generics1.icl 266 KB
Newer Older
1
2
3
4
5
6
//**************************************************************************************
// Generic programming features 
//**************************************************************************************

implementation module generics1

7
import StdEnv,compare_types
8
import check
9
from checktypes import createMoreClassDictionaries
10
11
12
13
14
15
16
17
18
from transform import ::Group
import genericsupport

// Data types

:: FunDefs :== {#FunDef}
:: Modules :== {#CommonDefs}
:: DclModules :== {#DclModule}
:: Groups :== {!Group}
19
:: *DclMacros :== *{#*{#FunDef}}
20
21
22
23
24

:: FunsAndGroups= ! {
		fg_fun_index :: !Index,
		fg_group_index :: !Index,
		fg_funs :: ![FunDef],
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
		fg_groups :: ![Group],
		fg_bimap_functions :: !BimapFunctions
	}

:: BimapFunctions = {
		bimap_id_function :: !FunctionIndexAndIdent,
		bimap_fromto_function :: !FunctionIndexAndIdent,
		bimap_tofrom_function :: !FunctionIndexAndIdent,
		bimap_to_function :: !FunctionIndexAndIdent,
		bimap_from_function :: !FunctionIndexAndIdent,
		bimap_arrow_function :: !FunctionIndexAndIdent,
		bimap_arrow_arg_id_function :: !FunctionIndexAndIdent,
		bimap_arrow_res_id_function :: !FunctionIndexAndIdent,
		bimap_from_Bimap_function :: !FunctionIndexAndIdent,
		bimap_PAIR_function :: !FunctionIndexAndIdent,
		bimap_EITHER_function :: !FunctionIndexAndIdent,
		bimap_OBJECT_function :: !FunctionIndexAndIdent,
		bimap_CONS_function :: !FunctionIndexAndIdent,
43
		bimap_RECORD_function :: !FunctionIndexAndIdent,
44
45
46
47
48
49
		bimap_FIELD_function :: !FunctionIndexAndIdent
	}

:: FunctionIndexAndIdent = {	
		fii_index :: !Index,
		fii_ident :: Ident
50
	}
51

52
:: PredefinedSymbolsData = !{psd_predefs_a :: !{#PredefinedSymbol}}
53

54
55
56
57
58
59
60
61
62
63
64
65
66
67
:: *GenericState = 
	{ gs_modules :: !*Modules
	, gs_exprh :: !*ExpressionHeap
	, gs_genh :: !*GenericHeap
	, gs_varh :: !*VarHeap
	, gs_tvarh :: !*TypeVarHeap
	, gs_avarh :: !*AttrVarHeap 
	, gs_error :: !*ErrorAdmin
	, gs_symtab :: !*SymbolTable
	, gs_dcl_modules :: !*DclModules
	, gs_td_infos :: !*TypeDefInfos
	, gs_funs :: !*{#FunDef}
	, gs_groups :: {!Group}
	// non-unique, read only
68
	, gs_predefs :: !PredefinedSymbolsData
69
70
71
72
	, gs_main_module :: !Index
	, gs_used_modules :: !NumberSet
	}

73
74
75
76
77
78
79
80
81
82
83
84
85
// Exported functions

convertGenerics :: 
		!Int 					// index of the main dcl module
		!NumberSet				// set of used modules
		!{#CommonDefs} 			// common definitions of all modules
		!{!Group} 				// groups of functions
		!*{# FunDef} 			// functions
		!*TypeDefInfos 			// type definition information of all modules
		!*Heaps 				// all heaps
		!*HashTable 			// needed for what creating class dictionaries
		!*PredefinedSymbols 	// predefined symbols
		!u:{# DclModule}		// dcl modules
86
		!*{#*{#FunDef}}			// dcl macros
87
88
89
90
91
92
93
94
95
		!*ErrorAdmin 			// to report errors
	->  ( !{#CommonDefs}		// common definitions of all modules
		, !{!Group}				// groups of functions
		, !*{# FunDef}			// function definitions
		, !*TypeDefInfos		// type definition infos
		, !*Heaps				// all heaps
		, !*HashTable			// needed for creating class dictinaries
		, !*PredefinedSymbols	// predefined symbols	
		, !u:{# DclModule}		// dcl modules
96
		, !*{#*{#FunDef}}		// dcl macros
97
98
		, !*ErrorAdmin			// to report errors
		)
99
convertGenerics main_dcl_module_n used_module_numbers modules groups funs td_infos heaps hash_table u_predefs dcl_modules dcl_macros error
100
101
102
103
104
105
	#! modules = {x \\ x <-: modules} 			// unique copy
	#! dcl_modules = { x \\ x <-: dcl_modules } 	// unique copy
	#! size_predefs = size u_predefs
	#! (predefs, u_predefs) = arrayCopyBegin u_predefs size_predefs // non-unique copy

	#! td_infos = clearTypeDefInfos td_infos
106
107
108
109
110
111
112
113
114
115
116
117
118
	#! (modules, heaps) = clearGenericDefs modules heaps

	# {hp_var_heap, hp_generic_heap, hp_type_heaps={th_vars, th_attrs}, hp_expression_heap} = heaps
	# gs = 
		{ gs_modules = modules
		, gs_symtab = hash_table.hte_symbol_heap
		, gs_dcl_modules = dcl_modules
		, gs_td_infos = td_infos
		, gs_exprh = hp_expression_heap	
		, gs_genh = hp_generic_heap	
		, gs_varh = hp_var_heap
		, gs_tvarh = th_vars
		, gs_avarh = th_attrs
119
		, gs_error = error
120
		, gs_funs = funs
121
122
		, gs_groups = groups
		, gs_predefs = {psd_predefs_a=predefs}
123
124
125
126
		, gs_main_module = main_dcl_module_n
		, gs_used_modules = used_module_numbers
		} 

127
	# (dcl_macros, gs) = convert_generics dcl_macros gs
128
129
130
131
132
133
134
135
136
137
138
139

	#	{ 	gs_modules = modules, gs_symtab, gs_dcl_modules = dcl_modules, gs_td_infos = td_infos, 
			gs_genh = hp_generic_heap, gs_varh = hp_var_heap, gs_tvarh = th_vars, gs_avarh = th_attrs, 
			gs_exprh = hp_expression_heap,	
			gs_error = error, gs_funs = funs, gs_groups = groups,
			gs_predefs = predefs, gs_main_module = main_dcl_module_n, gs_used_modules = used_module_numbers} = gs
	#! hash_table = { hash_table & hte_symbol_heap = gs_symtab }
	#! heaps = 
		{ hp_expression_heap = hp_expression_heap
		, hp_var_heap = hp_var_heap
		, hp_generic_heap = hp_generic_heap
		, hp_type_heaps = { th_vars = th_vars, th_attrs = th_attrs }
140
		}
141
	= (modules, groups, funs, td_infos, heaps, hash_table, u_predefs, dcl_modules, dcl_macros, error)
142
where
143
144
145
146
	convert_generics :: !*DclMacros !*GenericState -> (!*DclMacros, !*GenericState)
	convert_generics dcl_macros gs
		# (bimap_functions, gs) = buildGenericRepresentations gs
		| not gs.gs_error.ea_ok = (dcl_macros, gs)
147

148
		# gs = buildClasses gs
149
		| not gs.gs_error.ea_ok = (dcl_macros, gs)
150

