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
|
%%
%% %CopyrightBegin%
%%
%% Copyright Ericsson AB 2015-2016. All Rights Reserved.
%%
%% Licensed under the Apache License, Version 2.0 (the "License");
%% you may not use this file except in compliance with the License.
%% You may obtain a copy of the License at
%%
%% http://www.apache.org/licenses/LICENSE-2.0
%%
%% Unless required by applicable law or agreed to in writing, software
%% distributed under the License is distributed on an "AS IS" BASIS,
%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
%% See the License for the specific language governing permissions and
%% limitations under the License.
%%
%% %CopyrightEnd%
%%
-module(beam_bool_SUITE).
-export([all/0,suite/0,groups/0,init_per_suite/1,end_per_suite/1,
init_per_group/2,end_per_group/2,
before_and_inside_if/1,
scotland/1,y_registers/1,protected/1,
maps/1]).
suite() ->
[{ct_hooks,[ts_install_cth]}].
all() ->
test_lib:recompile(?MODULE),
[{group,p}].
groups() ->
[{p,[parallel],
[before_and_inside_if,
scotland,
y_registers,
protected,
maps
]}].
init_per_suite(Config) ->
Config.
end_per_suite(_Config) ->
ok.
init_per_group(_GroupName, Config) ->
Config.
end_per_group(_GroupName, Config) ->
Config.
before_and_inside_if(_Config) ->
no = before_and_inside_if([a], [b], delete),
no = before_and_inside_if([a], [b], x),
no = before_and_inside_if([a], [], delete),
no = before_and_inside_if([a], [], x),
no = before_and_inside_if([], [], delete),
yes = before_and_inside_if([], [], x),
yes = before_and_inside_if([], [b], delete),
yes = before_and_inside_if([], [b], x),
{ch1,ch2} = before_and_inside_if_2([a], [b], blah),
{ch1,ch2} = before_and_inside_if_2([a], [b], xx),
{ch1,ch2} = before_and_inside_if_2([a], [], blah),
{ch1,ch2} = before_and_inside_if_2([a], [], xx),
{no,no} = before_and_inside_if_2([], [b], blah),
{no,no} = before_and_inside_if_2([], [b], xx),
{ch1,no} = before_and_inside_if_2([], [], blah),
{no,ch2} = before_and_inside_if_2([], [], xx),
ok.
%% Thanks to Simon Cornish and Kostis Sagonas.
%% Used to crash beam_bool.
before_and_inside_if(XDo1, XDo2, Do3) ->
Do1 = (XDo1 =/= []),
Do2 = (XDo2 =/= []),
if
%% This expression occurs in a try/catch (protected)
%% block, which cannot refer to variables outside of
%% the block that are boolean expressions.
Do1 =:= true;
Do1 =:= false, Do2 =:= false, Do3 =:= delete ->
no;
true ->
yes
end.
%% Thanks to Simon Cornish.
%% Used to generate code that would not set {y,0} on
%% all paths before its use (and therefore fail
%% validation by the beam_validator).
before_and_inside_if_2(XDo1, XDo2, Do3) ->
Do1 = (XDo1 =/= []),
Do2 = (XDo2 =/= []),
CH1 = if Do1 == true;
Do1 == false,Do2==false,Do3 == blah ->
ch1;
true ->
no
end,
CH2 = if Do1 == true;
Do1 == false,Do2==false,Do3 == xx ->
ch2;
true ->
no
end,
{CH1,CH2}.
%% beam_bool would remove the initialization of {y,0}.
%% (Thanks to Thomas Arts and QuickCheck.)
scotland(_Config) ->
million = do_scotland(placed),
{'EXIT',{{badmatch,placed},_}} = (catch do_scotland(false)),
{'EXIT',{{badmatch,placed},_}} = (catch do_scotland(true)),
{'EXIT',{{badmatch,placed},_}} = (catch do_scotland(echo)),
ok.
do_scotland(Echo) ->
found(case Echo of
Echo when true; Echo, Echo, Echo ->
Echo;
echo ->
[]
end,
Echo = placed).
found(_, _) -> million.
%% ERL-143: beam_bool could not handle Y registers as a destination.
y_registers(_Config) ->
{'EXIT',{badarith,[_|_]}} = (catch baker(valentine)),
{'EXIT',{badarith,[_|_]}} = (catch baker(clementine)),
{not_ok,true} = potter([]),
{ok,false} = potter([{encoding,any}]),
ok.
%% Thanks to Quickcheck.
baker(Baker) ->
(valentine == Baker) +
case Baker of
Baker when Baker; Baker ->
Baker;
Baker ->
[]
end.
%% Thanks to Jose Valim.
potter(Modes) ->
Raw = lists:keyfind(encoding, 1, Modes) == false,
Final = case Raw of
X when X == false; X == nil -> ok;
_ -> not_ok
end,
{Final,Raw}.
protected(_Config) ->
{'EXIT',{if_clause,_}} = (catch photographs({1, surprise, true}, opinions)),
{{true}} = welcome({perfect, true}),
{'EXIT',{if_clause,_}} = (catch welcome({perfect, false})),
ok.
photographs({_Violation, surprise, Deep}, opinions) ->
{if
0; "here", Deep ->
Deep = Deep
end}.
welcome({perfect, Profit}) ->
if
Profit, Profit, Profit; 0 ->
{id({Profit})}
end.
maps(_Config) ->
ok = evidence(#{0 => 42}).
%% Cover handling of put_map in in split_block_label_used/2.
evidence(#{0 := Charge}) when 0; #{[] => Charge} == #{[] => 42} ->
ok.
%%%
%%% Common utilities.
%%%
id(I) ->
I.
|
