convertDynamics.icl 60.8 KB
Newer Older
Ronny Wichers Schreur's avatar
Ronny Wichers Schreur committed
1
2
implementation module convertDynamics

3
4
import syntax, transform, utilities, convertcases /* MV ... */, compilerSwitches /* ... MV */
from type_io_common import PredefinedModuleName
5
// Optional
6
7
USE_TUPLES tuple b :== b;					// change also StdDynamic.icl and recompile all applications
extended_unify_and_coerce no yes :== no;	// change also _unify and _coerce in StdDynamic
Martijn Vervoort's avatar
Martijn Vervoort committed
8

9
//import pp;
Martijn Vervoort's avatar
Martijn Vervoort committed
10

11
APPEND_DEFINING_TYPE_MODULE_NAMES_TO_TYPE_NAMES yes no :== yes
12
import type_io; 
13
//import RWSDebug;
Ronny Wichers Schreur's avatar
Ronny Wichers Schreur committed
14
15
16
17
18

::	*ConversionInfo =
	{	ci_predef_symb		:: !*PredefinedSymbols
	,	ci_var_heap			:: !*VarHeap
	,	ci_expr_heap		:: !*ExpressionHeap
19
	,	ci_new_variables 	:: ![FreeVar]
Ronny Wichers Schreur's avatar
Ronny Wichers Schreur committed
20
21
22
	,	ci_new_functions 	:: ![FunctionInfoPtr]
	,	ci_fun_heap			:: !*FunctionHeap
	,	ci_next_fun_nr		:: !Index
Martijn Vervoort's avatar
Martijn Vervoort committed
23
24
	
	//	data needed to generate coercions
25
	,	ci_placeholders_and_tc_args				:: [(!BoundVar,Ptr VarInfo)]
26
27
	,	ci_generated_global_tc_placeholders		:: !Bool
	,	ci_used_tcs								:: [Ptr VarInfo]
28
29
30
31
	,	ci_symb_ident							:: SymbIdent
	,	ci_sel_type_field						:: Expression -> Expression  //Optional (!Int,!(Global DefinedSymbol))
	,	ci_sel_value_field						:: Expression -> Expression  //Optional (!Int,!(Global DefinedSymbol))
	,	ci_module_id_symbol						:: Expression
32
33
	,	ci_internal_type_id						:: Expression
	,	ci_module_id							:: Optional LetBind
Ronny Wichers Schreur's avatar
Ronny Wichers Schreur committed
34
35
36
37
38
	}

::	ConversionInput =
	{	cinp_glob_type_inst	:: !{! GlobalTCType} 
	,	cinp_group_index	:: !Int
39
	,	cinp_st_args		:: ![FreeVar]
Ronny Wichers Schreur's avatar
Ronny Wichers Schreur committed
40
41
42
43
44
45
46
47
	}

:: OpenedDynamic =
	{	opened_dynamic_expr :: Expression
	, 	opened_dynamic_type :: Expression
	}

:: DefaultExpression :== Optional (BoundVar, [IndirectionVar])   //DefaultRecord
48
49
50

::	BoundVariables :== [TypedVariable]

Ronny Wichers Schreur's avatar
Ronny Wichers Schreur committed
51
:: IndirectionVar    :== BoundVar
52

53
54
55

pl [] = ""
pl [x:xs] = x +++ " , " +++ (pl xs)
56

57
58
F :: !a .b -> .b
F a b = b
Ronny Wichers Schreur's avatar
Ronny Wichers Schreur committed
59

60
61

//write_tcl_file :: !Int {#DclModule} CommonDefs !*File [String] -> (.Bool,.File)
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
write_tcl_file :: !Int {#DclModule} CommonDefs !*File [String] !*TypeHeaps -> (.Bool,.File,!*TypeHeaps)
write_tcl_file main_dcl_module_n dcl_mods=:{[main_dcl_module_n] = main_dcl_module} common_defs tcl_file directly_imported_dcl_modules type_heaps
	# write_type_info_state2
		= { WriteTypeInfoState |
			wtis_type_heaps		= type_heaps
		,	wtis_n_type_vars		= 0
		};
	# (j,tcl_file)
		= fposition tcl_file
//	| True
//		= abort ("TypeVar " +++ toString j)
				
	#! (tcl_file,write_type_info_state)
		= write_type_info common_defs tcl_file write_type_info_state2
	#! (tcl_file,write_type_info_state)
		= write_type_info directly_imported_dcl_modules tcl_file write_type_info_state
		
	#! (type_heaps,_)
		= f write_type_info_state //!type_heaps;
		
		
Martijn Vervoort's avatar
Martijn Vervoort committed
83
84
	#! tcl_file
		= fwritei (size main_dcl_module.dcl_common.com_type_defs) tcl_file
Martijn Vervoort's avatar
Martijn Vervoort committed
85
86
	#! tcl_file
		= fwritei (size main_dcl_module.dcl_common.com_cons_defs) tcl_file
87
88
89
90
91
	= (True,tcl_file,type_heaps) 
	
where
	f write_type_info_state=:{wtis_type_heaps}
		= (wtis_type_heaps,{write_type_info_state & wtis_type_heaps = abort "convertDynamics.icl"});
Martijn Vervoort's avatar
Martijn Vervoort committed
92
//---> ("dcl",size main_dcl_module.dcl_common.com_type_defs, "icl", size common_defs.com_type_defs);
93

94
			
95
96
convertDynamicPatternsIntoUnifyAppls :: {! GlobalTCType} !{# CommonDefs} !Int !*{! Group} !*{#FunDef} !*PredefinedSymbols !*VarHeap !*TypeHeaps !*ExpressionHeap /* TD */ (Optional !*File) {# DclModule} !IclModule /* TD */ [String]
			-> (!*{! Group}, !*{#FunDef}, !*PredefinedSymbols, !*{#{# CheckedTypeDef}}, !ImportedConstructors, !*VarHeap, !*TypeHeaps, !*ExpressionHeap, /* TD */ (Optional !*File))
Martijn Vervoort's avatar
Martijn Vervoort committed
97
convertDynamicPatternsIntoUnifyAppls global_type_instances common_defs main_dcl_module_n groups fun_defs predefined_symbols var_heap type_heaps expr_heap /* TD */ tcl_file dcl_mods icl_mod  /* TD */ directly_imported_dcl_modules
98
	// TD ...
99
	# (tcl_file,type_heaps)
100
101
		= case tcl_file of
			No
102
				-> (No,type_heaps)
103
			(Yes tcl_file)
104
105
				# (ok,tcl_file,type_heaps)
					= write_tcl_file main_dcl_module_n dcl_mods icl_mod.icl_common tcl_file /* TD */ directly_imported_dcl_modules type_heaps
106
107
				| not ok
					-> abort "convertDynamicPatternsIntoUnifyAppls: error writing tcl file"
108
					-> (Yes tcl_file,type_heaps)
109
110

				
111
	// ... TD
112
	# ({pds_module, pds_def} , predefined_symbols) = predefined_symbols![PD_StdDynamic]
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
	#! (dynamic_temp_symb_ident,ci_sel_value_field,ci_sel_type_field,predefined_symbols)
		= case (pds_module == (-1) || pds_def == (-1)) of
			True
				-> (undef,undef,undef,predefined_symbols)
			_	
				 
				-> case (USE_TUPLES True False) /*(pds_module == (-1) || pds_def == (-1))*/ of
					True
						# arity = 2
						// get tuple arity 2 constructor
						# ({pds_module, pds_def, pds_ident}, predefined_symbols)	= predefined_symbols![GetTupleConsIndex arity]
						# twoTuple_symb	= { symb_name = pds_ident, symb_kind = SK_Constructor { glob_module = pds_module, glob_object = pds_def}, symb_arity = arity }
						
						// get tuple, type and value selectors
						# ({pds_def, pds_ident}, predefined_symbols) = predefined_symbols![GetTupleConsIndex arity]
						# twotuple = {ds_ident = pds_ident, ds_arity = arity, ds_index = pds_def}
						# type_selector	= TupleSelect twotuple 1
						# value_selector = TupleSelect twotuple 0
						-> (twoTuple_symb,value_selector,type_selector,predefined_symbols)
					False
					
						# arity = 2
						# ({pds_module=pds_module1, pds_def=pds_def1} , predefined_symbols) = predefined_symbols![PD_DynamicTemp]
						# {td_rhs=RecordType {rt_constructor,rt_fields}} = common_defs.[pds_module1].com_type_defs.[pds_def1]
							
						# dynamic_temp_symb_ident
							= { SymbIdent |
								symb_name	= rt_constructor.ds_ident
							,	symb_kind 	= SK_Constructor {glob_module = pds_module1, glob_object = rt_constructor.ds_index} 
							,	symb_arity	= rt_constructor.ds_arity
							}
		
