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Revision 48670 - (hide annotations)
Wed Feb 23 17:46:45 2005 UTC (15 years ago) by alexk
Original Path: trunk/Src/bench/Eiffel/eiffel/genericity/cl_type_i.e
File size: 12519 byte(s)
Added a postcondition to `associated_class_type'.
Reverted to original definition of `has_associated_class_type' as it is
correct given that all class types are registered as required.

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 alexk 48670 ensure
180     result_not_void: Result /= Void
181 manus 9655 end
182 grator 18
183     type_id: INTEGER is
184     -- Type id of the correponding class type
185     do
186 manus 9655 Result := associated_class_type.type_id
187     end
188 grator 18
189 manus 26913 sk_value: INTEGER is
190     -- Generate SK value associated to the current type.
191 grator 18 do
192 manus 41824 if is_expanded then
193     Result := Sk_exp | (type_id - 1)
194     else
195 manus 31263 Result := Sk_ref | (type_id - 1)
196 manus 9655 end
197     end
198 grator 18
199     hash_code: INTEGER is
200     -- Hash code for current type
201     do
202 manus 30293 Result := Other_code + class_id
203 manus 9655 end
204 grator 18
205 manus 26913 feature -- Status
206    
207 manus 31541 element_type: INTEGER_8 is
208     -- Void element type
209     do
210 manus 41824 if is_expanded then
211 manus 31541 Result := feature {MD_SIGNATURE_CONSTANTS}.Element_type_valuetype
212     else
213 manus 37130 if class_id = System.system_string_class.compiled_class.class_id then
214 manus 31541 Result := feature {MD_SIGNATURE_CONSTANTS}.Element_type_string
215 manus 44032 elseif class_id = System.system_object_id or class_id = system.any_id then
216     -- For ANY or SYSTEM_OBJECT, we always generate a System.Object
217     -- signature since we can now assign SYSTEM_OBJECTs into ANYs.
218 manus 31541 Result := feature {MD_SIGNATURE_CONSTANTS}.Element_type_object
219     else
220     Result := feature {MD_SIGNATURE_CONSTANTS}.Element_type_class
221     end
222     end
223     end
224    
225 manus 41824 tuple_code: INTEGER_8 is
226     -- Tuple code for class type
227     do
228     Result := feature {SHARED_GEN_CONF_LEVEL}.reference_tuple_code
229     end
230    
231     is_expanded: BOOLEAN
232 manus 26913 -- Is the type expanded?
233    
234     is_separate: BOOLEAN
235     -- Is the type separate?
236    
237     is_enum: BOOLEAN is
238     -- Is current type an IL enum type?
239     -- Useful to find out if some call optimization can be done
240     -- in FEATURE_B.
241     require
242     il_generation: System.il_generation
243 grator 18 do
244 manus 41824 Result := is_expanded and then base_class.is_enum
245 manus 26913 end
246    
247 manus 28380 is_external: BOOLEAN is
248 manus 41824 -- Is current type based on an external class?
249     local
250     l_base_class: like base_class
251 manus 28380 do
252 manus 41824 -- All Eiffel basic types are externals, and only basic types used
253     -- as reference are not external.
254     l_base_class := base_class
255     Result := is_basic or (not l_base_class.is_basic and l_base_class.is_external)
256 manus 28380 end
257 manus 41824
258     is_generated_as_single_type: BOOLEAN is
259     -- Is associated type generated as a single type or as an interface type and
260     -- an implementation type.
261     do
262 manus 44032 -- External classes have only one type.
263     Result := is_external
264 manus 41824 if not Result then
265 manus 44058 -- Classes that inherits from external classes
266 manus 44032 -- have only one generated type.
267     Result := base_class.is_single
268 manus 41824 end
269     end
270 manus 28380
271 manus 26913 is_valid: BOOLEAN is
272 manus 35544 -- Is the base class still in the system and matches its specification?
273 manus 41824 local
274     l_base_class: like base_class
275 manus 26913 do
276 manus 41824 l_base_class := base_class
277     Result := l_base_class /= Void and then (l_base_class.generics = Void)
278 manus 26913 end
279    
280     is_reference: BOOLEAN is
281     -- Is the type a reference type ?
282     do
283 manus 41824 Result := not is_expanded
284 manus 26913 end;
285    
286     is_explicit: BOOLEAN is
287 manus 39713 -- Is Current type fixed at compile time?