151
152
		# (dcl_macros, gs) = convertGenericCases bimap_functions dcl_macros gs
		| not gs.gs_error.ea_ok = (dcl_macros, gs)
153
154
155

		#! gs = convertGenericTypeContexts gs

156
		= (dcl_macros, gs)
157

158
159
160
// clear stuff that might have been left over
// from compilation of other icl modules

161
clearTypeDefInfos :: !*{#*{#TypeDefInfo}} -> *{#*{#TypeDefInfo}}
162
163
164
165
166
167
clearTypeDefInfos td_infos
	= clear_modules 0 td_infos
where
	clear_modules n td_infos
		| n == size td_infos
			= td_infos
168
			#! (td_infos1, td_infos) = td_infos![n]
169
			#! td_infos1 = clear_td_infos 0 td_infos1
170
			#! td_infos = {td_infos & [n]=td_infos1}
171
172
173
174
175
176
177
178
179
			= clear_modules (inc n) td_infos 
			
	clear_td_infos n td_infos 			
		| n == size td_infos
			= td_infos
			#! (td_info, td_infos) = td_infos![n]
			#! td_infos = {td_infos & [n] = {td_info & tdi_gen_rep = No}}
			= clear_td_infos (inc n) td_infos 

180
clearGenericDefs :: !*{#CommonDefs} !*Heaps -> (!*{#CommonDefs},!*Heaps)
181
182
clearGenericDefs modules heaps
	= clear_module 0 modules  heaps
183
184
185
where
	initial_gen_classes
		= createArray 32 []
186
187
188
189
190
	initial_gen_rep_conses
		= createArray 7 {grc_module = -1, grc_index = GCB_None, grc_local_fun_index = -1, grc_generic_info = -1,
						 grc_generic_instance_deps = AllGenericInstanceDependencies,
						 grc_ident={id_name="",id_info=nilPtr},
						 grc_optional_fun_type=No}
191

192
193
194
195
196
197
198
	clear_module n modules heaps
		| n == size modules
			= (modules, heaps)
			#! ({com_generic_defs}, modules) = modules![n]
			#! (com_generic_defs, heaps) = updateArraySt clear_generic_def {x\\x<-:com_generic_defs} heaps 			
			#! modules = {modules & [n].com_generic_defs = com_generic_defs}
			= clear_module (inc n) modules heaps
199

200
	clear_generic_def generic_def=:{gen_info_ptr} heaps=:{hp_generic_heap}
201
		#! (gen_info, hp_generic_heap) = readPtr gen_info_ptr hp_generic_heap
202
		# gen_info & gen_classes = initial_gen_classes, gen_rep_conses = initial_gen_rep_conses
203
204
205
206
207
208
209
		#! hp_generic_heap = writePtr gen_info_ptr gen_info hp_generic_heap
		= (generic_def, {heaps & hp_generic_heap = hp_generic_heap})
		
//	generic type representation

// generic representation is built for each type argument of
// generic cases of the current module
210
buildGenericRepresentations :: !*GenericState -> (!BimapFunctions,!*GenericState)
211
212
213
buildGenericRepresentations gs=:{gs_main_module, gs_modules, gs_funs, gs_groups}
	#! (size_funs, gs_funs) = usize gs_funs
	#! size_groups = size gs_groups
214
	#! ({com_gencase_defs}, gs_modules) = gs_modules![gs_main_module]
215
	
216
	#! gs = { gs & gs_modules = gs_modules, gs_funs = gs_funs, gs_groups = gs_groups }
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
	
	# undefined_function_and_ident = {fii_index = -1,fii_ident = undef}
	  bimap_functions = {
				bimap_id_function = undefined_function_and_ident,
				bimap_fromto_function = undefined_function_and_ident,
				bimap_tofrom_function = undefined_function_and_ident,
				bimap_to_function = undefined_function_and_ident,
				bimap_from_function = undefined_function_and_ident,
		  		bimap_arrow_function = undefined_function_and_ident,
		  		bimap_arrow_arg_id_function = undefined_function_and_ident,
		  		bimap_arrow_res_id_function = undefined_function_and_ident,
		  		bimap_from_Bimap_function = undefined_function_and_ident,
		  		bimap_PAIR_function = undefined_function_and_ident,
		  		bimap_EITHER_function = undefined_function_and_ident,
		  		bimap_OBJECT_function = undefined_function_and_ident,
		  		bimap_CONS_function = undefined_function_and_ident,
233
		  		bimap_RECORD_function = undefined_function_and_ident,
234
235
		  		bimap_FIELD_function = undefined_function_and_ident
	  		}
236
	  funs_and_groups = {fg_fun_index=size_funs, fg_group_index=size_groups, fg_funs=[], fg_groups=[],fg_bimap_functions=bimap_functions}
237
	#! (funs_and_groups, gs)
238
		= foldArraySt build_generic_representation com_gencase_defs (funs_and_groups, gs)
239

240
	# {fg_funs=new_funs,fg_groups=new_groups,fg_bimap_functions} = funs_and_groups 
241
242
243
	# {gs_funs, gs_groups} = gs
	#! gs_funs = arrayPlusRevList gs_funs new_funs
	#! gs_groups = arrayPlusRevList gs_groups new_groups
244

245
	= (fg_bimap_functions, {gs & gs_funs = gs_funs, gs_groups = gs_groups})
246
where
247
	build_generic_representation
248
			{gc_type_cons=TypeConsSymb {type_index={glob_module,glob_object}, type_ident},gc_gcf,gc_pos} 
249
250
251
			(funs_and_groups, gs)
		# (type_def,gs) = gs!gs_modules.[glob_module].com_type_defs.[glob_object]
		# (td_info, gs) = gs!gs_td_infos.[glob_module,glob_object]
252
253
254
255
256
257
258
259
		= case gc_gcf of
			GCF gc_ident {gcf_body=GCB_FunIndex fun_index}
				-> case gs.gs_funs.[fun_index].fun_body of
					TransformedBody _ 
						// does not need a generic representation
						-> (funs_and_groups, gs)
					GeneratedBody	
						// needs a generic representation
260
261
262
263
264
265
266
267
268
						-> build_generic_type_rep type_def.td_rhs type_def.td_ident glob_module glob_object td_info gc_ident.id_name gc_pos funs_and_groups gs
			GCFS gcfs
				-> build_generic_type_rep type_def.td_rhs type_def.td_ident glob_module glob_object td_info "derive generic superclass" gc_pos funs_and_groups gs
	build_generic_representation _ st
		= st

	build_generic_type_rep td_rhs type_def_ident glob_module glob_object td_info g_ident_name gc_pos funs_and_groups gs
		= case td_rhs of
			SynType _
269
270
				#  gs_error = report_derive_error g_ident_name gc_pos "a synonym type " type_def_ident.id_name gs.gs_error
				-> (funs_and_groups, {gs & gs_error = gs_error})
271
			AbstractType _
272
273
274
275
276
277
278
279
				#  gs_error = report_derive_error g_ident_name gc_pos "an abstract type " type_def_ident.id_name gs.gs_error
				-> (funs_and_groups, {gs & gs_error = gs_error})
			ExtensibleAlgType _
				#  gs_error = report_derive_error g_ident_name gc_pos "an extensible algebraic type " type_def_ident.id_name gs.gs_error
				-> (funs_and_groups, {gs & gs_error = gs_error})
			AlgConses _ _
				#  gs_error = report_derive_error g_ident_name gc_pos "an extensible algebraic type " type_def_ident.id_name gs.gs_error
				-> (funs_and_groups, {gs & gs_error = gs_error})
280
281
282
283
284
285
286
287
288
289
290
			_
				-> case td_info.tdi_gen_rep of
					Yes _
						-> (funs_and_groups, gs)	// generic representation already built
					No
						# type_def_gi = {gi_module=glob_module,gi_index=glob_object}
						# (gen_type_rep, funs_and_groups, gs)
							= buildGenericTypeRep type_def_gi funs_and_groups gs
						# td_info = {td_info & tdi_gen_rep = Yes gen_type_rep}
						# gs = {gs & gs_td_infos.[glob_module,glob_object] = td_info}
						-> (funs_and_groups, gs)
291