						// type field
						# ({pds_module=pds_module2, pds_def=pds_def2} , predefined_symbols) = predefined_symbols![PD_DynamicType]
						# {sd_field,sd_field_nr}
							= common_defs.[pds_module2].com_selector_defs.[pds_def2]
		
						#! type_defined_symbol
							= { Global |
								glob_object		= { DefinedSymbol |
													ds_ident		= sd_field
												,	ds_arity		= 0
155
												,	ds_index		= pds_def2 
156
												}
157
							,	glob_module		= pds_module2 
158
159
160
							}
						#! ci_sel_type_field
							= (\dynamic_expr -> Selection No dynamic_expr [RecordSelection type_defined_symbol sd_field_nr])
161
							
162
163
164
165
166
167
168
169
170
171
						// value field
						# ({pds_module=pds_module3, pds_def=pds_def3} , predefined_symbols) = predefined_symbols![PD_DynamicValue]
						# {sd_field=sd_field3,sd_field_nr=sd_field_nr3}
							= common_defs.[pds_module3].com_selector_defs.[pds_def3]
											
						#! value_defined_symbol
							= { Global |
								glob_object		= { DefinedSymbol |
													ds_ident		= sd_field3
												,	ds_arity		= 0
172
												,	ds_index		= pds_def3 
173
												}
174
							,	glob_module		= pds_module3
175
176
177
							}
						#! ci_sel_value_field
							= (\dynamic_expr -> Selection No dynamic_expr [RecordSelection value_defined_symbol sd_field_nr3])
178
179
						-> (dynamic_temp_symb_ident, ci_sel_value_field, ci_sel_type_field,predefined_symbols)
						
180
181
	# (module_symb,module_id_app,predefined_symbols)
		= get_module_id_app predefined_symbols
182
						
Ronny Wichers Schreur's avatar
Ronny Wichers Schreur committed
183
	#! nr_of_funs = size fun_defs
184
	# imported_types = {com_type_defs \\ {com_type_defs} <-: common_defs }
Ronny Wichers Schreur's avatar
Ronny Wichers Schreur committed
185
186
187
	# (groups, (fun_defs, {ci_predef_symb, ci_var_heap, ci_expr_heap, ci_fun_heap, ci_new_functions}))
			= convert_groups 0 groups global_type_instances (fun_defs, {	
							ci_predef_symb = predefined_symbols, ci_var_heap = var_heap, ci_expr_heap = expr_heap,
188
189
							ci_new_functions = [], ci_new_variables = [], ci_fun_heap = newHeap, ci_next_fun_nr = nr_of_funs, ci_placeholders_and_tc_args = [],
							ci_generated_global_tc_placeholders = False,
190
							ci_used_tcs = [],ci_symb_ident = dynamic_temp_symb_ident , ci_sel_type_field =  ci_sel_type_field, ci_sel_value_field = ci_sel_value_field, 
191
192
193
							ci_module_id_symbol = App module_symb,
							ci_internal_type_id = module_id_app,
							ci_module_id		  = No })
Ronny Wichers Schreur's avatar
Ronny Wichers Schreur committed
194
	  (groups, new_fun_defs, imported_types, imported_conses, type_heaps, ci_var_heap)
195
			= addNewFunctionsToGroups common_defs ci_fun_heap ci_new_functions main_dcl_module_n groups imported_types [] type_heaps ci_var_heap
196
	= (groups, { fundef \\ fundef <- [ fundef \\ fundef <-: fun_defs ] ++ new_fun_defs }, ci_predef_symb, imported_types, imported_conses, ci_var_heap, type_heaps, ci_expr_heap, tcl_file)
Ronny Wichers Schreur's avatar
Ronny Wichers Schreur committed
197
198
199
200
where
	convert_groups group_nr groups global_type_instances fun_defs_and_ci
		| group_nr == size groups
			= (groups, fun_defs_and_ci)
201
			# (group, groups) = groups![group_nr]
Ronny Wichers Schreur's avatar
Ronny Wichers Schreur committed
202
203
204
			= convert_groups (inc group_nr) groups global_type_instances (foldSt (convert_function group_nr global_type_instances) group.group_members fun_defs_and_ci)

	convert_function group_nr global_type_instances fun (fun_defs, ci)
Sjaak Smetsers's avatar
bug fix    
Sjaak Smetsers committed
205
206
207
208
		# (fun_def, fun_defs) = fun_defs![fun]
		  {fun_body, fun_type, fun_info} = fun_def
		| isEmpty fun_info.fi_dynamics
			= (fun_defs, ci)
209
210
			# ci 
				= { ci & ci_used_tcs = [], ci_generated_global_tc_placeholders = False }
211
			# (fun_body, ci) = convert_dynamics_in_body {cinp_st_args = [], cinp_glob_type_inst = global_type_instances, cinp_group_index = group_nr} fun_body fun_type ci
Sjaak Smetsers's avatar
bug fix    
Sjaak Smetsers committed
212
213
			= ({fun_defs & [fun] = { fun_def & fun_body = fun_body, fun_info = { fun_info & fi_local_vars = ci.ci_new_variables ++ fun_info.fi_local_vars }}},
				{ ci & ci_new_variables = [] })
214
215
216
217
// MV ..
	convert_dynamics_in_body global_type_instances (TransformedBody {tb_args,tb_rhs}) (Yes {st_context, st_args}) ci
		# vars_with_types = bindVarsToTypes2 st_context tb_args st_args [] common_defs
// .. MV
218
		  (tb_rhs, ci) = convertDynamics {global_type_instances & cinp_st_args = tb_args} vars_with_types No tb_rhs ci
Ronny Wichers Schreur's avatar
Ronny Wichers Schreur committed
219
220
221
222
		= (TransformedBody {tb_args = tb_args,tb_rhs = tb_rhs}, ci)
	convert_dynamics_in_body global_type_instances other fun_type ci
		= abort "unexpected value in 'convert dynamics.convert_dynamics_in_body'"

223
224
225
226
// MV ..
bindVarsToTypes2 st_context vars types typed_vars common_defs
	:== bindVarsToTypes vars (addTypesOfDictionaries common_defs st_context types) typed_vars
// .. MV
227
228
229
230
231
bindVarsToTypes vars types typed_vars
	= fold2St bind_var_to_type vars types typed_vars
where
	bind_var_to_type var type typed_vars
		= [{tv_free_var = var, tv_type = type } : typed_vars]
Ronny Wichers Schreur's avatar
Ronny Wichers Schreur committed
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248

class convertDynamics a :: !ConversionInput !BoundVariables !DefaultExpression !a !*ConversionInfo -> (!a, !*ConversionInfo)

instance convertDynamics [a]  |  convertDynamics a
where
	convertDynamics :: !ConversionInput !BoundVariables !DefaultExpression ![a] !*ConversionInfo -> (![a], !*ConversionInfo)  |  convertDynamics a
	convertDynamics cinp bound_vars default_expr xs ci = mapSt (convertDynamics cinp bound_vars default_expr) xs ci

instance convertDynamics (Optional a)  |  convertDynamics a
where
	convertDynamics :: !ConversionInput !BoundVariables !DefaultExpression !(Optional a) !*ConversionInfo -> (!Optional a, !*ConversionInfo)  |  convertDynamics a
	convertDynamics cinp bound_vars default_expr (Yes x)	ci
		# (x, ci) = convertDynamics cinp bound_vars default_expr x ci
		= (Yes x, ci)
	convertDynamics _ _ _ No ci
		= (No, ci)

249
250
251
252
253
254
255
instance convertDynamics LetBind
where
	convertDynamics :: !ConversionInput !BoundVariables !DefaultExpression !LetBind !*ConversionInfo -> (!LetBind, !*ConversionInfo)
	convertDynamics cinp bound_vars default_expr binding=:{lb_src} ci
		# (lb_src, ci) = convertDynamics cinp bound_vars default_expr lb_src ci
		= ({binding &  lb_src = lb_src}, ci)

