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Revision 05f85b44

Added by Guillaume DAVY almost 6 years ago

Ada: Start cleaning Ada to prepare for why beckend

View differences:

src/backends/Ada/ada_backend_ads.ml
31 31

  
32 32
  let suffixOld = "_old"
33 33
  let suffixNew = "_new"
34
  let pp_invariant_name fmt = fprintf fmt "invariant"
34
  let pp_invariant_name fmt = fprintf fmt "inv"
35 35
  let pp_transition_name fmt = fprintf fmt "transition"
36 36
  let pp_init_name fmt = fprintf fmt "init"
37 37
  let pp_state_name_predicate suffix fmt = fprintf fmt "%t%s" pp_state_name suffix
38
  let pp_name_generic fmt = fprintf fmt "name"
39
  let pp_type_generic fmt = fprintf fmt "string"
40

  
41

  
42

  
43
  (** Printing function for basic assignement [var := value].
44

  
45
      @param fmt the formater to print on
46
      @param var_name the name of the variable
47
      @param value the value to be assigned
48
   **)
49
  let pp_local_eq env fmt var value =
50
    fprintf fmt "%t = %a"
51
      (pp_var_name var)
52
      (pp_value env) value
53

  
54
  (** Printing function for basic assignement [var := value].
55

  
56
      @param fmt the formater to print on
57
      @param var_name the name of the variable
58
      @param value the value to be assigned
59
   **)
60
  let pp_state_eq env fmt var value =
61
    fprintf fmt "%t = %a"
62
      (pp_access (pp_state_name_predicate suffixNew) (pp_var_name var))
63
      (pp_value env) value
64

  
65
  (** Printing function for instruction. See
66
      {!type:Machine_code_types.instr_t} for more details on
67
      machine types.
68

  
69
      @param typed_submachines list of all typed machine instances of this machine
70
      @param machine the current machine
71
      @param fmt the formater to print on
72
      @param instr the instruction to print
73
   **)
74
  let pp_machine_instr typed_submachines env (pps, assigned) instr =
75
    let pp_state suffix i fmt = fprintf fmt "%t.%s" (pp_state_name_predicate suffix) i in
76
    let fresh x l = not (List.exists (fun y -> String.equal x.var_id y.var_id) l) in
77
    let pp, newvals =
78
      match get_instr_desc instr with
79
        (* no reset *)
80
        | MNoReset _ -> ((fun fmt -> ()), [])
81
        (* reset  *)
82
        | MReset i when List.mem_assoc i typed_submachines ->
83
            let (substitution, submachine) = get_instance i typed_submachines in
84
            let pp_package = pp_package_name_with_polymorphic substitution submachine in
85
            let args = if is_machine_statefull submachine then [[pp_state suffixNew i]] else [] in
86
            ((fun fmt -> pp_call fmt (pp_package_access (pp_package, pp_init_name), args)),
87
            [])
88
        | MLocalAssign (ident, value) ->
89
            assert(fresh ident assigned);
90
            ((fun fmt -> pp_local_eq env fmt ident value),
91
            [ident])
92
        | MStateAssign (ident, value) ->
93
            assert(fresh ident assigned);
94
            ((fun fmt -> pp_state_eq env fmt ident value),
95
            [ident])
96
        | MStep ([i0], i, vl) when is_builtin_fun i ->
97
            assert(fresh i0 assigned);
98
            let value = mk_val (Fun (i, vl)) i0.var_type in
99
            ((fun fmt -> (if List.mem_assoc i0.var_id env then
100
              pp_state_eq env fmt i0 value
101
            else
102
              pp_local_eq env fmt i0 value)),
103
            [i0])
104
        | MStep (il, i, vl) when List.mem_assoc i typed_submachines ->
105
            assert(List.for_all (fun x -> fresh x assigned) il);
106
            let (substitution, submachine) = get_instance i typed_submachines in
107
            let pp_package = pp_package_name_with_polymorphic substitution submachine in
108
            let input = List.map (fun x fmt -> pp_value env fmt x) vl in
109
            let output = List.map pp_var_name il in
110
            let args =
111
              (if is_machine_statefull submachine then [[pp_state suffixOld i;pp_state suffixNew i]] else [])
112
                @(if input!=[] then [input] else [])
113
                @(if output!=[] then [output] else [])
114
            in
115
            ((fun fmt -> fprintf fmt "(%a)" pp_call (pp_package_access (pp_package, pp_transition_name), args)),
116
            il)
117
        | MComment s -> ((fun fmt -> ()), [])
118
        | _ -> assert false
119
      in
120
      (pp::pps, newvals@assigned)
121