292
293
294
	report_derive_error g_ident_name gc_pos kind_of_type_string type_def_ident_name gs_error
		= reportError g_ident_name gc_pos ("cannot derive a generic instance for "+++kind_of_type_string+++type_def_ident_name) gs_error

295
:: TypeInfos
296
297
	= AlgebraicInfo !DefinedSymbol !DefinedSymbol ![DefinedSymbol] ![DefinedSymbol]
	| RecordInfo !DefinedSymbol !DefinedSymbol !DefinedSymbol ![DefinedSymbol]
298

299
buildGenericTypeRep :: !GlobalIndex /*type def index*/ !FunsAndGroups !*GenericState ->	(!GenericTypeRep,!FunsAndGroups,!*GenericState)
300
buildGenericTypeRep type_index funs_and_groups
301
		gs=:{gs_modules, gs_predefs, gs_main_module, gs_error, gs_td_infos, gs_exprh, gs_varh, gs_genh, gs_avarh, gs_tvarh}
302
303
304
305
306
	# heaps = 
		{ hp_expression_heap = gs_exprh
		, hp_var_heap = gs_varh
		, hp_generic_heap = gs_genh
		, hp_type_heaps = { th_vars = gs_tvarh, th_attrs = gs_avarh }
John van Groningen's avatar
John van Groningen committed
307
308
		}

309
310
	# (type_def, gs_modules) = gs_modules![type_index.gi_module].com_type_defs.[type_index.gi_index]

311
312
	# (type_infos, funs_and_groups, gs_modules, heaps, gs_error)
		= buildTypeDefInfo type_def type_index.gi_module gs_main_module gs_predefs funs_and_groups gs_modules heaps gs_error
313

Artem Alimarine's avatar
Artem Alimarine committed
314
	# (atype, (gs_modules, gs_td_infos, heaps, gs_error)) 
315
		= buildStructType type_index type_infos gs_predefs (gs_modules, gs_td_infos, heaps, gs_error)
316
317
318
319
320
321
322
323
324
325
326
	
	# (from_fun_ds, funs_and_groups, heaps, gs_error)
		= buildConversionFrom type_index.gi_module type_def gs_main_module gs_predefs funs_and_groups heaps gs_error

	# (to_fun_ds, funs_and_groups, heaps, gs_error)
		= buildConversionTo type_index.gi_module type_def gs_main_module gs_predefs funs_and_groups heaps gs_error

	# (iso_fun_ds, funs_and_groups, heaps, gs_error)
		= buildConversionIso type_def from_fun_ds to_fun_ds gs_main_module gs_predefs funs_and_groups heaps gs_error

	# {hp_expression_heap, hp_var_heap, hp_generic_heap, hp_type_heaps={th_vars, th_attrs}} = heaps
327
328
329
330
331
332
333
334
335
	# gs = {gs	& gs_modules = gs_modules
				, gs_td_infos = gs_td_infos
				, gs_error = gs_error
				, gs_avarh = th_attrs
				, gs_tvarh = th_vars
				, gs_varh = hp_var_heap
				, gs_genh = hp_generic_heap
				, gs_exprh = hp_expression_heap
		   }
336
	= ({gtr_type=atype,gtr_iso=iso_fun_ds,gtr_to=to_fun_ds,gtr_from=from_fun_ds}, funs_and_groups, gs)
337
338
339
	
//	the structure type

340
341
convertATypeToGenTypeStruct :: !Ident !Position !PredefinedSymbolsData !AType (!*Modules, !*TypeDefInfos, !*Heaps, !*ErrorAdmin) 
														   -> (GenTypeStruct, (!*Modules, !*TypeDefInfos, !*Heaps, !*ErrorAdmin))
342
convertATypeToGenTypeStruct ident pos {psd_predefs_a} type st
343
	= convert type st
344
where	
Artem Alimarine's avatar
Artem Alimarine committed
345
346
347
348
	convert {at_type=TA type_symb args, at_attribute} st
		= convert_type_app type_symb at_attribute args st
	convert {at_type=TAS type_symb args _, at_attribute} st
		= convert_type_app type_symb at_attribute args st
349
350
	convert {at_type=(CV tv) :@: args} st
		#! (args, st) = mapSt convert args st
351
		= (GTSAppVar tv args, st)
352
353
354
	convert {at_type=x --> y} st
		#! (x, st) = convert x st
		#! (y, st) = convert y st
355
		= (GTSArrow x y, st)
356
357
358
359
	convert {at_type=TV tv} st
		= (GTSVar tv, st)  
	convert {at_type=TB _} st
		= (GTSAppCons KindConst [], st)  
360
	convert {at_type=type} (modules, td_infos, heaps, error)
361
		# error = reportError ident.id_name pos ("can not build generic representation for this type", type) error
Artem Alimarine's avatar
Artem Alimarine committed
362
363
364
365
366
367
368
369
370
		= (GTSE, (modules, td_infos, heaps, error))

	convert_type_app {type_index} attr args (modules, td_infos, heaps, error)	
		# (type_def, modules) = modules![type_index.glob_module].com_type_defs.[type_index.glob_object]
		= case type_def.td_rhs of 
			SynType atype
				# (expanded_type, th) = expandSynonymType type_def attr args heaps.hp_type_heaps 
				-> convert {at_type = expanded_type, at_attribute = attr} 
					(modules, td_infos, {heaps & hp_type_heaps = th}, error) 
371
			_
372
				#! {pds_module, pds_def} = psd_predefs_a.[PD_UnboxedArrayType]
373
374
375
376
				| 	type_index.glob_module == pds_module
					&& type_index.glob_object == pds_def
					&& (case args of [{at_type=TB _}] -> True; _ -> False)
					-> (GTSAppCons KindConst [], (modules, td_infos, heaps, error))
377
				| otherwise
378
379
380
381
					#! ({tdi_kinds}, td_infos) = td_infos ! [type_index.glob_module,type_index.glob_object]
					#! kind = if (isEmpty tdi_kinds) KindConst (KindArrow tdi_kinds)
					#! (args, st) = mapSt  convert args (modules, td_infos, heaps, error)
					-> (GTSAppCons kind args, st)  
Artem Alimarine's avatar
Artem Alimarine committed
382