Ronny Wichers Schreur's avatar
Ronny Wichers Schreur committed
256
257
258
259
260
261
262
263
264
instance convertDynamics (Bind a b)  |  convertDynamics a
where
	convertDynamics :: !ConversionInput !BoundVariables !DefaultExpression !(Bind a b) !*ConversionInfo -> (!Bind a b, !*ConversionInfo)  |  convertDynamics a
	convertDynamics cinp bound_vars default_expr binding=:{bind_src} ci
		# (bind_src, ci) = convertDynamics cinp bound_vars default_expr bind_src ci
		= ({binding &  bind_src = bind_src}, ci)

convertDynamicsOfAlgebraicPattern :: !ConversionInput !BoundVariables !DefaultExpression !(!AlgebraicPattern,[AType]) !*ConversionInfo -> (!AlgebraicPattern,!*ConversionInfo)
convertDynamicsOfAlgebraicPattern cinp bound_vars default_expr (algebraic_pattern=:{ap_vars, ap_expr}, arg_types_of_conses) ci
265
	# (ap_expr, ci) = convertDynamics cinp (bindVarsToTypes ap_vars arg_types_of_conses bound_vars) default_expr ap_expr ci
Ronny Wichers Schreur's avatar
Ronny Wichers Schreur committed
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
	= ({algebraic_pattern &  ap_expr = ap_expr}, ci)

instance convertDynamics BasicPattern
where
	convertDynamics :: !ConversionInput !BoundVariables !DefaultExpression !BasicPattern !*ConversionInfo -> (!BasicPattern, !*ConversionInfo)
	convertDynamics cinp bound_vars default_expr basic_pattern=:{bp_expr} ci
		# (bp_expr, ci) = convertDynamics cinp bound_vars default_expr bp_expr ci
		= ({basic_pattern &  bp_expr = bp_expr}, ci)


instance convertDynamics Expression
where
	convertDynamics :: !ConversionInput !BoundVariables !DefaultExpression !Expression !*ConversionInfo -> (!Expression, !*ConversionInfo)
	convertDynamics cinp bound_vars default_expr (Var var) ci
		= (Var var, ci)
	convertDynamics cinp bound_vars default_expr (App appje=:{app_args}) ci
		# (app_args,ci) = convertDynamics cinp bound_vars default_expr app_args ci
		= (App {appje &  app_args = app_args}, ci)
	convertDynamics cinp bound_vars default_expr (expr @ exprs) ci
		# (expr,  ci) = convertDynamics cinp bound_vars default_expr expr  ci
		  (exprs, ci) = convertDynamics cinp bound_vars default_expr exprs ci
		= (expr @ exprs, ci)
Sjaak Smetsers's avatar
Sjaak Smetsers committed
288
	convertDynamics cinp bound_vars default_expr (Let letje=:{let_strict_binds, let_lazy_binds, let_expr,let_info_ptr}) ci
Ronny Wichers Schreur's avatar
Ronny Wichers Schreur committed
289
		# (let_types, ci) = determine_let_types let_info_ptr ci
290
291
// MW0		  bound_vars = bindVarsToTypes [ bind.bind_dst \\ bind <- let_strict_binds ++ let_lazy_binds ] let_types bound_vars
		  bound_vars = bindVarsToTypes [ bind.lb_dst \\ bind <- let_strict_binds ++ let_lazy_binds ] let_types bound_vars
Sjaak Smetsers's avatar
Sjaak Smetsers committed
292
293
294
295
		  (let_strict_binds, ci)	= convertDynamics cinp bound_vars default_expr let_strict_binds ci
		  (let_lazy_binds, ci)		= convertDynamics cinp bound_vars default_expr let_lazy_binds ci
		  (let_expr,  ci) 			= convertDynamics cinp bound_vars default_expr let_expr  ci
		= (Let { letje &  let_strict_binds = let_strict_binds, let_lazy_binds = let_lazy_binds, let_expr = let_expr}, ci)
Ronny Wichers Schreur's avatar
Ronny Wichers Schreur committed
296
297
298
299
300
301
302
303
304
305
306
307
308
	where
		determine_let_types let_info_ptr ci=:{ci_expr_heap}
			# (EI_LetType let_types, ci_expr_heap) = readPtr let_info_ptr ci_expr_heap
			= (let_types, { ci & ci_expr_heap = ci_expr_heap })

	convertDynamics cinp bound_vars default_expr (Case keesje=:{case_expr, case_guards, case_default, case_info_ptr}) ci
		# (case_expr,    ci) = convertDynamics cinp bound_vars default_expr case_expr ci
		  (case_default, ci) = convertDynamics cinp bound_vars default_expr case_default ci
		  (this_case_default, nested_case_default, ci) = determine_defaults case_default default_expr ci
		  (EI_CaseType {ct_cons_types, ct_result_type}, ci_expr_heap) = readPtr case_info_ptr ci.ci_expr_heap
		  ci = { ci & ci_expr_heap = ci_expr_heap }
		= case case_guards of
			(AlgebraicPatterns type algebraic_patterns)
309
310
311
312
313
314
315
316
317
318
319
// MV DEFAULT ...
				| not (isNo this_case_default) && any (\algebraic_pattern -> is_case_without_default algebraic_pattern) algebraic_patterns
					// a default to be moved inwards and a root positioned case not having a default
					// 
					// Example:
					//	loadandrun2 :: ![(!Dynamic, !Dynamic)] !*World -> *World
					//	loadandrun2 [(f :: BatchProcess i o, input :: i)] world = abort "alt BatchProcess"
					//	loadandrun2 [(f :: InteractiveProcess i o, input :: i)] world = abort "alt InteractiveProcess" 
					//	loadandrun2 _ _ = abort "Loader: process and input do not match"
					//
					# (Yes old_case_default) = this_case_default
320
//					# (let_info_ptr,  ci) = let_ptr ci
321
322
323
324
325
326
327
328
329
330
331
332
333
334
					# (default_var, ci) = newVariable "s" (VI_BoundVar {at_attribute=TA_None,at_annotation=AN_None,at_type=TE}) ci
					# default_fv = varToFreeVar default_var 1
					# ci
						= { ci & ci_new_variables = [default_fv : ci.ci_new_variables]}
					# let_bind = {
							lb_src = old_case_default
						,	lb_dst = default_fv
						, lb_position = NoPos }					
					# (new_case_default, nested_case_default, ci) 
						= determine_defaults (Yes (Var default_var)) default_expr ci
					# algebraic_patterns			
						= map (patch_defaults new_case_default) algebraic_patterns
					#  (algebraic_patterns, ci) = mapSt (convertDynamicsOfAlgebraicPattern cinp bound_vars nested_case_default)
														(zip2 algebraic_patterns ct_cons_types) ci
335
336
/* Sjaak */
					# (let_info_ptr,  ci) = let_ptr 1 ci
337
338
339
340
341
342
343
344
345
346
347
348
349
350
					# letje
						= Let {
							let_strict_binds	= []
						,	let_lazy_binds		= [let_bind]
						,	let_expr			= Case {keesje &  case_expr = case_expr, case_guards = AlgebraicPatterns type algebraic_patterns, case_default = new_case_default }
						,	let_info_ptr		= let_info_ptr
						,	let_expr_position	= NoPos
						}		
					-> (letje,ci)
			
					#  (algebraic_patterns, ci) = mapSt (convertDynamicsOfAlgebraicPattern cinp bound_vars nested_case_default)
														(zip2 algebraic_patterns ct_cons_types) ci
					-> (Case {keesje &  case_expr = case_expr, case_guards = AlgebraicPatterns type algebraic_patterns, case_default = this_case_default}, ci)
// ... MV DEFAULT
Ronny Wichers Schreur's avatar
Ronny Wichers Schreur committed
351
352
353
			(BasicPatterns type basic_patterns)
				#  (basic_patterns, ci) = convertDynamics  cinp bound_vars nested_case_default basic_patterns ci
				-> (Case {keesje &  case_expr = case_expr, case_guards = BasicPatterns type basic_patterns, case_default = this_case_default}, ci)
354
355
356
357
			(OverloadedListPatterns type decons_expr algebraic_patterns)
				#  (algebraic_patterns, ci) = mapSt (convertDynamicsOfAlgebraicPattern cinp bound_vars nested_case_default)
													(zip2 algebraic_patterns ct_cons_types) ci
				-> (Case {keesje &  case_expr = case_expr, case_guards = OverloadedListPatterns type decons_expr algebraic_patterns, case_default = this_case_default}, ci)
Ronny Wichers Schreur's avatar
Ronny Wichers Schreur committed
358
359
360
361
362
363
364
			(DynamicPatterns dynamic_patterns)
				#  keesje = {keesje &  case_expr = case_expr, case_default = this_case_default}
				-> convertDynamicPatterns cinp bound_vars keesje ci
			NoPattern
				-> (Case {keesje &  case_expr = case_expr, case_guards = NoPattern, case_default = this_case_default}, ci)
			_
				-> abort "unexpected value in convertDynamics: 'convertDynamics.CasePatterns'"
365
366
367
368
369
370
371
372
373
374
375
// MV DEFAULT ...
	where
		is_case_without_default {ap_expr=Case {case_default=No}}	= True
		is_case_without_default _									= False
	
		patch_defaults this_case_default ap=:{ap_expr=Case keesje=:{case_default=No}} 
			= { ap & ap_expr = Case {keesje & case_default = this_case_default} }
		patch_defaults _ expr
			= expr
// ... MV DEFAULT
			
