transform.icl 129 KB
Newer Older
Ronny Wichers Schreur's avatar
Ronny Wichers Schreur committed
1
2
implementation module transform

3
import syntax, check, StdCompare, utilities, mergecases; //, RWSDebug
Ronny Wichers Schreur's avatar
Ronny Wichers Schreur committed
4
5
6

::	LiftState =
	{	ls_var_heap		:: !.VarHeap
Sjaak Smetsers's avatar
Sjaak Smetsers committed
7
	,	ls_x 			:: !.LiftStateX
Ronny Wichers Schreur's avatar
Ronny Wichers Schreur committed
8
9
	,	ls_expr_heap	:: !.ExpressionHeap
	}
10

11
12
::	LiftStateX = {
		x_fun_defs :: !.{#FunDef},
13
		x_macro_defs :: !.{#.{#FunDef}},
14
15
16
		x_main_dcl_module_n :: !Int
	}

Ronny Wichers Schreur's avatar
Ronny Wichers Schreur committed
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
class lift a :: !a !*LiftState -> (!a, !*LiftState)

instance lift [a] | lift a
where
	lift l ls = mapSt lift l ls

instance lift (a,b) | lift a & lift b
where
	lift t ls = app2St (lift,lift) t ls

instance lift (Optional a) | lift a
where
	lift (Yes x) ls
		# (x, ls) = lift x ls
		= (Yes x, ls)
	lift no ls
		= (no, ls)
	
35
36
37
38
39
40
instance lift CheckedAlternative
where
	lift ca=:{ca_rhs} ls
		# (ca_rhs, ls) = lift ca_rhs ls
		= ({ ca & ca_rhs = ca_rhs }, ls)
	
Ronny Wichers Schreur's avatar
Ronny Wichers Schreur committed
41
42
instance lift Expression
where
43
	lift (FreeVar {fv_ident,fv_info_ptr}) ls=:{ls_var_heap}
Sjaak Smetsers's avatar
Sjaak Smetsers committed
44
45
		# (var_info, ls_var_heap) = readPtr fv_info_ptr ls_var_heap
		  ls = { ls & ls_var_heap = ls_var_heap }
Ronny Wichers Schreur's avatar
Ronny Wichers Schreur committed
46
47
48
		= case var_info of
			 VI_LiftedVariable var_info_ptr
			 	# (var_expr_ptr, ls_expr_heap) = newPtr EI_Empty ls.ls_expr_heap
49
			 	-> (Var { var_ident = fv_ident, var_info_ptr = var_info_ptr, var_expr_ptr = var_expr_ptr }, { ls & ls_expr_heap = ls_expr_heap})
Ronny Wichers Schreur's avatar
Ronny Wichers Schreur committed
50
51
			 _
			 	# (var_expr_ptr, ls_expr_heap) = newPtr EI_Empty ls.ls_expr_heap
52
			 	-> (Var { var_ident = fv_ident, var_info_ptr = fv_info_ptr, var_expr_ptr = var_expr_ptr }, { ls & ls_expr_heap = ls_expr_heap})
Ronny Wichers Schreur's avatar
Ronny Wichers Schreur committed
53
54
55
56
57
58
	lift (App app) ls
		# (app, ls) = lift app ls
		= (App app, ls)
	lift (expr @ exprs) ls
		# ((expr,exprs), ls) = lift (expr,exprs) ls
		= (expr @ exprs, ls)
Sjaak Smetsers's avatar
Sjaak Smetsers committed
59
60
61
62
63
	lift (Let lad=:{let_strict_binds, let_lazy_binds, let_expr}) ls
		# (let_strict_binds, ls) = lift let_strict_binds ls
		  (let_lazy_binds, ls) = lift let_lazy_binds ls
		  (let_expr, ls) = lift let_expr ls
		= (Let {lad & let_strict_binds = let_strict_binds, let_lazy_binds = let_lazy_binds, let_expr = let_expr}, ls)
Ronny Wichers Schreur's avatar
Ronny Wichers Schreur committed
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
	lift (Case case_expr) ls
		# (case_expr, ls) = lift case_expr ls
		= (Case case_expr, ls)
	lift (Selection is_unique expr selectors) ls
		# (selectors, ls) = lift selectors ls
		  (expr, ls) = lift expr ls
		= (Selection is_unique expr selectors, ls)
	lift (Update expr1 selectors expr2) ls
		# (selectors, ls) = lift selectors ls
		  (expr1, ls) = lift expr1 ls
		  (expr2, ls) = lift expr2 ls
		= (Update expr1 selectors expr2, ls)
	lift (RecordUpdate cons_symbol expression expressions) ls
		# (expression, ls) = lift expression ls
		  (expressions, ls) = lift expressions ls
		= (RecordUpdate cons_symbol expression expressions, ls)
	lift (TupleSelect symbol argn_nr expr) ls
		# (expr, ls) = lift expr ls
		= (TupleSelect symbol argn_nr expr, ls)
83
	lift (MatchExpr cons_ident expr) ls
Ronny Wichers Schreur's avatar
Ronny Wichers Schreur committed
84
		# (expr, ls) = lift expr ls
85
		= (MatchExpr cons_ident expr, ls)
86
87
88
	lift (DynamicExpr expr) ls
		# (expr, ls) = lift expr ls
		= (DynamicExpr expr, ls)
89
90
91
	lift (TypeSignature type_function expr) ls
		# (expr, ls) = lift expr ls
		= (TypeSignature type_function expr, ls)
Ronny Wichers Schreur's avatar
Ronny Wichers Schreur committed
92
93
94
95
96
97
98
99
100
101
102
103
104
	lift expr ls
		= (expr, ls)

instance lift Selection
where
	lift (ArraySelection array_select expr_ptr index_expr) ls
		# (index_expr, ls) = lift index_expr ls
		= (ArraySelection array_select expr_ptr index_expr, ls)
	lift record_selection ls
		= (record_selection, ls)

instance lift App
where
105
	lift app=:{app_symb = app_symbol=:{symb_kind = SK_Function {glob_object,glob_module}}, app_args} ls
106
		| glob_module == ls.ls_x.LiftStateX.x_main_dcl_module_n
107
			# (fun_def,ls) = ls!ls_x.x_fun_defs.[glob_object]
108
109
			= lift_function_app app fun_def.fun_info.fi_free_vars ls
			# (app_args, ls) = lift app_args ls
110
			= ({ app & app_args = app_args }, ls)
111
	lift app=:{app_symb = {symb_kind = SK_LocalMacroFunction glob_object},app_args} ls
112
		# (fun_def,ls) = ls!ls_x.x_fun_defs.[glob_object]
113
114
		= lift_function_app app fun_def.fun_info.fi_free_vars ls
	lift app=:{app_symb = {symb_kind = SK_LocalDclMacroFunction {glob_object,glob_module}}} ls
115
		# (fun_def,ls) = ls!ls_x.x_macro_defs.[glob_module,glob_object]
116
		= lift_function_app app fun_def.fun_info.fi_free_vars ls
Ronny Wichers Schreur's avatar
Ronny Wichers Schreur committed
117
118
119
120
	lift app=:{app_args} ls
		# (app_args, ls) = lift app_args ls
		= ({ app & app_args = app_args }, ls)

121
lift_function_app app=:{app_symb=app_symbol,app_args} [] ls
122
123
	# (app_args, ls) = lift app_args ls
	= ({ app & app_args = app_args }, ls)
124
lift_function_app app=:{app_args} fi_free_vars ls
125
126
	# (app_args, ls) = lift app_args ls
	# (app_args, ls_var_heap, ls_expr_heap) = add_free_variables_in_app fi_free_vars app_args ls.ls_var_heap ls.ls_expr_heap
127
	# app = { app & app_args = app_args }
128
129
130
131
132
	= (app,	{ ls & ls_var_heap = ls_var_heap, ls_expr_heap = ls_expr_heap })
where
	add_free_variables_in_app :: ![FreeVar] ![Expression] !*VarHeap !*ExpressionHeap -> (![Expression],!*VarHeap,!*ExpressionHeap)
	add_free_variables_in_app [] app_args var_heap expr_heap
		= (app_args, var_heap, expr_heap)
133
	add_free_variables_in_app [{fv_ident, fv_info_ptr} : free_vars] app_args var_heap expr_heap
134
		# (var_info,var_heap) = readPtr fv_info_ptr var_heap
135
136
137
		= case var_info of
			VI_LiftedVariable var_info_ptr
			 	# (var_expr_ptr, expr_heap) = newPtr EI_Empty expr_heap
138
				-> add_free_variables_in_app free_vars [Var { var_ident = fv_ident, var_info_ptr = var_info_ptr, var_expr_ptr = var_expr_ptr } : app_args]
139
140
141
						var_heap expr_heap
			_
			 	# (var_expr_ptr, expr_heap) = newPtr EI_Empty expr_heap
142
				-> add_free_variables_in_app free_vars [Var { var_ident = fv_ident, var_info_ptr = fv_info_ptr, var_expr_ptr = var_expr_ptr } : app_args]
143
						var_heap expr_heap
144