383
384
convert_bimap_AType_to_GenTypeStruct :: !AType !Position !PredefinedSymbolsData (!*Modules, !*TypeDefInfos, !*Heaps, !*ErrorAdmin) 
															 -> (GenTypeStruct, (!*Modules, !*TypeDefInfos, !*Heaps, !*ErrorAdmin))
385
convert_bimap_AType_to_GenTypeStruct type pos {psd_predefs_a} st
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
	= convert type st
where
	convert {at_type=TA type_symb args, at_attribute} st
		= convert_type_app type_symb at_attribute args st
	convert {at_type=TAS type_symb args _, at_attribute} st
		= convert_type_app type_symb at_attribute args st
	convert {at_type=(CV tv) :@: args} st
		#! (args, st) = mapSt convert args st
		= (GTSAppVar tv args, st)
	convert {at_type=x --> y} st
		#! (x, st) = convert x st
		#! (y, st) = convert y st
		= (GTSArrow x y, st)  
	convert {at_type=TV tv} st
		= (GTSVar tv, st)  
	convert {at_type=TB _} st
		= (GTSAppCons KindConst [], st)  
	convert {at_type=type} (modules, td_infos, heaps, error)
404
		# error = reportError predefined_idents.[PD_GenericBimap].id_name pos ("can not build generic representation for this type", type) error
405
406
		= (GTSE, (modules, td_infos, heaps, error))

407
408
	convert_type_app {type_index=type_index=:{glob_module,glob_object},type_arity} attr args (modules, td_infos, heaps, error)
		# (type_def, modules) = modules![glob_module].com_type_defs.[glob_object]
409
410
		= case type_def.td_rhs of 
			SynType atype
411
				# (expanded_type, th) = expandSynonymType type_def attr args heaps.hp_type_heaps
412
413
				-> convert {at_type = expanded_type, at_attribute = attr} 
					(modules, td_infos, {heaps & hp_type_heaps = th}, error) 
414
			AbstractType _
415
				#! {pds_module, pds_def} = psd_predefs_a.[PD_UnboxedArrayType]
416
				| glob_module == pds_module && glob_object == pds_def
417
418
					&& (case args of [{at_type=TB _}] -> True; _ -> False)
					-> (GTSAppCons KindConst [], (modules, td_infos, heaps, error))
419
			RecordType _
420
				# {pds_module, pds_def} = psd_predefs_a.[PD_TypeBimap]
421
				| glob_module == pds_module && glob_object == pds_def
422
					&& case args of [_,_] -> True; _ -> False
423
					#! (tdi_kinds,td_infos) = td_infos![glob_module,glob_object].tdi_kinds
424
					#! kind = if (isEmpty tdi_kinds) KindConst (KindArrow tdi_kinds)
425
					#! (args, st) = convert_args args (modules, td_infos, heaps, error)
426
					-> (GTSAppBimap kind args, st)
427
428
429
430
431
432
433
434
			AlgType alts
				# n_args = length args
				| n_args>0 && type_arity==n_args
					# (can_generate_bimap_to_or_from,modules,heaps)
						= can_generate_bimap_to_or_from_for_this_type type_def glob_module alts modules heaps
					| can_generate_bimap_to_or_from
						#! (tdi_kinds,td_infos) = td_infos![glob_module,glob_object].tdi_kinds			
						#! (args, st) = convert_args args (modules, td_infos, heaps, error)
435
						-> (GTSAppConsSimpleType {gi_module=type_index.glob_module,gi_index=type_index.glob_object} (KindArrow tdi_kinds) args, st)
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
						-> 	convert_type_app_to_GTSAppCons glob_module glob_object args modules td_infos heaps error
			_
				-> 	convert_type_app_to_GTSAppCons glob_module glob_object args modules td_infos heaps error
	where
		convert_type_app_to_GTSAppCons glob_module glob_object args modules td_infos heaps error
			#! (tdi_kinds,td_infos) = td_infos![glob_module,glob_object].tdi_kinds
			#! kind = if (isEmpty tdi_kinds) KindConst (KindArrow tdi_kinds)
			#! (args, st) = convert_args args (modules, td_infos, heaps, error)
			= (GTSAppCons kind args, st)

	can_generate_bimap_to_or_from_for_this_type :: !CheckedTypeDef !Index ![DefinedSymbol] !*Modules !*Heaps -> (!Bool,!*Modules,!*Heaps)
	can_generate_bimap_to_or_from_for_this_type type_def=:{td_args} type_def_module_n alts modules heaps=:{hp_type_heaps}
		# th_vars = number_type_arguments td_args 0 hp_type_heaps.th_vars
		#! ok = check_constructors alts type_def_module_n modules th_vars
		# th_vars = remove_type_argument_numbers td_args th_vars
		# heaps = {heaps & hp_type_heaps={hp_type_heaps & th_vars=th_vars}}
		= (ok,modules,heaps)
	where
		check_constructors :: ![DefinedSymbol] !Index !Modules !TypeVarHeap -> Bool
		check_constructors [{ds_index}:constructors] type_def_module_n modules th_vars
			# {cons_type,cons_exi_vars} = modules.[type_def_module_n].com_cons_defs.[ds_index]
			= isEmpty cons_exi_vars &&
			  isEmpty cons_type.st_context &&
			  check_constructor cons_type.st_args 0 th_vars &&
			  check_constructors constructors type_def_module_n modules th_vars
		check_constructors [] type_def_module_n modules th_vars
			= True

		check_constructor :: ![AType] !Int !TypeVarHeap -> Bool
		check_constructor [{at_type=TV {tv_info_ptr}}:atypes] used_type_vars th_vars
			= case sreadPtr tv_info_ptr th_vars of
				TVI_GenTypeVarNumber arg_n
					# arg_mask = 1<<arg_n
					| used_type_vars bitand arg_mask<>0
						-> False
						# used_type_vars = used_type_vars bitor arg_mask
						-> check_constructor atypes used_type_vars th_vars
		check_constructor [_:_] used_type_vars th_vars
			= False
		check_constructor [] used_type_vars th_vars
			= True