Ronny Wichers Schreur's avatar
Ronny Wichers Schreur committed
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
	convertDynamics cinp bound_vars default_expr (Selection opt_symb expression selections) ci
		# (expression,ci) = convertDynamics cinp bound_vars default_expr expression ci
		= (Selection opt_symb expression selections, ci)
	convertDynamics cinp bound_vars default_expr (Update expression1 selections expression2) ci
		# (expression1,ci) = convertDynamics cinp bound_vars default_expr expression1 ci
		# (expression2,ci) = convertDynamics cinp bound_vars default_expr expression2 ci
		= (Update expression1 selections expression2, ci)
	convertDynamics cinp bound_vars default_expr (RecordUpdate cons_symbol expression expressions) ci
		# (expression,ci) = convertDynamics cinp bound_vars default_expr expression ci
		# (expressions,ci) = convertDynamics cinp bound_vars default_expr expressions ci
		= (RecordUpdate cons_symbol expression expressions, ci)
	convertDynamics cinp bound_vars default_expr (TupleSelect definedSymbol int expression) ci
		# (expression,ci) = convertDynamics cinp bound_vars default_expr expression ci
		= (TupleSelect definedSymbol int expression, ci)
	convertDynamics _ _ _ (BasicExpr basicValue basicType) ci
		= (BasicExpr basicValue basicType, ci)
	convertDynamics _ _ _ (AnyCodeExpr codeBinding1 codeBinding2 strings) ci
		= (AnyCodeExpr codeBinding1 codeBinding2 strings, ci)
	convertDynamics _ _ _ (ABCCodeExpr strings bool) ci
		= (ABCCodeExpr strings bool, ci)
	convertDynamics cinp bound_vars default_expr (MatchExpr opt_symb symb expression) ci
		# (expression,ci) = convertDynamics cinp bound_vars default_expr expression ci
		= (MatchExpr opt_symb symb expression, ci)
399
400
401
/* Sjaak ... */
	convertDynamics cinp bound_vars default_expr  (DynamicExpr {dyn_expr, dyn_info_ptr, dyn_type_code}) ci=:{ci_symb_ident}
		#  (dyn_expr,      ci) 			= convertDynamics cinp bound_vars default_expr dyn_expr ci
402
403
404
		   (_,dyn_type_code, _, _, ci)	= convertTypecode2 cinp dyn_type_code False [] [] {ci & ci_module_id = No}
		# (dyn_type_code,ci)
			= build_type_identification dyn_type_code ci
405
406
407
408
409
410
		= (App {	app_symb		= ci_symb_ident,
					app_args 		= [dyn_expr, dyn_type_code],
					app_info_ptr	= nilPtr }, ci)

/* ... Sjaak  */
/* WAS ...
411
412
	convertDynamics cinp bound_vars default_expr  (DynamicExpr {dyn_expr, dyn_info_ptr, dyn_uni_vars, dyn_type_code}) ci=:{ci_symb_ident}
		# (let_binds,     ci) 	= createVariables dyn_uni_vars [] ci
413
		  (dyn_expr,      ci) 	= convertDynamics cinp bound_vars default_expr dyn_expr ci
414
		  (_,dyn_type_code,_,_,ci) = convertTypecode2 cinp dyn_type_code False [] [] ci
Ronny Wichers Schreur's avatar
Ronny Wichers Schreur committed
415
		= case let_binds of
416
			[]	-> (App {	app_symb		= ci_symb_ident, //USE_TUPLES twoTuple_symb ci_symb_ident, //twoTuple_symb,
Ronny Wichers Schreur's avatar
Ronny Wichers Schreur committed
417
418
							app_args 		= [dyn_expr, dyn_type_code],
							app_info_ptr	= nilPtr }, ci)
419
420
/* Sjaak */
			_ 	#  (let_info_ptr,  ci) = let_ptr (length let_binds) ci
Sjaak Smetsers's avatar
Sjaak Smetsers committed
421
422
				-> ( Let {	let_strict_binds	= [],
							let_lazy_binds		= let_binds,
423
							let_expr			= App {	app_symb		= ci_symb_ident, //USE_TUPLES twoTuple_symb ci_symb_ident,
Sjaak Smetsers's avatar
Sjaak Smetsers committed
424
425
														app_args 		= [dyn_expr, dyn_type_code],
														app_info_ptr	= nilPtr },
426
							let_info_ptr		= let_info_ptr,
427
							let_expr_position	= NoPos}, ci) 
428
*/
Ronny Wichers Schreur's avatar
Ronny Wichers Schreur committed
429
	convertDynamics cinp bound_vars default_expr (TypeCodeExpression type_code) ci
430
		= abort "convertDynamics cinp bound_vars default_expr (TypeCodeExpression" //convertTypecode cinp type_code ci
Ronny Wichers Schreur's avatar
Ronny Wichers Schreur committed
431
432
433
434
435
	convertDynamics cinp bound_vars default_expr EE ci
		= (EE, ci)
	convertDynamics cinp bound_vars default_expr expression ci
		= abort "unexpected value in convertDynamics: 'convertDynamics.Expression'"

436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
// identification of types generated by the compiler. If there is no TypeConsSymbol, then
// no identification is necessary.
build_type_identification dyn_type_code ci=:{ci_module_id=No}
	= (dyn_type_code,ci)
build_type_identification dyn_type_code ci=:{ci_module_id=Yes let_bind}
	# (let_info_ptr,  ci)	= let_ptr 1 ci
	# letje
		= Let {	let_strict_binds	= [],
				let_lazy_binds		= [let_bind],
				let_expr			= dyn_type_code,
				let_info_ptr		= let_info_ptr,
				let_expr_position	= NoPos
		}
	= (letje,ci)
	
451
//convertTypecode ::  !ConversionInput TypeCodeExpression !*ConversionInfo  -> (Expression,!*ConversionInfo)
Martijn Vervoort's avatar
Martijn Vervoort committed
452
453
454
455
456
/*
	replace all references in a type code expression which refer to an argument i.e. the argument contains a
	type to their placeholders. Return is a list of (placeholder,argument) list. Each tuple is used later as
	arguments to the coerce relation. This should be optional
	
457

Martijn Vervoort's avatar
Martijn Vervoort committed
458
*/
459
460
461
462

/* Sjaak ... */
convertTypecode2 cinp (TCE_UniType uni_vars type_code) replace_tc_args binds placeholders_and_tc_args ci
		# (let_binds,     ci) 	= createVariables uni_vars [] ci
463
		  (let_info_ptr,  ci)	= let_ptr (length let_binds) ci
464
465
466
467
468
469
470
471
		  (e, type_code_expr, binds, placeholders_and_tc_args, ci)	= convertTypecode2 cinp type_code False [] [] ci
		= (e, Let {	let_strict_binds	= [],
					let_lazy_binds		= let_binds,
					let_expr			= type_code_expr,
					let_info_ptr		= let_info_ptr,
					let_expr_position	= NoPos}, binds, placeholders_and_tc_args, ci) 
/* ... Sjaak */

Martijn Vervoort's avatar
Martijn Vervoort committed
472
// ci_placeholders_and_tc_args
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
convertTypecode2 cinp=:{cinp_st_args} t=:(TCE_Var var_info_ptr) replace_tc_args binds placeholders_and_tc_args ci
	#! cinp_st_args
		= filter (\{fv_info_ptr} -> fv_info_ptr == var_info_ptr) cinp_st_args
	| isEmpty cinp_st_args
		#! (e,binds,placeholders_and_tc_args,ci)
			= convertTypecode cinp t replace_tc_args binds placeholders_and_tc_args ci
		= (False,e,binds,placeholders_and_tc_args,ci)
		
		/*
		** the TCE_VAR is a TC argument and it is not part of a larger type expression. It
		** later suffices to generate a coerce instead of an application. This is an 
		** optimization.
		*/
		= (True,Var {var_name = a_ij_var_name, var_info_ptr = var_info_ptr, var_expr_ptr = nilPtr},binds,placeholders_and_tc_args,ci)

convertTypecode2 cinp=:{cinp_st_args} t=:(TCE_TypeTerm var_info_ptr) replace_tc_args binds placeholders_and_tc_args ci
Martijn Vervoort's avatar
Martijn Vervoort committed
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
	#! cinp_st_args
		= filter (\{fv_info_ptr} -> fv_info_ptr == var_info_ptr) cinp_st_args
	| isEmpty cinp_st_args
		#! (e,binds,placeholders_and_tc_args,ci)
			= convertTypecode cinp t replace_tc_args binds placeholders_and_tc_args ci
		= (False,e,binds,placeholders_and_tc_args,ci)
		
