1 ## our_shell: ysh
2 ## oils_failures_allowed: 2
3
4 #### Local place
5
6 # Work around stdin buffering issue with read --line
7 #
8 # The framework test/sh_spec.py uses echo "$code_string" | $SH
9 #
10 # But then we have TWO different values of file descriptor 0 (stdin)
11 #
12 # - the pipe with the code
13 # - the pipe created in th shell for echo zzz | read --line
14 #
15 # Shells read one line at a time, but read --line explicitly avoids this.
16 #
17 # TODO: I wonder if we should consider outlawing read --line when stdin has code
18 # Only allow it for:
19 #
20 # $SH -c 'echo hi'
21 # $SH myscript.sh
22 #
23 # There could be a warning like read --line --no-fighting or something.
24
25 cat >tmp.sh <<'EOF'
26 func f(place) {
27 var x = 'f'
28 echo zzz | read --all (place)
29 echo "f x=$x"
30 }
31
32 func fillPlace(place) {
33 var x = 'fillPlace'
34 call f(place)
35 echo "fillPlace x=$x"
36 }
37
38 proc p {
39 var x = 'hi'
40 call fillPlace(&x)
41 echo "p x=$x"
42 }
43
44 x=global
45
46 p
47
48 echo "global x=$x"
49 EOF
50
51 $SH tmp.sh
52
53 ## STDOUT:
54 f x=f
55 fillPlace x=fillPlace
56 p x=zzz
57
58 global x=global
59 ## END
60
61 #### place->setValue()
62
63 func f(place) {
64 var x = 'f'
65 call place->setValue('zzz')
66 echo "f x=$x"
67 }
68
69 func fillPlace(place) {
70 var x = 'fillPlace'
71 call f(place)
72 echo "fillPlace x=$x"
73 }
74
75 proc p {
76 var x = 'hi'
77 call fillPlace(&x)
78 echo "p x=$x"
79 }
80
81 x=global
82
83 p
84 echo "global x=$x"
85
86 ## STDOUT:
87 f x=f
88 fillPlace x=fillPlace
89 p x=zzz
90 global x=global
91 ## END
92
93 #### [DISABLED] Places can't dangle; they should passed UP the stack only
94
95 func f() {
96 var f_local = null
97 return (&f_local)
98 }
99
100 func g() {
101 # This place is now INVALID!
102 var place = f()
103
104 # Should fail when we try to use the place
105 echo zzz | read --all (place)
106
107 # This should also fail
108 # call place->setValue('zzz')
109
110 }
111
112 call g()
113
114 echo done
115
116 ## status: 1
117 ## STDOUT:
118 ## END
119
120
121 #### Container Place (Dict)
122
123 var d = {key: 'hi'}
124
125 echo zzz | read --all (&d.key)
126
127 # I guess this works
128 echo newkey | read --all (&d.newkey)
129
130 echo key=$[d.key]
131 echo key=$[d.newkey]
132
133 ## STDOUT:
134 ## END
135
136