	convert_args args st
		= mapSt convert args st
480
481

// the structure type of a generic type can often be simplified
Artem Alimarine's avatar
Artem Alimarine committed
482
// because bimaps for types not containing generic variables are indentity bimaps
483
484
simplify_bimap_GenTypeStruct :: ![TypeVar] !GenTypeStruct !*Heaps -> (!GenTypeStruct, !*Heaps)
simplify_bimap_GenTypeStruct gvars type heaps=:{hp_type_heaps=hp_type_heaps=:{th_vars}} 
485
486
487
488
	#! th_vars = foldSt mark_type_var gvars th_vars
	#! (type, th_vars) = simplify type th_vars
	#! th_vars = foldSt clear_type_var gvars th_vars 
	= (type, { heaps & hp_type_heaps = { hp_type_heaps & th_vars = th_vars}})
Artem Alimarine's avatar
Artem Alimarine committed
489
490
491
492
493
494
where
	simplify t=:(GTSAppCons KindConst [])  st
		= (t, st)
	simplify (GTSAppCons kind=:(KindArrow kinds) args) st
		# formal_arity = length kinds
		# actual_arity = length args
495
496
497
498
499
		# contains_gen_vars = occurs_list args st
		| formal_arity == actual_arity && not contains_gen_vars
			= (GTSAppConsBimapKindConst, st)
			# (args, st) = mapSt simplify args st
			= (GTSAppCons kind args, st)
500
501
502
503
504
505
	simplify (GTSAppConsSimpleType type_symbol_n kind args) st
		# contains_gen_vars = occurs_list args st
		| not contains_gen_vars
			= (GTSAppConsBimapKindConst, st)
			# (args, st) = mapSt simplify args st
			= (GTSAppConsSimpleType type_symbol_n kind args, st)
506
507
508
509
510
511
	simplify t=:(GTSAppBimap KindConst [])  st
		= (t, st)
	simplify (GTSAppBimap kind=:(KindArrow kinds) args) st
		# formal_arity = length kinds
		# actual_arity = length args
		# contains_gen_vars = occurs_list args st
Artem Alimarine's avatar
Artem Alimarine committed
512
		| formal_arity == actual_arity && not contains_gen_vars
513
			= (GTSAppConsBimapKindConst, st)
Artem Alimarine's avatar
Artem Alimarine committed
514
			# (args, st) = mapSt simplify args st
515
			= (GTSAppBimap kind args, st)
Artem Alimarine's avatar
Artem Alimarine committed
516
	simplify (GTSArrow x y) st
517
518
519
520
521
522
		# contains_gen_vars = occurs2 x y st
		| not contains_gen_vars
			= (GTSAppConsBimapKindConst, st)
			# (x, st) = simplify x st
			# (y, st) = simplify y st
			= (GTSArrow x y, st)
Artem Alimarine's avatar
Artem Alimarine committed
523
524
525
526
527
	simplify (GTSAppVar tv args) st
		# (args, st) = mapSt simplify args st
		= (GTSAppVar tv args, st)	
	simplify t=:(GTSVar tv) st
		= (t, st)
528
529
530
531
532
533
534
535
	simplify (GTSPair x y) st
		# (x, st) = simplify x st
		# (y, st) = simplify y st
		= (GTSPair x y, st)
	simplify (GTSEither x y) st
		# (x, st) = simplify x st
		# (y, st) = simplify y st
		= (GTSEither x y, st)
536
	simplify (GTSCons cons_info_ds cons_index type_info gen_type_ds x) st
537
		# (x, st) = simplify x st
538
539
		= (GTSCons cons_info_ds cons_index type_info gen_type_ds x, st)
	simplify (GTSRecord cons_info_ds type_index gen_type_ds field_list_ds x) st
540
		# (x, st) = simplify x st
541
542
		= (GTSRecord cons_info_ds type_index gen_type_ds field_list_ds x, st)
	simplify (GTSField field_info_ds field_index record_info_ds x) st
543
		# (x, st) = simplify x st
544
545
		= (GTSField field_info_ds field_index record_info_ds x, st)
	simplify (GTSObject type_info_ds type_index cons_desc_list_ds x) st
546
		# (x, st) = simplify x st
547
548
549
550
		= (GTSObject type_info_ds type_index cons_desc_list_ds x, st)
	simplify GTSUnit st
		= (GTSUnit, st)

Artem Alimarine's avatar
Artem Alimarine committed
551
	occurs (GTSAppCons _ args) st 	= occurs_list args st
552
	occurs (GTSAppConsSimpleType _ _ args) st 	= occurs_list args st
553
	occurs (GTSAppBimap _ args) st 	= occurs_list args st
554
	occurs (GTSAppVar tv args) st 	= type_var_occurs tv st || occurs_list args st		
Artem Alimarine's avatar
Artem Alimarine committed
555
	occurs (GTSVar tv) st			= type_var_occurs tv st
556
557
558
	occurs (GTSArrow x y) st 		= occurs2 x y st
	occurs (GTSPair x y) st			= occurs2 x y st
	occurs (GTSEither x y) st		= occurs2 x y st
559
560
561
562
563
	occurs (GTSCons _ _ _ _ arg) st = occurs arg st
	occurs (GTSRecord _ _ _ _ arg) st = occurs arg st
	occurs (GTSField _ _ _ arg) st	= occurs arg st	
	occurs (GTSObject _ _ _ arg) st	= occurs arg st	
	occurs GTSUnit st				= False
564
	occurs GTSE st 					= False
Artem Alimarine's avatar
Artem Alimarine committed
565

566
567
568
569
570
	occurs2 x y st
		= occurs x st || occurs y st

	occurs_list [] st
		= False
Artem Alimarine's avatar
Artem Alimarine committed
571
	occurs_list [x:xs] st 
572
		= occurs x st || occurs_list xs st
Artem Alimarine's avatar
Artem Alimarine committed
573
574

	type_var_occurs tv th_vars
575
576
577
		= case sreadPtr tv.tv_info_ptr th_vars of
			TVI_Empty = False
			TVI_Used = True
Artem Alimarine's avatar
Artem Alimarine committed
578
579
580
581
582
583

	mark_type_var tv=:{tv_info_ptr} th_vars 
		# (tv_info, th_vars) = readPtr tv_info_ptr th_vars
		= case tv_info of
			TVI_Empty = writePtr tv_info_ptr TVI_Used th_vars 
			_ = abort "type var is not empty"
584

Artem Alimarine's avatar
Artem Alimarine committed
585
586
	clear_type_var {tv_info_ptr} th_vars
		= writePtr tv_info_ptr TVI_Empty th_vars 
587
588

buildStructType ::
Artem Alimarine's avatar
Artem Alimarine committed
589
		!GlobalIndex				// type def global index
590
		!TypeInfos					// type, constructor and field info symbols
591
		!PredefinedSymbolsData
Artem Alimarine's avatar
Artem Alimarine committed
592
		(!*Modules, !*TypeDefInfos, !*Heaps, !*ErrorAdmin)
593
	-> 	( !GenTypeStruct			// the structure type
Artem Alimarine's avatar
Artem Alimarine committed
594
		, (!*Modules, !*TypeDefInfos, !*Heaps, !*ErrorAdmin)
595
		)
596
buildStructType {gi_module,gi_index} type_infos predefs (modules, td_infos, heaps, error)
597
	# (type_def=:{td_ident}, modules) = modules![gi_module].com_type_defs.[gi_index]	
598
	= build_type type_def type_infos (modules, td_infos, heaps, error)	
599
where
600
601
	build_type {td_rhs=AlgType alts, td_ident, td_pos} (AlgebraicInfo type_info cons_desc_list_ds gen_type_dss cons_infos) st
		# (cons_args, st) = zipWith3St (build_alt td_ident td_pos type_info) alts cons_infos gen_type_dss st
Artem Alimarine's avatar
Artem Alimarine committed
602
		# type = build_sum_type cons_args
603
		= (GTSObject type_info {gi_module=gi_module,gi_index=gi_index} cons_desc_list_ds type, st)
604
	build_type
605
606
			{td_rhs=RecordType {rt_constructor,rt_fields}, td_ident, td_pos} 
			(RecordInfo ci_record_info gen_type_ds field_list_ds ci_field_infos)
607
608
609
610
			(modules, td_infos, heaps, error)
		# ({cons_type={st_args},cons_exi_vars}, modules) = modules![gi_module].com_cons_defs.[rt_constructor.ds_index]
		| isEmpty cons_exi_vars
			# (args, st) = mapSt (convertATypeToGenTypeStruct td_ident td_pos predefs) st_args (modules, td_infos, heaps, error)		
611
			# args = [GTSField fi {gi_module=gi_module,gi_index=fs_index} ci_record_info arg \\ arg <- args & fi <- ci_field_infos & {fs_index}<-:rt_fields]
612
			# prod_type = build_prod_type args
613
			= (GTSRecord ci_record_info {gi_module=gi_module,gi_index=gi_index} gen_type_ds field_list_ds prod_type, st)
614
			# error = reportError td_ident.id_name td_pos "cannot build a generic representation of an existential type" error
615
			= (GTSE, (modules, td_infos, heaps, error))
616
	build_type {td_rhs=SynType type,td_ident, td_pos} type_infos (modules, td_infos, heaps, error)
617
		# error = reportError td_ident.id_name td_pos "cannot build a generic representation of a synonym type" error
Artem Alimarine's avatar
Artem Alimarine committed
618
		= (GTSE, (modules, td_infos, heaps, error))
619
	build_type td=:{td_rhs=(AbstractType _),td_ident, td_arity, td_args, td_pos} type_infos (modules, td_infos, heaps, error)
620
		# error = reportError td_ident.id_name td_pos "cannot build a generic representation of an abstract type" error
Artem Alimarine's avatar
Artem Alimarine committed
621
		= (GTSE, (modules, td_infos, heaps, error))
622

