1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
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
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
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
247
248
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
280
281
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 | ------------------------------------------------------------------------------
-- Copyright (C) 2020 by Heisenbug Ltd. (gh+spat@heisenbug.eu)
--
-- This work is free. You can redistribute it and/or modify it under the
-- terms of the Do What The Fuck You Want To Public License, Version 2,
-- as published by Sam Hocevar. See the LICENSE file for more details.
------------------------------------------------------------------------------
pragma License (Unrestricted);
------------------------------------------------------------------------------
--
-- SPARK Proof Analysis Tool
--
-- S.P.A.T. - Object representing a JSON "proof" object.
--
------------------------------------------------------------------------------
private with Ada.Tags;
with SPAT.Entity_Location;
with SPAT.Entity.Tree;
with SPAT.Field_Names;
with SPAT.Preconditions;
private with SPAT.Unique_Ids;
package SPAT.Proof_Item is
use all type GNATCOLL.JSON.JSON_Value_Type;
---------------------------------------------------------------------------
-- Has_Required_Fields
---------------------------------------------------------------------------
function Has_Required_Fields (Object : in JSON_Value;
Version : in File_Version) return Boolean is
(Entity_Location.Has_Required_Fields (Object => Object) and
Preconditions.Ensure_Rule_Severity (Object => Object) and
Preconditions.Ensure_Field (Object => Object,
Field => Field_Names.Check_Tree,
Kind => JSON_Array_Type,
Is_Optional =>
(case Version is
when GNAT_CE_2019 => False,
when GNAT_CE_2020 => True)));
type T is new Entity_Location.T with private;
---------------------------------------------------------------------------
-- Create
--
-- This is a dummy. The object returned by Create is empty. For the real
-- "creation" of a proper object, you need to call Add_To_Tree.
---------------------------------------------------------------------------
overriding
function Create (Object : in JSON_Value) return T with
Pre => Has_Required_Fields (Object => Object,
Version => GNAT_CE_2019);
---------------------------------------------------------------------------
-- "<"
--
-- Comparison operator for proof items.
---------------------------------------------------------------------------
overriding
function "<" (Left : in T;
Right : in T) return Boolean;
---------------------------------------------------------------------------
-- Add_To_Tree
---------------------------------------------------------------------------
procedure Add_To_Tree (Object : in JSON_Value;
Version : in File_Version;
Tree : in out Entity.Tree.T;
Parent : in Entity.Tree.Cursor) with
Pre => Has_Required_Fields (Object => Object,
Version => Version);
---------------------------------------------------------------------------
-- Has_Failed_Attempts
---------------------------------------------------------------------------
not overriding
function Has_Failed_Attempts (This : in T) return Boolean;
---------------------------------------------------------------------------
not overriding
function Has_Unproved_Attempts (This : in T) return Boolean;
---------------------------------------------------------------------------
-- Image
---------------------------------------------------------------------------
overriding
function Image (This : in T) return String;
---------------------------------------------------------------------------
-- Is_Unjustified
---------------------------------------------------------------------------
not overriding
function Is_Unjustified (This : in T) return Boolean;
---------------------------------------------------------------------------
-- Rule
---------------------------------------------------------------------------
not overriding
function Rule (This : in T) return Rule_Name;
---------------------------------------------------------------------------
-- Max_Success_Steps
---------------------------------------------------------------------------
not overriding
function Max_Success_Steps (This : in T) return Prover_Steps;
---------------------------------------------------------------------------
-- Max_Success_Time
---------------------------------------------------------------------------
not overriding
function Max_Success_Time (This : in T) return Duration;
---------------------------------------------------------------------------
-- Max_Steps
---------------------------------------------------------------------------
not overriding
function Max_Steps (This : in T) return Prover_Steps;
---------------------------------------------------------------------------
-- Max_Time
---------------------------------------------------------------------------
not overriding
function Max_Time (This : in T) return Duration;
---------------------------------------------------------------------------
-- Total_Time
---------------------------------------------------------------------------
not overriding
function Total_Time (This : in T) return Duration;
---------------------------------------------------------------------------
-- Suppressed
---------------------------------------------------------------------------
not overriding
function Suppressed (This : in T) return Justification;
---------------------------------------------------------------------------
-- Before
---------------------------------------------------------------------------
function Before (Left : in Entity.T'Class;
Right : in Entity.T'Class) return Boolean is
(Proof_Item.T (Left) < Proof_Item.T (Right));
package By_Duration is new Entity.Tree.Generic_Sorting (Before => Before);
---------------------------------------------------------------------------