145
146
147
148
149
150
instance lift LetBind
where
	lift bind=:{lb_src} ls
		# (lb_src, ls) = lift lb_src ls
		= ({ bind & lb_src = lb_src }, ls)

Ronny Wichers Schreur's avatar
Ronny Wichers Schreur committed
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
instance lift (Bind a b) | lift a
where
	lift bind=:{bind_src} ls
		# (bind_src, ls) = lift bind_src ls
		= ({ bind & bind_src = bind_src }, ls)

instance lift Case
where
	lift kees=:{ case_expr,case_guards,case_default } ls
		# ((case_expr,(case_guards,case_default)), ls) = lift (case_expr,(case_guards,case_default)) ls
		= ({ kees & case_expr = case_expr,case_guards = case_guards, case_default = case_default }, ls)

instance lift CasePatterns
where
	lift (AlgebraicPatterns type patterns) ls
		# (patterns, ls) = lift patterns ls
		= (AlgebraicPatterns type patterns, ls)
	lift (BasicPatterns type patterns) ls
		# (patterns, ls) = lift patterns ls
		= (BasicPatterns type patterns, ls)
171
172
173
174
	lift (OverloadedListPatterns type decons_expr patterns) ls
		# (patterns, ls) = lift patterns ls
		# (decons_expr, ls) = lift decons_expr ls
		= (OverloadedListPatterns type decons_expr patterns, ls)
John van Groningen's avatar
John van Groningen committed
175
176
177
	lift (NewTypePatterns type patterns) ls
		# (patterns, ls) = lift patterns ls
		= (NewTypePatterns type patterns, ls)
Ronny Wichers Schreur's avatar
Ronny Wichers Schreur committed
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
	lift (DynamicPatterns patterns) ls
		# (patterns, ls) = lift patterns ls
		= (DynamicPatterns patterns, ls)

instance lift AlgebraicPattern
where
	lift pattern=:{ap_expr} ls
		# (ap_expr, ls) = lift ap_expr ls
		= ({ pattern & ap_expr = ap_expr }, ls)

instance lift BasicPattern
where
	lift pattern=:{bp_expr} ls
		# (bp_expr, ls) = lift bp_expr ls
		= ({ pattern & bp_expr = bp_expr }, ls)

instance lift DynamicPattern
where
	lift pattern=:{dp_rhs} ls
		# (dp_rhs, ls) = lift dp_rhs ls
		= ({ pattern & dp_rhs = dp_rhs }, ls)

200
201
202
203
204
205
instance lift DynamicExpr
where
	lift dyn=:{dyn_expr} ls
		# (dyn_expr, ls) = lift dyn_expr ls
		= ({ dyn & dyn_expr = dyn_expr}, ls)

206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
liftFunctions :: [FunctionOrMacroIndex] Int Int *{#FunDef} *{#*{#FunDef}} *(Heap VarInfo) *(Heap ExprInfo) -> .LiftState;
liftFunctions group group_index main_dcl_module_n fun_defs macro_defs var_heap expr_heap
	# (contains_free_vars, lifted_function_called, fun_defs,macro_defs)
			= foldSt (add_free_vars_of_non_recursive_calls_to_function group_index) group (False, False, fun_defs,macro_defs)
	| contains_free_vars
		# (fun_defs,macro_defs) = iterateSt (add_free_vars_of_recursive_calls_to_functions group_index group) (fun_defs,macro_defs)
		= lift_functions group {ls_x={x_fun_defs=fun_defs,x_macro_defs=macro_defs,x_main_dcl_module_n=main_dcl_module_n},ls_var_heap=var_heap,ls_expr_heap=expr_heap}
	| lifted_function_called
		= lift_functions group {ls_x={x_fun_defs=fun_defs,x_macro_defs=macro_defs,x_main_dcl_module_n=main_dcl_module_n},ls_var_heap=var_heap,ls_expr_heap=expr_heap}
		= {ls_x={x_fun_defs=fun_defs,x_macro_defs=macro_defs,x_main_dcl_module_n=main_dcl_module_n},ls_var_heap=var_heap, ls_expr_heap=expr_heap}
where
	add_free_vars_of_non_recursive_calls_to_function group_index (FunctionOrIclMacroIndex fun) (contains_free_vars, lifted_function_called, fun_defs,macro_defs)
		# (fun_def=:{fun_info}, fun_defs) = fun_defs![fun]
		  { fi_free_vars,fi_def_level,fi_calls } = fun_info
		  (lifted_function_called, fi_free_vars, fun_defs,macro_defs)
				= add_free_vars_of_non_recursive_calls fi_def_level group_index fi_calls lifted_function_called fi_free_vars fun_defs macro_defs
		= (contains_free_vars || not (isEmpty fi_free_vars), lifted_function_called, 
			{ fun_defs & [fun] = { fun_def & fun_info = { fun_info & fi_free_vars = fi_free_vars }}},macro_defs)
	add_free_vars_of_non_recursive_calls_to_function group_index (DclMacroIndex macro_module_index macro_index) (contains_free_vars, lifted_function_called, fun_defs,macro_defs)
		# (fun_def=:{fun_info}, macro_defs) = macro_defs![macro_module_index,macro_index]
		  { fi_free_vars,fi_def_level,fi_calls } = fun_info
		  (lifted_function_called, fi_free_vars, fun_defs,macro_defs)
		  		= add_free_vars_of_non_recursive_calls fi_def_level group_index fi_calls lifted_function_called fi_free_vars fun_defs macro_defs
		= (contains_free_vars || not (isEmpty fi_free_vars), lifted_function_called, 
			fun_defs,{ macro_defs & [macro_module_index,macro_index] = { fun_def & fun_info = { fun_info & fi_free_vars = fi_free_vars }}})

	add_free_vars_of_non_recursive_calls fi_def_level group_index fi_calls lifted_function_called fi_free_vars fun_defs macro_defs
		= foldSt (add_free_vars_of_non_recursive_call fi_def_level group_index) fi_calls (lifted_function_called, fi_free_vars, fun_defs,macro_defs)
	where
		add_free_vars_of_non_recursive_call fun_def_level group_index (FunCall fc_index _) (lifted_function_called, free_vars, fun_defs,macro_defs)
			# ({fun_info = {fi_free_vars,fi_group_index}}, fun_defs) = fun_defs![fc_index]
			| (if (fi_group_index>=NoIndex) (fi_group_index==group_index) (-2-fi_group_index==group_index)) || (isEmpty fi_free_vars)
				= (lifted_function_called, free_vars, fun_defs,macro_defs)
				# (free_vars_added, free_vars) = add_free_variables fun_def_level fi_free_vars (False, free_vars)
				= (True, free_vars, fun_defs,macro_defs)
		add_free_vars_of_non_recursive_call fun_def_level group_index (MacroCall macro_module_index fc_index _) (lifted_function_called, free_vars, fun_defs,macro_defs)
			# ({fun_info = {fi_free_vars,fi_group_index}}, macro_defs) = macro_defs![macro_module_index,fc_index]
			| (if (fi_group_index>=NoIndex) (fi_group_index==group_index) (-2-fi_group_index==group_index)) || (isEmpty fi_free_vars)
				= (lifted_function_called, free_vars, fun_defs,macro_defs)
				# (free_vars_added, free_vars) = add_free_variables fun_def_level fi_free_vars (False, free_vars)
				= (True, free_vars, fun_defs,macro_defs)
247
248
		add_free_vars_of_non_recursive_call fun_def_level group_index (DclFunCall _ _) (lifted_function_called, free_vars, fun_defs,macro_defs)
			= (lifted_function_called, free_vars, fun_defs,macro_defs)
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279

	add_free_vars_of_recursive_calls_to_functions group_index group (fun_defs,macro_defs)
		= foldSt (add_free_vars_of_recursive_calls_to_function group_index) group (False, (fun_defs,macro_defs))