623
	build_alt td_ident td_pos type_info cons_def_sym=:{ds_index} cons_info gen_type_ds (modules, td_infos, heaps, error)
624
625
626
		# ({cons_type={st_args},cons_exi_vars}, modules) = modules![gi_module].com_cons_defs.[ds_index]
		| isEmpty cons_exi_vars
			# (args, st) = mapSt (convertATypeToGenTypeStruct td_ident td_pos predefs) st_args (modules, td_infos, heaps, error)	
627
			# prod_type = build_prod_type args
628
			= (GTSCons cons_info {gi_module=gi_module,gi_index=ds_index} type_info gen_type_ds prod_type, st)
629
			# error = reportError td_ident.id_name td_pos "cannot build a generic representation of an existential type" error
630
			= (GTSE, (modules, td_infos, heaps, error))
631
632
633
634
635

	build_prod_type :: [GenTypeStruct] -> GenTypeStruct
	build_prod_type types 
		= listToBin build_pair build_unit types	
	where
636
		build_pair x y = GTSPair x y
637
		build_unit = GTSUnit // GTSAppCons KindConst []	
638

639
640
641
642
	build_sum_type :: [GenTypeStruct] -> GenTypeStruct
	build_sum_type types
		= listToBin build_either build_void types
	where
643
		build_either x y = GTSEither x y
644
		build_void = abort "sanity check: no alternatives in a type\n"		
John van Groningen's avatar
John van Groningen committed
645

646
647
648
649
650
651
652
653
// build a binary representation of a list
listToBin :: (a a -> a) a [a] -> a 
listToBin bin tip [] = tip
listToBin bin tip [x] = x
listToBin bin tip xs
	# (l,r) = splitAt ((length xs) / 2) xs
	= bin (listToBin bin tip l) (listToBin bin tip r)

654
655
656
//	build type infos
buildTypeDefInfo :: 
		!CheckedTypeDef		// the type definition
657
		!Index 				// type def module
658
		!Index				// icl module
659
		!PredefinedSymbolsData
660
		!FunsAndGroups !*Modules !*Heaps !*ErrorAdmin
661
662
663
664
665
666
	-> 	(!TypeInfos, !FunsAndGroups, !*Modules, !*Heaps, !*ErrorAdmin)
buildTypeDefInfo td=:{td_rhs = AlgType alts} td_module main_module_index predefs funs_and_groups modules heaps error
	= buildAlgebraicTypeDefInfo td alts td_module main_module_index predefs funs_and_groups modules heaps error
buildTypeDefInfo td=:{td_rhs = RecordType {rt_constructor, rt_fields}} td_module main_module_index predefs funs_and_groups modules heaps error
	= buildRecordTypeDefInfo td rt_constructor [x\\x<-:rt_fields] td_module main_module_index predefs funs_and_groups modules heaps error
buildTypeDefInfo td=:{td_rhs = SynType type, td_ident, td_pos} td_module main_module_index predefs funs_and_groups modules heaps error
667
	# error = reportError td_ident.id_name td_pos "cannot build constructor information for a synonym type" error
668
669
	= buildAlgebraicTypeDefInfo td [] td_module main_module_index predefs funs_and_groups modules heaps error
buildTypeDefInfo td=:{td_rhs = AbstractType _, td_ident, td_pos} td_module main_module_index predefs funs_and_groups modules heaps error
670
	# error = reportError td_ident.id_name td_pos "cannot build constructor information for an abstract type" error
671
	= buildAlgebraicTypeDefInfo td [] td_module main_module_index predefs funs_and_groups modules heaps error
672

673
buildAlgebraicTypeDefInfo {td_ident, td_pos, td_arity} alts td_module main_module_index predefs
674
				funs_and_groups=:{fg_fun_index=fun_index,fg_group_index=group_index,fg_funs=funs,fg_groups=groups} modules heaps error
675
676
677
678

	# num_conses = length alts
	# new_group_index = inc group_index

679
680
681
682
683
	# cons_desc_list_index = fun_index
	  type_def_dsc_index = cons_desc_list_index + 1
	  first_gen_type_index = type_def_dsc_index + 1
	  first_cons_dsc_index = first_gen_type_index + num_conses
	  new_fun_index = first_cons_dsc_index + num_conses
684
685
686

	# group = {group_members = [fun_index .. new_fun_index - 1]}
	# new_groups = [group:groups]
687

688
689
690
691
692
693
	# cons_desc_list_ds = {ds_arity=0, ds_ident=makeIdent ("cli_"+++td_ident.id_name), ds_index=cons_desc_list_index}
	  type_def_dsc_ds = {ds_arity=0, ds_ident=makeIdent ("tdi_"+++td_ident.id_name), ds_index=type_def_dsc_index}
	  gen_type_dss = [ {ds_arity=0, ds_ident=makeIdent ("gti_"+++ds_ident.id_name), ds_index=i} \\ 
		{ds_ident} <- alts & i <- [first_gen_type_index .. first_gen_type_index + num_conses - 1]]
	  cons_dsc_dss = [ {ds_arity=0, ds_ident=makeIdent ("cdi_"+++ds_ident.id_name), ds_index=i} \\ 
		{ds_ident} <- alts & i <- [first_cons_dsc_index .. first_cons_dsc_index + num_conses - 1]]
694

695
	# (cons_desc_list_fun, heaps) = build_cons_desc_list_function group_index cons_desc_list_ds cons_dsc_dss heaps	
696

697
	  (type_def_dsc_fun, heaps) = build_type_def_dsc group_index /*cons_dsc_dss*/ type_def_dsc_ds cons_desc_list_ds heaps	
Artem Alimarine's avatar
Artem Alimarine committed
698

699
	  (gen_type_dsc_funs, (modules, heaps)) = zipWithSt (build_gen_type_function group_index main_module_index td_module td_pos predefs) gen_type_dss alts (modules, heaps)
700

701
	  (cons_dsc_funs, (modules, heaps)) = zipWith3St (build_cons_dsc group_index type_def_dsc_ds) cons_dsc_dss gen_type_dss alts (modules, heaps)
702

703
704
705
706
	// NOTE: reverse order (new functions are added at the head) 
	# new_funs = reverse cons_dsc_funs ++ reverse gen_type_dsc_funs ++ [type_def_dsc_fun, cons_desc_list_fun : funs] 