  
122

  
123

  
124

  
125

  
126

  
127

  
128

  
129

  
130

  
131

  
132

  
133
let pp_predicate_special pp_name args fmt content_opt =
134
  let rec quantify pp_content = function
135
    | [] -> pp_content
136
    | (pp_var, pp_type)::q -> fun fmt ->
137
      fprintf fmt "for some %t in %t => (@,  @[<v>%t@])" pp_var pp_type (quantify pp_content q)
138
  in
139
  let content = match content_opt with
140
    | Some (locals, booleans) -> Some (quantify (fun fmt -> Utils.fprintf_list ~sep:"@,and " (fun fmt pp->pp fmt) fmt booleans) locals)
141
    | None -> None
142
  in
143
  pp_predicate pp_name args fmt content
144

  
145

  
146

  
147

  
38
  let pp_axiomatize_package_name fmt = fprintf  fmt "axiomatize"
148 39

  
149 40
  (** Print the expression function representing the transition predicate.
150 41
     @param fmt the formater to print on
151 42
     @param machine the machine
152 43
  **)
153
  let pp_init_predicate prototype typed_submachines fmt (opt_spec_machine, m) =
44
  let pp_init_predicate typed_submachines fmt (opt_spec_machine, m) =
154 45
    let new_state = (AdaIn, pp_state_name_predicate suffixNew, pp_state_type, None) in
155
    let env = [] in
156
    let instrs = push_if_in_expr m.minit in
157
    let content = fst (List.fold_left (pp_machine_instr typed_submachines env) ([], []) instrs) in
158
    pp_predicate_special pp_init_name ([[new_state]]) fmt (if prototype then None else Some ([], content))
159
    
160

  
161

  
162

  
46
    pp_predicate pp_init_name [[new_state]] true fmt None
163 47

  
164 48
  (** Print the expression function representing the transition predicate.
165 49
     @param fmt the formater to print on
166 50
     @param machine the machine
167 51
  **)
168
  let pp_transition_predicate prototype typed_submachines fmt (opt_spec_machine, m) =
52
  let pp_transition_predicate typed_submachines fmt (opt_spec_machine, m) =
169 53
    let old_state = (AdaIn, pp_state_name_predicate suffixOld, pp_state_type, None) in
170 54
    let new_state = (AdaIn, pp_state_name_predicate suffixNew, pp_state_type, None) in
171
    let env = List.map (fun x -> x.var_id, pp_state_name_predicate suffixOld) m.mmemory in
172 55
    let inputs = build_pp_var_decl_step_input AdaIn None m in
173 56
    let outputs = build_pp_var_decl_step_output AdaIn None m in
174
    let instrs = push_if_in_expr m.mstep.step_instrs in
175
    let content = fst (List.fold_left (pp_machine_instr typed_submachines env) ([], []) instrs) in
176
    let locals = List.map (fun x-> (pp_var_name x, fun fmt -> pp_var_type fmt x)) m.mstep.step_locals in
177
    pp_predicate_special pp_transition_name ([[old_state; new_state]]@inputs@outputs) fmt (if prototype then None else Some (locals, content))
178

  
179
  let build_pp_past mode with_st i = (mode, pp_past_name (i+1), pp_state_type , with_st)
180

  
181
  let pp_invariant_predicate prototype typed_submachines fmt (past_size, opt_spec_machine, m) =
182
    let pp_state nbr = if nbr = 0 then pp_state_name else pp_past_name nbr in
183
    if past_size < 1 then fprintf fmt "" else
184
    begin
185
      let pp_var x fmt =
186
          pp_clean_ada_identifier fmt x
187
      in
188
      let input = List.map pp_var_name m.mstep.step_inputs in
189
      let output = List.map pp_var_name m.mstep.step_outputs in
190
      let args =
191
        [[pp_old pp_state_name;pp_state_name]]
192
          @(if input!=[] then [input] else [])
193
          @(if output!=[] then [output] else [])
194
      in
195
      let transition fmt = pp_call fmt (pp_transition_name, args) in
196

  
197
      let pp_append_nbr pp nbr fmt = fprintf fmt "%t_%i" pp nbr in
198
      let pp_transition nbr fmt =
199
        assert(is_machine_statefull m);
200
        let args =
201
          [[pp_past_name (nbr+1);pp_state nbr]]
202
            @(if input!=[] then [input] else [])
203
            @(if output!=[] then [output] else [])
204
        in
205
        pp_call fmt (pp_transition_name, args)
206
      in
207
      let build_chain nbr =
208
        assert (nbr > 0);
209
        pp_and (init pp_transition nbr)
210
      in
211
      let pp_init nbr fmt = pp_call fmt (pp_init_name, [[pp_state nbr]]) in
212
      let rec build_initial nbr = pp_and (match nbr with
213
        | 0 -> [pp_init 0]
214
        | i when i > 0 -> [pp_init i;build_chain i]
215
        | _ -> assert false)
216
      in
217
      let content = pp_or ((build_chain (past_size-1))::(init build_initial (past_size-1))) in
218
      fprintf fmt ";@,@,%a" (pp_predicate pp_invariant_name [init (build_pp_past AdaIn None) (past_size-1);[build_pp_state_decl AdaIn None]]) (if prototype then None else Some content)
219
    end
220