288 manus 26913 do
289 manus 39713 if cr_info /= Void then
290     Result := cr_info.is_explicit
291     else
292     Result := True
293     end
294 manus 26913 end
295    
296     has_associated_class_type: BOOLEAN is
297     -- Has `Current' an associated class type?
298     do
299 alexk 48670 Result := base_class.types.has_type (Current)
300 manus 9655 end
301 grator 18
302 manus 26913 same_as (other: TYPE_I): BOOLEAN is
303     -- Is `other' equal to Current ?
304     local
305     other_cl_type: CL_TYPE_I
306 grator 508 do
307 manus 26913 other_cl_type ?= other
308     Result := other_cl_type /= Void -- FIXME
309 manus 30293 and then other_cl_type.class_id = class_id
310 manus 41824 and then other_cl_type.is_expanded = is_expanded
311 manus 26913 and then other_cl_type.is_separate = is_separate
312     and then other_cl_type.meta_generic = Void
313     and then other_cl_type.true_generics = Void
314     end
315    
316     feature -- Setting
317    
318 manus 41824 set_is_expanded (b: BOOLEAN) is
319     -- Assign `b' to `is_expanded'.
320 manus 26913 do
321 manus 41824 is_expanded := b
322 manus 35178 ensure
323 manus 41824 is_expanded_set: is_expanded = b
324 manus 26913 end
325    
326     set_is_separate (b: BOOLEAN) is
327     -- Assign `b' to `is_separate'.
328     do
329     is_separate := b
330 manus 35178 ensure
331     is_separate_set: is_separate = b
332 manus 26913 end
333    
334     set_cr_info (cinfo : CREATE_INFO) is
335     -- Set `cr_info' to `cinfo'.
336 manus 30224 require
337     create_info_not_void: cinfo /= Void
338 manus 41824 not_expanded: not is_expanded
339 manus 26913 do
340     cr_info := cinfo
341     ensure
342     cr_info_set : cr_info = cinfo
343     end
344    
345     feature -- C generation
346    
347 manus 43364 generate_expanded_creation (buffer: GENERATION_BUFFER; target_name: STRING) is
348 manus 35665 -- Generate creation of expanded object associated to Current.
349     do
350 manus 43364 associated_class_type.generate_expanded_creation (buffer, target_name)
351     end
352 manus 35665
353 manus 43364 generate_expanded_initialization (buffer: GENERATION_BUFFER; target_name: STRING) is
354     -- Generate creation of expanded object associated to Current.
355     do
356     associated_class_type.generate_expanded_initialization (buffer, target_name, target_name, True)
357 manus 35665 end
358    
359 manus 26913 generate_cecil_value (buffer: GENERATION_BUFFER) is
360     -- Generate cecil value
361     do
362 manus 41824 if not is_expanded then
363 manus 43084 buffer.put_string ("SK_REF + (uint32) ")
364 grator 508 else
365 manus 43084 buffer.put_string ("SK_EXP + (uint32) ")
366 manus 9655 end
367 manus 43084 buffer.put_type_id (associated_class_type.type_id)
368 manus 9655 end
369 grator 508
370 grator 930 feature -- Array optimization
371    
372     conforms_to_array: BOOLEAN is
373     do
374     Result := base_class.conform_to (array_class_c)
375 manus 9655 end
376 grator 930
377     feature {NONE} -- Array optimization
378    
379     array_class_c: CLASS_C is
380     once
381     Result := System.array_class.compiled_class
382 manus 9655 end
383 grator 930
384 manus 10818 feature -- Generic conformance
385    
386     generated_id (final_mode : BOOLEAN) : INTEGER is
387 manus 11298
388 manus 10818 do
389 manus 11298 if final_mode then
390     Result := type_id - 1
391 manus 10818 else
392 manus 41824 Result := associated_class_type.static_type_id - 1
393 manus 10818 end
394     end
395    
396 manus 11599 generate_cid (buffer : GENERATION_BUFFER; final_mode, use_info : BOOLEAN) is
397 manus 11298
398 manus 10818 do
399 manus 11209 if
400     use_info and then (cr_info /= Void)
401 manus 26913 and then not is_expanded
402 manus 11209 then
403 manus 43156 -- It's an anchored type
404 manus 11599 cr_info.generate_cid (buffer, final_mode)
405 manus 39412 else
406 manus 43084 buffer.put_integer (generated_id (final_mode))
407 manus 43156 buffer.put_character (',')
408 manus 10890 end
409 manus 10818 end
410    
411 manus 10890 make_gen_type_byte_code (ba : BYTE_ARRAY; use_info : BOOLEAN) is