	add_free_vars_of_recursive_calls_to_function group_index (FunctionOrIclMacroIndex fun) (free_vars_added, (fun_defs,macro_defs))
		# (fun_def=:{fun_info}, fun_defs) = fun_defs![fun]
		  { fi_free_vars,fi_def_level,fi_calls } = fun_info
		  (free_vars_added, fi_free_vars, fun_defs,macro_defs)
				= foldSt (add_free_vars_of_recursive_call fi_def_level group_index) fi_calls (free_vars_added, fi_free_vars, fun_defs,macro_defs)
		  fun_defs = { fun_defs & [fun] = { fun_def & fun_info = { fun_info & fi_free_vars = fi_free_vars }}}
		= (free_vars_added, (fun_defs,macro_defs))
	add_free_vars_of_recursive_calls_to_function group_index (DclMacroIndex module_index fun) (free_vars_added, (fun_defs,macro_defs))
		# (fun_def=:{fun_info}, macro_defs) = macro_defs![module_index,fun]
		  { fi_free_vars,fi_def_level,fi_calls } = fun_info
		  (free_vars_added, fi_free_vars, fun_defs,macro_defs)
				= foldSt (add_free_vars_of_recursive_call fi_def_level group_index) fi_calls (free_vars_added, fi_free_vars, fun_defs,macro_defs)
		  macro_defs = { macro_defs & [module_index,fun] = { fun_def & fun_info = { fun_info & fi_free_vars = fi_free_vars }}}
		= (free_vars_added, (fun_defs,macro_defs))

	add_free_vars_of_recursive_call fun_def_level group_index (FunCall fc_index _) (free_vars_added, free_vars, fun_defs,macro_defs)
		# ({fun_info = {fi_free_vars,fi_group_index}}, fun_defs) = fun_defs![fc_index]
		| if (fi_group_index>=NoIndex) (fi_group_index==group_index) (-2-fi_group_index==group_index)
			# (free_vars_added, free_vars) = add_free_variables fun_def_level fi_free_vars (free_vars_added, free_vars)
			= (free_vars_added, free_vars, fun_defs,macro_defs)
			= (free_vars_added, free_vars, fun_defs,macro_defs)
	add_free_vars_of_recursive_call fun_def_level group_index (MacroCall module_index fc_index _) (free_vars_added, free_vars, fun_defs,macro_defs)
		# ({fun_info = {fi_free_vars,fi_group_index}}, macro_defs) = macro_defs![module_index,fc_index]
		| if (fi_group_index>=NoIndex) (fi_group_index==group_index) (-2-fi_group_index==group_index)
			# (free_vars_added, free_vars) = add_free_variables fun_def_level fi_free_vars (free_vars_added, free_vars)
			= (free_vars_added, free_vars, fun_defs,macro_defs)
			= (free_vars_added, free_vars, fun_defs,macro_defs)
280
281
	add_free_vars_of_recursive_call fun_def_level group_index (DclFunCall _ _) (free_vars_added, free_vars, fun_defs,macro_defs)
		= (free_vars_added, free_vars, fun_defs,macro_defs)
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313

	add_free_variables fun_level new_vars (free_vars_added, free_vars)
		= add_free_global_variables (skip_local_variables fun_level new_vars) (free_vars_added, free_vars)
	where
		skip_local_variables level vars=:[{fv_def_level}:rest_vars]
			| fv_def_level > level
				= skip_local_variables level rest_vars
				= vars
		skip_local_variables _ []
			= []

		add_free_global_variables []  (free_vars_added, free_vars)
			= (free_vars_added, free_vars)
		add_free_global_variables free_vars (free_vars_added, [])
			= (True, free_vars)
		add_free_global_variables [var:vars] (free_vars_added, free_vars)
			# (free_var_added, free_vars) = newFreeVariable var free_vars
			= add_free_global_variables vars (free_var_added || free_vars_added, free_vars)

	lift_functions group lift_state
		= foldSt lift_function group lift_state
	where
		lift_function (FunctionOrIclMacroIndex fun) {ls_x=ls_x=:{x_fun_defs=fun_defs=:{[fun] = fun_def}}, ls_var_heap=var_heap, ls_expr_heap=expr_heap}
			# {fi_free_vars} = fun_def.fun_info
			  fun_lifted = length fi_free_vars
			  (PartitioningFunction {cb_args,cb_rhs} fun_number) = fun_def.fun_body
			  (cb_args, var_heap) = add_lifted_args fi_free_vars cb_args var_heap
			  (cb_rhs, {ls_x,ls_var_heap,ls_expr_heap}) = lift cb_rhs { ls_x={ls_x & x_fun_defs = fun_defs}, ls_var_heap = var_heap, ls_expr_heap = expr_heap }
			  ls_var_heap = remove_lifted_args fi_free_vars ls_var_heap
			  fun_defs = ls_x.x_fun_defs
			  fun_defs = { fun_defs & [fun] = { fun_def & fun_lifted = fun_lifted, fun_body = PartitioningFunction {cb_args = cb_args, cb_rhs = cb_rhs} fun_number}}
			= {ls_x={ls_x & x_fun_defs=fun_defs}, ls_var_heap=ls_var_heap, ls_expr_heap= ls_expr_heap}
314
//				 ---> ("lift_function", fun_def.fun_ident, fi_free_vars, cb_args, cb_rhs)
315
316
317
318
319
320
321
322
323
324
325
326
		lift_function (DclMacroIndex module_index fun) {ls_x=ls_x=:{x_macro_defs=macro_defs=:{[module_index,fun] = fun_def}}, ls_var_heap=var_heap, ls_expr_heap=expr_heap}
			# {fi_free_vars} = fun_def.fun_info
			  fun_lifted = length fi_free_vars
			  (PartitioningFunction {cb_args,cb_rhs} fun_number) = fun_def.fun_body
			  (cb_args, var_heap) = add_lifted_args fi_free_vars cb_args var_heap
			  (cb_rhs, {ls_x,ls_var_heap,ls_expr_heap}) = lift cb_rhs { ls_x={ls_x & x_macro_defs = macro_defs}, ls_var_heap = var_heap, ls_expr_heap = expr_heap }
			  ls_var_heap = remove_lifted_args fi_free_vars ls_var_heap
			  macro_defs = ls_x.x_macro_defs
			  macro_defs = { macro_defs & [module_index].[fun] = { fun_def & fun_lifted = fun_lifted, fun_body = PartitioningFunction {cb_args = cb_args, cb_rhs = cb_rhs} fun_number}}
			= {ls_x={ls_x & x_macro_defs=macro_defs}, ls_var_heap=ls_var_heap, ls_expr_heap= ls_expr_heap}

		remove_lifted_args vars var_heap
327
			= foldl (\var_heap {fv_ident,fv_info_ptr} -> writePtr fv_info_ptr VI_Empty var_heap) var_heap vars
328
	
329
		add_lifted_args [lifted_arg=:{fv_ident,fv_info_ptr} : lifted_args] args var_heap
330
331
332
333
334
335
			# (new_info_ptr, var_heap) = newPtr VI_Empty var_heap
			  args = [{ lifted_arg & fv_info_ptr = new_info_ptr } : args ]
			= add_lifted_args lifted_args args (writePtr fv_info_ptr (VI_LiftedVariable new_info_ptr) var_heap)
		add_lifted_args [] args var_heap
			= (args, var_heap)

336
unfoldVariable :: !BoundVar UnfoldInfo !*UnfoldState -> (!Expression, !*UnfoldState)
337
unfoldVariable var=:{var_ident,var_info_ptr} ui us
Sjaak Smetsers's avatar
Sjaak Smetsers committed
338
	# (var_info, us) = readVarInfo var_info_ptr us
339
	= case var_info of
Ronny Wichers Schreur's avatar
Ronny Wichers Schreur committed
340
341
		VI_Expression expr
			-> (expr, us)
342
		VI_Variable var_ident var_info_ptr
343
		 	# (var_expr_ptr, us_symbol_heap) = newPtr EI_Empty us.us_symbol_heap
344
345
346
347
348
			-> (Var {var_ident = var_ident, var_info_ptr = var_info_ptr, var_expr_ptr = var_expr_ptr}, { us & us_symbol_heap = us_symbol_heap})
		VI_Body fun_ident _ vars
			-> (App {	app_symb = fun_ident,
						app_args = [ Var { var_ident=fv_ident, var_info_ptr=fv_info_ptr, var_expr_ptr=nilPtr }
									\\ {fv_ident,fv_info_ptr}<-vars],
349
						app_info_ptr = nilPtr }, us)
350
351
352
		VI_Dictionary app_symb app_args class_type
			# (new_class_type, us_opt_type_heaps) = substitute_class_types class_type us.us_opt_type_heaps
			  (new_info_ptr, us_symbol_heap) = newPtr (EI_DictionaryType new_class_type) us.us_symbol_heap
353
354
355
			  app = App { app_symb = app_symb, app_args = app_args, app_info_ptr = new_info_ptr }
			  us = { us & us_opt_type_heaps = us_opt_type_heaps, us_symbol_heap = us_symbol_heap }
			-> unfold app ui us
Ronny Wichers Schreur's avatar
Ronny Wichers Schreur committed
356
357
		_
			-> (Var var, us)
358
  where
359
360
	substitute_class_types class_types No
		= (class_types, No)
361
	substitute_class_types class_types (Yes type_heaps)
362
		# (new_class_types, type_heaps) = substitute class_types type_heaps
363
364
365
		= (new_class_types, Yes type_heaps)

readVarInfo var_info_ptr us
Sjaak Smetsers's avatar
Sjaak Smetsers committed
366
367
	# (var_info, us_var_heap) = readPtr var_info_ptr us.us_var_heap
	  us = { us & us_var_heap = us_var_heap }
368
369
370
371
372
373
374
375
376
377
378
	= case var_info of
		VI_Extended _ original	-> (original, us)
		_						-> (var_info, us)

writeVarInfo :: VarInfoPtr VarInfo *VarHeap -> *VarHeap
writeVarInfo var_info_ptr new_var_info var_heap
	# (old_var_info, var_heap) = readPtr var_info_ptr var_heap
	= case old_var_info of
		VI_Extended extensions _	-> writePtr var_info_ptr (VI_Extended extensions new_var_info) var_heap
		_							-> writePtr var_info_ptr new_var_info var_heap