  
221

  
57
    pp_predicate pp_transition_name ([[old_state; new_state]]@inputs@outputs) true fmt None
222 58

  
59
  let pp_invariant_predicate typed_submachines fmt (opt_spec_machine, m) =
60
    pp_predicate pp_invariant_name [[build_pp_state_decl AdaIn None]] true fmt None
223 61

  
224 62
  (** Print a new statement instantiating a generic package.
225 63
     @param fmt the formater to print on
......
229 67
  let pp_new_package fmt (substitutions, machine) =
230 68
    let pp_name = pp_package_name machine in
231 69
    let pp_new_name = pp_package_name_with_polymorphic substitutions machine in
232
    let instanciations = ((pp_name_generic, pp_adastring pp_name))::(List.map (fun (id, typ) -> (pp_polymorphic_type id, fun fmt -> pp_type fmt typ)) substitutions) in
70
    let instanciations = List.map (fun (id, typ) -> (pp_polymorphic_type id, fun fmt -> pp_type fmt typ)) substitutions in
233 71
    pp_package_instanciation pp_new_name pp_name fmt instanciations
234 72

  
235 73
  (** Remove duplicates from a list according to a given predicate.
......
259 97
     @param typed_submachines list of all typed submachines of this machine
260 98
     @param m the machine
261 99
  **)
262
  let pp_file fmt (typed_submachines, ((m_spec_opt, guarantees, past_size), m)) =
100
  let pp_file fmt (typed_submachines, ((m_spec_opt, guarantees), m)) =
263 101
    let typed_machines = snd (List.split typed_submachines) in
264 102
    let typed_machines_set = remove_duplicates eq_typed_machine typed_machines in
265 103
    
......
268 106
    let polymorphic_types = find_all_polymorphic_type m in
269 107
    
270 108
    let typed_machines_to_instanciate =
271
      (*List.filter (fun (l, _) -> l != [])*) typed_machines_set in
109
      List.filter (fun (l, _) -> l != []) typed_machines_set in
272 110

  
273 111
    let typed_instances = List.filter is_submachine_statefull typed_submachines in
274 112

  
275 113
    let memories = match m_spec_opt with
276 114
      | None -> []
277
      | Some m -> List.map (fun x-> pp_var_decl (build_pp_var_decl AdaNoMode (Some (true, [], [])) x)) m.mmemory
115
      | Some m -> List.map (fun x-> pp_var_decl (build_pp_var_decl AdaNoMode (Some (true, false, [], [])) x)) m.mmemory
278 116
    in
279 117
    let ghost_private = memories in
280 118
    
281 119
    let vars_spec = match m_spec_opt with
282 120
      | None -> []
283
      | Some m_spec -> List.map (build_pp_var_decl AdaNoMode (Some (true, [], []))) (m_spec.mmemory)
121
      | Some m_spec -> List.map (build_pp_var_decl AdaNoMode (Some (true, false, [], []))) (m_spec.mmemory)
284 122
    in
285 123
    let vars = List.map (build_pp_var_decl AdaNoMode None) m.mmemory in
286 124
    let states = List.map (build_pp_state_decl_from_subinstance AdaNoMode None) typed_instances in
......
296 134
    in
297 135

  
298 136
    let pp_state_decl_and_reset fmt =
299
      let init fmt = pp_call fmt (pp_init_name, [[pp_state_name]]) in
300
      let contract = Some (false, [], [init]) in
137
      let init fmt = pp_call fmt (pp_access pp_axiomatize_package_name pp_init_name, [[pp_state_name]]) in
138
      let contract = Some (false, false, [], [init]) in
301 139
      fprintf fmt "%t;@,@,%a;@,@,"
302 140
        (*Declare the state type*)
303 141
        (pp_type_decl pp_state_type AdaPrivate)
......
307 145
    in
308 146

  
309 147
    let pp_private_section fmt =
310
      fprintf fmt "@,private@,@,%a%t%a;@,@,%a;@,@,%a%a%t%a"
148
      fprintf fmt "@,private@,@,%a%t%a%t%a"
311 149
      (*Instantiate the polymorphic type that need to be instantiated*)
312 150
      (Utils.fprintf_list ~sep:";@," pp_new_package) typed_machines_to_instanciate
313 151
      (Utils.pp_final_char_if_non_empty ";@,@," typed_machines_to_instanciate)
......
315 153
      (*Define the state type*)
316 154
      pp_ifstatefull (fun fmt-> pp_record pp_state_type fmt var_lists)
317 155
        