	# funs_and_groups = {funs_and_groups & fg_fun_index=new_fun_index, fg_group_index=new_group_index, fg_funs=new_funs, fg_groups=new_groups}
707

708
	# cons_infos = AlgebraicInfo type_def_dsc_ds cons_desc_list_ds gen_type_dss cons_dsc_dss
709
710

	= (cons_infos, funs_and_groups, modules, heaps, error)
711
where
712
	build_cons_desc_list_function group_index {ds_ident} cons_info_dss heaps
713
		# (cons_info_exprs, heaps) = mapSt (\x st->buildFunApp main_module_index x [] st) cons_info_dss heaps
714
715
716
		# (gtd_conses_expr, heaps) = makeListExpr cons_info_exprs predefs heaps // gtd_conses
		# fun = makeFunction ds_ident group_index [] gtd_conses_expr No main_module_index td_pos
		= (fun, heaps)
717

718
	build_type_def_dsc group_index /*cons_info_dss*/ {ds_ident} cons_desc_list_ds heaps
719
720
721
722
723
724
725
		# td_name_expr = makeStringExpr td_ident.id_name // gtd_name
		# td_arity_expr = makeIntExpr td_arity // gtd_arity
		# num_conses_expr = makeIntExpr (length alts) // gtd_num_conses
		# (gtd_conses_expr, heaps) = buildFunApp main_module_index cons_desc_list_ds [] heaps // gtd_conses
		# (body_expr, heaps) = buildPredefConsApp PD_CGenericTypeDefDescriptor
			[td_name_expr, td_arity_expr, num_conses_expr, gtd_conses_expr] // TODO: module_name_expr
			predefs heaps
726
		# fun = makeFunction ds_ident group_index [] body_expr No main_module_index td_pos
727
728
		= (fun, heaps)

729
	build_cons_dsc group_index type_def_info_ds {ds_ident} gen_type_ds cons_ds (modules, heaps)
730
		# ({cons_ident,cons_type,cons_priority,cons_number,cons_exi_vars}, modules)
731
732
733
734
735
736
737
738
			= modules![td_module].com_cons_defs.[cons_ds.ds_index]
		# name_expr 			 = makeStringExpr cons_ident.id_name // gcd_name
		# arity_expr 			 = makeIntExpr cons_type.st_arity // gcd_arity
		# (prio_expr, heaps)	 = make_prio_expr cons_priority predefs heaps // gcd_prio
		# (type_def_expr, heaps) = buildFunApp main_module_index type_def_info_ds [] heaps // gcd_type_def
		# (type_expr, heaps)	 = buildFunApp main_module_index gen_type_ds [] heaps // gcd_type
		# cons_index_expr		 = makeIntExpr cons_number // gcd_index
		# (body_expr, heaps)
739
			= buildPredefConsApp PD_CGenericConsDescriptor 
740
				[name_expr, arity_expr, prio_expr, type_def_expr, type_expr, cons_index_expr]
741
				predefs heaps
742
		# fun = makeFunction ds_ident group_index [] body_expr No main_module_index td_pos		
743
		= (fun, (modules, heaps))
744

745
746
747
748
749
750
751
752
753
754
755
756
757
make_prio_expr NoPrio predefs heaps
	= buildPredefConsApp PD_CGenConsNoPrio [] predefs heaps
make_prio_expr (Prio assoc prio) predefs heaps
	# assoc_predef = case assoc of
		NoAssoc 	-> PD_CGenConsAssocNone 
		LeftAssoc 	-> PD_CGenConsAssocLeft
		RightAssoc 	-> PD_CGenConsAssocRight
	# (assoc_expr, heaps) = buildPredefConsApp assoc_predef [] predefs heaps 	
	# prio_expr = makeIntExpr prio
	= buildPredefConsApp PD_CGenConsPrio [assoc_expr, prio_expr] predefs heaps 

buildRecordTypeDefInfo {td_ident, td_pos, td_arity} alt fields td_module main_module_index predefs
				funs_and_groups=:{fg_fun_index=fun_index,fg_group_index=group_index,fg_funs=funs,fg_groups=groups} modules heaps error
758

759
760
	# num_fields = length fields
	# new_group_index = inc group_index
761

762
763
764
765
766
	# gen_type_index = fun_index
	  field_list_index = gen_type_index + 1
	  cons_dsc_index = field_list_index + 1
	  first_field_dsc_index = cons_dsc_index + 1
	  new_fun_index = first_field_dsc_index + num_fields
767

768
769
	# group = {group_members = [fun_index .. new_fun_index - 1]}
	# new_groups = [group:groups]
770

771
772
773
774
775
	# gen_type_ds = {ds_arity=0, ds_ident=makeIdent ("gti_"+++alt.ds_ident.id_name), ds_index=gen_type_index}
	  field_list_ds = {ds_arity=0, ds_ident=makeIdent ("fli_"+++alt.ds_ident.id_name), ds_index=field_list_index}
	  record_dsc_ds = {ds_arity=0, ds_ident=makeIdent ("rdi_"+++alt.ds_ident.id_name), ds_index=cons_dsc_index}
	  field_dsc_dss = [ {ds_arity=0, ds_ident=makeIdent ("fdi_"+++fs_ident.id_name), ds_index=i} \\ 
		{fs_ident} <- fields & i <- [first_field_dsc_index .. first_field_dsc_index + num_fields - 1]]
776

777
	# (gen_type_dsc_fun, (modules, heaps)) = build_gen_type_function group_index main_module_index td_module td_pos predefs gen_type_ds alt (modules, heaps)
778

779
	  (field_list_fun, (modules, heaps)) = build_field_list_function group_index field_list_ds (modules, heaps)
780

781
	  (record_dsc_fun, (modules, heaps)) = build_record_dsc group_index td_ident record_dsc_ds gen_type_ds field_list_ds alt (modules, heaps)
782

783
784
785
786
	  (field_dsc_funs, (modules, heaps)) = zipWithSt (build_field_dsc group_index record_dsc_ds) field_dsc_dss fields (modules, heaps)
	 
	// NOTE: reverse order (new functions are added at the head) 
	# new_funs = reverse field_dsc_funs ++ [record_dsc_fun, field_list_fun, gen_type_dsc_fun : funs]
787

788
	# funs_and_groups = {funs_and_groups & fg_fun_index=new_fun_index, fg_group_index=new_group_index, fg_funs=new_funs, fg_groups=new_groups}
Artem Alimarine's avatar
Artem Alimarine committed
789

790
	# cons_infos = RecordInfo record_dsc_ds gen_type_ds field_list_ds field_dsc_dss
Artem Alimarine's avatar
Artem Alimarine committed
791