379
::	CopiedLocalFunction = {
380
		old_function_n :: !FunctionOrMacroIndex,
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
		new_function_n :: !Int
	}

::	CopiedLocalFunctions = {
		copied_local_functions :: [CopiedLocalFunction],
		used_copied_local_functions :: [CopiedLocalFunction],
		new_copied_local_functions :: [CopiedLocalFunction],
		next_local_function_n :: !Int
	}

::	UnfoldState =
	{	us_var_heap				:: !.VarHeap
	,	us_symbol_heap			:: !.ExpressionHeap
	,	us_opt_type_heaps		:: !.Optional .TypeHeaps,
		us_cleanup_info			:: ![ExprInfoPtr],
		us_local_macro_functions :: !Optional CopiedLocalFunctions
	}

::	UnfoldInfo =
400
	{	ui_handle_aci_free_vars	:: !AciFreeVarHandleMode
401
402
403
404
405
406
	}

:: AciFreeVarHandleMode = LeaveThem | RemoveThem | SubstituteThem

class unfold a :: !a !UnfoldInfo !*UnfoldState -> (!a, !*UnfoldState)

Ronny Wichers Schreur's avatar
Ronny Wichers Schreur committed
407
408
instance unfold Expression
where
409
	unfold (Var var) ui us
410
		= unfoldVariable var ui us
411
412
	unfold (App app) ui us
		# (app, us) = unfold app ui us
Ronny Wichers Schreur's avatar
Ronny Wichers Schreur committed
413
		= (App app, us)
414
415
	unfold (expr @ exprs) ui us
		# ((expr,exprs), us) = unfold (expr,exprs) ui us
Ronny Wichers Schreur's avatar
Ronny Wichers Schreur committed
416
		= (expr @ exprs, us)
417
418
	unfold (Let lad) ui us
		# (lad, us) = unfold lad ui us
Ronny Wichers Schreur's avatar
Ronny Wichers Schreur committed
419
		= (Let lad, us)
420
421
	unfold (Case case_expr) ui us
		# (case_expr, us) = unfold case_expr ui us
Ronny Wichers Schreur's avatar
Ronny Wichers Schreur committed
422
		= (Case case_expr, us)
423
424
	unfold (Selection is_unique expr selectors) ui us
		# ((expr, selectors), us) = unfold (expr, selectors) ui us
Ronny Wichers Schreur's avatar
Ronny Wichers Schreur committed
425
		= (Selection is_unique expr selectors, us)
426
427
	unfold (Update expr1 selectors expr2) ui us
		# (((expr1, expr2), selectors), us) = unfold ((expr1, expr2), selectors) ui us
Ronny Wichers Schreur's avatar
Ronny Wichers Schreur committed
428
		= (Update expr1 selectors expr2, us)
429
430
	unfold (RecordUpdate cons_symbol expression expressions) ui us
		# ((expression, expressions), us) = unfold (expression, expressions) ui us
Ronny Wichers Schreur's avatar
Ronny Wichers Schreur committed
431
		= (RecordUpdate cons_symbol expression expressions, us)
432
433
	unfold (TupleSelect symbol argn_nr expr) ui us
		# (expr, us) = unfold expr ui us
Ronny Wichers Schreur's avatar
Ronny Wichers Schreur committed
434
		= (TupleSelect symbol argn_nr expr, us)
435
	unfold (MatchExpr cons_ident expr) ui us
436
		# (expr, us) = unfold expr ui us
437
		= (MatchExpr cons_ident expr, us)
438
439
	unfold (DynamicExpr expr) ui us
		# (expr, us) = unfold expr ui us
Martin Wierich's avatar
Martin Wierich committed
440
		= (DynamicExpr expr, us)
441
442
443
	unfold (TypeSignature type_function expr) ui us
		# (expr, us) = unfold expr ui us
		= (TypeSignature type_function expr, us)
444
	unfold expr ui us
Ronny Wichers Schreur's avatar
Ronny Wichers Schreur committed
445
446
		= (expr, us)

Martin Wierich's avatar
Martin Wierich committed
447
448
instance unfold DynamicExpr
where
449
450
451
452
453
	unfold expr=:{dyn_expr, dyn_info_ptr} ui us=:{us_symbol_heap}
		# (dyn_info, us_symbol_heap) = readPtr dyn_info_ptr us_symbol_heap
		# (new_dyn_info_ptr, us_symbol_heap) = newPtr dyn_info us_symbol_heap
		# (dyn_expr, us) = unfold dyn_expr ui {us & us_symbol_heap=us_symbol_heap}
		= ({ expr & dyn_expr = dyn_expr, dyn_info_ptr = new_dyn_info_ptr }, us)
Martin Wierich's avatar
Martin Wierich committed
454

Ronny Wichers Schreur's avatar
Ronny Wichers Schreur committed
455
456
instance unfold Selection
where
457
	unfold (ArraySelection array_select expr_ptr index_expr) ui us=:{us_symbol_heap}
Sjaak Smetsers's avatar
Sjaak Smetsers committed
458
		# (new_ptr, us_symbol_heap) = newPtr EI_Empty us_symbol_heap
459
		  (index_expr, us) = unfold index_expr ui { us & us_symbol_heap = us_symbol_heap}
Sjaak Smetsers's avatar
Sjaak Smetsers committed
460
		= (ArraySelection array_select new_ptr index_expr, us)
461
	unfold (DictionarySelection var selectors expr_ptr index_expr) ui us=:{us_symbol_heap}
Sjaak Smetsers's avatar
Sjaak Smetsers committed
462
		# (new_ptr, us_symbol_heap) = newPtr EI_Empty us_symbol_heap
463
		  (index_expr, us) = unfold index_expr ui { us & us_symbol_heap = us_symbol_heap}
464
		  (var_expr, us) = unfoldVariable var ui us
Ronny Wichers Schreur's avatar
Ronny Wichers Schreur committed
465
466
467
		= case var_expr of 
			App {app_symb={symb_kind= SK_Constructor _ }, app_args}
				# [RecordSelection _ field_index:_] = selectors
468
469
				  (App { app_symb = {symb_ident, symb_kind = SK_Function array_select}}) =  app_args !! field_index
				-> (ArraySelection { array_select & glob_object = { ds_ident = symb_ident, ds_arity = 2, ds_index = array_select.glob_object}}
Sjaak Smetsers's avatar
Sjaak Smetsers committed
470
							new_ptr index_expr, us)
Ronny Wichers Schreur's avatar
Ronny Wichers Schreur committed
471
			Var var
Sjaak Smetsers's avatar
Sjaak Smetsers committed
472
				-> (DictionarySelection var selectors new_ptr index_expr, us)
473
474
	unfold record_selection ui us
		= (record_selection, us)
Ronny Wichers Schreur's avatar
Ronny Wichers Schreur committed
475
476
477

instance unfold FreeVar
where
478
	unfold fv=:{fv_info_ptr,fv_ident} ui us=:{us_var_heap}
Ronny Wichers Schreur's avatar
Ronny Wichers Schreur committed
479
		# (new_info_ptr, us_var_heap) = newPtr VI_Empty us_var_heap
480
		= ({ fv & fv_info_ptr = new_info_ptr }, { us & us_var_heap = writePtr fv_info_ptr (VI_Variable fv_ident new_info_ptr) us_var_heap })
481