		/*
		** the TCE_VAR is a TC argument and it is not part of a larger type expression. It
		** later suffices to generate a coerce instead of an application. This is an 
		** optimization.
		*/
		= (True,Var {var_name = a_ij_var_name, var_info_ptr = var_info_ptr, var_expr_ptr = nilPtr},binds,placeholders_and_tc_args,ci)

//		= convertTypecode2 cinp t replace_tc_args binds placeholders_and_tc_args ci
504
505
506
507
508
509

convertTypecode2 cinp t replace_tc_args binds placeholders_and_tc_args ci
	#! (e,binds,placeholders_and_tc_args,ci)
		= convertTypecode cinp t replace_tc_args binds placeholders_and_tc_args ci
	= (False,e,binds,placeholders_and_tc_args,ci)

Martijn Vervoort's avatar
Martijn Vervoort committed
510
511
convertTypecode cinp TCE_Empty replace_tc_args binds placeholders_and_tc_args ci 
	= (EE,binds,placeholders_and_tc_args,ci)
Ronny Wichers Schreur's avatar
Ronny Wichers Schreur committed
512

513
convertTypecode cinp=:{cinp_st_args} (TCE_Var var_info_ptr) replace_tc_args binds placeholders_and_tc_args ci=:{ci_placeholders_and_tc_args,ci_var_heap}
Martijn Vervoort's avatar
Martijn Vervoort committed
514
515
	| not replace_tc_args
		= (Var {var_name = a_ij_var_name, var_info_ptr = var_info_ptr, var_expr_ptr = nilPtr},binds,placeholders_and_tc_args, ci)
Ronny Wichers Schreur's avatar
Ronny Wichers Schreur committed
516

Martijn Vervoort's avatar
Martijn Vervoort committed
517
518
519
520
	// check if tc_arg has already been replaced by a placeholder
	#! ci_placeholder_and_tc_arg
		= filter (\(_,tc_args_ptr) -> tc_args_ptr == var_info_ptr) ci_placeholders_and_tc_args
	| not (isEmpty ci_placeholder_and_tc_arg)
521
522
523
524
525
526
527
528
529
530
		// an tc-arg has been found, add to the list of indirections to be restored and replace it by its placeholder

		#! placeholder_var 
			= (fst (hd ci_placeholder_and_tc_arg));
		#! ci_var_heap
			= adjust_ref_count placeholder_var.var_info_ptr ci.ci_var_heap
		= (Var {var_name = v_tc_placeholder_ident, var_info_ptr = placeholder_var.var_info_ptr, var_expr_ptr = nilPtr},binds,
				[(placeholder_var/*.var_info_ptr*/,var_info_ptr):placeholders_and_tc_args],{ci & ci_var_heap = ci_var_heap} );
				//placeholders_and_tc_args, ci)
				
Martijn Vervoort's avatar
Martijn Vervoort committed
531
		= (Var {var_name = a_ij_var_name, var_info_ptr = var_info_ptr, var_expr_ptr = nilPtr},binds,placeholders_and_tc_args, ci)
532
533
534
535
where
	adjust_ref_count var_info_ptr var_heap
		# (VI_Indirection ref_count, var_heap) = readPtr var_info_ptr var_heap
		= var_heap <:= (var_info_ptr, VI_Indirection (inc ref_count))
Martijn Vervoort's avatar
Martijn Vervoort committed
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550

// 1st component of tuple is true iff:
// 1. The type is a TCE_Var or TCE_TypeTerm
// 2. It is also a argument of the function
// Thus a tc argument variable.
// This forms a special case: instead of an unify, a coerce can be generated
convertTypecode cinp (TCE_TypeTerm var_info_ptr) replace_tc_args binds placeholders_and_tc_args ci
	/*
	** TCE_Var and TCE_TypeTerm are not equivalent. A TCE_TypeTerm is used for an argument which contains
	** a type representation. A TCE_Var is an existential quantified type variable. In previous phases no
	** clear distinction is made. It should be possible to generate the proper type code expression for
	** these two but it would involve changing a lot of small things. 
	*/
	= convertTypecode cinp (TCE_Var var_info_ptr) replace_tc_args binds placeholders_and_tc_args ci

551
552
convertTypecode cinp (TCE_Constructor index typecode_exprs) replace_tc_args binds placeholders_and_tc_args ci=:{ci_internal_type_id}
	# (typecons_symb,  ci) 									=  getSymbol PD_TypeConsSymbol SK_Constructor (USE_DummyModuleName 3 2) ci
Martijn Vervoort's avatar
Martijn Vervoort committed
553
554
	  constructor											= get_constructor cinp.cinp_glob_type_inst index
	  (typecode_exprs,binds,placeholders_and_tc_args,ci)	= convertTypecodes cinp typecode_exprs replace_tc_args binds placeholders_and_tc_args ci
555
556
	# (ci_internal_type_id,ci)
		= get_module_id ci
557
	= (App {app_symb		= typecons_symb,
558
			app_args 		= USE_DummyModuleName [constructor , ci_internal_type_id, typecode_exprs] [constructor , typecode_exprs] ,
Martijn Vervoort's avatar
Martijn Vervoort committed
559
			app_info_ptr	= nilPtr},binds,placeholders_and_tc_args,ci)
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
where
	get_module_id ci=:{ci_module_id=Yes {lb_dst}}
		= (Var (freeVarToVar lb_dst),ci)

	get_module_id ci
		# (dst=:{var_info_ptr},ci)
			= newVariable "module_id" VI_Empty ci
		# dst_fv
			= varToFreeVar dst 1

		# let_bind
			= { lb_src = ci_internal_type_id
			,	lb_dst = dst_fv
			,	lb_position = NoPos
			}
		# ci
			= { ci & 
				ci_new_variables	= [ dst_fv : ci.ci_new_variables ]
			,	ci_module_id		= Yes let_bind
			}
		= (Var dst,ci)
581

Martijn Vervoort's avatar
Martijn Vervoort committed
582
583
584
585
convertTypecode cinp (TCE_Selector selections var_info_ptr) replace_tc_args binds placeholders_and_tc_args ci
	#! (var,binds,placeholders_and_tc_args,ci)		
		= convertTypecode cinp (TCE_Var var_info_ptr) replace_tc_args binds placeholders_and_tc_args ci
	= (Selection No var selections,binds,placeholders_and_tc_args,ci)
586

Martijn Vervoort's avatar
Martijn Vervoort committed
587
588
//convertTypecodes :: !ConversionInput [TypeCodeExpression] !*ConversionInfo  -> (Expression,!*ConversionInfo)
convertTypecodes _ [] replace_tc_args binds placeholders_and_tc_args ci
589
590
591
	# (nil_symb, ci) = getSymbol PD_NilSymbol SK_Constructor 0 ci
	= (App {	app_symb		= nil_symb,
				app_args 		= [],
Martijn Vervoort's avatar
Martijn Vervoort committed
592
593
594
				app_info_ptr	= nilPtr},binds,placeholders_and_tc_args, ci)

convertTypecodes cinp [typecode_expr : typecode_exprs] replace_tc_args binds placeholders_and_tc_args ci
595
	# (cons_symb, ci) = getSymbol PD_ConsSymbol SK_Constructor 2 ci
Martijn Vervoort's avatar
Martijn Vervoort committed
596
597
	# (expr,binds,placeholders_and_tc_args, ci) = convertTypecode  cinp typecode_expr  replace_tc_args binds placeholders_and_tc_args ci
	# (exprs,binds,placeholders_and_tc_args,ci) = convertTypecodes cinp typecode_exprs replace_tc_args binds placeholders_and_tc_args ci
598
599
	= (App {	app_symb		= cons_symb,
				app_args 		= [expr , exprs],
Martijn Vervoort's avatar
Martijn Vervoort committed
600
				app_info_ptr	= nilPtr}, binds,placeholders_and_tc_args, ci)
601

Ronny Wichers Schreur's avatar
Ronny Wichers Schreur committed
602
603
604
605
606
607
608
determine_defaults :: (Optional Expression) DefaultExpression !*ConversionInfo -> (Optional Expression, DefaultExpression, !*ConversionInfo)
/***
determine_defaults :: case_default default_expr varheap -> (this_case_default, nested_case_default, var_heap)
	this_case_default =	IF this case has no default, but there is a surrounding default
						THEN that is now the default and its reference count must be increased.
						ELSE it keeps this default
	nested_case_default  = 	IF this case has no default
Martijn Vervoort's avatar
Martijn Vervoort committed
609
		 					THEN the default_expr remains default in the nested cases.
Ronny Wichers Schreur's avatar
Ronny Wichers Schreur committed
610
							ELSE nested cases get this default. This is semantically already the case, so nothing has to be changed.
Martijn Vervoort's avatar
Martijn Vervoort committed
611