412 manus 10818 do
413 manus 11209 if
414     use_info and then (cr_info /= Void)
415 manus 26913 and then not is_expanded
416 manus 11209 then
417     -- It's an anchored type
418 manus 10890 cr_info.make_gen_type_byte_code (ba)
419 manus 39412 else
420     ba.append_short_integer (generated_id (False))
421 manus 10890 end
422 manus 10818 end
423    
424 manus 14013 generate_cid_array (buffer : GENERATION_BUFFER;
425     final_mode, use_info : BOOLEAN; idx_cnt : COUNTER) is
426     local
427     dummy : INTEGER
428     do
429     if
430     use_info and then (cr_info /= Void)
431 manus 26913 and then not is_expanded
432 manus 14013 then
433 manus 39412 -- It's an anchored type
434 manus 14013 cr_info.generate_cid_array (buffer, final_mode, idx_cnt)
435 manus 39412 else
436 manus 43084 buffer.put_integer (generated_id (final_mode))
437 manus 43156 buffer.put_character (',')
438 manus 39412
439     -- Increment counter
440     dummy := idx_cnt.next
441 manus 14013 end
442     end
443    
444     generate_cid_init (buffer : GENERATION_BUFFER;
445     final_mode, use_info : BOOLEAN; idx_cnt : COUNTER) is
446     local
447     dummy : INTEGER
448     do
449     if
450     use_info and then (cr_info /= Void)
451 manus 26913 and then not is_expanded
452 manus 14013 then
453     -- It's an anchored type
454     cr_info.generate_cid_init (buffer, final_mode, idx_cnt)
455 manus 39412 else
456     dummy := idx_cnt.next
457 manus 14013 end
458     end
459 manus 30169
460     feature -- Generic conformance for IL
461    
462     generate_gen_type_il (il_generator: IL_CODE_GENERATOR; use_info : BOOLEAN) is
463     -- `use_info' is true iff we generate code for a
464     -- creation instruction.
465     do
466     if use_info and then cr_info /= Void then
467 manus 30582 -- It's an anchored type, we call feature
468     -- that will tell us the real type of the
469     -- anchor in the context of Current.
470     cr_info.generate_il_type
471     else
472     il_generator.generate_class_type_instance (Current)
473 manus 30169 end
474     end
475    
476 manus 33952 feature {NONE} -- Implementation
477    
478 manus 43828 base_name: STRING is
479     -- String that should be displayed in debugger to represent `Current'.
480     local
481     l_base_class: like base_class
482     do
483     create Result.make (32)
484     l_base_class := base_class
485     if is_expanded and not l_base_class.is_expanded then
486     Result.append ("expanded ")
487     elseif is_separate then
488     Result.append ("separate ")
489     end
490     Result.append (l_base_class.name)
491     end
492    
493 manus 41824 frozen internal_il_type_name (a_base_name, a_prefix: STRING): STRING is
494 manus 33952 -- Full type name of `a_base_name' using `a_prefix' in IL code generation
495     -- with namespace specification
496     require
497     a_base_name_not_void: a_base_name /= Void
498     local
499 manus 41824 l_base_class: like base_class
500 manus 33952 do
501 manus 41824 l_base_class := base_class
502     -- Result needs to be in lower case because that's
503     -- what our casing conversion routines require to perform
504     -- a good job.
505 alexk 46609 if is_expanded and then not l_base_class.is_expanded then
506     create Result.make (6 + a_base_name.count)
507     Result.append ("value_")
508     elseif not is_expanded and then l_base_class.is_expanded then
509     create Result.make (10 + a_base_name.count)
510     Result.append ("reference_")
511 manus 41824 else
512 alexk 46609 create Result.make (a_base_name.count)
513 manus 41824 end
514 alexk 46609 Result.append (a_base_name)
515     Result.to_lower
516     Result := il_casing.type_name (l_base_class.lace_class.actual_namespace, a_prefix, Result, System.dotnet_naming_convention)
517 manus 33952 ensure
518     internal_il_type_name_not_void: Result /= Void
519     internal_il_type_name_not_empty: not Result.is_empty
520     end
521    
522 manus 41824 invariant
523     class_id_positive: class_id > 0
524    
525 grator 18 end

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