Ronny Wichers Schreur's avatar
Ronny Wichers Schreur committed
482
483
instance unfold App
where
484
	unfold app=:{app_symb={symb_kind}, app_args, app_info_ptr} ui us
485
		= case symb_kind of
486
			SK_Function {glob_module,glob_object}
487
488
				-> unfold_function_app app ui us
			SK_IclMacro macro_index
489
				-> unfold_function_app app ui us
490
			SK_DclMacro {glob_module,glob_object}
491
				-> unfold_function_app app ui us
492
			SK_OverloadedFunction {glob_module,glob_object}
493
				-> unfold_function_app app ui us
Artem Alimarine's avatar
Artem Alimarine committed
494
495
			SK_Generic {glob_module,glob_object} kind
				-> unfold_function_app app ui us
496
			SK_LocalMacroFunction local_macro_function_n
497
498
499
				-> unfold_local_macro_function (FunctionOrIclMacroIndex local_macro_function_n)
			SK_LocalDclMacroFunction {glob_module,glob_object}
				-> unfold_local_macro_function (DclMacroIndex glob_module glob_object)
500
501
502
503
504
505
506
507
508
509
510
511
512
			SK_Constructor _
				| not (isNilPtr app_info_ptr)
					# (app_info, us_symbol_heap) = readPtr app_info_ptr us.us_symbol_heap
					  (new_app_info, us_opt_type_heaps) = substitute_EI_DictionaryType app_info us.us_opt_type_heaps
					  (new_info_ptr, us_symbol_heap) = newPtr new_app_info us_symbol_heap
					  us={ us & us_symbol_heap = us_symbol_heap, us_opt_type_heaps = us_opt_type_heaps }
					  (app_args, us) = unfold app_args ui us
					-> ({ app & app_args = app_args, app_info_ptr = new_info_ptr}, us) 
					# (app_args, us) = unfold app_args ui us
					-> ({ app & app_args = app_args}, us)
			_
				# (app_args, us) = unfold app_args ui us
				-> ({ app & app_args = app_args, app_info_ptr = nilPtr}, us) 
Ronny Wichers Schreur's avatar
Ronny Wichers Schreur committed
513
	where
514
515
516
517
518
		unfold_function_app app=:{app_args, app_info_ptr} ui us
			# (new_info_ptr, us_symbol_heap) = newPtr EI_Empty us.us_symbol_heap
			# us={ us & us_symbol_heap = us_symbol_heap }
			# (app_args, us) = unfold app_args ui us
			= ({ app & app_args = app_args, app_info_ptr = new_info_ptr}, us) 
Sjaak Smetsers's avatar
Sjaak Smetsers committed
519

520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
		unfold_local_macro_function local_macro_function_n
			# (us_local_macro_functions,us) = us!us_local_macro_functions
			= case us_local_macro_functions of
				No
					-> unfold_function_app app ui us
				uslocal_macro_functions=:(Yes local_macro_functions)
					# (new_local_macro_function_n,us_local_macro_functions) = determine_new_local_macro_function_n local_macro_function_n local_macro_functions
						with
							determine_new_local_macro_function_n local_macro_function_n local_macro_functions=:{copied_local_functions,used_copied_local_functions,new_copied_local_functions,next_local_function_n}
								# new_local_macro_function_n = search_new_local_macro_function_n used_copied_local_functions
								| new_local_macro_function_n>=0
									= (new_local_macro_function_n,us_local_macro_functions)
								# (new_local_macro_function_n,used_copied_local_functions) = search_new_local_macro_function_n_and_add_to_used_functions copied_local_functions used_copied_local_functions
								| new_local_macro_function_n>=0
									= (new_local_macro_function_n,Yes {local_macro_functions & used_copied_local_functions=used_copied_local_functions})
								# (new_local_macro_function_n,used_copied_local_functions) = search_new_local_macro_function_n_and_add_to_used_functions new_copied_local_functions used_copied_local_functions
								| new_local_macro_function_n>=0
									= (new_local_macro_function_n,Yes {local_macro_functions & used_copied_local_functions=used_copied_local_functions})
									# new_local_function = {old_function_n=local_macro_function_n,new_function_n=next_local_function_n}
									# new_copied_local_functions=new_copied_local_functions++[new_local_function]
									# us_local_macro_functions=Yes {copied_local_functions=copied_local_functions,
																	new_copied_local_functions=new_copied_local_functions,
																	used_copied_local_functions=[new_local_function:used_copied_local_functions],
																	next_local_function_n=next_local_function_n+1}
									= (next_local_function_n,us_local_macro_functions)
								where
									search_new_local_macro_function_n [{old_function_n,new_function_n}:local_functions]
										| local_macro_function_n==old_function_n
											= new_function_n
										 	= search_new_local_macro_function_n local_functions
									search_new_local_macro_function_n []
										= -1

									search_new_local_macro_function_n_and_add_to_used_functions [copied_local_function=:{old_function_n,new_function_n}:local_functions] used_copied_local_functions
										| local_macro_function_n==old_function_n
											= (new_function_n,[copied_local_function:used_copied_local_functions])
										 	= search_new_local_macro_function_n_and_add_to_used_functions local_functions used_copied_local_functions
									search_new_local_macro_function_n_and_add_to_used_functions [] used_copied_local_functions
										= (-1,used_copied_local_functions)
					# us={us & us_local_macro_functions=us_local_macro_functions}
					# app={app & app_symb.symb_kind=SK_LocalMacroFunction new_local_macro_function_n}
					-> unfold_function_app app ui us

563
		substitute_EI_DictionaryType (EI_DictionaryType class_type) (Yes type_heaps)
564
			# (new_class_type, type_heaps) = substitute class_type type_heaps
565
566
			= (EI_DictionaryType new_class_type, Yes type_heaps)
		substitute_EI_DictionaryType x opt_type_heaps
567
			= (x, opt_type_heaps)
Ronny Wichers Schreur's avatar
Ronny Wichers Schreur committed
568

569
570
instance unfold LetBind
where
571
572
	unfold bind=:{lb_src} ui us
		# (lb_src, us) = unfold lb_src ui us
573
574
		= ({ bind & lb_src = lb_src }, us)

Ronny Wichers Schreur's avatar
Ronny Wichers Schreur committed
575
576
instance unfold (Bind a b) | unfold a
where
577
578
	unfold bind=:{bind_src} ui us
		# (bind_src, us) = unfold bind_src ui us
Ronny Wichers Schreur's avatar
Ronny Wichers Schreur committed
579
580
581
582
		= ({ bind & bind_src = bind_src }, us)

instance unfold Case
where
583
	unfold kees=:{ case_expr,case_guards,case_default,case_info_ptr} ui us=:{us_cleanup_info}
584
585
586
		# (old_case_info, us_symbol_heap) = readPtr case_info_ptr us.us_symbol_heap
		  (new_case_info, us_opt_type_heaps) = substitute_let_or_case_type old_case_info us.us_opt_type_heaps
		  (new_info_ptr, us_symbol_heap) = newPtr new_case_info us_symbol_heap
587
588
589
		  us_cleanup_info = case old_case_info of
								EI_Extended _ _	-> [new_info_ptr:us_cleanup_info]
								_				-> us_cleanup_info
590
		  us = { us & us_symbol_heap = us_symbol_heap, us_opt_type_heaps = us_opt_type_heaps, us_cleanup_info=us_cleanup_info }
591
		  ((case_guards,case_default), us) = unfold (case_guards,case_default) ui us
592
593
594
		  (case_expr, us) = update_active_case_info_and_unfold case_expr new_info_ptr us
		= ({ kees & case_expr = case_expr,case_guards = case_guards, case_default = case_default, case_info_ptr =  new_info_ptr}, us)
	where
595
		update_active_case_info_and_unfold case_expr=:(Var {var_info_ptr}) case_info_ptr us
596
597
			# (case_info, us_symbol_heap) = readPtr case_info_ptr us.us_symbol_heap
			  us = { us & us_symbol_heap = us_symbol_heap }
598
599
			= case case_info of
				EI_Extended (EEI_ActiveCase aci=:{aci_free_vars}) ei
Sjaak Smetsers's avatar
Sjaak Smetsers committed
600
					# (new_aci_free_vars, us) = case ui.ui_handle_aci_free_vars of
601
602
603
604
605
606
													LeaveThem		-> (aci_free_vars, us)
													RemoveThem		-> (No, us)
													SubstituteThem	-> case aci_free_vars of
																		No		-> (No, us)
																		Yes fvs	# (fvs_subst, us) = mapSt unfoldBoundVar fvs us
																				-> (Yes fvs_subst, us)
607
					  (var_info, us) = readVarInfo var_info_ptr us
608
					-> case var_info of
609
						VI_Body fun_ident {tb_args, tb_rhs} new_aci_params
610
611
612
							# tb_args_ptrs = [ fv_info_ptr \\ {fv_info_ptr}<-tb_args ] 
							  (original_bindings, us_var_heap) = mapSt readPtr tb_args_ptrs us.us_var_heap
							  us_var_heap = fold2St bind tb_args_ptrs new_aci_params us_var_heap
613
							  (tb_rhs, us) = unfold tb_rhs ui { us & us_var_heap = us_var_heap }
614
							  us_var_heap = fold2St writePtr tb_args_ptrs original_bindings us.us_var_heap
615
							  new_aci = { aci & aci_params = new_aci_params, aci_opt_unfolder = Yes fun_ident, aci_free_vars = new_aci_free_vars }
616
617
618
619
620
							  new_eei = (EI_Extended (EEI_ActiveCase new_aci) ei)
							  us_symbol_heap = writePtr case_info_ptr new_eei us.us_symbol_heap
							-> (tb_rhs, { us & us_var_heap = us_var_heap, us_symbol_heap = us_symbol_heap })
						_	# new_eei = EI_Extended (EEI_ActiveCase { aci & aci_free_vars = new_aci_free_vars }) ei
							  us_symbol_heap = writePtr case_info_ptr new_eei us.us_symbol_heap
621
622
							-> unfold case_expr ui { us & us_symbol_heap = us_symbol_heap }
				_	-> unfold case_expr ui us	
623
624
		  where 
			// XXX consider to store BoundVars in VI_Body
625
626
			bind fv_info_ptr {fv_ident=name, fv_info_ptr=info_ptr} var_heap
				= writeVarInfo fv_info_ptr (VI_Expression (Var {var_ident=name, var_info_ptr=info_ptr, var_expr_ptr = nilPtr})) var_heap
627
628
629
630
631
632
633
634
/*
			bind ({fv_info_ptr}, var_bound_var) var_heap
				= writeVarInfo fv_info_ptr (VI_Expression var_bound_var) var_heap
*/