792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
	= (cons_infos, funs_and_groups, modules, heaps, error)
where
	build_field_list_function group_index field_list_ds (modules, heaps)
		# field_exprs		 	 = [makeStringExpr id_name \\ {fs_ident={id_name}}<-fields]
		# (fields_expr, heaps)   = makeListExpr field_exprs predefs heaps // grd_fields
		# fun = makeFunction field_list_ds.ds_ident group_index [] fields_expr No main_module_index td_pos		
		= (fun, (modules, heaps))

	build_record_dsc group_index td_ident cons_info_ds gen_type_ds field_list_ds cons_ds (modules, heaps)
		# ({cons_ident,cons_type,cons_priority,cons_number}, modules)
			= modules![td_module].com_cons_defs.[cons_ds.ds_index]
		# name_expr 			 = makeStringExpr td_ident.id_name /*cons_ident.id_name*/ // grd_name
		# arity_expr 			 = makeIntExpr cons_type.st_arity // grd_arity
		# td_arity_expr 		 = makeIntExpr td_arity // grd_type_arity
		# (type_expr, heaps)	 = buildFunApp main_module_index gen_type_ds [] heaps // grd_type
		# (fields_expr, heaps)	 = buildFunApp main_module_index field_list_ds [] heaps // grd_fields
		# (body_expr, heaps)
			= buildPredefConsApp PD_CGenericRecordDescriptor
				[name_expr, arity_expr, td_arity_expr, type_expr, fields_expr]
				predefs heaps
		# fun = makeFunction cons_info_ds.ds_ident group_index [] body_expr No main_module_index td_pos		
		= (fun, (modules, heaps))

	build_field_dsc group_index record_dsc_ds field_dsc_ds {fs_ident, fs_index} (modules, heaps)
		# ({sd_field_nr}, modules)
			= modules![td_module].com_selector_defs.[fs_index]
		# name_expr = makeStringExpr fs_ident.id_name // gfd_name
		# index_expr = makeIntExpr sd_field_nr // gfd_index
		# (cons_expr, heaps) = buildFunApp main_module_index record_dsc_ds [] heaps // gfd_cons
Artem Alimarine's avatar
Artem Alimarine committed
821
		# (body_expr, heaps) 
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
			= buildPredefConsApp PD_CGenericFieldDescriptor 
				[name_expr, index_expr, cons_expr]
				predefs heaps
		# fun = makeFunction field_dsc_ds.ds_ident group_index [] body_expr No main_module_index td_pos		
		= (fun, (modules, heaps))

build_gen_type_function group_index main_module_index td_module td_pos predefs cons_info_ds cons_ds (modules, heaps)
	# ({cons_type,cons_exi_vars}, modules) = modules![td_module].com_cons_defs.[cons_ds.ds_index]
	# (type_expr, heaps) 	 = make_type_expr cons_exi_vars cons_type heaps
	# fun = makeFunction cons_info_ds.ds_ident group_index [] type_expr No main_module_index td_pos		
	= (fun, (modules, heaps))
where
	make_type_expr [] {st_vars, st_args, st_result} heaps=:{hp_type_heaps=type_heaps=:{th_vars}}
		# (_,th_vars) = foldSt (\ {tv_info_ptr} (n, th_vars) -> (n+1, writePtr tv_info_ptr (TVI_GenTypeVarNumber n) th_vars)) st_vars (0,th_vars)
		# heaps = {heaps & hp_type_heaps={type_heaps & th_vars=th_vars}}
		# (arg_exprs, heaps) = mapSt make_expr1 st_args heaps
		# (result_expr, heaps) = make_expr1 st_result heaps
		# {hp_type_heaps=type_heaps=:{th_vars}} = heaps
		# th_vars = foldSt (\ {tv_info_ptr} th_vars -> writePtr tv_info_ptr TVI_Empty th_vars) st_vars th_vars
		# heaps = {heaps & hp_type_heaps={type_heaps & th_vars=th_vars}}
		= curry arg_exprs result_expr heaps
	where
		curry [] result_expr heaps 
			= (result_expr, heaps)
		curry [x:xs] result_expr heaps
			# (y, heaps) = curry xs result_expr heaps
			= make_arrow x y heaps

		make_expr1 :: !AType !*Heaps -> (!Expression, !*Heaps)
		make_expr1 {at_type} heaps = make_expr at_type heaps

		make_expr :: !Type !*Heaps -> (!Expression, !*Heaps)
		make_expr (TA type_symb arg_types) heaps
			# (arg_exprs, heaps) = mapSt make_expr1 arg_types heaps
			# (type_cons, heaps) = make_type_cons type_symb.type_ident.id_name heaps 
			= make_apps type_cons arg_exprs heaps
		make_expr (TAS type_symb arg_types _) heaps
			# (arg_exprs, heaps) = mapSt make_expr1 arg_types heaps
			# (type_cons, heaps) = make_type_cons type_symb.type_ident.id_name heaps 
			= make_apps type_cons arg_exprs heaps
		make_expr (x --> y) heaps
			# (x, heaps) = make_expr1 x heaps
			# (y, heaps) = make_expr1 y heaps				
			= make_arrow x y heaps
		make_expr TArrow heaps 
			= make_type_cons "(->)" heaps
		make_expr (TArrow1 type) heaps
			# (arg_expr, heaps) = make_expr1 type heaps 
			# (arrow_expr, heaps) = make_type_cons "(->)" heaps
			= make_app arrow_expr arg_expr heaps
		make_expr (CV {tv_info_ptr} :@: arg_types) heaps
			# (arg_exprs, heaps) = mapSt make_expr1 arg_types heaps
			# (tv_expr, heaps) = make_type_var tv_info_ptr heaps
			= make_apps tv_expr arg_exprs heaps
		make_expr (TB bt) heaps
			= make_type_cons (toString bt) heaps	
		make_expr (TV {tv_info_ptr}) heaps 
			= make_type_var tv_info_ptr heaps 
		make_expr (GTV {tv_info_ptr}) heaps
			= make_type_var tv_info_ptr heaps 
		make_expr TE heaps
			= make_error_type_cons heaps
		make_expr (TFA _ _) heaps
			// error is reported in convertATypeToGenTypeStruct
			= make_error_type_cons heaps
887
888
889
		make_expr (TFAC _ _ _) heaps
			// error is reported in convertATypeToGenTypeStruct
			= make_error_type_cons heaps
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
		make_expr _ heaps
			= abort "type does not match\n"

		make_apps x [] heaps 
			= (x, heaps)
		make_apps x [y:ys] heaps
			# (z, heaps) = make_app x y heaps	
			= make_apps z ys heaps

		make_type_var tv_info_ptr heaps
			#! type_var_n = case sreadPtr tv_info_ptr heaps.hp_type_heaps.th_vars of
								TVI_GenTypeVarNumber n -> n
			= buildPredefConsApp PD_CGenTypeVar [makeIntExpr type_var_n] predefs heaps									

		make_arrow x y heaps = buildPredefConsApp PD_CGenTypeArrow [x, y] predefs heaps

		make_app x y heaps = buildPredefConsApp PD_CGenTypeApp [x, y] predefs heaps 	 

		make_error_type_cons heaps = make_type_cons "<error>" heaps
	make_type_expr [_:_] {st_vars, st_args, st_result} heaps
		// Error "cannot build a generic representation of an existential type" is reported in buildStructType
		= make_type_cons "<error>" heaps
Artem Alimarine's avatar
Artem Alimarine committed
912

913
914
915
	make_type_cons name heaps
		# name_expr = makeStringExpr name
		= buildPredefConsApp PD_CGenTypeCons [name_expr] predefs heaps
Artem Alimarine's avatar
Artem Alimarine committed
916

917
918
919
920
921
922
923
924
//	conversions functions

// buildConversionIso
buildConversionIso :: 
		!CheckedTypeDef		// the type definition
		!DefinedSymbol		// from fun
		!DefinedSymbol	 	// to fun
		!Index				// main module
925
		!PredefinedSymbolsData