Ronny Wichers Schreur's avatar
Ronny Wichers Schreur committed
612
***/
Martijn Vervoort's avatar
Martijn Vervoort committed
613
614
615
616



// the case itself has no default but it has a surrounding default
617
618
619
620
/*
	1st 	= default of current case
	2nd 	= directly surrounding default
*/
Ronny Wichers Schreur's avatar
Ronny Wichers Schreur committed
621
622
623
determine_defaults No default_expr=:(Yes (var=:{var_info_ptr}, indirection_var_list)) ci=:{ci_var_heap}
	#! var_info = sreadPtr var_info_ptr ci_var_heap
	# (expression, ci) = toExpression default_expr {ci & ci_var_heap = ci_var_heap}
624
	# expression
Martijn Vervoort's avatar
Martijn Vervoort committed
625
		= expression// ---> expression
Ronny Wichers Schreur's avatar
Ronny Wichers Schreur committed
626
627
628
629
630
631
632
633
634
635
636
637
	= case var_info of
		VI_Default ref_count
			-> (expression, default_expr, {ci & ci_var_heap = ci.ci_var_heap <:= (var_info_ptr, VI_Default (inc ref_count))} )
		_
			-> (expression, default_expr, ci )
determine_defaults case_default _ ci
	= (case_default, No, ci)


add_dynamic_bound_vars :: ![DynamicPattern] BoundVariables -> BoundVariables
add_dynamic_bound_vars [] bound_vars = bound_vars
add_dynamic_bound_vars [{dp_var, dp_type_patterns_vars} : patterns] bound_vars
638
	= add_dynamic_bound_vars patterns (foldSt bind_info_ptr dp_type_patterns_vars [ {tv_free_var = dp_var, tv_type = empty_attributed_type } : bound_vars ])
Ronny Wichers Schreur's avatar
Ronny Wichers Schreur committed
639
where
640
641
	bind_info_ptr var_info_ptr bound_vars
		= [{ tv_free_var = {fv_def_level = NotALevel, fv_name = a_ij_var_name, fv_info_ptr = var_info_ptr, fv_count = 0}, tv_type = empty_attributed_type } : bound_vars]
Ronny Wichers Schreur's avatar
Ronny Wichers Schreur committed
642

643
open_dynamic :: Expression !*ConversionInfo -> (OpenedDynamic, LetBind, !*ConversionInfo)
644
open_dynamic dynamic_expr ci=:{ci_sel_type_field, ci_sel_value_field}
Ronny Wichers Schreur's avatar
Ronny Wichers Schreur committed
645
646
	# (twotuple, ci) = getTupleSymbol 2 ci
	  (dynamicType_var, ci) = newVariable "dt" VI_Empty ci
647
	  dynamicType_fv = varToFreeVar dynamicType_var 1
648
649
650
651
//	  sel_type = Selection No dynamic_expr [RecordSelection type_defined_symbol sd_type_field_nr]
//	  sel_value = Selection No dynamic_expr [RecordSelection value_defined_symbol sd_value_field_nr]
	= (	{ opened_dynamic_expr = ci_sel_value_field dynamic_expr /*USE_TUPLES (TupleSelect twotuple 0 dynamic_expr) sel_value*/, opened_dynamic_type = Var dynamicType_var },
//  RecordSelection !(Global DefinedSymbol) !Int
652
// MW0	  	{ bind_src = TupleSelect twotuple 1 dynamic_expr, bind_dst = dynamicType_fv },
653
	  	{ lb_src = ci_sel_type_field dynamic_expr /*USE_TUPLES (TupleSelect twotuple 1 dynamic_expr) sel_type*/, lb_dst = dynamicType_fv, lb_position = NoPos },
654
	  	{ ci & ci_new_variables = [ dynamicType_fv : ci.ci_new_variables ]})
Ronny Wichers Schreur's avatar
Ronny Wichers Schreur committed
655
656
657
658
659
660
661
/**************************************************************************************************/

convertDynamicPatterns :: !ConversionInput !BoundVariables !Case *ConversionInfo -> (Expression, *ConversionInfo)
convertDynamicPatterns cinp bound_vars {case_guards = DynamicPatterns [], case_default} ci
	= case case_default of
		(Yes expr)	-> (expr, ci)
		No			-> abort "unexpected value in convertDynamics: 'convertDynamicPatterns'"
662
663
convertDynamicPatterns cinp=:{cinp_st_args} bound_vars {case_expr, case_guards = DynamicPatterns patterns, case_default, case_info_ptr} 
			ci=:{ci_placeholders_and_tc_args=old_ci_placeholders_and_tc_args,ci_generated_global_tc_placeholders}
Ronny Wichers Schreur's avatar
Ronny Wichers Schreur committed
664
	# (opened_dynamic, dt_bind, ci) = open_dynamic case_expr ci
665
	  (ind_0, ci) = newVariable "ind_0" (VI_Indirection 0) ci
666
	  (c_1,   ci) = newVariable "c_1!" (VI_Default 0) ci
Ronny Wichers Schreur's avatar
Ronny Wichers Schreur committed
667
668
      new_default = newDefault c_1 ind_0
      (result_type, ci) = getResultType case_info_ptr ci
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
    
    #! // TC PLACEHOLDERS...
  	  (tc_binds,(bound_vars,ci))
  	  	= case ci_generated_global_tc_placeholders of
  	  		True	-> ([],(bound_vars,ci))
  	  		_		
  	  				#! (tc_binds,(bound_vars,ci))
  	  					= mapSt f cinp_st_args (bound_vars,ci)
  	  				#! ci
  	  					= { ci & ci_generated_global_tc_placeholders = True}
  	  				-> (tc_binds,(bound_vars,ci))
      // ...TC PLACEHOLDERS

	#

684
685
// MW0      bound_vars = addToBoundVars (freeVarToVar dt_bind.bind_dst) empty_attributed_type (addToBoundVars ind_0 empty_attributed_type
      bound_vars = addToBoundVars (freeVarToVar dt_bind.lb_dst) empty_attributed_type (addToBoundVars ind_0 empty_attributed_type
Ronny Wichers Schreur's avatar
Ronny Wichers Schreur committed
686
      							  (addToBoundVars c_1 result_type (add_dynamic_bound_vars patterns bound_vars)))
687
688

																// c_1 ind_0
689
	  (binds, expr, ci) = convert_dynamic_pattern cinp bound_vars new_default 1 opened_dynamic result_type case_default patterns ci
690
691
692
693
	# ci
		= { ci & ci_placeholders_and_tc_args=old_ci_placeholders_and_tc_args}
	# (tc_binds,ci)
		= foldSt remove_non_used_arg tc_binds ([],ci) 
694
695
/* Sjaak */		
	  (let_info_ptr, ci) = let_ptr (length  binds + length tc_binds + 1) ci
696

697
698
699
// MW0	= (Let {let_strict_binds = [], let_lazy_binds = [ dt_bind : binds ] ++ tc_binds, let_expr = expr, let_info_ptr = let_info_ptr}, ci)
	= (Let {let_strict_binds = [], let_lazy_binds = [ dt_bind : binds ] ++ tc_binds, let_expr = expr,
			let_info_ptr = let_info_ptr, let_expr_position = NoPos }, ci)
700
where
701
702
703
// MW0	remove_non_used_arg :: (Bind Expression FreeVar) ([Bind Expression FreeVar],*ConversionInfo) -> ([Bind Expression FreeVar],*ConversionInfo)
	remove_non_used_arg :: LetBind ([LetBind],*ConversionInfo) -> ([LetBind],*ConversionInfo)
	remove_non_used_arg tc_bind=:{lb_dst={fv_info_ptr}} (l,ci=:{ci_var_heap})
704
705
706
		# (VI_Indirection ref_count, ci_var_heap) = readPtr fv_info_ptr ci_var_heap
		| ref_count > 0
			#! tc_bind
707
				= { tc_bind & lb_dst = { tc_bind.lb_dst & fv_count = ref_count} }
708
709
710
711
712
713
714
715
716
717
718
			= ([tc_bind:l],{ci & ci_var_heap = ci_var_heap})
			
			= (l,{ci & ci_var_heap = ci_var_heap})

	// too many new variables are created because also non-tc args are included; should be improved in the future
	f st_arg (bound_vars,ci=:{ci_placeholders_and_tc_args})
		// create placeholder variable for arg
		#! v
			= VI_Indirection 0
							