/*		update_active_case_info_and_unfold case_expr=:(Var {var_info_ptr}) case_info_ptr us
			#! var_info = sreadPtr var_info_ptr us.us_var_heap
			= case var_info of
635
				VI_Body fun_ident fun_body new_aci_var_info_ptr
636
637
					# (fun_body, us) = unfold fun_body us
					  (EI_Extended (EEI_ActiveCase aci) ei, us_symbol_heap) = readPtr case_info_ptr us.us_symbol_heap
638
					  new_aci = { aci & aci_var_info_ptr = new_aci_var_info_ptr, aci_opt_unfolder = Yes fun_ident }
639
640
641
642
643
					  us_symbol_heap = writePtr case_info_ptr (EI_Extended (EEI_ActiveCase new_aci) ei) us_symbol_heap
					-> (fun_body, { us & us_symbol_heap = us_symbol_heap })
				_	-> unfold case_expr us
*/
		update_active_case_info_and_unfold case_expr _ us
644
			= unfold case_expr ui us
645
646

		unfoldBoundVar {var_info_ptr} us
647
648
			# (VI_Expression (Var act_var), us_var_heap) = readPtr var_info_ptr us.us_var_heap
			= (act_var, { us & us_var_heap = us_var_heap })
649

Ronny Wichers Schreur's avatar
Ronny Wichers Schreur committed
650
651
instance unfold Let
where
652
	unfold lad=:{let_strict_binds, let_lazy_binds, let_expr, let_info_ptr} ui us
Sjaak Smetsers's avatar
Sjaak Smetsers committed
653
654
		# (let_strict_binds, us) = copy_bound_vars let_strict_binds us
		# (let_lazy_binds, us) = copy_bound_vars let_lazy_binds us
655
656
657
		# (let_strict_binds, us) = unfold let_strict_binds ui us
		# (let_lazy_binds, us) = unfold let_lazy_binds ui us
		# (let_expr, us) = unfold let_expr ui us
Ronny Wichers Schreur's avatar
Ronny Wichers Schreur committed
658
		  (old_let_info, us_symbol_heap) = readPtr let_info_ptr us.us_symbol_heap
659
660
		  (new_let_info, us_opt_type_heaps) = substitute_let_or_case_type old_let_info us.us_opt_type_heaps
		  (new_info_ptr, us_symbol_heap) = newPtr new_let_info us_symbol_heap
Sjaak Smetsers's avatar
Sjaak Smetsers committed
661
		= ({lad & let_strict_binds = let_strict_binds, let_lazy_binds = let_lazy_binds, let_expr = let_expr, let_info_ptr = new_info_ptr},
662
			{ us & us_symbol_heap = us_symbol_heap, us_opt_type_heaps = us_opt_type_heaps })
Ronny Wichers Schreur's avatar
Ronny Wichers Schreur committed
663
		where
664
			copy_bound_vars [bind=:{lb_dst} : binds] us
665
				# (lb_dst, us) = unfold lb_dst ui us
Ronny Wichers Schreur's avatar
Ronny Wichers Schreur committed
666
				  (binds, us) = copy_bound_vars binds us
667
				= ([ {bind & lb_dst = lb_dst} : binds ], us)
Ronny Wichers Schreur's avatar
Ronny Wichers Schreur committed
668
669
670
			copy_bound_vars [] us
				= ([], us)

671
672
673
674
675
676
substitute_let_or_case_type	expr_info No
	= (expr_info, No)
substitute_let_or_case_type	(EI_Extended extensions expr_info) yes_type_heaps
	# (new_expr_info, yes_type_heaps) = substitute_let_or_case_type expr_info yes_type_heaps
	= (EI_Extended extensions new_expr_info, yes_type_heaps)
substitute_let_or_case_type	(EI_CaseType case_type) (Yes type_heaps)
677
	# (new_case_type, type_heaps) = substitute case_type type_heaps
678
679
	= (EI_CaseType new_case_type, Yes type_heaps)
substitute_let_or_case_type	(EI_LetType let_type) (Yes type_heaps)
680
	# (new_let_type, type_heaps) = substitute let_type type_heaps
681
682
	= (EI_LetType new_let_type, Yes type_heaps)

Ronny Wichers Schreur's avatar
Ronny Wichers Schreur committed
683
684
instance unfold CasePatterns
where
685
686
	unfold (AlgebraicPatterns type patterns) ui us
		# (patterns, us) = unfold patterns ui us
Ronny Wichers Schreur's avatar
Ronny Wichers Schreur committed
687
		= (AlgebraicPatterns type patterns, us)
688
689
	unfold (BasicPatterns type patterns) ui us
		# (patterns, us) = unfold patterns ui us
Ronny Wichers Schreur's avatar
Ronny Wichers Schreur committed
690
		= (BasicPatterns type patterns, us)
691
692
693
694
	unfold (OverloadedListPatterns type decons_expr patterns) ui us
		# (patterns, us) = unfold patterns ui us
		# (decons_expr, us) = unfold decons_expr ui us
		= (OverloadedListPatterns type decons_expr patterns, us)
John van Groningen's avatar
John van Groningen committed
695
696
697
	unfold (NewTypePatterns type patterns) ui us
		# (patterns, us) = unfold patterns ui us
		= (NewTypePatterns type patterns, us)
698
699
	unfold (DynamicPatterns patterns) ui us
		# (patterns, us) = unfold patterns ui us
Ronny Wichers Schreur's avatar
Ronny Wichers Schreur committed
700
701
702
703
		= (DynamicPatterns patterns, us)

instance unfold AlgebraicPattern
where
704
705
706
	unfold guard=:{ap_vars,ap_expr} ui us
		# (ap_vars, us) = unfold ap_vars ui us
		  (ap_expr, us) = unfold ap_expr ui us
Ronny Wichers Schreur's avatar
Ronny Wichers Schreur committed
707
708
		= ({ guard & ap_vars = ap_vars, ap_expr = ap_expr }, us)

709
710
711
712
713
714
instance unfold BasicPattern
where
	unfold guard=:{bp_expr} ui us
		# (bp_expr, us) = unfold bp_expr ui us
		= ({ guard & bp_expr = bp_expr }, us)

Ronny Wichers Schreur's avatar
Ronny Wichers Schreur committed
715
716
instance unfold DynamicPattern
where
717
718
719
	unfold guard=:{dp_var,dp_rhs} ui us
		# (dp_var, us) = unfold dp_var ui us
		  (dp_rhs, us) = unfold dp_rhs ui us
Ronny Wichers Schreur's avatar
Ronny Wichers Schreur committed
720
721
		= ({ guard & dp_var = dp_var, dp_rhs = dp_rhs }, us)

722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
instance unfold [a] | unfold a
where
	unfold l ui us
		= map_st l us
		where
			map_st [x : xs] s
			 	# (x, s) = unfold x ui s
				  (xs, s) = map_st xs s
				#! s = s
				= ([x : xs], s)
			map_st [] s
			 	= ([], s)

instance unfold (a,b) | unfold a & unfold b
where
	unfold (a,b) ui us
		# (a,us) = unfold a ui us
		# (b,us) = unfold b ui us
		= ((a,b),us)

instance unfold (Optional a) | unfold a
where
	unfold (Yes x) ui us
		# (x, us) = unfold x ui us
		= (Yes x, us)
	unfold no ui us
		= (no, us)

