded object associated to Current.
353     do
354     associated_class_type.generate_expanded_initialization (buffer, target_name, target_name, True)
355 manus 35665 end
356    
357 manus 26913 generate_cecil_value (buffer: GENERATION_BUFFER) is
358     -- Generate cecil value
359     do
360 manus 41824 if not is_expanded then
361 manus 43084 buffer.put_string ("SK_REF + (uint32) ")
362 grator 508 else
363 manus 43084 buffer.put_string ("SK_EXP + (uint32) ")
364 manus 9655 end
365 manus 43084 buffer.put_type_id (associated_class_type.type_id)
366 manus 9655 end
367 grator 508
368 grator 930 feature -- Array optimization
369    
370     conforms_to_array: BOOLEAN is
371     do
372     Result := base_class.conform_to (array_class_c)
373 manus 9655 end
374 grator 930
375     feature {NONE} -- Array optimization
376    
377     array_class_c: CLASS_C is
378     once
379     Result := System.array_class.compiled_class
380 manus 9655 end
381 grator 930
382 manus 10818 feature -- Generic conformance
383    
384     generated_id (final_mode : BOOLEAN) : INTEGER is
385 manus 11298
386 manus 10818 do
387 manus 11298 if final_mode then
388     Result := type_id - 1
389 manus 10818 else
390 manus 41824 Result := associated_class_type.static_type_id - 1
391 manus 10818 end
392     end
393    
394 manus 11599 generate_cid (buffer : GENERATION_BUFFER; final_mode, use_info : BOOLEAN) is
395 manus 11298
396 manus 10818 do
397 manus 11209 if
398     use_info and then (cr_info /= Void)
399 manus 26913 and then not is_expanded
400 manus 11209 then
401 manus 43156 -- It's an anchored type
402 manus 11599 cr_info.generate_cid (buffer, final_mode)
403 manus 39412 else
404 manus 43084 buffer.put_integer (generated_id (final_mode))
405 manus 43156 buffer.put_character (',')
406 manus 10890 end
407 manus 10818 end
408    
409 manus 10890 make_gen_type_byte_code (ba : BYTE_ARRAY; use_info : BOOLEAN) is
410 manus 10818 do
411 manus 11209 if
412     use_info and then (cr_info /= Void)
413 manus 26913 and then not is_expanded
414 manus 11209 then
415     -- It's an anchored type
416 manus 10890 cr_info.make_gen_type_byte_code (ba)
417 manus 39412 else
418     ba.append_short_integer (generated_id (False))
419 manus 10890 end
420 manus 10818 end
421    
422 manus 14013 generate_cid_array (buffer : GENERATION_BUFFER;
423     final_mode, use_info : BOOLEAN; idx_cnt : COUNTER) is
424     local
425     dummy : INTEGER
426     do
427     if
428     use_info and then (cr_info /= Void)
429 manus 26913 and then not is_expanded
430 manus 14013 then
431 manus 39412 -- It's an anchored type
432 manus 14013 cr_info.generate_cid_array (buffer, final_mode, idx_cnt)
433 manus 39412 else
434 manus 43084 buffer.put_integer (generated_id (final_mode))
435 manus 43156 buffer.put_character (',')
436 manus 39412
437     -- Increment counter
438     dummy := idx_cnt.next
439 manus 14013 end
440     end
441    
442     generate_cid_init (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     -- It's an anchored type
452     cr_info.generate_cid_init (buffer, final_mode, idx_cnt)
453 manus 39412 else
454     dummy := idx_cnt.next
455 manus 14013 end
456     end
457 manus 30169
458     feature -- Generic conformance for IL
459    
460     generate_gen_type_il (il_generator: IL_CODE_GENERATOR; use_info : BOOLEAN) is
461     -- `use_info' is true iff we generate code for a
462     -- creation instruction.
463     do
464     if use_info and then cr_info /= Void then
465 manus 30582 -- It's an anchored type, we call feature
466     -- that will tell us the real type of the
467     -- anchor in the context of Current.
468     cr_info.generate_il_type
469     else
470     il_generator.generate_class_type_instance (Current)
471 manus 30169 end
472     end
473    
474 manus 33952 feature {NONE} -- Implementation
475    
476 manus 43828 base_name: STRING is
477     -- String that should be displayed in debugger to represent `Current'.
478     local
479     l_base_class: like base_class
480     do
481     create Result.make (32)
482     l_base_class := base_class
483     if is_expanded and not l_base_class.is_expanded then
484     Result.append ("expanded ")
485     elseif is_separate then
486     Result.append ("separate ")
487     end
488     Result.append (l_base_class.name)
489     end
490    
491 manus 41824 frozen internal_il_type_name (a_base_name, a_prefix: STRING): STRING is
492 manus 33952 -- Full type name of `a_base_name' using `a_prefix' in IL code generation
493     -- with namespace specification
494     require
495     a_base_name_not_void: a_base_name /= Void
496     local
497     l_name: STRING
498 manus 41824 l_base_class: like base_class
499 manus 33952 do
500 manus 41824 l_base_class := base_class
501     -- Result needs to be in lower case because that's
502     -- what our casing conversion routines require to perform
503     -- a good job.
504     if
505     (is_expanded and l_base_class.is_expanded) or
506     (not is_expanded and not l_base_class.is_expanded)
507     then
508     Result := a_base_name.as_lower
509     else
510     if is_expanded then
511     create Result.make (6 + a_base_name.count)
512     Result.append ("VALUE_")
513     else
514     create Result.make (10 + a_base_name.count)
515     Result.append ("REFERENCE_")
516     end
517     Result.append (a_base_name)
518     Result.to_lower
519     end
520     l_name := l_base_class.lace_class.actual_namespace
521 manus 33952 if a_prefix /= Void then
522     if l_name.is_empty then
523     l_name := a_prefix + "."
524     else
525 manus 34253 l_name := il_casing.namespace_casing (System.dotnet_naming_convention,
526     l_name) + "." + a_prefix + "."
527 manus 33952 end
528     else
529     if not l_name.is_empty then
530 manus 34253 l_name := il_casing.namespace_casing (System.dotnet_naming_convention,
531     l_name) + "."
532 manus 33952 end
533     end
534 manus 34253 Result := l_name + il_casing.pascal_casing (System.dotnet_naming_convention,
535     Result, feature {IL_CASING_CONVERSION}.upper_case)
536 manus 33952 ensure
537     internal_il_type_name_not_void: Result /= Void
538     internal_il_type_name_not_empty: not Result.is_empty
539     end
540    
541 manus 41824 invariant
542     class_id_positive: class_id > 0
543    
544 grator 18 end

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