  		#! (placeholder_var, ci) 
Martijn Vervoort's avatar
Martijn Vervoort committed
719
			= newVariable v_tc_placeholder v ci //---> st_arg
720
721
722
723
724
725
726
727
728
729
730
731
732
		#! (bind,ci)
			= create_variable v_tc_placeholder_ident_global placeholder_var.var_info_ptr ci
		
		// associate newly create placeholder variable with its tc
		#! ci
			= { ci & 
				ci_placeholders_and_tc_args = [(placeholder_var,st_arg.fv_info_ptr):ci_placeholders_and_tc_args]
			}
			
		#! bound_vars2
			= addToBoundVars placeholder_var empty_attributed_type bound_vars
		= (bind,(bound_vars2,ci));
	where
733
734
// MW0		create_variable :: !Ident VarInfoPtr !*ConversionInfo -> (Bind Expression FreeVar, !*ConversionInfo)
		create_variable :: !Ident VarInfoPtr !*ConversionInfo -> (LetBind, !*ConversionInfo)
735
736
737
738
		create_variable var_name var_info_ptr ci
			# (placeholder_symb, ci) = getSymbol PD_variablePlaceholder SK_Constructor 3 ci
			  cyclic_var = {var_name = var_name, var_info_ptr = var_info_ptr, var_expr_ptr = nilPtr}	
			  cyclic_fv = varToFreeVar cyclic_var 1	
739
740
741
742
743
744
745
// MW0			= ({ bind_src = App {	app_symb = placeholder_symb,
			= ({ lb_src = App {	app_symb = placeholder_symb,
								app_args = [Var cyclic_var, Var cyclic_var],
								app_info_ptr = nilPtr },
// MW0				 bind_dst = varToFreeVar cyclic_var 1
				 lb_dst = varToFreeVar cyclic_var 1,
				 lb_position = NoPos
746
747
748
749
750
			   },
			   { ci & ci_new_variables = [ cyclic_fv : ci.ci_new_variables ]} /*ci*/)
			   
	add_coercions [] _ _ bound_vars dp_rhs ci
		= (bound_vars,dp_rhs,ci)
751
	add_coercions [({var_info_ptr=a_ij},a_ij_tc):rest] this_default q bound_vars dp_rhs ci=:{ci_module_id_symbol}
752
753
754
755
756
757
758
759
760
761
		// extra
		# a_ij_var = {var_name = a_ij_var_name, var_info_ptr = a_ij, var_expr_ptr = nilPtr}	
		# a_ij_tc_var = {var_name = a_aij_tc_var_name, var_info_ptr = a_ij_tc, var_expr_ptr = nilPtr}
		
		// indirections
		# (ind_i,   ci) = newVariable "ind_1" (VI_Indirection (if (isNo this_default) 0 1)) ci
		  (c_inc_i, ci) = newVariable "c_!" (VI_Indirection 1) ci
		  new_default = newDefault c_inc_i ind_i
		  
		#		
762
		  (coerce_symb, ci)		= getSymbol PD_coerce SK_Function (extended_unify_and_coerce 2 3) ci
763
		  (twotuple, ci) 		= getTupleSymbol 2 ci
764
//Sjaak		  (case_info_ptr, ci)	= case_ptr ci
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
		
		  (coerce_result_var, ci)	= newVariable "result" VI_Empty ci
		  coerce_result_fv 			= varToFreeVar coerce_result_var 1
		  (coerce_bool_var, ci)		= newVariable "coerce_bool" VI_Empty ci
		  coerce_bool_fv 			= varToFreeVar coerce_bool_var 1
		  
		# (let_binds, ci) 		= bind_indirection_var ind_i coerce_result_var twotuple ci
		
		  ind_i_fv = varToFreeVar ind_i 1
		  c_inc_i_fv = varToFreeVar c_inc_i 1
		  ci = { ci & ci_new_variables = [ c_inc_i_fv,ind_i_fv : ci.ci_new_variables ] }
		  		
		#! new_default2 = newDefault c_inc_i ind_i
		
		#  (default_expr, ci) 	
		  	= case (isNo this_default) of 
		  		False
		  			-> toExpression new_default2 ci
		  		True
		  			-> (No,ci)
		  			
		// extra
		# (bound_vars,new_dp_rhs,ci)
			= add_coercions rest (if (isNo this_default) No new_default2) q bound_vars dp_rhs ci 
		
		#! (opt_expr,ci)
			= toExpression this_default ci
792
793
			
		#! app_args2 = extended_unify_and_coerce [Var a_ij_var, Var a_ij_tc_var] [Var a_ij_var, Var a_ij_tc_var, ci_module_id_symbol ]
794
/* Sjaak ... */
795

796
		# let_lazy_binds		= (if (isNo this_default) [] [ {lb_src = opt opt_expr, lb_dst = c_inc_i_fv, lb_position = NoPos }]) ++ [
797
										  { lb_src = App { app_symb = coerce_symb,  app_args = app_args2,  app_info_ptr = nilPtr },
798
										   lb_dst = coerce_result_fv, lb_position = NoPos }
799
										   ,
800
										 { lb_src = /*USE_TUPLES (*/ TupleSelect twotuple 0 (Var coerce_result_var) /*) sel_type*/,
801
										   lb_dst = coerce_bool_fv, lb_position = NoPos } : let_binds
802
803
804
805
806
807
808
809
810
811
812
										]
		  (let_info_ptr, ci) 	= let_ptr (length let_lazy_binds) ci
		  (case_info_ptr, ci)	= bool_case_ptr ci
/* ... Sjaak */

		# let_expr
			= Let {
					let_strict_binds	= []
				,	let_lazy_binds		= let_lazy_binds
				,	let_expr =
							 Case {			case_expr 		= Var coerce_bool_var,
813
814
815
816
											case_guards		= BasicPatterns BT_Bool [{bp_value = BVB True, bp_expr = new_dp_rhs, bp_position = NoPos }],
											case_default	= default_expr,
											case_ident		= No,
											case_info_ptr	= case_info_ptr,
817
818
819
// RWS ...
											case_explicit	= False,
// ... RWS
820
821
											case_default_pos= NoPos } // MW4++
				,	let_info_ptr = let_info_ptr	
822
				,	let_expr_position = NoPos // MW0++
823
824
825
826
827
828
829
				}
		
		// dp_rhs
		= (bound_vars,let_expr,{ ci & ci_new_variables = [coerce_result_fv, coerce_bool_fv : ci.ci_new_variables]}) //let_expr,ci)	
	where 
		opt (Yes x)		= x
			
830
	convert_dynamic_pattern :: !ConversionInput !BoundVariables DefaultExpression Int OpenedDynamic AType (Optional Expression) ![DynamicPattern] *ConversionInfo
831
832
/// MW0		-> (Env Expression FreeVar, Expression, *ConversionInfo)
		-> ([LetBind], Expression, *ConversionInfo)
833
	convert_dynamic_pattern cinp bound_vars this_default pattern_number opened_dynamic result_type last_default
834
835
																			[{ dp_var, dp_type_patterns_vars, dp_type_code, dp_rhs } : patterns] ci=:{ci_module_id_symbol}
														
Martijn Vervoort's avatar
Martijn Vervoort committed
836
		# /***  The last case may not have a default  ***/
837
838
839
840
841
842
843

		  ind_var = getIndirectionVar this_default
	
	      this_default = if (isEmpty patterns && (isNo last_default)) No this_default
	
		  /***  convert the elements of this pattern  ***/

844
		  (a_ij_binds, ci)		= createVariables dp_type_patterns_vars [] ci
845
846
847
	 	  (generate_coerce,type_code,_,martijn, ci)	= convertTypecode2 cinp dp_type_code True /* should be changed to True for type dependent functions */  /* WAS: a_ij_binds*/ [] [] {ci & ci_module_id = No} // ci
		# (type_code,ci)
			= build_type_identification type_code ci
848
849
850
851
852
853
854
855
856
857
	
		// collect ...
	 	# (is_last_dynamic_pattern,dp_rhs) 
	 		= isLastDynamicPattern dp_rhs;
		# ci
			= foldSt add_tcs martijn ci
		// ... collect
			
	 	#	
	 	  // walks through the patterns of the next alternative
858
	 	  (dp_rhs, ci)			= convertDynamics cinp bound_vars this_default dp_rhs ci
859
860
861
862
863
864
865
866
	 	  	 		
		// collect ...
		#! (ci_old_used_tcs,ci)
			= ci!ci_used_tcs;
	 	# ci
	 		= { ci & ci_used_tcs = [] }
		// ... collect
			 		
Martijn Vervoort's avatar
Martijn Vervoort committed
867
		  /***  recursively convert the other patterns in the other alternatives ***/
868