Ronny Wichers Schreur's avatar
Ronny Wichers Schreur committed
750
751
752
753
754
updateFunctionCalls :: ![FunCall] ![FunCall] !*{# FunDef} !*SymbolTable
	-> (![FunCall], !*{# FunDef}, !*SymbolTable)
updateFunctionCalls calls collected_calls fun_defs symbol_table
	= foldSt add_function_call calls (collected_calls, fun_defs, symbol_table)
where
755
	add_function_call fc=:(FunCall fc_index _) (collected_calls, fun_defs, symbol_table)
756
//		# fc_index = trace_n ("add_function_call: "+++toString fc_index+++" ") fc_index
757
758
		# ({fun_ident}, fun_defs) = fun_defs![fc_index]
		  (collected_calls, symbol_table) = examineFunctionCall fun_ident fc (collected_calls, symbol_table) 
Ronny Wichers Schreur's avatar
Ronny Wichers Schreur committed
759
760
		= (collected_calls, fun_defs, symbol_table)

761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
examineFunctionCall {id_info} fc=:(FunCall fc_index _) (calls, symbol_table)
	# (entry, symbol_table) = readPtr id_info symbol_table
	= case entry.ste_kind of
		STE_Called indexes
			| is_member fc_index indexes
				-> (calls, symbol_table)
				-> ([ fc : calls ], symbol_table <:= (id_info, { entry & ste_kind = STE_Called [ FunctionOrIclMacroIndex fc_index : indexes ]}))
		_
			-> ( [ fc : calls ], symbol_table <:=
					(id_info, { ste_kind = STE_Called [FunctionOrIclMacroIndex fc_index], ste_index = NoIndex, ste_def_level = NotALevel, ste_previous = entry }))
	where
		is_member fc_index [FunctionOrIclMacroIndex index:indexes]
			| fc_index==index
				= True
				= is_member fc_index indexes
		is_member fc_index [_:indexes]
			= is_member fc_index indexes
		is_member _ []
			= False
examineFunctionCall {id_info} fc=:(MacroCall macro_module_index fc_index _) (calls, symbol_table)
781
	# (entry, symbol_table) = readPtr id_info symbol_table
Ronny Wichers Schreur's avatar
Ronny Wichers Schreur committed
782
783
	= case entry.ste_kind of
		STE_Called indexes
784
			| is_member macro_module_index fc_index indexes
Ronny Wichers Schreur's avatar
Ronny Wichers Schreur committed
785
				-> (calls, symbol_table)
786
				-> ([ fc : calls ], symbol_table <:= (id_info, { entry & ste_kind = STE_Called [ DclMacroIndex macro_module_index fc_index : indexes ]}))
Ronny Wichers Schreur's avatar
Ronny Wichers Schreur committed
787
788
		_
			-> ( [ fc : calls ], symbol_table <:=
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
					(id_info, { ste_kind = STE_Called [DclMacroIndex macro_module_index fc_index], ste_index = NoIndex, ste_def_level = NotALevel, ste_previous = entry }))
	where
		is_member macro_module_index fc_index [DclMacroIndex module_index index:indexes]
			| fc_index==index && module_index==macro_module_index
				= True
				= is_member macro_module_index fc_index indexes
		is_member macro_module_index fc_index [_:indexes]
			= is_member macro_module_index fc_index indexes
		is_member _ _ []
			= False
			
::	ExpandState =
	{	es_symbol_table	:: !.SymbolTable
	,	es_var_heap		:: !.VarHeap
	,	es_symbol_heap 	:: !.ExpressionHeap
	,	es_error 		:: !.ErrorAdmin,
		es_fun_defs :: !.{#FunDef},
		es_macro_defs :: !.{#.{#FunDef}},
		es_new_fun_def_numbers :: ![Int]
	}
Ronny Wichers Schreur's avatar
Ronny Wichers Schreur committed
809

810
811
812
813
copy_macro_and_local_functions :: FunDef (Optional CopiedLocalFunctions) *ExpandState -> (!FunDef,![(CopiedLocalFunction,FunDef)],!Optional CopiedLocalFunctions,!*ExpandState);
copy_macro_and_local_functions macro=:{fun_kind} local_macro_functions es
	# (macro,local_macro_functions,es) = copy_macro_or_local_macro_function macro local_macro_functions es
	# (new_functions,local_macro_functions,es) = copy_local_functions_of_macro local_macro_functions [] es
814
815
	= (macro,new_functions,local_macro_functions,es)

816
817
copy_local_functions_of_macro :: (Optional CopiedLocalFunctions) [CopiedLocalFunction] *ExpandState -> (![(CopiedLocalFunction,FunDef)],!Optional CopiedLocalFunctions,!*ExpandState);
copy_local_functions_of_macro local_macro_functions local_functions_to_be_copied es
818
819
820
821
822
823
824
825
826
827
828
829
	# (local_functions_to_be_copied,local_macro_functions) = add_new_local_functions_to_be_copied local_functions_to_be_copied local_macro_functions
		with
			add_new_local_functions_to_be_copied local_functions_to_be_copied local_macro_functions=:(Yes copied_local_macro_functions=:{new_copied_local_functions=[]})
				= (local_functions_to_be_copied,Yes {copied_local_macro_functions & used_copied_local_functions=[]})
			add_new_local_functions_to_be_copied local_functions_to_be_copied (Yes {copied_local_functions,new_copied_local_functions,next_local_function_n})
				# local_macro_functions=Yes {copied_local_functions=copied_local_functions++new_copied_local_functions,
											new_copied_local_functions=[],used_copied_local_functions=[],next_local_function_n=next_local_function_n}
				= (local_functions_to_be_copied++new_copied_local_functions,local_macro_functions)
	= case local_functions_to_be_copied of
		[]
			-> ([],local_macro_functions,es)
		[(old_and_new_function_n=:{old_function_n,new_function_n}):local_functions_to_be_copied]
830
831
832
833
834
835
836
837
838
839
840
841
842
843
			# (function,es)
				= case old_function_n of
					FunctionOrIclMacroIndex old_function_index
						# (function,es)=es!es_fun_defs.[old_function_index]			
						#! function_group_index=function.fun_info.fi_group_index
						# es = {es & es_fun_defs.[old_function_index].fun_info.fi_group_index= if (function_group_index>NoIndex) (-2-function_group_index) function_group_index}
						# function = {function & fun_info.fi_group_index=if (function_group_index<NoIndex) (-2-function_group_index) function_group_index}
						-> (function,es)
					DclMacroIndex old_function_module_index old_function_index
						# (function,es)=es!es_macro_defs.[old_function_module_index,old_function_index]			
						#! function_group_index=function.fun_info.fi_group_index
						# es = {es & es_macro_defs.[old_function_module_index].[old_function_index].fun_info.fi_group_index= if (function_group_index>NoIndex) (-2-function_group_index) function_group_index}
						# function = {function & fun_info.fi_group_index=if (function_group_index<NoIndex) (-2-function_group_index) function_group_index}
						-> (function,es)
844
845
			# (function,local_macro_functions,es) = copy_macro_or_local_macro_function function local_macro_functions es
			# (new_functions,local_macro_functions,es) = copy_local_functions_of_macro local_macro_functions local_functions_to_be_copied es
846
847
848
849
850
851
852
853
854
855
			-> ([(old_and_new_function_n,function):new_functions],local_macro_functions,es)

update_calls calls No
	= calls
update_calls calls (Yes {used_copied_local_functions=[]})
	= calls
update_calls calls (Yes {used_copied_local_functions})
	# calls = remove_old_calls calls
	= add_new_calls used_copied_local_functions calls
where
856
	remove_old_calls [call=:(FunCall fc_index _):calls]
857
858
859
860
861
862
		| contains_old_function_n used_copied_local_functions
//			# calls = trace ("remove_old_calls1: "+++toString fc_index) calls
			= remove_old_calls calls
//			# calls = trace ("remove_old_calls2: "+++toString fc_index) calls
			= [call:remove_old_calls calls]
	where
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
		contains_old_function_n [{old_function_n=FunctionOrIclMacroIndex old_function_index }:local_functions]
			= fc_index==old_function_index || contains_old_function_n local_functions
		contains_old_function_n [_:local_functions]
			= contains_old_function_n local_functions
		contains_old_function_n []
			= False
	remove_old_calls [call=:(MacroCall macro_module_index fc_index _):calls]
		| contains_old_function_n used_copied_local_functions
			= remove_old_calls calls
			= [call:remove_old_calls calls]
	where
		contains_old_function_n [{old_function_n=DclMacroIndex old_macro_module_index old_function_index }:local_functions]
			= fc_index==old_function_index && macro_module_index==old_macro_module_index || contains_old_function_n local_functions
		contains_old_function_n [_:local_functions]
			= contains_old_function_n local_functions
878
879
		contains_old_function_n []
			= False
880
881
	remove_old_calls [call=:(DclFunCall _ _):calls]
			= [call:remove_old_calls calls]
882
883
884
885
886
	remove_old_calls []
		= []
	
	add_new_calls [{new_function_n}:local_functions] calls
//		# local_functions = trace ("add_new_calls: "+++toString new_function_n) local_functions
887
		= add_new_calls local_functions [FunCall new_function_n NotALevel:calls]
888
889
890
	add_new_calls [] calls
		= calls