318
      (*Declare the init predicate*)
319
      (pp_init_predicate false typed_submachines) (m_spec_opt, m)
320
        
321
      (*Declare the transition predicate*)
322
      (pp_transition_predicate false typed_submachines) (m_spec_opt, m)
323
        
324
      (*Declare the transition predicate*)
325
      (pp_invariant_predicate false typed_submachines) (past_size, m_spec_opt, m)
326
        
327 156
      (Utils.pp_final_char_if_non_empty ";@,@," ghost_private)
328 157
      (Utils.fprintf_list ~sep:";@," (fun fmt pp -> pp fmt)) ghost_private
329 158
    in
......
344 173
                @(if input!=[] then [input] else [])
345 174
                @(if output!=[] then [output] else [])
346 175
            in
347
            let transition fmt = pp_call fmt (pp_transition_name, args) in
348
            let invariant fmt = pp_call fmt (pp_invariant_name, [init (fun i->pp_past_name (i+1)) (past_size-1);[pp_state_name]]) in
349
            if past_size > 0 then
350
              [invariant], [transition;invariant]
351
            else
352
              [], [transition]
176
            let transition fmt = pp_call fmt (pp_access pp_axiomatize_package_name pp_transition_name, args) in
177
            let invariant fmt = pp_call fmt (pp_access pp_axiomatize_package_name pp_invariant_name, [[pp_state_name]]) in
178
            [invariant], [transition;invariant]
353 179
          end
354 180
          else
355 181
            [], []
......
359 185
        if post_conditions = [] && pre_conditions = [] then
360 186
          None
361 187
        else
362
          Some (false, pre_conditions, post_conditions)
188
          Some (false, false, pre_conditions, post_conditions)
363 189
      in
364
      let pp_guarantee name = pp_var_decl (AdaNoMode, (fun fmt -> pp_clean_ada_identifier fmt name), pp_boolean_type , (Some (true, [], []))) in
365
      let pasts = List.map pp_var_decl (init (build_pp_past AdaNoMode (Some (true, [], []))) (past_size-1)) in
366
      let ghost_public = pasts@(List.map pp_guarantee guarantees) in
367
      fprintf fmt "@,%a%t%a%a%a@,@,%a;@,@,%a%a;%t"
190
      let pp_guarantee name = pp_var_decl (AdaNoMode, (fun fmt -> pp_clean_ada_identifier fmt name), pp_boolean_type , (Some (true, false, [], []))) in
191
      let ghost_public = List.map pp_guarantee guarantees in
192
      fprintf fmt "@,%a%t%a%a%a@,@,%a;@,@,%t"
368 193
        
369 194
        (Utils.fprintf_list ~sep:";@," (fun fmt pp -> pp fmt)) ghost_public
370 195
        (Utils.pp_final_char_if_non_empty ";@,@," ghost_public)
......
376 201
        
377 202
        pp_ifstatefull (fun fmt -> fprintf fmt ";@,")
378 203
        
379
        (*Declare the init predicate*)
380
        (pp_init_predicate true typed_submachines) (m_spec_opt, m)
381
        
382
        (*Declare the transition predicate*)
383
        (pp_transition_predicate true typed_submachines) (m_spec_opt, m)
384
        
385
        (*Declare the transition predicate*)
386
        (pp_invariant_predicate true typed_submachines) (past_size, m_spec_opt, m)
204
        (pp_package (pp_axiomatize_package_name) [] false)
205
          (fun fmt -> fprintf fmt "pragma Annotate (GNATProve, External_Axiomatization);@,@,%a;@,%a;@,%a"
206
            (*Declare the init predicate*)
207
            (pp_init_predicate typed_submachines) (m_spec_opt, m)
208
            (*Declare the transition predicate*)
209
            (pp_transition_predicate typed_submachines) (m_spec_opt, m)
210
            (*Declare the invariant predicate*)
211
            (pp_invariant_predicate typed_submachines) (m_spec_opt, m)
212
          )
387 213
        
388 214
        (*Print the private section*)
389 215
        pp_private_section
390 216
    in
391 217
    
392 218
    let pp_poly_type id = pp_type_decl (pp_polymorphic_type id) AdaPrivate in
393
    let pp_generics = (pp_var_decl (AdaNoMode, pp_name_generic, pp_type_generic , None))::(List.map pp_poly_type polymorphic_types) in
219
    let pp_generics = List.map pp_poly_type polymorphic_types in
394 220
    
395 221
    fprintf fmt "@[<v>%a%t%a;@]@."
396 222
      

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