869
	 	#!  (binds, ci)		= convert_other_patterns cinp bound_vars this_default pattern_number opened_dynamic result_type last_default patterns ci
870

871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893

		// collect ...
	 	# ci
	 		= { ci & ci_used_tcs = ci_old_used_tcs }
		# ci_used_tcs
			= ci_old_used_tcs
	 	  
	 	#! (dp_rhs,ci)
	 		= case ((is_last_dynamic_pattern) /*&& (not generate_coerce)*/) of
	 			True
	 				// last dynamic pattern of the group of dynamic pattern so coercions must be generated.
	 				 #! (ci_placeholders_and_tc_args,ci)
	 					= ci!ci_placeholders_and_tc_args
	 				
	 				#! used_ci_placeholders_and_tc_args
	 					= filter (\(_,ci_placeholders_and_tc_arg) -> isMember ci_placeholders_and_tc_arg ci_used_tcs) ci_placeholders_and_tc_args
					#! (bound_vars,dp_rhs,ci)
						= add_coercions used_ci_placeholders_and_tc_args this_default binds bound_vars dp_rhs ci
	 				-> (dp_rhs,ci)
	 			False
	 				-> (dp_rhs,ci)
		// ... collect
		#
894
		  /***  generate the expression  ***/
895
	 	  (unify_symb, ci) 		= getSymbol (if generate_coerce PD_coerce PD_unify ) SK_Function (extended_unify_and_coerce 2 3) /*3 was 2 */ ci
896
		  (twotuple, ci) 		= getTupleSymbol 2 ci
897
//Sjaak		  (case_info_ptr, ci)	= case_ptr ci
898
		  (default_expr, ci) 	= toExpression this_default ci
Martijn Vervoort's avatar
Martijn Vervoort committed
899
900
901
		  
		  // was coercions
		  
902
903
		  (unify_result_var, ci)	= newVariable "result" VI_Empty ci
		  unify_result_fv 			= varToFreeVar unify_result_var 1
904
		  (unify_bool_var, ci)		= newVariable (if generate_coerce "coerce_bool" "unify_bool") VI_Empty ci
905
906
		  unify_bool_fv 			= varToFreeVar unify_bool_var 1

Sjaak Smetsers's avatar
bug fix    
Sjaak Smetsers committed
907
908
		  (let_binds, ci) 		= bind_indirection_var ind_var unify_result_var twotuple ci
		  a_ij_binds			= add_x_i_bind opened_dynamic.opened_dynamic_expr dp_var a_ij_binds
909
		  
Martijn Vervoort's avatar
Martijn Vervoort committed
910
//		  sel_type	= Selection No (Var unify_result_var) [RecordSelection type_defined_symbol sd_type_field_nr]
911

912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931

/*
// TIJDELIJK...

		# (ci=:{ci_predef_symb})
			= ci;
		# ({pds_module, pds_def, pds_ident}, ci_predef_symb)	= ci_predef_symb![PD_ModuleConsSymbol]
		# module_symb1	= { symb_name = pds_ident, symb_kind = SK_Constructor { glob_module = pds_module, glob_object = pds_def}, symb_arity = 0 }
		# ci
			= { ci & ci_predef_symb = ci_predef_symb };

		# module_symb = 
			{	app_symb 		= module_symb1
			,	app_args 		= []
			,	app_info_ptr	= nilPtr
			}
		# module_symb =
			App module_symb
		// ...TIJDELIJK
*/
932
/* Sjaak ... */
933
		  (let_info_ptr, ci) 	= let_ptr (2 + length let_binds) ci
934
935
		  (case_info_ptr, ci)	= bool_case_ptr ci
/* ... Sjaak */
936
937
938

		  app_args2 = extended_unify_and_coerce [opened_dynamic.opened_dynamic_type, type_code] [opened_dynamic.opened_dynamic_type, type_code, ci_module_id_symbol ]
		  
Sjaak Smetsers's avatar
Sjaak Smetsers committed
939
		  let_expr = Let {	let_strict_binds = [],
940
		  					let_lazy_binds = [{ lb_src = App { app_symb = unify_symb,  app_args = app_args2,  app_info_ptr = nilPtr },
941
		  								   lb_dst = unify_result_fv, lb_position = NoPos },
942
		  								 { lb_src = /*USE_TUPLES (*/ TupleSelect twotuple 0 (Var unify_result_var) /*) sel_type*/,
943
		  								   lb_dst = unify_bool_fv, lb_position = NoPos } : let_binds
944
945
		  								],
		  					let_expr = Case {	case_expr 		= Var unify_bool_var,
946
												case_guards		= BasicPatterns BT_Bool [{bp_value = BVB True, bp_expr = dp_rhs, bp_position = NoPos }],
947
948
												case_default	= default_expr,
												case_ident		= No,
949
												case_info_ptr	= case_info_ptr,
950
951
952
// RWS ...
												case_explicit	= False,
// ... RWS
953
												case_default_pos= NoPos }, // MW4++
954
955
		  					let_info_ptr = let_info_ptr,
		  					let_expr_position = NoPos }
Martijn Vervoort's avatar
Martijn Vervoort committed
956
		  					
Sjaak Smetsers's avatar
bug fix    
Sjaak Smetsers committed
957
		= (a_ij_binds ++ binds,  let_expr,  { ci & ci_new_variables = [unify_result_fv, unify_bool_fv : ci.ci_new_variables]})
958
	where
959
960
// MW0		add_x_i_bind bind_src bind_dst=:{fv_count} binds
		add_x_i_bind lb_src lb_dst=:{fv_count} binds
Sjaak Smetsers's avatar
bug fix    
Sjaak Smetsers committed
961
			| fv_count > 0
962
963
// MW0				= [ { bind_src = bind_src, bind_dst = bind_dst } : binds ]
				= [ { lb_src = lb_src, lb_dst = lb_dst, lb_position = NoPos } : binds ]
Sjaak Smetsers's avatar
bug fix    
Sjaak Smetsers committed
964
				= binds
965
966
967
968
969
970
971
972
973
974
975
				
		isLastDynamicPattern dp_rhs=:(Case keesje=:{case_guards=DynamicPatterns _})
			= (False,dp_rhs);
		
		isLastDynamicPattern dp_rhs
			= (True,dp_rhs); 
		
		add_tcs (_,tc) ci=:{ci_used_tcs}
			| isMember tc ci_used_tcs
				= ci;
				= {ci & ci_used_tcs = [tc:ci_used_tcs]}
Sjaak Smetsers's avatar
bug fix    
Sjaak Smetsers committed
976

Martijn Vervoort's avatar
Martijn Vervoort committed
977
	// other alternatives
978
	convert_other_patterns :: ConversionInput BoundVariables DefaultExpression Int OpenedDynamic AType !(Optional Expression) ![DynamicPattern] !*ConversionInfo
979
980
// MW0			-> (Env Expression FreeVar, *ConversionInfo)
			-> ([LetBind], *ConversionInfo)
981
	convert_other_patterns _ _ _ _ _ _  No  []  ci
Martijn Vervoort's avatar
Martijn Vervoort committed
982
		// no default and no alternatives left
983
		= ([], ci)
984
985
		
//	The last_default is the default used when there are no pattern left
986
	convert_other_patterns cinp bound_vars this_default _ _ result_type (Yes last_default_expr) [] ci
Martijn Vervoort's avatar
Martijn Vervoort committed
987
		// default without alternatives left
988
		# c_i = getVariable1 this_default
989
990
		  (c_bind, ci) = generateBinding cinp bound_vars c_i last_default_expr result_type ci
		= ([c_bind], ci)
991

992
993
994
995
996
997
	convert_other_patterns cinp bound_vars this_default pattern_number opened_dynamic result_type last_default patterns ci
		# (ind_i,   ci) = newVariable ("ind_"+++toString (pattern_number)) (VI_Indirection 0) ci
		  (c_inc_i, ci) = newVariable ("c_"+++toString (inc pattern_number)) (VI_Default 0) ci
	      new_default = newDefault c_inc_i ind_i
	      bound_vars = addToBoundVars ind_i empty_attributed_type (addToBoundVars c_inc_i result_type bound_vars)
	 	  (binds, expr, ci) = convert_dynamic_pattern cinp bound_vars new_default (inc pattern_number) opened_dynamic result_type last_default patterns ci
998
		  c_i = getVariable2 this_default
Martijn Vervoort's avatar
Martijn Vervoort committed
999
		  (c_bind, ci) = generateBinding cinp bound_vars c_i expr result_type ci
1000
	     = ([c_bind: binds], ci) 
For faster browsing, not all history is shown. View entire blame