-- Sort_By_Duration
---------------------------------------------------------------------------
procedure Sort_By_Duration (Tree : in out Entity.Tree.T;
Parent : in Entity.Tree.Cursor)
renames By_Duration.Sort;
type Checks_Sentinel is new Entity.T with private;
---------------------------------------------------------------------------
-- Has_Failed_Attempts
---------------------------------------------------------------------------
function Has_Failed_Attempts (This : in Checks_Sentinel) return Boolean;
---------------------------------------------------------------------------
-- Is_Unproved
---------------------------------------------------------------------------
function Is_Unproved (This : in Checks_Sentinel) return Boolean;
private
package Proof_Item_Ids is new Unique_Ids;
type Checks_Sentinel is new Entity.T with
record
Has_Failed_Attempts : Boolean;
Is_Unproved : Boolean;
end record;
---------------------------------------------------------------------------
-- Image
---------------------------------------------------------------------------
overriding
function Image (This : in Checks_Sentinel) return String is
(Ada.Tags.External_Tag (Checks_Sentinel'Class (This)'Tag) & ": " &
"(Has_Failed_Attempts => " & This.Has_Failed_Attempts'Image &
", Is_Unproved => " & This.Is_Unproved'Image & ")");
---------------------------------------------------------------------------
-- Has_Failed_Attempts
---------------------------------------------------------------------------
not overriding
function Has_Failed_Attempts (This : in Checks_Sentinel) return Boolean is
(This.Has_Failed_Attempts);
---------------------------------------------------------------------------
-- Is_Unproved
---------------------------------------------------------------------------
not overriding
function Is_Unproved (This : in Checks_Sentinel) return Boolean is
(This.Is_Unproved);
type Proof_Item_Sentinel is new Entity.T with null record;
---------------------------------------------------------------------------
-- Image
---------------------------------------------------------------------------
overriding
function Image (This : in Proof_Item_Sentinel) return String is
(Ada.Tags.External_Tag (Proof_Item_Sentinel'Class (This)'Tag) & ": ()");
type T is new Entity_Location.T with
record
Suppressed : Justification;
Rule : Rule_Name;
Severity : Severity_Name;
Max_Success : Time_And_Steps;
-- Longest time/steps for a successful proof.
Max_Proof : Time_And_Steps;
-- Longest time/steps spent in proof (successful or not).
Total_Time : Duration;
-- Accumulated proof time.
Id : Proof_Item_Ids.Id;
-- Id for stable sorting.
Has_Failed_Attempts : Boolean;
Has_Unproved_Attempts : Boolean;
Is_Unjustified : Boolean;
end record;
---------------------------------------------------------------------------
-- Has_Failed_Attempts
---------------------------------------------------------------------------
not overriding
function Has_Failed_Attempts (This : in T) return Boolean is
(This.Has_Failed_Attempts);
---------------------------------------------------------------------------
-- Image
---------------------------------------------------------------------------
overriding
function Image (This : in T) return String is
(To_String (This.Rule) & " " &
Entity_Location.T (This).Image & " => " &
(if This.Has_Unproved_Attempts
then "--"
else Image (Value => This.Max_Success_Time,
Steps => This.Max_Success_Steps)) & "/" &
Image (Value => This.Max_Time,
Steps => This.Max_Steps) & "/" &
Image (Value => This.Total_Time));
---------------------------------------------------------------------------
-- Is_Unjustified
---------------------------------------------------------------------------
not overriding
function Is_Unjustified (This : in T) return Boolean is
(This.Is_Unjustified);
---------------------------------------------------------------------------
-- Has_Unproved_Attempts
---------------------------------------------------------------------------
not overriding
function Has_Unproved_Attempts (This : in T) return Boolean is
(This.Has_Unproved_Attempts);
---------------------------------------------------------------------------
-- Max_Steps
---------------------------------------------------------------------------
not overriding
function Max_Steps (This : in T) return Prover_Steps is
(This.Max_Proof.Steps);
---------------------------------------------------------------------------
-- Max_Success_Steps
---------------------------------------------------------------------------
not overriding
function Max_Success_Steps (This : in T) return Prover_Steps is
(This.Max_Success.Steps);
---------------------------------------------------------------------------
-- Max_Success_Time
---------------------------------------------------------------------------
not overriding
function Max_Success_Time (This : in T) return Duration is
(This.Max_Success.Time);
---------------------------------------------------------------------------
-- Max_Time
---------------------------------------------------------------------------
not overriding
function Max_Time (This : in T) return Duration is
(This.Max_Proof.Time);
---------------------------------------------------------------------------
-- Rule
---------------------------------------------------------------------------
not overriding
function Rule (This : in T) return Rule_Name is
(This.Rule);
---------------------------------------------------------------------------
-- Suppressed
---------------------------------------------------------------------------
not overriding
function Suppressed (This : in T) return Justification is
(This.Suppressed);
---------------------------------------------------------------------------
-- Total_Time
---------------------------------------------------------------------------
not overriding
function Total_Time (This : in T) return Duration is
(This.Total_Time);
end SPAT.Proof_Item;
|