891
892
copy_macro_or_local_macro_function :: !FunDef !(Optional CopiedLocalFunctions) !*ExpandState -> (!FunDef,!Optional CopiedLocalFunctions,!.ExpandState);
copy_macro_or_local_macro_function macro=:{fun_body = TransformedBody {tb_args,tb_rhs},fun_kind,fun_info={fi_local_vars,fi_calls}} local_macro_functions es=:{es_var_heap,es_symbol_heap}
893
894
	# (tb_args,es_var_heap) = create_new_arguments tb_args es_var_heap
		with
895
			create_new_arguments [var=:{fv_ident,fv_info_ptr} : vars] var_heap
896
897
				# (new_vars,var_heap) = create_new_arguments vars var_heap
				# (new_info, var_heap) = newPtr VI_Empty var_heap
898
899
				# new_var = { fv_ident = fv_ident, fv_def_level = NotALevel, fv_info_ptr = new_info, fv_count = 0 }
				= ([new_var : new_vars], writePtr fv_info_ptr (VI_Variable fv_ident new_info) var_heap)
900
901
902
903
			create_new_arguments [] var_heap
				= ([],var_heap)
	# us = { us_symbol_heap = es_symbol_heap, us_var_heap = es_var_heap, us_opt_type_heaps = No,us_cleanup_info = [],
			 us_local_macro_functions = local_macro_functions }
904
	# (result_expr,{us_local_macro_functions,us_symbol_heap,us_var_heap}) = unfold tb_rhs {ui_handle_aci_free_vars = RemoveThem} us
905
906
907
908
909
910
911
912
913
914
915
916
917
918
	# (fi_local_vars,us_var_heap) = update_local_vars fi_local_vars us_var_heap
		with
			update_local_vars :: ![FreeVar] !*(Heap VarInfo) -> (![FreeVar],!*Heap VarInfo);
			update_local_vars [fv=:{fv_info_ptr}:fvs] var_heap
				# (fvs,var_heap)=update_local_vars fvs var_heap
				# (fv_info,var_heap) = readPtr fv_info_ptr var_heap
				# fv = {fv & fv_info_ptr=case fv_info of 
											(VI_Variable _ info_ptr) -> info_ptr
						}
				= ([fv:fvs],var_heap)
			update_local_vars [] var_heap
				= ([],var_heap)
	# fi_calls = update_calls fi_calls us_local_macro_functions
	= ({macro & fun_body = TransformedBody {tb_args=tb_args,tb_rhs=result_expr},fun_info.fi_local_vars=fi_local_vars,fun_info.fi_calls=fi_calls},us_local_macro_functions,
919
		{es & es_var_heap=us_var_heap, es_symbol_heap=us_symbol_heap})
920

921
unfoldMacro :: !FunDef ![Expression] !*ExpandInfo -> (!Expression, !*ExpandInfo)
922
unfoldMacro {fun_body =fun_body=: TransformedBody {tb_args,tb_rhs}, fun_info = {fi_calls},fun_kind,fun_ident} args (calls, es=:{es_var_heap,es_symbol_heap,es_fun_defs})
Ronny Wichers Schreur's avatar
Ronny Wichers Schreur committed
923
	# (let_binds, var_heap) = bind_expressions tb_args args [] es_var_heap
924
925
926
	#! size_fun_defs = size es_fun_defs
	# copied_local_functions = Yes { copied_local_functions=[],used_copied_local_functions=[],new_copied_local_functions=[],next_local_function_n=size_fun_defs}
	# us = { us_symbol_heap = es_symbol_heap, us_var_heap = var_heap, us_opt_type_heaps = No,us_cleanup_info = [], us_local_macro_functions = copied_local_functions }
927
	# (result_expr,{us_local_macro_functions,us_symbol_heap,us_var_heap}) = unfold tb_rhs {ui_handle_aci_free_vars = RemoveThem} us
928
	# es = {es & es_var_heap = us_var_heap, es_symbol_heap = us_symbol_heap}
929
	# fi_calls = update_calls fi_calls us_local_macro_functions
930
	# (new_functions,us_local_macro_functions,es) = copy_local_functions_of_macro us_local_macro_functions [] es
931
932
933
934
935
936
937
938
939
940
	# {es_symbol_heap,es_symbol_table,es_fun_defs,es_new_fun_def_numbers} = es
	# (es_fun_defs,es_new_fun_def_numbers) = case new_functions of
		[]
			-> (es_fun_defs,es_new_fun_def_numbers)
		_
			# last_function_index = case us_local_macro_functions of (Yes {next_local_function_n}) -> next_local_function_n-1
			# new_fun_defs = new_fun_defs
				with
					new_fun_defs :: *{!FunDef}
					new_fun_defs => {fun_def \\ (_,fun_def)<-new_functions}
941
942
943
944
945
//			-> ({if (i<size_fun_defs) es_fun_defs.[i] new_fun_defs.[i-size_fun_defs] \\ i<-[0..last_function_index]} // inefficient
//				,[size_fun_defs:es_new_fun_def_numbers])
//			#! new_fun_defs = arrayConcat es_fun_defs new_fun_defs	// leads to backend crash!
			# new_fun_defs = arrayConcat es_fun_defs new_fun_defs
			-> (new_fun_defs, [size_fun_defs:es_new_fun_def_numbers])
946
	# (calls, fun_defs, es_symbol_table) = updateFunctionCalls fi_calls calls es_fun_defs es_symbol_table
Ronny Wichers Schreur's avatar
Ronny Wichers Schreur committed
947
	| isEmpty let_binds
948
949
950
951
		= (result_expr, (calls, { es & es_symbol_table = es_symbol_table, es_fun_defs=fun_defs,es_new_fun_def_numbers=es_new_fun_def_numbers }))
		# (new_info_ptr, es_symbol_heap) = newPtr EI_Empty es_symbol_heap
		# result_expr=Let { let_strict_binds = [], let_lazy_binds = let_binds, let_expr = result_expr, let_info_ptr = new_info_ptr, let_expr_position = NoPos }
		= (result_expr, (calls, { es & es_symbol_table = es_symbol_table, es_symbol_heap=es_symbol_heap, es_fun_defs=fun_defs,es_new_fun_def_numbers=es_new_fun_def_numbers }))
Ronny Wichers Schreur's avatar
Ronny Wichers Schreur committed
952
953
954
955
956
957
958
where
	bind_expressions [var : vars] [expr : exprs] binds var_heap
		# (binds, var_heap) = bind_expressions vars exprs binds var_heap
		= bind_expression var expr binds var_heap
	bind_expressions _ _ binds var_heap
		= (binds, var_heap)

959
	bind_expression :: FreeVar Expression [LetBind] *(Heap VarInfo) -> (![LetBind],!*Heap VarInfo);
Ronny Wichers Schreur's avatar
Ronny Wichers Schreur committed
960
961
962
	bind_expression {fv_count} expr binds var_heap
		| fv_count == 0
			= (binds, var_heap)
963
964
965
	bind_expression {fv_info_ptr} (Var {var_ident,var_info_ptr}) binds var_heap
		= (binds, writePtr fv_info_ptr (VI_Variable var_ident var_info_ptr) var_heap)
	bind_expression {fv_ident,fv_info_ptr,fv_count} expr binds var_heap
Ronny Wichers Schreur's avatar
Ronny Wichers Schreur committed
966
967
968
		| fv_count == 1
			= (binds, writePtr fv_info_ptr (VI_Expression expr) var_heap)
		# (new_info, var_heap) = newPtr VI_Empty var_heap
969
970
		  new_var = { fv_ident = fv_ident, fv_def_level = NotALevel, fv_info_ptr = new_info, fv_count = 0 }
		= ([{ lb_src = expr, lb_dst = new_var, lb_position = NoPos} : binds], writePtr fv_info_ptr (VI_Variable fv_ident new_info) var_heap)
Ronny Wichers Schreur's avatar
Ronny Wichers Schreur committed
971
972
973
974
975
976
977
978
979
980